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Dongguan Life-Style Casting Co.,Ltd

Address: Zhonghuiliyang Shidai, Dongcheng, Dongguan, Guangdong, China 523180

GeneralManager: Sherry Luo

Tel: 86-769-89865086

Mobile: 86-13712854626

Fax: 86-769-89865086

Whatsapp: 86-13712854626

E-mail: info@life-stylecasting.com

               sherryluo86@gmail.com 

Skype: miaomiao91919

www.lifestylecasting.com

Solve The Difficult Problem Of Auto Casting Part Surface

Solve the difficult problem of Auto Casting Part surface
Auto Casting Part iron is up to 2% (mass fraction) of iron and carbon alloy, the material in the carbon only a small amount of iron and solid solution, mostly in the form of graphite or cementite, graphite will reduce the precipitation potential, Thus hindering the deposition of zinc.
At the same time as the surface of the material is too rough, covering the trachoma and shrinkage, the composition contains phosphorus, sulfur, silicon, graphite and titanium and other elements, resulting in electroplating process over-hydrogen phenomenon is too low, easily lead to hydrogen evolution, Metal deposition is difficult; and pickling will increase the adsorption capacity of hydrogen atoms, adsorption of hydrogen atoms in addition to part of the combined into the hydrogen emissions to the air, there will be a considerable part of the hydrogen atoms to the cast iron matrix diffusion, resulting in more Many of the hydrogen pressure, not only will affect the mechanical properties of the Auto Casting Part itself, in the electroplating process will also cause a lot of hydrogen, not only seriously affect the coating fastness, but also cause the current efficiency drastic decline, further increase the difficulty of plating The
There are many factors that affect the quality of Auto Casting Partings
The first is the design of Auto Casting Parting process. In order to determine the geometrical shape and size of the castings according to the working conditions and the properties of the metal materials, it is necessary to consider the rationality of the design from the viewpoint of casting alloy and casting process characteristics, that is, the obvious size effect and solidification, Shrinkage, stress and other issues, in order to avoid or reduce the composition of Auto Casting Partings segregation, deformation, cracking and other defects.
The second must have a reasonable casting process. According to the structure, weight and size of castings, casting alloy characteristics and production conditions, select the appropriate sub-surface and shape, core method, reasonable set of casting tendons, cold iron, riser and pouring system. To ensure access to high quality Auto Casting Parts.
The third is the quality of raw materials for casting. Metal inclusions, refractories, fuels, fluxes, modifiers and foundry sand, sand binder, paint and other materials substandard quality, will make the Auto Casting Parts produce pores, pinholes, slag, sticky sand and other defects, affecting the Auto Casting Part Appearance quality and internal quality, serious Auto Casting Parts will be scrapped. The fourth is the process operation, to develop a reasonable process of operation procedures to improve the technical level of workers, so that the correct implementation of the rules.
Manufacturing production, the quality of the casting to control and inspection. First of all to develop from the raw materials, auxiliary materials to each specific product control and inspection of the code and technical conditions. For each process are strictly in accordance with the code of practice and technical conditions for control and testing. Finally, the finished product for quality inspection. To be equipped with a reasonable detection method and the appropriate detection staff. Generally, the appearance quality of the professional automobile castings can be used to judge the surface roughness of the castings. The fine cracks on the surface can be checked by color method and magnetic powder method.
 The quality of Auto Casting Partings includes appearance quality, intrinsic quality and quality of use. The internal quality refers to the chemical composition, physical properties, mechanical properties, microstructure of the casting and the holes, cracks and inclusions present in the casting. The internal quality of the castings is such that the surface roughness, surface defects, size deviation, shape deviation and weight deviation. Segregation, etc.; the use of quality refers to the work of copper under different conditions in the durability of the work, including wear, corrosion resistance, resistance to cold heat, fatigue, shock absorption performance and cutting, weldability and other process performance.
Auto Casting Partings due to a variety of factors, often appear stomata, pinholes, slag, cracks, pits and other defects. Commonly used repair equipment for the argon arc welding machine, resistance welding machine, cold welding machine. For the quality and appearance of the casting is not high defects can be used argon arc welding machine and other large heat, fast welding machine to repair.
The quality of Auto Casting Partings has a significant impact on the performance of mechanical products. For example, the wear resistance and dimensional stability of the machine tool casting directly affect the accuracy of the machine to maintain the life of various types of pump impeller, shell and hydraulic parts of the cavity size, profile accuracy and surface roughness, a direct impact on the pump And the hydraulic system work efficiency, energy consumption and the development of cavitation; internal combustion engine cylinder block, cylinder head, cylinder liner, piston ring, exhaust pipe and other pieces of copper strength and resistance to cold heat, directly affect the work of the engine life.