CN108580889A - A kind of manufacturing method of iron-based powder metallurgy parts - Google Patents
A kind of manufacturing method of iron-based powder metallurgy parts Download PDFInfo
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- CN108580889A CN108580889A CN201810614426.4A CN201810614426A CN108580889A CN 108580889 A CN108580889 A CN 108580889A CN 201810614426 A CN201810614426 A CN 201810614426A CN 108580889 A CN108580889 A CN 108580889A
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- 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
- B22F3/02—Compacting only
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- 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
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0264—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements the maximum content of each alloying element not exceeding 5%
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
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- 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
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- 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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- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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Abstract
The invention discloses a kind of manufacturing methods of iron-based powder metallurgy parts, include the following steps, prepare iron-based powder raw material, include the raw material of following parts by weight：3~5 parts of flaky graphite powder, Cr2O36~7 parts, Fe1000~1100 part, Mn15~20 part, Mo15~20 part, Ni3~5 part, nano-TiO230~50 parts, Nb6~8 part, Ga6~8 part, SiO23~6 parts, Zr3~6 part, V3~6 part, Zn3~6 part, Al2O33~6 parts, 4~7 parts of rare earth element, 4~7 parts of nano zirconium dioxide, 15~20 parts of surface conditioning agent, inert gas, hydrogen, surface conditioning agent is sprayed on the surface of part by surface treatment, and drying obtains part to be processed.The present invention is ingenious in design, and reasonable composition, manufacturing method is reasonable, is suitble to promote.
Description
Technical field
The present invention relates to metallurgy component processing technique field more particularly to a kind of manufacturers of iron-based powder metallurgy parts
Method.
Background technology
Powder metallurgy is to produce metal powder or made with metal powder (or mixture of metal powder and non-metal powder)
For raw material the technology of metal material, composite material and various types product is manufactured by shaping and being sintered.Powder smelting
Jin Fayu production ceramics have similar place, belong to sintered powder technique, therefore, a series of New Technologies In Powder Metallu Rgies also can be used
In the preparation of ceramic material.The advantages of due to PM technique, it has become the key for solving the problems, such as new material, in new material
Development in play very important effect.
Powder metallurgy includes powder processed and product.Powder wherein processed be mainly metallurgical process and it is literal coincide.And powder metallurgy system
Product are then often far beyond material and metallurgical scope, often across the technology of multidisciplinary (material and metallurgy, machinery and mechanics etc.).
Especially contemporary metal powder 3D printing, collection mechanical engineering, CAD, reverse Engineering Technology, Layered Manufacturing Technology, Numeric Control Technology, material
Science, laser technology are so that sintered metal product technology becomes across more multi-disciplinary modern complex art.
Powder metallurgy has unique chemical composition and machinery, physical property, and these performances are with traditional founding side
What method can not obtain.It can be directly prepared into porous, half fine and close or full dense material and product, such as oil-containing with PM technique
Bearing, gear, cam, guide rod, cutter etc. are a kind of few without Cutting Process.
Existing part is not wear-resisting, is easy to be scratched after long-time use, intensity is not high, not corrosion-resistant, for this purpose, of the invention
It is proposed a kind of manufacturing method of iron-based powder metallurgy parts.
Invention content
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of ferrous based powder metallurgical zero proposed
The manufacturing method of part.
