How to straighten aluminum alloy when it is bent? Aluminum alloy is a very common material in our life, which is basically available in many families, but there are many factors that cause aluminum alloy deformation for various reasons, so how to straighten aluminum alloy when it is bent?
How to straighten aluminum alloy when it is bent 1 1? The inner cavity should be filled, and then the bent aluminum square tube should be shaped to protect it while returning to the positive side. The wrinkles on the outer surface can be welded and polished, and if sprayed, it needs dust scraping pretreatment.
2. If the bend is serious, you can try cutting from the bend, filling the port with plastic, and finally welding, but these will undoubtedly consume more energy and the success rate is not high, and the strength will be discounted. Customers need to consult in advance whether they agree or not.
Six skills of straightening aluminum profile after extrusion
1. The aluminum profiles on the cooling bed shall not rub, pull, overlap, crowd or entangle with each other in the process of taking, moving and straightening, and a certain interval shall be left between them. Profiles that are easy to bend and have a long discharging length should be handled in time and protected if necessary.
2. The straightening of aluminum profile must be cooled to below 50 degrees (not hot) before it can be moved to the straightening frame for straightening. If the temperature is too high, it will burn people and tops. What's more, because the internal stress of profiles can't be completely eliminated, there will be scrapped products such as bending, twisting and poor performance before and after aging.
3. Because the top has the function of resisting heat dissipation, the profile with high requirements for decorative surface must be turned up and down, back and forth, so as to facilitate uniform heat dissipation and reduce the transverse bright spot defects caused by uneven heat dissipation and different crystallinity, especially for aluminum profiles with large width and wall thickness.
4. Special-shaped aluminum profiles, such as feet, fine teeth, long legs, arc surfaces, inclined surfaces, openings, corners and other places with long vertical walls, large radians, different wall thicknesses in various parts and strange shapes, should focus on preventing local or point-like size deformation, distortion, spiral and other defects.
5. When straightening, the stretching amount is generally controlled at about 65438 0%. For example, for a 25M profile, the stretching amount after straightening should be about 25CM, but it must not exceed 2%. In production, it should be adjusted according to the actual situation of profile discharging and various specific requirements of customers (opening size, surface quality, external size, internal diameter size, wall thickness size, elongation, etc.). ), and the stretching amount that can meet these requirements at the same time can be found in many technical requirements. Excessive stretching will lead to head and tail size deviation, water-like distortion (fish scale) marks on the surface, low elongation, high hardness and high brittleness (low plasticity). Too low straightening will make the compressive strength and hardness of the profile low, even aging (quenching) can not improve the hardness, and the profile is easy to bend into an arc (commonly known as broadsword bending).
6. In order to control the straightening deformation and better control the dimensional change of the whole profile, appropriate special fixtures and appropriate methods should be adopted. Especially for opening material, arc materials, cantilever materials and curved profiles, more attention should be paid to the rational and effective use of straightening fixtures. When necessary, someone should hold the centralizer or plug pad in the middle of the straightening profile to ensure that the tensile size between the head, middle and tail sections meets the profile requirements.
How to straighten aluminum alloy when it is bent? How to correct the deformation of aluminum alloy door?
If the deformation is not serious, but only slight, directly hit the deformed part with a hammer and correct it bit by bit. But if the deformation is serious, it is basically irreparable. It is recommended to buy a new aluminum alloy door to replace it, so that it is safe to use.
Matters needing attention in purchasing aluminum alloy doors
1, and the thickness 1 mm or more is appropriate.
When buying aluminum alloy doors, the first thing to pay attention to is the thickness. This material has very high strength, strong corrosion resistance and is not easy to deform during use. But if its thickness is too thin, it is likely to be deformed after a period of use. Therefore, it is best to choose aluminum alloy doors with a thickness of 1.0 mm or more.
2. Glass layer sealing strip
Aluminum alloy doors are very decorative, and there are all kinds of artistic glass. Moreover, these art glasses are single-layer and double-layer hollow. If you choose an aluminum alloy door with glass, you must pay attention to its sealing, because if the sealing is poor, the hollowed-out layer is easy to hide evil and shelter evil, which directly affects the beauty of the door.
3. Compared with the process, there are no defects in the welding.
Although the manufacturing process of aluminum alloy doors is simpler than other doors, we should pay attention to its quality and be careful when purchasing. Generally speaking, high-quality aluminum alloy doors are carefully handled in terms of workmanship, and the welding process is also very particular, so there will be no unevenness in the splicing. The poor quality aluminum alloy door is very rough, and the splicing parts are uneven.
How to straighten aluminum alloy when it is bent? What's the difference with ordinary aluminum alloy?
At present, broken-bridge aluminum doors and windows are more and more favored by the market because of their outstanding advantages such as high strength, good thermal insulation, good rigidity, good fire resistance, large lighting area, good atmospheric corrosion resistance, high comprehensive performance, long service life and good decorative effect. High-grade broken bridge aluminum alloy doors and windows have gradually become the first choice for high-grade building windows.
