CN103203310A - Production method of back plate for liquid crystal display television - Google Patents
Production method of back plate for liquid crystal display television Download PDFInfo
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- CN103203310A CN103203310A CN2013101054733A CN201310105473A CN103203310A CN 103203310 A CN103203310 A CN 103203310A CN 2013101054733 A CN2013101054733 A CN 2013101054733A CN 201310105473 A CN201310105473 A CN 201310105473A CN 103203310 A CN103203310 A CN 103203310A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 239000003973 paint Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000002161 passivation Methods 0.000 claims abstract description 10
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000005238 degreasing Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 238000004886 process control Methods 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 16
- 239000004922 lacquer Substances 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 9
- 229920002521 macromolecule Polymers 0.000 claims description 8
- 229920001225 polyester resin Polymers 0.000 claims description 8
- 239000004645 polyester resin Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000003666 anti-fingerprint Effects 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 7
- 230000037452 priming Effects 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 238000003359 percent control normalization Methods 0.000 claims description 3
- 238000009500 colour coating Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005201 scrubbing Methods 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007639 printing Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to the field of color coated steel plate production, in particular to a production method of a backboard for a liquid crystal television, which is characterized in that the steel quality of a raw material is deep-drawing steel with DX53D + Z and above, the surface of the deep-drawing steel meets the quality standard of FB grade and above, starting from the process control and adjustment of pretreatment, coating, solidification, cooling procedures and coiling process in the production process, the specific control steps comprise: 1) the pretreatment process comprises pre-degreasing, pre-scrubbing and pre-rinsing, and the production line speed is controlled to be 50-70 m/min; 2) passivation, coating of primer and finish on the front surface of the product and coating of the back paint of the product; 3) drying and curing at the temperature of 218-226 ℃; 4) cooling the strip steel; 5) the strip steel uses a paper sleeve when being coiled on line. Compared with the prior art, the invention has the beneficial effects that: the quality characteristic requirements of the liquid crystal television back plate can be met, and therefore the liquid crystal television back plate with high appearance and excellent performance is produced through a color coating process.
Description
Technical field
The present invention relates to the color painted steel strip production field, relate in particular to a kind of production method of liquid crystal display television by using backboard.
Background technology
For a long time, the liquid crystal TV set backboard is many based on working of plastics, because of characteristics such as its weigh light, easy-formation, suitable the small screen, is used widely.And in recent years, follow the breakthrough of LCD Technology, and the development of LCD TV product field is rapid, and expands to the large scale specification fast, and the variation of dimensions has caused the demand to mass propertys such as television set backboard intensity, thermal diffusivity, anti-leak electromagnetic waves.For solving this technical problem, and for further reducing production costs, some TV enterprises or its backboard supplier begin to seek successively steel mill and directly produce the LCD TV backboard by the color coating operation, and at washing machine, refrigerator, refrigerator-freezer, micro-wave oven, STB, solar water heater, light fixture, in a series of household electrical appliances outside plates such as television set, especially the highest with television set outside plate quality requirement, requirement has perfect outward appearance, possesses deep drawing quality, anti-finger printing, mass property requirements such as electric conductivity, technology controlling and process is very complicated, production process control is extremely unstable, is difficult to satisfy the quality requirement of high-end customer.
Summary of the invention
The object of the present invention is to provide a kind of production method of liquid crystal display television by using backboard, make color coated steel sheet can reach LCD TV backboard quality requirement, thereby realize the LCD TV backboard by colour-coating technology production high-quality outward appearance, premium properties.
For solving the problems of the technologies described above, technical scheme of the present invention is:
A kind of production method of liquid crystal display television by using backboard, the raw material steel requires to be DX53D+Z and above deep punching steel, its surface requirements reaches FB level and above quality standard, the process control adjustment of the preliminary treatment from production process, application, curing, refrigerating work procedure and coiling technique is started with, and it is specifically controlled step and comprises:
1) pretreating process comprise pre-degreasing, scrub in advance, pre-rinsing, temperature control at 50 ℃～60 ℃, degreasing and the concentration of lye scrubbed in advance are 1%～3% in advance, the filtered water rinsing, the production line speed control is built in 50m/min～70m/min;
2) coating process comprises the application of priming paint and finish paint and the product back of the body lacquer in passivation, product front, wherein:
1. the environmental protection passivation technology is adopted in passivation, and environmental protection passivating solution concentration is by 30%～40% control, and the front of only coming into operation is coated with head and carries out positive application, and lower surface is coated with head and only is not with liquid with steel rider, works the supporting role that reclines;
2. the priming paint in product front is the macromolecule polyester resin of extensibility and strong adhesion, adopts two rollers against being coated with mode, is coated with roller roller speed/linear speed=1.2～1.5, carries material roller roller speed/linear speed=1.0～1.4, is coated with pressure 2.0～3.0KN between roller and band steel;
Finish paint is macromolecule polyester resin system coating, adopts three rollers against being coated with mode, is coated with roller roller speed/linear speed=1.1～1.4, carries material roller roller speed/linear speed=1.4～1.8, and metering roll roller speed is 5m/min～10m/min;
3. product back of the body lacquer adopts conduction back of the body lacquer or anti-fingerprint to film, and adopts all that two rollers are contrary to be coated with the mode application, when adopting conduction back of the body lacquer, is coated with roller roller speed/linear speed=1.2～1.4, carries material roller roller speed/linear speed=1.0～1.3; As adopt anti-fingerprint to film, and must use the stoste application, be coated with roller roller speed/linear speed=1.2～1.3, carry material roller roller speed/linear speed=1.0～1.2;
Technological temperature control is between 218 ℃～226 ℃ when 3) solidifying;
4) the band steel solidifies the back cooling, and cooling water adopts demineralized water, and its electrical conductivity control is at 50～100 μ m/s, and cooling processing time requirement is not less than 10s, cooling back belt steel temperature≤45 ℃;
5) the band steel uses paper sleeve when wire reel-up, and basic coiling tension is 18000N～20000N, and ladder tension force is set to 160%～200%, coil of strip weight≤5 ton of rolling off the production line.
Compared with prior art, the invention has the beneficial effects as follows: make the color coated steel sheet of production can reach the LCD TV backboard to mass property requirements such as perfect outward appearance, deep drawing quality, anti-finger printing, electric conductivity, thereby realize the LCD TV backboard by colour-coating technology production high-quality outward appearance, premium properties.
The specific embodiment
The invention will be further described below in conjunction with the specific embodiment:
The production method of a kind of liquid crystal display television by using backboard of the present invention, the raw material steel is required to be DX53D+Z and above deep punching steel, its surface requirements reaches FB level and above quality standard, the process control adjustment of the preliminary treatment from production process, application, curing, refrigerating work procedure and coiling technique is started with, and it is specifically controlled step and comprises:
1) for avoiding raw material impurity to pollute the entry loop roller, before entry loop, pretreating process need be set, pretreating process comprises pre-degreasing, scrubs in advance, pre-rinsing, temperature control is at 50 ℃～60 ℃, pre-degreasing and the concentration of lye of scrubbing in advance are 1%～3%, and the application characteristic of coating own and the requirement of tame electroplax surface quality are considered in the filtered water rinsing, production line hastens unsuitable too high, and the production line speed control is built in 50m/min～70m/min;
2) coating process comprises the application of priming paint and finish paint and the product back of the body lacquer in passivation, product front, wherein:
1. the environmental protection passivation technology is adopted in passivation, and environmental protection passivating solution concentration is by 30%～40% control, and the front of only coming into operation is coated with head and carries out positive application, and lower surface is coated with head and only is not with liquid with steel rider, works the supporting role that reclines;
2. in order to improve the punching mouldability, the priming paint in product front is the macromolecule polyester resin of extensibility and strong adhesion, adopts two rollers against being coated with mode, is coated with roller roller speed/linear speed=1.2～1.5, carry material roller roller speed/linear speed=1.0～1.4, be coated with pressure 2.0～3.0KN between roller and band steel;
For making finish paint have scratch resistance and stain resistance, finish paint is macromolecule polyester resin system coating, adopts three rollers against being coated with mode, is coated with roller roller speed/linear speed=1.1～1.4, carries material roller roller speed/linear speed=1.4～1.8, and metering roll roller speed is 5m/min～10m/min;
3. product back of the body lacquer adopts conduction back of the body lacquer or anti-fingerprint to film, and adopts all that two rollers are contrary to be coated with the mode application, when adopting conduction back of the body lacquer, is coated with roller roller speed/linear speed=1.2～1.4, carries material roller roller speed/linear speed=1.0～1.3; As adopt anti-fingerprint to film, and must use the stoste application, be coated with roller roller speed/linear speed=1.2～1.3, carry material roller roller speed/linear speed=1.0～1.2;
3) during baking and curing technological temperature control between 218 ℃～226 ℃;
4) be with steel to solidify the back cooling, be corrosion resistance and the raising film quality that guarantees to film, and for preventing the adhesion defective, cooling water adopts demineralized water, its electrical conductivity control is at 50～100 μ m/s, and cooling processing time requirement is not less than 10s, cooling back belt steel temperature≤45 ℃;
5) the band steel is when wire reel-up, because of the product material softer and film smooth, for avoiding the volume problem of collapsing, the use paper sleeve, basic coiling tension is 18000N～20000N, ladder tension force is set to 160%～200%, coil of strip weight≤5 ton of rolling off the production line.
Among the embodiment, in the production process, pretreatment temperature is selected 55 ℃, and pre-degreasing, to scrub concentration of lye in advance be 2%; Environmental protection passivating solution concentration is 30%; Priming paint adopts macromolecule polyester resin, and two rollers are contrary to be coated with mode, is coated with roller roller speed/linear speed=1.3, carries material roller roller speed/linear speed=1.2, is coated with roller and supports roll gap pressure 2.0KN; Finish paint is selected macromolecule polyester resin system coating, adopts three rollers against being coated with mode, is coated with roller roller speed/linear speed=1.2, carries material roller roller speed/linear speed=1.5, and metering roll roller speed is 8m/min; The product back side adopts two rollers to carry out the application of anti-fingerprint stoste against being coated with mode, is coated with roller roller speed/linear speed=1.2, carries material roller roller speed/linear speed=1.0; Band steel baking and curing temperature is 222 ℃, solidifies the back cooling water and adopts demineralized water, and electrical conductivity is 70 μ m/s, and the cooling processing time is 12s, and cooling back belt steel temperature is 40 ℃; For avoiding the volume problem of collapsing, online use paper sleeve, coiling tension are 20000N, and ladder tension force arranges 150%, coil of strip weight≤5 ton of rolling off the production line, and plate quality can meet the demands fully.
Claims (1)
1. the production method of a liquid crystal display television by using backboard, it is characterized in that, the raw material steel requires to be DX53D+Z and above deep punching steel, its surface requirements reaches FB level and above quality standard, the process control adjustment of the preliminary treatment from production process, application, curing, refrigerating work procedure and coiling technique is started with, and it is specifically controlled step and comprises:
1) pretreating process comprise pre-degreasing, scrub in advance, pre-rinsing, temperature control at 50 ℃～60 ℃, degreasing and the concentration of lye scrubbed in advance are 1%～3% in advance, the filtered water rinsing, the production line speed control is built in 50m/min～70m/min;
2) coating process comprises the application of priming paint and finish paint and the product back of the body lacquer in passivation, product front, wherein:
1. the environmental protection passivation technology is adopted in passivation, and environmental protection passivating solution concentration is by 30%～40% control, and the front of only coming into operation is coated with head and carries out positive application, and lower surface is coated with head and only is not with liquid with steel rider, works the supporting role that reclines;
2. the priming paint in product front is the macromolecule polyester resin of extensibility and strong adhesion, adopts two rollers against being coated with mode, is coated with roller roller speed/linear speed=1.2～1.5, carries material roller roller speed/linear speed=1.0～1.4, is coated with pressure 2.0～3.0KN between roller and band steel;
Finish paint is macromolecule polyester resin system coating, adopts three rollers against being coated with mode, is coated with roller roller speed/linear speed=1.1～1.4, carries material roller roller speed/linear speed=1.4～1.8, and metering roll roller speed is 5m/min～10m/min;
3. product back of the body lacquer adopts conduction back of the body lacquer or anti-fingerprint to film, and adopts all that two rollers are contrary to be coated with the mode application, when adopting conduction back of the body lacquer, is coated with roller roller speed/linear speed=1.2～1.4, carries material roller roller speed/linear speed=1.0～1.3; As adopt anti-fingerprint to film, and must use the stoste application, be coated with roller roller speed/linear speed=1.2～1.3, carry material roller roller speed/linear speed=1.0～1.2;
Technological temperature control is between 218 ℃～226 ℃ when 3) solidifying;
4) the band steel solidifies the back cooling, and cooling water adopts demineralized water, and its electrical conductivity control is at 50～100 μ m/s, and cooling processing time requirement is not less than 10s, cooling back belt steel temperature≤45 ℃;