To achieve the goals above, present invention employs following technical solutions：
A kind of manufacturing method of iron-based powder metallurgy parts, includes the following steps,
S1 prepares iron-based powder raw material, includes the raw material of following parts by weight：3~5 parts of flaky graphite powder, Cr2O36~7
Part, 1000~1100 parts of Fe, 15~20 parts of Mn, 15~20 parts of Mo, 3~5 parts of Ni, nano-TiO230~50 parts, Nb 6~
8 parts, 6~8 parts of Ga, SiO23~6 parts, 3~6 parts of Zr, 3~6 parts of V, 3~6 parts of Zn, Al2O33~6 parts, rare earth element 4
~7 parts, 4~7 parts of nano zirconium dioxide, 15~20 parts of surface conditioning agent, inert gas, hydrogen；
S2 prepares process equipment, including following equipment：Grinder, batch mixer, mold and its former, ooze sintering furnace
Carbon stove, tempering furnace, digital lathe and packaging facilities；
S3, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide are respectively put into grinder, are fully crushed, and it is former to respectively obtain respective iron-based powder
Material；
S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide powder raw material are fitted into mixing machine, are 50~60 DEG C in temperature, with 300~500r/min's
Rotating speed is stirred, and obtains mixed-powder raw material A；
Mixed-powder raw material A is put into component die by S5, using former by mixed-powder raw material A 620~
Compression moulding under 640Mpa pressure；
The green compact of S6, compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and inject hydrogen, first
It it is 1010~1060 DEG C in temperature, sintering time is 15~25 minutes, is then increased the temperature to the speed of 5~10 DEG C/min
It 1140~1210 DEG C, at this temperature, re-sinters 15~25 minutes, then cools down to room temperature；
The green compact of S7, heat treatment, thermal sintering first carry out normalized treatment in normalizing furnace, and 2~4 are kept the temperature at 835~855 DEG C
Hour or so；Quenching treatment is carried out after taking-up again, is sent into heat-treatment furnace and is heated to 670~720 DEG C, and keep the temperature 2~4 hours；
Then, it is cooled down with quenching oil, quenched part is sent into tempering furnace and is heated to carry out at high tempering at 500~520 DEG C
Reason keeps the temperature 1.5~2 hours, then lonneal is carried out at 155~165 DEG C, keeps the temperature 2~3 hours；
S8, carburizing, the gear after lonneal are heated to 905~955 in carburizer in gaseous carburizing medium
DEG C, isothermal holding 1~3 hour is cooled to 100 DEG C, keeps the temperature 12~15 hours, is then cooled to room temperature；
Surface conditioning agent is sprayed on the surface of part by S9, surface treatment, and drying obtains part to be processed；
S10 carries out cutting polishing using digital lathe to part to be processed, obtains the part for wanting shape size；
S11, packaging carry out packing processes using packaging facilities to the part processed.
Preferably, the rare earth element is at least one of selected from cerium, neodymium, terbium, yttrium and scandium, preferably in cerium and neodymium extremely
Few one kind.
Preferably, the surface conditioning agent includes antirust agent and wear-resistant paint, and the weight ratio of antirust agent and wear-resistant paint
It is 1：1.
Preferably, in the S1, prepare iron-based powder raw material, include the raw material of following parts by weight：Flaky graphite powder 4
Part, Cr2O36.5 parts, 1050 parts of Fe, 17 parts of Mn, 17 parts of Mo, 4 parts of Ni, nano-TiO240 parts, 7 parts of Nb, 7 parts of Ga,
SiO24.5 parts, 4.5 parts of Zr, 4.5 parts of V, 4 parts of Zn, Al2O35 parts, 5 parts of rare earth element, 5 parts of nano zirconium dioxide, surface
17 parts of inorganic agent.
Preferably, in the S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、
Zr、V、Zn、Al2O3, rare earth element, nano zirconium dioxide powder raw material are fitted into mixing machine, be 55 DEG C in temperature, with 400r/
The rotating speed of min is stirred, and obtains mixed-powder raw material A.
Preferably, in the S5, mixed-powder raw material A is put into component die, using former by mixed-powder
Raw material A compression moulding under 630Mpa pressure
Preferably, in the S6, the green compact of compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and
Hydrogen is injected, is first 1035 DEG C in temperature, sintering time is 20 minutes, is then increased the temperature to the speed of 7.5 DEG C/min
It 1175 DEG C, at this temperature, re-sinters 20 minutes, then cools down to room temperature.
Preferably, in the S8, carburizing, the gear after lonneal in carburizer, in gaseous carburizing medium plus
For heat to 930 DEG C, isothermal holding 2 hours is cooled to 100 DEG C, keeps the temperature 13.5 hours, is then cooled to room temperature.
