Powder Coated Aluminum extruded aluminum tube , aluminum window and door frames
|Aluminum extruded aluminum tube,aluminum window and door frames
|Alloy 6060, 6061, 6063, etc.
|Different colors available (black, blue, green, champagne, bronze, golden, vermillion, etc.)
|Mill finish, anodized, electrophoretic coating, powder coating, thermal break, wood grain/wood-in-shift, etc.
|Based on your drawing or use our mould free
|Usual practice: within 15 working days against payment
|Windows, doors, curtain wall, solar panel, LED panel, heat sink, industry, etc.
|ISO9001-2008 Quality System,
The process control elements are described as follows:
In the process of molding or storage, the surface produces rust. Because of rust layer structure is loose, and substrate adhesion not firm, and the oxide of iron and aluminum can be galvanic cell, further make aluminum corrosion, the coating soon be destroyed, so it must be cleaned out before painting. Product pickling is usually used, it will not make the aluminum workpiece deformation, rust can be cleared, in every corner of rust removing speed, relatively low cost. The quality of pickling is mainly due to the fact that the non-visible oxide, rust and over-erosion are not due to the following factors.
(1) free acidity (FA)
It is the most direct and effective evaluation method to measure the effect of the acid washing trough. Low free acidity, bad rust removal effect. When the acid level of the free acid is too high, the acid fog in the working environment is too high to be harmful to labor protection. The surface of aluminum is prone to "over-erosion"; Moreover, it is difficult to clean the residue, which can cause the contamination of the liquid.
(2) temperature, time
Most pickling was conducted at room temperature, when using heating pickling, general control between 40 ℃ ~ 70 ℃, while the temperature to improve the ability of pickling, but too high temperature will aggravate the workpiece, the equipment corrosion, the influence on the work environment is also very bad; And the acid cleaning time should be as short as possible in order to reduce the corrosion of aluminum and the effect of hydrogen brittleness. The temperature of the tank and the processing time of the workpiece should be strictly controlled.
(3) aging of pollution
Acid in the process of removing rust, the oil or other impurities can be brought in, and the suspension impurities can be removed by scraping. When the iron over a certain content of soluble liquid tank cleaning effect will not only greatly reduced, and the excess iron ion with the residual liquid mixed with phosphating slot on the surface of the workpiece, accelerated phosphating bath pollution aging, seriously affect the quality of workpiece phosphating, general acid iron ions content should be controlled in less than 6% ~ 10% advisable. The fluid must be replaced when controlling the target.
Corporate Introduction :
Guangdong Yong long Aluminum Co., Ltd. is located in the No. 10 (Sanjiang market) of Leping Town, Sanshui District, Foshan. The company was founded in 1997. It is a comprehensive and large-scale aluminum profile enterprise integrating the research and development, production and sales of aluminum alloy profiles. The company is leading the "Hongying" brand. Strong comprehensive strength and excellent service make Yong long "Hongying" sell well all over the country and exported to Southeast Asia, Europe, South America and many other countries.
The company has 900 employees, including 120 high and intermediate engineering technology and management personnel, with advanced and perfect design, production, testing and testing methods as well as perfect sales network and after-sales service system. The products sell well in more than 10 national and foreign ports, Australia and Taiwan areas.
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