Title: Wedge cross-rolling two cycle roll-forming method for train shaft blank
Application Number: 200610144115 Application Date: 2006.11.27
Publication Number: 1947884 Publication Date: 2007.04.18
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B21H1/22;B21B1/08;B21B27/02;B21B37/74
Applicant(s) Name: Beijing Science Address:
Inventor(s) Name: Wang Baoyu;Hu Zhenghuan;Zhang Kangsheng;Shu Xuedao
Attorney & Agent: liuru e
Abstract:
    A technology for forming the axle bank of train by using wedge dies to roll it by two-turns includes such steps as heating a circular blank to 1000-1200 deg.C, feeding it between two die sets with at least one pair of internal wedges and one pair of external wedges, rotating the die sets by one turn while rolling it by internal wedges, and rotating the die sets by another turn while rolling it by external wedges.
Time: 18
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