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目前高速钢原材料的低倍组织,用冶标YB49-64结构钢低倍组织缺陷评级图。通过使用,我们觉得用结构钢标准图片评定高速工具钢低倍组织,存在不少问题,往往对评级标准有不同的理解,造成误判、错判,产生了对质量问题的异议。看来用YB49-64结构钢的低倍组织标准,不能适用于高速钢。我厂为了正确的掌握钢材质量,曾与某些钢厂共同试验,通过生产实践提供国产高速钢(钨系)低倍组织的标准图片,从而防止了因材料造成的废次品,保证了产品用钢的质量。
At present, high-speed steel raw materials, low magnification organizations, with YB49-64 metallurgical steel microstructure defects rating chart. Through the use, we think that using structural steel standard pictures to evaluate low-magnification high-speed tool steel organization, there are many problems, often have different understanding of the rating criteria, resulting in misjudgment, wrong judgment, resulting in objection to the quality problem. It seems that using YB49-64 low magnification structural steel standards, can not be applied to high-speed steel. I plant in order to correctly grasp the quality of steel, and some steel mills have been tested together, through the production of high-speed steel to provide domestic standard (Tungsten) low magnification pictures, thus preventing the waste due to the material caused by defective products to ensure that products The quality of steel.