... , die-casting moulds. XKS-350 harden, intensify metal surface equipment Applications: 1. Hardening ferrous metals, hardness up to HV1100-1400 ... 1400 (HRC70-72 ) Characteristic of harden, intensify metal surface equipment 1.portable power, portal type, easy to carry and operate ... operating, no need occupy labors energy.6.Use electrical erosion remove principle, no need contact work pieces; no force in ...