CN105772711B - The surface treatment method of sintering titanium valve and titanium alloy powder - Google Patents
The surface treatment method of sintering titanium valve and titanium alloy powder Download PDFInfo
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- CN105772711B CN105772711B CN201610268341.6A CN201610268341A CN105772711B CN 105772711 B CN105772711 B CN 105772711B CN 201610268341 A CN201610268341 A CN 201610268341A CN 105772711 B CN105772711 B CN 105772711B
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- titanium
- titanium alloy
- alloy powder
- sintering
- surface treatment
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Classifications
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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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
Abstract
The invention belongs to field of material surface treatment, and in particular to a kind of surface treatment method of sintering titanium valve and titanium alloy powder.The present invention uses ultrasonic activation titanium valve and titanium alloy powder, add stearic acid, odium stearate, aluminum stearate or atoleine, it is uniformly mixed with titanium valve, titanium alloy powder, improve the mobility of powder, the compressibility of titanium valve and titanium alloy powder is added, reduces sintering difficulty, effectively increases titanium alloy sintered part performance, sintered part consistency reaches as high as 98.5%, substantially reduces sintering cost.
Description
Technical field
The invention belongs to field of material surface treatment, and in particular at a kind of surface of sintering titanium valve and titanium alloy powder
Reason method.
Background technology
Titanium or titanium alloy is as a kind of high-quality light metal structural material and functional material, specific strength, ratio small with density
Fracture toughness is high, and fatigue strength and resistance to crack extension ability are good, and biocompatibility is good, anti-oxidant, and low-temperature good toughness is against corrosion
Excellent performance, nonmagnetic, nontoxic, the advantages that resistance damping properties are strong, and heat resistance is good, and pumping property is good, in aerospace, boat
It is widely applied in terms of the fields such as sea, oil, chemical industry, metallurgy, automobile, power generation, biological medicine.But due to its fusing point and
Hardness is high, and melting is difficult, and machinability is poor, and manufacture is of high cost, limits its commercial Application, particularly on complex parts,
At present using the powder injection-molded appropriate process for becoming production titanium or titanium alloy complex parts, still, titanium or titanium alloy casting
Occur that poor feeding capacity, component segregation, nonuniform organization and performance are unstable when making, high temperature pole high plus chemism
It is oxidizable, it is necessary to special installation and increase cost, especially in sintering process, but temperature rise oxide-film can thicken, increase burn
Difficulty is tied, reduces sintered part performance.
The content of the invention
First problem to be solved by this invention is to provide a kind of surface treatment method of sintering titanium valve, used
Technical solution is：After titanium valve ultrasound is removed the oxide-film on its surface, add cladding protection materials and be uniformly mixed with titanium valve；It is described
The addition for coating protection materials is the 0.2~1% of titanium valve quality；The cladding protection materials are stearic acid, odium stearate, hard
Resin acid aluminium or atoleine.
Wherein, in the surface treatment method of above-mentioned sintering titanium valve, the granularity of the titanium valve is 25~40 μm, with quality hundred
Divide than meter, its component is Ti >=99.6%, Fe≤0.04%, O≤0.38%.
Wherein, in the surface treatment method of above-mentioned sintering titanium valve, the ultrasonic time is 6~10min, and power is
600~4000W, frequency are 40~2000kHz.
Second technical problem to be solved by this invention is to provide a kind of surface treatment side of sintering titanium alloy powder
Method, used technical solution are：By titanium alloy powder ultrasound remove its surface oxide-film after, add cladding protection materials with
Titanium alloy powder is uniformly mixed；The addition of the cladding protection materials is the 0.2~1% of titanium alloy powder quality；The bag
It is stearic acid, odium stearate, aluminum stearate or atoleine to cover protection materials.
Preferably, in the surface treatment method of above-mentioned sintering titanium alloy powder, the granularity of the titanium alloy powder is 25 μ
M, by percentage to the quality, its component is Ti 80.5%, Cu 12%, Al 7.5%.
Preferably, in the surface treatment method of above-mentioned sintering titanium alloy powder, the granularity of the titanium alloy powder is 30 μ
M, by percentage to the quality, its component is Ti 86%, Cu 6%, Al 8%.
Wherein, in the surface treatment method of above-mentioned sintering titanium alloy powder, the ultrasonic time is 6~10min, work(
Rate is 600~4000W, and frequency is 40~2000kHz.
The beneficial effects of the invention are as follows：
The method of the present invention improves the mobility of titanium valve and titanium alloy powder, adds the compressibility of powder, so as to carry
Mass energy density during high powder forming, reduces sintering difficulty, then reduces sintering cost, and improve titanium alloy sintered part
Can, sintered part consistency reaches as high as 98.5%.
Embodiment
The present invention provides a kind of surface treatment method of sintering titanium valve, by titanium valve 6~10min of ultrasound, its table is removed
After the oxide-film in face, add cladding protection materials and be uniformly mixed with titanium valve；The addition of the cladding protection materials is titanium valve matter
The 0.2~1% of amount；The cladding protection materials are stearic acid, odium stearate, aluminum stearate or atoleine, the ultrasound
Power be 600~4000W, supersonic frequency is 40~2000kHz.
Wherein, in the surface treatment method of above-mentioned sintering titanium valve, the granularity of the titanium valve is 25~40 μm, with quality hundred
Divide than meter, its component is Ti >=99.6%, Fe≤0.04%, O≤0.38%.
Present invention also offers a kind of surface treatment method of sintering titanium alloy powder, by titanium alloy powder ultrasound 6~
10min, after the oxide-film for removing its surface, adds cladding protection materials and is uniformly mixed with titanium alloy powder；The cladding protection
The addition of material is the 0.2~1% of titanium alloy powder quality；The cladding protection materials are stearic acid, odium stearate, tristearin
Sour aluminium or atoleine, the ultrasonic power are 600~4000W, and supersonic frequency is 40~2000kHz.
Wherein, the surface treatment method of above-mentioned sintering titanium alloy powder is suitable for all sintering titanium alloy powders.
Preferably, in the surface treatment method of above-mentioned sintering titanium alloy powder, the granularity of the titanium alloy powder is 25 μ
M, by percentage to the quality, its component is Ti 80.5%, Cu 12%, Al 7.5%.
Preferably, in the surface treatment method of above-mentioned sintering titanium alloy powder, the granularity of the titanium alloy powder is 30 μ
M, by percentage to the quality, its component is Ti 86%, Cu 6%, Al 8%.
Wherein, in above-mentioned surface treatment method, it is preferred to use single groove filtering type supersonic wave cleaning machine is to titanium valve and titanium alloy
Powder carries out ultrasound.
Inventor has found through experiment, using ultrasonic activation titanium valve and titanium alloy powder, powder can be made to be gone by self-friction
Except the oxide-film on its surface, ultrasonic wave for it is per second vibration more than 20kHz sound wave, ultrasonic activation produce intense impact can will
Titanium valve and the oxide-film on titanium alloy powder surface are hit.Titanium valve and titanium alloy powder can be changed by ultrasonic activation
Surface state, improves titanium valve and the Surface atomic mobility of titanium alloy powder and the diffusivity of atom, adds stearic acid, hard at this time
Matter acid sodium, aluminum stearate or atoleine can form protective film in titanium valve and titanium alloy powder surface, improve titanium valve and titanium
The mobility of alloy powder, increases the compressibility of powder, improves mass energy density during powder forming, pressure 200~
It is sintered after 300MPa compactings, after 1000~1300 DEG C of sintering, sintered part consistency is not less than 98.5%, substantially without useless
Product.
The embodiment of the present invention is further described with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described scope.
Stearic acid, odium stearate, aluminum stearate and atoleine used are commercially available technical purity in embodiment 1-4.
Embodiment 1
25 μm of titanium valves (Ti 99.6%, Fe 0.04%, O 0.38%) are added into single groove filtering type supersonic wave cleaning machine
(ultrasonic power 600W, supersonic frequency 40kHz), ultrasonic vibration 6 minutes, after shake removes oxide-film, adds stearic acid (stearic acid
Addition for titanium valve quality 1%) mix, sintered after compacting, 1250 DEG C of sintering temperature, when soaking time 2 is small, vacuum
10-4Pa, does not have the defects of pressed compact layering and sample sintering grow, sintered part consistency reaches after testing in sintering process
99.1%, sintered part density is 4.35g/cm3。
Embodiment 2
By 25 μm, it is (super that titanium 80.5%, copper 12%, 7.5% titanium alloy powder of aluminium add single groove filtering type supersonic wave cleaning machine
Acoustical power 1000W, supersonic frequency 1000kHz), ultrasonic vibration 8 minutes, after shake removes oxide-film, it is (stearic to add odium stearate
0.8%) addition of sour sodium mixes for titanium alloy powder quality, sintered after compacting, 1000 DEG C of sintering temperature, soaking time 2
Hour, vacuum 10-4Pa does not have the defects of pressed compact layering and sample sintering grow, sintered part consistency in sintering process after testing
Reach 99.2%.
Embodiment 3
By 30 μm, titanium 86%, copper 6%, 8% titanium alloy powder of aluminium add single groove filtering type supersonic wave cleaning machine (ultrasonic work(
Rate 1200W, supersonic frequency 800kHz), ultrasonic vibration 10 minutes, after shake removes oxide-film, it is (hard to add 0.5% aluminum stearate
0.5%) addition of resin acid aluminium mixes for titanium alloy powder quality, sintered after compacting, 1050 DEG C of sintering temperature, burns after testing
There is no the defects of pressed compact layering and sample sintering grow during knot, sintered part consistency reaches 99.5%.
