全国服务热线Air holes often appear in the casting parts, but the outer surface can't be seen, and they appear during machining. It's very distressing to see that a part will be scrapped if it has air holes after processing. The basic method to solve the problem is: phenomenon description - cause analysis - measure formulation - effect verification - further improvement. Since you are engaged in heat-resistant steel casting, you should analyze the causes of air holes, Put forward the corresponding measures; Because you are at the scene, everyone's idea is also a rough one. We can't analyze the situation in detail for you. We have to make a good analysis by ourselves and colleagues to solve the problem.
Jinguan special steel puts forward several points for reference
1. How dry is the core sand? Is it mixed with organic impurities?
2. Is the pouring ladle over ladle so that more air is brought in? Can I change the ladle for pouring?
3. What is the air permeability of mold and sand core?
4. Is there any defect in gating system design?
Two aspects, one is whether the resin gas generation is too large, the other is whether the steel deoxidation
