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JPS57116779A - Solution for hydrostatic test - Google Patents

Solution for hydrostatic test

Info

Publication number
JPS57116779A
JPS57116779A JP410981A JP410981A JPS57116779A JP S57116779 A JPS57116779 A JP S57116779A JP 410981 A JP410981 A JP 410981A JP 410981 A JP410981 A JP 410981A JP S57116779 A JPS57116779 A JP S57116779A
Authority
JP
Japan
Prior art keywords
soln
hydrostatic test
phosphate
carbon steel
solution
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
JP410981A
Other languages
Japanese (ja)
Inventor
Keiichi Miwa
Ryuzo Hiraoka
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP410981A priority Critical patent/JPS57116779A/en
Publication of JPS57116779A publication Critical patent/JPS57116779A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/18—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using inorganic inhibitors
    • C23F11/187—Mixtures of inorganic inhibitors
    • C23F11/188—Mixtures of inorganic inhibitors containing phosphates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

PURPOSE:To improve the corrosion preventive effect of the titled soln. obtained by contg. nitrite and a small amt. of phosphate in the solution and completely preventing copper alloys and carbon steel from discoloration and formation of rust. CONSTITUTION:This soln. for hydrostatic test for an apparatus constituted of carbon steel and copper alloys contains >=0.5% nitrite and 0.0025-0.0075% phosphate. This soln. has excellent corrosion preventive effect for copper alloys and carbon steel, and completely prevents said alloys or steel from discoloration and formation of rust after the completion of the hydrostatic test. Since this soln. is controlled of pH to approximately 7, it is easy to handle, and since the concn. of phosphate is low, it is inexpensive.
JP410981A 1981-01-14 1981-01-14 Solution for hydrostatic test Pending JPS57116779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP410981A JPS57116779A (en) 1981-01-14 1981-01-14 Solution for hydrostatic test

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP410981A JPS57116779A (en) 1981-01-14 1981-01-14 Solution for hydrostatic test

Publications (1)

Publication Number Publication Date
JPS57116779A true JPS57116779A (en) 1982-07-20

Family

ID=11575617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP410981A Pending JPS57116779A (en) 1981-01-14 1981-01-14 Solution for hydrostatic test

Country Status (1)

Country Link
JP (1) JPS57116779A (en)

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