JPS5785988A - Electroplating method for inside of steel pipe with zinc - Google Patents

Electroplating method for inside of steel pipe with zinc

Info

Publication number
JPS5785988A
JPS5785988A JP15939280A JP15939280A JPS5785988A JP S5785988 A JPS5785988 A JP S5785988A JP 15939280 A JP15939280 A JP 15939280A JP 15939280 A JP15939280 A JP 15939280A JP S5785988 A JPS5785988 A JP S5785988A
Authority
JP
Japan
Prior art keywords
pipe
zinc
slightly soluble
soln
anode
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
JP15939280A
Other languages
Japanese (ja)
Inventor
Haruo Konishi
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.)
KOSAKU KK
Original Assignee
KOSAKU 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 KOSAKU KK filed Critical KOSAKU KK
Priority to JP15939280A priority Critical patent/JPS5785988A/en
Publication of JPS5785988A publication Critical patent/JPS5785988A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To electroplate the inside of a cylindrical iron pipe with zinc uniformly and efficiently by setting a slightly soluble zinc anode at the internal center of the pipe, pouring a plating soln. in the pipe as a cathode, and carrying out electrolysis.
CONSTITUTION: A rodlike anode of slightly soluble zinc with little chemical solubility is fixed at the internal center of a cylindrical iron pipe as a cathode, and the bottom of the pipe is sealed. A plating soln. such as a mixed soln. of NaCN and ZnO is poured in the pipe, and electrolysis is carried out to form a zinc electroplated film having a uniform thickness on the whole inner wall of the pipe. Since the anode is chemically slightly soluble, it undergoes little change in the diameter, the concn. of the plating soln. is stabilized, and the distribution of electric current in the soln. is made uniform. Thus, electroplating is conducted very smoothly. A composition consisting of zinc and a little Mg is used as a slightly soluble zinc composition.
COPYRIGHT: (C)1982,JPO&Japio
JP15939280A 1980-11-14 1980-11-14 Electroplating method for inside of steel pipe with zinc Pending JPS5785988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15939280A JPS5785988A (en) 1980-11-14 1980-11-14 Electroplating method for inside of steel pipe with zinc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15939280A JPS5785988A (en) 1980-11-14 1980-11-14 Electroplating method for inside of steel pipe with zinc

Publications (1)

Publication Number Publication Date
JPS5785988A true JPS5785988A (en) 1982-05-28

Family

ID=15692775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15939280A Pending JPS5785988A (en) 1980-11-14 1980-11-14 Electroplating method for inside of steel pipe with zinc

Country Status (1)

Country Link
JP (1) JPS5785988A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995084A (en) * 2012-11-26 2013-03-27 宁波市江北名正电机有限公司 Closed galvanizing method for stamping two ends of steel pipe

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54121240A (en) * 1978-03-14 1979-09-20 Toshiba Corp Internal surface plating of elongated metal pipe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54121240A (en) * 1978-03-14 1979-09-20 Toshiba Corp Internal surface plating of elongated metal pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102995084A (en) * 2012-11-26 2013-03-27 宁波市江北名正电机有限公司 Closed galvanizing method for stamping two ends of steel pipe
CN102995084B (en) * 2012-11-26 2016-01-20 宁波市江北名正电机有限公司 Galvanized method is closed in the punching press of steel pipe two

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