发明名称 CHROMIUM-ALLOYED FERRITIC STEEL AT HIGH RESISTANCE TO BUCKLES, SHEET MADE FROM SUCH STEEL AND METHOD OF MAKING SUCH STEEL
摘要 FIELD: metallurgy; production of stainless ferritic steel suitable for stamping at high degree of deformation and resistant to buckles. SUBSTANCE: chromium-alloyed steel is teemed at continuous casting in form of strip or slab obtaining equiaxial fine-grain structure practically containing no columnar grains. Composition of steel is as follows, mass- %: carbon, no more than 0.08; chromium, no less than 8; manganese, no more than 1.5; aluminum, lesser than 0.030; nitrogen, no more than 0.05; silicon, no more than 1.5; nickel, lesser than 2.0; the remainder being iron and admixtures. It is preferable that content of titanium is no less than 1.10% at satisfying the following relationship: (Ti.N)/Al>=0,14 and (Ti/48)/[(C/12)+(N/14)]>1,5. EFFECT: high quality of sheet practically free from buckles and possessing high moldability; avoidance of intermediate annealing before reduction in cold state. 19 cl, 14 dwg, 8 tbl
申请公布号 RU2227172(C2) 申请公布日期 2004.04.20
申请号 RU19980123163 申请日期 1998.12.21
申请人 发明人 JOSHITAKE EHJZO;MAKKEJDZHEH ALAN R.
分类号 C21D9/46;C21D8/02;C21D9/00;C22C38/00;C22C38/18;C22C38/40;C22C38/50 主分类号 C21D9/46
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