CN101191172A - Producing method for preventing aluminum-manganese-iron alloy pulverizing - Google Patents
Producing method for preventing aluminum-manganese-iron alloy pulverizing Download PDFInfo
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- CN101191172A CN101191172A CNA2006101607214A CN200610160721A CN101191172A CN 101191172 A CN101191172 A CN 101191172A CN A2006101607214 A CNA2006101607214 A CN A2006101607214A CN 200610160721 A CN200610160721 A CN 200610160721A CN 101191172 A CN101191172 A CN 101191172A
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- manganese
- impurity element
- iron
- pulverization
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Abstract
The invention relates to an anti-pulverization manufacture method for aluminum manganese iron alloy, referring to maximally controlling the income amount of pulverization-inducing impurity element Carbon from the raw materials into the compound alloy under high temperature and humid conditions during the manufacture process, quickly cooling cast products during alloy casting process and thereby reducing the amount of the pulverization-inducing compounds combined by impurity element and element Al in the compound alloy, and furthermore preventing pulverization phenomenon of the compound alloy. The compound alloy products manufactured by adopting the method, can guarantee no pulverizations in high temperature, humid and harsh environments.
Description
Technical field:
The present invention relates to the iron alloy production field, be particularly useful for the production of aluminum-manganese-iron alloy.
Background technology:
As everyone knows, the deoxidation of the production of steel alloy and other steel grade smelting process must use the composite alloy of different sorts and performance just can finish, and aluminum-manganese-iron alloy is exactly one of this composite alloy.In the production practice process, it is found that: when aluminum-manganese-iron alloy in control not when causing the content of atomizing impurity element, powder phenomenon-tion takes place in product extremely easily under the envrionment conditions of high temperature, humidity, thereby cause it to lose practicality and can't use, cause enormous economic loss for composite alloy manufacturing enterprise, also influenced carrying out smoothly that iron and steel enterprise produces simultaneously.
Summary of the invention:
Purpose of the present invention is exactly the deficiency that exists in the existing production technology in order to overcome, a kind of production method that prevents aluminum-manganese-iron alloy pulverizing is provided, to avoid composite alloy manufacturing enterprise, satisfy the requirement of STEELMAKING PRODUCTION technology owing to the financial loss that the product efflorescence causes.
The objective of the invention is to realize in the following manner:
A kind of production method that prevents aluminum-manganese-iron alloy pulverizing of the present invention, the chemical ingredients of aluminium ferromanganese are (weight percent) Al20-50%, Mn10-40%, and C≤2.0%, Si≤2.0%, P≤0.3%, S≤0.2%, surplus is an iron; Method comprises: (1) proportioning is in accordance with regulations carried out the preparation of raw material; (2) raw material for preparing is added in the induction furnace by order of addition(of ingredients) smelt; (3) in the alloy casting process, the product surface of having poured into a mould is cooled off fast, it is characterized in that: in the blending process before smelting, under the qualified prerequisite of principal element content in guaranteeing alloy, that controls impurity element C in the desired raw material to greatest extent goes into the stove amount, thus content＜0.3% of the impurity element C in the control alloy product; In the alloy casting process, the product surface of having poured into a mould in the ingot mould is carried out the operation of atomized water spray, and the speed of cooling that guarantees alloy reach 100 ℃/more than the S.
Content＜0.3%th of impurity element C in the blending process before smelting in the control alloy product substitutes high carbon ferromanganese or mid-carbon fe-mn with manganese metal.
Why powder phenomenon-tion can take place in aluminum-manganese-iron alloy, and its principle is had different versions.The present inventor finds that in research practice the efflorescence of aluminum-manganese-iron alloy is relevant with the content of its contained impurity element C.When the content of the impurity element C in the alloy surpassed certain proportion, in the alloy process of cooling, the C element can be in conjunction with generating compd A l with the Al element
4C
3Alloy in depositing process, when running into high temperature, moist envrionment conditions, the Al in the alloy
4C
3Will with airborne H
2Following chemical reaction takes place in O:
Al
4C
3+12H
2O＝4Al(OH)
3+3CH
4↑
Generated Al (OH)
3And CH
4Gas.Along with the prolongation of shelf-time, above-mentioned reaction will be carried out constantly, the Al in alloy
4C
3Till total overall reaction is intact.This process has just caused the progressively fracture of alloy and has finally powdered promptly said powder phenomenon-tion.
The chemical ingredients of anti-efflorescence aluminium ferromanganese product of the present invention should satisfy molten steel when handling to the requirement of product composition.
The aluminium ferromanganese product that adopts method of the present invention to produce has guaranteed that it powder phenomenon-tion can not take place yet under the envrionment conditions of high temperature, humidity.Avoid the financial loss of composite alloy manufacturing enterprise, satisfied the requirement of STEELMAKING PRODUCTION technology.
Embodiment:
The chemical ingredients of anti-efflorescence aluminium ferromanganese product of the present invention comprises aluminium, manganese, iron and impurity, and impurity comprises carbon, silicon, phosphorus, sulphur etc.It is (%) that a kind of typical weight percent of the present invention is formed:
| Al | Mn | C | Si | P | S | Fe |
| 30-32 | 10-15 | ≤0.3 | ≤2.0 | ≤0.3 | ≤0.05 | Surplus |
Processing condition of the present invention adopt 2 tons of medium-frequency induction furnaces, and power is 900kw, and standard capacity is 2000kg, and crucible adopts the magnesia knotting, and mold adopts heat resisting iron to touch.
