CN105586600A - Duplex stainless steel cold rolling annealing and pickling process - Google Patents
Duplex stainless steel cold rolling annealing and pickling process Download PDFInfo
- Publication number
- CN105586600A CN105586600A CN201610149729.4A CN201610149729A CN105586600A CN 105586600 A CN105586600 A CN 105586600A CN 201610149729 A CN201610149729 A CN 201610149729A CN 105586600 A CN105586600 A CN 105586600A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- phase stainless
- double
- annealing
- steel coil
- 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
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
- C23F17/00—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
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
- C23G1/086—Iron or steel solutions containing HF
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a duplex stainless steel cold rolling annealing and pickling process and belongs to the technical field of duplex stainless steel smelting. The process comprises the following steps: respectively connecting stainless steel rolls with annealing temperature approximating to the annealing temperature of duplex stainless steel to the front end and the rear end of the duplex stainless steel; setting process speed, calculating TV value according to the thickness and the process speed of the steel rolls, setting the hearth temperature of each region according to the TV value and carrying out annealing on the steel rolls; and then carrying out Na2SO4 electrolysis, HNO3 electrolysis, scrubbing, pickling with mixed acid and washing with desalted water on the stainless steel rolls after annealing, and finally cutting off the stainless steel rolls at the front end and the rear end of the duplex stainless steel roll, thus obtaining the duplex stainless steel roll finished products. According to the invention, by using proper annealing and pickling processes, the problems that black strips appear on the rear surface of the duplex stainless steel after pickling and width shrinking and thickness reduction are easy to cause are solved, an oxidation film on the surface of the duplex stainless steel is completely removed, the surface glossiness of the steel rolls is high, and the quality requirements of products can be met.
Description
Technical field
The invention belongs to two phase stainless steel technical field of smelting, be specifically related to the cold rolled annealed acid cleaning process of a kind of two phase stainless steel.
Background technology
Two phase stainless steel refers to that ferrite and austenite respectively account for 50%, and the content of generally looking younger needs to reach 30% stainless steel at least. Lower containing C in the situation that, Cr content is 18-28%, and Ni content is 3-10%. Its oxide skin complex structure, when cold rolling, annealing and pickling are the key links that affects properties of product and surface quality. Wherein acid cleaning process rationally whether, directly have influence on the surface quality of product, and restricted to a certain extent manufacturing schedule; And annealing temperature has material impact to the mechanical property of two phase stainless steel, along with the raising of annealing temperature, the intensity of two phase stainless steel reduces, and easily produces the wide and reduced thickness problem that contracts.
While using cold rolled annealed acid cleaning process of the prior art to carry out two phase stainless steel production, mainly there is following problem: (1) is for ensureing pickling quality, conventionally selected lower process speed, cause being with steel longer in the annealing furnace time of staying, the different surperficial zones of different roughness differences that cause after pickling of pickling complexity of the oxide skin generating with ferritic phase due to top layer austenite, and there is the black stripe that is difficult to get rid of (Fig. 1) along rolling direction in a large number at belt steel surface, and in order to eliminate band tissue, often band steel need be carried out to multipass pickling, (2) when production thickness is the product of 1.5mm and following specification thereof, contract wide serious with reduced thickness, finally cause product to cut useless amount greatly, lumber recovery is low.
Summary of the invention
The object of this invention is to provide the cold rolled annealed acid cleaning process of a kind of two phase stainless steel, to solve the problem of the surface acid-washing that exists of two phase stainless steel bad and contract wide and reduced thickness in cold rolled annealed acid cleaning process, ensure product surface quality and dimensionally stable, reduce pickling number of times, reduce production costs.
