CN102653840A - Color-coated and laminated cold-rolled substrate for household appliances and production method of color-coated and laminated cold-rolled substrate - Google Patents
Color-coated and laminated cold-rolled substrate for household appliances and production method of color-coated and laminated cold-rolled substrate Download PDFInfo
- Publication number
- CN102653840A CN102653840A CN2011100528659A CN201110052865A CN102653840A CN 102653840 A CN102653840 A CN 102653840A CN 2011100528659 A CN2011100528659 A CN 2011100528659A CN 201110052865 A CN201110052865 A CN 201110052865A CN 102653840 A CN102653840 A CN 102653840A
- Authority
- CN
- China
- Prior art keywords
- cold
- rolled substrate
- rolled
- color
- coated
- 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.)
- Pending
Links
Abstract
The invention relates to a color-coated and laminated cold-rolled substrate for household appliances and a production method of the color-coated and laminated cold-rolled substrate, belonging to the technical field of iron-based alloy. The production method of the color-coated and laminated cold-rolled substrate comprise the following steps of: controlling components of the components of the color-coated and laminated cold-rolled substrate in mass by percent: not more than 0.0028 percent of C, not more than 0.034 percent of Si, 0.2-0.3 percent of Mn, not more than 0.012 percent of P, not more than 0.015 percent of S, 0.03-0.06 percent of Al, 0.04-0.06 percent of Ti, not more than 0.004 percent of N and the balance of Fe; and controlling continuous annealing and cold-rolling and crimp smoothing rate when the color-coated and laminated cold-rolled substrate is cold-rolled to be respectively 740-760 DEG C and 1.6-2.0 percent. Reasonable chemical components, annealing temperature and proper cold-rolling and re-crimp smoothing rate are adopted in the color-coated and laminated cold-rolled substrate and the production method thereof, thus the production difficulty of steelmaking can be reduced, and properties of the cold-rolled substrate can meet requirements of the color-coated and laminated cold-rolled substrate for the household appliances through proper annealing and smoothing processes.
Description
Technical field
The present invention relates to a kind of cold-rolled substrate, and relate to a kind of working method of this cold-rolled substrate, belong to the ferrous alloy technical field.
Background technology
Household electrical appliances normally on the surface of cold-rolled substrate, uniformly are covered with one deck color beautiful color film through technologies such as several times coating, bakings with color coating, overlay film substrate, carry out punching press, bending and molding again.Owing in overlay film, need the several times short-term baking to heat up; Therefore; Cold-rolled substrate is had higher stampability and anti-artificially aged requirement, and promptly after baking several times, yield point elongation can not appear in the stress strain curve of substrate; The slip line defective must not appear in product surface in follow-up distortion, and promptly the ys of product can not be too high.Simultaneously, household electrical appliances also have certain rigidity requirement (certain anti-recessed flat property will be arranged) to cold-rolled substrate with color coating, overlay film substrate, and promptly the ys of product can not be too low.Like this, just require the ys of cold-rolled substrate should have upper and lower bound simultaneously, promptly require the ys of cold-rolled substrate should remain within the lower and close limit of bulk strength.
Theoretical investigation shows, guarantee aging resistance and stampability that above-mentioned cold-rolled substrate is good, will reduce C, the N content of steel intermediate gap solid solution exactly as far as possible.But it is existing when adopting the common low carbon aluminium killed steel to produce above-mentioned cold-rolled substrate; Because the annealing time that moves back on the product line is limited connecting; C in the common low carbon aluminium killed steel, N atom have little time to separate out with the form of AlN and carbide, therefore can't realize the requirement of product aging resistance.
