US20140234650A1 - Powder metallurgy composite cam sheet and preparation method thereof - Google Patents
Powder metallurgy composite cam sheet and preparation method thereof Download PDFInfo
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- US20140234650A1 US20140234650A1 US14/347,445 US201214347445A US2014234650A1 US 20140234650 A1 US20140234650 A1 US 20140234650A1 US 201214347445 A US201214347445 A US 201214347445A US 2014234650 A1 US2014234650 A1 US 2014234650A1
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- United States
- Prior art keywords
- cam
- metallurgy
- power metallurgy
- power
- matrix
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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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
-
- 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
- B22F5/006—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of flat products, e.g. sheets
-
- 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
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/02—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers
- B22F7/04—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite layers with one or more layers not made from powder, e.g. made from solid metal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12014—All metal or with adjacent metals having metal particles
- Y10T428/12028—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, etc.]
- Y10T428/12063—Nonparticulate metal component
Definitions
- the present invention relates to the technical field of powder metallurgy, and particularly, to a powder metallurgy composite cam sheet and a preparation method thereof.
- Assembled camshafts have advantages of light weight, flexible design and processing, good abrasion resistance and so on, and have been widely used in engines for automobile and motorcycle.
- Conventional cam sheets are produced generally by adopting forging, extrusion, drawing or other processes, and then are subjected to a surface quenching treatment.
- a steel piece is hot forged to be a blank directly by using forging process, and then is subjected to cold forging so as to fabricate a cam sheet with a high dimensional accuracy.
- Cold forging can be used to prepare a cam sheet directly as well.
- cam sheet that is fabricated by using conventional power metallurgy for the sake of reducing the cost, it tends to crack upon assembly due to its drawbacks of low density, poor impact toughness, etc.
- researchers perform hot forging on the power metallurgy cam sheet to further enhance its density, reduce its porosity, and improve impact toughness, and then perform quenching on the surface, so that a power metallurgy cam sheet satisfying usage requirements is attained.
- the above process has shortcomings of relatively high production cost and so on.
- An object of the present invention is to provide a powder metallurgy composite cam sheet and a fabrication method thereof, aiming at shortcomings in prior art.
- the power metallurgy composite cam sheet provided by the invention is characterized in that, the power metallurgy composite cam sheet is constructed by combining a power metallurgy on a surface of a matrix.
- the matrix in the power metallurgy composite cam sheet may be a circular tube or a special-shaped tube with a thickness ranged from 0.1-20 mm that is made of steel, nickel, titanium, copper, aluminum or other material.
- the power metallurgy cam in the power metallurgy composite cam sheet may be of an iron-based powder metallurgy material, a titanium-based power metallurgy material, a nickel-based power metallurgy material, a hard alloy, or the like. Its thickness may be in the range of 0.5-50 mm.
- the fabrication method of the power metallurgy composite cam sheet includes sinter welding, braze welding, argon arc welding, laser welding, hot pressing and so on, which will be described as follows, respectively.
- a powder metallurgy cam pressed compact is fabricated by using a conventional powder pressing method, assembled with the matrix, and then subjected to sinter welding under such process conditions that the temperature is in the range of 600-1500° C. and the time is in the range of 10-120 minutes, the atmosphere for the sinter welding being an atmosphere of hydrogen gas, decomposed ammonia, vacuum, or the like, to be fabricated into a powder metallurgy composite cam sheet.
- a powder metallurgy cam pressed compact is fabricated by using a conventional powder pressing method, a blank for a powder metallurgy cam sheet is fabricated by it under such process conditions that the temperature is in the range of 600-1500° C. and the time is in the range of 10-120 minutes, and then a matrix and the powder metallurgy cam are welded together by using braze welding, argon arc welding, laser welding or other process, so as to fabricate a powder metallurgy composite cam sheet.
- material for the solder may be copper, a copper alloy, nickel, a nickel alloy, aluminum, an aluminum alloy, titanium, a titanium alloy, or the like
- morphology of the solder may be powder-shaped, wire-shaped, piece-shaped, or the like. It is carried out in an atmosphere of vacuum, hydrogen gas, decomposed ammonia, or the like, the temperature being in the range of 600-1200° C., and the time being in the range of 10-120 minutes.
