Aluminum Sheet cyanide copper plating solution , characterized by comprising 180 ~ 220g / L of copper sulfate , 30 ~ 80mL / L sulfuric acid , 80 ~ 160ppm chloride , 5.0 ~ 10.0mL / L open cylinder agent UM, 0.4 ~ 0.6mL / L filling agent UA, 0.4 ~ 0.6mL / L brightener UB and water .
Plating method comprising immersing the workpiece first aluminum wire sink zinc cyanide displacement reaction occurs in solution in the aluminum wheel surface zinc layer of the workpiece ; plug it into the cathode copper cyanide plating solution, with phosphor as an anode , in aluminum wheels copper surface of the workpiece . The present invention deposition speed, high filling plating , coating easy to produce pinholes, low internal stress , rich extensibility and will not pollute the environment.
2013年9月29日星期日
Comprehensive knowledge of aluminum profiles
Is aluminum rod by hot melt extrusion , to obtain different cross-sectional shapes of an aluminum material . Aluminum production processes including casting, extrusion and color ( color include: oxidation, electrophoresis coating, fluorine carbon spraying, powder coating , etc. ) 3 process .
Aluminum use is divided into :
An industrial aluminum profile : mainly used in aircraft, trains, industrial radiators , automotive, electrical and so on.
2 Aluminum Profiles : mainly used in construction windows and doors , curtain wall , interior decoration and building structure with aluminum .
Divided by aluminum surface treatment :
1 anodized aluminum : anodized surface profile , electrolytic coloring or organic coloring.
2 . Electrophoretic coating Aluminum Plates: anodized surface profile and electrophoretic coating composite processing .
3 powder coating aluminum: the surface profile thermosetting organic polymer powder coatings do .
4 PVDF coating aluminum: the surface profile to polyvinylidene fluoride varnish for coating. Currently, the widespread use of thermal profiles , is to take the wear strip or mastic compound of an aluminum alloy profiles.
Key indicators :
1 appearance: anodized surface profile does not allow electric burns, shedding affect the use of oxide film defects ; electrophoresis, powder paint after painting fluorocarbon profiles should be uniform , clean , smooth, not allowed to have wrinkles , cracks , bubbles, flow marks , inclusions and paint loss and other defects affect the use , but in the end 80mm profiles within the permitted without local film . Aluminum Profiles appearance quality affect construction decorative effect , so the factory must have a profile surface coating , to avoid transportation , stacking process surface scratches, bumps and corrosion. Some of aluminum profiles on the market there is a similar waterlines shaped cavity , moldy spots phenomenon , reflecting the production process defects.
(2) Thickness: the thickness profiles are the main factors affecting strength of machined parts , one of the main profile is the force in the project area . For example, the main profile outside the window specified minimum nominal wall thickness of not less than 1.4mm.
3 Thickness : Extruded good aluminum alloy, its surface is not strong corrosion resistance is required in order to increase the surface treatment of aluminum corrosion resistance , abrasion resistance and exterior aesthetics . Anodized aluminum thickness level is divided into AA10, AA15, AA20, AA25, electrophoretic coating aluminum thickness level is divided into A. B. S, powder-coated aluminum decorative surface coating minimum local thickness ≥ 40um, PVDF coating aluminum decorative surface paint coating thickness due to the different types , with different requirements , two Tu average thickness ≥ 30um, three Tu average thickness ≥ 40um, four Tu average thickness ≥ 65um.
4 . Chemical composition, mechanical properties: different grades of aluminum profiles , delivery status and its chemical composition, mechanical properties of technical parameters are different , the customer should control standards ( contract ) one by one check .
5 colors and color : different grades, there is a supply state of the alloy color and color difference. Suggested the use of alloy grades and supply state, fully consider the color and color inconsistencies on the building structure.
6 Resistance to salt spray corrosion , wear resistance, weatherability , mortar , etc. : This is an important technical parameters of aluminum profiles , aluminum profiles reflect performance , affect use.