The cold rolled annealed acid cleaning process of two phase stainless steel of the present invention, comprises the following steps:
A. connect respectively the stainless-steel roll that annealing temperature is close with two phase stainless steel annealing temperature in double-phase stainless steel coil front-end and back-end, to realize continuous production;
B. setting process speed is 30-40m/min, according to double-phase stainless steel coil thickness and process speed, calculate TV value (thickness × process speed), the fire box temperature (table 1) of then setting each annealed zone according to TV value according to annealing curve is carried out the annealing operation of double-phase stainless steel coil;
The fire box temperature in each district when two phase stainless steel is annealed under table 1 different TV value (DEG C)
C. the double-phase stainless steel coil after annealing is carried out to Na2SO4Electrolysis, to dissolve the chromated oxide on coil of strip surface, destroys the oxide-film of coil of strip surface compact and makes follow-up acid pickling step remove the larger effect of performance aspect coil of strip surface film oxide, wherein Na2SO4The proportion of solution is 1.15-1.20g/cm3, temperature 65-75 DEG C, pH value is 3-5, Faradaic current 100-200A
/cm2, electrolytic speed 10-30m/min;
D. double-phase stainless steel coil in c is proceeded to HNO3Electrolysis, utilizes electrochemical action to make oxide-film ionization, to strengthen pickling effect, and wherein HNO3The concentration of solution is 110-150g/L, temperature 55-60 DEG C, Faradaic current 100-200A/cm2, electrolytic speed 10-30m/min;
E. adopt scrubbing unit that two phase stainless steel in d is scrubbed, to remove double-phase stainless steel coil surface partial oxide film, reduce pickling section burden, improve coil of strip surface smoothness simultaneously; Scrubbing unit electric current is 0.5-1.8A;
F. the double-phase stainless steel coil after scrubbing in e is carried out to nitration mixture pickling, to remove the oxide-film on coil of strip surface completely, make coil of strip surface produce one deck passivating film with protection coil of strip surface simultaneously, wherein acid washing conditions is: pickling medium HNO3+ HF, temperature 55-60 DEG C, HNO3Concentration 140-170g/L, HF concentration 35-45g/L, concentration of metal ions < 30g/L, pickling speed 10-30m/min;
G. double-phase stainless steel coil in f is washed, to remove the nitration mixture of coil of strip remained on surface, prevented overpickling and affect coil of strip surface quality, washing condition is: washing medium desalted water, temperature 45-60 DEG C, washing speed 10-30m/min;
H. the stainless-steel roll that cuts away the connection of double-phase stainless steel coil front-end and back-end obtains double-phase stainless steel coil finished product.
Two phase stainless steel in step a-h of the present invention is 2205 cold rolling two phase stainless steels.
The present invention, than prior art, has following beneficial effect:
(1) the present invention is by Na2SO4The electrolysis of solutions, HNO3Electrolysis and nitration mixture pickling combine, improve pickling efficiency, solved the problem that black stripe appears in two phase stainless steel pickling rear surface, removed the oxide-film on two phase stainless steel surface completely, coil of strip surface gloss is high, has reached the quality requirement of 2205 two-phase stainless product made from steel;
(2) the present invention is provided with suitable process speed according to two phase stainless steel coil of strip thickness, and obtain thus TV value, then set the fire box temperature of each annealed zone according to annealing curve according to TV value, ensure stable annealing temperature, thereby solve easily contract wide and problem reduced thickness of two phase stainless steel coil of strip, and made two phase stainless steel coil of strip surface form uniform oxide-film.
Brief description of the drawings
Fig. 1 is for using cold rolled annealed acid cleaning process 2205 two phase stainless steel schematic surfaces after treatment in prior art.