A kind of manufacturing method of iron-based powder metallurgy parts proposed by the present invention, molybdenum is with elevated temperature strength is good, hardness is high, close
The characteristics such as degree is big, resistance to corrosion is strong, coefficient of thermal expansion is small, good conductive and heat conduction.The simple metal of molybdenum is silvery white, very
It is hard.Among a small amount of molybdenum is added to steel, steel can be made to be hardened, the addition of Mo makes part more resistant to friction, and service life is stronger；S9, table
Surface conditioning agent, is sprayed on the surface of part by surface treatment, and drying obtains part to be processed, can increase wearability and anti-corrosion
Corrosion；The addition of nano zirconium dioxide can improve the rub resistance of part, nano-TiO2Addition, improve the intensity of part, this
Skillful in design, reasonable composition, manufacturing method is reasonable, is suitble to promote.
Specific implementation mode
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one
A kind of manufacturing method of iron-based powder metallurgy parts proposed by the present invention, includes the following steps,
S1 prepares iron-based powder raw material, includes the raw material of following parts by weight：4 parts of flaky graphite powder, Cr2O36.5 parts,
1050 parts of Fe, 17 parts of Mn, 17 parts of Mo, 4 parts of Ni, nano-TiO240 parts, 7 parts of Nb, 7 parts of Ga, SiO24.5 parts, Zr 4.5
Part, 4.5 parts of V, 4 parts of Zn, Al2O35 parts, 5 parts of rare earth element, 5 parts of nano zirconium dioxide, 17 parts of surface conditioning agent, indifferent gas
Body, hydrogen；
S2 prepares process equipment, including following equipment：Grinder, batch mixer, mold and its former, ooze sintering furnace
Carbon stove, tempering furnace, digital lathe and packaging facilities；
S3, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide are respectively put into grinder, are fully crushed, and it is former to respectively obtain respective iron-based powder
Material；
S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide powder raw material are fitted into mixing machine, are 50 DEG C in temperature, mixed with the rotating speed stirring of 300r/min
It closes, obtains mixed-powder raw material A；
Mixed-powder raw material A is put into component die by S5, using former by mixed-powder raw material A in 620Mpa
Compression moulding under pressure；
The green compact of S6, compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and inject hydrogen, first
It it is 1010 DEG C in temperature, sintering time is 15 minutes, then 1140 DEG C is increased the temperature to the speed of 5 DEG C/min, in this temperature
Under, it re-sinters 15 minutes, then cools down to room temperature；
The green compact of S7, heat treatment, thermal sintering first carry out normalized treatment in normalizing furnace, and 3 hours left sides are kept the temperature at 840 DEG C
It is right；Quenching treatment is carried out after taking-up again, is sent into heat-treatment furnace and is heated to 680 DEG C, and keep the temperature 3 hours；Then, with quenching oil cooling
But, quenched part is sent into tempering furnace and is heated to carry out high tempering processing at 510 DEG C, keep the temperature 1.7 hours, then
160 DEG C of progress lonneals, keep the temperature 2.5 hours；
S8, carburizing, the gear after lonneal are heated to 905 DEG C, heat preservation in carburizer in gaseous carburizing medium
Processing 1 hour is cooled to 100 DEG C, keeps the temperature 12 hours, is then cooled to room temperature；
Surface conditioning agent is sprayed on the surface of part by S9, surface treatment, and drying obtains part to be processed；
S10 carries out cutting polishing using digital lathe to part to be processed, obtains the part for wanting shape size；
S11, packaging carry out packing processes using packaging facilities to the part processed.