Also have now comparatively generally and even moving back employing IF steel (interstitial-free steel on the product line; Claim gapless atomic steel again) produce above-mentioned cold-rolled substrate; Because therefore contained C itself, N element seldom can solve the ageing of material and stampability problem preferably in the IF steel.But as stated,, not only require the overall ys of cold-rolled substrate lower, and require the ys of cold-rolled substrate should have narrower upper and lower limit scope from the subsequent machining technology requirement of household electrical appliances with color coating, overlay film substrate.And to realize the ys scope that cold-rolled substrate is low and narrow, and the content that generally needs accurately to control the C composition should have in the low and narrow scope, and the content of strict control C composition is in certain upper and lower limit scope when promptly requiring the IF steel to produce.But in the production of reality,, therefore, generally only limit a C upper content limit in the conventional production, want C content is controlled at that (such as 0.002%-0.003%) then is difficult to accomplish in the very narrow scope because the C content that IF steel itself requires is just very low.Therefore, adopting the method for control C content upper and lower limit to produce to satisfy household electrical appliances is to be difficult for realization with the cold-rolled substrate of color coating, overlay film substrate performance requriements.
Summary of the invention
The technical problem that the present invention solves is: propose a kind of lower limit that need not to limit the C component content, promptly adopt the production of conventional IF steel just can reach cold-rolled substrate low and the close limit ys, thereby satisfy the performance requriements of household electrical appliances with color coating, overlay film substrate.
In order to solve the problems of the technologies described above, one of technical scheme that the present invention proposes is: a kind of color coating, overlay film cold-rolled substrate that is used for household electrical appliances, and composition that said cold-rolled substrate contains and mass percentage content are: C≤0.0028%; Si≤0.034%, Mn:0.2-0.3%, P≤0.012%; S≤0.015%, Al:0.03-0.06%, Ti:0.04-0.06%; N≤0.004%, all the other are Fe; Temperature is moved back by company when said cold-rolled substrate is cold rolling and the cold rolling smooth rate of curling is respectively 740-760 ℃ and 1.6-2.0%.
In order to solve the problems of the technologies described above, two of the technical scheme that the present invention proposes is: a kind of color coating of household electrical appliances, working method of overlay film cold-rolled substrate of being used for comprises steel making working procedure, hot-rolled process and cold rolling process; The composition and the mass percentage content of the said cold-rolled substrate of control are in the said steel making working procedure: C≤0.0028%, Si≤0.034%, Mn:0.2-0.3%; P≤0.012%, S≤0.015%, Al:0.03-0.06%; Ti:0.04-0.06%, N≤0.004%, all the other are Fe; Temperature is moved back by company in the said cold rolling process and the cold rolling smooth rate of curling is respectively 740-760 ℃ and 1.6-2.0%.
The beneficial effect and the theoretical foundation of the technical scheme of the invention described above are:
(1) content of reduction C element; Reduce the most directly mode of solid solution C atom in the IF steel beyond doubt; Confirm a lower C component content upper limit; This is favourable to the ageing resistance that guarantees material, and cancellation C component content lower limit then can come the ys of control material can not be lower than the lower limit requirement through the smooth operation after annealing temperature and the annealing; Like this, promptly reduced the difficulty of steel-making, can guarantee that again material property meets the demands.
(2) coiling temperature has influence on separating out of the precipitation process of nitride and carbide, particularly AlN.Higher coiling temperature not only impels the second phase particle in ferritic, to continue to separate out, and can improve its diffusibility, promotes gathering, alligatoring in the annealing process of the second phase particle after batching.Simultaneously, high relatively coiling temperature has also reduced the finish to gauge and the temperature difference of curling, and is easy to controlling hot rolling.
(3) owing to cancelled the C component content lower limit of cold-rolled substrate; Therefore; Accomplish the recrystallization annealing of material through high relatively annealing temperature, reduce the intensity that the back material is rolled in acid, and come doing certain compensation because the C component content reduces the strength degradation that causes through the setting of cold rolling levelling rate.Simultaneously, smooth rate can not be too high, otherwise material can occur owing to strong excessively work hardening causes the too high risk of ys.
