Material issues of polysilicon devices
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Can all the components of the polysilicon plant be made of carbon steel?
Lz’s scope is too broad. What is a polysilicon plant? Is it a device related to polysilicon? Then there’s more.
...Obviously it won’t work. That would be too tragic
There are certain applications in which carbon steel must absolutely not be used, such as for pipes carrying low-temperature refrigerants. . . .
How do you ensure the purity of the polysilicon produced using carbon steel pipes?
Definitely not. Stainless steel is used in many situations.
Distillation processes definitely require stainless steel to a large extent, as do the tank areas and the heat exchangers in synthetic furnaces; different grades of stainless steel are used
It’s absolutely impossible to use carbon steel for everything; components that come into contact with materials or are exposed to high temperatures are generally made of stainless steel. Even when stainless steel is used, problems can arise due to excessive carbon content, not to mention the use of carbon steel pipes and equipment
It can be selected according to the requirements of each processing stage; for example, it cannot be used in the synthesis process, distillation, and subsequent stages
Hehe, if leakproofness can be guaranteed, carbon steel is actually better than stainless steel; especially in areas where high-temperature media are present, it’s simply impossible to use stainless steel at an electronic grade
Sure, let’s wait for a disaster to happen