CN105478785A - Preparation method of engine piston through powder metallurgy - Google Patents
Preparation method of engine piston through powder metallurgy Download PDFInfo
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- CN105478785A CN105478785A CN201510826112.7A CN201510826112A CN105478785A CN 105478785 A CN105478785 A CN 105478785A CN 201510826112 A CN201510826112 A CN 201510826112A CN 105478785 A CN105478785 A CN 105478785A
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 16
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 4
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000314 lubricant Substances 0.000 claims abstract description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000008117 stearic acid Substances 0.000 claims abstract description 4
- 239000011787 zinc oxide Substances 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 6
- NFFIWVVINABMKP-UHFFFAOYSA-N methylidynetantalum Chemical compound [Ta]#C NFFIWVVINABMKP-UHFFFAOYSA-N 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229910003468 tantalcarbide Inorganic materials 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Classifications
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/02—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of piston rings
-
- B22F1/0003—
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a preparation method of an engine piston through powder metallurgy. The preparation method comprises the following process step of preparation of the following raw materials in parts by weight: 72-75 parts of iron powder, 1.2-1.5 parts of copper powder, 0.3-0.6 part of zinc oxide, 5.3-6.5 parts of stearic acid, 0.3-0.8 part of aluminum oxide, 1.4-1.8 parts of tantalum carbide, 0.4-0.6 part of silicon nitride, 1.2-1.5 parts of nickel powder, 2.2-3.4 parts of chromium powder, 0.5-0.9 part of Co, 0.3-0.5 part of graphite powder, 1.3-1.6 parts of zirconium dioxide and 1.5-1.8 parts of a lubricant. Compared with the prior art, the method disclosed by the invention has the advantages that the production technology of the powder metallurgy is simplified, the production efficiency is improved, the performance of finished products is reliable, the stability is high, the service life of products is prolonged, the production cost is reduced, and the production benefits are increased.
Description
Technical field
The present invention relates to a kind of engine piston method for preparing powder metallurgy, and this Powder metallurgy flange dish is manufactured the technique of product.
Background technology
Powder metallurgy be produce metal or with metal dust (or mixture of metal dust and non-metal powder) as raw material, through being shaped and sintering, manufacture the technology of metal material, composite and all kinds goods.Powder metallurgic method has similar place to production pottery, and therefore, a series of New Technologies In Powder Metallu Rgy also can be used for the preparation of ceramic material.Due to the advantage of PM technique, it has become the key solving new material problem, plays a part very important in the development of new material.At present, PM technique has been widely used in the fields such as traffic, machinery, electronics, Aero-Space, weapons, biology, new forms of energy, information and nuclear industry, becomes one of branch of most development vitality in new material science.PM technique possess significantly energy-conservation, economize the high and series of advantages such as good stability of material, excellent performance, Product Precision, be very suitable for producing in enormous quantities.In addition, the material that part conventional casting methods and machining process cannot be prepared and complex parts also available powders metallurgical technology manufacture, thus enjoy the attention of industrial quarters.
Usually the powder metallurgical technique adopted, environmental pollution is comparatively large, and in machinery industry, everybody also more and more advocates simplification production stage, enhances productivity.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of technique simple, cost is low, the engine piston method for preparing powder metallurgy that growth efficiency is high.
