EP0648851A1 - Artikel aus Schwefel enthaltenden Werkzeugstahlpulver und Verfahren zu seiner Herstellung - Google Patents

Artikel aus Schwefel enthaltenden Werkzeugstahlpulver und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0648851A1
EP0648851A1 EP94306632A EP94306632A EP0648851A1 EP 0648851 A1 EP0648851 A1 EP 0648851A1 EP 94306632 A EP94306632 A EP 94306632A EP 94306632 A EP94306632 A EP 94306632A EP 0648851 A1 EP0648851 A1 EP 0648851A1
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Prior art keywords
article
tool steel
sulfur
powder metallurgy
nitrogen
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EP94306632A
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English (en)
French (fr)
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EP0648851B1 (de
Inventor
William Stasko
Kenneth E. Pinnow
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Crucible Materials Corp
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Crucible Materials Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/00178—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices for active exercising, the apparatus being also usable for passive exercising
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/00181—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices comprising additional means assisting the user to overcome part of the resisting force, i.e. assisted-active exercising
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/40—Interfaces with the user related to strength training; Details thereof
    • A63B21/4041—Interfaces with the user related to strength training; Details thereof characterised by the movements of the interface
    • A63B21/4047—Pivoting movement
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0002—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms
    • A63B22/001—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms by simultaneously exercising arms and legs, e.g. diagonally in anti-phase
    • A63B22/0012—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements involving an exercising of arms by simultaneously exercising arms and legs, e.g. diagonally in anti-phase the exercises for arms and legs being functionally independent
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/20—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising
    • A63B22/201—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track
    • A63B22/203—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track in a horizontal plane
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00—Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
    • A63B23/0405—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs involving a bending of the knee and hip joints simultaneously
    • A63B23/0417—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs involving a bending of the knee and hip joints simultaneously with guided foot supports moving parallel to the body-symmetrical-plane by translation
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/20—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising
    • A63B22/201—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track
    • A63B2022/206—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements using rollers, wheels, castors or the like, e.g. gliding means, to be moved over the floor or other surface, e.g. guide tracks, during exercising for moving a support element in reciprocating translation, i.e. for sliding back and forth on a guide track on a curved path
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
    • A63B71/02—Games or sports accessories not covered in groups A63B1/00 - A63B69/00 for large-room or outdoor sporting games
    • A63B71/023—Supports, e.g. poles
    • A63B2071/025—Supports, e.g. poles on rollers or wheels
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
    • A63B21/0058—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using motors
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0015—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with an adjustable movement path of the support elements
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
    • A63B22/0015—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with an adjustable movement path of the support elements
    • A63B22/0023—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with an adjustable movement path of the support elements the inclination of the main axis of the movement path being adjustable, e.g. the inclination of an endless band
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00—Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/03575—Apparatus used for exercising upper and lower limbs simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2201/00—Treatment under specific atmosphere
    • B22F2201/02—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Definitions

  • This invention relates to a tool steel article made of a hot worked powder metallurgy tool steel having higher than conventional sulfur content and a method for producing the same.
  • Tool steels are used conventionally in the manufacture of tooling articles employed in both cutting and noncutting tooling applications. This includes the manufacture of broaches and hobs, as well as of rolls, punches and mold components. In these tooling applications, it is necessary that the tool steel have sufficient strength, toughness, and wear resistance to withstand the service conditions encountered in these typical applications. In addition, they must have adequate machinability and grindability to facilitate production of the desired tooling components.
  • a more specific object of the invention is to provide a tool steel article made from a hot worked high sulfur containing powder metallurgy produced tool steel wherein the presence of sulfur and resulting sulfides does not significantly degrade toughness, as exhibited by the bend fracture strength.
  • a machinable powder-metallurgy produced sulfur-containing tool steel article comprising a hot worked, fully dense, consolidated mass of nitrogen-gas atomized, prealloyed particles of a tool steel alloy having a sulfur content of 0.10 to 0.30 weight percent with a maximum sulfide size below about 15 microns.
  • the tool steel alloy of the hot worked article may have a composition of a wrought high speed tool steel or of a wrought cold work tool steel to which sulfur has been intentionally added within a range of 0.10 to 0.30 weight percent.
  • the tool steel of the hot worked article may have in weight percent 0.80 to 3.00 carbon, 0.20 to 2.00 manganese, 0.10 to 0.30 sulfur, up to 0.04 phosphorus, 0.20 to 1.50 silicon, 3.00 to 12.00 chromium, 0.25 to 10.00 vanadium, up to 11.00 molybdenum, up to 18.00 tungsten, up to 10.00 cobalt, up to 0.10 nitrogen, up to 0.025 oxygen, and balance iron and incidental impurities.
  • Tungsten may be substituted for molybdenum in the stoichiometric ratio of 2:1.
  • the machinable powder-metallurgy produced sulfur-containing tool steel article may have a minimum transverse bend fracture strength of 500 ksi when heat treated to a hardness of 64 to 66 HRC.
  • the article comprises a hot-worked, fully dense, consolidated mass of nitrogen gas atomized, prealloyed particles of a tool steel alloy of, in weight percent, 1.25 to 1.50 carbon, 0.20 to 1.00 manganese, 0.10 to 0.26 sulfur, up to 0.04 phosphorous, up to 1.00 silicon, 3.0 to 6.0 chromium, 4.0 to 6.0 molybdenum, 3.50 to 4.50 vanadium, 4.0 to 6.5 tungsten, up to 0.025 oxygen, up to 0.10 nitrogen and balance iron and incidental impurities.
  • the article has a maximum sulfide size below about 15 microns.
  • the sulfur content of the articles in accordance with the invention may be within the range of 0.14 to 0.26%.
  • the invention includes a method for manufacturing a powder-metallurgy sulfur-containing tool steel article of a hot worked, fully dense, consolidated mass of nitrogen atomized, prealloyed particles of a tool steel alloy having a sulfur content of 0.10 to 0.30 weight percent with a maximum sulfide size of about 15 microns.
  • prealloyed particles are produced by nitrogen gas atomization and are hot isostatically compacted to full density at a temperature of 2165°F and a pressure of 15 ksi. The resulting compact is hot worked to a desired article shape at a temperature of 2050°F and the article is then annealed.
  • the method in the invention may also be applied to prealloyed particles of a tool steel alloy of the composition, in weight percent, 0.80 to 3.00 carbon, 0.20 to 2.00 manganese, 0.10 to 0.30 sulfur, up to 0.04 phosphorous, 0.20 to 1.50 silicon, 3.0 to 12.0 chromium, 0.25 to 10.0 vanadium, up to 11.0 molybdenum, up to 18.0 tungsten, up to 10.0 cobalt, up to 0.10 nitrogen, up to 0.025 oxygen, balance iron and incidental impurities.
  • the method of the invention may likewise be used with prealloyed particles of a tool steel alloy of the composition, in weight percent, 1.25 to 1.50 carbon, 0.20 to 1.00 manganese, 0.10 to 0.26 sulfur, up to 0.04 phosphorous, up to 1.00 silicon, 3.0 to 6.0 chromium, 4.0 to 6.0 molybdenum, 3.50 to 4.50 vanadium, 4.0 to 6.5 tungsten, up to 0.025 oxygen, up to 0.10 nitrogen, balance iron and incidental impurities.
  • the sulfur content may be within the range of 0.14 to 0.26 weight percent.
  • the carbon present in the alloy combines with chromium, vanadium, molybdenum and tungsten to form the desired dispersion of wear resistant carbides and to promote secondary hardening. Sufficient carbon is also present to provide for strengthening of the matrix of the steel.
  • the sulfur present in the steel combines primarily with the manganese to produce manganese sulfides or manganese-rich sulfides which facilitate the machinability and grindability of the steel.
  • the high sulfur powder metallurgy produced tool steels used in their construction be hot worked after consolidation to achieve the high mechanical strength needed for tooling components. It is also essential that the production and processing conditions for the powder metallurgy produced tool steels used in the articles of this invention be controlled so that the sizes and distribution of the sulfides introduced by the sulfur additions do not significantly degrade mechanical properties. In the powder metallurgy produced tool steel used in the tool steel articles of this invention, this is achieved by maintaining the maximum size of the sulfides below about 15 ⁇ m in their longest dimension.
  • the production conditions for the experimental tool steels were designed to minimize the size of the sulfides in the microstructure. They were produced from nitrogen gas atomized prealloyed powders produced from 300-pound induction melted heats. About 200 pounds of powder from each heat were screened to -16 mesh (U.S. Standard) and loaded into 8-inch diameter, low carbon steel containers which were hot outgassed at 400°F and then sealed by welding. The containers were then heated to 2165°F and isostatically compacted at this temperature for four hours at a pressure of 15 ksi and then slowly cooled to ambient temperature. The resulting compacts were then heated to a temperature of 2050°F, hot worked to 3-inch diameter bars, and finally annealed using a conventional high speed tool steel annealing cycle.
  • the commercial powder metallurgy tool steels were produced from -16 mesh nitrogen atomized powders and are representative of materials receiving different amounts of hot reduction after consolidation by hot isostatic pressing. No special measures were used in production of these steels to control sulfide size.
  • the results of the drill machinability tests conducted on the experimental tool steels in the annealed condition are given in Table V.
  • the drill machinability indexes in this table were obtained by comparing the times required to drill holes of the same size and depth in these steels and by multiplying the ratios of the times for each steel to that for the experimental steel with 0.005% sulfur by 100. Indexes greater than 100 indicate that the drill machinability of the steel being tested is greater than that of the experimental tool steel article containing 0.005% sulfur (Steel 91-60).
  • the results show that increasing sulfur from 0.005 to 0.26% improves machinability of the experimental tool steels and that the greater improvement is achieved at sulfur contents at or above about 0.14%.
  • sulfur containing tool steel article is restricted to cold work tool steels and high speed tool steels.

