公开/公告号: US3556499 公开/公告日期: 01/19/1971 申请(专利权)人: Chemetron Corporation (Chicago, IL) 发明人: GL Hammon 被引量: 6 摘要: In apparatus for the hardening of a longitudinal surface of an elongate metal member, a heating means and a quenching means, means for advancin...