CN100393451C - Casting process of 3140 flat aluminium alloy ingot - Google Patents
Casting process of 3140 flat aluminium alloy ingot Download PDFInfo
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- CN100393451C CN100393451C CNB2006101650680A CN200610165068A CN100393451C CN 100393451 C CN100393451 C CN 100393451C CN B2006101650680 A CNB2006101650680 A CN B2006101650680A CN 200610165068 A CN200610165068 A CN 200610165068A CN 100393451 C CN100393451 C CN 100393451C
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- 238000005266 casting Methods 0.000 title claims abstract description 152
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 32
- 239000000498 cooling water Substances 0.000 claims abstract description 27
- 238000003723 Smelting Methods 0.000 claims abstract description 16
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000007670 refining Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 23
- 238000007872 degassing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000012806 monitoring device Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 241000220317 Rosa Species 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000005058 metal casting Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 description 7
- 208000037656 Respiratory Sounds Diseases 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003887 surface segregation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 208000013668 Facial cleft Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
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Abstract
The present invention relates to metal casting technology, and is especially casting process of flat aluminum alloy ingot. The casting process includes the following steps: sucking electrolytic aluminum from the electrolytic bath to the smelting furnace and smelting; temperature maintaining and refining of the molten aluminum alloy in the holding furnace, and casting to obtain flat aluminum alloy ingot. The casting process has reasonably regulated casting speed, casting temperature, cooling water flow rate, melt level inside the crystallizer and other technological conditions, raised flat aluminum alloy ingot quality and lowered labor strength of the worker. The present invention is suitable for casting aluminum and aluminum alloy products.
Description
Technical field
The present invention relates to field of metal casting technology, specifically relate to a kind of casting method of 3104 aluminium alloy flat blooms.
Background technology
Aluminium alloy flat bloom is as the raw material of making easy-to-draw tank body, existing aluminium alloy flat bloom Foundry Production equipment is the external slab ingot Casting Equipment of import, because the discharge in the casting, cooling water quality, the difference of media such as water temperature, casting speed, major parameters such as temperature of aluminum liquid do not meet the condition of production plant, chute pre-heating mean difference, aluminium alloy flat bloom by original technical parameter production, often produce the slab ingot crackle, oxide inclusion, flexural deformation, bubble, shrinkage porosite, component segregation, the surface segregation knurl, casting flaws such as grain size is thick, wherein crackle is divided into fire check by kind, cold crack, opsition dependent is divided into big facial cleft line, the facet crackle, ingot tail crackle is divided into entire crack by the extent of injury, localized cracks and harassing and wrecking property crackle etc.Occur a large amount of waste products in the casting, the finished product rate has only 60%, even can't ordinary production.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the deficiency that prior art exists, and provides a kind of in smelting furnace batching, slagging-off, degasification, 3104 aluminium alloy flat bloom casting methods of refine on line in holding furnace refining, the casting process.
Aluminium alloy flat bloom casting method of the present invention is achieved by following technical proposals: the present invention includes smelting furnace, holding furnace, casting chute, distribute chute, described low temperature casting technique step leaves standstill processing for lowering the temperature before pouring into the electrolysis primary aluminum in the smelting furnace from potroom with two-maing ladle, change in the smelting furnace again, melting is handled through preparing burden, stir, skimming, change further degasification in the holding furnace again over to, remove the gred, leave standstill refining treatment, the holding furnace casting position automatic casting that fascinates makes 3104 aluminium alloy flat blooms; Its process conditions are:
A, casting temperature are 725～710 ℃;
B, casting speed are: during casting length 0mm, casting speed is 38mm/min; During casting length 50mm, casting speed 38mm/min; During casting length 317mm, the casting speed linear growth finishes until casting to 60mm/min;
C, cooling water flow: during casting length 0mm, cooling water flow 680m
3/ hr, during casting length 55mm, cooling water flow 680m
3/ hr, during casting length 236mm, the cooling water flow linear growth is to 2604m
3/ hr finishes until casting;
D, crystallizer melt level height: during casting length 0mm, liquid level is 50.0mm, and during casting length 125mm, liquid level is 75.0mm, and during casting length 187mm, liquid level is 82.0mm, and during casting length 467mm, liquid level is 42.0mm.
