CN109266882A - Aluminium alloy titanium additives - Google Patents
Aluminium alloy titanium additives Download PDFInfo
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- CN109266882A CN109266882A CN201811509999.7A CN201811509999A CN109266882A CN 109266882 A CN109266882 A CN 109266882A CN 201811509999 A CN201811509999 A CN 201811509999A CN 109266882 A CN109266882 A CN 109266882A
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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
- C22C1/026—Alloys based on aluminium
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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Abstract
The present invention relates to aluminium alloy smelting technical field more particularly to a kind of aluminium alloy titanium additives.The titanium additives include following components, each component is respectively as follows: 20-30 parts of spongy titanium powder, 60-65 parts of hydrogenation dehydrogenation titanium powder, 3-10 parts of aluminium powder, agent 0.5-1.0 parts, 0.2-0.5 parts of forming agent of heating with mass parts calculating, each component is after mixing, it is prepared into bulk, bulk titanium additives obtained are added in aluminium alloy smelting.Titanium additives include two different kinds of titanium valve, i.e. spongy titanium powder and hydrogenation dehydrogenation titanium powder.Different types of titanium valve can form the heterogeneous forming core core of different-grain diameter with the aluminium in aluminium alloy, so that the crystal grain of aluminium alloy more refines.The mixing of a variety of titanium valves is so that titanium additives can be suitably used for the melting of variety classes aluminium alloy.
Description
Technical field
The present invention relates to aluminium alloy smelting technical field more particularly to a kind of aluminium alloy titanium additives.
Background technique
Currently, aluminium is as raw material for producing the aluminiums such as aluminium sheet, aluminium strip, aluminium foil, aluminum pipe, aluminium profiles, aluminium diecasting, aluminium casting
Outside.Alloying can also be realized by the way that the elements such as iron, manganese, copper, chromium, titanium, silicon are added, be finally processed into all kinds of aluminium alloys and produce
Product.Titanium forms TiAl with aluminium in aluminium alloy3Phase becomes heterogeneous forming core core when crystallization, plays the work of refining aluminum alloy crystal grain
With.Aluminum grain refinement can bring a series of benefit to aluminium alloy, such as: improve surface quality of continuous castings and mechanicalness
Energy；Casting is set to obtain tiny equiax crystal；Improve feeding capacity when solidification, improves casting compactness；Casting cold shut is reduced to disappear
Except feather is brilliant and column crystal；It reduces and casts loose and crackle；Improve internal metallurgical quality and casting of appearance of cast etc..
Traditional aluminium alloy is mainly made of a kind of titanium metal powder and fluxing agent with titanium additives, from the 1970s
It rises, generally uses this kind of traditional titanium additives containing halide salt both at home and abroad.Under the action of fluxing agent, titanium metal powder
It can be melted rapidly in aluminum melt, to achieve the purpose that add titanium elements.The titanium powder of single kind with for certain aluminium
The Grain Refinement Effect of alloy is unable to reach requirement.
In addition, not only causing environment pollution containing elements such as a large amount of sodium, fluorine in fluxing agent, also seriously affecting human body
Health.
Accordingly, it is desirable to provide a kind of new technical solution, to solve the above technical problems.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved by the present invention is the titanium powder of single kind and the crystal grain refinement for certain aluminium alloys
Effect is unable to reach requirement.
(2) technical solution
In order to solve the above-mentioned technical problem, the embodiment of the present disclosure provides a kind of aluminium alloy titanium additives.Titanium addition
Agent includes following components, and each component is respectively as follows: with mass parts calculating
20-30 parts of spongy titanium powder,
60-65 parts of hydrogenation dehydrogenation titanium powder,
3-10 parts of aluminium powder,
Agent 0.5-1.0 parts of heating,
0.2-0.5 parts of forming agent,
Each component after mixing, is prepared into bulk, and bulk titanium additives obtained are added in aluminium alloy smelting.
Preferably, the granularity of the spongy titanium powder is 20-100 mesh, and the granularity of the hydrogenation dehydrogenation titanium powder is 40-150 mesh,
The granularity of the aluminium powder is 20-100 mesh, and the granularity of the heating agent is 20-100 mesh, and the granularity of the forming agent is 180-325
Mesh.
