CN101514417A - Aluminum chromium intermediate alloy and preparation method thereof - Google Patents
Aluminum chromium intermediate alloy and preparation method thereof Download PDFInfo
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- CN101514417A CN101514417A CNA200910028727XA CN200910028727A CN101514417A CN 101514417 A CN101514417 A CN 101514417A CN A200910028727X A CNA200910028727X A CN A200910028727XA CN 200910028727 A CN200910028727 A CN 200910028727A CN 101514417 A CN101514417 A CN 101514417A
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Abstract
The invention discloses an aluminum chromium intermediate alloy and a preparation method thereof. The alloy is made of main ingredients and minor ingredients, wherein the main ingredients are primary aluminum liquid and metallic chromium, and the minor ingredients are a refining agent and a covering agent. The characteristic thereof lies in the alloy composition according to weight percentage: 99.98%-99.99% of chromium in the metallic nickel; 0.01%-0.1% of silicon, 0.001%-0.12% of ferric, and 99.97%-99.99% of aluminum in the primary aluminum liquid. The input amount of the alloy and the primary aluminum liquid (counted by 10T furnace) is as follows: 8T-9T of primary aluminum liquid, 0.3T-0.3T of metallic chromium, and proper amount of the refining agent and the covering agent. The advantage thereof is that the aluminum chromium intermediate alloy is produced by the method of using primary aluminum liquid to achieve the aim of energy saving and environment protection, thus remarkably reducing investment cost, shortening production period, simplifying production technique and lowering process cost.
Description
Technical field
The present invention relates to a kind of aluminium chromium hardener, especially a kind of aluminium chromium hardener and preparation method thereof belongs to the technical field of non-ferrous metal.
Background technology
Present China aluminium chromium (AlCr
2) master alloy finished by the fusing remelted aluminum ingot, because complex process, the process for processing cycle is longer, therefore, processing charges is higher relatively.In order to cut down the consumption of energy, reduce investment, shorten the production cycle.We have adopted primary aluminum liquid to aluminium chromium (AlCr
2) master alloy produces trial, obtained effect preferably, a kind of primary aluminum liquid that utilizes is produced qualified aluminium chromium (AlCr
2) master alloy just arisen at the historic moment.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of aluminium chromium hardener and preparation method thereof is provided.This kind aluminium chromium hardener is that the method for utilizing primary aluminum liquid to produce aluminium chromium hardener reaches the purpose of energy-conserving and environment-protective.Thereby greatly reduce cost of investment, shorten the production cycle, simplified production technique, reduced tooling cost.
Technical scheme of the present invention is: a kind of aluminium chromium hardener, to make by major ingredient and auxiliary material, and major ingredient is primary aluminum liquid, chromium metal.Auxiliary material is refining agent, insulating covering agent; It is characterized in that: alloy composition by weight percentage: chromium metal chromium content is 99.98%-99.99%; Primary aluminum liquid silicone content is 0.01%-0.1%, and iron level is 0.001%-0.12%, aluminium content 99.97%-99.99%.
Require chromium content according to GB, calculate the adding quantity (calculating with the 10T furnace gauge) of various material, consider scaling loss and spot segregation, the add-on of various alloys should be by the theory of computation add-on of reaching the standard grade in the GB8735-88 GB.
The input amount of alloy and primary aluminum liquid (calculating) with the 10T furnace gauge: primary aluminum liquid 8T-9T, chromium metal 0.2T-0.3T, refining agent, insulating covering agent are an amount of.
A kind of preparation method of aluminium chromium hardener: adopted the method for direct use primary aluminum liquid to produce, add insulating covering agent earlier in primary aluminum liquid surface, being warming up to 820 ℃-840 ℃ adds refining agent again and carries out refining, skim after the refining, add chromium metal again, with magnetic stirrer auxiliary with manually fully stir make whole fusings after, take a sample when again aluminium liquid being heated to 1580 ℃-1600 ℃ behind the adding insulating covering agent, casting after qualified according to analytical results or carry out feed supplement by GB GB8735-88 requirement in chemical examination back, builds after qualified to get product.
Described primary aluminum liquid is the molten aluminium of temperature more than 800 ℃ of extracting out from electrolyzer.
Described refining agent is the injection refining agent, is carrier with rare gas element (nitrogen or argon gas), and ground flux is evenly sent into melt inside, realizes the purifying treatment to melt.
