| 摘要 |
PCT No. PCT/CA92/00388 Sec. 371 Date Jan. 14, 1994 Sec. 102(e) Date Jan. 14, 1994 PCT Filed Sep. 9, 1992 PCT Pub. No. WO94/05822 PCT Pub. Date Mar. 17, 1994.A process of forming a sintered article of powder metal comprising: selecting elemental iron powder; determining the desired properties of said sintered article and selecting, a quantity of carbon, and ferro alloy from the group of ferro manganese, ferro chromium, ferro molybdenum, ferro vanadium, ferro silicon and ferro boron; grinding said ferro alloy to a mean particle size of approximately 8 to 12 microns; introducing a lubricant while blending the carbon, ferro alloy, with said elemental iron powder; pressing the mixture to form the article; and then high temperature sintering the article at a temperature between 1,250 DEG C. and 1,350 DEG C. in a neutral or reducing atmosphere; so as to produce the sintered article of powdered metal; and includes the product formed thereby. |
