KR950014377A - Descaling method of martensitic stainless steel - Google Patents

Descaling method of martensitic stainless steel Download PDF

Info

Publication number
KR950014377A
KR950014377A KR1019930025027A KR930025027A KR950014377A KR 950014377 A KR950014377 A KR 950014377A KR 1019930025027 A KR1019930025027 A KR 1019930025027A KR 930025027 A KR930025027 A KR 930025027A KR 950014377 A KR950014377 A KR 950014377A
Authority
KR
South Korea
Prior art keywords
stainless steel
martensitic stainless
pickling
sulfuric acid
acid solution
Prior art date
Application number
KR1019930025027A
Other languages
Korean (ko)
Other versions
KR960004787B1 (en
Inventor
류승기
김기돈
최문순
Original Assignee
조말수
포항종합제철 주식회사
백덕현
재단법인산업과학기술연구소
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 조말수, 포항종합제철 주식회사, 백덕현, 재단법인산업과학기술연구소 filed Critical 조말수
Priority to KR1019930025027A priority Critical patent/KR960004787B1/en
Publication of KR950014377A publication Critical patent/KR950014377A/en
Application granted granted Critical
Publication of KR960004787B1 publication Critical patent/KR960004787B1/en

Links

Classifications

    • 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
    • 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
    • C21D2211/008—Martensite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

본 발명은 마르텐사이트계 스테인레스열연강대를 황산수용액에서 전해산세하여 표면스케일을 제거하는 방법을 제공하고자 하는데 그 목적이 있다.An object of the present invention is to provide a method for removing surface scale by electrolytic pickling a martensitic stainless steel strip in an aqueous sulfuric acid solution.

본 발명은 마르텐사이트계 스테인레스강대의 스케일 제거방법에 있어서, 200-300g/ℓ농도의 황산수용액을 산세액으로 하여, 전류밀도 : 5-20A/d㎡, 전해시간 2-3분으로 상온에서 전해산세하는 것을 특징으로 하는 마르텐사이트계 스텐레스강태의 스케일 제거방법에 관한 것을 그 요지로 한다.According to the present invention, in the method for descaling martensitic stainless steel strips, a sulfuric acid solution having a concentration of 200-300 g / l is used as a pickling solution, and is electrolyzed at room temperature with a current density of 5-20 A / dm 2 and an electrolysis time of 2-3 minutes. The gist of the scale removal method of martensitic stainless steel characterized by the above-mentioned pickling is made into the summary.

본 발명은 마르텐사이트계 스테인레스강의 열연·소둔강대를 황산수용액에서 전해 산세함으로써 종래의 방법보다 간편하고 능률적으로 스테인레스 표면스케일을 제거할 수 있는 효과가 있다.The present invention has the effect of removing the stainless surface scale more simply and efficiently than the conventional method by electrolytic pickling the hot rolled and annealed steel strip of martensitic stainless steel in an aqueous sulfuric acid solution.

Description

마르텐사이트계 스테인레스강대의 스케일 제거방법Descaling method of martensitic stainless steel

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

Claims (2)

마르텐사이트계 스테인레스강대의 스케일 제거방법에 있어서, 200-300g/l 농도의 황산 수용액을 산세액으로 하며, 전류밀도 : 5-20A/dm2, 전해시간 2-3분으로 상온에서 전해 산세하는 것을 특징으로 하는 마르텐사이트계 스테인레스강대의 스케일 제거방법.In the descaling method of martensitic stainless steel strips, the sulfuric acid solution of 200-300g / l concentration is used as the pickling solution, and electrolytic pickling at room temperature with a current density of 5-20A / dm 2 and an electrolysis time of 2-3 minutes. Descaling method of martensitic stainless steel. 제1항에 있어서, 마르텐사이트계 스테인레스강대가 SUS 420JZ인 것을 특징으로 하는 마르텐사이트계 스테인레스의 스케일 제거방법.The method for removing scale of martensitic stainless steel according to claim 1, wherein the martensitic stainless steel strip is SUS 420JZ. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930025027A 1993-11-23 1993-11-23 Method for removing a scale of martensite stainless steel strips KR960004787B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930025027A KR960004787B1 (en) 1993-11-23 1993-11-23 Method for removing a scale of martensite stainless steel strips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930025027A KR960004787B1 (en) 1993-11-23 1993-11-23 Method for removing a scale of martensite stainless steel strips

Publications (2)

