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一等奖(五篇) 中小口径高强度弹体用冷挤压钢的研究——张树才 本文利用反挤杯形件研究了15MnVB、20MnVB、20Mn2和20CrMnSi等低合金钢的冷挤压特征,以及合金元素对冷挤压强化效果的影响。为了开发高强度弹体的生产,充分发挥材料的潜力,研究了冷挤压成型、热处理强化等组成的新工艺。如果采用新工艺生产,低碳S20A钢可获得弹体极限强度≥882MPa。由于低碳钢价格便宜,经济效果
First Prize (five articles) Study on Cold Extruded Steels for Medium and Small Caliber High Strength Bodies - Zhang Shucai In this paper, the characteristics of cold extrusions for 15MnVB, 20MnVB, 20Mn2 and 20CrMnSi low alloy steels were studied by using anti-extrusion cups. Effect of Alloying Elements on Cold Extrusion Strengthening. In order to develop high-strength projectile production, give full play to the potential of the material, the study of cold extrusion, heat treatment and other components of the new technology. If the new process is used, the low carbon S20A steel can obtain the ultimate strength of the projectile ≥882MPa. As low-carbon steel cheaper, economic effect