CN105240490A - Timing chain wheel for enhanced car engine and manufacturing method of timing chain wheel - Google Patents
Timing chain wheel for enhanced car engine and manufacturing method of timing chain wheel Download PDFInfo
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- CN105240490A CN105240490A CN201510671876.3A CN201510671876A CN105240490A CN 105240490 A CN105240490 A CN 105240490A CN 201510671876 A CN201510671876 A CN 201510671876A CN 105240490 A CN105240490 A CN 105240490A
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- powder
- reinforced
- timing sprocket
- engine timing
- main body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/30—Chain-wheels
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a timing chain wheel for an enhanced car engine. The timing chain wheel is a disc-shaped component with powder metallurgy as a main body. The timing chain wheel comprises a thin-wall disc-shaped body. The center of a disc body of the main body is provided with a center hole. A key groove is formed in the center hole. The outer peripheral wall of the main body is provided with teeth. The main body is a disc-shaped component with the inwards-concave middle portion. According to the improvement, the bottom of the key groove is in a circular arc shape; the peripheral surface of the center hole in an inwards-concave hole of the body protrudes outwards along the center axis of the center hole to form an inner end face; reinforcing ribs are evenly distributed in the inwards-concave hole in the periphery of the inner end face; and a wear-proof composite layer is arranged on the surfaces of the teeth. The invention further discloses a manufacturing method of the timing chain wheel for the enhanced car engine. The timing chain wheel is high in structural strength and long in service life.
Description
Technical field
The present invention relates to a kind of engine component and manufacture method thereof, more particularly, the present invention relates to a kind of adopt powder metallurgy process to manufacture motorcar engine timing sprocket and manufacture method.
Background technique
Motorcar engine timing sprocket is the disc-shaped component based on powder metallurgy, comprises thin-wall circular disc-shaped main body, and the disk body center of main body is provided with center hole, is provided with keyway in center hole, and the outer circumferential walls of main body is provided with tooth.Existing motorcar engine timing sprocket is generally Thin-walled Straight tabular component, and structure is simple, easy to manufacture, but structural rigidity, intensity are lower, and working life is short.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide one can significantly improve structural strength, rigidity, the reinforced motorcar engine timing sprocket increased the service life, present invention also offers the manufacture method of this reinforced motorcar engine timing sprocket.
The present invention is achieved through the following technical solutions technical goal.
Reinforced motorcar engine timing sprocket is the disc-shaped component based on powder metallurgy, comprises thin-wall circular disc-shaped main body; The disk body center of described main body is provided with center hole, is provided with keyway in center hole, and the outer circumferential walls of main body is provided with tooth; Its improvements are: described main body is the discoid component of middle part indent.
In said structure, described keyway bottom land is circular arc.
In said structure, the center hole peripheral portion surface centrally hole central axis outwardly convex in described main body inward recess, forms interior edge face; Uniform stiffening rib is provided with in the inward recess of described interior edge face surrounding.
In said structure, described tooth surface is provided with wear-resistant composite bed.
In said structure, described wear-resistant composite bed be rare earth compound composite bed.
The manufacture method of above-mentioned reinforced motorcar engine timing sprocket has three kinds:
Method one, described reinforced motorcar engine timing sprocket formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, all the other are iron powder, and each component sum is 100 ﹪; Corresponding technique is green density 7.5g/cm3, and sintering temperature 1200 ~ 1240 DEG C, without temper, its yield strength is 575MPa, and tensile strength reaches 955MPa, and hardness is 98HRB, and impact toughness is 31.3J/cm
2.
Further improvement is, in above-mentioned formula, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm.
Method two, described reinforced motorcar engine timing sprocket formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, all the other are iron powder, and each component sum is 100 ﹪; Corresponding technique is green density 7.5g/cm
3, sintering temperature 1200-1240 DEG C, without temper, its yield strength is 578MPa, tensile strength reaches 962MPa, hardness is 80-85HRA, impact toughness is 58J/cm
2.
Further improvement is, in above-mentioned formula, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm.
Method three, described reinforced motorcar engine timing sprocket formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, boron 2, all the other are iron powder, each component sum is 100 ﹪, makes through batch mixing, compacting, sintering, heating, forge hot, postprocessing working procedures step.
The present invention compared with prior art, has following good effect:
1, main body is the discoid component of middle part indent, significantly improves structural strength, rigidity, extends working life of the present invention.
2, keyway bottom land is circular arc, and the larger stress that keyway bottom land horn structure can be avoided to produce is concentrated, and extends working life of the present invention further.
Be provided with uniform stiffening rib in the inward recess of 3, interior edge face surrounding, improve structural strength of the present invention, rigidity further.
4, tooth surface is provided with wear-resistant composite bed, can significantly improve the wear resistance of tooth, extends working life of the present invention further.
5, the present invention's formula by weight, and nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, all the other are iron powder, and each component sum is 100 ﹪.Prepared sintered alloy is with compared with the matrix composition alloy Fe.1.75Ni.0.5Mo.1.5Cu.0.5C optimized, and yield strength improves 175MPa, tensile strength improves 355MPa, hardness improves 17HRB, impact toughness improves 5J/cm
2, solve preparation cost high problem when prior art improves sintered alloy obdurability.Prior art improves the problem of the measure of sintered alloy obdurability: add expensive alloying element Ni or Mo, increases the problem of cost of material; Adopt new compacting or sintering process usually to need new equipment, equipment investment is high: increase subsequent treatment process, then add the manufacture cycle, and cost is often higher.
6, the present invention's formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, all the other are iron powder, and each component sum is 100 ﹪.Add rare-earth elements La in formula, the intensity of made powder metallurgy, impact toughness can be significantly improved; Add molybdenum disulfide, play good lubrication regulating action.Prepared sintered alloy yield strength improves 8MPa, and tensile strength improves 12MPa, and impact toughness improves 26.7J/cm
2, hardness is suddenlyd change to 80-85HRA from 98HRB.
7, the present invention's formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, boron 2, all the other are iron powder, each component sum is 100 ﹪, prepared sintered alloy significantly improves decay resistance, extends more than one times working life.
8, the present invention's formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, all the other are iron powder, each component sum is 100 ﹪, in formula, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm, prepared sintered alloy tensile strength improves 257MPa, and hardness is suddenlyd change to 31HRC from 80-85HRA.
9, the present invention's formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, all the other are iron powder, each component sum is 100 ﹪, in formula, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm, prepared sintered alloy tensile strength improves 253MPa, and hardness is suddenlyd change to 32HRC from 81-87HRA.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the B direction view in Fig. 2.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Reinforced motorcar engine timing sprocket shown in the drawings, is the disc-shaped component based on powder metallurgy, comprises thin-wall circular disc-shaped main body 1; Main body 1 is the discoid component of middle part indent, and center is provided with center hole 1.1, the centrally hole 1.1 central axis outwardly convex of the center hole 1.1 peripheral portion surface in main body 1 inward recess, forms interior edge face 1.4; Uniform stiffening rib 2 is provided with in the inward recess of interior edge face 1.4 surrounding.
Be provided with keyway 1.2 in center hole 1.1, keyway 1.2 bottom land is circular arc.
The outer circumferential walls of main body 1 is provided with tooth 1.3, and tooth 1.3 surface is provided with wear-resistant composite bed, and wear-resistant composite bed is rare earth compound composite bed.
Embodiment prepared by main body 1 material of the present invention is as follows:
Embodiment 1:
By weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, all the other are iron powder, and each component sum is 100 ﹪; Corresponding technique is green density 7.5g/cm3, and sintering temperature 1200 ~ 1240 DEG C, without temper.
After testing, the yield strength of made sintered alloy is 575MPa, and tensile strength reaches 955MPa, and hardness is 98HRB, and impact toughness is 31.3J/cm
2.
Embodiment 2:
During embodiment 1 fills a prescription, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm.
After testing, the tensile strength of made sintered alloy reaches 1212MPa, and hardness is 31HRC.
Embodiment 3:
By weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, all the other are iron powder, and each component sum is 100 ﹪; Corresponding technique is green density 7.5g/cm
3, sintering temperature 1200-1240 DEG C, without temper.
After testing, the yield strength of made sintered alloy is 578MPa, tensile strength reaches 962MPa, hardness is 80-85HRA, impact toughness is 58J/cm
2.
Embodiment 4:
During embodiment 3 fills a prescription, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm.
After testing, the tensile strength of made sintered alloy reaches 1215MPa, and hardness is 32HRC.
Embodiment 5:
By weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, boron 2, all the other are iron powder, each component sum is 100 ﹪, makes through batch mixing, compacting, sintering, heating, forge hot, postprocessing working procedures step.
After testing, the yield strength of made sintered alloy is 577MPa, tensile strength reaches 961MPa, hardness is 81-87HRA, impact toughness is 58J/cm
2, reach 2 years working life.
