Corrosion resistant, high vanadium, powder metallurgy tool steel articles with improved metal to metal wear resistance
원문보기
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0124708
(1998-07-29)
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발명자
/ 주소 |
- Pinnow Kenneth E.
- Stasko William
- Hauser John
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출원인 / 주소 |
- Crucible Materials Corporation
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대리인 / 주소 |
Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
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인용정보 |
피인용 횟수 :
3 인용 특허 :
8 |
초록
▼
A high vanadium, powder metallurgy cold work tool steel article and method for production. The nickel, chromium, vanadium, and carbon plus nitrogen contents of the steel are controlled during production to achieve a desired combination of corrosion resistance, metal to metal wear resistance, and har
A high vanadium, powder metallurgy cold work tool steel article and method for production. The nickel, chromium, vanadium, and carbon plus nitrogen contents of the steel are controlled during production to achieve a desired combination of corrosion resistance, metal to metal wear resistance, and hardenability.
대표청구항
▼
[ What is claimed is:] [1.] A fully dense, corrosion resistant, high vanadium, powder metallurgy cold work tool steel article with high metal to metal wear resistance made from nitrogen atomized prealloyed powders, consisting essentially of, in weight percent, 1.47 to 3.77 carbon, 0.2 to 2.0 mangane
[ What is claimed is:] [1.] A fully dense, corrosion resistant, high vanadium, powder metallurgy cold work tool steel article with high metal to metal wear resistance made from nitrogen atomized prealloyed powders, consisting essentially of, in weight percent, 1.47 to 3.77 carbon, 0.2 to 2.0 manganese, up to 0.10 phosphorus, up to 0.10 sulfur, up to 2.0 silicon, 0.3 to 1.80 nickel, 11.5 to 14.5 chromium, up to 3.00 molybdenum, 8.0 to 15.0 vanadium, 0.03 to 0.46 nitrogen, and balance iron and incidental impurities; wherein carbon and nitrogen are balanced according to the formulas: EQU (%C+6/7%N).sub.minimum =0.40+0.099(%Cr-11.0)+0.063(%Mo)+0.177(%V); EQU (%C+6/7%N).sub.maximum =0.60+0.099(%Cr-11.0)+0.063(%Mo)+0.177(%V); d articles when hardened and tempered to a hardness of at least 58HRC having a volume fraction of primary M.sub.7 C.sub.3 and MC carbides between 16 and 36% in which the volume of MC carbide is at least one third of the total primary carbide volume and where the maximum sizes of the primary carbides do not exceed about six microns in their largest dimension, and wherein, as defined herein, a metal to metal wear resistance of at least 10.times.10.sup.10 psi is achieved.
이 특허에 인용된 특허 (8)
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Roberts William (LidingSEX) Johansson Brje (Hagfors SEX), Cold work steel.
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Yukawa ; Toru ; Kawai ; Nobuyasu ; Honma ; Katuhiko ; Fujimoto ; Hirofum i ; Takigawa ; Hiroshi ; Hirono ; Minoru ; Ishii ; Masaru ; Tatsuno ; Tsu neo, Nitrogen containing high speed steel obtained by powder metallurgical process.
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Kawai Nobuyasu (Kobe JPX) Honma Katuhiko (Kobe JPX) Fujimoto Hirofumi (Ono JPX) Takigawa Hiroshi (Kobe JPX) Tatsuno Tsuneo (Akashi JPX), Nitrogen containing powder metallurgical tool steel.
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Haswell Walter T. (Jamesville NY) Kasak August (Pittsburgh PA), Powder-metallurgy steel article with high vanadium-carbide content.
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Stasko William (West Homestead PA) Pinnow Kenneth E. (Pittsburgh PA), Prealloyed high-vanadium, cold work tool steel particles and methods for producing the same.
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Stasko William (West Homestead PA) Pinnow Kenneth E. (Pittsburgh PA), Sulfur-containing powder-metallurgy tool steel article.
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Roberts William (Hagfors SEX) Johansson Brje (Hagfors SEX), Tool steel.
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Hauser John J. (Freedom PA) Stasko William (West Homestead PA) Pinnow Kenneth E. (Pittsburgh PA), Wear and corrosion resistant articles made from pm alloyed irons.
이 특허를 인용한 특허 (3)
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Wert, David E.; Armstrong, Timothy R.; Helmick, David A.; Schmidt, Michael L., Method of manufacturing a ferrous alloy article using powder metallurgy processing.
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Theisen, Werner; Packeisen, Andreas; Berns, Hans, Powder-metallurgically produced, wear-resistant material.
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Sandberg, Odd; Jönson, Lennart, Process for producing steel article.
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