CN105734631B - The electro-plating method of roll for cold rolling frosting treatment - Google Patents
The electro-plating method of roll for cold rolling frosting treatment Download PDFInfo
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- CN105734631B CN105734631B CN201410748449.6A CN201410748449A CN105734631B CN 105734631 B CN105734631 B CN 105734631B CN 201410748449 A CN201410748449 A CN 201410748449A CN 105734631 B CN105734631 B CN 105734631B
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Abstract
The invention discloses a kind of electro-plating methods of roll for cold rolling frosting treatment, i.e. this electroplate liquid includes chromic acid, sulfuric acid and hydrogen peroxide；This method carries out Pre-treatment before plating to roller surface first；Then roll is totally submerged in electroplate liquid, sets roll surface at a distance from insoluble anode, temperature of electroplating solution and roll rotational speed；And one plate cycle of roll includes pulse current section and DC current section, and the time of pulse current section is 960~3000 ms, and conducting current density is 10~30 A/dm2；The DC current section time is 480~2400 ms, and current density is 1~10 A/dm2；After roll coating reaches 15~120 μm, terminate plating.This electroplate liquid and electro-plating method form the chrome layer with specific spherical microstructure in roller surface, achieve the purpose that the surface textures requirement such as specific roughness, peak density.
Description
Technical field
The present invention relates to a kind of electro-plating methods of roll for cold rolling frosting treatment.
Background technique
The cold-reduced sheet that there is certain roughness to require for surface texturing cold-reduced sheet, i.e. surface, is auto industry and household electrical appliances industry
Important materials.Texturing cold-reduced sheet may insure to keep closed state in the hole of lubricating oil under high pressure during steel plate deformed,
Cushion is formed between steel plate and grinding tool, improves antifraying property, makes it have good covering with paint and punching performance, and hair
Changing steel plate is exactly to be rolled by surface through the roll for cold rolling of frosting treatment.In order to produce high-quality cold rolling textured steel sheet, first
Frosting treatment is carried out to roll for cold rolling, then milling train rolls out required cold rolling textured steel sheet using Texturing Surface of Roll.
Processability and coating performance are to measure the important indicator that uses of cold-rolled steel sheet, this spy with belt steel surface pattern
Sign parameter has close relationship.The most basic parameter of belt steel surface pattern is roughness (Ra) and peak value (Pc), and different is thick
Rugosity and peak density distribution means be averaged wave crest-trough height and wave crest number it is different.Biggish roughness can form phase
The lubrication pit being mutually isolated is conducive to the friction shaping characteristic for improving strip；Equally distributed roughness, high peak density and nothing
The pattern of regular distribution, it is possible to reduce optical fringe avoids orange peel effect, and the japanning optics for being conducive to improve strip is special
Property.Thus, Ra, Pc are the key factors for controlling strip service performance.
Currently, common roller texturing treatment process mainly has shot-peening texturing (SBT) technique and electric spark texturing (EDT) work
Skill, two kinds of roughing methods of SBT and EDT are all to be deformed by roll surface material plasticity or local melting, form indent on surface
Texturing pattern.These processes all influence the service performance of roll surface material to a certain extent, and roll surface pattern is easy to by many
The spike composition for fractureing and wearing, influences the retention property and wear-resisting property of roll surface material roughness, and the decaying of roll surface roughness is
Lead to a main cause of roll change.Therefore more advanced roller surface texturing technology is explored and is developed, have become current cold rolling
The urgent need of plate production.
