How Do Steel Casting Manufacturers Control The Quality of Stainless Steel Castings?

From the perspective of various defects of stainless steel, as well as the causes of these defects, there are many factors that can affect the defects of castings, and the process control of each link will affect the final casting quality. Combined with the casting defects encountered in the past production practice, steel casting manufacturers can strictly control the quality from the following three aspects.

According to the engineers of the steel casting manufacturer, the raw material control of stainless steel casting, because the surface material will be in direct contact with the alloy melt, so it has a very important impact on the surface quality of the casting. We can choose the staggered neutral refractory coating as the surface material, and the content of ZrSiO in sand making is a little higher, and the impurity content of other oxides such as Mg, Na, K, Ca and so on should be well controlled. In order to ensure the stability of the quality of stainless steel castings, in terms of casting sand, it is necessary to select 1-2 companies to supply, and regularly entrust the corresponding research institutions to test the foundry sand, and the specific requirements can be in accordance with the standard HB5349-1986 of the Ministry of Aviation Industry, and the acceptance should be carried out in accordance with this standard in the future.

The supply of stainless steel casting and auxiliary materials should also maintain a relatively stable channel, strictly control the quality of the charge, and clean up before entering the furnace, so that there can be no rust and oil stains and other stains, and all the operations of the steel casting manufacturer must be carried out in strict accordance with the regulations, and foreign inclusions can not be allowed to enter the inside of the stainless steel casting, causing unnecessary defects.