Wear resistant sintered alloy

Abstract

Abstract PURPOSE:To obtain a sintered alloy with superior wear resistance by spraying an alloy prepared by adding specified amounts of Cr, Mo and/or W, V and/or Nb, Co, O, and Si and/or Mn to Fe to manufacture powder, mixing the powder with a specified amount of graphite, and molding and sintering the mixture. CONSTITUTION:An alloy consisting of, by weight, 3-10% Cr, 3-20% Mo and/ or W, 0.5-10% V and/or Nb, <15.0% Co, <0.5% O, 0.5-3% Si and/or 0.1-3% Mn, <2% impurities and the balance Fe is prepared. The alloy is melted and sprayed to manufacture alloy powder, and the powder is mixed with 0.8-2wt% graphite powder. The powdered mixture is compacted and sintered to obtain a sintered alloy having >=90% density ratio and >=500Hv apparent hardness and contg. 5-20% by area of fine carbide particles having <=15mum diameter dispersed uniformly in the matrix.

Inventors

• 👤 Tetsuya Suganuma
• 👤 菅沼　徹哉
• 👤 Shuichi Fujita
• 👤 藤田　秋一
• 👤 Kunizo Imanishi
• 👤 今西　國三
• 👤 Sadataka Obuchi
• 👤 大「淵」　貞孝

Bibliographic Details