CN106077683A - Its bi-metal shaft bushing material copper alloy powder of a kind of copper and tin bismuth alloy powder and aerosolization preparation method and application thereof - Google Patents
Its bi-metal shaft bushing material copper alloy powder of a kind of copper and tin bismuth alloy powder and aerosolization preparation method and application thereof Download PDFInfo
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/02—Alloys based on copper with tin as the next major constituent
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/088—Fluid nozzles, e.g. angle, distance
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Abstract
The present invention relates to its bi-metal shaft bushing material copper alloy powder of a kind of copper and tin bismuth alloy powder and aerosolization preparation method and application thereof, wherein embodiment of the method comprises the following steps: the copper selecting percentage by weight to be 89～91%, 5～the stannum of 7%, 3～the bismuth of 4%, Cu is heated in air atmosphere 1083～1090 DEG C of fusings, adds Sn, Bi melting and form aluminium alloy, temperature 1100～1120 DEG C, time 15～20 minutes；After be warming up to 1150～1200 DEG C；Drag for clean bits, use restraint-type circumferential weld nozzle to be atomized with 0.7～1.0Mpa air pressure；Screening, it is thus achieved that copper and tin bismuth alloy powder.The present invention, on the basis of copper and tin bismuth alloy powder, with the addition of Fe3P powder and MoSi2Powder, reduces friction loss, and can meet the requirement as the friction coat material in Bearing in Internal Combustion Engine.
Description
Technical field
The invention belongs to alloy powder preparing technical field, be specifically related to a kind of copper and tin bismuth alloy powder and aerosolization system thereof
Preparation Method and apply its bi-metal shaft bushing material copper alloy powder.
Background technology
Copper-radicle antifriction material not only has good antifriction performance and preferable seizure resistance, and material has good simultaneously
Heat conductivity, high-mechanic and anti-wear performance, be widely used in heavy-duty diesel engine and car high-strength engine bearing field, particularly
High metal CuPb24Sn and CuPb24Sn4.For a long time, lead, during producing, electroplating and use, causes weight to environment
Polluting greatly, this problem is increasingly paid close attention to by domestic and international sliding bearing industry, and this makes lot of domestic and international enterprise very huge fund
Study the unleaded of copper alloy.
For drawbacks described above present in currently available technology, it is necessary to study in fact, to provide a kind of scheme, solves
Defect present in prior art.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of copper and tin bismuth alloy powder and aerosolization preparation method thereof and answers
With its bi-metal shaft bushing material copper alloy powder, it is to avoid the lead-containing materials pollution to environment.
First the present invention considers that interpolation Bi, to replace Pb, prepares copper and tin bismuth alloy by melted and aerosolization in tin bronze
Powder, then with copper and tin bismuth alloy powder as matrix, adds Fe3P powder, MoSi2Powder and binding agent, obtained by mechanical mixture
Obtain bi-metal shaft bushing material copper alloy powder finally.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that:
The aerosolization preparation method of a kind of copper and tin bismuth alloy powder of the present invention, specifically comprises the steps of
S10, selecting percentage by weight is the copper of 89～91%, 5～the stannum of 7%, and 3～the raw material of bismuth of 4%, by copper
Addition smelting furnace is heated to 1085 DEG C in air atmosphere melt, after copper melts, adds Sn, Bi carry out melting shape
Becoming aluminium alloy, smelting temperature is at 1100～1120 DEG C, and smelting time is 15～20 minutes；
S20, after described aluminium alloy is carried out liquid level slagging-off, composition detection controls at Cu89～91%, Sn5～7%, Bi3～
4%, impurity≤0.3% the most maybe cannot rejected, it is warming up to 1150～1200 DEG C after composition detection is qualified；
S30, drags for clean bits, and described aluminium alloy is injected bottom pour ladle, use restraint-type circumferential weld nozzle under air with 0.7～
1.0Mpa air pressure carries out atomization and forms alloy powder；
S40, sieves described alloy powder use spin vibration sieve, it is thus achieved that the copper and tin bismuth alloy powder of-120 mesh.
Preferably, the leakage eye of bottom pour ladle bottom surface is 1, leaks eye a diameter of 3.5～5.5mm.
Preferably, restraint-type circumferential weld nozzle jet apex angle is 22～28 °.