Aluminum use is divided into :
An industrial aluminum profile : mainly used in aircraft, trains, industrial radiators , automotive, electrical and so on.
2 Aluminum Profiles : mainly used in construction windows and doors , curtain wall , interior decoration and building structure with aluminum .
Divided by aluminum surface treatment :
1 anodized aluminum : anodized surface profile , electrolytic coloring or organic coloring.
2 . Electrophoretic coating Aluminum Plates: anodized surface profile and electrophoretic coating composite processing .
3 powder coating aluminum: the surface profile thermosetting organic polymer powder coatings do .
4 PVDF coating aluminum: the surface profile to polyvinylidene fluoride varnish for coating. Currently, the widespread use of thermal profiles , is to take the wear strip or mastic compound of an aluminum alloy profiles.
Key indicators :
1 appearance: anodized surface profile does not allow electric burns, shedding affect the use of oxide film defects ; electrophoresis, powder paint after painting fluorocarbon profiles should be uniform , clean , smooth, not allowed to have wrinkles , cracks , bubbles, flow marks , inclusions and paint loss and other defects affect the use , but in the end 80mm profiles within the permitted without local film . Aluminum Profiles appearance quality affect construction decorative effect , so the factory must have a profile surface coating , to avoid transportation , stacking process surface scratches, bumps and corrosion. Some of aluminum profiles on the market there is a similar waterlines shaped cavity , moldy spots phenomenon , reflecting the production process defects.
(2) Thickness: the thickness profiles are the main factors affecting strength of machined parts , one of the main profile is the force in the project area . For example, the main profile outside the window specified minimum nominal wall thickness of not less than 1.4mm.
3 Thickness : Extruded good aluminum alloy, its surface is not strong corrosion resistance is required in order to increase the surface treatment of aluminum corrosion resistance , abrasion resistance and exterior aesthetics . Anodized aluminum thickness level is divided into AA10, AA15, AA20, AA25, electrophoretic coating aluminum thickness level is divided into A. B. S, powder-coated aluminum decorative surface coating minimum local thickness ≥ 40um, PVDF coating aluminum decorative surface paint coating thickness due to the different types , with different requirements , two Tu average thickness ≥ 30um, three Tu average thickness ≥ 40um, four Tu average thickness ≥ 65um.
4 . Chemical composition, mechanical properties: different grades of aluminum profiles , delivery status and its chemical composition, mechanical properties of technical parameters are different , the customer should control standards ( contract ) one by one check .
5 colors and color : different grades, there is a supply state of the alloy color and color difference. Suggested the use of alloy grades and supply state, fully consider the color and color inconsistencies on the building structure.
6 Resistance to salt spray corrosion , wear resistance, weatherability , mortar , etc. : This is an important technical parameters of aluminum profiles , aluminum profiles reflect performance , affect use.
2013年9月18日星期三
Precautions foil rolling operations
Note the following:
( 1 ) Aluminum rolling pass reduction rate is generally about 50%, the thickness of the finished box timber 0.03mm and below , finished rolling passes generally use doublet rolling . Finished thickness of 0.01mm and below the doublet pass before rolling and trimming ; greater than 0.01mm. Less than 0.03 mm in the last one secondary trimming ; greater than 0.03mm is not cutting, trimming per edge trimming of not more than 15mm.
( 2 ) the production of wide width should follow the first roll , the latter principle of rolling narrow , edge or surface gloss aluminum inconsistent.
( 3 ) each rolling pass on the roll surface have different requirements . Incoming thick rough rolling , to a large reduction , rolling oil with some people want to be more . Oil temperature should be lower, you can take a lot of heat emitted during rolling . In order to bring more people rolling oil , roll some of the rough surface will worn ; when the roll roll roll slightly smaller than crude ; finishing some finer roller surface to get a better surface finished Al Foil.