Fig. 2 is for using cold rolled annealed acid cleaning process 2205 two phase stainless steel schematic surfaces after treatment in the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
Thickness is cold rolling hard state 2205 two phase stainless steel annealing and pickling techniques of 1.0mm, comprises the following steps:
A. connect respectively 304 austenite stainless coil of strips in double-phase stainless steel coil front-end and back-end;
B. setting process speed is 30m/min, and obtaining TV value is 30, sets each annealing burner hearth district temperature as shown in table 2 below according to TV value according to annealing curve:
The fire box temperature in each district when the two phase stainless steel that table 2TV value is 30 is annealed (DEG C)
C. the stainless-steel roll after annealing is carried out to Na2SO4Electrolysis, Na2SO4Solution proportion 1.15g/cm3, temperature 70 C, pH value is 5, Faradaic current 100A/cm2, electrolytic speed 20m/min;
D. double-phase stainless steel coil in c is proceeded to HNO3Electrolysis, HNO3Concentration is 130g/L, temperature 60 C, Faradaic current 100A/cm2, electrolytic speed 20m/min;
E. adopt scrubbing unit to scrub double-phase stainless steel coil in d, scrubbing unit electric current is 1.5A;
F. the double-phase stainless steel coil after scrubbing in e is carried out to nitration mixture pickling, pickling medium HNO3+ HF, temperature 60 C, HNO3Concentration is 160g/L, HF concentration 40g/L, and concentration of metal ions is 10g/L, pickling speed 20m/min;
G. double-phase stainless steel coil in f is carried out to desalted water washing, temperature 50 C, washing speed 20m/min;
H. the 304 austenite stainless coil of strips that cut away double-phase stainless steel coil front-end and back-end, can obtain double-phase stainless steel coil finished product, and its surface gloss is high, and without black stripe defect, width and thickness are stablized (Fig. 2), have reached the quality requirement of 2205 two phase stainless steels.
Embodiment 2
Thickness is cold rolling hard state 2205 two phase stainless steel annealing and pickling techniques of 0.5mm, comprises the following steps:
A. connect respectively 309S austenite stainless coil of strip in double-phase stainless steel coil front-end and back-end;
B. setting process speed is 40m/min, and obtaining TV value is 20, sets each district temperature as shown in table 3 below according to TV value:
The fire box temperature in each district when the two phase stainless steel that table 3TV value is 20 is annealed (DEG C)
C. the stainless-steel roll after annealing is carried out to Na2SO4Electrolysis, Na2SO4Solution proportion 1.15g/cm3, 65 DEG C of temperature, pH value is 3, Faradaic current 120A/cm2, electrolytic speed 10m/min;
D. double-phase stainless steel coil in c is proceeded to HNO3Electrolysis, HNO3Solution concentration is 110g/L, 55 DEG C of temperature, Faradaic current 120A/cm2, electrolytic speed 10m/min;
E. adopt scrubbing unit to scrub double-phase stainless steel coil in d, scrubbing unit electric current is 0.5A;
F. the double-phase stainless steel coil after scrubbing in e is carried out to nitration mixture pickling, pickling medium HNO3+ HF, 55 DEG C of temperature, HNO3Concentration is 140g/L, HF concentration 35g/L, and pickling speed 30m/min, concentration of metal ions is 20g/L;
G. double-phase stainless steel coil in f is carried out to desalted water washing, temperature 45 C, washing speed 30m/min;
H. cut away the 309S austenite stainless coil of strip of double-phase stainless steel coil front-end and back-end, can obtain double-phase stainless steel coil finished product, its surface gloss is high, and without black stripe defect, width and thickness are stablized (Fig. 2), have reached the quality requirement of 2205 two phase stainless steels.