Preferably, the seam of restraint-type circumferential weld nozzle a width of 0.5～2mm.
A kind of copper and tin bismuth alloy powder of the present invention, is prepared by method as above, copper and tin bismuth alloy powder
Apparent density be 4.9～5.4g/cm3, mobility≤30s/50g.
A kind of bi-metal shaft bushing material copper alloy powder of the present invention, including above-mentioned copper and tin bismuth alloy powder 97.9～
99.7%, Fe3P powder 0.1～0.8%, MoSi2Powder 0.1～0.8%, binding agent 0.1～0.5%, and by by above-mentioned powder
End mechanical mixture is made.Wherein, during mechanical mixture, the velocity of rotation of blender is 10-30 rev/min, and incorporation time is 15-20
Minute.
Preferably, Fe3The weight/mass percentage composition 72～76% of P powder Fe, the weight/mass percentage composition 23～25% of P, Si's
Weight/mass percentage composition≤1.5%, weight/mass percentage composition≤1.5% of Mn, weight/mass percentage composition≤0.5% of C, Fe3P powder
Particle size range is 1～20um.
Preferably, MoSi2In powder, the weight/mass percentage composition of Mo is 61.8～64.5%, and the weight/mass percentage composition of Si is
Weight/mass percentage composition≤0.5% of 35～38%, O, weight/mass percentage composition≤0.1% of C, MoSi2The particle size range of powder is
0.5～10um.
Preferably, binding agent is alcohol base class wax powder.
The present invention is used to have a following beneficial effect:
1, the copper and tin bismuth alloy powder of the present invention, reasonable mixture ratio of components, the apparent density of alloy powder is 4.9～5.4g/
cm3, mobility is≤30s/50g, and its pattern is rendered as the spheroidal of more rule, and surface texture is smooth, does not substantially have
There are pit or poroid tissue, good compactness, replace Pb by the Bi of the same clan with Pb, add embeddability and the fatigability of alloy
Energy.
2, the bi-metal shaft bushing material copper alloy powder of the present invention, its additive component is Fe3P powder and MoSi2Powder
End, both is common additive for powder metallurgy, wherein Fe3P powder can reduce sintering temperature, improves compacting efficiency, and
The not yet green strength of sintered powder, MoSi2Powder has the high-melting-point of pottery and anti-corrosion antioxygenic property, and has metal material concurrently
Material high-temp plastic, adds Fe in alloy powder3P powder and MoSi2Powder, enhances frictional behaviour, reduces friction loss.
3, the present invention uses restraint-type circumferential weld nozzle, and aluminium alloy is i.e. broken at nozzle exit, and nozzle is delivered to metal
Energy big, be conducive to improving the jacquard weave rate of alloy powder, use bi-metal shaft bushing material copper prepared by technique scheme
Alloy powder is coated with (melting) on steel matrix and applies sintering and form friction coat, and coating has good sintering character, preferably subtracts
Rub performance, higher bearing capacity and high temperature antioxygen property, can match in excellence or beauty with Kelmet, is to substitute Pot metal to realize vapour
The ideal material that car engine bearing friction coat is unleaded.
4, relative water atomization, the powder that the present invention is produced by melted-aerosolization is the most aqueous, and after atomization, directly screening can be contracted
Short production procedure.
Accompanying drawing explanation
Fig. 1 is the aerosolization preparation method flow chart of a kind of copper and tin bismuth alloy powder of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is a part of embodiment of the present invention rather than whole embodiments wholely.Based on this
Embodiment in bright, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
Embodiment 1
As it is shown in figure 1, the flow chart that Fig. 1 is a kind of copper and tin bismuth alloy powder aerosolization preparation method, specifically comprise following
Step:
S10, selecting percentage by weight is the copper of 91%, the stannum of 5%, and copper is added in smelting furnace by the raw material of the bismuth of 4%
In air atmosphere, it is heated to 1083 DEG C melt, after copper melts, adds Sn, Bi carry out melting formation aluminium alloy, melting
Temperature is at 1100 DEG C, and smelting time is 15 minutes；
S20, after aluminium alloy is carried out liquid level slagging-off, composition detection controls at Cu89～91%, Sn5～7%, Bi3～4%,
Inevitable impurity≤0.3% maybe cannot rejected, is warming up to 1200 DEG C after composition detection is qualified；
In the present embodiment, impurity includes silicon, aluminum, magnesium etc.；
S30, drags for clean bits, and aluminium alloy injects bottom pour ladle, uses restraint-type circumferential weld nozzle under air with 0.9Mpa air pressure
Carry out atomization and form alloy powder；Wherein, the leakage eye of bottom pour ladle bottom surface is 1, leaks a diameter of 4mm of eye, and restraint-type circumferential weld nozzle sprays
Penetrating drift angle is 22 °, a width of 2mm of seam of restraint-type circumferential weld nozzle；
S40, uses spin vibration sieve to sieve alloy powder, it is thus achieved that the copper and tin bismuth alloy powder of-120 mesh.