Preferably, the purity of the spongy titanium powder is 99.0% or more, and the purity of the hydrogenation dehydrogenation titanium powder is 95.0%
More than, the purity of the aluminium powder is 99.7% or more.
Preferably, the aluminium alloy is with titanium additives in the bulk of patty.
Preferably, each component is uniformly mixed using horizontal drum batch mixer, to form mixture, using press machine by institute
State the bulk that mixture is pressed into patty.
Preferably, the heating agent includes magnesium powder, potassium nitrate, silica, iron oxide and expansible graphite.
Preferably, it in the heating agent, is calculated according to mass parts, magnesium powder is 60-90 parts, potassium nitrate is 8-13 parts, two
Silica is 3-6 parts, iron oxide is 2-6 parts, expansible graphite is 0.5-1.5 parts, and the heating agent is graininess.
Preferably, the forming agent includes carbon tetrachloride, barium stearate, paraffin, benzoic acid, microwax, beeswax and palm
Wax.
Preferably, it in the forming agent, is calculated according to mass parts, carbon tetrachloride is 30-50 parts, barium stearate 30-
40 parts, paraffin be 7-12 parts, benzoic acid is 3-6 parts, microwax is 4-7 parts, beeswax is 2-4 parts, palm wax is 1-3 parts.
According to another embodiment of the present disclosure, a kind of preparation method of aluminium alloy titanium additives is provided.The preparation
Method includes:
Raw material is broken: by spongy titanium powder, hydrogenation dehydrogenation titanium powder, aluminium powder under the conditions of vacuum condition or inert gas shielding
It is ground into the granularity of setting, each component is respectively as follows: with mass parts calculating
20-30 parts of spongy titanium powder,
60-65 parts of hydrogenation dehydrogenation titanium powder,
3-10 parts of aluminium powder,
Agent 0.5-1.0 parts of heating,
0.2-0.5 parts of forming agent；
Mixing: horizontal drum is added in smashed spongy titanium powder, hydrogenation dehydrogenation titanium powder, aluminium powder, heating agent and forming agent
It is stirred in batch mixer；
Compression moulding: the material after stirring is added in press machine, to be pressed into bulk.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that titanium additives include two different kinds of titanium valve, i.e., extra large
Continuous titanium valve and hydrogenation dehydrogenation titanium powder.Different types of titanium valve can form the heterogeneous forming core core of different-grain diameter with the aluminium in aluminium alloy
The heart, so that the crystal grain of aluminium alloy more refines.The mixing of a variety of titanium valves is so that titanium additives can be suitably used for variety classes aluminium alloy
Melting.
In addition, without containing the elements such as sodium, fluorine, safety and environmental protection in the titanium additives.
In addition, the titanium additives of block structure are readily transported, and when being added in aluminium alloy smelting, will not generate
Dust, good security.
In addition, the addition of heating agent can play good heat insulation effect, energy when aluminium alloy smelting is effectively saved
Consumption.
Detailed description of the invention
Fig. 1 is the flow chart according to the preparation method of the aluminium alloy titanium additives of one embodiment of the disclosure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
According to one embodiment of the disclosure, a kind of aluminium alloy titanium additives are provided.The titanium additives include following
Component, each component are respectively as follows: with mass parts calculating
20-30 parts of spongy titanium powder,
60-65 parts of hydrogenation dehydrogenation titanium powder,
3-10 parts of aluminium powder,
Agent 0.5-1.0 parts of heating,
0.2-0.5 parts of forming agent,
Each component after mixing, is prepared into bulk, and bulk titanium additives obtained are added in aluminium alloy smelting.
