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前言 碳、氮、硼液体三元共渗(以下简称三元共渗)是玉门石油管理局机械厂工人、干部和技术人员遵照毛主席“把国民经济搞上去”的重要指示,发扬“独立自主,自力更生”的革命精神,经过反复实践,于一九七三年试验成功的一项化学热处理新工艺。 液体三元共渗是一种盐浴化学热处理。盐浴最初是由尿素、碳酸钠、氯化钾、氢氧化钾和硼酸五种成份组成的,经实践,目前有许多单位采用除氢氧化钾外的其它四
Preface Carbon, nitrogen, boron liquid ternary permeation (hereinafter referred to ternary co-permeation) is the Yumen Petroleum Administration Machinery Factory workers, cadres and technical personnel in accordance with Chairman Mao “to go up the national economy,” an important directive to promote “independence , Self-reliance ”revolutionary spirit, after repeated practice, in 1973 a successful test of a new chemical heat treatment process. Liquid ternary permeation is a salt bath chemical heat treatment. Salt bath was originally composed of urea, sodium carbonate, potassium chloride, potassium hydroxide and boric acid composed of five components, by practice, there are many units in addition to potassium hydroxide other four