CN110396625A - A kind of preparation method of antiwear heat resisting aluminium alloy - Google Patents
A kind of preparation method of antiwear heat resisting aluminium alloy Download PDFInfo
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- CN110396625A CN110396625A CN201910604187.9A CN201910604187A CN110396625A CN 110396625 A CN110396625 A CN 110396625A CN 201910604187 A CN201910604187 A CN 201910604187A CN 110396625 A CN110396625 A CN 110396625A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
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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
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
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Abstract
The present invention provides a kind of preparation method of antiwear heat resisting aluminium alloy, includes the following steps: by mass percentage, by raw material in 16%-24%Si, 4%-6%Fe, 1%-4%Ni, the ratio ingredient that surplus is Al；Melting in medium-frequency induction furnace is added in aluminium ingot, smelting temperature is 700-950 DEG C, forms molten aluminum；Aluminium silicon intermediate alloy is pressed into the molten aluminum；Secondary addition aluminium ingot, when melt temperature be 720-970 DEG C when, be added ferro-aluminum intermediate alloy and and aluminium nickel intermediate alloy, stir until completely melted；Deslagging agent is added, refined, removed the gred, degasification, the molten aluminum after cleaning for the first time is obtained；Molten aluminum after first time is cleaned is poured into tundish and is kept the temperature；Heat preservation stands 20-30min after secondary slagging-off, degasification；Injection forming.The present invention overcomes the problems, such as that the high alusil alloy microstructure segregation of conventional casting techniques preparation and silicon particle are coarse, increases substantially the mechanical property and processing performance of silumin.
Description
Technical field
The invention belongs to preparation process of aluminium alloy field more particularly to a kind of preparation methods of antiwear heat resisting aluminium alloy.
Background technique
High-silicon abrasion resistant heat-resisting aluminium alloy has specific gravity small, and density is low, thermal expansion coefficient is low, thermal conductivity is high, wear-resisting, corrosion resistance
Good and excellent high-temperature behavior, is increasingly becoming the research hotspot in terms of domestic and international novel wear resistant heat proof material, is widely used as
Heat-resistant antifriction part used in the fields such as communications and transportation and machine-building.However, the hypereutectic al-si of traditional fusion casting preparation closes
In payment organization, there are component segregation, primary silicon and eutectic silicon are excessively coarse, so that its mechanical property and processing performance cannot
Meet industry development.Currently, mainly reaching refinement using modes such as alloying, Metamorphism treatment and hot investment castings for this problem
The purpose of tissue.But the primary silicon in transcocrystallized Al-Si alloy is mutually in polygonal shape, and with the increase of silicon content and thick
Change, adverse effect of the silicon with respect to alloy substrate can not be eliminated using the methods of Metamorphism treatment, this problem limits silicon
Element additional amount further increases, and Wear Resistance and low expansion potentiality is also made to be difficult to play.So that conventional cast aluminium closes
Golden mechanical property is low and poor processability.
Summary of the invention
In order to solve the above-mentioned technical problem, the invention discloses a kind of preparation methods of antiwear heat resisting aluminium alloy.In order to right
The some aspects of the embodiment of disclosure have a basic understanding, and simple summary is shown below.The summarized section is not general
General commentary, nor to determine key/critical component or describe the protection scope of these embodiments.Its sole purpose is to use
Some concepts are presented in simple form, in this, as the preamble of following detailed description.
The present invention adopts the following technical scheme:
In some alternative embodiments, a kind of preparation method of antiwear heat resisting aluminium alloy, includes the following steps:
S1: by mass percentage, raw material are pressed into 16%-24%Si, 4%-6%Fe, 1%-4%Ni, surplus Al
Ratio ingredient；
S2: being added melting in medium-frequency induction furnace for aluminium ingot, and smelting temperature is 700-950 DEG C, forms molten aluminum；
S3: aluminium silicon intermediate alloy is pressed into the molten aluminum；
S4: secondary addition aluminium ingot, when melt temperature be 720-970 DEG C when, be added ferro-aluminum intermediate alloy and and aluminium nickel among
Alloy stirs until completely melted；
S5: being added deslagging agent, refined, removed the gred, degasification, obtains the molten aluminum after cleaning for the first time；
S6: the molten aluminum after first time is cleaned is poured into tundish and is kept the temperature；
S7: heat preservation stands 20-30min after secondary slagging-off, degasification；
S8: injection forming.
Wherein, the step S8 includes the following steps:
S801: to spray rake angle for 20-40 °, distance 500-700mm is received, receives disk rotating speed 40-60r/min, decline
Speed 2-4mm/s, 700-900 DEG C of atomization temperature, the parameter of atomizing pressure 0.5-0.9MPa prepares ingot using injection former
Base；
S802: after the completion of injection, ingot blank is cooled to 200 DEG C in settling chamber, taking-up is air-cooled to room temperature；
S803: Vehicle Processing removes the surface layer of step S802 treated ingot blank, removes with a thickness of 3-5mm；
S804: using extruder, to step S803, treated that ingot blank squeezes, and obtains extruded bars.