In a word; Color coating, overlay film cold-rolled substrate and the working method thereof that is used for household electrical appliances of the present invention adopts rational chemical, annealing temperature and the suitable smooth rate of cold rolling rewinding; Not only can reduce the production difficulty (promptly needn't pursue control C component content in narrower scope) of steel-making, also can guarantee that final cold-rolled substrate performance (promptly controlling ys in narrower scope) can satisfy the requirement of household electrical appliances with color coating, overlay film substrate through suitable annealing, flattening process.
The perfect of one of technique scheme is: finishing temperature during said cold-rolled substrate hot rolling and coiling temperature be respectively 900-940 ℃ with 620-660 ℃.
Further improving of one of technique scheme is: the tapping temperature during said cold-rolled substrate hot rolling is 1200-1240 ℃.
Technique scheme two perfectly be: in the said hot-rolled process, the control finishing temperature is respectively 900-940 ℃ and 620-660 ℃ with coiling temperature.
Two further improve and be of technique scheme: the control tapping temperature is 1200-1240 ℃ in the said hot-rolled process.
Description of drawings
Below in conjunction with accompanying drawing color coating, overlay film cold-rolled substrate and the working method thereof that is used for household electrical appliances of the present invention is described further.
Fig. 1 is one of the color coating that is used for household electrical appliances of the embodiment of the invention, metallographic structure figure of overlay film cold-rolled substrate.
Fig. 2 be the embodiment of the invention the color coating that is used for household electrical appliances, overlay film cold-rolled substrate metallographic structure figure two.
Embodiment
The color coating that is used for household electrical appliances of this embodiment, overlay film cold-rolled substrate are divided into two kinds by the different of its composition and content, and composition and mass percentage content that two kinds of cold-rolled substrate contain are as shown in table 1:
Composition and content during the steel-making of table 1 cold-rolled substrate
The color coating that is used for household electrical appliances of this embodiment, the working method of overlay film cold-rolled substrate comprise steel making working procedure, hot-rolled process and cold rolling process.--desulfurization station----converter--RH stove--continuous casting---the send hot rolling of skimming that steel making working procedure comprises hot metal mixer (tank switching station).Hot-rolled process comprises process furnace heating--roughing--and finish rolling--curls---send cold rolling.Cold rolling process comprises pickling, and--acid is rolled--Lian moves back--, and-rewinding is smooth.
In hot-rolled process, as shown in table 2 for three batches the hot-rolled process parameter separately of above-mentioned two kinds of cold-rolled substrate:
Table 2 hot-rolled process parameter
In hot-rolled process, be to guarantee the finish rolling temperature out in the table 2, generally should guarantee tapping temperature 1200-1240 ℃ before the roughing.
In cold rolling process, as shown in table 3 for three batches the cold-rolling process parameter separately of above-mentioned two kinds of cold-rolled substrate:
Table 3 cold-rolling process parameter
The mechanical property detected result of above-mentioned six batches of cold-rolled substrate is as shown in table 4:
Table 4 mechanical property measuring result
| Test piece number (Test pc No.) | Rel/MPa | Rm/MPa | The n value | The r value | A 80mm/％ | Cup is protruding | HR30T |
| 1-1 | 218 | 344 | 0.216 | 1.836 | 40.7 | 8.8 | 44.3 |
| 1-2 | 218 | 342 | 0.22 | 1.965 | 42.2 | 8.9 | 46 |
| 1-3 | 215 | 340 | 0.216 | 1.849 | 40.8 | 8.8 | 43.5 |
| 2-1 | 210 | 331 | 0.218 | 1.988 | 42 | 9.0 | 44.1 |
| 2-2 | 209 | 340 | 0.212 | 1.925 | 44.7 | 8.6 | 42 |
| 2-3 | 212 | 345 | 0.218 | 1.945 | 43.6 | 8.9 | 42.1 |
Get 1 rouleau of above-mentioned six batches of cold-rolled substrate volume at random, respectively get a sample at each rouleau head, tail respectively and do metallurgical analysis, its tissue is and is ferritic+small-amount free cementite, sees Fig. 1 (tail appearance) and Fig. 2 (head appearance), and use characteristics is stable.Can find out that from table 4 and Fig. 1,2 cold-rolled substrate that adopts this embodiment to produce can satisfy the performance requriements of household electrical appliances with color coating, overlay film substrate.
