CN100529140C - Method for producing cold rolling domestic appliance plate using cover type oven - Google Patents
Method for producing cold rolling domestic appliance plate using cover type oven Download PDFInfo
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- CN100529140C CN100529140C CNB200710010177XA CN200710010177A CN100529140C CN 100529140 C CN100529140 C CN 100529140C CN B200710010177X A CNB200710010177X A CN B200710010177XA CN 200710010177 A CN200710010177 A CN 200710010177A CN 100529140 C CN100529140 C CN 100529140C
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- household electrical
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Abstract
The invention relates to a method for preparing cold rolled household electrical appliance sheet with bell-type furnace, which in detail relates to a household electrical appliance sheet with high yield ration and high percentage of elongation mainly by controlling steel chemical component and adjusting bell- type funance annealing process. The comprised chemical component and weight percentage are follows: C 0.03-0.15, Si<=0.034, Mn0.17-0.65, P<=0.025, S<=0.02, Als0.02-0.055, N<=0.006 and Nb<=0.03. The annealing process comprises: temperature 200- 400 Deg. C, time 1- 2 hours; 400- 600 Deg. C, 4- 5 hours; 600- 710 Deg. C, 4- 6 hours; thermal insulating at 710 Deg. C; 710- 670 Deg. C, 3- 4hours; thermal insulating at 670 Deg. C for 3- 5 hours; water injecting at 400- 300 Deg. C; tapping temperature is 100- 50 Deg. C. The performance of prepared cold rolled household electrical appliance sheet reaches: yield strength 304 Mpa; strength for extension 379 Mpa, elongation 30%, rigidity HRB 63, and increased income of over100 yuan/ t.
Description
Technical field
The invention belongs to a kind of cold-reduced sheet batch annealing, is a kind of method of producing cold rolling family electroplax with batch annealing specifically.
Background technology
At present, China has become principal home's electrical appliance manufacturing nation in the world.Wherein the output with the more main household appliances of steel such as refrigerator, washing machine, air-conditioning etc. has entered prostatitis, the world.But because China's cold rolled sheet production technology is relatively also relatively backward, the cold rolled sheet quality product is relatively poor and output is less, is difficult to satisfy the growing demand to the especially tame electroplax of cold rolled sheet.So household electrical appliances panel for a long time, particularly high-grade household electrical appliances panel relies on import mostly.Though take a turn for the better to some extent in recent years, do not solve yet at all.Therefore, research and development and stable mass production can satisfy the high-grade household electrical appliances panel that the user is badly in need of important role and meaning.
Yet, because the household electrical appliances panel not only requires higher surface quality and plate shape preferably, also must have performance index such as higher yield tensile ratio and certain rigidity and unit elongation, therefore the difficulty of production having relatively high expectations especially to annealing process.At present domestic have only Baosteel can produce the household electrical appliances panel, and adopt continuous annealing furnace production.Because the width that cold rolling family electroplax needs is narrower, and the continuous annealing furnace that Anshan iron and steel plant is built design is very wide, produces the narrow material of this kind will cause cost to improve, and economic benefit is impaired.Therefore adapt to market demand, producing cold rolling family electroplax with bell furnace just becomes a problem that needs to be resolved hurrily.And do not see the pertinent data and the report of this respect up to now as yet.
Summary of the invention
Purpose of the present invention is exactly in order to overcome this difficult problem, is intended to chemical ingredients and adjustment annealing process by the control steel, and it is qualified to provide the enough bell furnaces of a kind of energy to produce performance, the method for superior in quality cold rolling household electrical appliances panel.
For this reason, the present invention has taked following technical scheme:
A kind of method of producing cold rolling family electroplax with bell furnace, its major technique measure are the chemical ingredientss of control steel and adjust batch annealing.
The chemical ingredients mass percentage content of steel is:
C 0.03～0.15, Si≤0.034, and Mn 0.17～0.65, P≤0.025, S≤0.02, Als 0.020～0.055, N≤0.006, Nb≤0.03, surplus is Fe and trace impurity.
The batch annealing system is:
According to groping, preferentially recommend the chemical ingredients mass percentage content of steel to be with the practice of bell furnace production man electroplax:
C 0.09～0.11, Si≤0.03, and Mn 0.25～0.27, P≤0.02, S≤0.015, Als0.03～0.036, N≤0.002, Nb≤0.016, remainder is Fe and impurity.
