Important Reasons for Tearing on the Surface of Aluminum Profiles and Elimination Management Methods-WJW Aluminum Supplier Aluminum
Author： WJW Aluminum Window Manufacturers
Important reasons for the occurrence of tearing on the surface of aluminum profiles and management measures for elimination
Characteristics on the surface of aluminum profiles: The surface of aluminum profiles presents a longitudinal jagged repeat interval line, which is severely directly broken and separated .
Cause of the surface cracks of aluminum profiles:
(1) The aluminum profile squeezing coefficient has too much impact, and the environmental temperature requirements are too high (stick, cylinder, mold three temperature), squeezing China's speed too fast;
(2) The pressure of squeezing pressure is unstable, high and low, or the speed difference between multiple speed regulation systems is obvious.
(C) At the end of the head (stamping) at the head of the aluminum profile, the end of the deceleration or running speed, the aluminum infiltration in the large dead area;
(4) The quality management of the stick is poor. The curtain wall is the outer wall of the building. It is hung up like a curtain, so it is also called a suspension wall. It is a lightweight wall commonly used in modern large and high -rise buildings. The structured enclosure structure consisting of the structural frame and inlaid plate does not bear the main structure load and function of the main structure. The exterior wall of the building curtain wall building is usually composed of the panel and the support structure behind. Aluminum profiles are coating technology. It adds pre -plating and electroplating process steps on the basis of conventional titanium plating process. The pre -plating process is to place the activated plating parts in the water solution of salt and hydrochloride for chemical treatment. Burid (V3 aluminum) is too thin;
(5) The design and manufacturing traffic is unreasonable than the squeezing mold with severe disorders.
How to eliminate the surface cracks of aluminum profiles:
(1) When the squeezing coefficient is too large, you can process the alien profiles on the small machine and adopt a suitable extrusion ratio. Strictly control the squeezing temperature according to the requirements of the production process, and use the appropriate squeeze speed;
(2) The spirit of the operator is mainly concentrated, the speed regulation is stable, and the pressure we cannot be high or low. When changing the gear, manually control the operator's cooperation;
(3) When the machine is printed, the dead area or V3 volume (aluminum surface layer) at the front and rear ends of the aluminum profile. Aluminum impurities, poor quality, and insufficient viscosity, should slow down the squeezing speed of the head and tail of the material;
(4) The surface of the aluminum rod material should be finely handled with clean oil and pollution, and the internal management organization must meet the standards, and the balance is normal (5%of the length of the stick);
(5) Designers of squeezing molds should design and manufacture qualified molds with uniform traffic.
