JPS6415396A - Metal boy having heat and corrosion resistant surface - Google Patents
Metal boy having heat and corrosion resistant surfaceInfo
- Publication number
- JPS6415396A JPS6415396A JP16973087A JP16973087A JPS6415396A JP S6415396 A JPS6415396 A JP S6415396A JP 16973087 A JP16973087 A JP 16973087A JP 16973087 A JP16973087 A JP 16973087A JP S6415396 A JPS6415396 A JP S6415396A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- high temp
- chromating
- heat
- spark plug
- 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.)
- Pending
Links
Landscapes
- Spark Plugs (AREA)
Abstract
PURPOSE:To improve the heat and corrosion resistances of a metal body used at high temp. and pressure by forming a chromate film on the surface of the body by electrolytic chromating. CONSTITUTION:A body used at high temp. and pressure, e.g., a spark plug 1 has a terminal part 2, an insulating part 3, a main metal fitting 4, a screw part 5 necessary for screwing and fixing in the head of an engine such as an internal combustion engine, and central and marginal electrodes 6, 7 on the tip. The main metal fitting 4 is immersed in a soln. contg. chromatic anhydride for color chromating after galvanizing, black Cr alloy plating and electrolytic chromating is carried out to coat the surface of a steel part 8 as the base of the fitting 4 with a chromate film 9. The resulting spark plug has salt water resistance and can well withstand use under severe conditions, e.g., in a strong oxidizing atmosphere at high temp. and pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16973087A JPS6415396A (en) | 1987-07-09 | 1987-07-09 | Metal boy having heat and corrosion resistant surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16973087A JPS6415396A (en) | 1987-07-09 | 1987-07-09 | Metal boy having heat and corrosion resistant surface |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6415396A true JPS6415396A (en) | 1989-01-19 |
Family
ID=15891787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16973087A Pending JPS6415396A (en) | 1987-07-09 | 1987-07-09 | Metal boy having heat and corrosion resistant surface |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6415396A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001050559A1 (en) * | 2000-01-05 | 2001-07-12 | Honeywell International Inc. | Spark plug having a protective titanium coating thereon, and methods of making same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58197288A (en) * | 1982-05-14 | 1983-11-16 | Ebara Yuujiraito Kk | Plated product and its production |
-
1987
- 1987-07-09 JP JP16973087A patent/JPS6415396A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58197288A (en) * | 1982-05-14 | 1983-11-16 | Ebara Yuujiraito Kk | Plated product and its production |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001050559A1 (en) * | 2000-01-05 | 2001-07-12 | Honeywell International Inc. | Spark plug having a protective titanium coating thereon, and methods of making same |
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