Described refining time is 5～10 minutes.
Described insulating covering agent claims the heat retaining and exothermal agent again, and effect is effectively to protect aluminium liquid not oxidized, prevents to absorb airborne moisture content and hydrogen, reduces the scaling loss of aluminium, improves the melting quality of aluminium liquid.
Advantage of the present invention is in particular in:
1, the time of minimizing from primary aluminum liquid to remelted aluminum ingot, saves remelted aluminum ingot melting operation again, improved labour productivity;
2, the needed energy consumption of remelted aluminum ingot melting process, material consumption have been reduced;
3, saves energy and water resources;
4, low production cost has much competitive power on price;
5, less investment, instant effect, payback period weak point.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1
1. raw material ratio:
A kind of aluminium chromium hardener is made by major ingredient and auxiliary material, and major ingredient is primary aluminum liquid, chromium metal.Auxiliary material is refining agent, insulating covering agent.
(1), analyze the composition of various materials and the composition of primary aluminum liquid, chromium metal chromium content is 99.98%; Primary aluminum liquid silicone content is 0.1%, and iron level is 0.12%, aluminium content 99.97%.
(2), require chromium content, calculate the adding quantity (calculating with the 10T furnace gauge) of various material, consider scaling loss and spot segregation, the add-on of various alloys should be by the theory of computation add-on of reaching the standard grade in the GB8735-88 GB according to GB.
(3), the input amount (calculating) of alloy and primary aluminum liquid with the 10T furnace gauge: primary aluminum liquid 8T, chromium metal 0.256T, refining agent, insulating covering agent are an amount of.
2. preparation method:
Adopted the method for direct use primary aluminum liquid to produce, add insulating covering agent earlier in primary aluminum liquid surface, being warming up to 820 ℃ adds refining agent again and carries out refining and skim after 8 minutes, add chromium metal again, with magnetic stirrer auxiliary with manually fully stir make whole fusings after, adding when again aluminium liquid being heated to 1580 ℃ behind the insulating covering agent and take a sample, casts after qualified according to analytical results or carries out feed supplement by GB GB8735-88 requirement in the chemical examination back, builds after qualified to get product.
Analytical results is:
| Chemical Composition | Si | Fe | Zn | Cr | Al |
| Content (%) | 0.2 | 0.3 | 0.1 | 2 | Surplus |
From above analytical results, each component content all reaches the requirement of GB8735-88 GB.
Embodiment 2
1. raw material ratio:
A kind of aluminium chromium hardener is made by major ingredient and auxiliary material, and major ingredient is primary aluminum liquid, chromium metal; Auxiliary material is refining agent, insulating covering agent.
(1), analyze the composition of various materials and the composition of primary aluminum liquid, chromium metal chromium content is 99.99%; Primary aluminum liquid silicone content is 0.01%, and iron level is 0.01%, aluminium content 99.99%.
(2), require chromium content, calculate the adding quantity (calculating with the 10T furnace gauge) of various material, consider scaling loss and spot segregation, the add-on of various alloys should be by the theory of computation add-on of reaching the standard grade in the GB8735-88 GB according to GB.
(3), the input amount (calculating) of alloy and primary aluminum liquid with the 10T furnace gauge: primary aluminum liquid 9T, chromium metal 0.3T, refining agent, insulating covering agent are an amount of.
2. preparation method:
Adopted the method for direct use primary aluminum liquid to produce, add insulating covering agent earlier in primary aluminum liquid surface, being warming up to 8350 ℃ adds refining agent again and carries out refining and skim after 10 minutes, add chromium metal again, with magnetic stirrer auxiliary with manually fully stir make whole fusings after, adding when again aluminium liquid being heated to 1600 ℃ behind the insulating covering agent and take a sample, casts after qualified according to analytical results or carries out feed supplement by GB GB8735-88 requirement in the chemical examination back, builds after qualified to get product.
Analytical results is:
| Chemical Composition | Si | Fe | Zn | Cr | Al |
| Content (%) | 0.15 | 0.2 | 0.1 | 2.5 | Surplus |
From above analytical results, each component content all reaches the requirement of GB8735-88 GB.
