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在高速钢的热浴淬火(Hot-quenching)试验中,发现关于18—4—1高速铜的硬度、韧性、以及奥斯田体等的相互变化。在高速钢的硬化过程中),常发现碎裂现象,造成很多的次品。这个试验,目的就是想借减小淬冷温度和硬化温度的温度差,以消除破碎应力。高速铜有着同一的特性,就是在赤热状态下仍保持其硬度;主要的是因为麻顿赛体和复合金碳化物加入于基体内,而增加其更度与抗磨性。有些元素(特别是钨与钼),将高温下的稳定性传给麻顿赛体,于是使高速铜在正常切削温度下,仍保持其硬度。在2350°F硬化调度附近,钢的晶体结构包括含有碳、钨、钒、铬的奥斯田基体。除了这些合金
In a hot-quenching test of high-speed steel, it was found that hardness, toughness, and the like of the 18-4-1 high-speed copper change from each other to the fields of Otis. In the high-speed steel hardening process), often found fragmentation, resulting in a lot of defective products. The purpose of this test is to reduce the temperature difference between the quenching temperature and the hardening temperature to eliminate the crushing stress. High-speed copper has the same characteristics, that is, in the red hot state still maintain its hardness; the main thing is because of Dayton match body and composite gold carbide added to the matrix, and increase their degree of wear and resistance. Some elements (especially tungsten and molybdenum) pass the stability at high temperatures to the Mathew body, thus allowing the high speed copper to retain its hardness at normal cutting temperatures. In the vicinity of the 2350 ° F hardening schedule, the crystal structure of steel includes an austenite matrix containing carbon, tungsten, vanadium and chromium. In addition to these alloys