Title: Method for processing arbitrary taper seamless stainless steel pipe
Application Number: 200610122981 Application Date: 2006.10.24
Publication Number: 1943896 Publication Date: 2007.04.11
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B21C37/18;B21D11/20;B23P9/02;F16C19/22;F16C33/30
Applicant(s) Name: Zhou Shan Address:
Inventor(s) Name: Zhou Shan
Attorney & Agent: zhanghai wen
Abstract:
    The process of producing seamless stainless steel pipe in different tapers includes the following steps: 1. calculating material size based on the pipe diameters and taper and cutting stainless steel plate; 2. winding the cut sector stainless steel plate on the three-core mold; 3. setting the wound steel plate in a composite mold and applying forces on two edges for healing up; 4. welding the two edges integrally; 5. flattening the basically conic stainless steel pipe on the three-core mold; 6. setting the conic stainless steel pipe on the rolling mold, rolling through high speed rotation, and fine rolling; and 7. cutting ends and deburring. Thus produced conic stainless steel pipe has surface roughness up to 1.6.
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