CN104259781B - The manufacture method of cargo train compartment aluminum alloy plate materials - Google Patents
The manufacture method of cargo train compartment aluminum alloy plate materials Download PDFInfo
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- CN104259781B CN104259781B CN201410480786.1A CN201410480786A CN104259781B CN 104259781 B CN104259781 B CN 104259781B CN 201410480786 A CN201410480786 A CN 201410480786A CN 104259781 B CN104259781 B CN 104259781B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets
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Abstract
The present invention relates to a kind of manufacture method of cargo train compartment aluminum alloy plate materials, including step：Melting, refining and degasification, casting, sawing and milling face, heating, hot rolling, roll straightening and crosscutting, accurate sawing.Preparation method technique of the present invention is rigorous, prepares that corrosion-resistant products obtained therefrom, good product performance, uniformity are good, properties of product are stable.
Description
【Technical field】
The present invention relates to a kind of manufacture method of aluminum alloy plate materials, more particularly to a kind of cargo train compartment aluminium alloy plate
The manufacture method of material.
【Background technology】
Lightweight has turned into the development trend of rail vehicle transportation, and aluminum freight is the light-weighted effective way of freight
One of, following weak point in the prior art be present in cargo train compartment aluminum alloy plate materials：Technique is coarse to be easily caused surface
Wiping scratches, viscous aluminium is serious, and hot rolling blank quality is bad, properties of product -- and especially corrosion resistance is unstable, lack of homogeneity, product
Performance has much room for improvement.
【The content of the invention】
It is an object of the invention to provide the cargo train car that a kind of technique is rigorous, good product performance, properties of product are stable
The manufacture method of railway carriage or compartment aluminum alloy plate materials, to solve, technique is coarse in the prior art, properties of product are bad, properties of product are unstable
The problem of.
The technical solution adopted by the present invention is：A kind of manufacture method of cargo train compartment aluminum alloy plate materials, including such as
Lower step：
A. melting, refining and degasification：Every elemental composition by 5083 aluminium alloy cast ingots are produced feed intake and melting, melts
It is 1100 DEG C that furnace gas temperature is melted during refining, and melt temperature should be maintained between 700~750 DEG C, converter temperature control 735~
Between 745 DEG C, then it is transferred to holding furnace and is refined, refining temperature is 720~730 DEG C, and refinery gas is nitrogen chlorine gaseous mixture, essence
The refining time is 40min, after standing 30min after refining, adds titanium silk, addition 0.2%, is carried out using chlorine argon mixture gas
After line degasification, Na%≤0.0005%, hydrogen content≤0.25ml/100gAl aluminium are obtained；
B. cast：Gained aluminium after degasification is transferred to forging, is 368~378 DEG C in casting temperature, monolithic ingot casting cooling water
Measure as 820~1300lpm, casting speed obtains thickness in the environment of being 45~48mm/min be 520~650mm, and width is
1350~2520mm ingot casting；
C. sawing and milling face：With sawing machine sawing ingot casting slag inclusion, crackle and Partial Resection in irregular shape, and send end to end
To face milling machine milling face, ＞ 8mm, side milling face amount ＞ 5mm are measured in big facing cut face；
D. heat：Ingot casting behind milling face is sent into heating furnace to be heated, furnace gas temperature is 550~600 DEG C, ingot casting
Temperature be 470~500 DEG C, be incubated 2~3 hours；
E. hot rolling：Gained ingot casting is 450~490 DEG C in start rolling temperature after heating, and finishing temperature is at 360~450 DEG C
Roughing is carried out, is transferred to finish rolling after roughing, finish rolling start rolling temperature is 350~440 DEG C, through 3~5 frame continuous rollings into finished product thickness
And batch, it is 18~22MPa to batch tensile stress, and finishing temperature obtains 6 ± 0.3mm thickness at 235~270 DEG C after hot rolled
The 8mm based plates of 6mm based plates or 8 ± 0.4mm thickness；
F. roll straightening and crosscutting：By after hot rolling gained sheet material obtained after roll leveller is aligned longitudinal unevenness≤
0.3%, the 6mm based plates of horizontal unevenness≤0.4%, or longitudinal unevenness≤0.2%, the 8mm templates of horizontal unevenness≤0.4%
Material, it is sheet material is crosscutting to predetermined length after aligning；
G. accurate sawing：Gained sheet material, which is delivered at precision sawing machine, after crosscutting is sawn to finished product preset width and length, obtains
To tensile strength >=305MPa, yield strength >=215MPa, the cargo train compartment aluminum alloy plate materials of elongation percentage >=12% into
Product.
Further technical scheme is the present invention：Chlorine content is 5~10% in the nitrogen chlorine mixed gas in step.
Further technical scheme is the present invention：The flow of the nitrogen chlorine mixed gas is 4~5m3/h in step.
Further technical scheme is the present invention：The species of the titanium silk is Al in step5Ti0.2B。
Further technical scheme is the present invention：The ingot casting treats the time≤48h in heating furnace in step D.
Further technical scheme is the present invention：The finish rolling described in step E is after being succeeded by threading, by band between frame
Material cooling manifold injection emulsion to strip surface is cooled, and coordinates adjustment mill milling speed, make mill speed 1~
Fluctuated in the range of 2.5m/s.
Further technical scheme is the present invention：The tolerance of finished product preset width described in step G is ± 2mm, production board
The cornerwise predetermined length tolerance≤8mm of material two.
The beneficial effects of the invention are as follows：Because using above-mentioned technical proposal, preparation method technique of the present invention is rigorous, system
Standby products obtained therefrom is corrosion-resistant, good product performance, uniformity is good, properties of product are stable.
【Embodiment】
With reference to embodiment, the present invention is described further.
The invention provides a kind of manufacture method of cargo train compartment aluminum alloy plate materials, comprise the following steps：
A. melting, refining and degasification：Every elemental composition by 5083 aluminium alloy cast ingots are produced feed intake and melting, melts
It is 1100 DEG C that furnace gas temperature is melted during refining, and melt temperature should be maintained between 700~750 DEG C, converter temperature control 735~
Between 745 DEG C, then it is transferred to holding furnace and is refined, refining temperature is 720~730 DEG C, and refinery gas is nitrogen chlorine gaseous mixture, essence
The refining time is 40min, after standing 30min after refining, adds titanium silk, addition 0.2%, is carried out using chlorine argon mixture gas
After line degasification, Na%≤0.0005%, hydrogen content≤0.25ml/100gAl aluminium are obtained；
Preferably, melt temperature is 710 DEG C, 720 DEG C or 730 DEG C, and melt temperature is too low, is unfavorable for the dissolving of alloying element
And the discharge of gas, field trash, increase form segregation, cold shut, the tendency for owing casting, can also obtain casting because of rising head shortage of heat
Less than rational feeding；Smelting temperature is too high not only to waste the energy, more seriously because temperature is higher, inhales hydrogen the more, crystal grain
Also thicker, the oxidation of aluminium is more serious, and the scaling loss of alloying elements is also more serious, so as to cause under the mechanical performance of alloy
Drop, casting character and machining property deteriorate, and the effect of Metamorphism treatment weakens, and the air-tightness of casting reduces；
Preferably, count by weight percentage, each element content is the aluminium alloy cast ingot of 5000 series：Si：
0.15%, Fe：0.35%, Cu：0.10%, Mn：0.45%~0.80%, Mg：4.3%~4.70%, Cr：0.05~0.2%,
Na：≤ 0.0005%, Zn：0.2%, Ti：0.10%, Be：0.0005%~0.003%, single impurity≤0.05%, add up to miscellaneous
Matter≤0.15%, remaining is Al；
In another preferable scheme, count by weight percentage, each element contains the aluminium alloy cast ingot of 5000 series
Measure and be：Si：0.15%, Fe：0.35%, Cu：0.10%, Mn：0.45%, Mg：4.5%, Cr：0.05, Na：≤ 0.0005%, Zn：
0.2%, Ti：0.10%, Be：0.001%, single impurity≤0.05%, add up to impurity≤0.15%, remaining is Al；
In another preferable scheme, count by weight percentage, each element contains the aluminium alloy cast ingot of 5000 series
Measure and be：Si：0.15%, Fe：0.35%, Cu：0.10%, Mn：0.50%~0.70%, Mg：4.40%~4.60%, Cr：
0.10%, Na：≤ 0.0005%, Zn：0.2%, Ti：0.10%, Be：0.003%, single impurity≤0.05%, add up to impurity
≤ 0.15%, remaining is Al；
B. cast：Gained aluminium after degasification is transferred to forging, is 368~378 DEG C in casting temperature, monolithic ingot casting cooling water
Measure as 820~1300lpm, casting speed obtains thickness in the environment of being 45~48mm/min be 520~650mm, and width is
1350~2520mm ingot casting；Preferably, cooling water inflow is 1000lpm or 1100lpm；
C. sawing and milling face：With sawing machine sawing ingot casting slag inclusion, crackle and Partial Resection in irregular shape, and send end to end
To face milling machine milling face, ＞ 8mm, side milling face amount ＞ 5mm are measured in big facing cut face；Because the ingot casting of semi-continuous casting, surface are different