Color coating, overlay film cold-rolled substrate and the working method thereof that is used for household electrical appliances of the present invention is not limited to the described concrete technical scheme of the foregoing description, and the technical scheme that all employings are equal to replacement formation is the protection domain that the present invention requires.
Claims (6)
1. color coating, an overlay film cold-rolled substrate that is used for household electrical appliances is characterized in that composition and mass percentage content that said cold-rolled substrate contains are: C≤0.0028%, Si≤0.034%; Mn:0.2-0.3%, P≤0.012%, S≤0.015%; Al:0.03-0.06%; Ti:0.04-0.06%, N≤0.004%, all the other are Fe; Temperature is moved back by company when said cold-rolled substrate is cold rolling and the cold rolling smooth rate of curling is respectively 740-760 ℃ and 1.6-2.0%.
2. according to the said cold-rolled substrate of claim 1, finishing temperature when it is characterized in that said cold-rolled substrate hot rolling and coiling temperature be respectively 900-940 ℃ with 620-660 ℃.
3. according to the said cold-rolled substrate of claim 2, the tapping temperature when it is characterized in that said cold-rolled substrate hot rolling is 1200-1240 ℃.
4. one kind is used for the color coating of household electrical appliances, the working method of overlay film cold-rolled substrate, comprises steel making working procedure, hot-rolled process and cold rolling process, it is characterized in that in the said steel making working procedure; Composition and the mass percentage content of controlling said cold-rolled substrate are: C≤0.0028%, Si≤0.034%, Mn:0.2-0.3%; P≤0.012%, S≤0.015%, Al:0.03-0.06%; Ti:0.04-0.06%, N≤0.004%, all the other are Fe; In the said cold rolling process, temperature is even moved back in control and the cold rolling smooth rate of curling is respectively 740-760 ℃ and 1.6-2.0%.
5. according to the said working method of claim 4, it is characterized in that in the said hot-rolled process that control finishing temperature and coiling temperature are respectively 900-940 ℃ and 620-660 ℃.
6. according to the said working method of claim 5, it is characterized in that in the said hot-rolled process that the control tapping temperature is 1200-1240 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100528659A CN102653840A (en) | 2011-03-04 | 2011-03-04 | Color-coated and laminated cold-rolled substrate for household appliances and production method of color-coated and laminated cold-rolled substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100528659A CN102653840A (en) | 2011-03-04 | 2011-03-04 | Color-coated and laminated cold-rolled substrate for household appliances and production method of color-coated and laminated cold-rolled substrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102653840A true CN102653840A (en) | 2012-09-05 |
Family
ID=46729569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100528659A Pending CN102653840A (en) | 2011-03-04 | 2011-03-04 | Color-coated and laminated cold-rolled substrate for household appliances and production method of color-coated and laminated cold-rolled substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102653840A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852894A (en) * | 2019-03-29 | 2019-06-07 | 山东钢铁集团日照有限公司 | A kind of economical aging resistant household appliance precoated substrate and its production method |
| CN113930664A (en) * | 2020-06-29 | 2022-01-14 | 宝山钢铁股份有限公司 | High-purity battery case steel and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704494A (en) * | 2004-05-28 | 2005-12-07 | 宝山钢铁股份有限公司 | Cold rolling glass-lined steel having excellent scale cracking resistance and extra-deep drawing property and manufacturing method thereof |
| CN1888113A (en) * | 2005-06-29 | 2007-01-03 | 宝山钢铁股份有限公司 | Soft tin-plate of hardness HR30T 51+/-3 and its making process |
| CN101230437A (en) * | 2007-01-22 | 2008-07-30 | 宝山钢铁股份有限公司 | Alloyed hot galvanizing bake hardening steel and method for manufacturing same |
