一、根据钢材的性能和炭量,利用钻探队所能使用的无缝钢管来代替炭素钎子杆,试验证明效果良好,初步总结如下:锻制方法:将苏制 BOT—1型锻钎机的窝车卸下来,利用钎头模型改制不同规格(见表1)的初压管模型(附图)。 First, according to the performance of the steel and the amount of carbon, the use of seamless steel pipe can replace the carbon rod drill rod, the test proved good results, the initial summary is as follows: Forging method: the Soviet BOT-1 forging brazing machine Of the nest car unloaded, the use of drill bit model for the reform of different specifications (see Table 1) of the first pressure tube model (with photos).