FR2206390A1 - Hard-facing valve seats - by depositing a layer of nickel -tungsten hot work tool steel - Google Patents
Hard-facing valve seats - by depositing a layer of nickel -tungsten hot work tool steelInfo
- Publication number
- FR2206390A1 FR2206390A1 FR7340072A FR7340072A FR2206390A1 FR 2206390 A1 FR2206390 A1 FR 2206390A1 FR 7340072 A FR7340072 A FR 7340072A FR 7340072 A FR7340072 A FR 7340072A FR 2206390 A1 FR2206390 A1 FR 2206390A1
- Authority
- FR
- France
- Prior art keywords
- depositing
- nickel
- hard
- hot work
- layer
- 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.)
- Granted
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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
A wear-resistant coating of Ni-W, high strength, hot work steel is deposited on a valve seating under a reducing flame while the valve is rotated in a lathe. After a heat treatment of is not >750 degrees C, the hardness and abrasion resistance are several times better than the usual stellite coating. Deposition is uniform and the results are repeatable.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD16681172A DD100420A1 (en) | 1972-11-13 | 1972-11-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2206390A1 true FR2206390A1 (en) | 1974-06-07 |
FR2206390B3 FR2206390B3 (en) | 1976-09-24 |
Family
ID=5488891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7340072A Granted FR2206390A1 (en) | 1972-11-13 | 1973-11-12 | Hard-facing valve seats - by depositing a layer of nickel -tungsten hot work tool steel |
Country Status (3)
Country | Link |
---|---|
DD (1) | DD100420A1 (en) |
DE (1) | DE2354932A1 (en) |
FR (1) | FR2206390A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2380419A2 (en) * | 1977-02-15 | 1978-09-08 | Dervaux Ets | IC engine valve body - is provided with a welded-on plate which is partially melted before welding |
-
1972
- 1972-11-13 DD DD16681172A patent/DD100420A1/xx unknown
-
1973
- 1973-11-02 DE DE19732354932 patent/DE2354932A1/en active Pending
- 1973-11-12 FR FR7340072A patent/FR2206390A1/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2380419A2 (en) * | 1977-02-15 | 1978-09-08 | Dervaux Ets | IC engine valve body - is provided with a welded-on plate which is partially melted before welding |
Also Published As
Publication number | Publication date |
---|---|
DE2354932A1 (en) | 1974-05-16 |
DD100420A1 (en) | 1973-09-20 |
FR2206390B3 (en) | 1976-09-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |