采用控制轧制工艺时,为了防止原始奥氏体晶粒过分长大,一般采用较低的加热温度和开轧温度。由于开轧温度高,变形后的奥氏体晶粒会发生再结晶而细化,如在这个阶段停止变第八节控制轧制技术形,轧件即随温度下降而产生相变。
In order to prevent the original austenite grain growing too much, the lower heating temperature and rolling temperature are generally adopted in the rolling process. Due to the high rolling temperature, the austenite grain after the deformation will be recrystallized and refined. For example, the eighth section rolling technology is stopped at this stage, and the phase change is produced as the temperature drops.
轧钢方法按轧制温度的不同可分为冷轧与热轧;按轧制是轧件与轧辊的相对运动关系不同可分为纵轧,横轧和斜轧;按轧制产品的成型特点还可分为一般轧制,和特殊轧制。此外,由于轧制产品种类繁多,规格不一。
Rolling method can be divided into cold rolling and hot rolling according to the rolling temperature. According to rolling, the relative motion relatihip between rolling piece and roller can be divided into longitudinal rolling,轧钢设备采购, cross rolling and cross rolling. According to the forming characteristics of rolling products, it can also be divided into general rolling and special rolling. In addition,轧钢设备型号, there are many kinds of rolling products and different specificati.
棒材穿水冷却装置的基本原理是什么?
在精轧机后设有一个由数个水冷箱组成的可调水冷段,轧钢设备,对棒材进行急剧冷却,使棒材表面形成马氏体***,在随后的温度***过程中,芯部热量散出对表面马氏体***可产生回火作用,结果棒材表面层为回火马氏体,芯部为细粒珠光体及索氏体***。这种***结构使棒材屈服极限和韧性提高,并具有良好的可焊性。
What is the basic principle of the bar water cooling device?
After the finishing mill,轧钢设备谁家好, there is an adjustable water cooling section of several water cooling boxes. The rod material is cooled sharply to form martensite structure. During the subsequent temperature recovery process, the heat of the core can produce tempering on the surface martensite, and the surface layer of the rod is tempered martensite, the core is fine pearlite and Soxhlet body. This structure improves the yield limit and toughness of bars, and has good solderability.
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