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一、前言为加快隧道、矿山等凿岩工程,从瑞典引进了多台高效凿岩机,需大量优质钎头配套使用。但国产钎头质量不能满足要求,严重影响凿岩机效能的发挥,因而不得不高价从瑞典进口。为改变这种局面,我们研制了φ48柱齿钎头,在铁道部隧道局大瑶山隧道工地试用。结果表明该产品是国内钎头中质量最高的一种,具有钻速快、进尺多、寿命长、不易掉齿等优点,已接近瑞典进口的同
I. Introduction To speed up the tunneling, mining and other rock drilling projects, a number of highly efficient rock drill machines have been introduced from Sweden. A large number of high quality drill heads are required to be used in combination. However, the quality of domestic drill bit can not meet the requirements, seriously affecting the performance of rock drill, and therefore had to import high prices from Sweden. In order to change this situation, we have developed a φ48 column tooth bit, the Ministry of Railways Tunnel Dayuoshan tunnel site trial. The results show that the product is the highest quality drill bit in the world, with drilling speed fast, more footage, long life, not easy to fall off the teeth, etc., has been close to the Swedish import