Spongy titanium powder refers to the biscuit titanium valve produced using metallothermic processes.Spongy titanium powder is using mechanical broken
It is broken to form.Preferably, the purity of spongy titanium powder is 99.0% or more.Hydrogenation dehydrogenation titanium powder refers to using titanium to the reversible of hydrogen
The titanium valve that Absorption Characteristics are produced.According to the physicochemical properties of Ti-H system it is found that the compound of titanium and titanium is in certain temperature
And suction hydrogen is carried out under Hydrogen Vapor Pressure, Hydrogen Brittleness Phenomena occurs for titanium after inhaling hydrogen to a certain extent, is easy to be crushed by mechanical forces such as ball millings, quilt
Powder crush and containing a large amount of hydrogen are known as hydride powder.By hydride powder, dehydrogenation is just obtained under high temperature, vacuum condition
Hydrogenation dehydrogenation titanium powder.The simple sponge of the ratio too powder burn-off rate of hydrogenation dehydrogenation titanium powder is fast, can significantly improve the fusing of titanium additives
Speed.Hydrogenation dehydrogenation titanium powder uses ball milling to be crushed to reach the partial size of setting.Preferably, the purity of hydrogenation dehydrogenation titanium powder is
95.0% or more.
Aluminium powder is commercially available common aluminium powder.The aluminium powder is formed by the way of molten atomizing, has particle exquisiteness, uniformly
Feature, can be promptly dissolved in molten aluminum.Preferably, the purity of aluminium powder is 99.7% or more.The sea of above-mentioned purity range
The impurity of continuous titanium valve, hydrogenation dehydrogenation titanium powder and aluminium powder is few, is not easy to form the nucleus of foreign peoples in grain refinement process, ensure that crystalline substance
The consistency of grain refinement, stability.
Heating agent can improve local temperature in titanium additives fusion process, be that titanium additives are easier to melt and expand
It dissipates.
In one example, the heating agent includes magnesium powder, potassium nitrate, silica, iron oxide and expansible graphite.It should
The heat insulation effect for heating agent is good, and the heating layer of formation, poly- slag blanket, insulating layer are stablized.
Preferably, it in the heating agent, is calculated according to mass parts, magnesium powder is 60-90 parts, potassium nitrate is 8-13 parts, two
Silica is 3-6 parts, iron oxide is 2-6 parts, expansible graphite is 0.5-1.5 parts, and the heating agent is graininess.In above-mentioned ratio
Heat insulation effect, the shaped form of heating agent, have good stability in example range.
Further, it in the heating agent, is calculated according to mass parts, magnesium powder is 79 parts, potassium nitrate is 10 parts, titanium dioxide
Silicon is 5 parts, iron oxide is 5 parts, expansible graphite is 1 part, and the heating agent is graininess.
In other examples, heating agent is other exothermic materials and thermal insulation material, and those skilled in the art can be according to reality
Border is selected.
Forming agent can play the role of bonding when titanium additives are formed, so that each component can be incorporated in one
It rises.Forming agent can also play the role of lubrication when aluminium block demoulds.In addition, forming agent is in titanium additives in a mold by powdered form
After being prepared into block structure, lubrication can be played the role of, reduce the binding force between block structure and mold, so that blocky knot
The demoulding of structure becomes easy.
In one example, the forming agent includes carbon tetrachloride, barium stearate, paraffin, benzoic acid, microwax, beeswax
And palm wax.Above-mentioned forming agent has the characteristics that cohesive force is strong, and in melting, small for the pollution of molten aluminum.
Preferably, it in the forming agent, is calculated according to mass parts, carbon tetrachloride is 30-50 parts, barium stearate 30-
40 parts, paraffin be 7-12 parts, benzoic acid is 3-6 parts, microwax is 4-7 parts, beeswax is 2-4 parts, palm wax is 1-3 parts.At this
In range, the adhesive property of forming agent is good.
Further, it in the forming agent, is calculated according to mass parts, carbon tetrachloride is 40 parts, barium stearate is 35 parts,
Paraffin is 10 parts, benzoic acid is 5 parts, microwax is 5 parts, beeswax is 3 parts, palm wax is 2 parts.Titanium addition in the proportional region
Agent has modest viscosity, lasting feature.
In other examples, forming agent can equally play good bonding, demoulding profit using stearic acid, magnesium stearate etc.
Sliding effect.
