CN1094756A - Roller sleeve steel for aluminium casting-rolling mill - Google Patents
Roller sleeve steel for aluminium casting-rolling mill Download PDFInfo
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- CN1094756A CN1094756A CN 93112425 CN93112425A CN1094756A CN 1094756 A CN1094756 A CN 1094756A CN 93112425 CN93112425 CN 93112425 CN 93112425 A CN93112425 A CN 93112425A CN 1094756 A CN1094756 A CN 1094756A
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Abstract
The present invention relates to the roll sleeve of cast-rolling aluminum volume.A kind of material of roller sleeve steel and smelting thereof, forging and pressing, process of thermal treatment method are provided, make the life-span of roller shell under reasonable working conditions be no less than 3000～4000 tons of aluminum coiled sheets, and the good heat conductivity of material, can improve the productivity of continuous casting milling train and the inner quality of aluminium plate in coil, cut down finished cost.Roller sleeve steel of the present invention is that Cr-Mo-V is a steel, and its element cooperation is intended to improve anti-temper resistance and hot strength, helps thermal fatigue resistance, and achieve the above object through long 400～600 ℃ of tempering process.
Description
The present invention relates to sleeved roll, or metal continuous casting continuous rolling technology: the roll sleeve material of casting aluminium particularly.
The beginning of the eighties, abroad generally to use and aluminium cast continuously and aluminium continuous casting rolling that the hot rolling two-step is integrated is produced aluminium plate in coil, this method not only can boost productivity, energy-conservation, can also improve the quality of aluminium.The a lot of aluminum fabrication plants of China have been introduced this continuous casting, roll in this casting and rolling machine is core and crucial attrition component, generally adopting the middle part is roller core, skin is a roller shell, the composite structure of middle logical cooling fluid, roller shell is worked under the operating mode of the periodic hurried variation of temperature, therefore except that the mechanical property and wear resisting property of general roll, good thermal fatigue resistance also need be arranged, prevent the performance that cracks.The domestic present roller shell that uses is made as the PCrNi3MoV gun-steel, use the longevity to make and be about 1500～2500 tons of aluminum coiled sheets, be 2000～3000 tons Japanese roller shell work-ing life of import, the Mo22 steel roller shell life-span of France Crousor company introduction can reach 4000 tons, home made materials is except work-ing life is not long, because heat conductivility is not good, the rotating speed of casting roller is carried not high, cause aluminium crystal grain comparatively thick, the aluminium plate in coil difficult quality improves, simultaneously because temperature drift during roller shell work causes the clamping force deficiency between roller shell and roller core, between the two slip is serious in the use.The import roller shell then costs an arm and a leg, A level and B level steel roller shell as Japan, though work-ing life is slightly long than home-made, price increases exponentially, the Mo22 steel of France, introducing the life-span can reach 4000 tons, but cost an arm and a leg, cause rolling cost to improve greatly, aluminum fabrication plant generally all is difficult to bear, therefore press for a kind of homemade new steel grade of trial-production, satisfy the matching used needs of growing aluminium casting-rolling mill.According to external reported in literature in the recent period, to disclose flat 4-124255 disclosed for the resistance to thermal cracking that improves roller shell can be speciallyyed permit out hope as Japan, employing forms the molten layer of penetrating of the high nichrome of one deck outside roller shell, and to coat one deck 11～17Cr-Ni be the method that the composite bed of steel is strengthened roll sleeve, but these materials and method all are not suitable for being used for making the roller shell of aluminium casting-rolling mill, and rich chromium cast iron, high alloy iron, Adamite and the rapid steel based material that the routine of introducing on the document is used all can not obtain satisfied result of use.
The purpose of this invention is to provide a kind of material of roller sleeve steel and smelting, forging and pressing, the heat-treatment technology method of roller shell, improve the work-ing life of aluminium casting roller shell.Under reasonable working conditions, the cast-rolling aluminum volume of every pair of roller shell production is no less than 3000～4000 tons, and the heat conductivility of material is better, can improve the productivity and the inner quality of cast-rolling aluminum volume, can cut down finished cost greatly simultaneously.
The objective of the invention is by smelting a kind of Chemical Composition (weight percent) is C 0.10～0.40%, Si 0.10～0.50%, Mn 0.20～0.70%, Cr 1.00～4.00%, Mo 0.20～2.00%, V 0.05～0.50%, and all the other are the GT1200 steel of iron and other impurity, and realize through long 400～600 ℃ of tempering process.The GT1200 steel is that Cr-Mo-V is a steel, and its element cooperation is intended to improve anti-temper resistance and hot strength, helps improving thermal fatigue resistance, also contains Al≤0.01, Cu≤0.25 and Ni≤0.30 in iron and other impurity.Tempering time is 5～30 hours.
