轧制钻头新工艺有生产效率高、节约贵重高速钢等,符合多快好省的优点,近年来发展很快,但由于目前国内外一般的四辊轧机还不能轧制锥柄大于刃部的钻头,且这种钻头的老铣制工艺也很复杂,加工困难效率低,车、铣、磨都易弯曲,而这种钻头又供不应求,需要量很大。我厂遵照伟大领袖毛 The new technology of rolling bit has the advantages of high production efficiency, saving expensive high-speed steel, etc., in line with the advantages of more fast and better province, developed rapidly in recent years. However, since the conventional four-high rolling mill at home and abroad can not roll taper shank greater than the blade Drill bit, and the old milling process of this drill bit is also very complex, difficult processing efficiency, car, milling, grinding are easy to bend, and this bit is in short supply, the need is great. Our factory follows the great leader Mao