KR970043339A - Electrolytic Acid Tax on Austenitic Stainless Steels - Google Patents

Electrolytic Acid Tax on Austenitic Stainless Steels Download PDF

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Publication number
KR970043339A
KR970043339A KR1019950048480A KR19950048480A KR970043339A KR 970043339 A KR970043339 A KR 970043339A KR 1019950048480 A KR1019950048480 A KR 1019950048480A KR 19950048480 A KR19950048480 A KR 19950048480A KR 970043339 A KR970043339 A KR 970043339A
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KR
South Korea
Prior art keywords
austenitic stainless
stainless steel
electrolytic
electrolytic pickling
steel sheet
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Application number
KR1019950048480A
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Korean (ko)
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KR100368207B1 (en
Inventor
원태연
최염호
Original Assignee
김종진
포항종합제철주식회사
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Priority to KR1019950048480A priority Critical patent/KR100368207B1/en
Publication of KR970043339A publication Critical patent/KR970043339A/en
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Publication of KR100368207B1 publication Critical patent/KR100368207B1/en

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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • C25F1/02—Pickling; Descaling
    • C25F1/04—Pickling; Descaling in solution
    • C25F1/06—Iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite

Abstract

본 발명은 오스테나이트계 스텐레스 냉연소둔강판의 전해산세액에 관한 것으로,적정농도범위의 질산과 불산의 혼산용액에 포테시움 몰리브데이트(K2MOO4) 또는 염화철(FeCl3)적정범위로 첨가하여 전해산세액을 조성하므로서, 오스테나이트계 스텐레스 냉연강판을 용융염에서 예비탈스케일 처리후 전해산세시 우수한 산세특성을 나타내도록 된 오스테나이트계 스텐레스 냉연강판의 전해산세액을 제공하고자 하는데 그 목적이 있다.The present invention relates to an electrolytic acid wash of an austenitic stainless steel cold rolled and annealed steel sheet. The present invention relates to a mixed solution of nitric acid and hydrofluoric acid in a suitable concentration range in a range of suitable forteium molybdate (K 2 MOO 4 ) or iron chloride (FeCl 3 ). By adding an electrolytic pickling solution, it is intended to provide an electrolytic pickling solution of an austenitic stainless steel cold rolled steel sheet which exhibits excellent pickling properties during electrolytic pickling after pre-scale treatment of austenitic stainless steel cold rolled sheet in molten salt. There is this.

상기한 목적을 달성하기 위한 본 발명은 산화성 분위기에서 소둔열처리된 오스테나이트계 스텐레스 냉연강판을 용융염에서 예비탈스케일 처리를 한 후 전해산세시 이에 사용되는 용액에 있어서, 중량%로 질산: 5-8%, 불산: 2-5% 및 0.01-0.02%의 염화철(FeCl3): 0.01-0.02% 또는 포테시움 몰리브데이트(K2M0O4): 0.01-0.2%를 함유하여 조성되는 오스테나이트계 스텐레스 냉연소둔강판의 전해산세액에 관한 것을 그 요지로 한다.The present invention for achieving the above object is a pre-descaled austenitic stainless steel cold-rolled steel sheet subjected to annealing in an oxidizing atmosphere in the molten salt, and then in the solution used for electrolytic pickling, nitric acid by weight%: 5- 8%, hydrofluoric acid: 2-5% and 0.01-0.02% ferric chloride (FeCl 3 ): 0.01-0.02% or fortesium molybdate (K 2 M 0 O 4 ): 0.01-0.2% The summary relates to the electrolytic pickling solution of an austenitic stainless steel.

Description

요스테나이트계 스텐레스 냉연소둔강판의 전해산세액Electrolytic Acid Washing Solution of Stainless Steel Cold Rolled Annealed Steel Sheet

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 음극 및 양극반응 억제제의 첨가시 음극 및 양극분극 곡선의 변화를 나타내는 모식도.1 is a schematic diagram showing the change of the negative electrode and the positive polarization curve when the negative electrode and the anodic reaction inhibitor is added.

Claims (2)

산화성 분위기에서 소둔열처리된 오스테나이트계 스텐레스 냉연강판을 용융염에서 예비탈스케일 처리를 한 후 전해산세시, 이에 사용되는 용액에 있어서, 중량%로 질산: 5-8%, 불산: 2-5%, 염화철(FeCl3): 0.01-0.02% 및 잔부: 순수로 조성됨을 특징으로 오스테나이트계 스텐레스 냉연소둔강판의 전해산세액Pre-descaled austenitic stainless cold rolled steel sheet subjected to annealing in an oxidizing atmosphere in molten salt, followed by electrolytic pickling, in a solution used for this in weight% nitric acid: 5-8%, hydrofluoric acid: 2-5% , Iron chloride (FeCl 3 ): 0.01-0.02% and the balance: pure acid electrolytic pickling solution of austenitic stainless steel cold-rolled annealed steel sheet 산화성 분위기에서 소둔열처리된 오스테나이트계 스텐레스 냉연강판을 용융염에서 예비탈스케일 처리를 한 후 전해산세시, 이에 사용되는 용액에 있어서, 중량%로 질산: 5-8%, 불산: 2-5%, 포테시움 몰리브데이트(K2MOO4): 0.01-0.02% 및 잔부: 순수로 조성됨을 특징으로 하는 오스테나이트계 스텐레스 냉연소둔강판의 전해산세액 .Pre-descaled austenitic stainless cold rolled steel sheet subjected to annealing in an oxidizing atmosphere in molten salt, followed by electrolytic pickling, in a solution used for this in weight% nitric acid: 5-8%, hydrofluoric acid: 2-5% , Electrolytic acid wash of austenitic stainless steel cold-rolled and annealed steel sheet, characterized in that the composition of forteium molybdate (K 2 MOO 4 ): 0.01-0.02% and the balance: pure water.
KR1019950048480A 1995-12-11 1995-12-11 Electrolytic pickling solution for cold annealed austenitic stainless steel sheet KR100368207B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950048480A KR100368207B1 (en) 1995-12-11 1995-12-11 Electrolytic pickling solution for cold annealed austenitic stainless steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950048480A KR100368207B1 (en) 1995-12-11 1995-12-11 Electrolytic pickling solution for cold annealed austenitic stainless steel sheet

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KR970043339A true KR970043339A (en) 1997-07-26
KR100368207B1 KR100368207B1 (en) 2003-05-09

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KR101290421B1 (en) 2009-08-21 2013-07-26 주식회사 포스코 The annealing-pickling method for cold rolled stainless steel
KR102006217B1 (en) 2018-02-23 2019-08-02 주식회사 옻향 Knee chair combined desk for teaching tools

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62294200A (en) * 1986-06-12 1987-12-21 Kawasaki Steel Corp Method for electrolytically pickling cold rolled and annealed stainless steel strip

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