Wherein, the aluminium ingot and the step S quality of ingot aluminum ratio that the step S2 is added are 2:1.
Wherein, deslagging agent C2Cl6。
Wherein, holding temperature is 700-900 DEG C in the step S6.
Wherein, in the step S804, fixed 400-430 DEG C of the temperature of the extrusion cylinder of extruder, primary push rod rate is less than 1mm/s.
Wherein, in the step S804, extrusion ratio 10-25.
The utility model has the advantages that the high alusil alloy microstructure segregation and silicon that overcome conventional casting techniques to prepare brought by of the invention
The coarse problem of grain, increases substantially the mechanical property and processing performance of silumin.
For the above and related purposes, one or more embodiments include being particularly described below and in claim
In the feature that particularly points out.Certain illustrative aspects are described in detail in the following description and the annexed drawings, and its instruction is only
Some modes in the utilizable various modes of the principle of each embodiment.Other benefits and novel features will be under
The detailed description in face is considered in conjunction with the accompanying and becomes obvious, the disclosed embodiments be all such aspects to be included and they
Be equal.
Detailed description of the invention
Fig. 1 is T6 state metallograph.
Specific embodiment
The following description and drawings fully show specific embodiments of the present invention, to enable those skilled in the art to
Practice them.The part of some embodiments and feature can be included in or replace part and the feature of other embodiments.
The range of embodiment of the present invention include claims entire scope and claims it is all obtainable etc.
Jljl.
In some illustrative embodiments, a kind of preparation method of antiwear heat resisting aluminium alloy, includes the following steps:
S1: by mass percentage, raw material are pressed into 16%-24%Si, 4%-6%Fe, 1%-4%Ni, surplus Al
Ratio ingredient；Raw material include the aluminium ingot of commercial-purity aluminium, aluminium silicon intermediate alloy, ferro-aluminum intermediate alloy, aluminium nickel intermediate alloy.
S2: being added melting in medium-frequency induction furnace for aluminium ingot, and smelting temperature is 700-950 DEG C, is melted to paste to aluminium ingot
Molten aluminum is formed when state；
S3: aluminium silicon intermediate alloy is pressed into the molten aluminum；
S4: secondary addition aluminium ingot inhibits the floating of aluminium silicon intermediate alloy, and when melt temperature is 720-970 DEG C, aluminium is added
Iron intermediate alloy and and aluminium nickel intermediate alloy, stir until completely melted；
S5: the C for accounting for charging weight 0.3-0.5% is added in the molten aluminum of S4 step2Cl6Deslagging agent, refined, removed the gred,
Degasification obtains the molten aluminum after cleaning for the first time；
S6: the molten aluminum after first time is cleaned is poured into tundish and is kept the temperature；Holding temperature is 700-900 DEG C.
S7: heat preservation stands 20-30min after secondary slagging-off, degasification；
S8: injection forming.
S801: using injection former, using nitrogen as atomization gas and protective atmosphere, by step S7 treated molten aluminum mist
It is melted into particle injection stream, technological parameter are as follows: injection rake angle is 20-40 °, receives distance 500-700mm, receives disk rotating speed 40-
60r/min, decrease speed 2-4mm/s, 700-900 DEG C of atomization temperature, atomizing pressure 0.5-0.9MPa；By infrared induction to control
The size of the final injection ingot blank of system and the flow of particle injection stream, and tell particle injection stream and deposit on matrix, solidify shape
At ingot blank.Whole process need to completely cut off air or oxygen.
S802: after the completion of injection, ingot blank is cooled to 200 DEG C in settling chamber, taking-up is air-cooled to room temperature；
S803: Vehicle Processing removes the surface layer of step S802 treated ingot blank, removes with a thickness of 3-5mm；
S804: using extruder, to step S803, treated that ingot blank squeezes, and obtains extruded bars.Preferably, right
Treated that ingot blank is preheating to 400-500 DEG C by step S803.Fixed 400-430 DEG C of the temperature of the extrusion cylinder of extruder, primary push rod rate is small
In 1mm/s.Extrusion ratio is 10-25.Needed for extruded bars become any by processes such as post-processings such as polishing, polishing, cutting
Shape.
Wherein, the aluminium ingot and the step S quality of ingot aluminum ratio that the step S2 is added are 2:1.
