Flexibly rolled double metal bend, method for producing same, device for rolling internal wall thereof

Flexibly rolled double metal bend, method for producing same, device for rolling internal wall thereof

  • CN 1,184,722 A
  • Filed: 12/24/1997
  • Published: 06/17/1998
  • Est. Priority Date: 12/24/1997
  • Status: Abandoned Application
First Claim
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1. , a kind of flexible roll extrusion bimetallic elbow, compare with other bimetallic elbows, it is characterized in that, inner metal layer is through pressure stability and adjustable continuous and local roll extrusion, be in compression and even work-hardened condition, its thickness can select very thinly (generally more than 0.25mm to 3mm), does not have the compound longitudinal seam of bimetallic on large caliber bend.The combination of inside and outside metal level is not influenced by outer elbow inwall size form and position tolerance, reaches the close interference combination or the metallurgical binding of each local uniform unanimity under certain coarse state, uses under hot state and the inner metal layer unstability can not take place.

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