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2 222 802

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Application

2002135750/28, 2002-12-30

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Start date

2002-12-30

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Actual filing date

2002-12-30

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Published

2004-01-27

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Inventor

Kuznetsov V.Ju.Lube I.I.Frolochkin V.V.Kuznetsova E.Ja.Pecheritsa A.A.Rodionova I.G.Baklanova O.N.Shapovalov Eh.T.Ehndel' N.I.Reformatskaja I.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Trubnyj Zavod"

METHOD OF QUALITY CONTROL OF STEEL ARTICLES Russian patent published in 2004 - IPC

Abstract RU 2222802 C1

FIELD: metallurgy, quality control of steel articles intended for operation in corrosive media. SUBSTANCE: in correspondence with method specimens of articles are selected, microsections of specimens with polished surface are prepared, this surface is treated in the course of specified time with chemical agent containing chlorine ions. Nonmetallic inclusions causing corrosion are brought to light and their number is used to make judgment on corrosion resistance of articles. According to invention polished surface of microsections of specimens is treated in aqueous solution carrying 6-15 g/l of chlorine ions by electrochemical method under potentiodynamic condition with potential that changes with rate 0.36-3.6 V/h, or from -450 to -700 mV, or from -700 to -450 mV. EFFECT: increased informativity and authenticity of quality control. 1 tbl

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RU 2 222 802 C1

Authors

Kuznetsov V.Ju.

Lube I.I.

Frolochkin V.V.

Kuznetsova E.Ja.

Pecheritsa A.A.

Rodionova I.G.

Baklanova O.N.

Shapovalov Eh.T.

Ehndel' N.I.

Reformatskaja I.I.

Dates

2004-01-27—Published

2002-12-30—Filed