- a matrix is placed on a core rod, and after powders are filled, it is pressed to be fabricated into a composite cam sheet compact. Then, it is subjected to sinter welding under such process conditions that the temperature is in the range of 600-1500° C. and the time is in the range of 10-120 minutes, to be fabricated into a power metallurgy composite cam sheet.
- Matrix powders and cam powders are placed in layers into a mold by way of filling, and then are pressed to be fabricated into a composite cam sheet compact. At last, it is sintered at 600-1500° C. for 10 to 120 minutes, to be fabricated into a powder metallurgy composite cam sheet.
- a matrix is placed on a core rod, and after powders are filled, it is hot pressed at 500-1400° C. for 10 to 120 minutes, to be fabricated into a powder metallurgy composite cam sheet.
- the powder metallurgy composite cam sheet fabricated by the invention has merits of stable size, good impact toughness, good abrasion resistance, low cost and so on, so that it can replace an integral cam sheet that is currently fabricated by forging, drawing, power metallurgy or other process. It is suitable for the case where a hollow camshaft is prepared by mechanical assembly, hydraulic forming, welding or other process, so that the usage requirements of an assembled camshaft can be met.
- FIG. 1 is a structurally schematic view illustrating a power metallurgy composite cam sheet according to the invention.
- Reference numerals in the FIGURE 1 denotes the power metallurgy composite cam sheet; 11 denotes a matrix; and 12 denotes a cam.
- a powder metallurgy composite cam sheet and a fabrication method thereof which includes powder metallurgy, sinter welding, braze welding, argon arc welding, laser welding, hot pressing and other methods.
- a powder metallurgy cam 12 is combining on a matrix 11 .
- the invention will be described further by giving exemplary embodiments. However, they are not used to limit the invention in any way.
- a 45# steel pipe of ⁇ 20 ⁇ 3 ⁇ 13 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment.
- a cam sheet green compact having an inner hole of ⁇ 20.1 ⁇ 5 ⁇ 13 mm (with a top part of 37.3 mm) is produced with mixed powders having chemical compositions of Fe—Cr—Mo—Si—P—C by pressing at 600 MPa, and then, the steel pipe and the cam sheet green compact are assembled together, and subjected to sinter welding at a temperature of 1120° C., in H 2 atmosphere for 30 minutes, so that a power metallurgy composite cam sheet is fabricated.
- a cam sheet green compact having an inner hole of ⁇ 25.3 ⁇ 3 ⁇ 13 mm (with a top part of 37.3 mm) is produced with mixed powders having chemical compositions of Fe—Cr—Mo—Si—P—C by pressing at 600 MPa, and then, it is subjected to sintering at a temperature of 1120° C., in H 2 atmosphere for 30 minutes, so that a power metallurgy cam sheet is fabricated.
- a 45# steel pipe of ⁇ 25 ⁇ 2 ⁇ 13 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment, and then, the steel pipe and the powder metallurgy cam sheet are assembled together with a copper foil placed therebetween, and subjected to welding at a temperature of 1115° C., in decomposed ammonia atmosphere for 20 minutes, so that a power metallurgy composite cam sheet is fabricated.
- a cam sheet compact having an inner hole of ⁇ 25.3 ⁇ 3 ⁇ 13 mm (with a top part of 37.3 mm) is produced with mixed powders having chemical compositions of Fe—Cr—Mo—Si—P—C by pressing at 600 MPa, and then, it is subjected to sintering at a temperature of 1120° C., in H 2 atmosphere for 30 minutes, so that a power metallurgy cam sheet is fabricated.
- a 45# steel pipe of ⁇ 25 ⁇ 2 ⁇ 13 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment, and then, the steel pipe and the powder metallurgy cam sheet are assembled together, and fabricated to be a powder metallurgy composite cam sheet by way of laser welding.
- a cam sheet having an inner hole of ⁇ 35.3 ⁇ 3 ⁇ 20 mm (with a top part of 50 mm) is produced with the use of a hard alloy of YG12(WC_Co12) by processing.
- a 45# steel pipe of ⁇ 35 ⁇ 4 ⁇ 20 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment, and then, the steel pipe and the powder metallurgy cam sheet are assembled together with a AgCu28 solder of 0.03 mm placed therebetween, and subjected to braze welding at a temperature ranged from 820-850° C., under vacuum for 20 minutes, so that a power metallurgy composite cam sheet is fabricated.
