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 qb2. 51 mm cold-drawn rod of ferrite stainless steel 0Crl3 （/% ： 0. 03C, 0. 43Si, 0. 65Mn, ≤ 0. 030P, ≤0. 030S, 12. 80Cr） is cold-drawn from φ5.50 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 % ; comprehen- sive considering from specific production condition, as compare 7 passes process the 5 passes process is more suitable to nroduce the φ2.51 mm products of steel 0Crl3.
出处
《特殊钢》
北大核心
2017年第3期47-49,共3页
Special Steel
关键词
OCr13铁素体
不锈钢
冷拔工艺
组织性能
Ferrite Stainless Steel OCrl3, Cold-Drawn Process, Structure, Properties