( 4 ) a thin film finishing rolling . In order to obtain a thin film , mainly to improve the rolling oil . General roughing oil temperature 20-40 ℃, finishing oil ju 40-60 ℃. Improved oil , can film thinning , can improve the surface quality of aluminum foil .
( 1 ) Aluminum rolling pass reduction rate is generally about 50%, the thickness of the finished box timber 0.03mm and below , finished rolling passes generally use doublet rolling . Finished thickness of 0.01mm and below the doublet pass before rolling and trimming ; greater than 0.01mm. Less than 0.03 mm in the last one secondary trimming ; greater than 0.03mm is not cutting, trimming per edge trimming of not more than 15mm.
( 2 ) the production of wide width should follow the first roll , the latter principle of rolling narrow , edge or surface gloss aluminum inconsistent.
( 3 ) each rolling pass on the roll surface have different requirements . Incoming thick rough rolling , to a large reduction , rolling oil with some people want to be more . Oil temperature should be lower, you can take a lot of heat emitted during rolling . In order to bring more people rolling oil , roll some of the rough surface will worn ; when the roll roll roll slightly smaller than crude ; finishing some finer roller surface to get a better surface finished Al Foil.
( 4 ) a thin film finishing rolling . In order to obtain a thin film , mainly to improve the rolling oil . General roughing oil temperature 20-40 ℃, finishing oil ju 40-60 ℃. Improved oil , can film thinning , can improve the surface quality of aluminum foil .
2013年9月17日星期二
What effect anodized disposal
Aluminum and alloys after anodizing equipment disposal , you can make a layer made of aluminum and its alloys look much more than the natural oxide film thickness fine film . This layer of oxide film and then the whole story off manually dispose of non- crystalline oxide film into a crystalline oxide film , the pore is also closed , thus making the same metallic gloss appearance can be durable , corrosion function, the mechanical strength has increased , embellishment can be achieved by staining appearance . Because aluminum and its alloy products after anodizing the whole story has many features, so the Anodized Aluminum process in aluminum look wider use of disposal . Use in industry can be broadly divided into the following categories:
( 1) to avoid corrosion products : Because the anodized film obtained by the closure of the appropriate disposal of the whole story in the atmosphere has good stability . Whether from the sulfuric acid solution , oxalic acid or chromic acid solution obtained in the normal process of the oxide film , the corrosion is a very good function , such as household aluminum pan , pot, washing interior and so on. Chromic acid oxidation method for aluminum welding parts together and riveting pieces .
( 2 ) protection - embellishment : high transparency in the obtained oxide film , the oxide film can be adsorbed with a variety of organic dyes or inorganic pigments characteristics , the oxide film can be obtained in a variety of light colors and pictures handsome , and in recent years not the presentation of new technology , such as less oxidized repeated once colored fireworks picture , wood picture , oxidative handling offset printing , ceramic oxide , so that even more handsome aluminum pleasing appearance , this layer of film is both colorful decorative layer , but also resists , such as lighters , fountain pens and crafts.
( 1) to avoid corrosion products : Because the anodized film obtained by the closure of the appropriate disposal of the whole story in the atmosphere has good stability . Whether from the sulfuric acid solution , oxalic acid or chromic acid solution obtained in the normal process of the oxide film , the corrosion is a very good function , such as household aluminum pan , pot, washing interior and so on. Chromic acid oxidation method for aluminum welding parts together and riveting pieces .
( 2 ) protection - embellishment : high transparency in the obtained oxide film , the oxide film can be adsorbed with a variety of organic dyes or inorganic pigments characteristics , the oxide film can be obtained in a variety of light colors and pictures handsome , and in recent years not the presentation of new technology , such as less oxidized repeated once colored fireworks picture , wood picture , oxidative handling offset printing , ceramic oxide , so that even more handsome aluminum pleasing appearance , this layer of film is both colorful decorative layer , but also resists , such as lighters , fountain pens and crafts.