Degree there is the defects of loose, shrinkage cavity, stomata, slag inclusion, pile displacement, it is necessary to by face milling machine by the portion of surface existing defects
Divide mill off, if milling face amount is too small, will can not be got rid of part the defects of ingot casting well, the milling face amount control in the present embodiment
Part the defects of ingot casting can be got rid of, will not both caused between above range and product size technique predetermined value by system just
Unnecessary loss, the defects of ingot casting, will not also be taken in follow-up process；
D. heat：Ingot casting behind milling face is sent into heating furnace to be heated, furnace gas temperature is 550~600 DEG C, ingot casting
Temperature be 470~500 DEG C, be incubated 2~3 hours；Insulation can ensure that temperature of the ingot casting from center portion to surface is uniform in 2~3 hours,
Avoid when rolled piece is rolled down to center portion in subsequent handling because non-uniform temperature ftractures；
E. hot rolling：Gained ingot casting is 450~490 DEG C in start rolling temperature after heating, and finishing temperature is at 360~450 DEG C
Roughing is carried out, is transferred to finish rolling after roughing, finish rolling start rolling temperature is 350~440 DEG C, through 3~5 frame continuous rollings into finished product thickness
And batch, it is 18~22MPa to batch tensile stress, and finishing temperature obtains 6 ± 0.3mm thickness at 235~270 DEG C after hot rolled
The 8mm based plates of 6mm based plates or 8 ± 0.4mm thickness；
Preferably, finish rolling finishing temperature is 245 DEG C or 255 DEG C, and finishing temperature is to ensure that the important work of product mechanical property
Skill parameter, it can ensure that product has good tensile strength, yield strength and elongation percentage under the finishing temperature, while at this
At a temperature of the load that is born of milling train it is again not too large, equipment will not be caused to damage；
F. roll straightening and crosscutting：By after hot rolling gained sheet material obtained after roll leveller is aligned longitudinal unevenness≤
0.3%, the 6mm based plates of horizontal unevenness≤0.4%, or longitudinal unevenness≤0.2%, the 8mm templates of horizontal unevenness≤0.4%
Material, it is sheet material is crosscutting to predetermined length after aligning；
G. accurate sawing：Gained sheet material, which is delivered at precision sawing machine, after crosscutting is sawn to finished product preset width and length, obtains
To tensile strength >=305MPa, yield strength >=215MPa, the cargo train compartment aluminum alloy plate materials of elongation percentage >=12% into
Product.
Chlorine content is 5~10% in nitrogen chlorine mixed gas described in step A.
The flow of nitrogen chlorine mixed gas described in step A is 4~5m3/h.
The species of titanium silk described in step A is Al5Ti0.2B。
Ingot casting treats the time≤48h in heating furnace described in step D；Ensure ingot casting in heating process in the stove, crystal grain
Will not be excessively thick, if greater than 48H, crystal grain easily grows excessively thick.
Finish rolling described in step E is by after threading success, spraying emulsion to band by band cooling manifold between frame
Surface is cooled, and coordinates adjustment mill milling speed, mill speed is fluctuated in the range of 1~2.5m/s；Pass through the party
Formula, control finishing temperature is at 235~270 DEG C.
Existing band finishing temperature control mode, the breast mainly cooled down by the roll gap lubrication and roll that control milling train
What liquid measure and mill speed were realized on single-frame double-coiling milling train, its shortcoming is that the temperature of entire volume product is extremely uneven,
Head and tail temperature difference is big, mechanical heterogeneity, but step E of the present invention is mainly realized on the Continuous mill train of 3~5 frames, is passed through
Band cooling manifold injection emulsion to the strip surface being arranged between mm finishing mill unit frame is cooled, and emulsion injection pressure
It is adjustable, and coordinate adjustment mill milling speed, head and tail temperature difference is can be controlled within ± 5 DEG C, and entire volume temperature homogeneity is good, makes entire volume
The mechanical property uniformity of product get a qualitative improvement.