Publication Number Publication Date
KR950014377A true KR950014377A (en) 1995-06-16
KR960004787B1 KR960004787B1 (en) 1996-04-13

Family

ID=19368752

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930025027A KR960004787B1 (en) 1993-11-23 1993-11-23 Method for removing a scale of martensite stainless steel strips

Country Status (1)

Country Link
KR (1) KR960004787B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110747481A (en) * 2018-07-23 2020-02-04 太原天择金属表面技术有限责任公司 Method for removing oxide skin on surface of hot-rolled nickel stainless steel
CN112430714A (en) * 2020-09-27 2021-03-02 甘肃酒钢集团宏兴钢铁股份有限公司 Annealing process of 04Cr13Ni5Mo hydroelectric super martensitic stainless steel medium plate
KR20220077472A (en) * 2020-12-02 2022-06-09 주식회사 포스코 Stainless steel electrolytic pickling method using highly conductive sulfuric acid solution

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101064407B1 (en) * 2004-03-12 2011-09-14 주식회사 포스코 Stainless hot coil strip improving the pickling rate
KR102179303B1 (en) 2018-10-25 2020-11-16 주식회사 포스코 Scale removing apparatus and method for low chromium ferritic stainless steel hot-rolled steel sheet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110747481A (en) * 2018-07-23 2020-02-04 太原天择金属表面技术有限责任公司 Method for removing oxide skin on surface of hot-rolled nickel stainless steel
CN112430714A (en) * 2020-09-27 2021-03-02 甘肃酒钢集团宏兴钢铁股份有限公司 Annealing process of 04Cr13Ni5Mo hydroelectric super martensitic stainless steel medium plate
KR20220077472A (en) * 2020-12-02 2022-06-09 주식회사 포스코 Stainless steel electrolytic pickling method using highly conductive sulfuric acid solution

Also Published As

Publication number Publication date
KR960004787B1 (en) 1996-04-13

Similar Documents

Publication Publication Date Title
ATE4602T1 (en) METHOD OF PREPARING STAINLESS STEEL FOR DIRECT GOLD PLATING.
KR960003832A (en) Annealing and Descaling Methods of Stainless Steel
BR9708936A (en) Stripping process for steel and in particular stainless steel
KR950014377A (en) Descaling method of martensitic stainless steel
BR0312566A (en) Procedure and device for recycling metal pickling baths
KR830009272A (en) Surface removal method in electrolyte without acid using high current density
KR830001414A (en) Expression formation method by anode polarization to prevent biological contamination and scale
DK0801154T3 (en) Process for machining the outer surface made of copper or copper alloy of an element to a
DE3870869D1 (en) METHOD FOR TREATING COLD ROLLED STAINLESS STEEL SHEET AND STEEL STRIP.
ATE206490T1 (en) DEVICE FOR PICKLING LONG, CONTINUOUS GOODS TO BE TREATED
ATE51423T1 (en) PROCESSES TO FACILITATE THE COLD FORMING OF STAINLESS STEEL.
KR840006377A (en) How to remove titanium nitride film
ATE50004T1 (en) PROCESS FOR PRODUCTION OF COLD ROLLED STEEL STRIP HIGHLY SENSITIVE TO TRANSFORMATION TREATMENT.
DE59601506D1 (en) METHOD FOR DE-METALIZING HIGH-ACID BATHS AND USE OF THIS METHOD IN ELECTROPOLISHING STAINLESS STEEL SURFACES
ATE70201T1 (en) USE OF CITRIC ACID PARTIAL ESTERS AND THEIR MIXTURES FOR IRON EXTRACTION.
MX169547B (en) SURGICAL NEEDLE AND METHOD FOR ITS MANUFACTURE
JPS55141596A (en) Improvement of soldering property of cold rolled stainless steel strip treated by bright annealing
KR940014922A (en) Electrolytic pickling method of austenitic stainless steel
Maresch et al. Method of Electrolytically Pickling Special Steel
JPS558487A (en) Surface treating method of copper
NO863301L (en) ELECTROLYTE FOR USE BY ANODICALLY OXIDATION DEVICE.
JPS5524947A (en) Formation of nontransparent anodic oxide film in aluminium-clad material
JPS56133489A (en) Surface treatment for anodized film of aluminum or aluminum alloy
GB299923A (en) Improvements in and connected with screw propellers and the like
JPS5562196A (en) Surface treating method of aluminum or aluminum alloy

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20010327

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee