在国内锻造生产中,普遍存在着模锻件折纹问题。有些折纹明显的在锻件的表面,用肉眼可以看到;有些则很细小,只有一根头发的几分之一或几十分之一,它必须经过酸洗或磁力探伤之后才能发现。由于折纹的存在,给生产带来很多麻烦,特别是细小的折纹,开始很不容易发现。例如我们工厂生产的某个零件,它是经过几十道工序加工的,最后装到产品上经试车才发现因锻件折纹而漏油,造成了严重的经济损失。所以锻件折纹的危害性是十分严重 Forging production in the country, the prevalence of forging pieces of the problem of folding. Some folds are visible on the surface of the forgings, visible to the naked eye; others are small, only a fraction or a few tenths of a hair and must be found after pickling or magnetic testing. As the existence of creases, to produce a lot of trouble, especially the small folds, the beginning is not easy to find. For example, a part produced by our factory is processed through dozens of processes. After being loaded on the product, it is found that the test is carried out to find out the oil leakage caused by the forging crease, resulting in serious economic losses. Therefore, the danger of forging crease is very serious