WO2013044594A1 - Composite cam sheet from powder metallurgy and preparation method therefor - Google Patents

Composite cam sheet from powder metallurgy and preparation method therefor Download PDF

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Publication number
WO2013044594A1
WO2013044594A1 PCT/CN2012/001330 CN2012001330W WO2013044594A1 WO 2013044594 A1 WO2013044594 A1 WO 2013044594A1 CN 2012001330 W CN2012001330 W CN 2012001330W WO 2013044594 A1 WO2013044594 A1 WO 2013044594A1
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WIPO (PCT)
Prior art keywords
powder metallurgy
cam
powder
composite cam
sheet
Prior art date
Application number
PCT/CN2012/001330
Other languages
French (fr)
Chinese (zh)
Inventor
王林山
汪礼敏
郭子磊
董小江
戴赫
张景怀
Original Assignee
北京有色金属研究总院
有研粉末新材料（北京）有限公司
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Priority to US14/347,445 priority Critical patent/US20140234650A1/en
Publication of WO2013044594A1 publication Critical patent/WO2013044594A1/en

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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
    • 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 invention belongs to the technical field of powder metallurgy, and in particular relates to a powder metallurgy composite cam sheet and a preparation method thereof.
  • the assembled camshaft has the advantages of light weight, flexible design and processing, and good wear resistance. It is widely used in automobiles and motorcycle engines.
  • Conventional cam sheets are generally prepared by a process such as forging, extrusion, drawing, and then surface hardening.
  • the steel sheet is directly forged into a blank by a forging process, and then subjected to cold forging to prepare a cam piece having high dimensional accuracy. It is also possible to directly prepare the cam piece by cold forging. It is also possible to directly prepare a cam piece by an extrusion process, and then perform cold drawing to perform dimensional control to obtain a cam piece having a high dimensional accuracy.
  • People have also developed the use of steel pipes for cold drawing to prepare cam sheets. .... [:: The workmanship has the disadvantages of high production costs and difficult adjustment of material composition.
  • cam sheets prepared by conventional powder metallurgy are likely to cause cracking of the cam sheets during assembly due to disadvantages such as low density and poor impact toughness.
  • the researchers hot-forged powder metallurgy cam sheets to further increase their density, reduce their porosity, improve impact toughness, and then quench the surface to obtain powder metallurgy cam sheets that meet the requirements.
  • the above process has disadvantages such as high production cost.
  • the object of the present invention is to provide a powder metallurgy composite cam sheet and a method of preparing the same, in view of the deficiencies of the prior art.
  • the powder metallurgy composite cam sheet provided by the invention is characterized in that the powder metallurgy composite cam sheet is a powder metallurgy cam composited on the surface of the base body.
  • the substrate in the powder metallurgy composite cam sheet may be a circular tube or a shaped tube made of steel, nickel, titanium, copper, aluminum or the like and having a thickness of 0.1 to 20 iiim.
  • the powder metallurgy cam in the powder metallurgy composite cam sheet may be an iron-based powder metallurgy village material, a titanium-based powder metallurgy material, a nickel-based powder metallurgy material, a cemented carbide or the like.
  • the thickness can be from 0.5 to 50 mm.
  • the preparation method of the powder metallurgy composite cam sheet includes sintering welding, brazing, argon arc argon, laser welding, hot pressing, etc., respectively, such as 'F:
  • the base powder and the cam powder are layered and filled in a mold, and then pressed to prepare a composite cam sheet compact, and finally sintered at 600 to 1500 ° C for 10 to 120 minutes to prepare a powder metallurgy composite cam sheet.
  • the matrix powder and the cam powder may be layered and filled in a mold, and prepared into a powder metallurgy composite cam sheet by hot pressing at 500 to 1400 Torr for 10 to 120 minutes.
  • Advantageous Effects of the Invention The powder metallurgy composite cam sheet prepared by the invention has the advantages of dimensional stability, good impact toughness, good wear resistance and low cost, and can replace the overall preparation for forging, drawing, powder metallurgy and the like.
  • the cam piece is suitable for mechanical assembly, hydroforming, welding and other processes to prepare hollow camshafts, which can meet the requirements of the assembled camshaft.
  • FIG. 1 is a schematic view showing the structure of a powder metallurgy composite cam sheet of the present invention.
  • the invention provides a powder metallurgy composite cam sheet and a preparation method thereof, including powder metallurgy, sintering welding, brazing, argon arc welding, laser welding, hot pressing, etc., the structure of the powder metallurgy composite cam sheet shown in Fig. 1 Schematic, compounded on the base 11 ?? t powder metallurgy cam 12.
  • the 020x3x 13mm 45# steel pipe is subjected to surface blasting, degreasing, degreasing, cleaning, etc.
  • the mixed powder of Fe-Cr-Mo-Si-PC chemical composition is pressed at 600 MPa 'F to make the inner hole 020.1 x 5x 13 mm (top) A portion of the 37.3 mm) cam piece green body, and then the steel tube and the cam piece green body were assembled together, and sintered at a temperature of 1 120 for 30 minutes in a hydrogen atmosphere F to prepare a powder metallurgy composite cam piece.
  • Example 2 A composite of Fe-Cr-Mo-Si-PC chemical composition was pressed at 600 MPa to produce a cam blank with an inner hole of 025.3 x 3 x 13 mm (top portion 37.3 mni) at a temperature of 11.20 Torr for 30 minutes. Sintering under a hydrogen atmosphere to prepare a powder metallurgy cam sheet. The 025 x2x i3mm 45# steel pipe is sprayed, rusted, degreased, cleaned, etc., and then the steel pipe and the powder metallurgy cam piece are assembled in the middle, and 0.03mm copper foil is placed in the middle at a temperature of 1 1 15. The powder metallurgy composite cam piece was prepared by welding in an ammonia decomposition atmosphere for 20 minutes.
  • the composite powder of Fe-Cr-Mo-Si-PC chemical composition was pressed at 600 MPa to make a cam piece blank with an inner hole of 025.3 x 3x 13 mm (tip portion 37.3 mm) at a temperature of 112 (TC, time 30 minutes). Sintering under a hydrogen atmosphere to prepare a powder metallurgy cam sheet.
  • the 025x2x13mm 45# steel pipe is subjected to surface blasting, derusting, degreasing, cleaning, etc., and then the steel pipe and the powder metallurgy cam piece are assembled together, and laser welding is used. , a powder metallurgy composite cam sheet is prepared.
  • the cemented carbide of YG12 (WC_Col2) is machined into a cam piece with a bore of 035.3x3 x 20mm (top part 50mni).
  • the 45# steel pipe of 035> ⁇ 4> ⁇ 2Omm is subjected to surface blasting, derusting, degreasing, cleaning, etc., and then the steel pipe and the powder metallurgy cam piece are assembled together.
  • 0.03mm AgCu28 solder is placed in the middle at the temperature.
  • Powder metallurgy composite cam sheets were prepared by brazing at 820 to 850 ° C for 20 minutes under vacuum.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Powder Metallurgy (AREA)
  • Gears, Cams (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A composite cam sheet from powder metallurgy (1), wherein a cam of powder metallurgy (12) is composited on the surface of a matrix (11). The preparation method for the composite cam sheet from powder metallurgy comprises sinter-welding, soldering, welding with argon arcs, laser welding, and hot pressing, etc. The composite cam sheet from powder metallurgy has a stable size, good impact toughness, and good wear-resistance, is low cost, and can replace the integral cam sheets currently made by the processes of forging, drawing, and powder metallurgy, etc. The cam sheet is suitable for the preparation of a hollow camshaft by processes such as mechanical fitting, hydraulic shaping, and welding, and satisfies the usage requirements for a fitting-type camshaft.

Description

一种粉末冶金复合凸轮片及其制备方法 技术领域  Powder metallurgy composite cam sheet and preparation method thereof
本发明属于粉末冶金技术领域， 特别涉及一种粉末冶金复合凸轮片及其制 备方法。  The invention belongs to the technical field of powder metallurgy, and in particular relates to a powder metallurgy composite cam sheet and a preparation method thereof.
