CN106111984A - The technique preparing powdered metallurgical material - Google Patents
The technique preparing powdered metallurgical material Download PDFInfo
- Publication number
- CN106111984A CN106111984A CN201610606736.2A CN201610606736A CN106111984A CN 106111984 A CN106111984 A CN 106111984A CN 201610606736 A CN201610606736 A CN 201610606736A CN 106111984 A CN106111984 A CN 106111984A
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- Prior art keywords
- powdered metallurgical
- powder
- metallurgical material
- temperature
- technique preparing
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Classifications
-
- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0425—Copper-based alloys
-
- 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
- B22F3/10—Sintering only
-
- 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
- B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding
-
- 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
- B22F3/24—After-treatment of workpieces or articles
-
- 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
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention relates to prepare the technique of powdered metallurgical material, it includes pulverizing copper powder, nikel powder and glass putty respectively；Mix homogeneously in batch mixer, obtains alloyed powder again；Above-mentioned alloyed powder is placed in extrusion die, more extruded by extruder, obtain alloy material；Again above-mentioned alloy material is sintered, has sintered rear mould unloading, obtain cuprum-nickel-stannum powdered metallurgical material；Again above-mentioned powdered metallurgical material is carried out heat treatment.The copper powder of mix homogeneously, nikel powder and glass putty are pulverized and mixed rear by hot pressed sintering by the present invention, on the one hand can be that the alloy of preparation obtains uniform performance offer basis, on the other hand make to be tightly combined between powder；And sinter and obtain alloy and pass through Technology for Heating Processing, then it is greatly improved intensity and the hardness of powdered metallurgical material.
Description
Technical field
The present invention relates to copper-based alloy material, the technique specifically preparing powdered metallurgical material.
Background technology
Copper and copper alloy are to apply one of metal material the earliest, be widely used in machine-building, transport, build, electrically,
The industrial departments such as electronics；Wherein electric and electronic industry amount of copper consuming is relatively big, mainly for the manufacture of electric wire, communication cable etc..Copper and copper
Alloy is the most nonmagnetic, has good solderable performance, polishing performance and surface treatment properties etc..And in copper, mix nickel can show
Write and improve corrosion resistance, intensity, hardness, resistance, and reduce temperature coefficient of resistivity.
PM technique is to make through shaping and sintering with non-metal powder compound with metal dust or metal dust
Taking metal material, composite and the technology of all kinds goods, it is a kind of chipless or the processing technique of few chip, gold
Belong to utilization rate and nearly reach 100%, there is productivity ratio height, stock utilization advantages of higher.And copper based powder metallurgy material is owing to holding
Loading capability, anticorrosive and antiwear property are relatively strong, are used for preparing lock body, camera shutter mechanism, gear, cam etc..But it is existing
There is the copper-based material hardness and insufficient strength utilizing PM technique to prepare, affect the serviceability of material.
Summary of the invention
For above-mentioned technical problem, the present invention provides a kind of and prepares the powdered metallurgical material that hardness is relatively big, intensity is higher
Technique.
The technical solution used in the present invention is:
The technique preparing powdered metallurgical material, it comprises the following steps:
(1) copper powder, nikel powder and glass putty are pulverized respectively；
(2) mix homogeneously in batch mixer again, obtains alloyed powder；
(3) above-mentioned alloyed powder is placed in extrusion die, more extruded by extruder, obtain alloy material；
(4) more above-mentioned alloy material is sintered and heat treatment.
As preferably, in copper powder, nikel powder and glass putty, the content of nickel is 10wt%, and the content of stannum is 12 wt %, surplus
For copper.
As preferably, extruded carrying out in protective atmosphere, pressure is 1000 1200MPa.
As preferably, during hot pressed sintering, first sinter 20 30s with the temperature of 280 320 DEG C, then with 500 600 DEG C
Temperature sinters 40 60s, then sinters 20 30s with 650 700 DEG C of temperature.
As preferably, heat treatment uses solid solution, cold pressing deformation and Ageing Treatment successively.
As preferably, the temperature of solution treatment is 650 700 DEG C, and the time is 10 12min.
As preferably, the deflection of colding pressing of deformation process of colding pressing is 30 35%.
As preferably, the temperature of Ageing Treatment is 300 350 DEG C, and the time is 2 3h.
As can be known from the above technical solutions, lead to after the copper powder of mix homogeneously, nikel powder and glass putty are pulverized and mixed uniformly by the present invention
Cross hot pressed sintering, on the one hand can be that the alloy of preparation obtains uniform performance offer basis, on the other hand make to tie between powder
Close closely；And sinter and obtain alloy and pass through Technology for Heating Processing, then it is greatly improved intensity and the hardness of powdered metallurgical material.