Embodiment two
A kind of manufacturing method of iron-based powder metallurgy parts proposed by the present invention, includes the following steps,
S1 prepares iron-based powder raw material, includes the raw material of following parts by weight：4 parts of flaky graphite powder, Cr2O36.5 parts,
1050 parts of Fe, 17 parts of Mn, 17 parts of Mo, 4 parts of Ni, nano-TiO240 parts, 7 parts of Nb, 7 parts of Ga, SiO24.5 parts, Zr 4.5
Part, 4.5 parts of V, 4 parts of Zn, Al2O35 parts, 5 parts of rare earth element, 5 parts of nano zirconium dioxide, 17 parts of surface conditioning agent, indifferent gas
Body, hydrogen；
S2 prepares process equipment, including following equipment：Grinder, batch mixer, mold and its former, ooze sintering furnace
Carbon stove, tempering furnace, digital lathe and packaging facilities；
S3, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide are respectively put into grinder, are fully crushed, and it is former to respectively obtain respective iron-based powder
Material；
S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide powder raw material are fitted into mixing machine, are 53 DEG C in temperature, mixed with the rotating speed stirring of 350r/min
It closes, obtains mixed-powder raw material A；
Mixed-powder raw material A is put into component die by S5, using former by mixed-powder raw material A in 625Mpa
Compression moulding under pressure；
The green compact of S6, compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and inject hydrogen, first
It it is 1020 DEG C in temperature, sintering time is 16 minutes, then 1160 DEG C is increased the temperature to the speed of 6 DEG C/min, in this temperature
Under, it re-sinters 17 minutes, then cools down to room temperature；
The green compact of S7, heat treatment, thermal sintering first carry out normalized treatment in normalizing furnace, and 3 hours left sides are kept the temperature at 840 DEG C
It is right；Quenching treatment is carried out after taking-up again, is sent into heat-treatment furnace and is heated to 680 DEG C, and keep the temperature 3 hours；Then, with quenching oil cooling
But, quenched part is sent into tempering furnace and is heated to carry out high tempering processing at 510 DEG C, keep the temperature 1.7 hours, then
160 DEG C of progress lonneals, keep the temperature 2.5 hours；
S8, carburizing, the gear after lonneal are heated to 915 DEG C, heat preservation in carburizer in gaseous carburizing medium
Processing 1.3 hours is cooled to 100 DEG C, keeps the temperature 13 hours, is then cooled to room temperature；
Surface conditioning agent is sprayed on the surface of part by S9, surface treatment, and drying obtains part to be processed；
S10 carries out cutting polishing using digital lathe to part to be processed, obtains the part for wanting shape size；
S11, packaging carry out packing processes using packaging facilities to the part processed.
Embodiment three
A kind of manufacturing method of iron-based powder metallurgy parts proposed by the present invention, includes the following steps,
S1 prepares iron-based powder raw material, includes the raw material of following parts by weight：4 parts of flaky graphite powder, Cr2O36.5 parts,
1050 parts of Fe, 17 parts of Mn, 17 parts of Mo, 4 parts of Ni, nano-TiO240 parts, 7 parts of Nb, 7 parts of Ga, SiO24.5 parts, Zr 4.5
Part, 4.5 parts of V, 4 parts of Zn, Al2O35 parts, 5 parts of rare earth element, 5 parts of nano zirconium dioxide, 17 parts of surface conditioning agent, indifferent gas
Body, hydrogen；
S2 prepares process equipment, including following equipment：Grinder, batch mixer, mold and its former, ooze sintering furnace
Carbon stove, tempering furnace, digital lathe and packaging facilities；
S3, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide are respectively put into grinder, are fully crushed, and it is former to respectively obtain respective iron-based powder
Material；
S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide powder raw material are fitted into mixing machine, are 55 DEG C in temperature, mixed with the rotating speed stirring of 400r/min
It closes, obtains mixed-powder raw material A；
Mixed-powder raw material A is put into component die by S5, using former by mixed-powder raw material A in 630Mpa
Compression moulding under pressure；
The green compact of S6, compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and inject hydrogen, first
It it is 1035 DEG C in temperature, sintering time is 20 minutes, then increases the temperature to 1180 DEG C with the speed of 7.5 DEG C/min, warm herein
Under degree, re-sinters 20 minutes, then cool down to room temperature；
The green compact of S7, heat treatment, thermal sintering first carry out normalized treatment in normalizing furnace, and 3 hours left sides are kept the temperature at 840 DEG C
It is right；Quenching treatment is carried out after taking-up again, is sent into heat-treatment furnace and is heated to 680 DEG C, and keep the temperature 3 hours；Then, with quenching oil cooling
But, quenched part is sent into tempering furnace and is heated to carry out high tempering processing at 510 DEG C, keep the temperature 1.7 hours, then
160 DEG C of progress lonneals, keep the temperature 2.5 hours；
S8, carburizing, the gear after lonneal are heated to 930 DEG C, heat preservation in carburizer in gaseous carburizing medium
Processing 2 hours is cooled to 100 DEG C, keeps the temperature 13.5 hours, is then cooled to room temperature；
Surface conditioning agent is sprayed on the surface of part by S9, surface treatment, and drying obtains part to be processed；
S10 carries out cutting polishing using digital lathe to part to be processed, obtains the part for wanting shape size；
S11, packaging carry out packing processes using packaging facilities to the part processed.