Claims (3)
1, a kind of aluminium chromium hardener is made by major ingredient and auxiliary material, and major ingredient is primary aluminum liquid, chromium metal; Auxiliary material is refining agent, insulating covering agent; It is characterized in that: alloy composition by weight percentage: chromium metal chromium content is 99.98%-99.99%; Primary aluminum liquid silicone content is 0.01%-0.1%, and iron level is 0.001%-0.12%, aluminium content 99.97%-99.99%.
2, a kind of aluminium chromium hardener according to claim 1 is characterized in that: the input amount of alloy and primary aluminum liquid (calculating with the 10T furnace gauge): primary aluminum liquid 8T-9T, and chromium metal 0.2T-0.3T, refining agent, insulating covering agent are an amount of.
3, preparation method according to the described a kind of aluminium chromium hardener of claim 2, it is characterized in that: adopted the method for direct use primary aluminum liquid to produce, add insulating covering agent earlier in primary aluminum liquid surface, being warming up to 820 ℃-840 ℃ adds refining agent again and carries out skimming after refining 5-10 minute, add chromium metal again, with magnetic stirrer auxiliary with manually fully stir make whole fusings after, take a sample when again aluminium liquid being heated to 1580 ℃-1600 ℃ behind the adding insulating covering agent, casting after qualified according to analytical results or carry out feed supplement by GB GB8735-88 requirement in chemical examination back, builds after qualified to get product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA200910028727XA CN101514417A (en) | 2009-01-09 | 2009-01-09 | Aluminum chromium intermediate alloy and preparation method thereof |
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| CNA200910028727XA CN101514417A (en) | 2009-01-09 | 2009-01-09 | Aluminum chromium intermediate alloy and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775526A (en) * | 2010-03-05 | 2010-07-14 | 武汉泛洲中越合金有限公司 | AL-Cr binary intermediate alloy and preparation method thereof |
| CN102517465A (en) * | 2012-01-19 | 2012-06-27 | 湖南金联星特种材料股份有限公司 | Method for manufacturing aluminum-chromium intermediate alloy by using chromium-aluminum alloy and aluminum |
| CN104046818A (en) * | 2014-07-02 | 2014-09-17 | 正邦（福建）冶金材料有限公司 | Production process of Al-20Cr intermediate alloy |
| CN104805333A (en) * | 2015-04-22 | 2015-07-29 | 铜山县超特有色金属添加剂厂 | Aluminium-chromium intermediate alloy AlCr20 and preparation method thereof |
| CN104962787A (en) * | 2015-06-19 | 2015-10-07 | 新疆众和股份有限公司 | High-purity aluminum-chromium intermediate alloy and preparation method thereof |
-
2009
- 2009-01-09 CN CNA200910028727XA patent/CN101514417A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775526A (en) * | 2010-03-05 | 2010-07-14 | 武汉泛洲中越合金有限公司 | AL-Cr binary intermediate alloy and preparation method thereof |
| CN102517465A (en) * | 2012-01-19 | 2012-06-27 | 湖南金联星特种材料股份有限公司 | Method for manufacturing aluminum-chromium intermediate alloy by using chromium-aluminum alloy and aluminum |
| CN104046818A (en) * | 2014-07-02 | 2014-09-17 | 正邦（福建）冶金材料有限公司 | Production process of Al-20Cr intermediate alloy |
| CN104046818B (en) * | 2014-07-02 | 2016-06-08 | 正邦（福建）冶金材料有限公司 | The production technique of a kind of Al-20Cr master alloy |
| CN104805333A (en) * | 2015-04-22 | 2015-07-29 | 铜山县超特有色金属添加剂厂 | Aluminium-chromium intermediate alloy AlCr20 and preparation method thereof |
| CN104962787A (en) * | 2015-06-19 | 2015-10-07 | 新疆众和股份有限公司 | High-purity aluminum-chromium intermediate alloy and preparation method thereof |
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| C06 | Publication | ||
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Xuzhou Caifa Aluminum Heat Transfer Co., Ltd. Assignor: Bi Xiangyu Contract fulfillment period: 2009.2.26 to 2014.2.25 contract change Contract record no.: 2009320000361 Denomination of invention: Aluminum chromium intermediate alloy and preparation method thereof License type: Exclusive license Record date: 2009.3.13 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.26 TO 2014.2.25; CHANGE OF CONTRACT Name of requester: XUZHOU CAIFA ALUMINOTHERMY TRANSMISSION CO., LTD. Effective date: 20090313 |
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Open date: 20090826 |