Technical scheme of the present invention is as follows:
A kind of engine piston method for preparing powder metallurgy, includes following processing step:
1), raw material prepare, be made up of the raw material of following weight portion: iron powder 72-75, copper powder 1.2-1.5, zinc oxide 0.3-0.6, stearic acid 5.3-6.5, aluminium oxide 0.3-0.8, ramet 1.4-1.8, silicon nitride 0.4-0.6, nickel powder 1.2-1.5, chromium powder 2.2-3.4, Co0.5-0.9, graphite powder 0.3-0.5, zirconium dioxide 1.3-1.6, lubricant 1.5-1.8;
2), by above-mentioned raw materials powder put into mould, material powder is at 52-58 DEG C after mixing and stirring 40-45 minute, and the blank being pressed into setting shape under the pressure of 60-65MPa is for subsequent use;
3), sintering be based on nitrogen, the ratio of hydrogen is carry out in the sintering furnace of 12 ~ 15vol%, sintering furnace temperature 900 DEG C ~ 1020 DEG C, to 940-980 DEG C of condition, 1.5-1.8 hour is sintered with 10-12 DEG C/min of ramp, be incubated 1.2-1.5 hour under being cooled to 500-540 DEG C of condition with 4-8 DEG C/min of speed again, finally pressed compact sent in 100-120 DEG C and cool 45-50 minute;
4), sintering after carry out Quenching Treatment, hardening heat is 700 ~ 750 DEG C, and be incubated 34 ~ 44 minutes, temperature is 180 ~ 220 DEG C, is incubated 25 ~ 30 minutes.
Described hardening heat is 730 DEG C, and be incubated 39 minutes, temperature is 200 DEG C, is incubated 27 minutes.
Beneficial effect of the present invention:
Compared with prior art, this method simplifies the production technology of powder metallurgy, improves production efficiency, and end properties is reliable, and stability is strong, adds the service life of product, reduces production cost, improve productivity effect.
Detailed description of the invention
Below in conjunction with specific embodiment, illustrate the present invention further, these embodiments should be understood only for illustration of the present invention
A kind of engine piston method for preparing powder metallurgy, includes following processing step:
1), raw material prepare, be made up of the raw material of following weight portion: iron powder 73.5, copper powder 1.3, zinc oxide 0.45, stearic acid 5.8 aluminium oxide 0.5, ramet 1.6, silicon nitride 0.5, nickel powder 1.35, chromium powder 2.8, Co0.7, graphite powder 0.4, zirconium dioxide 1.45, lubricant 1.65;
2), by above-mentioned raw materials powder put into mould, mixing and stirring is after 42 minutes at 55 DEG C for material powder, and the blank being pressed into setting shape under the pressure of 62MPa is for subsequent use;
3), sintering be based on nitrogen, the ratio of hydrogen is carry out in the sintering furnace of 14vol%, sintering furnace temperature 960 DEG C, to sinter 1.65 hours under 11 DEG C/min of ramp to 960 DEG C conditions, be incubated 1.35 hours under being cooled to 520 DEG C of conditions with 6 DEG C/min of speed again, finally pressed compact sent in 110 DEG C and cool 48 minutes;
4), sintering after carry out Quenching Treatment, hardening heat is 730 DEG C, and be incubated 39 minutes, temperature is 200 DEG C, is incubated 27 minutes.
Piston of the present invention is due to the quick cooled and solidified technique of specific chemical composition and powder metallurgy, the type of the MC carbide formed is (V, Nb) (C, N), make the MC carbide of precipitation more tiny, improve the toughness of piston, the hardness of more than HRC60 can be obtained after heat treatment, dissimilar application demand can be met, of many uses.Inventive piston adopts powder metallurgical technique preparation; process takes multiple effective salvo to prevent molten steel and powder from being polluted; compare tool steel prepared by general powder metallurgy; when MC carbide content is close; inventive article steel MC carbide is more tiny, has more high-strength tenacity.
Claims (2)
1. an engine piston method for preparing powder metallurgy, is characterized in that, includes following processing step:
1), raw material prepare, be made up of the raw material of following weight portion: iron powder 72-75, copper powder 1.2-1.5, zinc oxide 0.3-0.6, stearic acid 5.3-6.5, aluminium oxide 0.3-0.8, ramet 1.4-1.8, silicon nitride 0.4-0.6, nickel powder 1.2-1.5, chromium powder 2.2-3.4, Co0.5-0.9, graphite powder 0.3-0.5, zirconium dioxide 1.3-1.6, lubricant 1.5-1.8;
2), by above-mentioned raw materials powder put into mould, material powder is at 52-58 DEG C after mixing and stirring 40-45 minute, and the blank being pressed into setting shape under the pressure of 60-65MPa is for subsequent use;
3), sintering be based on nitrogen, the ratio of hydrogen is carry out in the sintering furnace of 12 ~ 15vol%, sintering furnace temperature 900 DEG C ~ 1020 DEG C, to 940-980 DEG C of condition, 1.5-1.8 hour is sintered with 10-12 DEG C/min of ramp, be incubated 1.2-1.5 hour under being cooled to 500-540 DEG C of condition with 4-8 DEG C/min of speed again, finally pressed compact sent in 100-120 DEG C and cool 45-50 minute;
4), sintering after carry out Quenching Treatment, hardening heat is 700 ~ 750 DEG C, and be incubated 34 ~ 44 minutes, temperature is 180 ~ 220 DEG C, is incubated 25 ~ 30 minutes.
2. engine cylinder head method for preparing powder metallurgy according to claim 1, is characterized in that: described hardening heat is 730 DEG C, and be incubated 39 minutes, temperature is 200 DEG C, is incubated 27 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510826112.7A CN105478785A (en) | 2015-11-25 | 2015-11-25 | Preparation method of engine piston through powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510826112.7A CN105478785A (en) | 2015-11-25 | 2015-11-25 | Preparation method of engine piston through powder metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105478785A true CN105478785A (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510826112.7A Pending CN105478785A (en) | 2015-11-25 | 2015-11-25 | Preparation method of engine piston through powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105478785A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453251A (en) * | 2018-03-15 | 2018-08-28 | 江苏中威重工机械有限公司 | A kind of motor housing metallurgical powder |
| CN113118441A (en) * | 2019-12-30 | 2021-07-16 | 吉凯恩粉末冶金(仪征)有限公司 | High-performance automobile part powder metallurgy part and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784813A (en) * | 2007-07-30 | 2010-07-21 | Gkn金属烧结控股有限责任公司 | Piston for a piston-cylinder arrangement and production method |
| CN102632219A (en) * | 2012-05-15 | 2012-08-15 | 山东滨州渤海活塞股份有限公司 | Method for casting aluminum piston of gasoline engine |
| CN103008645A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Preparation method for piston powder metallurgy material of gasoline engine |
| CN103014502A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Powdery metallurgy material for automobile engine piston and preparation method |
| CN103357861A (en) * | 2013-06-21 | 2013-10-23 | 马鞍山市恒毅机械制造有限公司 | Powder metallurgy material of gasoline engine piston and preparation method of powder metallurgy material |
-
2015
- 2015-11-25 CN CN201510826112.7A patent/CN105478785A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784813A (en) * | 2007-07-30 | 2010-07-21 | Gkn金属烧结控股有限责任公司 | Piston for a piston-cylinder arrangement and production method |
| CN102632219A (en) * | 2012-05-15 | 2012-08-15 | 山东滨州渤海活塞股份有限公司 | Method for casting aluminum piston of gasoline engine |
| CN103008645A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Preparation method for piston powder metallurgy material of gasoline engine |
| CN103014502A (en) * | 2012-11-22 | 2013-04-03 | 宁波市群星粉末冶金有限公司 | Powdery metallurgy material for automobile engine piston and preparation method |
| CN103357861A (en) * | 2013-06-21 | 2013-10-23 | 马鞍山市恒毅机械制造有限公司 | Powder metallurgy material of gasoline engine piston and preparation method of powder metallurgy material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453251A (en) * | 2018-03-15 | 2018-08-28 | 江苏中威重工机械有限公司 | A kind of motor housing metallurgical powder |
| CN113118441A (en) * | 2019-12-30 | 2021-07-16 | 吉凯恩粉末冶金(仪征)有限公司 | High-performance automobile part powder metallurgy part and preparation method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160413 |