Abstract
Description
- The present invention relates to the technical field of powder metallurgy, and particularly, to a powder metallurgy composite cam sheet and a preparation method thereof.
- Assembled camshafts have advantages of light weight, flexible design and processing, good abrasion resistance and so on, and have been widely used in engines for automobile and motorcycle. Conventional cam sheets are produced generally by adopting forging, extrusion, drawing or other processes, and then are subjected to a surface quenching treatment. A steel piece is hot forged to be a blank directly by using forging process, and then is subjected to cold forging so as to fabricate a cam sheet with a high dimensional accuracy. Cold forging can be used to prepare a cam sheet directly as well. It is also possible that extrusion process is directly used to fabricate a cam sheet, and then cold drawing is perfoimed on it for size control, so that a cam sheet with a very high dimensional accuracy is obtained. Besides, people have developed a method in which a steel tube is adopted for preparation of a cam sheet by way of cold drawing directly. The above processes have shortcomings such as high production cost, difficult adjustment for the composition of the material, etc.
- As regards a cam sheet that is fabricated by using conventional power metallurgy for the sake of reducing the cost, it tends to crack upon assembly due to its drawbacks of low density, poor impact toughness, etc. In order to ameliorate the above shortcomings of the power metallurgy cam sheet, researchers perform hot forging on the power metallurgy cam sheet to further enhance its density, reduce its porosity, and improve impact toughness, and then perform quenching on the surface, so that a power metallurgy cam sheet satisfying usage requirements is attained. The above process has shortcomings of relatively high production cost and so on.
- An object of the present invention is to provide a powder metallurgy composite cam sheet and a fabrication method thereof, aiming at shortcomings in prior art.
- The power metallurgy composite cam sheet provided by the invention is characterized in that, the power metallurgy composite cam sheet is constructed by combining a power metallurgy on a surface of a matrix.
- The matrix in the power metallurgy composite cam sheet may be a circular tube or a special-shaped tube with a thickness ranged from 0.1-20 mm that is made of steel, nickel, titanium, copper, aluminum or other material.
- The power metallurgy cam in the power metallurgy composite cam sheet may be of an iron-based powder metallurgy material, a titanium-based power metallurgy material, a nickel-based power metallurgy material, a hard alloy, or the like. Its thickness may be in the range of 0.5-50 mm.
- The fabrication method of the power metallurgy composite cam sheet includes sinter welding, braze welding, argon arc welding, laser welding, hot pressing and so on, which will be described as follows, respectively.
- (1) A powder metallurgy cam pressed compact is fabricated by using a conventional powder pressing method, assembled with the matrix, and then subjected to sinter welding under such process conditions that the temperature is in the range of 600-1500° C. and the time is in the range of 10-120 minutes, the atmosphere for the sinter welding being an atmosphere of hydrogen gas, decomposed ammonia, vacuum, or the like, to be fabricated into a powder metallurgy composite cam sheet.
- (2) A powder metallurgy cam pressed compact is fabricated by using a conventional powder pressing method, a blank for a powder metallurgy cam sheet is fabricated by it under such process conditions that the temperature is in the range of 600-1500° C. and the time is in the range of 10-120 minutes, and then a matrix and the powder metallurgy cam are welded together by using braze welding, argon arc welding, laser welding or other process, so as to fabricate a powder metallurgy composite cam sheet. Where, material for the solder may be copper, a copper alloy, nickel, a nickel alloy, aluminum, an aluminum alloy, titanium, a titanium alloy, or the like, and morphology of the solder may be powder-shaped, wire-shaped, piece-shaped, or the like. It is carried out in an atmosphere of vacuum, hydrogen gas, decomposed ammonia, or the like, the temperature being in the range of 600-1200° C., and the time being in the range of 10-120 minutes.
- (3) A matrix is placed on a core rod, and after powders are filled, it is pressed to be fabricated into a composite cam sheet compact. Then, it is subjected to sinter welding under such process conditions that the temperature is in the range of 600-1500° C. and the time is in the range of 10-120 minutes, to be fabricated into a power metallurgy composite cam sheet.
- (4) Matrix powders and cam powders are placed in layers into a mold by way of filling, and then are pressed to be fabricated into a composite cam sheet compact. At last, it is sintered at 600-1500° C. for 10 to 120 minutes, to be fabricated into a powder metallurgy composite cam sheet.
