CN104313437A - Manufacturing process of ZK61M magnesium alloy slab ingot - Google Patents
Manufacturing process of ZK61M magnesium alloy slab ingot Download PDFInfo
- Publication number
- CN104313437A CN104313437A CN201410506830.1A CN201410506830A CN104313437A CN 104313437 A CN104313437 A CN 104313437A CN 201410506830 A CN201410506830 A CN 201410506830A CN 104313437 A CN104313437 A CN 104313437A
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- CN
- China
- Prior art keywords
- magnesium alloy
- magnesium
- zk61m
- slab ingot
- crystallizer
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
- B22D21/02—Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere
- B22D21/04—Casting aluminium or magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
Abstract
The invention relates to a manufacturing process of a ZK61M magnesium alloy slab ingot in the field of manufacturing of magnesium alloys. According to the process, links of crack, segregation and impurity addition during ingot casting in the production process are normalized in design, so that the yield of the ZK61M magnesium alloy slab ingot is effectively improved.
Description
[technical field]
The present invention relates to magnesium alloy and manufacture field, especially relate to a kind of manufacturing process for the production of ZK61M magnesium alloy slab ingot.
[background technology]
Known, because ZK61M magnesium alloy not only has good corrosion-resistant, room temperature mechanics and higher tension and compression yield strength, but also there is high-temperature instantaneous intensity and good shaping and welding property, and use temperature≤150 DEG C, therefore, it is generally used for making aircraft skin, hatch door, wallboard, long purlin, the rocking arm of operating system, bearing, guided missile covering and aerospace structural part etc.;
But, the conventional fabrication processes of current production magnesium alloy slab ingot is all the form of training an apprentice with master worker, bring out one by one, because traditional manufacturing process relies on the experience of operator individual accumulation to control completely, therefore, traditional technology always could find product produced problem after end, as crackle during ingot casting, segregation and add assorted phenomenon etc., and the also just summing up experience after discovery of traditional way, avoid make mistakes again next time, namely existing conventional fabrication processes has no idea to solve to the magnesium alloy slab ingot institute produced problem in production, if and the magnesium alloy slab ingot gone wrong is melted down, then melt down loss too large, certain financial loss can be caused to producer.
[summary of the invention]
In order to overcome the deficiency in background technology, the invention discloses a kind of ZK61M magnesium alloy slab ingot manufacturing process, described technique effectively can improve the yield rate of ZK61M magnesium alloy slab ingot.
For achieving the above object, the present invention adopts following technical scheme:
A kind of ZK61M magnesium alloy slab ingot manufacturing process, described processing step is as follows:
One, in the fusion crucible being heated to 150 DEG C, 8-10 kilogram of barium fluxing agent is added, Mg-Zr master alloy, high-purity magnesium ingot, high-purity zinc ingot metal is added Deng after barium fluxing agent fusing, then stir after temperature is raised to 710 ± 5 DEG C, and leave standstill 15min after stirring;
Two, the liquid magnesium alloy sample getting fusing in fusion crucible carries out composition analysis, require that the massfraction/% of each composition of liquid magnesium alloy sample meets: aluminium≤0.03, zinc 5.5-6.0, manganese≤0.007, zirconium 0.6-0.9, silicon≤0.008, iron≤0.03, copper≤0.008, nickel≤0.005, beryllium≤0.008, surplus are magnesium;
Three, imported analyzing qualified magnesium alloy liquation in cast crucible by conduit, and keep its temperature to be 710 ± 5 DEG C, now, in magnesium alloy liquation, add rare earth, and then add 10-12 kilogram of No. five flux and carry out refining; From cast crucible, get liquid magnesium alloy sample after refining 15min and carry out secondary analysis, require that the massfraction/% of each composition of liquid magnesium alloy sample meets: aluminium≤0.03, zinc 5.5-6.0, manganese≤0.007, zirconium 0.6-0.9, silicon≤0.008, iron≤0.03, copper≤0.008, nickel≤0.005, beryllium≤0.008, surplus are magnesium;
Four, magnesium alloy liquation qualified for secondary analysis is left standstill 120min, then by casting thrust-augmenting nozzle, magnesium alloy liquation is imported crystallizer, and the base be provided with below crystallizer for catching magnesium alloy liquation, magnesium alloy liquation slowly can form solid after being subject to the water quench outside crystallizer, at this moment, base declines with the speed of per minute 33-35mm, constantly crystallizer is flowed into the flow of per minute 8.5-9Kg by the magnesium alloy liquation of nitrogen protection liquid level, and until be frozen into ZK61M magnesium alloy slab ingot;
Further, the composition quality mark/% of described barium fluxing agent is as follows: magnesium chloride 38-46, Repone K 32-40, bariumchloride 5-8, Calcium Fluoride (Fluorspan) 3-5, sodium-chlor+Calcium Chloride Powder Anhydrous < 8, magnesium oxide < 1.5, water < 3, not fusant < 1.5.
