丹阳GCr15首页-句容扬中金坛-轴承钢比较好

首页=丹阳GCr15质量比较好GCr15圆钢/光棒-句容/溧阳/扬中/金坛GCr15轴承钢/GCr15轴承钢热处理变形问题？GCr15 = Danyang home recommend good quality GCr15 steel bar / Jurong / Liyang / Yangzhong / Jintan GCr15 bearing steel /GCr15 bearing steel heat treatment deformation problem- First: the raw material to check, whether the ball is good, whether with the organization, whether there is segregation second: heat treatment deformation is not necessarily caused by the cold speed too fast. If the cooling rate is not enough, the deformation may be faster than the cooling rate is too large, do not find out what the reason to stop the oil pool stirring what. Check the quenching hardness of the workpiece, if the workpiece hardness is very high, very uniform, that is, the cooling rate is too fast, it is necessary to reduce the pool temperature, stop the oil tank mixing. In that case of the hardness, as far as possible to reduce the cooling rate; if the quenching hardness insufficient, uneven deformation that is caused by a lack of cooling rate, it would need to increase the cooling rate, increasing the stirring speed, the increase of quenching oil temperature, to increase the cooling speed of quench oil!。第一：原材料要检查好，是否球化好，是否有带装组织，是否有偏析情况。第二：热处理变形不一定都是冷速过快造成的。如果冷速不够，变形有可能比冷速过快还要大，不要没查清原因就停止油池搅拌什么的。检查工件的淬火硬度，如果工件硬度很高，很均匀，那就是冷速过快了，那就需要降低油池温度，停止油池搅拌。在保证硬度的情况下，尽可能的减少冷速；如果淬火硬度不足，不均匀，那就是冷速不足造成的变形，那就需要增加冷速了，加大搅拌速度，增加淬火油温度，改用快速淬火油等增加冷速！ 

トップページ推薦＝涟水GCr15品質がいい铜山GCr15丸鋼/ひかり棒-浦口/六合/溧水/高淳/江宁GCr15軸受鋼/ 常州GCr15軸受鋼熱処理変形問題？第一：原材料でチェックしていいかどうか、ボール化はいいかどうか、気概を持って組織があるかどうか偏析場合第二：熱処理変形が必ずしもは寒い速速すぎてによる。寒ければ速度が足りない、変形よりも寒い速速すぎないでもない、原因が分かり停止油プール攪拌なんて。検査ワーク焼入れ硬度、もしワーク硬度が高い、平均して、それは寒い速速すぎて、プール温度が低下油、油プールを攪拌。保証硬度情況下で、なるべく減少寒い速；もし焼入れ硬度が不足し、平均しないで、それは寒い速不足変形が増え、寒い速、攪拌速度を増加焼入れ油温度、最近増加急速焼入れ油など寒い速！