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23
2021
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01
Foundry: Introduction to the reasons affecting the quality of agricultural machinery castings
Foundry
Foundry: The quality of agricultural machinery castings has a significant impact on the performance of mechanical products. For example, the wear resistance and dimensional stability of equipment castings directly affect the accuracy and service life of machine tools. The size of the impeller, the cavity of the housing and hydraulic parts, the accuracy of the molding line, and the surface roughness of various pumps directly affect the working efficiency, energy consumption, and cavitation development of the pump and hydraulic system.
Foundry The quality of agricultural machinery castings has a greater impact on the performance of mechanical products. For example, the wear resistance and dimensional stability of equipment castings directly affect the accuracy and service life of machine tools. The size of the impeller, the inner cavity of the housing and hydraulic parts, the accuracy of the molding line, and the surface roughness of various pumps directly affect the working efficiency, energy consumption, and cavitation development of the pump and hydraulic system.
Foundry: Reasons affecting the quality of agricultural machinery castings
1. First is the design process of cast iron parts. During design, in addition to determining the geometry and dimensions of cast iron parts based on working conditions and metal material properties, the rationality of the design should also be considered from the perspective of casting alloy and casting process characteristics. That is: if there are obvious size effects and problems such as solidification, shrinkage, and stress, the occurrence of defects can be avoided or reduced, such as component segregation, deformation, and cracking of cast iron parts.
2. Secondly, there must be a reasonable casting process. That is, according to the structure, weight and size of the cast iron part, the characteristics of the cast alloy and production conditions, select the appropriate parting surface, shape and core making method, and reasonably set up casting ribs, chills, risers and gating systems.
3. is the quality of raw materials for agricultural machinery castings. The unqualified quality of metal materials, refractory materials, fuels, fluxes, modifiers, and casting sand, sand binders, coatings and other materials will cause pores, pinholes, slag inclusions, sand inclusions and other defects in cast iron parts, thereby affecting the quality. In severe cases, the appearance quality and internal quality will cause the cast iron to be scrapped.
4. is the process operation. Develop reasonable process operating procedures to improve workers' technical level so that they can correctly implement process procedures. In the process of manufacturing agricultural machinery castings, it is necessary to control and inspect the quality of castings. First, formulate process rules and technical conditions, and control and inspect from raw materials and auxiliary materials to each specific product. Each process must be strictly controlled and inspected in accordance with process rules and technical conditions.
Foundry: Then, check the quality of the finished product Agricultural machinery castings To be equipped with reasonable testing methods and appropriate testing personnel. Usually, for the detection of the appearance quality of cast iron parts, comparison samples can be used to judge the surface roughness of the castings; the coloring method and magnetic particle method can also be used to check the fine cracks on the surface.
Foundry, agricultural machinery castings
Shandong Gongchen Machinery Technology Co., Ltd.
Contact QQ: 258506508
Mobile Number:15621618888
Phone:0536-7691368 7691229
Fax: 0536-7691229
Contact Email:guisongzhng8@gmail.com
Website:www.shandonggongchen.com Gongchen.China Valve Castings.China
Address: Mucun Town, Fangzi District, Weifang City, Shandong Province
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