Accompanying drawing 1 is to forge the back to amplify 1000 times metallographic structure, and accompanying drawing 2 is the metallographic structure of 1000 times of amplifications after the modifier treatment.
The embodiment of the invention 1.
The melting of steel: in 40 tons of electric arc furnace, make steel fine fodder 50%, SiCa deoxidation, then in 60 tons of ladle refining furnaces, carry out the vacuum argon blowing refining, mouth of a river diameter phi 60mm, 41 tons on molten steel, vacuum tightness 133Pa, 100 liters/minute of argon flow amounts, effectively deaeration time is 12 minutes, obnoxious flavour is mingled with non-metallic inclusion further reduces, and the composition of fine setting steel, make to obtain satisfied terminal point composition, molten steel is cast steel ingot in atmosphere, and the chemical component weight per-cent of finished product is C0.25, Si0.26, Mn0.40, P0.017, S0.006, Cr1.50, Mo0.80, V0.10, [H] 1.9ppm.
The forging and pressing of steel and thermal treatment, the steel ingot Heating temperature is 1250 ℃, is split into round base, jumping-up, perforation, pulling and reaming, totally 4 fire are finished.Forge 870 ℃ of heat back one time.Secondary is cold excessively, 650 ℃ of nodularization tempering.Carry out UT (Ultrasonic Testing) after the thermal treatment.
Final thermal treatment: be modifier treatment, promptly 860 ℃ are quenched and double tempering.
Embodiment 2.
The melting of steel: in 40 tons of electric arc furnace, smelt, adopt the SiCa deoxidation, refining in 60 tons of ladle refining furnaces, mouth of a river diameter phi 60mm, 36 tons on molten steel, vacuum tightness 130～180Pa, effectively deaeration time is 15 minutes, 38～57 liters/minute of argon flow amounts, 11.4 tons * 3 of ingot molds, finished product chemical ingredients C0.27, Si0.31, Mn0.46, P0.020, S0.010, Cr2.00, Mo0.60, V0.14, [H] 2.5ppm.
All the other are identical with embodiment 1.
After modifier treatment, embodiment 1 got longitudinal test piece stretches and shock test, its result is as follows
| Test piece number (Test pc No.) | б bMPa | б SMPa | δ5% | ψ | αkU?J/cm | HB |
| 35 35 36 36 | 1417 1423 1445 1441 | 1174 1235 1218 1255 | 13.5 12.3 12.1 12.1 | 40.2 39.2 40.2 39.2 | 40 44 36 41 43 40 41 35 | 410 410 420 391 402 426 |
Forging the back optics metallurgical is tiny and uniform particulate state perlite, and Fig. 1 is the photo of 1000 times of amplifications, and the metallographic structure after the modifier treatment is a tempered sorbite, and Fig. 2 amplifies 1000 times photo.
Roller sleeve steel of the present invention is after the aluminum fabrication plant practical probation of Shanghai, compare with Japanese KANTOARMCOT244 roller shell, the latter uses and just occurred circumferential crack in 2～3 days, roller shell of the present invention then uses after 6 days and circumferential crack just occurs, can reach 4000 tons its service life, and in using and the slip between the roller core few, and Japanese import have certain slippage, domestic gun-steel slippage will reach more than 90 degree.
Claims (4)
1, a kind of roller sleeve steel for aluminium casting-rolling mill, its chemical component weight per-cent are C0.10～0.40%, Si0.10～0.50%, Mn0.20～0.70%, Cr1.00～4.00%, Mo0.20～2.00%, V0.05～0.50%, and all the other are iron and other impurity.
2,, it is characterized in that in fusion process, adopting the SiCa deoxidation according to the said roller sleeve steel for aluminium casting-rolling mill of claim 1; Molten steel carries out vacuum refinement, and the method for fine setting Chemical Composition.
3, according to the said roller sleeve steel for aluminium casting-rolling mill of claim 1, it is characterized in that also containing in all the other compositions a spot of aluminium, copper and mickel, its weight percent is respectively≤0.01 ,≤0.25 and≤0.30.