Detailed description of the invention
The present invention is described more detail below, and illustrative examples and explanation in this present invention are used for explaining the present invention,
But it is not as a limitation of the invention.
The technique preparing powdered metallurgical material, it comprises the following steps:
With stannum, copper, nikel powder as raw material, and by the content of nickel be 10wt%, the content of stannum be 12 wt %, surplus be that copper is joined
Material, is then crushed to the granularity specified respectively by it；Mix homogeneously in batch mixer, obtains alloyed powder again；Then by above-mentioned conjunction
Bronze is placed in extrusion die, more extruded by extruder, obtains adonic material；In extrusion process, mould
In metal powder end in addition to the normal pressure being squeezed machine drift, also by the lateral pressure of mold wall and acting on of frictional force；
Along with the movement of drift, the powder in mould is progressively compacted, thus is extruded by mould.In order to prevent burning, extruding
Being molded under protective atmosphere and carry out, pressure uses 1000 1200MPa, so can obtain the material that consistency is higher, and performance
Being evenly distributed, productivity ratio is high；Then the adonic material hot pressed sintering to above-mentioned extruded acquisition, unloads after having sintered
Mould, obtains cuprum-nickel-stannum powdered metallurgical material；Hot pressed sintering is carried out in three stages, first sinters 20 with the temperature of 280 320 DEG C
30s, then sinters 40 60s with 500 600 DEG C of temperature, then sinters 20 30s with 650 700 DEG C of temperature；First stage belongs to
In the sintering preparatory stage, for sintering environment purification further；Second stage is along with the rising of temperature, between alloying substance granule
Initially form sintering neck, and be combined with each other, particle surface oxide generation reduction reaction, thus continue to participate in sintering, between granule
Combination enclose space each other；The sintering temperature of three phases is higher, and intergranular sintering neck is grown up further,
More granule is merged, and sintered body is shunk further, nodularization, thus intensity and the hardness of material is prepared in raising.
Above-mentioned powdered metallurgical material is carried out heat treatment；Heat treatment uses solid solution, cold pressing deformation and Ageing Treatment successively；Gu
The temperature of molten process is 650 700 DEG C, and the time is 10 12min, so can control nickel, the stannum solid solubility in Copper substrate and
Grain size；Solid solubility temperature is too high, can cause coarse grains, reduces alloy strength；Solid solubility temperature is too low, though crystal grain is less, but
Follow-up Ageing Treatment can be caused to be difficult to play the effect of reinforced alloys.As preferably, the deflection of colding pressing of deformation process of colding pressing is
30—35%；Before Ageing Treatment, alloy is carried out cold deformation, alloy can be made to present the dual effect of working hardening and ageing strengthening
Really；The temperature of Ageing Treatment is 300 350 DEG C, and the time is 2 3h；Ageing Treatment can separate out the second phase, produces dispersion-strengtherning.
Embodiment 1
By the content of nickel be 10wt%, the content of stannum be 1 wt %, surplus be that copper carries out dispensing, be then crushed to it respectively refer to
Fixed granularity, then mix homogeneously in batch mixer, obtain alloyed powder；Alloyed powder is placed in extrusion die, then passes through extruder
Use the pressure extrusion molding of 1000MPa, obtain adonic material；Then sinter 30s with the temperature of 280 DEG C, then with
500 DEG C of temperature sintering 60s, then with 650 DEG C of temperature sintering 30s；Subsequently with 650 DEG C of solution treatment 12min；Then cold pressing at deformation
Reason, deflection of colding pressing is 30%；Last with 300 DEG C of Ageing Treatment 3h, obtain cuprum-nickel-stannum powdered metallurgical material.Record this material
Hardness is 40.3HRC, and shear strength is 602.8MPa, and bulk density is 7.59g/cm3。
Embodiment 2
By the content of nickel be 10wt%, the content of stannum be 1.5 wt %, surplus be that copper carries out dispensing, then it is crushed to respectively
The granularity specified, then mix homogeneously in batch mixer, obtain alloyed powder；Alloyed powder is placed in extrusion die, then by extruding
Machine uses the pressure extrusion molding of 1100MPa, obtains adonic material；Then 25s is sintered with the temperature of 300 DEG C, then
With 560 DEG C of temperature sintering 50s, then with 680 DEG C of temperature sintering 25s；Subsequently with 680 DEG C of solution treatment 11min；Then cold pressing deformation
Processing, deflection of colding pressing is 32%；Last with 330 DEG C of Ageing Treatment 2.5h, obtain cuprum-nickel-stannum powdered metallurgical material.Record this material
The hardness of material is 49.6HRC, and shear strength is 650.6MPa, and bulk density is 8.29g/cm3。
Embodiment 3
By the content of nickel be 10wt%, the content of stannum be 2 wt %, surplus be that copper carries out dispensing, be then crushed to it respectively refer to
Fixed granularity, then mix homogeneously in batch mixer, obtain alloyed powder；Alloyed powder is placed in extrusion die, then passes through extruder
Use the pressure extrusion molding of 1200MPa, obtain adonic material；Then sinter 20s with the temperature of 320 DEG C, then with
600 DEG C of temperature sintering 40s, then with 700 DEG C of temperature sintering 20s；Subsequently with 700 DEG C of solution treatment 10min；Then cold pressing at deformation
Reason, deflection of colding pressing is 35%；Last with 350 DEG C of Ageing Treatment 2h, obtain cuprum-nickel-stannum powdered metallurgical material.Record this material
Hardness is 47.3HRC, and shear strength is 629.5MPa, and bulk density is 7.98g/cm3。
The technical scheme provided the embodiment of the present invention above is described in detail, specific case used herein
Principle and embodiment to the embodiment of the present invention are set forth, and the explanation of above example is only applicable to help to understand this
The principle of inventive embodiments；Simultaneously for one of ordinary skill in the art, according to the embodiment of the present invention, in specific embodiment party
All will change in formula and range of application, in sum, this specification content should not be construed as limitation of the present invention.
Claims (8)
1. the technique preparing powdered metallurgical material, it comprises the following steps:
(1) copper powder, nikel powder and glass putty are pulverized respectively；
(2) mix homogeneously in batch mixer again, obtains alloyed powder；
(3) above-mentioned alloyed powder is placed in extrusion die, more extruded by extruder, obtain alloy material；
(4) more above-mentioned alloy material is sintered and heat treatment.
The technique preparing powdered metallurgical material the most according to claim 1, it is characterised in that: in copper powder, nikel powder and glass putty,
The content of nickel is 10wt%, and the content of stannum is 12 wt %, and surplus is copper.
The technique preparing powdered metallurgical material the most as claimed in claim 1, it is characterised in that: extruded enter in protective atmosphere
OK, pressure is 1000 1200MPa.
The technique preparing powdered metallurgical material the most as claimed in claim 1, it is characterised in that: during hot pressed sintering, first with 280
The temperature of 320 DEG C sinters 20 30s, then sinters 40 60s with 500 600 DEG C of temperature, then with 650 700 DEG C of temperature sintering
20—30s。
The technique preparing powdered metallurgical material the most as claimed in claim 1, it is characterised in that: heat treatment uses solid solution, cold successively
Compressive strain and Ageing Treatment.
The technique preparing powdered metallurgical material the most as claimed in claim 5, it is characterised in that: the temperature of solution treatment is 650
700 DEG C, the time is 10 12min.
The technique preparing powdered metallurgical material the most as claimed in claim 5, it is characterised in that: the deformation of colding pressing of deformation process of colding pressing
Amount is 30 35%.
The technique preparing powdered metallurgical material the most as claimed in claim 5, it is characterised in that: the temperature of Ageing Treatment is 300
350 DEG C, the time is 2 3h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606736.2A CN106111984A (en) | 2016-07-29 | 2016-07-29 | The technique preparing powdered metallurgical material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610606736.2A CN106111984A (en) | 2016-07-29 | 2016-07-29 | The technique preparing powdered metallurgical material |
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| CN106111984A true CN106111984A (en) | 2016-11-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115283677A (en) * | 2022-07-27 | 2022-11-04 | 浙江迅达工业科技股份有限公司 | Preparation system and preparation method of powder metallurgy part |
| CN117127058A (en) * | 2023-05-06 | 2023-11-28 | 江西省科学院应用物理研究所 | High-strength high-hardness copper-based alloy and preparation process thereof |
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| CN117127058A (en) * | 2023-05-06 | 2023-11-28 | 江西省科学院应用物理研究所 | High-strength high-hardness copper-based alloy and preparation process thereof |
| CN117127058B (en) * | 2023-05-06 | 2024-02-09 | 江西省科学院应用物理研究所 | High-strength high-hardness copper-based alloy and preparation process thereof |
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