CN103100562A - Method of machining special passivated stainless steel surface - Google Patents
Method of machining special passivated stainless steel surface Download PDFInfo
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- CN103100562A CN103100562A CN2011103514198A CN201110351419A CN103100562A CN 103100562 A CN103100562 A CN 103100562A CN 2011103514198 A CN2011103514198 A CN 2011103514198A CN 201110351419 A CN201110351419 A CN 201110351419A CN 103100562 A CN103100562 A CN 103100562A
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- controlled
- cold rolling
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- 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
- 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
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/34—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 containing fluorides or complex fluorides
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Lubricants (AREA)
Abstract
The invention relates to a method of machining a special passivated stainless steel surface. The method includes a first step of cold rolling raw materials, rolling by adopting roller with 2.0 micrometers to 3.0 micrometers of roughness Ra, controlling cold rolling reduction rate within 5% to 10%, controlling rolling lubrication oil amount within 2000 liters per minute to 4000 liters per minute, a second step of passivating cold rolled materials, conducting annealing and pickling on cold rolled surfaces, controlling furnace temperature of an annealing furnace within 350 DEG C to 550 DEG C, controlling ratio of acid liquid in an acid groove to be 10 grams per liter to 25 grams per liter of hydrofluoric acid (HF) to 80 grams per liter to 200 gram per liter of hydrogen nitrate (HNO3), controlling pickling passivation temperature within 40 DEG C to 60 DEG C, and controlling running speed within 25 meters per minute to 40 meters per minute. Due to the facts that machining is conducted with the help of devices in a stainless steel enterprise and similar products are produced without need of additionally configuring a surface coating production line, production cost is greatly saved. Due to the fact that production technology process is relatively simple and controllable, production efficiency is high. Due to the fact that corrosion resistance of the surfaces which are pickled and passivated is greatly improved, stability is good.
Description
Technical field
The present invention relates to the processing method of the special passivated surface of a kind of stainless steel.
Background technology
In the product category of stainless steel cold-rolled plate, the one higher special surface of class production difficulty is arranged, require surface roughness and glossiness to control simultaneously, such as in the rail vehicle industry, the material surface roughness that is used as Side fascia requires to be controlled at 0.8-1.2um (micron), glossiness (60.) require between 25-45.In the past by the materials of external import, on production technology, all generally rolling with dull roll, and then carry out resin-coating, to control roughness and the glossiness of final products, the shortcoming of this technique is very high to the ratio requirement of resin solution, and speed of production is slow, poor stability, and for traditional stainless steel enterprises, configuration surface coating production line in addition.
Summary of the invention
Technical problem to be solved by this invention is to provide the processing method of the special passivated surface of a kind of stainless steel, has that processing technology is simply controlled, production efficiency is high, the characteristics of corrosion resistance and good.
The present invention solves the problems of the technologies described above the technical scheme that adopts: the processing method of the special passivated surface of a kind of stainless steel is characterized in that step is:
1) carry out cold rolling to raw material: taking roughness Ra is that the roller of 2.0-3.0um is rolled, and cold rolling reduction ratio is controlled at 5-10%, and the rolling lubrication oil mass is controlled at 2000-4000L/Min;
2) cold rolling rear material is carried out passivation: annealing and pickling is carried out on cold rolling good surface, and the furnace temperature of annealing furnace is at 350-550 ℃, and in acid tank, the proportioning of acid solution is HF concentration 10-25g/L, HNO
3Concentration 80-200g/L, the acid wash passivation temperature is controlled at 40～60 ℃, is controlled at 25-40mpm with the speed of service of steel.
At last, described step 1) in, mill speed remains on below 200mpm, and the unit tension of milling train is assigned as, forward pull 16～20kg/mm
2, backward pull is 14～18kg/mm
2
Compared with prior art, the invention has the advantages that: the equipment by stainless steel enterprises inside is processed, and produces like product, and the configuration surface coating production line, saved production cost greatly in addition; And the technological process of production of the present invention is comparatively simply controlled, and production efficiency is high, improve a lot through the erosion of the surface corrosion-resistant after acid wash passivation property in addition, and good stability.
From production efficiency relatively, for use the technique of surperficial application of resin solution on corrosion resistant plate, be generally discontinuous production, spiral-plate processing, hourly output generally be no more than 2 tons/time; And passivation processing technology mentioned in this article, even produce by lowest manufactured speed, hourly output also can reach 25 tons/time more than.
Contrast from the decay resistance of material, for the 301L steel grade, specification is the material of 1.5-2.5mm, be 400 hours the average time of material corrosion under the salt spray test condition that unpassivated is processed, and the average time of material corrosion under same salt spray test condition of process Passivation Treatment was greater than 500 hours.Attached salt spray test condition:
| Test basis | GB-T10125-1997 |
| The salt spray test type | 5% neutral brine spraying |
| The distilled water quality | ≤ 30us/cm goes dried up |
| The NaCL quality | 99.8% analysis is pure |
| Test temperature ℃ | 35±1 |
| Pressure pot temperature ℃ | 47±1 |
| Compressed air pressure | 1.00±0.01kg/c m 2 |
Product surface roughness by this processes is 0.8-1.2um, glossiness (60.) be 25-45, the mechanical properties data yield strength is greater than 550Mpa, and tensile strength is greater than 800Mpa, and percentage elongation is greater than 35%.
The specific embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1
What this example was implemented is that material is the special passivated surface of 301 steel grades, and thickness of slab is 2.0mm, and surface roughness requires to be controlled at 0.8-1.0um, glossiness (60.) require between 25-45.
Concrete implementation step is as follows:
1) carry out cold rolling to raw material:
When milling train was cold rolling, the roughness of roll was controlled at 2.0um, and cold rolling reduction ratio is controlled at 6%, and the rolling lubrication oil mass is controlled at 3500L/Min, and mill speed remains on below 200mpm, and the unit tension of milling train is assigned as, forward pull 18kg/mm
2, backward pull is 16kg/mm
2
2) cold rolling rear material is carried out passivation
When pickling is annealed, set the furnace temperature of annealing furnace at 450 (+/-50 ℃), stove section unit tension is 0.45～0.80kg/mm
2, Acidwash solution proportioning in descaling bath: HF concentration 10-15g/L, HNO
3Concentration 120-150g/L, the acid wash passivation temperature is controlled at 50 (+/-10 ℃), is controlled at 25-30mpm with the speed of service of steel.
Embodiment 2
What this example was implemented is that material is the special passivated surface of 301 steel grades, and thickness of slab is 2.5mm, and surface roughness requires to be controlled at 1.0-1.2um, glossiness (60.) require between 25-45.
Concrete implementation step is as follows:
1) carry out cold rolling to raw material:
When milling train was cold rolling, the roughness of roll was controlled at 2.5um, and cold rolling reduction ratio is controlled at 6.5%, and the rolling lubrication oil mass is controlled at 3000L/Min, and mill speed remains on below 200mpm, and the unit tension of milling train is assigned as, forward pull 18kg/mm
2, backward pull is 16kg/mm
2
2) cold rolling rear material is carried out passivation
When pickling is annealed, set the furnace temperature of annealing furnace at 450 (+/-50 ℃), stove section unit tension is 0.45～0.80kg/mm
2, Acidwash solution proportioning in descaling bath: HF concentration 10-15g/L, HNO
3Concentration 120-150g/L, the acid wash passivation temperature is controlled at 50 (+/-10 ℃), is controlled at 30-40mpm with the speed of service of steel.
Embodiment 3
What this example was implemented is that material is the special passivated surface of 301 steel grades, and thickness of slab is 2.5mm, and surface roughness requires to be controlled at 1.2-1.5um, glossiness (60.) require between 35-55.
Concrete implementation step is as follows:
1) carry out cold rolling to raw material:
When milling train was cold rolling, the roughness of roll was controlled at 3.0um, and cold rolling reduction ratio is controlled at 6%, and the rolling lubrication oil mass is controlled at 2500L/Min, and mill speed remains on below 150mpm, and the unit tension of milling train is assigned as, forward pull 20kg/mm
2, backward pull is 18kg/mm
2
2) cold rolling rear material is carried out passivation
When pickling is annealed, set the furnace temperature of annealing furnace at 450 (+/-50 ℃), stove section unit tension is 0.45～0.80kg/mm
2, Acidwash solution proportioning in descaling bath: HF concentration 15-20g/L, HNO
3Concentration 130-150g/L, the acid wash passivation temperature is controlled at 50 (+/-10 ℃), is controlled at 20-30mpm with the speed of service of steel.
