Method for manufacturing the hollow bloom of Seamless Steel

Method for manufacturing the hollow bloom of Seamless Steel

  • CN 101,198,419 B
  • Filed: 06/15/2006
  • Issued: 08/13/2019
  • Est. Priority Date: 06/16/2005
  • Status: Active Grant
First Claim
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1. a kind of for passing through double-roller type oblique milling in the case where guiding mechanism closed using the pass being located in another planeThe plug with a perforated portion and at least one finishing parts that punch is maintained between cross roll via one manufactures nothingThe method for stitching hollow bloom, the hollow bloom is made of the solid round block of steel and diameter is less than solid round block diameter95%, wherein the roller is relatively adjusted and plug in the spacing of most narrow cross-section and the diameter of used round blockPosition is adjusted relative to the most narrow cross section of roller, which is characterized in that the solid round block of feeding the tip of the plug itOne ultimate deformation X relevant to the feeding angle of the deformability of used steel, set feed angle and roller of preceding holding, andPass through following equation:

  • Roller spacing=hollow bloom diameter -0.075 ×

    round block diameterGuiding mechanism spacing=hollow bloom diameter+0.075 ×

    round block diameterRoller spacing and guiding mechanism spacing are acquired less than 3% with the deviation of hollow bloom diameter, wherein the ultimate deformation X is determinedJustice is (roller spacing/round block diameter of the 1- in plug tip location) ×

    100%.

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