CN102352455A - Al-P intermediate alloy and preparation method thereof - Google Patents
Al-P intermediate alloy and preparation method thereof Download PDFInfo
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- CN102352455A CN102352455A CN2011103554778A CN201110355477A CN102352455A CN 102352455 A CN102352455 A CN 102352455A CN 2011103554778 A CN2011103554778 A CN 2011103554778A CN 201110355477 A CN201110355477 A CN 201110355477A CN 102352455 A CN102352455 A CN 102352455A
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Abstract
The invention belongs to the field of metal materials and particularly relates to an Al-P intermediate alloy which is used to refine primary crystal silicon in the Al-Si alloy and Mg2Si in the Mg-Si alloy, and a preparation method thereof. The Al-P intermediate alloy contains two elements, namely Al and P. The Al-P intermediate alloy is characterized in that the alloy comprises the following components by weight percent: 92.5-98.5% of Al, 1.5-7.5% of P and less than 0.8% of impurities. The preparation method of the Al-P intermediate alloy comprises the following steps of: mixing aluminum powder and black phosphorus powder evenly, drying, briquetting with a press machine, placing the obtained blocks in an electric furnace with the inert atmosphere or other heating devices, heating to 600-750 DEG C, keeping the temperature for 45-120 minutes, stopping heating, and cooling along with the furnace to obtain the blocky Al-P intermediate alloy or extruding the sintered blocks into wires. The Al-P intermediate alloy has a good refinement effect on the Al-Si alloy and the Mg-Si alloy.
Description
Technical field
The invention belongs to metal material field, particularly a kind of aluminium-phosphorus master alloy that is used for Mg2Si in refinement Al-Si alloy primary silicon and the Mg-Si alloy and preparation method thereof.
Background technology
The general method that adds phosphorus that adopts is come the primary silicon (also claiming rotten the processing) in the refinement Al-Si alloy in the industrial production, mainly is to add with red phosphorus, microcosmic salt or phosphorus-forms such as copper master alloy.But these methods all exist many shortcomings: the burning-point of red phosphorus low (240 ℃) discharges a large amount of deleterious P during rotten the processing
2O
5Gas, serious environment pollution; Phosphorus-copper master alloy density is big, fusing point is high, is leaving standstill under the stove melting condition, joins the easy deposition in back, refractory in the aluminium alloy melt, and modification effect is unstable, and makes copper content increase in the alloy.Document " light metal " (Light Metals; 1993; 815～820) reported the novel process of a kind of production Solder for Al-Cu Joint Welding-phosphorus master alloy: use powder metallurgic method, Fine Aluminum Powder is mixed, colded pressing with copper-phosphorus master alloy powder and sintering in a vacuum, be squeezed into wire rod then at a certain temperature.The chemical ingredients of this master alloy (mass percent) is: copper 46.1, phosphorus 3.9, all the other are aluminium.The patent No. is that the Chinese patent of ZL011077704.2 has been reported Al-P-Cu master alloy and preparation method thereof, has used phosphorus-copper master alloy in the preparation process, is not suitable for not copper bearing aluminum silicon alloy; The patent No. is the preparation method that 200510044827.3 Chinese patent has been reported a kind of aluminium, silicon, phosphorus master alloy, has used multiple phosphorus-containing alloy; The patent No. is that 200910016834.0 Chinese patent has been reported a kind of aluminum-zirconium-phosphorus master alloy and preparation method thereof, uses zirconium or potassium fluozirconate to be raw material, has increased raw materials cost.Phosphorous aluminium base ternary that relates in above-mentioned document and the patent or the above master alloy of ternary because fragility is bigger, are difficult for being rolled into wire rod.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, provides a kind of and can play efficient metamorphism to primary silicon in the Al-Si alloy, and is pollution-free, easy to use, and binary with low cost aluminium-phosphorus master alloy and preparation method thereof.
The present invention realizes through following technical scheme;
A kind of aluminium-phosphorus master alloy comprises aluminium, two kinds of elements of phosphorus, it is characterized in that the mass percent of each component is: aluminium 92.5～98.5%, phosphorus 1.5～7.5%, foreign matter content＜0.8%.