Above-mentioned various components are prepared to the granularity of setting before mixing.For example, the granularity of the spongy titanium powder is 20-
100 mesh, the granularity of the hydrogenation dehydrogenation titanium powder are 40-150 mesh, and the granularity of the aluminium powder is 20-100 mesh, the heating agent
Granularity is 20-100 mesh, and the granularity of the forming agent is 180-325 mesh.For example, each component is mixed using horizontal drum batch mixer
It closes uniformly, to form mixture.The various components of above-mentioned particle size range mixing when can mix it is more uniform so that titanium adds
Add the quality of agent uniform.
In addition, when the titanium additives of above-mentioned particle size range carry out melting in being added into aluminum feedstock, it can be promptly molten
Solution, and favorable dispersibility.
In this example embodiment, titanium additives include two different kinds of titanium valve, i.e. spongy titanium powder and hydrogenation dehydrogenation titanium powder.No
Congener titanium valve can form the heterogeneous forming core core of different-grain diameter with the aluminium in aluminium alloy, so that the crystal grain of aluminium alloy is more
Refinement.The mixing of a variety of titanium valves is so that titanium additives can be suitably used for the melting of variety classes aluminium alloy.Titanium additives are adjustable aluminium
The ingredient of alloy improves intensity, toughness, the corrosion resistance of aluminium alloy.
In addition, the titanium additives are easier to melt compared to the titanium valve of single kind.
In addition, without containing the elements such as sodium, fluorine, safety and environmental protection in the titanium additives.
In addition, the titanium additives of block structure are readily transported, and when being added in aluminium alloy smelting, will not generate
Dust, good security.
In addition, the addition of heating agent can play good heat insulation effect, energy when aluminium alloy smelting is effectively saved
Consumption.
In one example, the aluminium alloy is with titanium additives in the bulk of patty.The titanium additives of the shape are in aluminium
It can slowly be melted in water, to form more excellent aluminum alloy materials.It can be controlled by the way that size of block structure etc. is arranged
Solution rate of the titanium additives processed in molten aluminum.
Certainly, titanium additives can also be prepared into other block structures, for example, rectangular blocky, oval bulk etc..
In one example, the mixture is pressed into the bulk of patty using press machine.The circle that the equipment is formed
Cheese block structure has the characteristics that structural strength is high.
According to another embodiment of the present disclosure, a kind of preparation method of aluminium alloy titanium additives is provided.The preparation
Method includes:
S1, raw material are broken: by spongy titanium powder, hydrogenation dehydrogenation titanium powder, aluminium powder in vacuum condition or inert gas shielding item
The granularity of setting is ground under part.For example, being crushed using ball milling, crusher etc..Each component is respectively as follows: with mass parts calculating
20-30 parts of spongy titanium powder,
60-65 parts of hydrogenation dehydrogenation titanium powder,
3-10 parts of aluminium powder,
Agent 0.5-1.0 parts of heating,
0.2-0.5 parts of forming agent.
S2, mixing: horizontal rolling is added in smashed spongy titanium powder, hydrogenation dehydrogenation titanium powder, aluminium powder, heating agent and forming agent
It is stirred in cylinder batch mixer.In this step, various components are further mixed, so that a minute material be made to become more
It is even, fine and smooth.
S3, compression moulding: the material after stirring is added in press machine, to be pressed into bulk.In this step, material quilt
It is added in mold, is compacted by press machine, to form block structure.
For example, forming the titanium additives of patty, density 2.8-3.0g/cm through above-mentioned preparation method3.The range
The molten dissolubility of interior titanium additives is good.The diameter of the titanium additives of patty is 60-100mm, is highly 20-50mm.
Further, the diameter of the titanium additives of patty is 70mm, is highly 40mm.The titanium additives of the size,
Solution rate in molten aluminum is moderate.
The structural integrity for the titanium additives that the preparation method is formed, cracky, is not convenient for long-distance transport.
