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用６ 种新型硬质合金切断刀片进行了切断加工Ｐ１１０ 钢高强度石油套管的切削试验，试验结果表明ＹＢ１２０ 涂层切断刀片的耐用度最高。
The cutting test of P110 steel high strength oil casing was carried out with 6 kinds of new carbide cutting blades. The test results show that YB120 coating cutting blade has the highest durability.