Abstract: The Φ2.51mm cold-drawn rod of ferrite stainless steel 0Cr13 (/%: 0.03C, 0.43Si, 0.65Mn, ≤0.030P, ≤0.030S, 12.80Cr) is cold-drawn from Φ5.50mm hot-rolled coil annealed at 860°C for 2h 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 20MPa 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 Φ2.51mm products of steel 0Cr13.

摘要： Φ5.50mm0Cr13铁素体不锈钢(/%:0.03C,0.43Si,0.65Mn,≤0.030P,≤0.030S,12.80Cr)热轧盘条860℃2h退火,并经5和7道次冷拔至Φ2.51mm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20MPa;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Φ2.51mm0Cr13钢材的生产。

关键词: 0Cr13铁素体不锈钢, 冷拔工艺, 组织, 性能