Thick steel plate of at least 50mm in thickness with superior long brittle fracture propagation stopping properties, manufacturing method for same, and method for evaluating long brittle fracture propagation stopping performance and test apparatus for same

Thick steel plate of at least 50mm in thickness with superior long brittle fracture propagation stopping properties, manufacturing method for same, and method for evaluating long brittle fracture propagation stopping performance and test apparatus for same

  • CN 103,348,030 A
  • Filed: 02/07/2012
  • Published: 10/09/2013
  • Est. Priority Date: 02/08/2011
  • Status: Active Application
First Claim
Patent Images

1. a thickness of slab (t) is the above Plate Steel of 50mm, wherein, long brittle-cracking propagation in thickness of slab direction cross section stops in the front end shape of portion, at the width of thickness of slab central part be thickness of slab (t) 20% zone stop the length that chaps, with respect to begin from surface of steel plate to become thickness of slab (t) 1/4~

  • 1/10 or become the maximum be full of cracks length in 3/4~

    9/10 zone of thickness of slab (t), on the working direction of described long brittle crack, at least with the contraction in length of thickness of slab (t), and form recessed depressed part.

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