A kind of antiwear heat resisting aluminium alloy is prepared with above-mentioned steps: by fine aluminium, aluminium silicon intermediate alloy, ferro-aluminum intermediate alloy, aluminium
Nickel intermediate alloy is put into melting in intermediate frequency furnace, smelting temperature 780- in the ratio mixing that Al:Si:Fe:Ni is 73:20:5:2
900℃.Using spray deposition processing parameter are as follows: with nitrogen as atomization gas and protective atmosphere, by the liquid metal in tundish
It is atomized into particle injection stream.Spray technology parameter is 35 ° of oblique spray angle, receives distance 600mm, receives disk rotating speed 50r/min, under
Reduction of speed degree 2mm/s, 830~900 DEG C of atomization temperature, atomizing pressure 0.6MPa.Vehicle Processing removes 5mm ingot blank surface layer.Use extruding
Machine squeezes injection blank, and by blank heating to 450 DEG C, extrusion cylinder is fixed 430 DEG C, primary push rod rate 0.8mm/s warm, and extrusion ratio is
20, extruded bars are obtained, T6 state metallograph is shown in Fig. 1.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent substitution, improvement and etc. done be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of preparation method of antiwear heat resisting aluminium alloy, which comprises the steps of:
S1: by mass percentage, by raw material by 16%-24%Si, 4%-6%Fe, 1%-4%Ni, the ratio that surplus is Al
Example ingredient；
S2: being added melting in medium-frequency induction furnace for aluminium ingot, and smelting temperature is 700-950 DEG C, forms molten aluminum；
S3: aluminium silicon intermediate alloy is pressed into the molten aluminum；
S4: secondary addition aluminium ingot, when melt temperature be 720-970 DEG C when, be added ferro-aluminum intermediate alloy and and aluminium nickel intermediate alloy,
It stirs until completely melted；
S5: being added deslagging agent, refined, removed the gred, degasification, obtains the molten aluminum after cleaning for the first time；
S6: the molten aluminum after first time is cleaned is poured into tundish and is kept the temperature；
S7: heat preservation stands 20-30min after secondary slagging-off, degasification；
S8: injection forming.
2. a kind of preparation method of antiwear heat resisting aluminium alloy as described in claim 1, which is characterized in that the step S8 includes
Following steps:
S801: to spray rake angle for 20-40 °, distance 500-700mm is received, disk rotating speed 40-60r/min, decrease speed are received
2-4mm/s, 700-900 DEG C of atomization temperature, the parameter of atomizing pressure 0.5-0.9MPa prepares ingot blank using injection former；
S802: after the completion of injection, ingot blank is cooled to 200 DEG C in settling chamber, taking-up is air-cooled to room temperature；
S803: Vehicle Processing removes the surface layer of step S802 treated ingot blank, removes with a thickness of 3-5mm；
S804: using extruder, to step S803, treated that ingot blank squeezes, and obtains extruded bars.
3. a kind of preparation method of antiwear heat resisting aluminium alloy as claimed in claim 2, which is characterized in that the step S2 is added
Aluminium ingot and the step S quality of ingot aluminum ratio be 2:1.
4. a kind of preparation method of antiwear heat resisting aluminium alloy as claimed in claim 3, which is characterized in that deslagging agent C2Cl6。
5. a kind of preparation method of antiwear heat resisting aluminium alloy as claimed in claim 4, which is characterized in that protected in the step S6
Temperature is 700-900 DEG C.
6. a kind of preparation method of antiwear heat resisting aluminium alloy as claimed in claim 5, which is characterized in that the step S804
In, fixed 400-430 DEG C of the temperature of the extrusion cylinder of extruder, primary push rod rate is less than 1mm/s.
7. a kind of preparation method of antiwear heat resisting aluminium alloy as claimed in claim 6, which is characterized in that the step S804
In, extrusion ratio 10-25.
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| CN201910604187.9A CN110396625A (en) | 2019-07-05 | 2019-07-05 | A kind of preparation method of antiwear heat resisting aluminium alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101026A (en) * | 2019-12-06 | 2020-05-05 | 江苏理工学院 | Preparation method of high-strength high-toughness aluminum-based composite material |
| CN113430424A (en) * | 2021-06-29 | 2021-09-24 | 南京航空航天大学 | Low-cost high-performance aluminum-silicon alloy and preparation method thereof |
| CN113718140A (en) * | 2021-08-18 | 2021-11-30 | 江苏豪然喷射成形合金有限公司 | Ultrahigh-performance spray-formed aluminum-silicon-iron-nickel-vanadium alloy and preparation method thereof |
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| JP2018197390A (en) * | 2017-05-24 | 2018-12-13 | トーカロ株式会社 | Member for hot-dip metal plating bath |
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| JP2018197390A (en) * | 2017-05-24 | 2018-12-13 | トーカロ株式会社 | Member for hot-dip metal plating bath |
| CN109722570A (en) * | 2018-10-11 | 2019-05-07 | 江苏豪然喷射成形合金有限公司 | A kind of high rigidity, the novel aluminium lithium alloy of low-density and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111101026A (en) * | 2019-12-06 | 2020-05-05 | 江苏理工学院 | Preparation method of high-strength high-toughness aluminum-based composite material |
| CN113430424A (en) * | 2021-06-29 | 2021-09-24 | 南京航空航天大学 | Low-cost high-performance aluminum-silicon alloy and preparation method thereof |
| CN113718140A (en) * | 2021-08-18 | 2021-11-30 | 江苏豪然喷射成形合金有限公司 | Ultrahigh-performance spray-formed aluminum-silicon-iron-nickel-vanadium alloy and preparation method thereof |
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Application publication date: 20191101 |