ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2013, Vol. 34 ›› Issue (2): 32-34.

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Pilot Commercial Production of Free Cutting Steel SY12SnS Bearing Tin

Zhang Haoping1 , Lin Tengchang2 , Liu Yazheng3   

  1. 1 Suzhou Iron and Steel Group Ltd Co, Suzhou 215151;
    2 School of Metallurgical and Ecological Engineering,3 School of Materials Science and Engineering, University of Science and Technology, Beijing 100083;
  • Received:2012-10-13 Online:2013-04-01 Published:2022-10-08

含锡易切削钢SY12SnS的工业试生产

张灝平1, 林腾昌2, 刘雅政3   

  1. 1苏钢集团有限公司，苏州 215151；
    北京科技大学2冶金与生态工程学院;3材料科学与工程学院，北京 100083
  • 作者简介:张灏平(1957-)，男，高级工程师，1982年北京钢铁学院毕业,新产品开发与钢材产品质量控制与改进。

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Abstract: The process flow sheet for pilot commercial production of free cutting steel SY12SnS (/% : 0.08-0.16C, ≤0.15Si, 1.00-l.30Mn, 0.03-0.07P, 0.15-0.25S, 0.12-0.18Sn) is 100 t DC EAF-LF-195 mm x 195 mm CC- CR (finished product-Φ8 mm). Results show that total amount of large scale inclusions in casting billet of free cutting steel SY12SnS is 4.72 mg/10 kg, HB hardness value o£ rolled products is 134-141, and the tensile strength, elongation and reduction of area of steel are respectively 490-503 MPa, 21.8%-25.0% and 55.4%-56.1% , and the steel has nice turning performance.

摘要： 工业试生产的含锡易切削钢SY12SnS(/%:0.08～0.16C、≤0.15Si、1.00～1.30Mn、0.03～0.07P、0.15～0.25S、0.12～0.18Sn)的工艺流程为100 t直流电弧炉-LF-195 mm×195 mm连铸-连轧(成品Φ8 mm)。结果表明,含锡易切削钢SY12SnS铸坯中大型夹杂物总量为4.72 mg/10 kg,轧材HB硬度值134～141,抗拉强度490～503 MPa,伸长率21.8%～25.0%,断面收缩率55.4%～56.1%,具有良好的切削性能。

关键词: 易切削钢SY12SnS, 100 t DC EAF-LF-CC-连轧工艺, 夹杂物, 切削性能

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