论文部分内容阅读
滚珠钢中的氧化物、硫化物、硅酸盐等是存在于钢中不溶解的非金属夹杂物,对滚珠钢的性能危害极大。其中点状夹杂物降低疲劳强度、引起淬火裂纹敏感性强、造成点腐蚀和降低制品的光洁度。因此对非金属夹杂物的检验是不应忽视的。因其评级准确与否,直接影响钢材合格与报废的问题,是钢材质量的一个重要检验手段。由于对标准理解不同,实际生产检验的差别,各厂尚有不同看法。本文仅就我厂生产检验的实际情况,谈谈我们对点状评级问题的一些看法和意见。
Balls of steel oxide, sulfide, silicate, etc. are present in the steel insoluble in non-metallic inclusions, the performance of ball steel great harm. Point-like inclusions which reduce the fatigue strength, causing quench crack sensitivity, resulting in point corrosion and reduce the finish of the product. Therefore, the inspection of non-metallic inclusions should not be ignored. Because of its rating accuracy or not, the direct impact on steel qualified and scrapped the problem, is an important tool for testing the quality of steel. Due to the different standards of understanding, the difference between the actual production test, the plant still have different views. This article only on the actual situation of our factory production test, to talk about our point of view rating some of the opinions and opinions.