Example IV
A kind of manufacturing method of iron-based powder metallurgy parts proposed by the present invention, includes the following steps,
S1 prepares iron-based powder raw material, includes the raw material of following parts by weight：4 parts of flaky graphite powder, Cr2O36.5 parts,
1050 parts of Fe, 17 parts of Mn, 17 parts of Mo, 4 parts of Ni, nano-TiO240 parts, 7 parts of Nb, 7 parts of Ga, SiO24.5 parts, Zr 4.5
Part, 4.5 parts of V, 4 parts of Zn, Al2O35 parts, 5 parts of rare earth element, 5 parts of nano zirconium dioxide, 17 parts of surface conditioning agent, indifferent gas
Body, hydrogen；
S2 prepares process equipment, including following equipment：Grinder, batch mixer, mold and its former, ooze sintering furnace
Carbon stove, tempering furnace, digital lathe and packaging facilities；
S3, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide are respectively put into grinder, are fully crushed, and it is former to respectively obtain respective iron-based powder
Material；
S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide powder raw material are fitted into mixing machine, are 57 DEG C in temperature, mixed with the rotating speed stirring of 450r/min
It closes, obtains mixed-powder raw material A；
Mixed-powder raw material A is put into component die by S5, using former by mixed-powder raw material A in 635Mpa
Compression moulding under pressure；
The green compact of S6, compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and inject hydrogen, first
It it is 1050 DEG C in temperature, sintering time is 22 minutes, then 1190 DEG C is increased the temperature to the speed of 8 DEG C/min, in this temperature
Under, it re-sinters 22 minutes, then cools down to room temperature；
The green compact of S7, heat treatment, thermal sintering first carry out normalized treatment in normalizing furnace, and 3 hours left sides are kept the temperature at 840 DEG C
It is right；Quenching treatment is carried out after taking-up again, is sent into heat-treatment furnace and is heated to 680 DEG C, and keep the temperature 3 hours；Then, with quenching oil cooling
But, quenched part is sent into tempering furnace and is heated to carry out high tempering processing at 510 DEG C, keep the temperature 1.7 hours, then
160 DEG C of progress lonneals, keep the temperature 2.5 hours；
S8, carburizing, the gear after lonneal are heated to 945 DEG C, heat preservation in carburizer in gaseous carburizing medium
Processing 2.2 hours is cooled to 100 DEG C, keeps the temperature 14 hours, is then cooled to room temperature；
Surface conditioning agent is sprayed on the surface of part by S9, surface treatment, and drying obtains part to be processed；
S10 carries out cutting polishing using digital lathe to part to be processed, obtains the part for wanting shape size；
S11, packaging carry out packing processes using packaging facilities to the part processed.