Embodiment 3
The present embodiment annealing and pickling be that thickness is the cold rolling hard state 2205 two phase stainless steel coil of strips of 1.5mm, comprise the following steps:
A. connect respectively 310S austenite stainless coil of strip in double-phase stainless steel coil front-end and back-end;
B. setting process speed is 40m/min, and obtaining TV value is 60, sets each district temperature as shown in table 4 below according to TV value:
The fire box temperature in each district when the two phase stainless steel that table 4TV value is 60 is annealed (DEG C)
C. the stainless-steel roll after annealing is carried out to Na2SO4Electrolysis, Na2SO4Solution proportion 1.15g/cm3, 75 DEG C of temperature, pH value is 4, Faradaic current 200A/cm2, electrolytic speed 30m/min;
D. double-phase stainless steel coil in c is proceeded to HNO3Electrolysis, HNO3Solution concentration is 150g/L, temperature 60 C, Faradaic current 200A/cm2, electrolytic speed 30m/min;
E. adopt scrubbing unit to scrub double-phase stainless steel coil in d, scrubbing unit electric current is 1.8A;
F. the double-phase stainless steel coil after scrubbing in e is carried out to nitration mixture pickling, pickling medium HNO3+ HF, 58 DEG C of temperature, HNO3Concentration 170g/L, HF concentration 45g/L, pickling speed 10m/min, concentration of metal ions is 15g/L;
G. double-phase stainless steel coil in f is carried out to desalted water washing, temperature 60 C, washing speed 10m/min;
H. cut away the 310S austenite stainless coil of strip of double-phase stainless steel coil front-end and back-end, can obtain double-phase stainless steel coil finished product, its surface gloss is high, and without black stripe defect, width and thickness are stablized (Fig. 2), have reached the quality requirement of 2205 two phase stainless steels.
Claims (3)
1. the cold rolled annealed acid cleaning process of two phase stainless steel, is characterized in that: comprise the following steps:
A. connect respectively the stainless-steel roll that annealing temperature is close with two phase stainless steel annealing temperature in double-phase stainless steel coil front-end and back-end;
B. setting process speed is 30-40m/min, according to double-phase stainless steel coil thickness and process speed, calculates TV value; Then carry out the annealing operation of double-phase stainless steel coil in a according to the fire box temperature of each annealed zone of TV value setting;
C. the double-phase stainless steel coil after annealing is carried out to Na2SO4Electrolysis, Na2SO4The proportion of solution is 1.15-1.20g/cm3, temperature 65-75 DEG C, pH value 3-5; Faradaic current 100-200A/cm2, electrolytic speed 10-30m/min;
D. double-phase stainless steel coil in c is proceeded to HNO3Electrolysis, HNO3The concentration of solution is 110-150g/L, temperature 55-60 DEG C; Faradaic current 100-200A/cm2, electrolytic speed 10-30m/min;
E. double-phase stainless steel coil in d is scrubbed;
F. the double-phase stainless steel coil after scrubbing in e is carried out to nitration mixture pickling, acid washing conditions is: pickling medium HNO3+ HF, temperature 55-60 DEG C, HNO3Concentration 140-170g/L, HF concentration 35-45g/L; Concentration of metal ions < 30g/L, pickling speed 20-30m/min;
G. double-phase stainless steel coil in f is washed, washing condition is: washing medium desalted water, temperature 45-60 DEG C, washing speed 10-30m/min;
H. the stainless-steel roll that cuts away the connection of double-phase stainless steel coil front-end and back-end obtains double-phase stainless steel coil finished product.
2. the cold rolled annealed acid cleaning process of a kind of two phase stainless steel according to claim 1, is characterized in that: in step e, adopt scrubbing unit to carry out scrubbing of double-phase stainless steel coil, scrubbing electric current is 0.5-1.8A.