背景技术 Background technique
装配式凸轮轴具有质量轻、 可柔性设计和加工、 耐磨性好等优点， 目前广 泛应用于汽车和摩托车的发动机。 传统的凸轮片一般采用锻造、 挤压、 拉拔等 工艺制备而成， 然后再进行表面淬火处理。 采用锻造工艺直接将钢片热锻成毛 坯、 再进行冷锻制备尺寸精度高的凸轮片。 还可以采用冷锻直接制备凸轮片。 也可以直接采用挤压工艺制备出凸轮片， 再进行冷拉拔进行尺寸控制， 得到尺 寸精度很高的凸轮片。 人们还开发采用钢管直接进行冷拔制备凸轮片。 .... [：：述工 艺存在生产成本高、 材料成分不易调整等不足。  The assembled camshaft has the advantages of light weight, flexible design and processing, and good wear resistance. It is widely used in automobiles and motorcycle engines. Conventional cam sheets are generally prepared by a process such as forging, extrusion, drawing, and then surface hardening. The steel sheet is directly forged into a blank by a forging process, and then subjected to cold forging to prepare a cam piece having high dimensional accuracy. It is also possible to directly prepare the cam piece by cold forging. It is also possible to directly prepare a cam piece by an extrusion process, and then perform cold drawing to perform dimensional control to obtain a cam piece having a high dimensional accuracy. People have also developed the use of steel pipes for cold drawing to prepare cam sheets. .... [:: The workmanship has the disadvantages of high production costs and difficult adjustment of material composition.
为了降低成本， 采用常规粉末冶金制备的凸轮片， 由于其密度低、 冲击韧 性差等缺点， 在装配时容易导致凸轮片开裂。 为了改善粉末冶金凸轮片的上述 不足， 研究人员对粉末冶金凸轮片进行热锻， 进一步提高其密度、 减少其孔隙， 提高冲击韧性， 然后在表面淬火， 得到满足使用的粉末冶金凸轮片。 上述工艺 存在生产成本较高等不足。  In order to reduce the cost, cam sheets prepared by conventional powder metallurgy are likely to cause cracking of the cam sheets during assembly due to disadvantages such as low density and poor impact toughness. In order to improve the above-mentioned deficiencies of powder metallurgy cam sheets, the researchers hot-forged powder metallurgy cam sheets to further increase their density, reduce their porosity, improve impact toughness, and then quench the surface to obtain powder metallurgy cam sheets that meet the requirements. The above process has disadvantages such as high production cost.
发明内容 Summary of the invention
本发明的目的是针对现有技术的不足， 而提出一种粉末冶金复合凸轮片及 其制备方法。  SUMMARY OF THE INVENTION The object of the present invention is to provide a powder metallurgy composite cam sheet and a method of preparing the same, in view of the deficiencies of the prior art.
本发明提供的粉末冶金复合凸轮片， 其特征在于， 所述粉末冶金复合凸轮 片是在基体的表面复合上粉末冶金凸轮。 所述粉末冶金复合凸轮片中的基体可以为钢铁、 镍、 钛、 铜、 铝等材料制 成的厚度为 0.1〜20iiim的圆形管或异型管。 所述粉末冶金复合凸轮片中的粉末冶金凸轮可以为铁基粉末冶金村料、 钛 基粉末冶金材料、 镍基粉末冶金材料、 硬质合金等。 其厚度可以为 0.5〜50mm。 所述粉末冶金复合凸轮片的制备方法包括烧结焊、 钎焊、 氩弧悍、 激光焊、 热压等， 分别叙述如 ' F: The powder metallurgy composite cam sheet provided by the invention is characterized in that the powder metallurgy composite cam sheet is a powder metallurgy cam composited on the surface of the base body. The substrate in the powder metallurgy composite cam sheet may be a circular tube or a shaped tube made of steel, nickel, titanium, copper, aluminum or the like and having a thickness of 0.1 to 20 iiim. The powder metallurgy cam in the powder metallurgy composite cam sheet may be an iron-based powder metallurgy village material, a titanium-based powder metallurgy material, a nickel-based powder metallurgy material, a cemented carbide or the like. The thickness can be from 0.5 to 50 mm. The preparation method of the powder metallurgy composite cam sheet includes sintering welding, brazing, argon arc argon, laser welding, hot pressing, etc., respectively, such as 'F:
(1) 采用常规粉末压制方法制备粉末冶金凸轮压坯， 与基体装配在一起， 然后在温度为 600〜1500Ό， 时间为 10〜120分钟的工艺条件下进行烧结焊，烧结 悍气氛为氢气、 分解氨或真空等气氛， 制备成粉末冶金复合凸轮片。  (1) Preparing a powder metallurgy cam compact by a conventional powder compacting method, assembling it with a substrate, and then performing sintering welding under a process condition of a temperature of 600 to 1500 Torr for 10 to 120 minutes, and the sintered ruthenium atmosphere is hydrogen and decomposed. An atmosphere such as ammonia or vacuum is prepared into a powder metallurgy composite cam sheet.