Brief special sublimation powder coating aluminum
Powder coatings, often referred to as dry paint is an environmentally friendly product that can offer more variety and more colors . We see more and more industries , more and more areas of application of powder coatings. With the rapid development of aluminum industry , used in powder coatings on aluminum has become a specialized branch , and gradually replace the electrophoretic paint and fluorocarbon . With the transfer of technology, but also to make special aluminum powder coating more colorful.
Requires a high strength Aluminum Alloys weatherability and decorative, therefore , must be performed on the aluminum surface treatment, surface treatment of aluminum are mainly organic coating, comprising powder coating , fluorocarbon coating and wood processing , the wood processing is also performed on the powder coating of the . Wood processing technology is divided into two kinds of water transfer and heat transfer , the technology into China since the late 1990s , with the rapid development in recent years . Its main characteristic is transferred image colorful, rich layers, its effect can be comparable with the printing and thermal transfer printing difference is that at high temperatures by sublimation thermal transfer ink , to multicolor patterns once into a graph, without trapping , condensate formed after the pattern of bright colors , and can penetrate into the powder paint coating inside 40 to 60 microns. Therefore, durable heat transfer products , patterns will not fall off , cracking and fading. Heat transfer products will not change the original gloss, abrasion resistance , weather resistance, acid and alkali resistance and other characteristics , heat transfer surface only play decorative effect. Entire heat transfer industry , has developed into a now largely complete supporting systems, including powder coating, spraying , heat transfer machine , transfer paper and transfer film manufacturing .
Thermal transfer technology but also to the emergence of powder coatings and presents new challenges that require the use of powder coatings, must be connected with thermal transfer paper, film matches , to get good transfer effect . Therefore, to explore the powder coating film sublimation thermal transfer technology and research powder coating formulation is necessary .
Thermal transfer technology in the aluminum on the application, no doubt to the special aluminum powder coating has brought boundless vitality, but also enriched the colorful nature of powder coatings . Many powder coating production plants are set up a special research and test team and specialized production workshop , there have been many professional production plant. These thermal transfer technology for developing special aluminum powder coating to promote the development has played a positive role. However , we also see the tear issues are also plagued some manufacturers . I have been to some of the aluminum powder coating plant, aluminum stickers and evacuation process is very smooth, but the tearing process becomes jammed and most of them were gathered in the tear-off and the final surface cleaning processes. How to make up tearing process is simple and smooth , powder coating formulations designed to explore aspects of the powder coating process to study coating , wood grain pattern ink on paper quality is also worthy of attention.
Requires a high strength Aluminum Alloys weatherability and decorative, therefore , must be performed on the aluminum surface treatment, surface treatment of aluminum are mainly organic coating, comprising powder coating , fluorocarbon coating and wood processing , the wood processing is also performed on the powder coating of the . Wood processing technology is divided into two kinds of water transfer and heat transfer , the technology into China since the late 1990s , with the rapid development in recent years . Its main characteristic is transferred image colorful, rich layers, its effect can be comparable with the printing and thermal transfer printing difference is that at high temperatures by sublimation thermal transfer ink , to multicolor patterns once into a graph, without trapping , condensate formed after the pattern of bright colors , and can penetrate into the powder paint coating inside 40 to 60 microns. Therefore, durable heat transfer products , patterns will not fall off , cracking and fading. Heat transfer products will not change the original gloss, abrasion resistance , weather resistance, acid and alkali resistance and other characteristics , heat transfer surface only play decorative effect. Entire heat transfer industry , has developed into a now largely complete supporting systems, including powder coating, spraying , heat transfer machine , transfer paper and transfer film manufacturing .
Thermal transfer technology but also to the emergence of powder coatings and presents new challenges that require the use of powder coatings, must be connected with thermal transfer paper, film matches , to get good transfer effect . Therefore, to explore the powder coating film sublimation thermal transfer technology and research powder coating formulation is necessary .