- (5) A matrix is placed on a core rod, and after powders are filled, it is hot pressed at 500-1400° C. for 10 to 120 minutes, to be fabricated into a powder metallurgy composite cam sheet.
- (6) It is possible that matrix powders and cam powders are placed in layers into a mold by way of filling, and then are hot pressed at 500-1400° C. for 10 to 120 minutes, to be fabricated into a powder metallurgy composite cam sheet.
- The invention has the following beneficial effects: the powder metallurgy composite cam sheet fabricated by the invention has merits of stable size, good impact toughness, good abrasion resistance, low cost and so on, so that it can replace an integral cam sheet that is currently fabricated by forging, drawing, power metallurgy or other process. It is suitable for the case where a hollow camshaft is prepared by mechanical assembly, hydraulic forming, welding or other process, so that the usage requirements of an assembled camshaft can be met.
-
FIG. 1 is a structurally schematic view illustrating a power metallurgy composite cam sheet according to the invention. - Reference numerals in the FIGURE: 1 denotes the power metallurgy composite cam sheet; 11 denotes a matrix; and 12 denotes a cam.
- According to the invention, there are proposed a powder metallurgy composite cam sheet and a fabrication method thereof, which includes powder metallurgy, sinter welding, braze welding, argon arc welding, laser welding, hot pressing and other methods. In the structurally schematic view illustrating a power metallurgy composite cam sheet that is shown in
FIG. 1 , apowder metallurgy cam 12 is combining on amatrix 11. Hereinafter, the invention will be described further by giving exemplary embodiments. However, they are not used to limit the invention in any way. - A 45# steel pipe of Ø20×3×13 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment. A cam sheet green compact having an inner hole of Ø20.1×5×13 mm (with a top part of 37.3 mm) is produced with mixed powders having chemical compositions of Fe—Cr—Mo—Si—P—C by pressing at 600 MPa, and then, the steel pipe and the cam sheet green compact are assembled together, and subjected to sinter welding at a temperature of 1120° C., in H2 atmosphere for 30 minutes, so that a power metallurgy composite cam sheet is fabricated.
- A cam sheet green compact having an inner hole of Ø25.3×3×13 mm (with a top part of 37.3 mm) is produced with mixed powders having chemical compositions of Fe—Cr—Mo—Si—P—C by pressing at 600 MPa, and then, it is subjected to sintering at a temperature of 1120° C., in H2 atmosphere for 30 minutes, so that a power metallurgy cam sheet is fabricated. A 45# steel pipe of Ø25×2×13 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment, and then, the steel pipe and the powder metallurgy cam sheet are assembled together with a copper foil placed therebetween, and subjected to welding at a temperature of 1115° C., in decomposed ammonia atmosphere for 20 minutes, so that a power metallurgy composite cam sheet is fabricated.
- A cam sheet compact having an inner hole of Ø25.3×3×13 mm (with a top part of 37.3 mm) is produced with mixed powders having chemical compositions of Fe—Cr—Mo—Si—P—C by pressing at 600 MPa, and then, it is subjected to sintering at a temperature of 1120° C., in H2 atmosphere for 30 minutes, so that a power metallurgy cam sheet is fabricated. A 45# steel pipe of Ø25×2×13 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment, and then, the steel pipe and the powder metallurgy cam sheet are assembled together, and fabricated to be a powder metallurgy composite cam sheet by way of laser welding.
- A cam sheet having an inner hole of Ø35.3×3×20 mm (with a top part of 50 mm) is produced with the use of a hard alloy of YG12(WC_Co12) by processing. A 45# steel pipe of Ø35×4×20 mm is subjected to surface sand blasting for rust removal, degreasing, cleaning and other treatment, and then, the steel pipe and the powder metallurgy cam sheet are assembled together with a AgCu28 solder of 0.03 mm placed therebetween, and subjected to braze welding at a temperature ranged from 820-850° C., under vacuum for 20 minutes, so that a power metallurgy composite cam sheet is fabricated.
- The foregoing are merely preferable embodiments of the invention, but the protection scope of the invention is not limited thereto. All changes or replacements, as would be obvious to those skilled in the art within the technical scope disclosed by the invention, shall be embraced in the protection scope of the invention. Therefore, the protection scope of the invention shall be defined by protection scope of claims.