A kind of copper and tin bismuth alloy powder of the embodiment of the present invention, is prepared by method as above, and copper and tin bismuth closes
The apparent density at bronze end is 4.9g/cm3, mobility is 30s/50g.
A kind of bi-metal shaft bushing material copper alloy powder of the embodiment of the present invention includes above-mentioned copper and tin bismuth alloy powder
97.9%, Fe3P powder 0.8%, MoSi2Powder 0.8%, binding agent 0.5%, above-mentioned powder mechanical mixture is uniform, obtain
Whole bi-metal shaft bushing material copper alloy powder, wherein, during mechanical mixture, the velocity of rotation of blender is 10 revs/min, mixed
The conjunction time is 15 minutes.
Wherein, Fe3The weight/mass percentage composition 73.5% of P powder Fe, the weight/mass percentage composition 23% of P, the percent mass of Si
Content is 1.5%, and the weight/mass percentage composition of Mn is 1.5%, and the weight/mass percentage composition of C is 0.5%, Fe3The particle diameter of P powder is
10um；
In a particular embodiment, MoSi2In powder, the weight/mass percentage composition of Mo is 62%, and the weight/mass percentage composition of Si is
The weight/mass percentage composition of 37.5%, O is 0.4%, and the weight/mass percentage composition of C is 0.1%, MoSi2The particle diameter of powder is 0.5um；
Wherein, binding agent is alcohol base class wax powder.
The bi-metal shaft bushing material copper alloy powder being equipped with by above method is coated with (melting) on steel matrix and applies sintering
Forming friction coat, coating has good sintering character, preferable antifriction performance, higher bearing capacity and high temperature antioxidant
Can, can match in excellence or beauty with Kelmet, be to substitute Pot metal to realize the ideal that automobile engine bearings friction coat is unleaded
Material.
Embodiment 2
As it is shown in figure 1, the flow chart of the aerosolization preparation method that Fig. 1 is copper and tin bismuth alloy powder, specifically comprise following step
Rapid:
S10, selecting percentage by weight is the copper of 89%, the stannum of 7%, and copper is added in smelting furnace by the raw material of the bismuth of 4%
In air atmosphere, it is heated to 1085 DEG C melt, after copper melts, adds Sn, Bi carry out melting formation aluminium alloy, melting
Temperature is at 1120 DEG C, and smelting time is 20 minutes；
S20, after aluminium alloy is carried out liquid level slagging-off, composition detection controls at Cu89～91%, Sn5～7%, Bi3～4%,
Inevitable impurity≤0.3% maybe cannot rejected, is warming up to 1150 DEG C after composition detection is qualified；
In the present embodiment, impurity includes silicon, aluminum, magnesium etc.；
S30, drags for clean bits, and aluminium alloy injects bottom pour ladle, uses restraint-type circumferential weld nozzle under air with 0.7Mpa air pressure
Carry out atomization and form alloy powder；Wherein, the leakage eye of bottom pour ladle bottom surface is 1, leaks a diameter of 3.5mm of eye, restraint-type circumferential weld nozzle
Jet apex angle is 28 °, a width of 0.5mm of seam of restraint-type circumferential weld nozzle；
S40, uses spin vibration sieve to sieve alloy powder, it is thus achieved that the copper and tin bismuth alloy powder of-120 mesh.
A kind of copper and tin bismuth alloy powder of the embodiment of the present invention, is prepared by method as above, and copper and tin bismuth closes
The apparent density at bronze end is 5.4g/cm3, mobility is 20s/50g.
A kind of bi-metal shaft bushing material copper alloy powder of the embodiment of the present invention includes above-mentioned copper and tin bismuth alloy powder
99.7%, Fe3P powder 0.1%, MoSi2Powder 0.1%, binding agent 0.1%, above-mentioned powder mechanical mixture is uniform, obtain
Whole bi-metal shaft bushing material copper alloy powder, wherein, during mechanical mixture, the velocity of rotation of blender is 30 revs/min, mixed
The conjunction time is 20 minutes.
Wherein, Fe3The weight/mass percentage composition 72% of P powder Fe, the weight/mass percentage composition 25% of P, the percent mass of Si contains
Amount is 1%, and the weight/mass percentage composition of Mn is 1.5%, and the weight/mass percentage composition of C is 0.5%, Fe3The particle diameter of P powder is 1um；
In a particular embodiment, MoSi2In powder, the weight/mass percentage composition of Mo is 64.5%, the weight/mass percentage composition of Si
Being 35%, the weight/mass percentage composition of O is 0.4%, and the weight/mass percentage composition of C is 0.1%, MoSi2The particle diameter of powder is 10m；
Wherein, binding agent is alcohol base class wax powder.
The bi-metal shaft bushing material copper alloy powder being equipped with by above method, is coated with (melting) on steel matrix and applies sintering
Forming friction coat, coating has good sintering character, preferable antifriction performance, higher bearing capacity and high temperature antioxidant
Can, can match in excellence or beauty with Kelmet, be to substitute Pot metal to realize the ideal that automobile engine bearings friction coat is unleaded
Material.
Embodiment 3
As it is shown in figure 1, the flow chart of the aerosolization preparation method that Fig. 1 is copper and tin bismuth alloy powder, specifically comprise following step
Rapid:
S10, selecting percentage by weight is the copper of 89%, the stannum of 7%, and copper is added in smelting furnace by the raw material of the bismuth of 4%
In air atmosphere, it is heated to 1088 DEG C melt, after copper melts, adds Sn, Bi carry out melting formation aluminium alloy, melting
Temperature is at 1110 DEG C, and smelting time is 18 minutes；
S20, after aluminium alloy is carried out liquid level slagging-off, composition detection controls at Cu89～91%, Sn5～7%, Bi3～4%,
Inevitable impurity≤0.3% maybe cannot rejected, is warming up to 1170 DEG C after composition detection is qualified；
In the present embodiment, impurity includes silicon, aluminum, magnesium etc.；
S30, drags for clean bits, and aluminium alloy injects bottom pour ladle, uses restraint-type circumferential weld nozzle under air with 0.8Mpa air pressure
Carry out atomization and form alloy powder；Wherein, the leakage eye of bottom pour ladle bottom surface is 1, leaks a diameter of 5.5mm of eye, restraint-type circumferential weld nozzle
Jet apex angle is 25 °, a width of 1.3mm of seam of restraint-type circumferential weld nozzle；
S40, uses spin vibration sieve to sieve alloy powder, it is thus achieved that the copper and tin bismuth alloy powder of-120 mesh.
A kind of copper and tin bismuth alloy powder of the embodiment of the present invention, is prepared by method as above, and copper and tin bismuth closes
The apparent density at bronze end is 5.2g/cm3, mobility is 10s/50g.
A kind of bi-metal shaft bushing material copper alloy powder of the embodiment of the present invention includes above-mentioned copper and tin bismuth alloy powder
98.8%, Fe3P powder 0.4%, MoSi2Powder 0.5%, binding agent 0.3%, above-mentioned powder mechanical mixture is uniform, obtain
Whole bi-metal shaft bushing material copper alloy powder, wherein, during mechanical mixture, the velocity of rotation of blender is 20 revs/min, mixed
The conjunction time is 17 minutes.
Wherein, Fe3The weight/mass percentage composition 76% of P powder Fe, the weight/mass percentage composition 23% of P, the percent mass of Si contains
Amount is 0.5%, and the weight/mass percentage composition of Mn is 0.3%, and the weight/mass percentage composition of C is 0.2%, Fe3The particle diameter of P powder is
20um；
In a particular embodiment, MoSi2In powder, the weight/mass percentage composition of Mo is 61.8%, the weight/mass percentage composition of Si
Being 38%, the weight/mass percentage composition of O is 0.1%, and the weight/mass percentage composition of C is 0.08%, MoSi2The particle diameter of powder is 5m；
Wherein, binding agent is alcohol base class wax powder.
