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《镰刀和锤子》工厂曾对板材的铬锰硅 钢进行了各种不同热处理方案的研究工作, 以求得最合理的工艺规程。 探讨了三种热处理方案:1）车间里所 采用的热处理是高温退火;2）第二种热处 理是正火及随后的高温回火（1935年规定的 规程）;3）粒状珠光体退火。 板材的退火在工厂的轧板车间进行,用 以重油作工质的箱式炉。钢板成堆地安置在 炉底,并用罩盖上。规定的退火温度的检查 是据气体介质用仪表自动记录温度。为了比 较精确地检查金属的温度,研究时是把热电 偶放在叠垛的不同水平面上。轧板车间有三个正火炉:两个箱式炉板 材是用人工装料和出炉的,一个是炉底可抽 出式加热炉。炉子装备有测量温度的仪器。 高温退火 铬锰硅钢板材的高温退火按
The Sickle and Hammer factory has conducted a variety of different heat treatment programs on chrome manganese silicon steel in order to get the most reasonable process specifications. Three heat treatment options were explored: 1) the heat treatment used in the workshop was a high temperature anneal; 2) the second was a normalizing followed by a tempering (specified in 1935); and 3) pearlite annealing. Annealing of the sheet is carried out in the mill’s rolling shop, a box furnace for the heavy oil to be used as the working fluid. Plates are placed in heaps on the heap and covered with covers. The specified annealing temperature is checked according to the gas medium instrument automatically records the temperature. In order to more accurately examine the temperature of the metal, the study was to place thermocouples on different levels of the stack. There are three positive furnace rolling workshop: two box-type furnace plate is manually charged and baked, one is the furnace bottom out of the furnace. The stove is equipped with a device to measure temperature. High temperature annealing Chromium manganese silicon steel sheet annealing by high temperature