• CN: 11-2187/TH
  • ISSN: 0577-6686

›› 1991, Vol. 27 ›› Issue (5): 13-17.

• Article • Previous Articles     Next Articles

ON THE LEAST RATIO OF FORGING REDUCTION FOR CLOSING THE INTERNAL DEFECT OF INGOTS

Yang Yusheng;Tao Yongfa;Wang Xin;Su Fuzeng   

  1. Qinhuangdao Yanshan University The First Heavy Machinery Building Plant
  • Published:1991-09-01

Abstract: Starting from the trend of development of the heavy forgings, control of qualities and saving of energy resources, this paper has taken the least ratio of forging reduction as a comprehensive criterion for laying down the technological process for heavy forgings, experimentally determined the least ratio for the FM method of drawing and introduced a concrete instance of forging heavy backing rolls, by which two rolls have been forged successfully from ingots weighing 100 tons with ratio of reduction just being 2.25 and thus a great deal of energy saved.

Key words: 大锻件, 静压力, 缺陷, New instrument, New method, Review, Non-destructive testing