第一机械工业部于1958年1月25日至1月31日在上海召开了冷作模具的热处理会议。参加会议的有部属10个单位和35个工厂以及部外2个单位和2个工厂,技术人员共80名。会议的主要目的在于广泛地交流冷作模具热处理工艺方面的经验,通过经验交流将较为成熟的经验订成工 The first Ministry of Machinery Industry in January 25, 1958 to January 31 held in Shanghai cold-working die heat treatment meeting. Attend the meeting, there are 10 units and 35 factories and two units outside the department and two factories, a total of 80 technical staff. The main purpose of the meeting is to exchange widely experience in the cold-working die heat treatment process and to exchange the more mature experiences through experience exchange