| CN101684533A (en) * | 2008-09-27 | 2010-03-31 | 鞍钢股份有限公司 | High strength cold-rolled plate with excellent formability and production method thereof |
-
2011
- 2011-03-04 CN CN2011100528659A patent/CN102653840A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704494A (en) * | 2004-05-28 | 2005-12-07 | 宝山钢铁股份有限公司 | Cold rolling glass-lined steel having excellent scale cracking resistance and extra-deep drawing property and manufacturing method thereof |
| CN1888113A (en) * | 2005-06-29 | 2007-01-03 | 宝山钢铁股份有限公司 | Soft tin-plate of hardness HR30T 51+/-3 and its making process |
| CN101230437A (en) * | 2007-01-22 | 2008-07-30 | 宝山钢铁股份有限公司 | Alloyed hot galvanizing bake hardening steel and method for manufacturing same |
| CN101684533A (en) * | 2008-09-27 | 2010-03-31 | 鞍钢股份有限公司 | High strength cold-rolled plate with excellent formability and production method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852894A (en) * | 2019-03-29 | 2019-06-07 | 山东钢铁集团日照有限公司 | A kind of economical aging resistant household appliance precoated substrate and its production method |
| CN113930664A (en) * | 2020-06-29 | 2022-01-14 | 宝山钢铁股份有限公司 | High-purity battery case steel and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2684985B1 (en) | Process for producing hot-pressed member steel sheet | |
| CN109266958B (en) | F-grade steel for series ship and ocean engineering and flexible production method thereof | |
| CN104419878B (en) | Superhigh intensity cold rolling dual phase steel with weatherability and its manufacture method | |
| CN109423577B (en) | High-strength multi-phase steel tinning raw plate and manufacturing method thereof | |
| EP3138936B1 (en) | High-strength steel sheet and production method therefor | |
| CN102766800A (en) | Steel for hard tinplate bottle caps and production method thereof | |
| CN103320685A (en) | Hard tinned sheet steel and its production method | |
| EP2902507A1 (en) | Manufacturing method of common grain-oriented silicon steel with high magnetic induction | |
| CN104805352A (en) | Production method of cold-rolled steel plate for electro-galvanization | |
| CN103526113B (en) | A kind of antifungal gene structure precoated steel plate and production method thereof | |
| CN104060159A (en) | Base plate of double-cold-rolled tinned plate and manufacturing method thereof, and double-cold-rolled tinned plate | |
| CN105177411A (en) | Boracic cold-rolled enamel steel suitable for continuous annealing production and manufacturing method of boracic cold-rolled enamel steel | |
| CN104862592A (en) | Super deep-draw fingerprint resistant electro-galvanized plate and manufacturing method thereof | |
| CN103602884A (en) | Ultralow-carbon aluminum-killed steel plate and production method thereof | |
| CN109694990A (en) | Light phase transition inducing plasticity steel and its production method with good strong plasticity | |
| CN110438312A (en) | A method of improving cold-rolling deep-punching steel elongation and strain hardening exponent n value | |
| CN101358318A (en) | Ingredient design of good combination property and non-oriented electrical steel and preparation method | |
| CN110714170B (en) | High-nitrogen cold-rolled steel and preparation method and application thereof | |
| CN108796381B (en) | Steel plate with high axial bearing capacity and excellent formability for tank and manufacturing method thereof | |
| WO2019062732A1 (en) | Cold-rolled magnetic lamination steel with excellent magnetic properties and manufacturing method therefor | |
| CN109136777A (en) | A kind of secondary cold-rolling tin plate and its production method | |
| CN111690871B (en) | Hot-rolled steel plate for cold-rolled electro-galvanized steel plate and manufacturing method | |
| CN102639740A (en) | Steel sheet for cans and method for producing same | |
| CN103849816B (en) | Be applicable to gaily decorated basket bucket with having resisted stupefied soft tin-plate | |
| CN108823498A (en) | A kind of automobile hot galvanizing low-alloy high-strength steel and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120905 |