The word "broken bridge insulation" may be familiar to many consumers and often heard, but not many people really understand it. This also makes many ordinary consumers feel passive because of information asymmetry when buying broken bridge insulation aluminum doors and windows products. In this article, I have compiled some basic knowledge about "broken bridge insulation" so that you won't be "foggy" when choosing!
Generally speaking, the broken bridge aluminum door and window mine includes two main bodies: heat insulation broken bridge aluminum profile and insulating glass.
What is an aluminum profile with heat insulation and broken bridge?
Thermal insulation broken bridge aluminum is also called broken bridge aluminum, thermal insulation aluminum alloy and broken bridge aluminum alloy. The cavity with aluminum on both sides and plastic profile in the middle is used as heat insulation material. This innovative structural design takes into account the advantages of plastic and aluminum alloy, and meets various requirements of decorative effect, strength and aging resistance of doors and windows.
The principle of heat insulation broken bridge aluminum alloy is to pass through the heat insulation strip in the middle of aluminum profile to disconnect the aluminum profile to form a broken bridge, which effectively prevents heat conduction. The door and window sash made by this method is equipped with insulating glass, hardware, invisible screen window, glass glue, foam glue, sealing strip and so on. The portal window made in this way is called heat insulation broken bridge aluminum alloy doors and windows.
Advantages of heat insulation broken bridge aluminum
1, thermal insulation broken bridge aluminum has good thermal insulation. The inner and outer borders of the thermal insulation profile are flexibly combined, and the borders are in the form of one rubber strip, two wool strips and three seals, which are tightly sealed, excellent in air tightness and water tightness and excellent in thermal insulation performance; The window sash adopts hollow glass structure, which makes the window truly embody the excellent functions of sound insulation, heat insulation and heat preservation, and saves a lot of heating and cooling expenses. After testing, the heat transfer coefficient K is below 2.23-2.94 W/2k, and the energy saving effect is remarkable. The cost of energy saving for several years is enough to make up for the previous investment.
2, heat insulation broken bridge aluminum waterproof function. Based on the principle of pressure balance, a structured drainage system is designed. The downward slope is designed as a ladder with a drain, which has smooth drainage and good water tightness.
3. Insulate the broken bridge aluminum to prevent condensation and frost. Broken bridge aluminum profile can realize triple sealing structure of doors and windows, reasonably separate water vapor cavities, successfully realize equal pressure balance of gas and water, significantly improve the water tightness and air tightness of doors and windows, and achieve the effect of bright windows and clean windows.
4. Design of aluminum mosquito-proof screen window with heat insulation and broken bridge. Invisible screen window, which can be installed and used inside and outside, is especially suitable for mosquito-infested areas in the north.
5. Anti-theft and anti-loosening device for heat insulation broken bridge aluminum. Equipped with a unique multi-point hardware lock to ensure the stability and safety of windows in use.
6, heat insulation broken bridge aluminum sound insulation. Its structure has been carefully designed and closely connected. The test results show that the sound insulation capacity of the air can reach 30-40 dB, which can ensure that residents within 50 meters on both sides of the expressway are not disturbed by noise, and can also ensure the tranquility and warmth of the room when it is adjacent to downtown.
7, heat insulation broken bridge aluminum fire prevention function. Aluminum alloy is a metal material and will not burn.
8 insulation broken bridge aluminum. Sandstorm resistance. The inner frame straight material adopts hollow design, which has strong wind pressure deformation resistance and good earthquake resistance. Can be used in high-rise buildings and civil houses, and can design large-area windows with large lighting area; The air tightness of this kind of window is better than that of any aluminum window or plastic window, and the indoor windowsill and floor can be guaranteed to be dust-free in areas with heavy wind and sand.
9. The insulation broken bridge aluminum has high strength and is maintenance-free. Broken bridge aluminum doors and windows have high tensile strength, shear strength and thermal deformation resistance, and are durable. Broken bridge aluminum profile is not easy to be corroded by acid and alkali, not easy to yellow and fade, and hardly needs maintenance.
10, thermal insulation broken bridge aluminum has many colors and is very decorative. It can realize different colors of indoor and outdoor surfaces of doors and windows, meet customers' preference for color effect and aesthetic requirements of color gamut space, and meet the requirements of architects' personalized design. The aluminum profile adopts streamlined design and has a luxurious appearance.
1 1, heat insulation and broken bridge aluminum green building materials, circular economy. Broken aluminum doors and windows will not produce harmful substances in the production process, and all materials can be recycled. They are green building materials and environmentally friendly products, which are in line with the sustainable development of mankind.
12, thermal insulation broken bridge aluminum opening form, comfortable and durable. There are flat type, inclined type, hanging type, push-pull type, flat type and inclined type. , suitable for public buildings, residential quarters and municipal engineering; High-quality hardware fittings are durable, the operating handle is humanized, beautiful and comfortable, and it is convenient and flexible to open. Every action has been tested, and the number of fatigue tests has reached tens of thousands. Push and pull easily and silently, mature and perfect door and window processing technology, high-precision program control processing center for production, stable quality is guaranteed.