DE2856055C2 - - Google Patents

Info

Publication number
DE2856055C2
DE2856055C2 DE19782856055 DE2856055A DE2856055C2 DE 2856055 C2 DE2856055 C2 DE 2856055C2 DE 19782856055 DE19782856055 DE 19782856055 DE 2856055 A DE2856055 A DE 2856055A DE 2856055 C2 DE2856055 C2 DE 2856055C2
Authority
DE
Germany
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
Application number
DE19782856055
Other languages
German (de)
Other versions
DE2856055A1 (en
Inventor
Hagen 7104 Obersulm De Hummel
Lothar Dipl.-Ing. 7056 Weinstadt De Wiemann
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.)
Mahle GmbH
Original Assignee
Mahle GmbH
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 Mahle GmbH filed Critical Mahle GmbH
Priority to DE19782856055 priority Critical patent/DE2856055A1/en
Publication of DE2856055A1 publication Critical patent/DE2856055A1/en
Application granted granted Critical
Publication of DE2856055C2 publication Critical patent/DE2856055C2/de
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
DE19782856055 1978-12-23 1978-12-23 IC engine ferrous piston ring flank hardening - is carried out in two stages separated by tool cutting operation for distortion correction Granted DE2856055A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782856055 DE2856055A1 (en) 1978-12-23 1978-12-23 IC engine ferrous piston ring flank hardening - is carried out in two stages separated by tool cutting operation for distortion correction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782856055 DE2856055A1 (en) 1978-12-23 1978-12-23 IC engine ferrous piston ring flank hardening - is carried out in two stages separated by tool cutting operation for distortion correction

Publications (2)

Publication Number Publication Date
DE2856055A1 DE2856055A1 (en) 1980-07-03
DE2856055C2 true DE2856055C2 (en) 1987-03-12

Family

ID=6058325

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782856055 Granted DE2856055A1 (en) 1978-12-23 1978-12-23 IC engine ferrous piston ring flank hardening - is carried out in two stages separated by tool cutting operation for distortion correction

Country Status (1)

Country Link
DE (1) DE2856055A1 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1404865A (en) * 1971-12-29 1975-09-03 Nissan Motor Method of forming hardened layers on castings

Also Published As

Publication number Publication date
DE2856055A1 (en) 1980-07-03

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licenses declared (paragraph 23)
8339 Ceased/non-payment of the annual fee