1) inner fold defects
内折缺陷
1.
The influence of over-heat and draw speed on inner fold defects of seamless steel tube is analyzed in hot test process of 20 steel from point of view of inner solidified organization of CC billet.
从连铸坯内部凝固组织的角度出发,分析了20钢在热试过程中,过热度、拉速对无缝管内折缺陷的影响,并提出了改善内部组织的措施,以减少内折废品的产生。
2) break marks
横折缺陷
1.
The break marks is a kind of strip marks that is vertical to rolling direction, occurring at some locations of hot-rolled steel strip during uncoiling.
热轧低碳钢卷开卷后出现横折缺陷是一种常见现象,无论是国内产品还是进口产品都不同程度地出现横折缺陷,给用户带来许多不便和损失。
2.
Based on spike height resulting in break marks,the new technique of eliminating break marks by getting microstructure of quasi-acicular ferrite in hot strip mill was applied.
根据上下屈服点应力差是产生横折的根本原因,采用"控制显微组织形态,降低上下屈服点应力差"来消除热轧带钢横折缺陷。
3) defect deduction
缺陷折减
4) backfin
压折，缺陷
5) enfold-defect
折叠缺陷
1.
The cause of extrusion enfold-defect at the top of piston is analyzed,which is because of the thin remainder.
对活塞顶部挤压折叠缺陷产生的原因进行了分析,发现折叠缺陷是由于余料太薄引起的缩尾性折叠;分别对增厚坯料法、方形坯料法和两步挤压法进行了分析比较,结果表明采用增加坯料厚度的方法来防止折叠不仅增加了材料的浪费,也会增大后续的机加工量,是不经济的;方形坯料虽说可以有效的避免活塞顶部金属对流情况,但是会在活塞环岸内侧产生折叠;而两步挤压法有效的防止了活塞销顶部金属对流的情况,有效的避免了活塞顶表面折叠的产生。
6) cross breaks
横折印缺陷
1.
By analyzing the loading of strip at S rolls and formation mechanism and influencing factors of cross breaks,it was concluded that the main cause of cross breaks is the yield point elongation and the high tensile stress at the entrance of temper rolling mill.
冷轧退火后的带钢在平整过程中产生横折印缺陷,严重影响平整后带钢的表面质量及其力学性能。
2.
By analyzing the technics of cold strip temper rolling and the working principles of temper rolling machine,it finded out the main cause of cross breaks is the yield point elongation and the high tensile stress at the entrance of temper rolling mill.
通过对冷轧板带钢平整工艺及平整机工作原理的了分析,找出了平整时横折缺陷产生的主要原因,通过工业试验,制定合理的伸长率和张力制度,严格来料质量要求,可以避免横折印缺陷的产生,提高平整带钢的表面质量。
补充资料：点缺陷(见晶体缺陷)
点缺陷(见晶体缺陷)
point defect
点缺陷point defeet见晶体缺陷。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条