我厂生产的拉延件,材料品种繁多。为适应各种材料拉延的需要,我们试用过多种润滑剂。通过多年实践认为,在拉延中,比较理想的润滑剂是猪油,其特点如下: 1.猪油不但是属于一种高粘度油,不仅使模具表面得到润滑而且在拉延大件、厚料时,由于压边力大,模具表面与材料之间的 I plant the production of drawing pieces, a wide variety of materials. In order to meet the needs of drawing a variety of materials, we have tried a variety of lubricants. Through years of practice, the preferred lubricant in lavaging is lard. Its characteristics are as follows: 1. Lard is not only a kind of high viscosity oil, which not only lubricates the mold surface, Material, due to the blank holder force, the mold surface and the material between