3. the cold rolled annealed acid cleaning process of a kind of two phase stainless steel according to claim 1, is characterized in that: the described two phase stainless steel in step a-h is 2205 cold rolling two phase stainless steels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149729.4A CN105586600B (en) | 2016-03-16 | 2016-03-16 | A kind of cold rolled annealed acid cleaning process of two phase stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610149729.4A CN105586600B (en) | 2016-03-16 | 2016-03-16 | A kind of cold rolled annealed acid cleaning process of two phase stainless steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105586600A true CN105586600A (en) | 2016-05-18 |
| CN105586600B CN105586600B (en) | 2018-06-29 |
Family
ID=55926495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610149729.4A Active CN105586600B (en) | 2016-03-16 | 2016-03-16 | A kind of cold rolled annealed acid cleaning process of two phase stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105586600B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142513A (en) * | 2017-05-09 | 2017-09-08 | 张家港浦项不锈钢有限公司 | High chrome high-nickel stainless-steel cold-rolling annealing and pickling technique |
| CN108977874A (en) * | 2018-09-18 | 2018-12-11 | 张家港浦项不锈钢有限公司 | A kind of two phase stainless steel annealing and pickling method |
| CN110814032A (en) * | 2019-10-18 | 2020-02-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Cold rolling method for 2B surface 439 ferritic stainless steel |
| CN111057935A (en) * | 2019-12-25 | 2020-04-24 | 浦项(张家港)不锈钢股份有限公司 | Preparation method of heat-resistant stainless steel |
| CN112323075A (en) * | 2020-09-28 | 2021-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Solid solution pickling process for S32750 super duplex stainless steel medium plate |
| CN114045378A (en) * | 2021-10-18 | 2022-02-15 | 山西太钢不锈钢股份有限公司 | Method for improving surface cleanliness of heat-resistant steel |
| CN114086188A (en) * | 2021-10-18 | 2022-02-25 | 山西太钢不锈钢股份有限公司 | Method for improving pickling effect of stainless steel of wide and thick cold plate |
| CN115287419A (en) * | 2022-07-20 | 2022-11-04 | 山西太钢不锈钢股份有限公司 | Annealing and pickling process method of high-temperature-resistant austenitic stainless steel cold-rolled strip steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165223A (en) * | 2007-08-15 | 2008-04-23 | 山西太钢不锈钢股份有限公司 | Acid pickling method for stainless steel surface |
| CN101487099A (en) * | 2009-02-20 | 2009-07-22 | 山西太钢不锈钢股份有限公司 | Corrosion resistant steel plate for automobile fuel tank and manufacturing method thereof |
| CN101676435A (en) * | 2008-09-19 | 2010-03-24 | 宝山钢铁股份有限公司 | Production technology for ferrite stainless-steel grinding object with low cost and high corrosion resistance capability |
| CN101709477A (en) * | 2009-11-28 | 2010-05-19 | 山西太钢不锈钢股份有限公司 | Method for continuous pickling of double-phase stainless steel coil |
| CN102965718A (en) * | 2011-09-01 | 2013-03-13 | 瑞研材料科技股份有限公司 | Method for removing stainless steel scale |
| CN103243339A (en) * | 2013-04-16 | 2013-08-14 | 山西太钢不锈钢股份有限公司 | Continuous annealing and acid washing method for medium-chromium ultrapure ferrite stainless steel |
-
2016
- 2016-03-16 CN CN201610149729.4A patent/CN105586600B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101165223A (en) * | 2007-08-15 | 2008-04-23 | 山西太钢不锈钢股份有限公司 | Acid pickling method for stainless steel surface |
| CN101676435A (en) * | 2008-09-19 | 2010-03-24 | 宝山钢铁股份有限公司 | Production technology for ferrite stainless-steel grinding object with low cost and high corrosion resistance capability |
| CN101487099A (en) * | 2009-02-20 | 2009-07-22 | 山西太钢不锈钢股份有限公司 | Corrosion resistant steel plate for automobile fuel tank and manufacturing method thereof |
| CN101709477A (en) * | 2009-11-28 | 2010-05-19 | 山西太钢不锈钢股份有限公司 | Method for continuous pickling of double-phase stainless steel coil |
| CN102965718A (en) * | 2011-09-01 | 2013-03-13 | 瑞研材料科技股份有限公司 | Method for removing stainless steel scale |
| CN103243339A (en) * | 2013-04-16 | 2013-08-14 | 山西太钢不锈钢股份有限公司 | Continuous annealing and acid washing method for medium-chromium ultrapure ferrite stainless steel |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107142513A (en) * | 2017-05-09 | 2017-09-08 | 张家港浦项不锈钢有限公司 | High chrome high-nickel stainless-steel cold-rolling annealing and pickling technique |
