That degree of hardness accounts to be applicable to the black metals and have the rockwell surname degree of hardness measurement of the color metals . it is extensive to be applicable to factory car with calculate the section 该硬度计适用硬质合金、渗碳钢、淬火钢、硬铸铁及软钢、铝合金、铜合金和可锻铸铁的硬度的测定。
At goto seiki kogyosho , we accept orders for metal mold or die related tasks , including lost - wax processing , mim , mold forging , malleable cast iron working , die casting , sintered alloy working and pressing , etc . , ranging from mold making to cutting , and post - quenching grinding finishing H7 h6级的研磨站在顾客的立场上努力制造销售机械部件精密铸造mim模型锻造可锻铸铁压铸冲压等制作模型，切削加工及淬火后的研磨。
The main properties of new alcohol based spraying coatings for green sand mold are superior to the abilities of internal and outside coatings of the same kind , the surfaces of castings that are produced used new alcohol based spraying coatings are smooth without adhering sand and gas - hore 粘土湿型砂铸造新型醇基喷涂涂料的主要性能达到了国内外同类产品领先水平；生产的高锰钢、可锻铸铁和灰口铸铁产品表面光洁，无粘砂、气孔等缺陷。
Abstract : this paper introduced the induction hardening experiment of components ? the gear - park and the drive support sprocket . give some advise on the pearlitic malleable iron ' s induction heat - treatment , and show coil design intending to meet the harden profilc according to the drawing 文摘:本文介绍变速箱零件? ?驻车齿轮和链轮支架的感应淬火试验工作，提出对可锻铸铁感应淬火中值得注意的问题及针对这两种零件的特殊硬化层要求而设计的感应器。
