JPS5647584A - Prevention of liquid ammonia storage tank from stress corrosion cracking - Google Patents

Prevention of liquid ammonia storage tank from stress corrosion cracking

Info

Publication number
JPS5647584A
JPS5647584A JP12416779A JP12416779A JPS5647584A JP S5647584 A JPS5647584 A JP S5647584A JP 12416779 A JP12416779 A JP 12416779A JP 12416779 A JP12416779 A JP 12416779A JP S5647584 A JPS5647584 A JP S5647584A
Authority
JP
Japan
Prior art keywords
jig
storage tank
stress corrosion
corrosion cracking
liquid ammonia
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
JP12416779A
Other languages
Japanese (ja)
Other versions
JPS5939639B2 (en
Inventor
Katsu Takahashi
Hideaki Obana
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.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co 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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP12416779A priority Critical patent/JPS5939639B2/en
Publication of JPS5647584A publication Critical patent/JPS5647584A/en
Publication of JPS5939639B2 publication Critical patent/JPS5939639B2/en
Expired 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Coating With Molten Metal (AREA)

Abstract

PURPOSE:To prevent the tank from the stress corrosion cracking easily and economically by forming a zinc coating in a specific range both sides of a weld line, a jig impression and existing jig in an inner surface of the liquid ammonia storage tank. CONSTITUTION:In the inner surface of the tank constituting material of the liquid ammonia storage tank, the zinc coating is formed in a range of 5-60cm from the center of the weld line to one side on both sides of the weld line, in a range of 3- 40cm from an inside or a periphery of the jig impression when the jig impression is formed and in a range of 3-40cm from a periphery of the jig when the jig is present. The thickness of the zinc coating is about 60-500g/m<2> and, even if the zinc coating is limited to only lower portion below an ordinary liquid level of the tank, the effect for preventing stress corrosion cracking is sufficient.
JP12416779A 1979-09-28 1979-09-28 Method for preventing stress corrosion cracking in liquid ammonia storage tanks Expired JPS5939639B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12416779A JPS5939639B2 (en) 1979-09-28 1979-09-28 Method for preventing stress corrosion cracking in liquid ammonia storage tanks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12416779A JPS5939639B2 (en) 1979-09-28 1979-09-28 Method for preventing stress corrosion cracking in liquid ammonia storage tanks

Publications (2)

Publication Number Publication Date
JPS5647584A true JPS5647584A (en) 1981-04-30
JPS5939639B2 JPS5939639B2 (en) 1984-09-25

Family

ID=14878598

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12416779A Expired JPS5939639B2 (en) 1979-09-28 1979-09-28 Method for preventing stress corrosion cracking in liquid ammonia storage tanks

Country Status (1)

Country Link
JP (1) JPS5939639B2 (en)

Also Published As

Publication number Publication date
JPS5939639B2 (en) 1984-09-25

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