Effect of Tempering Temperature on Microstructure and Hardness of 18Cr2Ni4WA Carburized Steel

Special Steel ›› 2019, Vol. 40 ›› Issue (5): 57-59.

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Effect of Tempering Temperature on Microstructure and Hardness of 18Cr2Ni4WA Carburized Steel

Liu Xiangyan¹, Cui Hong¹, Li Gang¹, Dong Shuquan¹, Yang Jianhua² ,Mu Lifeng³ ， Liu Guijiang⁴

1 Sales Company；
2 Logistics company；
3 Continuous Rolling Plant；
4 Technical Department
Fushun Special Steel Co Ltd, Fushun 113001

Received:2019-04-11 Online:2019-10-01 Published:2022-05-13

回火温度对渗碳钢18Cr2Ni4WA组织和硬度的影响

刘向艳¹，崔鸿¹，李刚¹，董树权¹，杨建华²，穆立峰³，刘桂江⁴

抚顺特殊钢股份有限公司 1销售公司;2物流公司;3连轧厂;4总工办，抚顺113001

作者简介:刘向艳(1985-),女，硕士( 2011年内蒙古工业大学)。工程师,2008年内蒙古工业大学(本科)毕业,材料成型和热处理。

Abstract

Abstract: Abstract In order to meet the user requirement to derease the hardness of 18Cr2Vi4WA steel Φ 60 mm product i. e. HBW hardness value ≤269 ,the tempering test at 630 〜750 °C for 5 h, furnace cooling to 500 °C ,air cooling have been tested by bottom roller annealing furnace and by the help of metalloscope to analyze annealing shape of 18Cr2Ni4WA steel with different temperature. The result show that 18Cr2Ni4WA tempering hardness is connected with temperature, with the increase of annealing temperature, the hardness dacreases first and then increases. When tempering temperature is 670°C ，the HBW average hardness of steel products is the lowest( adout HBW238 ) and the structure is uniform spheroidized pearlite.

Key words: Tempering Temperature, Metallographic Structure, Hardness, 18Cr2Ni4WA Steel ,

摘要： 为满足用户加工HBW硬度值≤269的需要,降低18Cr2Ni4WA钢Φ60 mm材硬度,利用连轧厂实际辊底式退火炉进行了630～750℃5h炉冷至500℃空冷的回火试验,并借助金相显微镜对18Cr2Ni4WA钢不同回火温度下的组织进行了分析,以确定最佳的回火温度。结果表明,18Cr2Ni4WA钢随回火温度的升高硬度先下降后上升,当温度为670℃时,钢材平均HBW硬度值最低(HBW238左右),回火组织为均匀的回火珠光体组织。

关键词: 回火温度, 金相组织, 硬度, 18Cr2Ni4WA钢

Liu Xiangyan, Cui Hong, Li Gang, Dong Shuquan, Yang Jianhua , Mu Lifeng , Liu Guijiang. Effect of Tempering Temperature on Microstructure and Hardness of 18Cr2Ni4WA Carburized Steel[J]. Special Steel, 2019, 40(5): 57-59.

刘向艳, 崔鸿, 李刚, 董树权, 杨建华, 穆立峰, 刘桂江. 回火温度对渗碳钢18Cr2Ni4WA组织和硬度的影响[J]. 特殊钢, 2019, 40(5): 57-59.

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Effect of Tempering Temperature on Microstructure and Hardness of 18Cr2Ni4WA Carburized Steel

回火温度对渗碳钢18Cr2Ni4WA组织和硬度的影响

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