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  • Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Biophysics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Cardiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
EP94306632A 1993-09-27 1994-09-09 Artikel aus Schwefel enthaltenden Werkzeugstahlpulver und Verfahren zu seiner Herstellung Revoked EP0648851B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12656293A 1993-09-27 1993-09-27
US126562 1993-09-27

Publications (2)

Publication Number Publication Date
EP0648851A1 true EP0648851A1 (de) 1995-04-19
EP0648851B1 EP0648851B1 (de) 1999-07-14

Family

ID=22425515

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EP94306632A Revoked EP0648851B1 (de) 1993-09-27 1994-09-09 Artikel aus Schwefel enthaltenden Werkzeugstahlpulver und Verfahren zu seiner Herstellung

Country Status (8)

Country Link
EP (1) EP0648851B1 (de)
JP (1) JPH07179908A (de)
AT (1) ATE182183T1 (de)
CA (1) CA2131652C (de)
DE (1) DE69419474T2 (de)
DK (1) DK0648851T3 (de)
ES (1) ES2135544T3 (de)
GR (1) GR3031225T3 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0773305A1 (de) * 1995-11-08 1997-05-14 Crucible Materials Corporation Korrosionsbeständige vanadiumreiche Werkzeugstahlkörper aus Metallpulver mit grosser Metall-Metall-Verschleissfestigkeit und Verfahren ihrer Herstellung
AT411580B (de) * 2001-04-11 2004-03-25 Boehler Edelstahl Verfahren zur pulvermetallurgischen herstellung von gegenständen
EP1471160A1 (de) * 2003-04-24 2004-10-27 BÖHLER Edelstahl GmbH Kaltarbeitsstahl-Gegenstand

