论文部分内容阅读
一九七五年底，我们到上海学习上海砂轮厂中频热压人造金刚石钻头的经验，于一九七六年在湖北探矿厂开始试制第一批人造金刚石钻头，到第一地质大队试验，由于胎体不耐磨，钻头寿命短。在试制第二批（四个）人造金刚石钻头时，我认为980℃烧结温度过高，会降低人造金刚石强度，我提出要降低烧结温度到950℃，就议定用两种烧结温度，五、七、九号钻头烧结温度仍用980℃，六号钻头改用950℃。烧结后测定胎体硬度，五号钻头HRC40；七号钻头HRC34；九号钻头HRC33；六号钻头HRC30。根据上海砂轮厂的经验采用63号配方的胎体硬度要求HRC38～45，才能获得足够的密度和强度。而六号钻头的胎体硬度HRC30，显然是过低了。经研究确定进行第二
In the end of 1975, we went to Shanghai to study the experience of the Shanghai Grinding Wheel MF Die. In 1976, we started trial production of the first batch of synthetic diamond drill bits in the exploration plant in Hubei Province. When we arrived at the first Geological Brigade, Body wear-resistant, short drill life. In the trial production of the second (four) synthetic diamond bit, I think the 980 ℃ sintering temperature is too high, will reduce the synthetic diamond strength, I propose to reduce the sintering temperature to 950 ℃, the agreed two sintering temperature, five, seven , No. 9 bit sintering temperature is still 980 ℃, No. 6 drill to 950 ℃. After the determination of the hardness of the carcass, No. 5 drill HRC40; No. 7 drill HRC34; No. 9 drill HRC33; No. 6 drill HRC30. Based on the experience of Shanghai Grinding Wheel Factory, HRC38 ~ 45 is adopted for the carcass hardness of No. 63 formula to obtain sufficient density and strength. The sixth bit of the matrix hardness HRC30, apparently too low. The study confirmed the second