钢件内部的组成,决定钢件的性质和用途。奥斯田体是钢件在高温时的一种「相」,很不稳定,温度一降低即行分解。不同的化学成分和冷却速率,可以分解成一种或多种不同的组成:包括肥粒体、炭化铁体、波来体、本耐体、或麻顿赛体。钢件在淬火后,我们希望得到的是硬度很高的麻顿赛体,但实际上在室温情况下只有一部份奥斯田体转变成为麻顿赛体,其余留下来的奥斯田体在 The composition of the steel interior determines the nature and purpose of the steel. The osada body is a “phase” of steel parts at high temperatures and is very unstable. It is decomposed when the temperature is lowered. Different chemical composition and cooling rate can be decomposed into one or more different compositions: including granules, carbonized iron, boliform, native body, or Ma Dunsai. After the quenching of steel, we hope to obtain a highly-matched Matchon, but in fact, at room temperature, only a part of the Oshita body will be transformed into the Mattenoid body, and the rest of the Osatan body will remain. in