The tolerance of finished product preset width described in step G is ± 2mm, the cornerwise predetermined length tolerance of finished product sheet material two≤
8mm。
Preparation method technique of the present invention is rigorous, prepare corrosion-resistant products obtained therefrom, good product performance, uniformity it is good, production
Product stable performance.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (6)
1. the manufacture method of a kind of cargo train compartment aluminum alloy plate materials, it is characterised in that comprise the following steps：
A. melting, refining and degasification：Feed intake and melting by every elemental composition of 5083 aluminium alloy cast ingots of production, during melting
It is 1100 DEG C to melt furnace gas temperature, and melt temperature should be maintained between 700~750 DEG C, and converter temperature control is at 735~745 DEG C
Between, then it is transferred to holding furnace and is refined, refining temperature is 720~730 DEG C, and refinery gas is nitrogen chlorine gaseous mixture, during refining
Between be 40min, after refining stand 30min after, add titanium silk, addition 0.2%, removed online using chlorine argon mixture gas
After gas, sodium element content≤0.0005%, hydrogen content≤0.25ml/100gAl liquid aluminium are obtained；
B. cast：Gained aluminium after degasification is transferred to casting, is 368~378 DEG C in casting temperature, monolithic ingot casting cooling water inflow is
820~1300lpm, casting speed obtains thickness in the environment of being 45~48mm/min be 520~650mm, width is 1350~
2520mm ingot casting；
C. sawing and milling face：With sawing machine by ingot casting slag inclusion, crackle and Partial Resection in irregular shape, and deliver to milling face end to end
＞ 8mm, side milling face amount ＞ 5mm are measured in machine milling face, big facing cut face；
D. heat：Ingot casting behind milling face is sent into heating furnace to be heated, furnace gas temperature is 550~600 DEG C, the temperature of ingot casting
Spend for 470~500 DEG C, be incubated 2~3 hours；
E. hot rolling：Gained ingot casting is 450~490 DEG C in start rolling temperature after heating, and finishing temperature is to be carried out at 360~450 DEG C
Roughing, finish rolling is transferred to after roughing, finish rolling start rolling temperature is 350~440 DEG C, into finished product thickness and is rolled up through 3~5 frame continuous rollings
Take, it is 18~22MPa to batch tensile stress, and for finishing temperature at 235~270 DEG C, the finish rolling is after being succeeded by threading, by frame
Between band cooling manifold injection emulsion to strip surface cooled, and coordinate adjustment mill milling speed, make mill speed
Fluctuated in the range of 1~2.5m/s, the 6mm based plates of 6 ± 0.3mm thickness or the 8mm of 8 ± 0.4mm thickness are obtained after hot rolled
Based plate；
F. roll straightening and crosscutting：Gained sheet material after hot rolling is obtained into longitudinal unevenness≤0.3% after roll leveller is aligned,
The 6mm based plates of horizontal unevenness≤0.4%, or longitudinal unevenness≤0.2%, the 8mm templates of horizontal unevenness≤0.4%
Material, it is sheet material is crosscutting to predetermined length after aligning；
G. accurate sawing：Gained sheet material, which is delivered at precision sawing machine, after crosscutting is sawn to finished product preset width and length, is resisted
Tensile strength >=305MPa, yield strength >=215MPa, the cargo train compartment aluminum alloy plate materials finished product of elongation percentage >=12%.
2. the manufacture method of cargo train compartment as claimed in claim 1 aluminum alloy plate materials, it is characterised in that：In step A
Described in nitrogen chlorine mixed gas chlorine content be 5~10%.
3. the manufacture method of cargo train compartment as claimed in claim 1 aluminum alloy plate materials, it is characterised in that：In step A
Described in the flow of nitrogen chlorine mixed gas be 4~5m3/h。
4. the manufacture method of cargo train compartment as claimed in claim 1 aluminum alloy plate materials, it is characterised in that：In step A
Described in the species of titanium silk be Al5Ti0.2B。
5. the manufacture method of cargo train compartment as claimed in claim 1 aluminum alloy plate materials, it is characterised in that：In step D
Described in ingot casting≤48h is treated the time in heating furnace.
6. the manufacture method of cargo train compartment as claimed in claim 1 aluminum alloy plate materials, it is characterised in that：In step G
The tolerance of the finished product preset width is ± 2mm, the cornerwise predetermined length tolerance≤8mm of finished product sheet material two.
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| CN105018807A (en) * | 2015-07-29 | 2015-11-04 | 广西柳州银海铝业股份有限公司 | Method for manufacturing large-sized 5083 aluminum alloy slab ingot |
| EP3551773B8 (en) | 2016-12-08 | 2022-04-06 | Novelis Koblenz GmbH | Method of manufacturing a wear-resistant aluminium alloy plate product |
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| DE60309711T2 (en) * | 2003-09-26 | 2007-09-13 | Kabushiki Kaisha Kobe Seiko Sho, Kobe | Aluminum alloy forging material with excellent high temperature fatigue strength |
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| CN101481764B (en) * | 2009-02-12 | 2010-09-15 | 郑州明泰实业有限公司 | Aluminum alloy rolled plate and producing method thereof |
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Effective date of registration: 20200420 Address after: 545006 the Guangxi Zhuang Autonomous Region Liuzhou city and the Industrial District Yang Road No. 11 Patentee after: GUANGXI LIUZHOU YINHAI ALUMINUM INDUSTRY Co.,Ltd. Address before: 545000 the Guangxi Zhuang Autonomous Region Liuzhou city and the Industrial District Yang Road No. 11 Co-patentee before: Xu Lei Patentee before: GUANGXI LIUZHOU YINHAI ALUMINUM INDUSTRY Co.,Ltd. |