Wherein, phosphorus is distributed on the aluminum substrate with aluminium phosphide (AlP) form in this master alloy, and aluminium phosphide and silicon crystal have close crystalline structure and lattice parameter.Theoretical according to the interface coherence, the heterogeneous body when aluminium phosphide can be used as the primary silicon crystallization is given birth to the nuclear substrate, and the Si atom is depended on it, crystallizes into tiny primary silicon crystal independently, thereby improves alloy structure, improves its mechanical property.
The preparation method of above-mentioned aluminium-phosphorus master alloy, realize through following steps:
(1) is ready to produce aluminium-needed raw material of phosphorus master alloy by following mass percent: 92.5～98.5% industrial aluminium powder, 1.5～7.5% black phosphorus powder;
(2) above-mentioned two kinds of powders are evenly mixed with mixer, and oven dry;
(3) with pressing machine above-mentioned powder is pressed into block;
(4) briquetting is placed electric furnace or other heating installation of inert atmosphere (nitrogen, argon gas), be warming up to 600～750 ℃, be incubated after 45～120 minutes, stop heating, furnace cooling promptly obtains the regular block aluminium-phosphorus master alloy of shape;
(5) agglomerate is squeezed into wire rod.
Above-mentioned is the preparation method of aluminium-phosphorus master alloy, and in its characterization step (1), aluminum powder particle size is 100～500 orders, and black phosphorus powder degree is 200～700 orders.
This kind method green non-pollution, yield rate height, product batches difference is little, and is prone to be squeezed into wire rod.The master alloy of preparing has the aluminium phosphide small and dispersed; Add-on is few; Characteristics such as modification effect is good, stable and long-acting; Be that the size that can make the primary silicon in the aluminum-silicon alloy is a kind of new and effective green alterant by refineing to below the 35 μ m more than the 100 μ m under 0.4% the situation in add-on.(phosphorization aluminium particle is more tiny among the Φ 6～16mm), satisfies the novel aluminum silicon alloy fully and produces online rotten treatment requirement to squeeze out wire rod.Therefore, the invention provides that a kind of fusing point is low, cheap, good in refining effect, be prone to aluminium phosphorus master alloy that is rolled in wire rod and preparation method thereof, have important industrial application value.
Embodiment
Provide three most preferred embodiments of the present invention below.
Embodiment one
(1) is ready to produce aluminium-needed raw material of phosphorus master alloy by following mass percent: 92.5% 200 orders industry aluminium powder, 7.5% 400 order black phosphorus powder;
(2) two kinds of powders are evenly mixed with mixer, and oven dry;
(3) with pressing machine above-mentioned powder is pressed into block;
(4) briquetting is placed the electric furnace of inert atmosphere (argon gas), be warming up to 640 ℃, be incubated and stop heating after 80 minutes, furnace cooling promptly obtains the regular block aluminium-phosphorus master alloy of shape;
(5) agglomerate is squeezed into Φ 9.5mm wire rod.
Obtain a kind of aluminium-phosphorus master alloy of optimal components according to said ratio and technology, the mass percent of its chemical ingredients is: aluminium 92.2, and phosphorus 7.3, all the other are impurity.
Embodiment two
(1) is ready to produce aluminium-needed raw material of phosphorus master alloy by following mass percent: 95.5% 300 orders industry aluminium powder, 4.5% 400 order black phosphorus powder;
(2) two kinds of powders are evenly mixed with mixer, and oven dry;
(3) with pressing machine above-mentioned powder is pressed into block;
(4) briquetting is placed the electric furnace of inert atmosphere (argon gas), be warming up to 660 ℃, be incubated and stop heating after 60 minutes, furnace cooling promptly obtains the regular block aluminium-phosphorus master alloy of shape;
(5) agglomerate is squeezed into Φ 9.5mm wire rod.
Obtain a kind of aluminium-phosphorus master alloy of optimal components according to said ratio and technology, the mass percent of its chemical ingredients is: aluminium 95.3, and phosphorus 4.3, all the other are impurity.
Embodiment three
(1) is ready to produce aluminium-needed raw material of phosphorus master alloy by following mass percent: 98.5% 500 orders industry aluminium powder, 1.5% 200 order black phosphorus powder;
(2) two kinds of powders are evenly mixed with mixer, and oven dry;
(3) with pressing machine above-mentioned powder is pressed into block;
(4) briquetting is placed the electric furnace of inert atmosphere (nitrogen), be warming up to 720 ℃, be incubated and stop heating after 90 minutes, furnace cooling promptly obtains the regular block aluminium-phosphorus master alloy of shape;
(5) agglomerate is squeezed into Φ 9.5mm wire rod.