Claims (10)
1. a reinforced motorcar engine timing sprocket, is the disc-shaped component based on powder metallurgy, comprises thin-wall circular disc-shaped main body (1); The disk body center of described main body (1) is provided with center hole (1.1), is provided with keyway (1.2) in center hole (1.1), and the outer circumferential walls of main body (1) is provided with tooth (1.3); It is characterized in that: the discoid component that described main body (1) is middle part indent.
2. reinforced motorcar engine timing sprocket according to claim 1, is characterized in that: described keyway (1.2) bottom land is circular arc.
3. reinforced motorcar engine timing sprocket according to claim 2, is characterized in that: centrally hole (1.1) the central axis outwardly convex of center hole (1.1) the peripheral portion surface in described main body (1) inward recess, forms interior edge face (1.4); Uniform stiffening rib (2) is provided with in the inward recess of described interior edge face (1.4) surrounding.
4. reinforced motorcar engine timing sprocket according to claim 3, is characterized in that: described tooth (1.3) surface is provided with wear-resistant composite bed.
5. reinforced motorcar engine timing sprocket according to claim 4, is characterized in that: described wear-resistant composite bed for rare earth compound composite bed.
6. the manufacture method of the reinforced motorcar engine timing sprocket that one of claims 1 to 3 is described, it is characterized in that: described reinforced motorcar engine timing sprocket formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, all the other are iron powder, and each component sum is 100 ﹪; Corresponding technique is green density 7.5g/cm
3, sintering temperature 1200 ~ 1240 DEG C, without temper, its yield strength is 575MPa, and tensile strength reaches 955MPa, and hardness is 98HRB, and impact toughness is 31.3J/cm
2.
7. the manufacture method of the reinforced motorcar engine timing sprocket that one of claims 1 to 3 is described, it is characterized in that: described reinforced motorcar engine timing sprocket formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, all the other are iron powder, and each component sum is 100 ﹪; Corresponding technique is green density 7.5g/cm
3, sintering temperature 1200-1240 DEG C, without temper, its yield strength is 578MPa, tensile strength reaches 962MPa, hardness is 80-85HRA, impact toughness is 58J/cm
2.
8. the manufacture method of the reinforced motorcar engine timing sprocket that one of claims 1 to 3 is described, it is characterized in that: described reinforced motorcar engine timing sprocket formula by weight, nickel powder 1.75, molybdenum powder 0.5, copper powder 1.5, chromium powder 1.7, manganese powder 1.0, plumbago 0.8, cerium dioxide 0.2, zine stearate 0.05 ﹪, molybdenum disulfide 0.5 ﹪, rare-earth elements La 0.6%, boron 2, all the other are iron powder, each component sum is 100 ﹪, makes through batch mixing, compacting, sintering, heating, forge hot, postprocessing working procedures step.
9. the manufacture method of reinforced motorcar engine timing sprocket according to claim 6, is characterized in that: in described formula, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm.
10. the manufacture method of reinforced motorcar engine timing sprocket according to claim 7, is characterized in that: in described formula, chromium and part iron reach part by weight by interpolation containing the subparticle Cr-Fe alloy powder that Mean particle diameter is 4.65 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671876.3A CN105240490A (en) | 2015-10-19 | 2015-10-19 | Timing chain wheel for enhanced car engine and manufacturing method of timing chain wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671876.3A CN105240490A (en) | 2015-10-19 | 2015-10-19 | Timing chain wheel for enhanced car engine and manufacturing method of timing chain wheel |
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| CN105240490A true CN105240490A (en) | 2016-01-13 |
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| CN201510671876.3A Pending CN105240490A (en) | 2015-10-19 | 2015-10-19 | Timing chain wheel for enhanced car engine and manufacturing method of timing chain wheel |
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| CN205244306U (en) * | 2015-10-19 | 2016-05-18 | 泰州市科诚汽车零配件有限公司 | Strenghthened type car engine timing sprocket |
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2015
- 2015-10-19 CN CN201510671876.3A patent/CN105240490A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101275661A (en) * | 2008-05-14 | 2008-10-01 | 吕元之 | Powder metallurgy passenger car chain pulley and method for producing the same |
| CN201916455U (en) * | 2010-12-15 | 2011-08-03 | 吕元之 | Powder metallurgy chain wheel for sedan |
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| CN102433510A (en) * | 2011-12-08 | 2012-05-02 | 东南大学 | Iron-based powder metallurgy alloy with high strength and high toughness and preparation method thereof |
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| CN103821904A (en) * | 2012-11-16 | 2014-05-28 | 泰州市科诚汽车零配件有限公司 | High performance motorcycle engine powder metallurgy gear cam and manufacturing method thereof |
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Application publication date: 20160113 |