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508872C2 (sv) * 1997-03-11 1998-11-09 Erasteel Kloster Ab Pulvermetallurgiskt framställt stål för verktyg, verktyg framställt därav, förfarande för framställning av stål och verktyg samt användning av stålet
GB0912669D0 (en) * 2009-07-21 2009-08-26 Skf Publ Ab Bearing steels

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598567A (en) * 1968-07-01 1971-08-10 Nicholas J Grant Stainless steel powder product
EP0183666A1 (de) * 1984-11-30 1986-06-04 Höganäs AB Mangansulfid enthaltendes Eisenpulver und Verfahren zu dessen Herstellung
DE4040030A1 (de) * 1989-12-22 1991-06-27 Htm Ag Pulvermetallurgischer kaltarbeitsstahl mit hoher verschleiss- und korrosionsfestigkeit und seine herstellung
EP0515018A1 (de) * 1991-05-22 1992-11-25 Crucible Materials Corporation Vorlegierte vanadiumreiche Kaltarbeitswerkzeugstahlteilchen und Verfahren zu deren Herstellung

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Publication number Priority date Publication date Assignee Title
JPS5817802B2 (ja) * 1980-03-03 1983-04-09 株式会社神戸製鋼所 粉末高速度鋼の熱間加工法
JPS63149707A (ja) * 1986-12-15 1988-06-22 Fujitsu Ltd ロボツトの速度指令生成方法
JPH02232302A (ja) * 1989-03-04 1990-09-14 Daido Steel Co Ltd 粉末高合金鋼圧延材の製造方法
JPH03247743A (ja) * 1990-02-26 1991-11-05 Kawasaki Steel Corp 耐食性、被削性および鏡面性に優れた焼結合金鋼およびその製造方法
JPH0480305A (ja) * 1990-07-24 1992-03-13 Daido Steel Co Ltd 粉末高速度鋼製品の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598567A (en) * 1968-07-01 1971-08-10 Nicholas J Grant Stainless steel powder product
EP0183666A1 (de) * 1984-11-30 1986-06-04 Höganäs AB Mangansulfid enthaltendes Eisenpulver und Verfahren zu dessen Herstellung
DE4040030A1 (de) * 1989-12-22 1991-06-27 Htm Ag Pulvermetallurgischer kaltarbeitsstahl mit hoher verschleiss- und korrosionsfestigkeit und seine herstellung
EP0515018A1 (de) * 1991-05-22 1992-11-25 Crucible Materials Corporation Vorlegierte vanadiumreiche Kaltarbeitswerkzeugstahlteilchen und Verfahren zu deren Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
J.R.DAVIS ET AL: "METALS HANDBOOK", 1990, ASM, OHIO, 13397 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0773305A1 (de) * 1995-11-08 1997-05-14 Crucible Materials Corporation Korrosionsbeständige vanadiumreiche Werkzeugstahlkörper aus Metallpulver mit grosser Metall-Metall-Verschleissfestigkeit und Verfahren ihrer Herstellung
KR100433161B1 (ko) * 1995-11-08 2004-09-07 크루시블 매터리얼스 코포레이션 개선된금속간내마모성을갖는내부식성,고바나듐,분말야금공구강제품및그생산방법
AT411580B (de) * 2001-04-11 2004-03-25 Boehler Edelstahl Verfahren zur pulvermetallurgischen herstellung von gegenständen
EP1471160A1 (de) * 2003-04-24 2004-10-27 BÖHLER Edelstahl GmbH Kaltarbeitsstahl-Gegenstand
US7682417B2 (en) 2003-04-24 2010-03-23 Bohler Edelstahl Gmbh Cold work steel article

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Publication number Publication date
EP0648851B1 (de) 1999-07-14
CA2131652A1 (en) 1995-03-28
ATE182183T1 (de) 1999-07-15
DK0648851T3 (da) 1999-11-29
DE69419474T2 (de) 2000-03-16
CA2131652C (en) 2004-06-01
DE69419474D1 (de) 1999-08-19
ES2135544T3 (es) 1999-11-01
JPH07179908A (ja) 1995-07-18
GR3031225T3 (en) 1999-12-31

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