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如何获得更高强度和更好耐用度的刀具来加工“空間时代”的合金材料是目前世界各国急待研究的問题。本文报导了为寻求此項刀具材料而进行研究的初步成果。从已得到的试驗結果表明:新高速鋼的硬度值接近Rc70,抗弯强度为350公斤/毫米~2,用35米/分切削速度車削热处理到H_B352硬度值的鎳鉻钼合金鋼时,其耐用度比用著名的T15超高速鋼制成的刀具要高出两倍以上。切削速度愈高,优越性愈显著。此外,还研究了新型具有高熔点基体相的硬質合金。
How to get more strength and durability of the tool to process the “space age” alloy material is currently the world’s urgent research issues. This article reports the initial results of the study to find the tool material. The results of the tests have shown that when the hardness of the new HSS is close to that of Rc70 and the bending strength is 350 kg / mm ~ 2, when the nickel-chromium-molybdenum alloy heat-treated to a H_B352 hardness of 35 m / min is turned, Its durability is more than twice that of knives made from the famous T15 high speed steel. The higher the cutting speed, the more obvious the superiority. In addition, a new type of cemented carbide with a high melting point matrix phase has also been studied.