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我国球齿钎头研制、生产的工艺方法,主要有冷压固齿法、沉底感应钎焊法和热嵌固齿法。1983年初中南矿冶学院开始对热嵌固齿工艺方法进行探讨。通过分析、试验确定了工艺技术参数,选用新工艺生产的YJ(H)牌新型合金齿和国产仿FF-710钢为材料,应用合金强化处理新工术,采用专门加工技术,从而研制成《H》牌钎头。通过与国内外同类钎头作批量对比试验,钎头平均寿命达到瑞典同类产品的水平,单位炮孔的钎头费用仅为瑞典钎头的30％左右。本研究成果填补了我国热固嵌齿方法的空白。本文还对热嵌固齿方法作了较全面的分析。
China’s ball tooth bit development, production technology, there are cold-pressure solid tooth method, the bottom induction brazing method and the heat embedded solid tooth method. In early 1983, Zhongnan Mining and Metallurgical Institute started to discuss the hot embedded solid tooth technology. Through analyzing and experimenting, we determined the technical parameters of the process, selected the new alloy YJ (H) brand new alloy tooth and the domestic imitation FF-710 steel as the material, applied the new technology of alloy strengthening treatment and specialized processing technology to develop “ H ”brand drill bit. Through the domestic and foreign similar bit for bulk comparison test, the average life expectancy reached the level of similar products in Sweden, the unit of drilling bit costs only about 30% of the Swedish bit. The results of this study have filled the blank of thermosetting cogs in our country. This article also made a more comprehensive analysis of the hot embedded solid tooth method.