Thermal transfer technology in the aluminum on the application, no doubt to the special aluminum powder coating has brought boundless vitality, but also enriched the colorful nature of powder coatings . Many powder coating production plants are set up a special research and test team and specialized production workshop , there have been many professional production plant. These thermal transfer technology for developing special aluminum powder coating to promote the development has played a positive role. However , we also see the tear issues are also plagued some manufacturers . I have been to some of the aluminum powder coating plant, aluminum stickers and evacuation process is very smooth, but the tearing process becomes jammed and most of them were gathered in the tear-off and the final surface cleaning processes. How to make up tearing process is simple and smooth , powder coating formulations designed to explore aspects of the powder coating process to study coating , wood grain pattern ink on paper quality is also worthy of attention.
2013年9月13日星期五
Aluminum sliding doors exactly how to choose
Modern home concept , more inclined to save space, can be customized as well as environmentally friendly and practical aspects , including sliding doors in addition to the living room , kitchen, balcony , etc. play a spatial separation and increasing the role of privacy , but also can effectively reduce the noise , sound insulation , heat insulation performance is also very advantageous. However, many types of sliding doors , the price difference is big , how to choose what ?
Key 1: see profile section
Sliding doors on the market profiles of 6063 GB Aluminum Alloys and recycled aluminum two kinds . High quality sliding door profiles using GB 6063-T5 ( aluminum, silicon, strontium, copper, magnesium , manganese alloy ) , tough degree have a great advantage , but the thickness can reach 1.4mm or more, while quality than low profiles for the recycled aluminum , toughness and life is reduced. 6063-T5 profiles mostly use high-end imported wood handle , decorative performance is very good, and some businesses in order shoddy, often using recycled aluminum surface painted the way , consumers in the purchase, should allow business products section of the profile in order to understand the real material .
Key 2 : Listen pulley vibration
Sliding doors were upper and lower two pulleys . Slide from the guide , because mounted on the upper orbit , consumers often do not pay attention when purchasing . Good slide structure is relatively complex , not only compact, but also anti- strike rubber block doors to slide smoothly directed , effectively prevent strike action when the sliding door , and there is a strong wind pressure capacity , almost no noise. Consumers Do not be mistaken in the selection of sliding doors sliding slipping in the lighter the better , in fact, high-quality sliding doors slide should be in with a certain dignity, smooth and without vibration.
Key 3 : pick orbital altitude
To track the rational design directly affects the comfort and use of the product life , consumers should choose the optional foot feeling good , and help clean style, while , in order to house the elderly and children safe , to track height of not more than 5mm as well, which in the time of installation to be done effectively combined with ground handling .
Key 4 : Elect safety glass
In addition to not use transparent glass bathroom door , the other to occupy most of the glass sliding doors , glass doors directly determines the price level . Best selection of standard 5 +9 A +5 hollow glass , broken not hurt , high safety factor . And have excellent sound and heat insulation properties.
Key 5: pick Edge fastness
Popular on the market strips are PVC, EPDM and silicone , EPDM silicone better, not aging and corrosion profiles, glass . Also PVC shedding deformation, and prolonged use of oxidation occurs ( with a layer of oily , sticky hands , sticky dust ) .
Key 1: see profile section
Sliding doors on the market profiles of 6063 GB Aluminum Alloys and recycled aluminum two kinds . High quality sliding door profiles using GB 6063-T5 ( aluminum, silicon, strontium, copper, magnesium , manganese alloy ) , tough degree have a great advantage , but the thickness can reach 1.4mm or more, while quality than low profiles for the recycled aluminum , toughness and life is reduced. 6063-T5 profiles mostly use high-end imported wood handle , decorative performance is very good, and some businesses in order shoddy, often using recycled aluminum surface painted the way , consumers in the purchase, should allow business products section of the profile in order to understand the real material .