| CN107142513B (en) * | 2017-05-09 | 2019-04-16 | 张家港浦项不锈钢有限公司 | High chrome high-nickel stainless-steel cold-rolling annealing and pickling technique |
| CN108977874A (en) * | 2018-09-18 | 2018-12-11 | 张家港浦项不锈钢有限公司 | A kind of two phase stainless steel annealing and pickling method |
| CN108977874B (en) * | 2018-09-18 | 2021-01-26 | 浦项(张家港)不锈钢股份有限公司 | Annealing and pickling method for duplex stainless steel |
| CN110814032A (en) * | 2019-10-18 | 2020-02-21 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Cold rolling method for 2B surface 439 ferritic stainless steel |
| CN110814032B (en) * | 2019-10-18 | 2021-11-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Cold rolling method for 2B surface 439 ferritic stainless steel |
| CN111057935A (en) * | 2019-12-25 | 2020-04-24 | 浦项(张家港)不锈钢股份有限公司 | Preparation method of heat-resistant stainless steel |
| CN111057935B (en) * | 2019-12-25 | 2021-04-02 | 浦项(张家港)不锈钢股份有限公司 | Preparation method of heat-resistant stainless steel |
| CN112323075A (en) * | 2020-09-28 | 2021-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Solid solution pickling process for S32750 super duplex stainless steel medium plate |
| CN114045378A (en) * | 2021-10-18 | 2022-02-15 | 山西太钢不锈钢股份有限公司 | Method for improving surface cleanliness of heat-resistant steel |
| CN114086188A (en) * | 2021-10-18 | 2022-02-25 | 山西太钢不锈钢股份有限公司 | Method for improving pickling effect of stainless steel of wide and thick cold plate |
| CN115287419A (en) * | 2022-07-20 | 2022-11-04 | 山西太钢不锈钢股份有限公司 | Annealing and pickling process method of high-temperature-resistant austenitic stainless steel cold-rolled strip steel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105586600B (en) | 2018-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105586600A (en) | Duplex stainless steel cold rolling annealing and pickling process | |
| CN108977874B (en) | Annealing and pickling method for duplex stainless steel | |
| RU2746876C1 (en) | System and method for continuous production of cold-rolled stainless steel sheets | |
| CN203593791U (en) | Continuous processing system for pure titanium belts | |
| CN103433319B (en) | A kind of manufacture method of stainless steel Side fascia used for rail vehicle | |
| CN101214496A (en) | Method of manufacturing metal composite plate for cutting tool | |
| CN109628708B (en) | Environment-friendly and energy-saving stainless steel strip annealing and pickling method | |
| CN103320803B (en) | Strip buck souring | |
| CN103521518A (en) | Hot continuous rolling production method of stainless steel composite board strip coil | |
| CN105154900A (en) | High-chromium austenitic stainless steel surface acid pickling method | |
| CN104032318B (en) | A kind of 409L cold rolled strip annealing and pickling production method | |
| CN106269963A (en) | The production method of titanium steel composite board | |
| CN104593857A (en) | Ferrite stainless steel processing method | |
| CN102337547B (en) | Pickling method for hot rolled double-phase stainless steel plates | |
| CN102899672A (en) | Continuous pickling method for super austenitic stainless steel coil | |
| CN103882505A (en) | Hot-rolled 409L ultra-pure ferrite stainless band steel annealing and acid-pickling production method | |
| CN113201636A (en) | Method for producing ultrapure ferrite stainless steel by continuous rolling annealing | |
| CN105032974B (en) | The production method of zirconium and zircaloy band volume | |
| CN103801580B (en) | Galvanized all-hard plate cold rolling edge crack control method considering plate shape | |
| CN104047001A (en) | 409L cold-rolled strip steel annealing-pickling production process | |
| CN103921059B (en) | A kind of low acid consumption cold-rolled steel strip products production method | |
| CN108031717A (en) | A kind of pickling phosphorus removing method of Cold-strip Steel Surface | |
| CN116371935A (en) | Control method for improving 301H stainless steel plate shape | |
| CN103921067B (en) | A kind of low acid consumption great surface quality cold-rolled products production method | |
| CN103920710B (en) | A kind of anti-corrosion cold-rolled products production method of low consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |