WO1988001917A1 - Procede de forgeage exempt de decarburation et d'oxydation pour l'usinage de pieces metalliques dans un environnement atmospherique - Google Patents

Procede de forgeage exempt de decarburation et d'oxydation pour l'usinage de pieces metalliques dans un environnement atmospherique Download PDF

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Publication number
WO1988001917A1
WO1988001917A1 PCT/JP1986/000523 JP8600523W WO8801917A1 WO 1988001917 A1 WO1988001917 A1 WO 1988001917A1 JP 8600523 W JP8600523 W JP 8600523W WO 8801917 A1 WO8801917 A1 WO 8801917A1
Authority
WO
WIPO (PCT)
Prior art keywords
decarburization
oxidation
metallic parts
forging process
process free
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP1986/000523
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Koichi Matsuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1988001917A1 publication Critical patent/WO1988001917A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling

Definitions

  • the present invention prevents the carbon contained in the iron-tin material in hot forging from causing a dissociation (decarburization) phenomenon from the outer material surface layer in a chemical reaction by thermal oxidation.
  • Carbon content is an essential condition for steel surface hardening
  • Cross-roll forging is easier to process than cold forging because it maintains high temperatures and softens the glow material during the working process.
  • post-processing cutting was necessary because the operation in high temperature caused a chemical delamination (decarburization) phenomenon from the outer material surface layer due to the chemical reaction due to thermal oxidation.
  • the main process section is induction-heated in a gas (gas for preventing decarburization, for example, nitrogen gas) atmosphere, and the inlet and outlet of the product material in the gas atmosphere are connected to the atmosphere by oil force. Cut off.
  • a gas gas for preventing decarburization, for example, nitrogen gas
  • the material is supplied to the parts feeder so that the oil power can pass through, and the material is carried into the atmosphere.
  • the wood invention can significantly reduce post-processing compared to the conventional method, and at the same time, reduce costs.
  • the drawing is a cross section of a forging method for preventing decarburization and oxidation in a metal part processing process in an atmosphere.
  • the main process section is covered with a cover 3, and a gas generator 1 is installed at the inlet 4 and filled in the atmosphere 6 for induction heating.
  • a part of the heated gas is released from the discharge port 5, and the gas temperature is adjusted in the atmosphere while replenishing the part.
  • cross roll forging machine will not be operated after shutting off and sealing the oil curtain 2 at the entrance and exit of the machined parts.
  • the forging method of decarburization prevention and oxidation prevention it in the metal parts processing step requires, in particular, the degree of camellia of automobile parts and the like. It is most suitable for processing parts, and many automobile parts require quenching forging, which results in a significant cost town.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Lubricants (AREA)
PCT/JP1986/000523 1986-09-11 1986-10-14 Procede de forgeage exempt de decarburation et d'oxydation pour l'usinage de pieces metalliques dans un environnement atmospherique Ceased WO1988001917A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP13988586U JPS6347037U (https=) 1986-09-11 1986-09-11
JP61/139885U 1986-09-11

Publications (1)

Publication Number Publication Date
WO1988001917A1 true WO1988001917A1 (fr) 1988-03-24

Family

ID=15255856

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1986/000523 Ceased WO1988001917A1 (fr) 1986-09-11 1986-10-14 Procede de forgeage exempt de decarburation et d'oxydation pour l'usinage de pieces metalliques dans un environnement atmospherique

Country Status (2)

Country Link
JP (1) JPS6347037U (https=)
WO (1) WO1988001917A1 (https=)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58157544A (ja) * 1982-03-12 1983-09-19 Goto Tanko Kk 鍛造法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58157544A (ja) * 1982-03-12 1983-09-19 Goto Tanko Kk 鍛造法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HAYAMA MASUJIRO, "Kaiten Sosei Gaku", 1 April 1981 (01.04.81), Kindai Henshu-sha, p165. *

Also Published As

Publication number Publication date
JPS6347037U (https=) 1988-03-30

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