A kind of method that United States Patent (USP) US6319385B1 describes roll surface electrodeposited chromium texturing, the patent describe use three
The method that layer coating obtains texturing effect: first layer is direct current electrode position nickel layer, and the second layer is direct current electrode position hard chromium layers, and third layer is adopted
Texturing chrome plating needed for roll works is obtained with staircase waveform electric current；This method process is more, increases the cost for implementing operation
And difficulty, used current waveform are relatively difficult to realize, more to power-supply device is more demanding and uses electroplating bath components,
Containing the toxic and very strong silicofluoric acid of corrosivity.United States Patent (USP) US6478943B1 proposes a kind of electrodeposited chromium roughing method, the party
It is smaller that method obtains plating bed roughness, it is difficult to meet production needs.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of electro-plating method of roll for cold rolling frosting treatment, this plating sides
The roughness decaying that method overcomes traditional roll for cold rolling frosting treatment is too fast, service life is low, surface topography pits are more than convex
It rises, be unfavorable for the defects of duplication of the strip to its surface roughness, being formed in roller surface has specific spherical microstructure
Chrome layer achievees the purpose that the surface textures requirement such as specific roughness, peak density.
In order to solve the above technical problems, the electroplate liquid of roll for cold rolling frosting treatment of the present invention includes 180~300 g/ of chromic acid
L, 1.5~3 g/L of sulfuric acid, 8~20 g/L of hydrogen peroxide.
A kind of electro-plating method of roll for cold rolling frosting treatment includes the following steps:
Step 1: carrying out Pre-treatment before plating to roller surface；
Step 2: roll is totally submerged in electroplate liquid using above-mentioned electroplate liquid, roll surface is with insoluble anode distance
50~400 mm, temperature of electroplating solution are 45~58 DEG C, and roll rotational speed is 1~5 turn/min；
Step 3: one plate cycle of roll includes pulse current section and DC current section, the time of pulse current section is
960~3000 ms, conducting current density are 10~30 A/dm2；The DC current section time is 480~2400 ms, current density
For 1~10 A/dm2；
Step 4: terminating plating after roll coating reaches 15~120 μm.
Further, the current lead-through time of the pulse current section is 20~200 ms, current-off time is 10~100
ms。
Further, roller surface Pre-treatment before plating includes:
1) mechanical polishing processing, is carried out to roller surface, surface oxide layer and rejected region is removed, is then polishing to surface
Coarse is 0.5 μm；
2) it, using the greasy dirt and metal slag on acetone cleaning roller surface, is then rinsed with clear water；
3) roller surface, is wiped using plating conventional alkaline degreasant solution, solution temperature is 50 DEG C, is then rushed with clear water
It washes；
4) electrolytic degreasing, is carried out to roll, roll is immersed in degreasing fluid, and degreasing fluid temperature is 50 DEG C, and current density is
5.0 A/dm2, the processing time is 2 min, then takes out roll, is rinsed with clear water；
5), roll is activated with conventional acid etching solution using plating, the etch time is 1 min, is then used
Clear water rinses.
Since the electro-plating method of roll for cold rolling frosting treatment of the present invention uses above-mentioned technical proposal, i.e. this electroplate liquid includes
Chromic acid, sulfuric acid and hydrogen peroxide；This method carries out Pre-treatment before plating to roller surface first；Then roll is totally submerged electroplate liquid
In, roll surface is set at a distance from insoluble anode, temperature of electroplating solution and roll rotational speed；And one plate cycle of roll includes arteries and veins
Current segment and DC current section are rushed, the time of pulse current section is 960~3000 ms, and conducting current density is 10~30 A/
dm2；The DC current section time is 480~2400 ms, and current density is 1~10 A/dm2；When roll coating reaches 15~120 μm
Afterwards, terminate plating.The roughness decaying that this electro-plating method overcomes traditional roll for cold rolling frosting treatment is too fast, service life is low,
Surface topography pits are more than protrusion, are unfavorable for the defects of duplication of the strip to its surface roughness, are formed and are had in roller surface
There is the chrome layer of specific spherical microstructure, achievees the purpose that the surface textures requirement such as specific roughness, peak density.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
Fig. 1 is the current waveform figure of a plate cycle in this electro-plating method；
Fig. 2 is the texturing coating surface morphology schematic diagram obtained using this electro-plating method.
Specific embodiment
The embodiment of the present invention sees below Tables 1 and 2:
Table 1
Table 2
| Ta(ms) | Tb(ms) | Tab(ms) | Tcd(ms) | Ia(A/dm2) | Icd(A/dm2) | |
| Embodiment 1 | 20 | 10 | 480 | 2000 | 100 | 10 |
| Embodiment 2 | 30 | 15 | 960 | 1440 | 150 | 30 |
| Embodiment 3 | 90 | 30 | 1440 | 960 | 200 | 50 |
| Embodiment 4 | 150 | 50 | 2000 | 480 | 250 | 80 |
| Embodiment 5 | 200 | 100 | 2400 | 480 | 300 | 100 |
As shown in Figure 1, in table 2, in a plate cycle T, TabFor pulse current section time, TcdFor DC current section
Time, TaFor current lead-through time, T in the pulse current section timebFor current-off time, I in the pulse current section timeaFor arteries and veins
Rush conducting current density in the current segment time, IcdFor the current density in the DC current section time；Wherein T=Tab+Tcd, Tab=K
(Ta+Tb),K=1、2、3…
The plating bed roughness and peak density of the embodiment 1 to 5 as listed by Tables 1 and 2 are shown in Table 3:
Table 3
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| Roughness (μm) | 1.2 | 2.58 | 4.49 | 3.83 | 4.24 |
| Peak density (pks/cm) | 47 | 112 | 98 | 89 | 73 |
As shown in Fig. 2, this method forms the chrome layer with certain texturing effect in roller surface, do not have to roll surface material
It influences, wear-resisting property depends entirely on the hardness of chrome layer, since chromium hardness is very high, has good wearability, Ke Yi great
The service life of amplitude raising Texturing Surface of Roll.In a plate cycle T, increase pulse current section time Tab, roughness is obvious
Increase；In a plate cycle T, increase DC current section time Tcd, roughness reduction；Increase in the pulse current section time
Conducting current density Ia, plating bed roughness improves, but peak density reduces；Increase the current density I of DC current section timecd,
Plating bed roughness first reduces to be increased afterwards, but peak density is reduced；This electro-plating method can by set electroplating technological parameter,
To obtain desired roller surface frosting treatment effect, in embodiment 1 to 5, it is good to can get appearance uniform, binding force
Good, the texturing chrome layer of hardness height (850-975Hv) meets the surfaces such as roughness, the peak density of roller surface frosting treatment
Texture requirement.
Claims (3)
1. a kind of electro-plating method of roll for cold rolling frosting treatment, it is characterised in that this method includes the following steps:
Step 1: carrying out Pre-treatment before plating to roller surface；
Step 2: 1.5~3 g/L of sulfuric acid, the electroplate liquid of 8~20 g/L of hydrogen peroxide will using including 180~300 g/L of chromic acid
Roll is totally submerged in electroplate liquid, and roll surface and insoluble anode distance are 50~400 mm, and temperature of electroplating solution is 45~58 DEG C,
Roll rotational speed is 1~5 turn/min；
Step 3: one plate cycle of roll includes pulse current section and DC current section, the time of pulse current section is 960~
3000 ms, conducting current density are 10~30 A/dm2；The DC current section time be 480~2400 ms, current density be 1~
10 A/dm2；
Step 4: terminating plating after roll coating reaches 15~120 μm.
2. the electro-plating method of roll for cold rolling frosting treatment according to claim 1, it is characterised in that: the pulse current section
The current lead-through time be 20~200 ms, current-off time is 10~100 ms.
3. the electro-plating method of roll for cold rolling frosting treatment according to claim 1, it is characterised in that: pre- before roller surface plating
Processing includes:
1) mechanical polishing processing, is carried out to roller surface, surface oxide layer and rejected region is removed, is then polishing to rough surface
It is 0.5 μm；
2) it, using the greasy dirt and metal slag on acetone cleaning roller surface, is then rinsed with clear water；
3) roller surface, is wiped using plating conventional alkaline degreasant solution, solution temperature is 50 DEG C, is then rinsed with clear water；
4) electrolytic degreasing, is carried out to roll, roll is immersed in degreasing fluid, and degreasing fluid temperature is 50 DEG C, current density 5.0
A/dm2, the processing time is 2 min, then takes out roll, is rinsed with clear water；
5), roll is activated with conventional acid etching solution using plating, the etch time is 1 min, then uses clear water
It rinses.
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| CN201410748449.6A CN105734631B (en) | 2014-12-10 | 2014-12-10 | The electro-plating method of roll for cold rolling frosting treatment |
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| CN107059084A (en) * | 2017-01-03 | 2017-08-18 | 本溪市通宝冶金设备制造有限公司 | The method for preventing roll from plating pollution of chromium environment |
| CN112222194A (en) * | 2020-08-31 | 2021-01-15 | 江苏友富薄板科技有限公司 | Leveling machine applying chrome-plated roller |
Citations (5)
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| CN1115583A (en) * | 1993-10-07 | 1996-01-24 | 罗马包-控股公开股份有限公司 | Process for the galvanic application of a surface coating |
| JPH0891842A (en) * | 1994-09-26 | 1996-04-09 | Nippon Denko Kk | Production of basic chromium sulfate to be used for chromium system electroplating |
| US6478943B1 (en) * | 2000-06-01 | 2002-11-12 | Roll Surface Technologies, Inc. | Method of manufacture of electrochemically textured surface having controlled peak characteristics |
| CN102041533A (en) * | 2009-10-20 | 2011-05-04 | 上海通乐冶金设备工程有限公司 | Method for barrel-plating copper and chromium on surface of cold-rolled sheet tinned conductive roller |
| CN103255455A (en) * | 2013-05-31 | 2013-08-21 | 东北大学 | Method and device for pulse texturing treatment of surface of metal material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10255853A1 (en) * | 2002-11-29 | 2004-06-17 | Federal-Mogul Burscheid Gmbh | Manufacture of structured hard chrome layers |
| DE102004019370B3 (en) * | 2004-04-21 | 2005-09-01 | Federal-Mogul Burscheid Gmbh | Production of optionally coated structurized hard chrome layer, used e.g. for decoration, protection or functional coating on printing roller or stamping, embossing or deep drawing tool uses aliphatic sulfonic acid in acid plating bath |
| KR100624665B1 (en) * | 2005-01-20 | 2006-09-19 | 한국기계연구원 | Low magnetic loss metal tape with biaxial texture and method of manufacturing |
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2014
- 2014-12-10 CN CN201410748449.6A patent/CN105734631B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115583A (en) * | 1993-10-07 | 1996-01-24 | 罗马包-控股公开股份有限公司 | Process for the galvanic application of a surface coating |
| JPH0891842A (en) * | 1994-09-26 | 1996-04-09 | Nippon Denko Kk | Production of basic chromium sulfate to be used for chromium system electroplating |
| US6478943B1 (en) * | 2000-06-01 | 2002-11-12 | Roll Surface Technologies, Inc. | Method of manufacture of electrochemically textured surface having controlled peak characteristics |
| CN102041533A (en) * | 2009-10-20 | 2011-05-04 | 上海通乐冶金设备工程有限公司 | Method for barrel-plating copper and chromium on surface of cold-rolled sheet tinned conductive roller |
| CN103255455A (en) * | 2013-05-31 | 2013-08-21 | 东北大学 | Method and device for pulse texturing treatment of surface of metal material |
Non-Patent Citations (1)
| Title |
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| 浅谈维持镀铬液中三价铬;奚兵;《电镀与环保》;20100531;第30卷(第3期);41 |
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Address after: No. 3520 Tongji Road, Baoshan District, Shanghai, 201900 Patentee after: Baowu equipment Intelligent Technology Co., Ltd Address before: 201900, 335, Pu Pu Road, Shanghai, Baoshan District Patentee before: SHANGHAI BAOSTEEL INDUSTRY TECHNOLOGICAL SERVICE Co.,Ltd. |
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