Step 4 - the background is then stippled with a carbidetool sharpened to a needle point.
步骤4 -背景，然后用削尖的点画到一个针尖一硬质合金工具。
2
The feature of machining harden steel by means of EHM are: it can utilize the carbidetool to machine the harden steel in engine lathe.
采用导电加热切削技术切削淬硬钢的特点在于：可以采用普通机床、硬质合金刀具对淬硬钢进行硬车削加工。
3
The advantages of coated cemented carbidetool in dry milling of high-strength steel are demonstrated, and the workpiece surface roughness reaches the level of semi-finishing grinding.