Key 2 : Listen pulley vibration
Sliding doors were upper and lower two pulleys . Slide from the guide , because mounted on the upper orbit , consumers often do not pay attention when purchasing . Good slide structure is relatively complex , not only compact, but also anti- strike rubber block doors to slide smoothly directed , effectively prevent strike action when the sliding door , and there is a strong wind pressure capacity , almost no noise. Consumers Do not be mistaken in the selection of sliding doors sliding slipping in the lighter the better , in fact, high-quality sliding doors slide should be in with a certain dignity, smooth and without vibration.
Key 3 : pick orbital altitude
To track the rational design directly affects the comfort and use of the product life , consumers should choose the optional foot feeling good , and help clean style, while , in order to house the elderly and children safe , to track height of not more than 5mm as well, which in the time of installation to be done effectively combined with ground handling .
Key 4 : Elect safety glass
In addition to not use transparent glass bathroom door , the other to occupy most of the glass sliding doors , glass doors directly determines the price level . Best selection of standard 5 +9 A +5 hollow glass , broken not hurt , high safety factor . And have excellent sound and heat insulation properties.
Key 5: pick Edge fastness
Popular on the market strips are PVC, EPDM and silicone , EPDM silicone better, not aging and corrosion profiles, glass . Also PVC shedding deformation, and prolonged use of oxidation occurs ( with a layer of oily , sticky hands , sticky dust ) .
Aluminum windows and doors cause water seepage and water ways
Construction of leakages in aluminum doors and windows during use is the most common , but also more difficult to cure , and over the years has become the most common aluminum alloy doors and one of the maladies . With China's large-scale residential development , doors and windows of the monomer increasingly large area and wall , resulting in more and more obvious its water leakage problem , which is a great influence on the quality of construction , economic loss caused by can not be estimated . Which reminds us to strengthen research waterproof aluminum windows and doors , to form an effective waterproof measures to effectively improve product quality. The following analysis of several common reasons and aluminum doors and windows leaking solution .
One , mainly due to water seepage analysis of Aluminum Alloys windows and doors
1 , aluminum windows and doors in the design process itself causes structural defects . Windows main structural strength and rigidity press failed to meet local wind energy target, such as the cross-section of small , thin wall thickness , resulting in aluminum windows and doors of the force rod parts, hardware fittings , seals and adhesive material under normal wind loads under the effect of severe plastic deformation , crack or damaged , resulting in failure to produce doors and windows sealed body water leakage . The reason is the product fails to accurately regulate the strength calculation and design, and is not passed before the factory-installed wind pressure caused by the physical performance test windows leak water .
2 , aluminum doors waterproof structure design is unreasonable, waterproof seal profile section level is not enough , there is no more drainage channels. When the rain in indoor and outdoor air pressure under the action easily into the cavity and into the interior aluminum doors and windows , aluminum doors and windows and into the cavity of the rain , but not through the drainage system of aluminum windows and doors smoothly discharged outdoors and stay inside with doors and windows resulting in stagnant water and produce leakage.
3 , processing and installation process can not reach the quality requirements cause . Aluminum windows and doors installed in the field , the assembly size control is not good , so that the position of each lap seal have misplaced or overlap each other undersize ; box fan fight angle seam not sealed, not glue ; or because of the pressure foot and there is a gap , door frames for fixing the fastening screws no glue closure , sealed with a sealant when sealing parts of uncleaned surfaces .
4 , materials and accessories for material differences caused . Aluminum windows and doors with sealant strips and hardware accessories such as auxiliary of inferior quality. If sealant use outdated or counterfeit fake plastic, anti- displacement capability, easy to crack ; strips excellent anti-aging time is short, easy to pull off contraction ; hardware accessories poor quality , can not afford to break or repeatedly turned deformation caused by closed lax , resulting in leakages.
5 , aluminum window frames and exterior doors connecting areas filling the hole wall sealing properly, the gap between the wall and the hole too large or too small , causing doors and windows difficult to fix and easy to produce inaccurate filling cracks , which are often caused by the construction unit . Is also one of the causes of water seepage .