Claims (14)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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CN201110294040.8A CN103032120B (en) | 2011-09-29 | 2011-09-29 | A kind of powder metallurgy multiple mounted cam sheet |
CN201110294040.8 | 2011-09-29 | ||
PCT/CN2012/001330 WO2013044594A1 (en) | 2011-09-29 | 2012-09-28 | Composite cam sheet from powder metallurgy and preparation method therefor |
Publications (1)
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US20140234650A1 true US20140234650A1 (en) | 2014-08-21 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/347,445 Abandoned US20140234650A1 (en) | 2011-09-29 | 2012-09-28 | Powder metallurgy composite cam sheet and preparation method thereof |
Country Status (3)
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US (1) | US20140234650A1 (en) |
CN (1) | CN103032120B (en) |
WO (1) | WO2013044594A1 (en) |
Cited By (2)
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CN105108460A (en) * | 2015-09-16 | 2015-12-02 | 杭州新坐标科技股份有限公司 | Manufacturing method of cam plate with no need for grinding of outer contour |
CN108526471A (en) * | 2018-06-11 | 2018-09-14 | 陕西华夏粉末冶金有限责任公司 | A kind of preparation method of ferrous based powder metallurgical friction pulley |
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CN104625583A (en) * | 2013-11-08 | 2015-05-20 | 北京有色金属研究总院 | Manufacturing method for engine assembly type camshaft |
CN104708006A (en) * | 2013-12-11 | 2015-06-17 | 北京有色金属研究总院 | Powder metallurgy compound cam and manufacturing method thereof |
CN104879179B (en) * | 2015-06-01 | 2018-06-22 | 扬州意得机械有限公司 | A kind of engine cam and its processing method |
CN106541139B (en) * | 2015-09-18 | 2019-03-12 | 东睦新材料集团股份有限公司 | A kind of preparation method of P/M cam |
CN106541141B (en) * | 2015-09-18 | 2019-03-12 | 东睦新材料集团股份有限公司 | A kind of manufacturing method of P/M cam |
CN105781649A (en) * | 2016-04-05 | 2016-07-20 | 陈焕祥 | Valve control device of tractor |
CN108127122A (en) * | 2017-12-04 | 2018-06-08 | 西安交通大学 | A kind of double material sinter soging parts of composite construction enhancing and preparation method thereof |
CN108103358A (en) * | 2017-12-20 | 2018-06-01 | 江苏能建机电实业集团有限公司 | A kind of nickel alloy and the argon arc welding technique for answering nickel alloy |
CN109175380B (en) * | 2018-09-29 | 2020-12-15 | 甘肃顺域新材料科技有限公司 | Laser additive manufacturing method of wear-resistant high-entropy alloy gear |
CN112355310B (en) * | 2020-11-12 | 2021-09-28 | 三阳纺织有限公司 | Method for manufacturing cam part and application in textile machinery |
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2011
- 2011-09-29 CN CN201110294040.8A patent/CN103032120B/en active Active
-
2012
- 2012-09-28 US US14/347,445 patent/US20140234650A1/en not_active Abandoned
- 2012-09-28 WO PCT/CN2012/001330 patent/WO2013044594A1/en active Application Filing
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US3689986A (en) * | 1967-04-01 | 1972-09-12 | Nippon Piston Ring Co Ltd | Method of casting composite cam shafts |
US5272930A (en) * | 1991-06-07 | 1993-12-28 | Nippon Piston Ring Co., Ltd. | Mechanical element having a shaft pressure-fitted into an engaging member and its manufacturing method |
US5272930B1 (en) * | 1991-06-07 | 1997-09-23 | Nippon Piston Ring Co Ltd | Mechanical element having a shaft pressure-fitted into an engaging member and its manufacturing method |
US7246588B2 (en) * | 2002-06-13 | 2007-07-24 | Nissan Motor Co., Ltd. | Assembled camshaft for engine and production method thereof |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105108460A (en) * | 2015-09-16 | 2015-12-02 | 杭州新坐标科技股份有限公司 | Manufacturing method of cam plate with no need for grinding of outer contour |
CN108526471A (en) * | 2018-06-11 | 2018-09-14 | 陕西华夏粉末冶金有限责任公司 | A kind of preparation method of ferrous based powder metallurgical friction pulley |
Also Published As
Publication number | Publication date |
---|---|
CN103032120B (en) | 2015-08-26 |
CN103032120A (en) | 2013-04-10 |
WO2013044594A1 (en) | 2013-04-04 |
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