退火酸洗304不锈钢产品冷变形硬度问题改善分析  

Improvement Analysis of Cold Deformation Hardness Problem in Annealed and Pickled 304 Stainless Steel Products

作　　者：石斌龙 Shi Binlong(Jiangsu Delong Nickel Industry Co.,Ltd.,Xiangshui Jiangsu 224631,China)

机构地区：[1]江苏德龙镍业有限公司,江苏响水224631

出　　处：《山西冶金》2024年第10期32-34,共3页Shanxi Metallurgy

摘　　要：针对退火酸洗304不锈钢冷变形硬度异常偏高问题,从破磷矫直张力方面分析其原因,并进行试验检测。结果表明,部分304不锈钢硬度达标但超出内控要求,硬度(HRB)超过89和90的发生率不稳定,经过综合分析,认为是因冷变形所致。为提高304不锈钢产品质量,研究破磷矫直机张力与各项指标的关系,提出张力改进策略,将张力系数控制在5以内,在此条件下生产304不锈钢产品,产品硬度(HRB)稳定性达到98.7%,产品质量改善效果良好。此研究为304不锈钢产品硬度控制提供技术指导,规避产品硬度异常现象。In response to the problem of abnormally high hardness during cold deformation of annealed and pickled 304 stainless steel,this article analyzes the reasons from the perspective of phosphorus breaking and straightening tension,and conducts experimental testing.The results indicate that some 304 stainless steel hardness meet the standards but exceed the internal control requirements,and the occurrence rate of hardness(HRB)exceeding 89 and 90 is unstable.After comprehensive analysis,it is believed to be caused by cold deformation.In order to improve the quality of 304 stainless steel products,the relationship between the tension of the phosphorus breaking straightening machine and various indicators was studied,and a tension improvement strategy was proposed to control the tension coefficient within 5.Under these conditions,304 stainless steel products were produced,and the product hardness(HRB)stability reached 98.7%,indicating a good improvement effect on product quality.This study provides technical guidance for hardness control of 304 stainless steel products and avoids abnormal hardness phenomena.

关 键 词：304不锈钢 退火酸洗 硬度 冷变形 工艺优化 

分 类 号：TG337.5[金属学及工艺—金属压力加工]