Second, for the above reasons waterproof approach taken
1, the design and preparation phase . First, according to the standard should be based on the engineering characteristics of rigorous calculation and design , aluminum wall thickness, cross-section , etc. to meet the local building wind load size and use requirements. Window frames on the wall in front of the door , select the most unfavorable wind pressure or volume in the overall detection window for three , truly physical performance test to determine whether the doors meet the design requirements and performance indicators .
2 , doors and windows structural waterproofing design .
( 1 ) Aluminum alloy doors and windows when the active use of structural design isobaric principle is to improve the performance of windows and doors sealing the most effective way .
( 2 ) Events Fan amount of overlap with the sash can not be too small. Activities fan and sash casement amount of overlap should not be less than 6mm.
( 3 ) high-rise buildings , cold regions and areas with high energy requirements , maximize the use of casement windows and doors structure, with little or no sliding doors and windows structure. Because sliding windows and doors with top and bottom rails activities fan there is a big gap between and adjacent to two sashes not in the same plane, two sash seal between the clamping force is not there , relying solely on lap tops for overlap , while the gap between the tops , sealing effect is very weak , so the sliding doors and sealing performance is poor. The sash casement windows and doors and window frames have between two to three sealing rubber strip seal , after the sash closed and locked tight pressure seal strip , but it is easy to form the intermediate cavity pressure chamber , etc. , so you can design and excellent sealing performance windows and doors .
( 4 ) Install glass doors aluminum and glass design in the interior pressure line should be the direction , to avoid glass pressure line and the slight gap between sash seepage .
( 5 ) types of windows and doors sliding down to design the interior side of the flap is high enough , or when there is a certain pressure outdoor rainwater , rainwater will flow over the flap interior .
( 6 ) should be set to the upper fan doors activities Phi water board , the lower displacement provide sufficient drainage holes , so that the water can enter the doors smoothly discharged outdoors.
( 7 ) Combination doors to minimize the exposed seams , cracks can not be used because of subtle sealant arising from leakage. Exposure can not be avoided due to structural reasons patchwork , then seams profiles two contact surfaces forming 90 °, easy to inject sealant .
3 , windows and doors cutting, assembly areas to improve the production of fine level to ensure proper amount of overlap , the need to pay special attention to fans and fan inlay glass and fan with the surrounding frame lap seal case .
4 , materials and accessories for the selection of materials . Excellent choice of weathering silicone sealant, glue and frame wall fan fight angle seam sealant ; choose the regular manufacturers of hardware accessories.
5 , aluminum doors four weeks with the hole wall joints to ensure the gap size to meet the requirements , enabling between sealed and filled with waterproof material packing seal.
Conclusion
In summary , aluminum doors seepage problem may be related to the design, installation , processing, and construction units, and so on , as long as we strengthen the study of water seepage problem , summarize, take effective measures, and to strengthen the monitoring of quality of water seepage , it must able to build high-quality , seepage little aluminum doors and windows products.
One , mainly due to water seepage analysis of Aluminum Alloys windows and doors
1 , aluminum windows and doors in the design process itself causes structural defects . Windows main structural strength and rigidity press failed to meet local wind energy target, such as the cross-section of small , thin wall thickness , resulting in aluminum windows and doors of the force rod parts, hardware fittings , seals and adhesive material under normal wind loads under the effect of severe plastic deformation , crack or damaged , resulting in failure to produce doors and windows sealed body water leakage . The reason is the product fails to accurately regulate the strength calculation and design, and is not passed before the factory-installed wind pressure caused by the physical performance test windows leak water .
2 , aluminum doors waterproof structure design is unreasonable, waterproof seal profile section level is not enough , there is no more drainage channels. When the rain in indoor and outdoor air pressure under the action easily into the cavity and into the interior aluminum doors and windows , aluminum doors and windows and into the cavity of the rain , but not through the drainage system of aluminum windows and doors smoothly discharged outdoors and stay inside with doors and windows resulting in stagnant water and produce leakage.