Embodiment 4
What this example was implemented is that material is the special passivated surface of 301 steel grades, and thickness of slab is 1.5mm, and surface roughness requires to be controlled at 1-1.2um, glossiness (60.) require between 30-45.
Concrete implementation step is as follows:
1) carry out cold rolling to raw material:
When milling train was cold rolling, the roughness of roll was controlled at 2.5um, and cold rolling reduction ratio is controlled at 6%, and the rolling lubrication oil mass is controlled at 3000L/Min, and mill speed remains on below 150mpm, and the unit tension of milling train is assigned as, forward pull 20kg/mm
2, backward pull is 18kg/mm
2
2) cold rolling rear material is carried out passivation
When pickling is annealed, set the furnace temperature of annealing furnace at 450 (+/-50 ℃), stove section unit tension is 0.45～0.80kg/mm
2, Acidwash solution proportioning in descaling bath: HF concentration 10-15g/L, HNO
3Concentration 130-150g/L, the acid wash passivation temperature is controlled at 50 (+/-10 ℃), is controlled at 20-30mpm with the speed of service of steel.
Embodiment 5
What this example was implemented is that material is the special passivated surface of 301 steel grades, and thickness of slab is 1.5mm, and surface roughness requires to be controlled at 1.2-1.5um, glossiness (60.) require between 35-50.
Concrete implementation step is as follows:
1) carry out cold rolling to raw material:
When milling train was cold rolling, the roughness of roll was controlled at 3.0um, and cold rolling reduction ratio is controlled at 6%, and the rolling lubrication oil mass is controlled at 2000L/Min, and mill speed remains on below 150mpm, and the unit tension of milling train is assigned as, forward pull 20kg/mm
2, backward pull is 18kg/mm
2
2) cold rolling rear material is carried out passivation
When pickling is annealed, set the furnace temperature of annealing furnace at 450 (+/-50 ℃), stove section unit tension is 0.45～0.80kg/mm
2, Acidwash solution proportioning in descaling bath: HF concentration 15-20g/L, HNO
3Concentration 140-150g/L, the acid wash passivation temperature is controlled at 50 (+/-10 ℃), is controlled at 20-25mpm with the speed of service of steel.
Claims (2)
1. the processing method of the special passivated surface of stainless steel is characterized in that step is:
1) carry out cold rolling to raw material: taking roughness Ra is that the roller of 2.0-3.0um is rolled, and cold rolling reduction ratio is controlled at 5-10%, and the rolling lubrication oil mass is controlled at 2000-4000L/Min;
2) cold rolling rear material is carried out passivation: annealing and pickling is carried out on cold rolling good surface, and the furnace temperature of annealing furnace is at 350-550 ℃, and in acid tank, the proportioning of acid solution is HF concentration 10-25g/L, HNO
3Concentration 80-200g/L, the acid wash passivation temperature is controlled at 40～60 ℃, is controlled at 25-40mpm with the speed of service of steel.