Obtain a kind of aluminium-phosphorus master alloy of optimal components according to said ratio and technology, the mass percent of its chemical ingredients is: aluminium 98.2, and phosphorus 1.4, all the other are impurity.
Claims (4)
1. aluminium-phosphorus master alloy comprises aluminium, two kinds of elements of phosphorus, it is characterized in that the chemical ingredients mass percent of each component is: aluminium 92.5～98.5%, phosphorus 1.5～7.5%, foreign matter content＜0.8%.
2. according to the preparation method of claims 1 described aluminium-phosphorus master alloy, it is characterized in that may further comprise the steps:
(1) be ready to produce aluminium-needed raw material of phosphorus master alloy by following mass percent:
92.5～98.5% industrial aluminium powder, 1.5～7.5% black phosphorus powder;
(2) above-mentioned two kinds of powders are evenly mixed with mixer, and oven dry;
(3) with pressing machine above-mentioned powder is pressed into block;
(4) briquetting is placed electric furnace or other heating installation of inert atmosphere, be warming up to 600～750 ℃, be incubated after 45～120 minutes, stop heating, furnace cooling promptly obtains the regular block aluminium-phosphorus master alloy of shape;
(5) agglomerate is squeezed into wire rod.
3. according to the preparation method of claims 2 said aluminium-phosphorus master alloys, it is characterized in that: used aluminum powder particle size is 100～500 orders in the step (1), and black phosphorus powder degree is 200～700 orders.
4. according to the preparation method of claims 2 said aluminium-phosphorus master alloys, it is characterized in that: the inert atmosphere in the step (4) is nitrogen or argon gas.
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| CN2011103554778A CN102352455A (en) | 2011-11-10 | 2011-11-10 | Al-P intermediate alloy and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146940A (en) * | 2013-03-19 | 2013-06-12 | 山东大学 | Method for preparing alumium-phosphorus alloy |
| CN103436757A (en) * | 2013-08-06 | 2013-12-11 | 沈阳工业大学 | Magnesium-phosphorus intermediate alloy and preparation method thereof |
| CN105256190A (en) * | 2015-10-30 | 2016-01-20 | 苏州列治埃盟新材料技术转移有限公司 | Multi-doped intermediate alloy material and preparation method thereof |
| CN105603236A (en) * | 2016-02-01 | 2016-05-25 | 中山市三丰金属锻造有限公司 | Preparation method of aluminum-silicon alloy modifier |
-
2011
- 2011-11-10 CN CN2011103554778A patent/CN102352455A/en active Pending
Non-Patent Citations (4)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库工程科技I辑》 20090115 胡小琳 "Al-P系中间合金粉末冶金合成工艺研究" 第18，31及33页 2-4 , 第01期 * |
| 《山东吕美熔体技术有限公司产品中心》 20110415 山东吕美熔体技术有限公司 "Al-P中间合金" 第1-3页 1-4 , * |
| 山东吕美熔体技术有限公司: ""Al-P中间合金"", 《山东吕美熔体技术有限公司产品中心》 * |
| 胡小琳: ""Al-P系中间合金粉末冶金合成工艺研究"", 《中国优秀硕士学位论文全文数据库工程科技I辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103146940A (en) * | 2013-03-19 | 2013-06-12 | 山东大学 | Method for preparing alumium-phosphorus alloy |
| CN103436757A (en) * | 2013-08-06 | 2013-12-11 | 沈阳工业大学 | Magnesium-phosphorus intermediate alloy and preparation method thereof |
| CN103436757B (en) * | 2013-08-06 | 2016-03-16 | 沈阳工业大学 | The preparation method of magnesium-phosphorus master alloy |
| CN105256190A (en) * | 2015-10-30 | 2016-01-20 | 苏州列治埃盟新材料技术转移有限公司 | Multi-doped intermediate alloy material and preparation method thereof |
| CN105603236A (en) * | 2016-02-01 | 2016-05-25 | 中山市三丰金属锻造有限公司 | Preparation method of aluminum-silicon alloy modifier |
| CN105603236B (en) * | 2016-02-01 | 2017-05-17 | 中山市三丰金属锻造有限公司 | Preparation method of aluminum-silicon alloy modifier |
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Application publication date: 20120215 |