(1) batching: every stove is measured by norm and is 850kg, and proportioning raw materials is:
Steel scrap: 465kg (rate of recovery of Fe is 98%);
Aluminium ingot: 303kg (rate of recovery of Al is 90%);
Manganese metal: 95kg (rate of recovery of Mn is 99%).
(2) melting:
The first step: drop into steel scrap.The 465kg steel scrap is dropped in the medium-frequency induction furnace, heat, be warming up to steel scrap and all melt.
Second step: add manganese metal.Carrying out melting in the molten steel in the 95kg manganese metal input medium-frequency induction furnace.
The 3rd step: drop into aluminium ingot.In the molten steel in the 303kg aluminium ingot input medium-frequency induction furnace.
The 4th step: stir.Under electromagnetism and artificial fully stir, make the abundant mixing of alloying constituent, and drag for removing dross.
The 5th step: cast.The tipping body of heater pours into the alloy solution in the medium-frequency induction furnace in the ingot mould.After alloy solution begins to cool down in ingot mould immediately to the alloy surface operation of spraying water, to accelerate the speed of cooling of alloy.
Facts have proved that the aluminium ferromanganese product that adopts production method of the present invention to produce is placed on and can guarantees in the physical environment powder phenomenon-tion can not take place for a long time.
Claims (2)
1. production method that prevents aluminum-manganese-iron alloy pulverizing, the chemical ingredients of aluminium ferromanganese is (weight percent) Al20-50%, Mn10-40%, C≤2.0%, Si≤2.0%, P≤0.3%, S≤0.2%, surplus is an iron; Method comprises: (1) proportioning is in accordance with regulations carried out the preparation of raw material; (2) raw material for preparing is added in the induction furnace by order of addition(of ingredients) smelt; (3) in the alloy casting process, the product surface of having poured into a mould is cooled off fast, it is characterized in that: in the blending process before smelting, under the qualified prerequisite of principal element content in guaranteeing alloy, that controls impurity element C in the desired raw material to greatest extent goes into the stove amount, thus content＜0.3% of the impurity element C in the control alloy product; In the alloy casting process, the product surface of having poured into a mould in the ingot mould is carried out the operation of atomized water spray, and the speed of cooling that guarantees alloy reach 100 ℃/more than the S.
2. a kind of production method that prevents aluminum-manganese-iron alloy pulverizing as claimed in claim 1 is characterized in that: content＜0.3%th of the impurity element C in the blending process before smelting in the control alloy product substitutes high carbon ferromanganese or mid-carbon fe-mn with manganese metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101607214A CN101191172A (en) | 2006-11-30 | 2006-11-30 | Producing method for preventing aluminum-manganese-iron alloy pulverizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101607214A CN101191172A (en) | 2006-11-30 | 2006-11-30 | Producing method for preventing aluminum-manganese-iron alloy pulverizing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101191172A true CN101191172A (en) | 2008-06-04 |
Family
ID=39486373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101607214A Pending CN101191172A (en) | 2006-11-30 | 2006-11-30 | Producing method for preventing aluminum-manganese-iron alloy pulverizing |
Country Status (1)
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| CN (1) | CN101191172A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031471A (en) * | 2012-12-19 | 2013-04-10 | 济南济钢铁合金厂 | Method for preventing aluminum manganese ferrum composite deoxidized alloy from being pulverized and adhered to furnace |
| CN110468316A (en) * | 2019-09-11 | 2019-11-19 | 中南大学 | A kind of anti-powdering aluminium-silicon-manganese-iron alloy and preparation method thereof |
| CN113547124A (en) * | 2021-07-14 | 2021-10-26 | 鞍钢股份有限公司 | Production method for preventing aluminum-manganese-iron alloy from being pulverized |
-
2006
- 2006-11-30 CN CNA2006101607214A patent/CN101191172A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031471A (en) * | 2012-12-19 | 2013-04-10 | 济南济钢铁合金厂 | Method for preventing aluminum manganese ferrum composite deoxidized alloy from being pulverized and adhered to furnace |
| CN103031471B (en) * | 2012-12-19 | 2014-09-03 | 济南济钢铁合金厂 | Method for preventing aluminum manganese ferrum composite deoxidized alloy from being pulverized and adhered to furnace |
| CN110468316A (en) * | 2019-09-11 | 2019-11-19 | 中南大学 | A kind of anti-powdering aluminium-silicon-manganese-iron alloy and preparation method thereof |
| CN113547124A (en) * | 2021-07-14 | 2021-10-26 | 鞍钢股份有限公司 | Production method for preventing aluminum-manganese-iron alloy from being pulverized |
| CN113547124B (en) * | 2021-07-14 | 2023-01-17 | 鞍钢股份有限公司 | Production method for preventing aluminum-manganese-iron alloy from being pulverized |
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Open date: 20080604 |