Embodiment five
A kind of manufacturing method of iron-based powder metallurgy parts proposed by the present invention, includes the following steps,
S1 prepares iron-based powder raw material, includes the raw material of following parts by weight：4 parts of flaky graphite powder, Cr2O36.5 parts,
1050 parts of Fe, 17 parts of Mn, 17 parts of Mo, 4 parts of Ni, nano-TiO240 parts, 7 parts of Nb, 7 parts of Ga, SiO24.5 parts, Zr 4.5
Part, 4.5 parts of V, 4 parts of Zn, Al2O35 parts, 5 parts of rare earth element, 5 parts of nano zirconium dioxide, 17 parts of surface conditioning agent, indifferent gas
Body, hydrogen；
S2 prepares process equipment, including following equipment：Grinder, batch mixer, mold and its former, ooze sintering furnace
Carbon stove, tempering furnace, digital lathe and packaging facilities；
S3, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide are respectively put into grinder, are fully crushed, and it is former to respectively obtain respective iron-based powder
Material；
S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3、
Rare earth element, nano zirconium dioxide powder raw material are fitted into mixing machine, are 60 DEG C in temperature, mixed with the rotating speed stirring of 500r/min
It closes, obtains mixed-powder raw material A；
Mixed-powder raw material A is put into component die by S5, using former by mixed-powder raw material A in 640Mpa
Compression moulding under pressure；
The green compact of S6, compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and inject hydrogen, first
It it is 1060 DEG C in temperature, sintering time is 25 minutes, then 1210 DEG C is increased the temperature to the speed of 10 DEG C/min, in this temperature
Under, it re-sinters 25 minutes, then cools down to room temperature；
The green compact of S7, heat treatment, thermal sintering first carry out normalized treatment in normalizing furnace, and 3 hours left sides are kept the temperature at 840 DEG C
It is right；Quenching treatment is carried out after taking-up again, is sent into heat-treatment furnace and is heated to 680 DEG C, and keep the temperature 3 hours；Then, with quenching oil cooling
But, quenched part is sent into tempering furnace and is heated to carry out high tempering processing at 510 DEG C, keep the temperature 1.7 hours, then
160 DEG C of progress lonneals, keep the temperature 2.5 hours；
S8, carburizing, the gear after lonneal are heated to 955 DEG C, heat preservation in carburizer in gaseous carburizing medium
Processing 3 hours is cooled to 100 DEG C, keeps the temperature 15 hours, is then cooled to room temperature；
Surface conditioning agent is sprayed on the surface of part by S9, surface treatment, and drying obtains part to be processed；
S10 carries out cutting polishing using digital lathe to part to be processed, obtains the part for wanting shape size；
S11, packaging carry out packing processes using packaging facilities to the part processed.
Hardness is carried out to part prepared by above-described embodiment one~five respectively, impact flexibility and wearability are detected, and
It is compared with part in the market, testing result is as follows：
A kind of manufacturing method of iron-based powder metallurgy parts proposed by the present invention, molybdenum is with elevated temperature strength is good, hardness is high, close
The characteristics such as degree is big, resistance to corrosion is strong, coefficient of thermal expansion is small, good conductive and heat conduction.The simple metal of molybdenum is silvery white, very
It is hard.Among a small amount of molybdenum is added to steel, steel can be made to be hardened, the addition of Mo makes part more resistant to friction, and service life is stronger；S9, table
Surface conditioning agent, is sprayed on the surface of part by surface treatment, and drying obtains part to be processed, can increase wearability and anti-corrosion
Corrosion；The addition of nano zirconium dioxide can improve the rub resistance of part, and the addition of nano TiO 2 improves the intensity of part, this
Skillful in design, reasonable composition, manufacturing method is reasonable, is suitble to promote.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. a kind of manufacturing method of iron-based powder metallurgy parts, which is characterized in that include the following steps,
S1 prepares iron-based powder raw material, includes the raw material of following parts by weight：3~5 parts of flaky graphite powder, Cr2O36~7 parts,
1000~1100 parts of Fe, 15~20 parts of Mn, 15~20 parts of Mo, 3~5 parts of Ni, nano-TiO230~50 parts, Nb 6~8
Part, 6~8 parts of Ga, SiO23~6 parts, 3~6 parts of Zr, 3~6 parts of V, 3~6 parts of Zn, Al2O33~6 parts, rare earth element 4~
7 parts, 4~7 parts of nano zirconium dioxide, 15~20 parts of surface conditioning agent, inert gas, hydrogen；
S2 prepares process equipment, including following equipment：Grinder, batch mixer, mold and its former, sintering furnace, carburizing