The bi-metal shaft bushing material copper alloy powder being equipped with by above method, is coated with (melting) on steel matrix and applies sintering
Forming friction coat, coating has good sintering character, preferable antifriction performance, higher bearing capacity and high temperature antioxidant
Can, can match in excellence or beauty with Kelmet, be to substitute Pot metal to realize the ideal that automobile engine bearings friction coat is unleaded
Material.
Embodiment 4
As it is shown in figure 1, the flow chart of the aerosolization preparation method that Fig. 1 is copper and tin bismuth alloy powder, specifically comprise following step
Rapid:
S10, selecting percentage by weight is the copper of 89.5%, the stannum of 6%, and copper is added melting by the raw material of the bismuth of 3.5%
Stove is heated in air atmosphere 1090 DEG C melt, after copper melts, adds Sn, Bi carry out melting formation aluminium alloy,
Smelting temperature is at 1115 DEG C, and smelting time is 16 minutes；
S20, after aluminium alloy is carried out liquid level slagging-off, composition detection controls at Cu89～91%, Sn5～7%, Bi3～4%,
Inevitable impurity≤0.3% maybe cannot rejected, is warming up to 1160 DEG C after composition detection is qualified；
In the present embodiment, impurity includes silicon, aluminum, magnesium etc.；
S30, drags for clean bits, and aluminium alloy injects bottom pour ladle, uses restraint-type circumferential weld nozzle under air with 0.75Mpa air pressure
Carry out atomization and form alloy powder；Wherein, the leakage eye of bottom pour ladle bottom surface is 1, leaks a diameter of 4.5mm of eye, restraint-type circumferential weld nozzle
Jet apex angle is 23 °, a width of 1.6mm of seam of restraint-type circumferential weld nozzle；
S40, uses spin vibration sieve to sieve alloy powder, it is thus achieved that the copper and tin bismuth alloy powder of-120 mesh.
A kind of copper and tin bismuth alloy powder of the embodiment of the present invention, is prepared by method as above, and copper and tin bismuth closes
The apparent density at bronze end is 5.1g/cm3, mobility is 15s/50g.
The bi-metal shaft bushing material copper alloy powder of the embodiment of the present invention, including above-mentioned copper and tin bismuth alloy powder
98.2%, Fe3P powder 0.8%, MoSi2Powder 0.5%, binding agent 0.5%, above-mentioned powder mechanical mixture is uniform, obtain
Whole bi-metal shaft bushing material copper alloy powder, wherein, during mechanical mixture, the velocity of rotation of blender is 15 revs/min, mixed
The conjunction time is 18 minutes.
Wherein, Fe3The weight/mass percentage composition 74% of P powder Fe, the weight/mass percentage composition 24% of P, the percent mass of Si contains
Amount is 1%, and the weight/mass percentage composition of Mn is 0.8%, and the weight/mass percentage composition of C is 0.2%, Fe3The particle diameter of P powder is 15um；
In a particular embodiment, MoSi2In powder, the weight/mass percentage composition of Mo is 63%, and the weight/mass percentage composition of Si is
The weight/mass percentage composition of 36.5%, O is 0.4%, and the weight/mass percentage composition of C is 0.1%, MoSi2The particle diameter of powder is 2m；
Wherein, binding agent is alcohol base class wax powder.
The bi-metal shaft bushing material copper alloy powder being equipped with by above method, is coated with (melting) on steel matrix and applies sintering
Forming friction coat, coating has good sintering character, preferable antifriction performance, higher bearing capacity and high temperature antioxidant
Can, can match in excellence or beauty with Kelmet, be to substitute Pot metal to realize the ideal that automobile engine bearings friction coat is unleaded
Material.
Should be appreciated that exemplary embodiment as herein described is illustrative and be not restrictive.Although retouching in conjunction with accompanying drawing
State one or more embodiments of the invention, it should be understood by one skilled in the art that without departing from appended right
In the case of requiring the spirit and scope of the present invention limited, the change of various forms and details can be made.
