JPS6415396A - Metal boy having heat and corrosion resistant surface - Google Patents

Metal boy having heat and corrosion resistant surface

Info

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
Application number
JP16973087A
Other languages
Japanese (ja)
Inventor
Takafumi Oshima
Shigeyasu Yamada
Nobuyuki Suganuma
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.)
Nagoya Mekki Inc
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Nagoya Mekki Kogyo KK
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 NGK Spark Plug Co Ltd, Nagoya Mekki Kogyo KK filed Critical NGK Spark Plug Co Ltd
Priority to JP16973087A priority Critical patent/JPS6415396A/en
Publication of JPS6415396A publication Critical patent/JPS6415396A/en
Pending legal-status Critical Current

Links

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  • 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.
JP16973087A 1987-07-09 1987-07-09 Metal boy having heat and corrosion resistant surface Pending JPS6415396A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58197288A (en) * 1982-05-14 1983-11-16 Ebara Yuujiraito Kk Plated product and its production

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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