Stove, tempering furnace, digital lathe and packaging facilities；
S3, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3, rare earth
Element, nano zirconium dioxide are respectively put into grinder, are fully crushed, and respective iron-based powder raw material is respectively obtained；
S4, by flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3, rare earth
Element, nano zirconium dioxide powder raw material are fitted into mixing machine, are 50~60 DEG C in temperature, with the rotating speed of 300~500r/min
It is stirred, obtains mixed-powder raw material A；
Mixed-powder raw material A is put into component die by S5, using former by mixed-powder raw material A in 620~640Mpa
Compression moulding under pressure；
The green compact of S6, compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and hydrogen are injected, first in temperature
Degree is 1010~1060 DEG C, and sintering time is 15~25 minutes, then 1140 are increased the temperature to the speed of 5~10 DEG C/min~
It 1210 DEG C, at this temperature, re-sinters 15~25 minutes, then cools down to room temperature；
The green compact of S7, heat treatment, thermal sintering first carry out normalized treatment in normalizing furnace, and 2~4 hours are kept the temperature at 835~855 DEG C
Left and right；Quenching treatment is carried out after taking-up again, is sent into heat-treatment furnace and is heated to 670~720 DEG C, and keep the temperature 2~4 hours；Then,
It is cooled down with quenching oil, quenched part is sent into tempering furnace and is heated to carry out high tempering processing at 500~520 DEG C, is protected
Temperature 1.5~2 hours, then lonneal is carried out at 155~165 DEG C, keep the temperature 2~3 hours；
S8, carburizing, the gear after lonneal are heated to 905~955 DEG C in carburizer in gaseous carburizing medium, protect
Temperature processing 1~3 hour, is cooled to 100 DEG C, keeps the temperature 12~15 hours, is then cooled to room temperature；
Surface conditioning agent is sprayed on the surface of part by S9, surface treatment, and drying obtains part to be processed；
S10 carries out cutting polishing using digital lathe to part to be processed, obtains the part for wanting shape size；
S11, packaging carry out packing processes using packaging facilities to the part processed.
2. a kind of manufacturing method of iron-based powder metallurgy parts according to claim 1, which is characterized in that the rare earth member
Element is at least one of selected from cerium, neodymium, terbium, yttrium and scandium, preferably at least one of cerium and neodymium.
3. a kind of manufacturing method of iron-based powder metallurgy parts according to claim 1, which is characterized in that at the surface
Reason agent includes antirust agent and wear-resistant paint, and the weight ratio of antirust agent and wear-resistant paint is 1：1.
4. a kind of manufacturing method of iron-based powder metallurgy parts according to claim 1, which is characterized in that in the S1,
Prepare iron-based powder raw material, includes the raw material of following parts by weight：4 parts of flaky graphite powder, Cr2O36.5 parts, 1050 parts of Fe, Mn
17 parts, 17 parts of Mo, 4 parts of Ni, nano-TiO240 parts, 7 parts of Nb, 7 parts of Ga, SiO24.5 parts, 4.5 parts of Zr, 4.5 parts of V, Zn
4 parts, Al2O35 parts, 5 parts of rare earth element, 5 parts of nano zirconium dioxide, 17 parts of surface conditioning agent.
5. a kind of manufacturing method of iron-based powder metallurgy parts according to claim 1, which is characterized in that in the S4,
By flaky graphite powder, Cr2O3, Fe, Mn, Mo, Ni, nano-TiO2、Nb、Ga、SiO2、Zr、V、Zn、Al2O3, rare earth element, receive
Rice Zirconium dioxide powder raw material is fitted into mixing machine, is 55 DEG C in temperature, is stirred, is mixed with the rotating speed of 400r/min
Powder raw material A.
6. a kind of manufacturing method of iron-based powder metallurgy parts according to claim 1, which is characterized in that in the S5,
Mixed-powder raw material A is put into component die, is pressed under 630Mpa pressure mixed-powder raw material A using former
Shape.
7. a kind of manufacturing method of iron-based powder metallurgy parts according to claim 1, which is characterized in that in the S6,
The green compact of compression moulding are placed in sintering furnace, in the protective atmosphere of inert gas, and inject hydrogen, are first 1035 in temperature
DEG C, sintering time is 20 minutes, then increases the temperature to 1175 DEG C with the speed of 7.5 DEG C/min, at this temperature, re-sinters 20
Minute, then cool down to room temperature.
8. a kind of manufacturing method of iron-based powder metallurgy parts according to claim 1, which is characterized in that in the S8,
Carburizing, the gear after lonneal are heated to 930 DEG C in carburizer in gaseous carburizing medium, isothermal holding 2 hours,
100 DEG C are cooled to, 13.5 hours is kept the temperature, is then cooled to room temperature.
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