How does the steel-plastic co-firing doors and windows angle?
Low tensile strength, hardware accessories installation node is relatively weak.
As the rapid development of plastic doors and windows market, the rapid increase in manufacturers, the size of different sizes, the market is more chaotic, the quality of the profile is difficult to ensure that all meet the standard. Coupled with hand-workshop doors and windows processing workers in the steel lining cut corners, making the phenomenon more serious, and therefore difficult to apply to high-rise buildings. Even if the qualified profiles, adding reinforced steel lining, due to the addition of steel lining is not closed together, it is difficult to play the role of steel lining.
As a result of the above-mentioned subjective and objective reasons, some experts have suggested that high-rise buildings using ordinary "plastic doors and windows" should take a cautious attitude.
Third, steel and plastic coherent doors and windows of the technological breakthrough
Although this technology has many advantages, but also after the aluminum-plastic composite rod elastic modulus is low, large cross-section, high cost weaknesses.
Specific performance:
1, some profiles manufacturers to save production costs, the use of low-quality PVC raw materials, increase the amount of filler, the lack of expensive anti-aging agent and other additives, resulting in low strength products, easy aging, poor resistance to nail.
2, ordinary plastic window fan and the box is made by welding, the lining of the lining of the steel is not integrated into the corner, the plastic window of the four corners of the welding strength to be affected by various factors, such as the expected precision, Temperature, velocity, pressure and other parameters, and the stability of the detection of angular strength showed a difference. And the plastic window assembly structure and process instability, even if the plastic window of the main force components of the stiffness and strength can withstand greater wind load, but the angular strength of the four corners can withstand greater wind load, is still worth studying The problem.
3, hardware installation is not strong. Actually limited to the structure and other reasons, some accessories can not be connected with the steel lining. Plastic doors and windows hardware accessories according to industry standards: important hardware accessories should be connected with the steel lining, but in fact limited to the structure or other reasons, some accessories can not be connected with the steel lined.