According to above-mentioned method of producing tame electroplax with bell furnace, preferential annealing process system of recommending is:
Because the present invention has taked aforesaid method, thereby overcome the difficult problem that batch annealing is difficult to produce yield tensile ratio tame electroplax up to standard, in the purpose that realizes producing the qualified cold rolling household electrical appliances panel of every performance index with bell furnace, when satisfying the working conditions requirement of household electrical appliances manufacturer, improved economic benefit, per ton with additional income more than 100 yuan.
After testing, its every performance index can reach:
Yield strength: 305MPa, tensile strength: 379MPa, unit elongation: 30%, hardness: HRB63.
Embodiment
Embodiment 1:
Cold rolling roll bending chemical ingredients mass percent is: C 0.08, and Si 0.024, and Mn 0.50, and P 0.017, and S 0.005, and Als 0.05, and N 0.004, and Nb 0.03, and surplus is Fe and trace impurity.
The batch annealing system of taking is:
Press the shove charge of bell furnace ordinary method, progressively temperature is raised to 200 ℃ after installing
With 1.5h temperature is risen to 400 ℃ by 200 ℃; With 5h temperature at the uniform velocity is raised to 600 ℃ again; Temperature slowly rises to 710 ℃ behind the 5h; Be incubated 6h continuously at 710 ℃ then; Slowly behind the cooling 3h, make temperature reduce to 670 ℃; Lower the temperature behind the insulation 4h; After temperature is reduced to 400 ℃, the coiled sheet water spray after annealing; After reducing to 50 ℃, temperature comes out of the stove at last.
Embodiment 2:
The mass percentage content of coiled sheet chemical ingredients is: C0.10, and Si0.03, Mn0.26, P0.02, S0.010, Als0.036, N0.0018, Nb0.016, surplus is Fe and trace impurity.
The annealing process system of selecting for use is:
The chien shih temperature is elevated to 400 ℃ fast during with 2h; At the uniform velocity be warming up to 600 ℃ through 4h; Slowly heat up behind the 4h and reach 710 ℃; At 710 ℃ of insulation 8h; Slowly lower the temperature 3h to 670 ℃ insulation 5h afterwards; Water spray is handled when cooling to 350 ℃ again; After temperature is reduced to 70 ℃, annealed sheet is rolled out stove.
Carry out mentioned component and annealing schedule, all can obtain the cold rolling household electrical appliances panel of yield tensile ratio 0.80, unit elongation 30%, can satisfy user's high-yield-ratio fully and than the requirement of high-elongation.
Claims (3)
1, a kind of method of producing cold rolling family electroplax with cover annealing is characterized in that, the chemical ingredients of control steel and adjustment batch annealing, and the chemical ingredients mass percentage content of steel is:
C0.03～0.15, Si≤0.034, Mn0.17～0.65, P≤0.025, S≤0.02, Als0.020～0.055, N≤0.006, Nb≤0.03, surplus is Fe and trace impurity.
The batch annealing system is:
2, the method for tame electroplax is produced in cover annealing according to claim 1, it is characterized in that, recommend the chemical ingredients mass percentage content of steel to be: C 0.09～0.11, Si≤0.03, Mn 0.25～0.27, P≤0.02, S≤0.015, Als0.03～0.036, N≤0.002, Nb≤0.016.
3, the method for tame electroplax is produced in cover annealing according to claim 1, it is characterized in that, the annealing process system of recommendation is:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710010177XA CN100529140C (en) | 2007-01-25 | 2007-01-25 | Method for producing cold rolling domestic appliance plate using cover type oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200710010177XA CN100529140C (en) | 2007-01-25 | 2007-01-25 | Method for producing cold rolling domestic appliance plate using cover type oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101008067A CN101008067A (en) | 2007-08-01 |
| CN100529140C true CN100529140C (en) | 2009-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200710010177XA Expired - Fee Related CN100529140C (en) | 2007-01-25 | 2007-01-25 | Method for producing cold rolling domestic appliance plate using cover type oven |
Country Status (1)
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| CN (1) | CN100529140C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892418B (en) * | 2010-09-01 | 2011-12-21 | 武汉钢铁(集团)公司 | Corrosion-resistant soft cold-rolling tin plate and production method thereof |
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2007
- 2007-01-25 CN CNB200710010177XA patent/CN100529140C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101008067A (en) | 2007-08-01 |
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Granted publication date: 20090819 Termination date: 20190125 |