EP0855950B1 - Procede permettant d'ameliorer la durabilite de trepans hydrauliques - Google Patents

Procede permettant d'ameliorer la durabilite de trepans hydrauliques Download PDF

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Publication number
EP0855950B1
EP0855950B1 EP96945503A EP96945503A EP0855950B1 EP 0855950 B1 EP0855950 B1 EP 0855950B1 EP 96945503 A EP96945503 A EP 96945503A EP 96945503 A EP96945503 A EP 96945503A EP 0855950 B1 EP0855950 B1 EP 0855950B1
Authority
EP
European Patent Office
Prior art keywords
hrc
chisel
hardness
hydraulic
chisels
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.)
Expired - Lifetime
Application number
EP96945503A
Other languages
German (de)
English (en)
Other versions
EP0855950A1 (fr
Inventor
Christian Hunger
Hans-Gerd Fischer
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.)
Hunger Christian
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 EP0855950A1 publication Critical patent/EP0855950A1/fr
Application granted granted Critical
Publication of EP0855950B1 publication Critical patent/EP0855950B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/02—Percussive tool bits

Definitions

  • the impact is transmitted over the striking head (2), the core (4) onto the working tip (1).
  • the core (4) onto the working tip (1) For this requirement there are high hardness values of 50-53 HRc necessary. A deformation (compression with burr formation) on the impact head is avoided.
  • the working tip (1) receives a high one Wear resistance, which over the entire period of wear Work area is preserved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)
  • Earth Drilling (AREA)

Claims (2)

  1. Une méthode pour améliorer la durabilité de trépans hydrauliques, caractérisée du fait que le trépan est fait revenir encore une fois avec des températures plus élevées aux duretés de surface de 40-43 HRC, après la trempe et revenu aux 50-53 HRC au diamètre extérieur (3), fraisage (6) compris.
  2. Méthode selon revendication-1, caractérisée du fait qu'une décarburation du bord partielle et appropriée est fait au trépan hydraulique avant la trempe et revenu au diamètre extérieur, fraisage compris (3+6). Pendant la trempe et revenu suivants, une dureté de 40-43 HRC est apportée à la surface (3+6) et à la tête de coup (2), au côté de travail (1) et à l'intérieur (4) une dureté de 50-53 HRC est apportée à cause de la teneur en carbone du bord diminuée.
EP96945503A 1995-10-17 1996-10-17 Procede permettant d'ameliorer la durabilite de trepans hydrauliques Expired - Lifetime EP0855950B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19538535 1995-10-17
DE19538535 1995-10-17
PCT/DE1996/001967 WO1997015421A1 (fr) 1995-10-17 1996-10-17 Procede permettant d'ameliorer la durabilite de trepans hydrauliques

Publications (2)

Publication Number Publication Date
EP0855950A1 EP0855950A1 (fr) 1998-08-05
EP0855950B1 true EP0855950B1 (fr) 2003-01-15

Family

ID=7775011

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96945503A Expired - Lifetime EP0855950B1 (fr) 1995-10-17 1996-10-17 Procede permettant d'ameliorer la durabilite de trepans hydrauliques

Country Status (3)

Country Link
EP (1) EP0855950B1 (fr)
DE (2) DE19641510A1 (fr)
WO (1) WO1997015421A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9085074B2 (en) 2011-03-22 2015-07-21 Black & Decker Inc. Chisels
USD734792S1 (en) 2013-03-15 2015-07-21 Black & Decker Inc. Drill bit
USD737875S1 (en) 2013-03-15 2015-09-01 Black & Decker Inc. Drill bit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210301361A1 (en) * 2020-03-31 2021-09-30 Caterpillar Inc. Tool for a hydraulic hammer
EP3925735A1 (fr) * 2020-06-17 2021-12-22 Hilti Aktiengesellschaft Outil et système

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT377207B (de) * 1981-05-22 1985-02-25 Schobesberger Ernst Ing Verfahren zur herstellung von schaftmeisseln
JPS61153231A (ja) * 1984-12-27 1986-07-11 Daido Steel Co Ltd さく岩機用ロツドの熱処理方法
JPH0631653A (ja) * 1992-07-22 1994-02-08 Nippon Pneumatic Mfg Co Ltd 衝撃動工具のチゼル
JPH06297164A (ja) * 1993-04-13 1994-10-25 Mitsubishi Steel Mfg Co Ltd ブレーカー用チゼルの製造方法
DE29516413U1 (de) * 1995-10-17 1996-04-25 Hunger Christian Meissel für Hydraulikhammer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9085074B2 (en) 2011-03-22 2015-07-21 Black & Decker Inc. Chisels
USD734792S1 (en) 2013-03-15 2015-07-21 Black & Decker Inc. Drill bit
USD737875S1 (en) 2013-03-15 2015-09-01 Black & Decker Inc. Drill bit

Also Published As

Publication number Publication date
WO1997015421A1 (fr) 1997-05-01
EP0855950A1 (fr) 1998-08-05
DE19641510A1 (de) 1997-11-06
DE59610057D1 (de) 2003-02-20

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