【摘要】 总结的两次镦拔锻造新工艺具有可靠性高,锻透效果好,可控制钢中夹杂物的形态和对坯料内部缺陷进行修复的独特作用,是一种新颖的大锻件锻造工艺。特别是明确了两次镦拔新工艺中砧宽比W/H和料宽比B/H的控制、每趟压下率△H/H的安排原则等,是对WHF法锻造的重要补充。更多还原

【Abstract】 Two-time upsetting and stretching is a new kind of technology for large forgings,which has high reliability and good forging penetration effect,can control the shape of impurity and renovate the inner forging defects.In the two-time upsetting and stretching technology,the choice of anvil ratio W/H of wide and high,blank ratio B/H of wide and high,forging ratio △H/H every time is an important supplement of WHF forging method.更多还原