2. processing method according to claim 1, is characterized in that described step 1) in mill speed remain on below 200mpm, the unit tension of milling train is assigned as, forward pull 16～20kg/mm
2, backward pull is 14～18kg/mm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110351419.8A CN103100562B (en) | 2011-11-09 | 2011-11-09 | Method of machining special passivated stainless steel surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110351419.8A CN103100562B (en) | 2011-11-09 | 2011-11-09 | Method of machining special passivated stainless steel surface |
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| CN103100562A true CN103100562A (en) | 2013-05-15 |
| CN103100562B CN103100562B (en) | 2015-04-01 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469193A (en) * | 2013-08-23 | 2013-12-25 | 中核苏阀横店机械有限公司 | Formula of forming pickling passivation solution for surface oxide film of stainless steel casting |
| CN106583215A (en) * | 2016-12-16 | 2017-04-26 | 安徽宝恒新材料科技有限公司 | Method for improving antibacterial capacity of stainless steel |
| CN107604150A (en) * | 2017-08-31 | 2018-01-19 | 河钢股份有限公司邯郸分公司 | Suppress the method for furnace roller of continuous annealing furnace dross |
| CN110592640A (en) * | 2019-10-14 | 2019-12-20 | 安徽豪鼎金属制品有限公司 | Stainless steel surface corrosion-resistant treatment system and treatment method adopting same |
| CN112275804A (en) * | 2020-08-31 | 2021-01-29 | 山西太钢不锈钢精密带钢有限公司 | Control method for surface color difference of precise stainless steel strip |
Citations (7)
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| US5197179A (en) * | 1991-04-18 | 1993-03-30 | T. Sendzimir, Inc. | Means and a method of improving the quality of cold rolled stainless steel strip |
| JPH07303902A (en) * | 1994-05-11 | 1995-11-21 | Nippon Steel Corp | Method for producing high-gloss austenitic stainless steel sheet |
| US5571343A (en) * | 1993-08-25 | 1996-11-05 | Pohang Iron & Steel Co., Ltd. | Austenitic stainless steel having superior press-formability, hot workability and high temperature oxidation resistance, and manufacturing process therefor |
| CN1261563A (en) * | 1999-01-15 | 2000-08-02 | 初显仁 | Centrifugal process for casting oil storage tank |
| CN1318438A (en) * | 2001-06-05 | 2001-10-24 | 宁波宝新不锈钢有限公司 | Cold rolling process of ferrite and martensitic stainless steel belt |
| 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 |
| CN101912874A (en) * | 2010-07-14 | 2010-12-15 | 宁波钢铁有限公司 | Production method of preventing from coiling and pulling narrow of hot-rolled low carbon strip steels used for cold-rolled base plates |
-
2011
- 2011-11-09 CN CN201110351419.8A patent/CN103100562B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5197179A (en) * | 1991-04-18 | 1993-03-30 | T. Sendzimir, Inc. | Means and a method of improving the quality of cold rolled stainless steel strip |
| US5571343A (en) * | 1993-08-25 | 1996-11-05 | Pohang Iron & Steel Co., Ltd. | Austenitic stainless steel having superior press-formability, hot workability and high temperature oxidation resistance, and manufacturing process therefor |
| JPH07303902A (en) * | 1994-05-11 | 1995-11-21 | Nippon Steel Corp | Method for producing high-gloss austenitic stainless steel sheet |
| CN1261563A (en) * | 1999-01-15 | 2000-08-02 | 初显仁 | Centrifugal process for casting oil storage tank |
| CN1318438A (en) * | 2001-06-05 | 2001-10-24 | 宁波宝新不锈钢有限公司 | Cold rolling process of ferrite and martensitic stainless steel belt |
| 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 |
| CN101912874A (en) * | 2010-07-14 | 2010-12-15 | 宁波钢铁有限公司 | Production method of preventing from coiling and pulling narrow of hot-rolled low carbon strip steels used for cold-rolled base plates |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103469193A (en) * | 2013-08-23 | 2013-12-25 | 中核苏阀横店机械有限公司 | Formula of forming pickling passivation solution for surface oxide film of stainless steel casting |
| CN106583215A (en) * | 2016-12-16 | 2017-04-26 | 安徽宝恒新材料科技有限公司 | Method for improving antibacterial capacity of stainless steel |
| CN107604150A (en) * | 2017-08-31 | 2018-01-19 | 河钢股份有限公司邯郸分公司 | Suppress the method for furnace roller of continuous annealing furnace dross |
| CN107604150B (en) * | 2017-08-31 | 2019-01-01 | 河钢股份有限公司邯郸分公司 | Inhibit the method for furnace roller of continuous annealing furnace dross |
| CN110592640A (en) * | 2019-10-14 | 2019-12-20 | 安徽豪鼎金属制品有限公司 | Stainless steel surface corrosion-resistant treatment system and treatment method adopting same |
| CN112275804A (en) * | 2020-08-31 | 2021-01-29 | 山西太钢不锈钢精密带钢有限公司 | Control method for surface color difference of precise stainless steel strip |
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| Publication number | Publication date |
|---|---|
| CN103100562B (en) | 2015-04-01 |
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