工模具及其零件打有印记。有的单位用字头打印记,往往零件需经磨削而把印记磨掉。有的采用电笔写印记,但不够清晰,且对淬火零件或一些小件无法适用。我厂采用电腐蚀方法来加工印记,效果比较好。 具体方法:首先在被打印记零件的表面涂上一层薄薄的沥青速干漆(其成分氧化沥青39.2％,纯苯47.2％,松节油10％,石油 Mold and its parts have a mark. Some units use the prefix print note, often parts need to be ground and worn off the mark. Some use electric pen to write the mark, but not clear enough, and the quenching part or some small pieces can not be applied. I plant the use of electric corrosion method to process imprint, the effect is better. Specific methods: First, be printed on the surface of the parts marked with a thin layer of bituminous dry paint (the composition of the asphalt 39.2%, benzene 47.2%, turpentine 10%, oil