硅钢片冲件的毛刺大,拱弯不平,模具磨损严重,寿命短是冲压生产中普遍遇到的难题。硅钢片冲模寿命短的主要原因在于:1)硅钢片中含有一定量的硅,并在生产过程中形成了硅酸镁(指冷轧取向硅钢片)或二氧化硅,冷轧硅钢片表面还有磷酸盐,铬酸盐等涂层,这些物质皆质地硬脆,对冲模刃 Silicon steel pieces of the big burr, uneven arch, mold wear serious, short life is generally encountered in stamping production problems. The main reason for the short life of silicon steel die is: 1) silicon steel contains a certain amount of silicon, and in the production process formed magnesium silicate (cold-oriented silicon steel sheet) or silicon dioxide, cold-rolled silicon steel surface also Phosphate, chromate and other coatings, these materials are hard and brittle, hedge cutting edge