4, according to the said roller sleeve steel for aluminium casting-rolling mill of claim 1, it is characterized in that last thermal treatment is modifier treatment, promptly 850 °～950 ° quenchings and 400 °～600 ° high temperings, it is cold to be incubated after 5～30 hours stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112425 CN1094756A (en) | 1993-05-06 | 1993-05-06 | Roller sleeve steel for aluminium casting-rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93112425 CN1094756A (en) | 1993-05-06 | 1993-05-06 | Roller sleeve steel for aluminium casting-rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1094756A true CN1094756A (en) | 1994-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93112425 Pending CN1094756A (en) | 1993-05-06 | 1993-05-06 | Roller sleeve steel for aluminium casting-rolling mill |
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| CN (1) | CN1094756A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956137A (en) * | 2010-10-12 | 2011-01-26 | 衡阳华菱钢管有限公司 | Seamless steel tube for manufacturing hollow core rod and production method |
| CN101798660B (en) * | 2010-01-11 | 2011-07-20 | 段岳君 | Method for refining, metamorphosing and casting cold roll steel by casting instead of forging |
| CN102126121A (en) * | 2010-12-08 | 2011-07-20 | 扬州诚德重工有限公司 | New process combining forging and rolling |
| CN101720263B (en) * | 2007-04-19 | 2012-08-29 | 本田技研工业株式会社 | Method of casting |
| CN104593691A (en) * | 2014-12-26 | 2015-05-06 | 中钢集团邢台机械轧辊有限公司 | Roller sleeve for large forged alloy steel carrying roller and manufacturing method thereof |
| CN104928594A (en) * | 2015-05-29 | 2015-09-23 | 中钢集团邢台机械轧辊有限公司 | Aluminum cast roller sleeve with thermal fatigue resistance performance and manufacturing method of roller sleeve |
| CN105543451A (en) * | 2016-01-20 | 2016-05-04 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for inlaid backup roll sleeve |
| CN110699593A (en) * | 2019-11-28 | 2020-01-17 | 江苏环宇冶金科技有限公司 | Melting device of 32Cr3Mo1V steel casting roll sleeve and production process of steel casting roll sleeve |
| CN112845604A (en) * | 2020-12-26 | 2021-05-28 | 无锡天德金属制品有限公司 | Application technology of roll sleeve inner hole type through core water tank in high-strength aluminum alloy rolling process |
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
-
1993
- 1993-05-06 CN CN 93112425 patent/CN1094756A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101720263B (en) * | 2007-04-19 | 2012-08-29 | 本田技研工业株式会社 | Method of casting |
| CN101798660B (en) * | 2010-01-11 | 2011-07-20 | 段岳君 | Method for refining, metamorphosing and casting cold roll steel by casting instead of forging |
| CN101956137A (en) * | 2010-10-12 | 2011-01-26 | 衡阳华菱钢管有限公司 | Seamless steel tube for manufacturing hollow core rod and production method |
| CN101956137B (en) * | 2010-10-12 | 2013-03-20 | 衡阳华菱钢管有限公司 | Seamless steel tube for manufacturing hollow core rod and production method |
| CN102126121A (en) * | 2010-12-08 | 2011-07-20 | 扬州诚德重工有限公司 | New process combining forging and rolling |
| CN102126121B (en) * | 2010-12-08 | 2013-02-27 | 扬州诚德重工有限公司 | New process combining forging and rolling |
| CN104593691A (en) * | 2014-12-26 | 2015-05-06 | 中钢集团邢台机械轧辊有限公司 | Roller sleeve for large forged alloy steel carrying roller and manufacturing method thereof |
| CN104593691B (en) * | 2014-12-26 | 2017-03-22 | 中钢集团邢台机械轧辊有限公司 | Roller sleeve for large forged alloy steel carrying roller and manufacturing method thereof |
| CN104928594A (en) * | 2015-05-29 | 2015-09-23 | 中钢集团邢台机械轧辊有限公司 | Aluminum cast roller sleeve with thermal fatigue resistance performance and manufacturing method of roller sleeve |
| CN104928594B (en) * | 2015-05-29 | 2017-09-29 | 中钢集团邢台机械轧辊有限公司 | The manufacture method of aluminium Casting Roller set with thermal fatigue resistance |
| CN105543451A (en) * | 2016-01-20 | 2016-05-04 | 中钢集团邢台机械轧辊有限公司 | Heat treatment method for inlaid backup roll sleeve |
| CN110699593A (en) * | 2019-11-28 | 2020-01-17 | 江苏环宇冶金科技有限公司 | Melting device of 32Cr3Mo1V steel casting roll sleeve and production process of steel casting roll sleeve |
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
| CN112845604A (en) * | 2020-12-26 | 2021-05-28 | 无锡天德金属制品有限公司 | Application technology of roll sleeve inner hole type through core water tank in high-strength aluminum alloy rolling process |
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