クロム白鋳鉄の耐サンド・エロージョン特性

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書誌事項

タイトル別名
  • Sand Erosion Resistance of Chromium White Cast Irons
  • クロム ハクチュウテツ ノ タイ サンド エロージョン トクセイ

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抄録

  As-cast and heat treated Cr cast irons containing C 1.7 to 3.8% and Cr 3 to 26% were prepared in which such additives as V 5 to 8%, Ni 4 to 6%, Mo 1 to 2% and Ti 0.2% had been introduced. Sand erosion tests were carried out under corrosive wear condition with flattery silica sand of 90 mesh 40 vol.% and water 60 vol.%. Wear of the cast irons proceeds from interphase corrosion between matrix and carbides and is followed by abrasive and corrosive wear of matrix. Weight loss of the cast irons decreases with an increase in Cr content in the matrix. The sand erosion resistance of lower Cr irons is improved by quench and temper hardening. V, Ni, Mo and Ti in the irons improve the wear resistance 1.69%C-12.2%Cr-4.77%V-0.92%Mo-0.2%Ti and 2.29%C-12.4%Cr-8.46%V-1.00%Mo-0.2%Ti cast irons containing granular eutectic vanadium carbides and fine granular secondary carbides are particularly superior in terms of sand erosion resistance even under more corrosive wear condition with flattery silica sand 40 vol.% plus water 54 vol.% and sea water 6 vol.%.

収録刊行物

  • 鋳物

    鋳物 56 (10), 597-603, 1984

    公益社団法人 日本鋳造工学会

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