The present invention's 3104 aluminium alloy flat bloom casting methods have following beneficial effect compared with prior art: because the present invention has rationally adjusted casting speed, casting temperature, cooling water flow, technical conditions such as crystallizer melt level height, the aluminium alloy flat bloom surface of producing does not have face crack, bottom crack, the gate part crackle, the surface slag inclusion, the surface drawing crack, leak aluminium, mass defects such as external foreign matter is pressed into, flat bloom surface segregation knurl is little, the ingot casting smooth surface has effectively improved quality of aluminium alloy flat section ingot, improved the finished product rate, the finished product rate reaches more than 93%, improved the equipment service efficiency simultaneously, the various casting flaws during slab ingot is produced have been reduced, reduced the production cost of slab ingot, 200 yuan of reductions per ton; Reduced slab ingot sawing amount, the milling amount reduces 80%, has improved the lumber recovery of slab ingot, and product percent of pass reaches 100%; Effectively reduce working strength of workers simultaneously.Aluminium alloy flat bloom casting method of the present invention is applicable to domestic and international aluminium and aluminium alloy casting industry.
Description of drawings
The present invention's 3104 aluminium alloy flat bloom casting methods have following accompanying drawing:
Fig. 1 is the present invention's 3104 aluminium alloy flat bloom casting method process flow diagrams;
Fig. 2 is the present invention's 3104 aluminium alloy flat bloom casting method Casting Equipment schematic flow sheets.
1, kettle furnace; 2, chute laser monitoring device; 3, online depassing unit; 4, on-line filtration device; 5, distribute chute; 6, crystallizer; 7, molten aluminum liquid; 8, aluminium flowing-out mouth slew gear; 9, slag case; 10, slag case; 11, casting platform; 12, casting machine top board; 13, casting machine hydraulic cylinder; 14, chute baffle plate; 15, chute baffle plate; 16, dummy bar head; 17, casting chute; 18, smelting furnace.
The specific embodiment
Below in conjunction with drawings and Examples the present invention's 3104 aluminium alloy flat bloom casting method technical schemes are further described.
The present invention includes smelting furnace 18, holding furnace 1 casting chute 17, distribute chute 5, described low temperature casting technique step leaves standstill processing for lowering the temperature before pouring into primary aluminum in the smelting furnace 18 from potroom with the electrolysis of two-maing ladle, change over to again in the smelting furnace 18, melting is handled through preparing burden, stir, skimming, change further degasification in the holding furnace 1 again over to, remove the gred, leave standstill refining treatment, the holding furnace 1 casting position automatic casting that fascinates makes 3104 aluminium alloy flat blooms; Its process conditions are:
A, casting temperature are 725～710 ℃;
B, casting speed are: during casting length 0mm, casting speed is 38mm/min; During casting length 50mm, casting speed 38mm/min; During casting length 317mm, the casting speed linear growth finishes until casting to 60mm/min;
C, cooling water flow: during casting length 0mm, cooling water flow 680m
3/ hr, during casting length 55mm, cooling water flow 680m
3/ hr, during casting length 236mm, the cooling water flow linear growth is to 2604m
3/ hr finishes until casting;
D, crystallizer melt level height: during casting length 0mm, liquid level is 50.0mm, and during casting length 125mm, liquid level is 75.0mm, and during casting length 187mm, liquid level is 82.0mm, and during casting length 467mm, liquid level is 42.0mm.
Described casting chute 17 online removes the chute baffle plate 14,15 that is respectively arranged with the control liquid level behind air rotor rear end and the online slagging-off Rose Box 4.
Described chute temperature is measured by chute laser monitoring device 2.
Described casting speed adjustment realizes by the noticeable degree hydraulic fluid flow rate on the hydraulic pressure vavle shelf; The discharge adjustment is by the control of the flow proportion valve on the water valve frame, and flow proportion valve is realized by PLC control.
Melt temperature is realized by the control cooling water flow in the described crystallizer 6.
Embodiment 1.
The aluminium alloy flat bloom casting method comprises
(1), the electrolysis primary aluminum is sucked smelting furnace 18 batchings with siphoning installation from electrolytic cell, the fusing of heating, stir, the melting step of slagging-off, described stirring is after the electromagnetic agitation machine stirs molten aluminum liquid in the smelting furnace, left standstill 20～30 minutes, and made the bits in the burner hearth aluminium liquid move to aluminium liquid surface, carry out the smelting furnace slagging-off with the compound truck that adds then.
(2), melted qualified aluminium alloy solution being imported holding furnace 1 further removes the gred, insulation 1 refinement step of degasification refining, described holding furnace 1 bottom blowing gas refining, be meant 13 blocks of air bricks are set at the bottom of holding furnace, enter burner hearth aluminium liquid by 13 pipelines to air brick feeding inert gas and carry out degasification, left standstill after the degasification 20 minutes, and the waste residue in the burner hearth aluminium liquid was clawed with forklift for slag.
(3), casting step;
Described casting process condition is:
A, casting temperature are 725～710 ℃; Setting the beginning casting temperature is 700 ℃, carries out the casting temperature adjustment and regulates, and regulates 10～20 ℃ according to casting flaw by each, determines that finally casting temperature is 725～710 ℃; The chute casting temperature detects by chute laser monitoring device 2;
B, casting speed are: during casting length 0mm, casting speed is 38mm/min; During casting length 50mm, casting speed 38mm/min; During casting length 317mm, the casting speed linear growth finishes until casting to 60mm/min; According to presetting casting speed, carry out casting speed and regulate, to regulate by 1mm/min/ according to casting flaw at every turn, when determining that finally the casting speed curve is casting length 0mm, casting speed is 38mm/min; During casting length 50mm, casting speed 38mm/min; During casting length 317mm, the casting speed linear growth finishes until casting to 60mm/min;
C, cooling water flow: during casting length 0mm, cooling water flow 680m
3/ hr, during casting length 55mm, cooling water flow 680m
3/ hr, during casting length 236mm, the cooling water flow linear growth is to 2604m
3/ hr finishes until casting; According to presetting cooling water flow, carry out the cooling water flow adjustment, press adjustable range 10～200m according to casting flaw
3/ hr/ is each, when determining that finally cooling water flow is casting length 0mm, and cooling water flow 680m
3/ hr, during casting length 55mm, cooling water flow 680m
3/ hr, during casting length 236mm, the cooling water flow linear growth is to 2604m
3/ hr finishes until casting;
D, crystallizer melt level height: during casting length 0mm, liquid level is 50.0mm, and during casting length 125mm, liquid level is 75.0mm, and during casting length 187mm, liquid level is 82.0mm, and during casting length 467mm, liquid level is 42.0mm.According to presetting liquid level, carry out the liquid level adjustment, regulate by adjustable range 1～2mm/ at every turn, finally determine liquid level: during casting length 0mm according to casting flaw, liquid level is 50.0mm, during casting length 125mm, liquid level is 75.0mm, during casting length 187mm, liquid level is 82.0mm, during casting length 467mm, liquid level is 42.0mm, and liquid level is by 14,15 controls of chute baffle plate.