3 , processing and installation process can not reach the quality requirements cause . Aluminum windows and doors installed in the field , the assembly size control is not good , so that the position of each lap seal have misplaced or overlap each other undersize ; box fan fight angle seam not sealed, not glue ; or because of the pressure foot and there is a gap , door frames for fixing the fastening screws no glue closure , sealed with a sealant when sealing parts of uncleaned surfaces .
4 , materials and accessories for material differences caused . Aluminum windows and doors with sealant strips and hardware accessories such as auxiliary of inferior quality. If sealant use outdated or counterfeit fake plastic, anti- displacement capability, easy to crack ; strips excellent anti-aging time is short, easy to pull off contraction ; hardware accessories poor quality , can not afford to break or repeatedly turned deformation caused by closed lax , resulting in leakages.
5 , aluminum window frames and exterior doors connecting areas filling the hole wall sealing properly, the gap between the wall and the hole too large or too small , causing doors and windows difficult to fix and easy to produce inaccurate filling cracks , which are often caused by the construction unit . Is also one of the causes of water seepage .
Second, for the above reasons waterproof approach taken
1, the design and preparation phase . First, according to the standard should be based on the engineering characteristics of rigorous calculation and design , aluminum wall thickness, cross-section , etc. to meet the local building wind load size and use requirements. Window frames on the wall in front of the door , select the most unfavorable wind pressure or volume in the overall detection window for three , truly physical performance test to determine whether the doors meet the design requirements and performance indicators .
2 , doors and windows structural waterproofing design .
( 1 ) Aluminum alloy doors and windows when the active use of structural design isobaric principle is to improve the performance of windows and doors sealing the most effective way .
( 2 ) Events Fan amount of overlap with the sash can not be too small. Activities fan and sash casement amount of overlap should not be less than 6mm.
( 3 ) high-rise buildings , cold regions and areas with high energy requirements , maximize the use of casement windows and doors structure, with little or no sliding doors and windows structure. Because sliding windows and doors with top and bottom rails activities fan there is a big gap between and adjacent to two sashes not in the same plane, two sash seal between the clamping force is not there , relying solely on lap tops for overlap , while the gap between the tops , sealing effect is very weak , so the sliding doors and sealing performance is poor. The sash casement windows and doors and window frames have between two to three sealing rubber strip seal , after the sash closed and locked tight pressure seal strip , but it is easy to form the intermediate cavity pressure chamber , etc. , so you can design and excellent sealing performance windows and doors .
( 4 ) Install glass doors aluminum and glass design in the interior pressure line should be the direction , to avoid glass pressure line and the slight gap between sash seepage .
( 5 ) types of windows and doors sliding down to design the interior side of the flap is high enough , or when there is a certain pressure outdoor rainwater , rainwater will flow over the flap interior .
( 6 ) should be set to the upper fan doors activities Phi water board , the lower displacement provide sufficient drainage holes , so that the water can enter the doors smoothly discharged outdoors.
( 7 ) Combination doors to minimize the exposed seams , cracks can not be used because of subtle sealant arising from leakage. Exposure can not be avoided due to structural reasons patchwork , then seams profiles two contact surfaces forming 90 °, easy to inject sealant .
3 , windows and doors cutting, assembly areas to improve the production of fine level to ensure proper amount of overlap , the need to pay special attention to fans and fan inlay glass and fan with the surrounding frame lap seal case .
4 , materials and accessories for the selection of materials . Excellent choice of weathering silicone sealant, glue and frame wall fan fight angle seam sealant ; choose the regular manufacturers of hardware accessories.
5 , aluminum doors four weeks with the hole wall joints to ensure the gap size to meet the requirements , enabling between sealed and filled with waterproof material packing seal.
Conclusion
In summary , aluminum doors seepage problem may be related to the design, installation , processing, and construction units, and so on , as long as we strengthen the study of water seepage problem , summarize, take effective measures, and to strengthen the monitoring of quality of water seepage , it must able to build high-quality , seepage little aluminum doors and windows products.
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