Further, the composition quality mark/% of No. five described flux is as follows: magnesium chloride 25-34, Repone K 25-29, bariumchloride 12-15, Calcium Fluoride (Fluorspan) 15-20, magnesium fluoride 15-20, magnesium oxide≤2, water≤2, not fusant≤1.5.
Further, the zirconium composition quality mark/% in described technique is 0.7-0.8; Can adopt during founding magnesium alloy slab ingot is highly 210mm, and leptoprosopy is of a size of 180mm, and wide face is of a size of the short crystallizer of 1200mm; Casting cooling water amount is the gradient of per minute 120 kg casting thrust-augmenting nozzle is 65-75 degree.
Further, the zinc composition quality mark/% in described technique is 5.8-5.9; Crystallizer leptoprosopy is R60 degree; The cooling water flow of per minute is no more than 150 kilograms; Magnesium alloy liquation liquid level in crystallizer is not less than 45mm, and casting speed is no more than per minute 40mm.
Further, when importing magnesium alloy liquation in crystallizer, when magnesium alloy liquation height is 10mm, one piece of Magnesium alloy strip can be placed at its liquid level.
Further, described technique is made ZK61M magnesium alloy slab ingot and is taken effect and just can reprocess after 1 year.
Owing to adopting technical scheme as above, the present invention has following beneficial effect:
By easily crackle, segregation is there is and adds assorted link having carried out Standardized Design in ZK61M magnesium alloy slab ingot manufacturing process of the present invention when ingot casting by production process, thus not only effectively ensured the whole efficiency of technique, improve the yield rate of ZK61M magnesium alloy slab ingot, but also reduce the cost of ZK61M magnesium alloy accordingly because of the raising of yield rate.
[embodiment]
Can explain the present invention in more detail by the following examples, disclose object of the present invention and be intended to protect all changes and improvements in the scope of the invention, the present invention is not limited to the following examples:
The production stage of ZK61M magnesium alloy slab ingot manufacturing process of the present invention is as follows:
One, in the fusion crucible being heated to 150 DEG C, 8-10 kilogram of barium fluxing agent is added, Mg-Zr master alloy, high-purity magnesium ingot, high-purity zinc ingot metal is added Deng after barium fluxing agent fusing, then stir after temperature is raised to 710 ± 5 DEG C, and leave standstill 15min after stirring; Composition quality mark/the % of described barium fluxing agent is as follows: magnesium chloride 38-46, Repone K 32-40, bariumchloride 5-8, Calcium Fluoride (Fluorspan) 3-5, sodium-chlor+Calcium Chloride Powder Anhydrous < 8, magnesium oxide < 1.5, water < 3, not fusant < 1.5, due to a skim can be formed on liquid magnesium alloy surface after barium fluxing agent fusing, and this tunic can make liquid magnesium alloy and air separate, namely utilize the barium fluxing agent added to play the effect of fire extinguishing, thus guarantee safe production;
Two, the liquid magnesium alloy sample getting fusing in fusion crucible carries out composition analysis, require that the massfraction/% of each composition of liquid magnesium alloy sample meets: aluminium≤0.03, zinc 5.5-6.0, manganese≤0.007, zirconium 0.6-0.9, silicon≤0.008, iron≤0.03, copper≤0.008, nickel≤0.005, beryllium≤0.008, surplus are magnesium;
Three, imported analyzing qualified magnesium alloy liquation in cast crucible by conduit, and keep its temperature to be 710 ± 5 DEG C, now, in magnesium alloy liquation, add rare earth, and then add 10-12 kilogram of No. five flux and carry out refining; Composition quality mark/the % of No. five described flux is as follows: magnesium chloride 25-34, Repone K 25-29, bariumchloride 12-15, Calcium Fluoride (Fluorspan) 15-20, magnesium fluoride 15-20, magnesium oxide≤2, water≤2, not fusant≤1.5, and adding No. five flux-refinings is to make the impurity in liquid magnesium alloy fully precipitate; From cast crucible, get liquid magnesium alloy sample after refining 15min and carry out secondary analysis, require that the massfraction/% of each composition of liquid magnesium alloy sample meets: aluminium≤0.03, zinc 5.5-6.0, manganese≤0.007, zirconium 0.6-0.9, silicon≤0.008, iron≤0.03, copper≤0.008, nickel≤0.005, beryllium≤0.008, surplus are magnesium;
Four, magnesium alloy liquation qualified for secondary analysis is left standstill 120min, then be that the casting thrust-augmenting nozzle of 65-75 degree is by magnesium alloy liquation importing crystallizer by gradient, and the base be provided with below crystallizer for catching magnesium alloy liquation, magnesium alloy liquation slowly can form solid after being subject to the water quench outside crystallizer, at this moment, base declines with the speed of per minute 33-35mm, constantly crystallizer is flowed into the flow of per minute 8.5-9Kg by the magnesium alloy liquation of nitrogen protection liquid level, and until be frozen into ZK61M magnesium alloy slab ingot; As required, the ZK61M magnesium alloy slab ingot that described manufacture technics goes out needs timeliness 1 year, namely could be used for reprocessing to manufacture related products after spring, summer, autumn, the four seasons in winter; In addition, when importing magnesium alloy liquation in crystallizer, when magnesium alloy liquation height is 10mm, one piece of Magnesium alloy strip can be placed at its liquid level, thus reach with this probability reducing magnesium alloy slab ingot and occur crackle;
In order to improve the intensity of ZK61M magnesium alloy slab ingot, the composition quality mark/% of the zirconium in described liquid magnesium alloy sample is 0.7-0.8, to make crystallization nucleus increasing number, crystal grain is controlled the yardstick in 1mm; And employing is highly 210mm when founding magnesium alloy slab ingot, leptoprosopy is of a size of 180mm, and wide face is of a size of the short crystallizer of 1200mm; Casting cooling water amount is set to per minute 120 kg, magnesium alloy liquation is solidified instantaneously in crystallizer, thus do not give the time of grain growth;
In order to reduce the crackle that ZK61M magnesium alloy slab ingot occurs, improve yield rate accordingly, the composition quality mark/% of the zinc in described liquid magnesium alloy sample is 5.8-5.9; Crystallizer leptoprosopy is R60 degree; The cooling water flow of per minute is no more than 150 kilograms; Magnesium alloy liquation liquid level in crystallizer is not less than 45mm, and casting speed is no more than per minute 40mm.
Part not in the detailed description of the invention is prior art, therefore the present invention is not described in detail.
Claims (7)
1. a ZK61M magnesium alloy slab ingot manufacturing process, is characterized in that: described processing step is as follows:
One, in the fusion crucible being heated to 150 DEG C, 8-10 kilogram of barium fluxing agent is added, Mg-Zr master alloy, high-purity magnesium ingot, high-purity zinc ingot metal is added Deng after barium fluxing agent fusing, then stir after temperature is raised to 710 ± 5 DEG C, and leave standstill 15min after stirring;
Two, the liquid magnesium alloy sample getting fusing in fusion crucible carries out composition analysis, require that the massfraction/% of each composition of liquid magnesium alloy sample meets: aluminium≤0.03, zinc 5.5-6.0, manganese≤0.007, zirconium 0.6-0.9, silicon≤0.008, iron≤0.03, copper≤0.008, nickel≤0.005, beryllium≤0.008, surplus are magnesium;
Three, imported analyzing qualified magnesium alloy liquation in cast crucible by conduit, and keep its temperature to be 710 ± 5 DEG C, now, in magnesium alloy liquation, add rare earth, and then add 10-12 kilogram of No. five flux and carry out refining; From cast crucible, get liquid magnesium alloy sample after refining 15min and carry out secondary analysis, require that the massfraction/% of each composition of liquid magnesium alloy sample meets: aluminium≤0.03, zinc 5.5-6.0, manganese≤0.007, zirconium 0.6-0.9, silicon≤0.008, iron≤0.03, copper≤0.008, nickel≤0.005, beryllium≤0.008, surplus are magnesium;
Four, magnesium alloy liquation qualified for secondary analysis is left standstill 120min; then by casting thrust-augmenting nozzle, magnesium alloy liquation is imported crystallizer; and the base be provided with below crystallizer for catching magnesium alloy liquation; magnesium alloy liquation slowly can form solid after being subject to the water quench outside crystallizer; at this moment; base declines with the speed of per minute 33-35mm; constantly flow into crystallizer by the magnesium alloy liquation of nitrogen protection liquid level with the flow of per minute 8.5-9Kg, and until be frozen into ZK61M magnesium alloy slab ingot.
2. ZK61M magnesium alloy slab ingot manufacturing process according to claim 1, is characterized in that: the composition quality mark/% of described barium fluxing agent is as follows: magnesium chloride 38-46, Repone K 32-40, bariumchloride 5-8, Calcium Fluoride (Fluorspan) 3-5, sodium-chlor+Calcium Chloride Powder Anhydrous < 8, magnesium oxide < 1.5, water < 3, not fusant < 1.5.
3. ZK61M magnesium alloy slab ingot manufacturing process according to claim 1, is characterized in that: the composition quality mark/% of No. five described flux is as follows: magnesium chloride 25-34, Repone K 25-29, bariumchloride 12-15, Calcium Fluoride (Fluorspan) 15-20, magnesium fluoride 15-20, magnesium oxide≤2, water≤2, not fusant≤1.5.
4. ZK61M magnesium alloy slab ingot manufacturing process according to claim 1, is characterized in that: the composition quality mark/% of the zirconium in described liquid magnesium alloy sample is 0.7-0.8; Can adopt during founding magnesium alloy slab ingot is highly 210mm, and leptoprosopy is of a size of 180mm, and wide face is of a size of the short crystallizer of 1200mm; Casting cooling water amount is the gradient of per minute 120 kg casting thrust-augmenting nozzle is 65-75 degree.
5. ZK61M magnesium alloy slab ingot manufacturing process according to claim 1, is characterized in that: the zinc composition quality mark/% in described liquid magnesium alloy sample is 5.8-5.9; Crystallizer leptoprosopy is R60 degree; The cooling water flow of per minute is no more than 150 kilograms; Magnesium alloy liquation liquid level in crystallizer is not less than 45mm, and casting speed is no more than per minute 40mm.
6. ZK61M magnesium alloy slab ingot manufacturing process according to claim 1, is characterized in that: when importing magnesium alloy liquation in crystallizer, when magnesium alloy liquation height is 10mm, can place one piece of Magnesium alloy strip at its liquid level.
7. ZK61M magnesium alloy slab ingot manufacturing process according to claim 1, is characterized in that: the ZK61M magnesium alloy slab ingot that described technique is made takes effect and just can reprocess after 1 year.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105483483A (en) * | 2015-12-04 | 2016-04-13 | 天津东义镁制品股份有限公司 | Deforming rare earth magnesium alloy and preparing method thereof |
| RU2601718C1 (en) * | 2015-04-27 | 2016-11-10 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ФГУП "ВИАМ") | Method of magnesium-zirconium alloys melting and casting |
| CN107365929A (en) * | 2017-09-01 | 2017-11-21 | 洛阳晟雅镁合金科技有限公司 | The preparation technology of LZ91 magnesium lithium alloys ingot casting under a kind of non-vacuum |
| CN108165784A (en) * | 2017-12-26 | 2018-06-15 | 洛阳晟雅镁合金科技有限公司 | A kind of ZK61M magnesium alloy rod preparation processes of a diameter of 720mm |
| CN108311652A (en) * | 2018-02-06 | 2018-07-24 | 洛阳晟雅镁合金科技有限公司 | A kind of preparation process of ME20M magnesium alloys slab ingot |
| CN108339953A (en) * | 2018-02-09 | 2018-07-31 | 陕西斯瑞新材料股份有限公司 | It is a kind of it is antivacuum under draw the production technology of continuous casting chromium-zirconium-copper slab ingot |
| CN112877556A (en) * | 2021-01-12 | 2021-06-01 | 南通鑫祥锌业有限公司 | Zinc alloy flat belt with radian and processing technology thereof |
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2014
- 2014-09-28 CN CN201410506830.1A patent/CN104313437A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2601718C1 (en) * | 2015-04-27 | 2016-11-10 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ФГУП "ВИАМ") | Method of magnesium-zirconium alloys melting and casting |
| CN105483483A (en) * | 2015-12-04 | 2016-04-13 | 天津东义镁制品股份有限公司 | Deforming rare earth magnesium alloy and preparing method thereof |
| CN107365929A (en) * | 2017-09-01 | 2017-11-21 | 洛阳晟雅镁合金科技有限公司 | The preparation technology of LZ91 magnesium lithium alloys ingot casting under a kind of non-vacuum |
| CN108165784A (en) * | 2017-12-26 | 2018-06-15 | 洛阳晟雅镁合金科技有限公司 | A kind of ZK61M magnesium alloy rod preparation processes of a diameter of 720mm |
| CN108165784B (en) * | 2017-12-26 | 2019-11-26 | 洛阳晟雅镁合金科技有限公司 | The ZK61M magnesium alloy rod preparation process that a kind of diameter is 720mm |
| CN108311652A (en) * | 2018-02-06 | 2018-07-24 | 洛阳晟雅镁合金科技有限公司 | A kind of preparation process of ME20M magnesium alloys slab ingot |
| CN108311652B (en) * | 2018-02-06 | 2019-12-17 | 洛阳晟雅镁合金科技有限公司 | Preparation process of ME20M magnesium alloy slab ingot |
| CN108339953A (en) * | 2018-02-09 | 2018-07-31 | 陕西斯瑞新材料股份有限公司 | It is a kind of it is antivacuum under draw the production technology of continuous casting chromium-zirconium-copper slab ingot |
| CN112877556A (en) * | 2021-01-12 | 2021-06-01 | 南通鑫祥锌业有限公司 | Zinc alloy flat belt with radian and processing technology thereof |
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