Claims (9)
1. the aerosolization preparation method of a copper and tin bismuth alloy powder, it is characterised in that specifically comprise the steps of
S10, selecting percentage by weight is the copper of 89～91%, 5～the stannum of 7%, 3～the raw material of bismuth of 4%, is added by copper molten
Furnace is heated in air atmosphere 1085 DEG C melt, after copper melts, adds Sn, Bi carry out melting formation alloy
Liquid, smelting temperature is at 1100～1120 DEG C, and smelting time is 15～20 minutes；
S20, after described aluminium alloy is carried out liquid level slagging-off, composition detection controls at Cu89～91%, Sn5～7%, Bi3～4%,
Inevitable impurity≤0.3% maybe cannot rejected, is warming up to 1150～1200 DEG C after composition detection is qualified；
S30, drags for clean bits, and described aluminium alloy is injected bottom pour ladle, uses restraint-type circumferential weld nozzle under air with 0.7～1.0Mpa
Air pressure carries out atomization and forms alloy powder；
S40, sieves described alloy powder use spin vibration sieve, it is thus achieved that the copper and tin bismuth alloy powder of-120 mesh.
The aerosolization preparation method of copper and tin bismuth alloy powder the most according to claim 1, it is characterised in that at the bottom of described bottom pour ladle
The leakage eye in face is 1, described leakage eye a diameter of 3.5～5.5mm.
The aerosolization preparation method of copper and tin bismuth alloy powder the most according to claim 1 and 2, it is characterised in that described limit
Standard circumferential weld nozzle jet apex angle is 22～28 °.
The aerosolization preparation method of copper and tin bismuth alloy powder the most according to claim 3, it is characterised in that described restraint-type
The seam a width of 0.5～2mm of circumferential weld nozzle.
5. a copper and tin bismuth alloy powder, it is characterised in that prepared by the arbitrary described method of Claims 1-4, institute
The apparent density stating copper and tin bismuth alloy powder is 4.9～5.4g/cm3, mobility≤30s/50g.
6. a bi-metal shaft bushing material copper alloy powder, it is characterised in that include the copper and tin bismuth alloy described in claim 5
Powder 97.9～99.7%, Fe3P powder 0.1～0.8%, MoSi2Powder 0.1～0.8%, binding agent 0.1～0.5%, and lead to
Cross and above-mentioned powder mechanical mixture is made.
Bi-metal shaft bushing material copper alloy powder the most according to claim 6, it is characterised in that described Fe3P powder Fe
Weight/mass percentage composition 72～76%, the weight/mass percentage composition 23～25% of P, weight/mass percentage composition≤1.5% of Si, the matter of Mn
Amount percentage composition≤1.5%, weight/mass percentage composition≤0.5% of C, Fe3The particle size range of P powder is 1～20um.
8. according to the bi-metal shaft bushing material copper alloy powder described in claim 6 or 7, it is characterised in that described MoSi2Powder
In end, the weight/mass percentage composition of Mo is 61.8～64.5%, and the weight/mass percentage composition of Si is 35～38%, and the percent mass of O contains
Amount≤0.5%, weight/mass percentage composition≤0.1% of C, MoSi2The particle size range of powder is 0.5～10um.
9. according to the bi-metal shaft bushing material copper alloy powder described in claim 6 or 7, it is characterised in that described binding agent
For alcohol base class wax powder.
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| CN111560537A (en) * | 2020-06-29 | 2020-08-21 | 秦皇岛市雅豪新材料科技有限公司 | Bismuth-containing superfine copper-based pre-alloy powder and preparation method and application thereof |
| CN111702667A (en) * | 2020-06-29 | 2020-09-25 | 秦皇岛市雅豪新材料科技有限公司 | Elastic diamond grinding block with 320-mesh fine metal binding agent and preparation method thereof |
| CN114341375A (en) * | 2019-10-16 | 2022-04-12 | 大丰工业株式会社 | Copper alloy sliding material |
| CN114990466A (en) * | 2022-05-25 | 2022-09-02 | 中国科学院兰州化学物理研究所 | Self-lubricating copper-steel bimetal sliding shoe for pump motor and preparation method thereof |
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| CN111702667A (en) * | 2020-06-29 | 2020-09-25 | 秦皇岛市雅豪新材料科技有限公司 | Elastic diamond grinding block with 320-mesh fine metal binding agent and preparation method thereof |
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