Claims (5)
1. aluminium alloy flat bloom casting method, comprise smelting furnace (18), holding furnace (1), casting chute (17), distribute chute (5), it is characterized in that: described low temperature casting technique step leaves standstill processing for lowering the temperature before pouring into the electrolysis primary aluminum in the smelting furnace (18) from potroom with two-maing ladle, change over to again in the smelting furnace (18), melting is handled through preparing burden, stir, skimming, change further degasification in the holding furnace (1) again over to, remove the gred, leave standstill refining treatment, holding furnace (1) the casting position automatic casting that fascinates makes 3104 aluminium alloy flat blooms; Its process conditions are:
A, casting temperature are 725～710 ℃;
B, casting speed are: during casting length 0mm, casting speed is 38mm/min; During casting length 50mm, casting speed 38mm/min; During casting length 317mm, the casting speed linear growth finishes until casting to 60mm/min;
C, cooling water flow: during casting length 0mm, cooling water flow 680m
3/ hr, during casting length 55mm, cooling water flow 680m
3/ hr, during casting length 236mm, the cooling water flow linear growth is to 2604m
3/ hr finishes until casting;
D, crystallizer melt level height: during casting length 0mm, liquid level is 50.0mm, during casting length 125mm, the liquid level linear growth is to 75.0mm, during casting length 187mm, the liquid level linear growth is to 82.0mm, and during casting length 467mm, liquid level is that linearity is reduced to 42.0mm.
2. 3104 aluminium alloy flat bloom casting methods according to claim 1 is characterized in that: described casting chute (17) online removes the chute baffle plate (14,15) that air rotor rear end and online slagging-off Rose Box (4) rear end are respectively arranged with the control liquid level.
3. 3104 aluminium alloy flat bloom casting methods according to claim 1 is characterized in that: described chute temperature is measured by chute laser monitoring device (2).
4. 3104 aluminium alloy flat bloom casting methods according to claim 1 is characterized in that: described casting speed adjustment realizes by the noticeable degree hydraulic fluid flow rate on the hydraulic pressure vavle shelf; The discharge adjustment is by the control of the flow proportion valve on the water valve frame, and flow proportion valve is realized by PLC control.
5. 3104 aluminium alloy flat bloom casting methods according to claim 1 is characterized in that: the interior melt temperature of described crystallizer (6) is realized by the control cooling water flow.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006101650680A CN100393451C (en) | 2006-12-13 | 2006-12-13 | Casting process of 3140 flat aluminium alloy ingot |
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| CNB2006101650680A CN100393451C (en) | 2006-12-13 | 2006-12-13 | Casting process of 3140 flat aluminium alloy ingot |
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| CN100393451C true CN100393451C (en) | 2008-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101708546B (en) * | 2009-11-27 | 2011-09-07 | 山东南山铝业股份有限公司 | Casting process of aluminum alloy slab ingot |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102814471A (en) * | 2011-06-07 | 2012-12-12 | 贵州华科铝材料工程技术研究有限公司 | Process and equipment for casting large-size aluminum ingots |
| CN102366824B (en) * | 2011-07-14 | 2014-03-12 | 中国铝业股份有限公司 | Method for producing smaller-flakiness-ratio aluminum alloy slab ingot with adjustable crystallizer |
| CN108160959B (en) * | 2017-12-28 | 2019-10-18 | 西南铝业（集团）有限责任公司 | A kind of casting method of 5182 aluminium alloy flat bloom |
| CN108160966B (en) * | 2017-12-29 | 2019-10-18 | 西南铝业（集团）有限责任公司 | A kind of aluminum alloy semi-continuous casting method that Zn content is 9%~13% |
| CN111349801B (en) * | 2018-12-24 | 2021-09-24 | 西南铝业（集团）有限责任公司 | Preparation method of aluminum alloy ingot |
| CN111168021B (en) * | 2019-12-11 | 2022-01-25 | 山东创新金属科技有限公司 | Casting process of aluminum alloy round ingot for forging hub |
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- 2006-12-13 CN CNB2006101650680A patent/CN100393451C/en active Active
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|---|---|---|---|---|
| US20050000604A1 (en) * | 2001-09-04 | 2005-01-06 | Hiroshi Kawahara | Aluminum alloy, cast article of aluminum alloy, and method for producing cast article of aluminum alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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