1. Design craftsmanship of castings. When designing, in addition to determining the geometry and size of the casting according to the working conditions and the properties of the metal material, the rationality of the design must also be considered from the perspective of the casting process, that is, the obvious size effect and solidification, shrinkage, stress, etc. To avoid or reduce the occurrence of defects such as composition segregation, deformation and cracking of cast iron plates.

 

2. There is a reasonable casting process. That is, according to the casting structure, weight and size, castability and production conditions, select the appropriate parting surface and shape, core making method, and reasonably set the casting ribs, cold iron, riser and gating system. to secure castings.

 

3. For process operation, it is necessary to formulate reasonable process operation regulations, improve the technical level of workers, and make the process regulations be implemented correctly.

 

4. The quality of casting raw materials. The quality of metal charge, refractory material, fuel, flux, modifier, foundry sand, molding sand binder, paint and other materials is substandard, which will cause defects such as pores, pinholes, slag inclusion, and sticky sand in the casting, which will affect the appearance of the iron casting. Quality and internal quality, the casting will be scrapped in severe cases.

 

5. Intrinsic quality. Mainly refers to the chemical composition, physical properties, mechanical properties, metallographic structure of the casting, and the holes, cracks, inclusions, segregation, etc. in the casting; appearance quality refers to the surface roughness, surface defects, dimensional deviation, shape deviation, weight of the casting. deviation.

 

6.Quality of use. It refers to the working durability of castings under different conditions, including wear resistance, resistance to cold and heat, fatigue, shock absorption, etc., as well as process properties such as machinability and weldability.

 

cast iron floor plate

 

Jinggong Measuring Tools Producing Co., Ltd is specializing in manufacturing and exporting all kinds of cast iron products，especially for cast iron floor plates, cast iron surface plates, cast iron clamping plates, cast iron angle plates, cast iron box table and other machine tool castings. The products have the features of reasonable design, stable structure, superior quality and competitive price.