JPS5672164A - Chemically washing method for steel member - Google Patents

Chemically washing method for steel member

Info

Publication number
JPS5672164A
JPS5672164A JP14947779A JP14947779A JPS5672164A JP S5672164 A JPS5672164 A JP S5672164A JP 14947779 A JP14947779 A JP 14947779A JP 14947779 A JP14947779 A JP 14947779A JP S5672164 A JPS5672164 A JP S5672164A
Authority
JP
Japan
Prior art keywords
acid
soln
org
adjusted
steel member
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
Application number
JP14947779A
Other languages
Japanese (ja)
Other versions
JPS602391B2 (en
Inventor
Yukio Hayashi
Yoshio Kudo
Taketoshi Furusawa
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP14947779A priority Critical patent/JPS602391B2/en
Publication of JPS5672164A publication Critical patent/JPS5672164A/en
Publication of JPS602391B2 publication Critical patent/JPS602391B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

PURPOSE: To prevent the corrosion of a steel member due to scale and rust with a single soln. by descaling the member with an org. acid soln. pH-adjusted with an org. acid or an aqueous ammonia and adding a pH adjusting agent, polyphosphate and nitrite to the soln. to carry out rust preventive treatment.
CONSTITUTION: An aqueous soln. of one or more kinds of org. acids selected from citric acid, malic acid, gluconic acid and glycolic acid is adjusted to 3.0W3.5pH with sulfamic acid and/or tartaric acid or an aqueous ammonia, and a steel member is descaled by dipping in the resulting soln. To the soln. are then added one or more among an aqueous ammonia, ethanolamine and hydrazine as a pH adjusting agent, one or more kinds of polyphosphates selected from polyphosphate, ultraphosphate and metaphosphate and nitrite, and rust preventive treatment is carried out with the soln. adjusted to 5W9pH. At this time, the org. acid concn. is also adjusted so as to prevent the precipitation of leached Fe ions.
COPYRIGHT: (C)1981,JPO&Japio
JP14947779A 1979-11-20 1979-11-20 Chemical cleaning method for steel parts Expired JPS602391B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14947779A JPS602391B2 (en) 1979-11-20 1979-11-20 Chemical cleaning method for steel parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14947779A JPS602391B2 (en) 1979-11-20 1979-11-20 Chemical cleaning method for steel parts

Publications (2)

Publication Number Publication Date
JPS5672164A true JPS5672164A (en) 1981-06-16
JPS602391B2 JPS602391B2 (en) 1985-01-21

Family

ID=15475997

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14947779A Expired JPS602391B2 (en) 1979-11-20 1979-11-20 Chemical cleaning method for steel parts

Country Status (1)

Country Link
JP (1) JPS602391B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58110681A (en) * 1981-12-23 1983-07-01 Showa Denko Kk Rust removing method for pure iron
EP0589966A1 (en) * 1991-05-16 1994-04-06 H.E.R.C. Products Incorporated Soap compositions of carboxylic acids and amines useful in removal and prevention of scale
JP2021518883A (en) * 2018-05-11 2021-08-05 マクダーミッド エンソン インコーポレイテッド Pickling solution near neutral pH on multiple metals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61109493A (en) * 1984-10-30 1986-05-27 Eiji Ishii Induction motor drive device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58110681A (en) * 1981-12-23 1983-07-01 Showa Denko Kk Rust removing method for pure iron
EP0589966A1 (en) * 1991-05-16 1994-04-06 H.E.R.C. Products Incorporated Soap compositions of carboxylic acids and amines useful in removal and prevention of scale
EP0589966A4 (en) * 1991-05-16 1994-05-18 Herc Inc Soap compositions of carboxylic acids and amines useful in removal and prevention of scale
JP2021518883A (en) * 2018-05-11 2021-08-05 マクダーミッド エンソン インコーポレイテッド Pickling solution near neutral pH on multiple metals

Also Published As

Publication number Publication date
JPS602391B2 (en) 1985-01-21

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