5) the band steel uses paper sleeve when wire reel-up, and basic coiling tension is 18000N～20000N, and ladder tension force is set to 160%～200%, coil of strip weight≤5 ton of rolling off the production line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101054733A CN103203310A (en) | 2013-03-28 | 2013-03-28 | Production method of back plate for liquid crystal display television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101054733A CN103203310A (en) | 2013-03-28 | 2013-03-28 | Production method of back plate for liquid crystal display television |
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| CN103203310A true CN103203310A (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013101054733A Pending CN103203310A (en) | 2013-03-28 | 2013-03-28 | Production method of back plate for liquid crystal display television |
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| Country | Link |
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| CN (1) | CN103203310A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801469A (en) * | 2015-04-28 | 2015-07-29 | 沈阳毅昌科技有限公司 | Paint spray coating method of flat-panel television sheet metal base plate |
| CN105436051A (en) * | 2015-11-11 | 2016-03-30 | 广东富胜实业有限公司 | Automatic spray-coating method for television backboard |
| CN105689216A (en) * | 2016-03-25 | 2016-06-22 | 东莞市富迪五金有限公司 | Television hardware rear panel powder spraying technology |
| CN105983527A (en) * | 2015-02-25 | 2016-10-05 | 鞍钢股份有限公司 | Production method of ultrahigh-film-thickness color-coated plate |
| CN107931074A (en) * | 2017-11-16 | 2018-04-20 | 马鞍山钢铁股份有限公司 | A kind of good environment-friendly type television backboard Coil Coating Products of processability and its production technology |
| CN111604247A (en) * | 2020-05-13 | 2020-09-01 | 武汉钢铁有限公司 | High-precision color-coated sheet film thickness production control method |
| CN112170143A (en) * | 2019-07-02 | 2021-01-05 | 深圳Tcl数字技术有限公司 | Metal back plate, display device and pre-coating method of metal back plate |
| CN112724784A (en) * | 2020-12-29 | 2021-04-30 | 深圳Tcl数字技术有限公司 | Powder coating and preparation method thereof, integrated backboard and coating method thereof |
| CN113997674A (en) * | 2021-10-25 | 2022-02-01 | 珠海拾比佰彩图板股份有限公司 | Method for manufacturing high-strength steel-plastic television back plate |
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| CN202242160U (en) * | 2011-07-24 | 2012-05-30 | 珠海拾比佰彩图板股份有限公司 | Ultra-deep punching frosted Phase Change Material (PCM) composite steel plate for liquid crystal television back plate |
| CN102698949A (en) * | 2012-05-10 | 2012-10-03 | 合肥海尔特种钢板研制开发有限公司 | Preparation method of vertical texture colorful board as well as colorful board manufactured by using preparation method |
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2013
- 2013-03-28 CN CN2013101054733A patent/CN103203310A/en active Pending
Patent Citations (6)
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| CN1583912A (en) * | 2004-05-27 | 2005-02-23 | 解居会 | Coiled material priming paint coating and preparing method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983527A (en) * | 2015-02-25 | 2016-10-05 | 鞍钢股份有限公司 | Production method of ultrahigh-film-thickness color-coated plate |
| CN104801469A (en) * | 2015-04-28 | 2015-07-29 | 沈阳毅昌科技有限公司 | Paint spray coating method of flat-panel television sheet metal base plate |
| CN105436051A (en) * | 2015-11-11 | 2016-03-30 | 广东富胜实业有限公司 | Automatic spray-coating method for television backboard |
| CN105689216A (en) * | 2016-03-25 | 2016-06-22 | 东莞市富迪五金有限公司 | Television hardware rear panel powder spraying technology |
| CN107931074A (en) * | 2017-11-16 | 2018-04-20 | 马鞍山钢铁股份有限公司 | A kind of good environment-friendly type television backboard Coil Coating Products of processability and its production technology |
| CN112170143A (en) * | 2019-07-02 | 2021-01-05 | 深圳Tcl数字技术有限公司 | Metal back plate, display device and pre-coating method of metal back plate |
| CN111604247A (en) * | 2020-05-13 | 2020-09-01 | 武汉钢铁有限公司 | High-precision color-coated sheet film thickness production control method |
| CN111604247B (en) * | 2020-05-13 | 2022-05-03 | 武汉钢铁有限公司 | High-precision color-coated sheet film thickness production control method |
| CN112724784A (en) * | 2020-12-29 | 2021-04-30 | 深圳Tcl数字技术有限公司 | Powder coating and preparation method thereof, integrated backboard and coating method thereof |
| CN113997674A (en) * | 2021-10-25 | 2022-02-01 | 珠海拾比佰彩图板股份有限公司 | Method for manufacturing high-strength steel-plastic television back plate |
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