Embodiment 4
It is (super that 40 μm of titanium valves (Ti 99.6%, Fe 0.04%, O 0.38%) are added into single groove filtering type supersonic wave cleaning machine
Acoustical power 1500W, supersonic frequency 2000kHz), ultrasonic vibration 8 minutes, after shake removes oxide-film, adds atoleine (liquid
0.7%) addition of paraffin mixes for titanium valve quality, sintered after compacting, 1250 DEG C of sintering temperature, after testing in sintering process
There is no the defects of pressed compact layering and sample sintering grow, sintered part consistency reaches 99.1%.
Comparative example 1
By 25 μm of titanium valves (Ti 99.6%, Fe 0.04%, O 0.38%), sintered after direct pressing, sintering temperature
1250 DEG C, when soaking time 2 is small, vacuum 10-4Pa.Sintered part consistency is 93.3%.
Claims (5)
1. the surface treatment method of sintering titanium valve, it is characterised in that after titanium valve ultrasound is removed the oxide-film on its surface, add
Cladding protection materials are uniformly mixed with titanium valve；The addition of the cladding protection materials is the 0.2~1% of titanium valve quality；It is described
Cladding protection materials are stearic acid, odium stearate, aluminum stearate or atoleine；The ultrasonic time is 6~10min,
Power is 600~4000W, and frequency is 40~2000kHz.
2. the surface treatment method of sintering titanium valve according to claim 1, it is characterised in that the granularity of the titanium valve is
25~40 μm, by percentage to the quality, its component is Ti >=99.6%, Fe≤0.04%, O≤0.38%.
3. the surface treatment method of sintering titanium alloy powder, it is characterised in that titanium alloy powder ultrasound is removed into its surface
After oxide-film, add cladding protection materials and be uniformly mixed with titanium alloy powder；The addition of the cladding protection materials is closed for titanium
The 0.2~1% of golden powder quality；The cladding protection materials are stearic acid, odium stearate, aluminum stearate or atoleine；
The ultrasonic time is 6~10min, and power is 600~4000W, and ultrasonic frequency is 40~2000kHz.
4. the surface treatment method of sintering titanium alloy powder according to claim 3, it is characterised in that the titanium alloy
The granularity of powder is 25 μm, and by percentage to the quality, its component is Ti 80.5%, Cu 12%, Al 7.5%.
5. the surface treatment method of sintering titanium alloy powder according to claim 3, it is characterised in that the titanium alloy
The granularity of powder is 30 μm, and by percentage to the quality, its component is Ti 86%, Cu 6%, Al 8%.
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| CN201610268341.6A CN105772711B (en) | 2016-04-27 | 2016-04-27 | The surface treatment method of sintering titanium valve and titanium alloy powder |
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| CN201610268341.6A CN105772711B (en) | 2016-04-27 | 2016-04-27 | The surface treatment method of sintering titanium valve and titanium alloy powder |
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| CN105772711A CN105772711A (en) | 2016-07-20 |
| CN105772711B true CN105772711B (en) | 2018-05-11 |
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| CN109702192B (en) * | 2019-03-07 | 2021-04-13 | 攀枝花学院 | Method for preparing parts by quickly molding metal powder |
| CN112238223A (en) * | 2019-07-18 | 2021-01-19 | 上栗县科源冶金材料有限公司 | Anti-oxidation method for storing metal powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05195007A (en) * | 1992-01-14 | 1993-08-03 | Matsushita Electric Ind Co Ltd | Surface treatment of hydrogen storage alloy for alkaline secondary battery and the same battery provided with the surface-treated alloy as electrode |
| CN2633477Y (en) * | 2003-07-10 | 2004-08-18 | 王志平 | High purity metal nano powder passive film synthetic equipment |
| CN101767198A (en) * | 2010-03-18 | 2010-07-07 | 中南大学 | Method for cladding modified lead-free solder alloy powder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6245849B1 (en) * | 1999-06-02 | 2001-06-12 | Sandia Corporation | Fabrication of ceramic microstructures from polymer compositions containing ceramic nanoparticles |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05195007A (en) * | 1992-01-14 | 1993-08-03 | Matsushita Electric Ind Co Ltd | Surface treatment of hydrogen storage alloy for alkaline secondary battery and the same battery provided with the surface-treated alloy as electrode |
| CN2633477Y (en) * | 2003-07-10 | 2004-08-18 | 王志平 | High purity metal nano powder passive film synthetic equipment |
| CN101767198A (en) * | 2010-03-18 | 2010-07-07 | 中南大学 | Method for cladding modified lead-free solder alloy powder |
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