首页>
外国专利>
METHOD FOR MANUFACTURING SCALEBREAKER ROLL
METHOD FOR MANUFACTURING SCALEBREAKER ROLL
展开▼
机译：制造破鳞机辊的方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
The scale breaker roll manufacturing method for improving the strength and wear resistance of the scale breaker roll by improving the composition and heat treatment conditions is introduced. Such scale breaker roll manufacturing method is carbon (C): 0.38 to 0.43% by weight, chromium (Cr): 0.90 to 1.2% by weight, silicon (Si): 0.15 to 0.35% by weight, manganese (Mn): 0.60 to 0.85% by weight , Molybdenum (Mo): 0.15 to 0.30% by weight, phosphorus (P): 0.001 to 0.025% by weight, sulfur (S): 0.001 to 0.025% by weight and scale breaker having a composition containing residual iron (Fe) and other unavoidable impurities A first carburizing step S10 for the roll, a second carburizing step S20 for heating the scale breaker roll to 900 to 950 ° C. under a predetermined carbon concentration after the first carburizing step S10, and the second After the carburizing step (S20), a third carburizing step (S30) for heating the scale breaker roll to 800 ~ 830 ℃ under a certain carbon concentration, and after the third carburizing step (S30), the scale breaker roll outside the heat treatment furnace Repeating the carburization process including the cooling air cooling step (S40), and after the carburization process, reheating step (S50), Quenching step (S60), tempering step (S70), medium frequency quenching step (S80), low temperature tempering step (S90), deep cooling treatment step (S100), and re-tempering step (S110) It is done.
展开▼
