冷拔工艺对0Cr13铁素体不锈钢Φ2.51mm冷拔材组织和性能的影响
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摘要
Φ5.50 mm 0Cr13铁素体不锈钢(/%:0.03C,0.43Si,0.65Mn,≤0.030P,≤0.030S,12.80Cr)热轧盘条860℃2 h退火,并经5和7道次冷拔至Φ2.51 mm材。试验研究了冷拔变形量、减面率分配,冷拔道次数量等因素对钢的组织和性能的影响。结果表明,当总减面率大于61.3%时钢中出现明显纤维状组织;在冷拔过程钢的抗拉强度随减面率增加呈现快速-缓慢-快速增加3个阶段;头两道次冷拔,均匀分配减面率时钢的加工硬化严重;总减面率79.2%,5道次冷拔钢丝比7道次拉拔的钢丝抗拉强度高20 MPa;头两道次合适的减面率为第1道次35.1%,第2道次10.5%;从具体生产条件综合考虑,5道次比7道次更适合Φ2.51 mm 0Cr13钢材的生产。
The Φ2.51 mm cold-drawn rod of ferrite stainless steel 0Crl3(/%:0.03 C,0.43 Si,0.65 Mn,≤0.030 P,≤0.030 S,12.80Cr) is cold-drawn from 05.50 mm hot-rolled coil annealed at 860 ℃ for 2 h by 5 and 7 passes.The effect of cold-drawing deformation,distribution of draught and cold-drawing passes on structure and properties of the steel is tested and studied.Results show that as total draught is more than 61.3%,the obvious fibrous structure occurs in steel;during cold-drawing process with increasing the draught,the of tensile strength of steel increases in three-stages,i.e.fast,slow and fast increasing;in first and second drawing passes,with equal draught the work-hardening of steel is more serious;with total draught 79.2%,the tensile strength of steel rod cold-drawn with 5 passes is high by 20 MPa than that with 7 passes;the suitable draught for beginning two passes is that first pass 35.1%and second pass 10.5%;comprehensive considering from specific production condition,as compare 7 passes process the 5 passes process is more suitable to produce the Φ2.51 mm products of steel 0Cr13.
The Φ2.51 mm cold-drawn rod of ferrite stainless steel 0Crl3(/%:0.03 C,0.43 Si,0.65 Mn,≤0.030 P,≤0.030 S,12.80Cr) is cold-drawn from 05.50 mm hot-rolled coil annealed at 860 ℃ for 2 h by 5 and 7 passes.The effect of cold-drawing deformation,distribution of draught and cold-drawing passes on structure and properties of the steel is tested and studied.Results show that as total draught is more than 61.3%,the obvious fibrous structure occurs in steel;during cold-drawing process with increasing the draught,the of tensile strength of steel increases in three-stages,i.e.fast,slow and fast increasing;in first and second drawing passes,with equal draught the work-hardening of steel is more serious;with total draught 79.2%,the tensile strength of steel rod cold-drawn with 5 passes is high by 20 MPa than that with 7 passes;the suitable draught for beginning two passes is that first pass 35.1%and second pass 10.5%;comprehensive considering from specific production condition,as compare 7 passes process the 5 passes process is more suitable to produce the Φ2.51 mm products of steel 0Cr13.
引文
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[6]袁珍友,刘丽,赵元聪,等.AZ31镁合金细丝拉拔工艺的研究[J].四川有色金属,2013,2:42-44.
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