The above is only a kind of preferred embodiment of the invention, it is noted that for the common skill of the art
For art personnel, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improve and
Modification also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of aluminium alloy titanium additives, wherein including following components, each component is respectively as follows: with mass parts calculating
20-30 parts of spongy titanium powder,
60-65 parts of hydrogenation dehydrogenation titanium powder,
3-10 parts of aluminium powder,
Agent 0.5-1.0 parts of heating,
0.2-0.5 parts of forming agent,
Each component after mixing, is prepared into bulk, and bulk titanium additives obtained are added in aluminium alloy smelting.
2. aluminium alloy titanium additives according to claim 1, wherein the granularity of the spongy titanium powder is 20-100 mesh,
The granularity of the hydrogenation dehydrogenation titanium powder is 40-150 mesh, and the granularity of the aluminium powder is 20-100 mesh, and the granularity of the heating agent is
20-100 mesh, the granularity of the forming agent are 180-325 mesh.
3. aluminium alloy titanium additives according to claim 1, wherein the purity of the spongy titanium powder be 99.0% with
On, the purity of the hydrogenation dehydrogenation titanium powder is 95.0% or more, and the purity of the aluminium powder is 99.7% or more.
4. aluminium alloy titanium additives according to claim 1, wherein the aluminium alloy is with titanium additives in patty
It is blocky.
5. aluminium alloy titanium additives according to claim 4, wherein mixed each component using horizontal drum batch mixer
Uniformly, to form mixture, the mixture is pressed into the bulk of patty using press machine.
6. aluminium alloy titanium additives according to claim 1, wherein the heating agent includes magnesium powder, potassium nitrate, dioxy
SiClx, iron oxide and expansible graphite.
7. aluminium alloy titanium additives according to claim 6, wherein in the heating agent, calculated according to mass parts,
Magnesium powder is 60-90 parts, potassium nitrate is 8-13 parts, silica is 3-6 parts, iron oxide is 2-6 parts, expansible graphite 0.5-
1.5 parts, the heating agent is graininess.
8. aluminium alloy titanium additives according to claim 1, wherein the forming agent includes carbon tetrachloride, stearic acid
Barium, paraffin, benzoic acid, microwax, beeswax and palm wax.
9. aluminium alloy titanium additives according to claim 8, wherein in the forming agent, calculated according to mass parts,
Carbon tetrachloride is 30-50 parts, barium stearate is 30-40 parts, paraffin is 7-12 parts, benzoic acid is 3-6 parts, microwax is 4-7 parts,
Beeswax is 2-4 parts, palm wax is 1-3 parts.
10. a kind of preparation method of aluminium alloy titanium additives, wherein include:
Raw material is broken: spongy titanium powder, hydrogenation dehydrogenation titanium powder, aluminium powder are crushed under the conditions of vacuum condition or inert gas shielding
At the granularity of setting, each component is respectively as follows: with mass parts calculating
20-30 parts of spongy titanium powder,
60-65 parts of hydrogenation dehydrogenation titanium powder,
3-10 parts of aluminium powder,
Agent 0.5-1.0 parts of heating,
0.2-0.5 parts of forming agent；
Mixing: horizontal drum mixing is added in smashed spongy titanium powder, hydrogenation dehydrogenation titanium powder, aluminium powder, heating agent and forming agent
It is stirred in machine；
Compression moulding: the material after stirring is added in press machine, to be pressed into bulk.
Priority Applications (1)
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| CN201811509999.7A CN109266882A (en) | 2018-12-11 | 2018-12-11 | Aluminium alloy titanium additives |
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| CN201811509999.7A CN109266882A (en) | 2018-12-11 | 2018-12-11 | Aluminium alloy titanium additives |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118321A (en) * | 2019-12-25 | 2020-05-08 | 哈尔滨东盛金属材料有限公司 | Aluminum alloy chromium additive and preparation method thereof |
| CN111254301A (en) * | 2020-04-07 | 2020-06-09 | 昆明冶金研究院有限公司 | Efficient environment-friendly titanium additive and preparation method and application thereof |
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Cited By (2)
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| CN111118321A (en) * | 2019-12-25 | 2020-05-08 | 哈尔滨东盛金属材料有限公司 | Aluminum alloy chromium additive and preparation method thereof |
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Application publication date: 20190125 |