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1. 发明授权

US4609526A Method for compacting alloy powder 失效
标题翻译：压实合金粉的方法
公开(公告)号：US4609526A
公开(公告)日：1986-09-02
申请号：US609959
申请日：1984-05-14
申请人： Walter T. Haswell , Charles F. Yolton
发明人： Walter T. Haswell , Charles F. Yolton
IPC分类号： B21J5/00 , B21J7/18 , B21K5/00 , B22F3/02 , B22F3/17 , B30B11/00 , B22F1/00
CPC分类号： B30B11/007 , B22F3/172
摘要： A method for producing high speed, tool and die steel articles from prealloyed powders. The method comprises placing particles of a prealloyed steel composition from which the article is to be made in a deformable container, heating the container and particles and then passing the heated container through a forging box having a plurality of hammers evenly spaced around the container and adapted to extend and retract radially to impart a radial forging action to the container. The forging action is of a magnitude and duration to compact the particles to an essentially fully dense article. Preferably, there are four hammers arranged in two pairs with the hammer of each pair being opposed and adapted to extend and retract in unison.
摘要翻译：一种从预合金粉末生产高速，工具和模具钢制品的方法。该方法包括将待制品的预合金钢组合物的颗粒放置在可变形的容器中，加热容器和颗粒，然后将加热的容器通过锻造箱，该锻造箱具有围绕容器均匀间隔的多个锤，以径向延伸和缩回以向容器施加径向锻造动作。锻造动作具有将颗粒压实成基本上完全致密的制品的强度和持续时间。优选地，具有两对布置的四个锤，每对的锤相对并适于一致地延伸和缩回。

2. 发明授权

US4249945A Powder-metallurgy steel article with high vanadium-carbide content 失效
标题翻译：具有高碳化钒含量的粉末冶金钢制品
公开(公告)号：US4249945A
公开(公告)日：1981-02-10
申请号：US944514
申请日：1978-09-20
申请人： Walter T. Haswell , August Kasak
发明人： Walter T. Haswell , August Kasak
IPC分类号： C22C33/02 , C22C38/00 , B22F5/00
CPC分类号： C22C33/0278 , C22C33/0285 , C22C33/0292
摘要： A powder metallurgy tool steel article for use in applications requiring high wear resistance having a carbide content of 10 to 18 volume percent of substantially all MC-type vanadium carbides, which carbides are substantially spherical and uniformly dispersed; the carbon content of the article is balanced relative to the carbide formers vanadium, chromium and molybdenum to provide an amount of carbon in the matrix of the article sufficient to permit the article to be heat treated to a hardness of at least 56 R.sub.c.
摘要翻译：一种粉末冶金工具钢制品，用于需要高耐磨性的应用，其碳化物含量为基本上所有MC型碳化钒的10至18体积％，该碳化物基本上是球形并均匀分散; 制品的碳含量相对于碳化物形成体钒，铬和钼平衡，以在制品的基质中提供足够量的碳以将制品热处理至至少56Rc的硬度。

3. 发明授权

US4276087A Powder-metallurgy vanadium-containing tungsten-type high-speed steel 失效
标题翻译：粉末冶金含钒钨型高速钢
公开(公告)号：US4276087A
公开(公告)日：1981-06-30
申请号：US35652
申请日：1979-05-03
申请人： Walter T. Haswell , William Stasko , F. Robert Dax
发明人： Walter T. Haswell , William Stasko , F. Robert Dax
IPC分类号： C22C38/00 , C21D6/00 , C22C33/02 , C22C38/22 , C22C1/04
CPC分类号： C22C33/0278 , C22C33/0292 , C22C38/22
摘要： A powder-metallurgy produced, vanadium-containing, tungsten-type high-speed steel wherein hardness at elevated temperature is achieved without resorting to conventional, high cobalt contents. This is achieved by providing a critical amount of tungsten and/or molybdenum above that conventionally used in combination with vanadium and carbon in an amount sufficient to combine with the vanadium present and with an excess carbon to provide matrix strengthening. The high hardness and wear resistance at elevated temperature is imparted to the steel by the carbides of vanadium, tungsten and/or molybdenum. Columbium may be substituted for a portion of the vanadium.
摘要翻译：一种粉末冶金生产的含钒的钨型高速钢，其中在高温下的硬度达不到常规的高钴含量。这通过提供临界量的钨和/或钼达到高于常规与钒和碳组合使用的量，其量足以与存在的钒和过量碳结合以提供基体强化。通过钒，钨和/或钼的碳化物将高温下的高硬度和耐磨性赋予钢。铀可以代替一部分钒。

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