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过去我矿锻造φ100与φ120潜孔钻机三角超前刃钻头(图1)的方法是:下直径φ80～φ90的坯料经加热、锻两端圆、分成三角、气割φ48凹塘部分、再加热、进模予锻、切边、进模终锻、切边等11道工序,需予锻和终锻几套模具,工序繁杂,劳动强度大,生产效率低,成本高。φ100与φ120超前刃三角钻头材质为40Gr,坯料规格φ55,使用400公斤或560公斤空气锤进行锻造。
In the past, mine forged φ100 and φ120 DTH drilling rig triangular leading edge drill (Figure 1) method is: under the diameter of φ80 ~ φ90 blank by heating, forging both ends of the circle, divided into triangles, gas cutting φ48 concave pond, and then heating Die to forging, trimming, into the die forging, trimming and other 11 processes, to be forged and finally forging several sets of molds, complicated processes, labor-intensive, low productivity, high cost. φ100 and φ120 leading edge triangular drill material is 40Gr, billet size φ55, using 400 kg or 560 kg air hammer forging.