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众所周知,显示晶粒粗化温度的主要方法有3种:氧化法、晶粒边界腐蚀法、渗碳法。氧化法适用于一切钢种,但由于不锈钢、耐热钢有良好的显示效果,对于结构钢较难掌握;晶粒边界腐蚀法几乎适用于绝大部分钢种,尤其对于显示有马氏体、贝氏体组织钢的原奥体晶粒效果最佳;渗碳法主要用于渗碳钢,但实际上由于渗碳法显示晶粒度周期长,工艺复杂,渗碳钢也常采用晶粒边界腐蚀法显示晶粒度。然
As we all know, there are three main methods to show the grain coarsening temperature: oxidation method, grain boundary corrosion method, carburizing method. Oxidation method is suitable for all kinds of steel, but because of stainless steel, heat-resistant steel has a good display, difficult to grasp for structural steel; grain boundary corrosion method is applicable to almost all steel, especially for the show martensite, Bainite steel has the best original austenite grain effect; carburizing method is mainly used for carburizing steel, but in fact due to the carburizing method shows a long grain size cycle, the process is complicated, the carburizing steel is often used grain Boundary etching shows grain size. Of course