| GCr15轴承钢线材冷拔工艺优化的实践 |
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| 引用本文： | 王莹莹,杨鹏远.GCr15轴承钢线材冷拔工艺优化的实践[J].特殊钢,2015,36(6):16-19. |
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| 作者姓名： | 王莹莹 杨鹏远 |
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| 作者单位： | 东北特钢集团大连特殊钢有限责任公司，大连116105 |
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| 摘 要： | 分析了GCr15轴承钢(1.01%C,1.58%Cr)Φ11 mm线材的减面率、拉拔模角度和定径带长度,拉拔速率对拉拔应力和拉拔表面精度的影响。得出Φ11 mm盘条冷拉至Φ10.2 mm线材的优化工艺,即Φ11 mm线材(HB193)-等温球化退火(785℃4.5 h→750℃3 h)-冷拔至中10.4 mm盘条-740℃4.5 h去应力退火-冷拔至Φ10.2 mm棒材成品(HB205);冷拔速度35 m/min,油性润滑等工艺措施可获良好的表面质量。
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| 关 键 词： | GCr15轴承钢线材 联合拉拔机 冷拔 减面率 模具 应力 等温球化退火 润滑 |
| 收稿时间： | 2015-06-02 |
Practice of Cold Drawing Process Optimization of GCr15
Bearing Steel Rod |
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| Wang Yingying,Yang Pengyuan.Practice of Cold Drawing Process Optimization of GCr15
Bearing Steel Rod[J].Special Steel,2015,36(6):16-19. |
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| Authors: | Wang Yingying Yang Pengyuan |
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| Affiliation: | Dalian Special Steel Co Ltd, Dongbei Special Steel Group, Dalian 116105 |
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| Abstract: | The effect of draft, cone angle and length of sizing belt of drawing die, and drawing speed on drawing stress and drawing surface accuracy of bearing steel GCr15 (1. 01% C, 1. 58% Cr) Φ11 mm rod coil has been analyzed. The optimization process for Φ11 mm rod coil cold drawing to Φ10. 2 mm rod is obtained, i. e. Φ11 mm rod coil (HB193)- isothermal spheroidizing annealing (at 785℃ for 4. 5 h → at 750 °C for 3 h) - cold drawing to 10. 4 mm rodde-stress annealing at 740 ℃ for 4. 5 h- cold drawing to Φ10. 2 mm rod products (HB205) ； the nice surface quality is obtained by using the process measures including with cold speed 35 m/min and drawing oil lubricant. |
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