(2)采用常规粉末压制方法制备粉末冶金凸轮压坯，在温度为 600〜1500C， 吋间为 10〜120分钟的工艺条件下，制备出粉末冶金凸轮片毛坯，然后采用钎焊、 鼠弧焊、 激光焊等工艺将基体和粉末冶金凸轮悍接在一起， 制备成粉末冶金复 合凸轮片。 其中钎料材质可以为铜、 铜合金、 镍、 镍合金、 铝、 铝合 、 钛或 钛合金等， 钎料形态为粉末、 丝或片等， 在真空、 氢气或分解氨等气氛 F进行, 温度为 600-1200 °C, 时间为 10〜120分钟。  (2) Preparing powder metallurgy cam compacts by conventional powder compaction method, preparing powder metallurgy cam sheet blanks under the conditions of temperature of 600~1500C and 10~120 minutes between turns, then using brazing and rat arc welding The process of laser welding and the like is to join the matrix and the powder metallurgy cam to prepare a powder metallurgy composite cam piece. The brazing material may be copper, copper alloy, nickel, nickel alloy, aluminum, aluminum alloy, titanium or titanium alloy, etc., and the solder material is powder, wire or sheet, etc., and is carried out in an atmosphere F such as vacuum, hydrogen or ammonia decomposition. The temperature is 600-1200 ° C and the time is 10 to 120 minutes.
(3) 将基体放在芯棒上， 填充粉末， 进行压制制备成复合凸轮片压坯， 然 后温度为 600〜1500'C， 时间为 10〜120分钟的工艺条件下进行烧结焊， 制备成粉 φ' ' /、 .\\.. /,： ΐ - 、 ΐΡ：: J 1 - I -TD广 ί (3) The substrate is placed on a mandrel, filled with powder, pressed to prepare a composite cam sheet compact, and then sintered at a temperature of 600 to 1500 ° C for 10 to 120 minutes to prepare a powder. φ' ' /, .\\.. /,: ΐ - , ΐΡ:: J 1 - I -TDGuang
(4) 将基体粉末和凸轮粉末分层填充放在模具中， 然后进行压制制备成复 合凸轮片压坯， 最后在 600〜1500°C, 进行烧结 10〜120分钟， 制备成粉末冶金复 合凸轮片  (4) The base powder and the cam powder are layered and filled in a mold, and then pressed to prepare a composite cam sheet compact, and finally sintered at 600 to 1500 ° C for 10 to 120 minutes to prepare a powder metallurgy composite cam sheet.
ί5)将基体放在芯棒上， 填充粉末， 进行 500〜1400°C热压， 时间为 10〜120 分钟. 制备成粉末冶金复合凸轮片。 Ί5) Place the substrate on the mandrel, fill the powder, and heat it at 500~1400 °C for 10~120 Minutes. Prepared into a powder metallurgy composite cam sheet.
(6 )可以将基体粉末和凸轮粉末分层填充放在模具中， 在 500〜1400Γ， 时 间为 10〜120分钟下， 热压制备成粉末冶金复合凸轮片。 本发明的有益效果： 本发明制备的粉末冶金复合凸轮片具有尺寸稳定、 冲 击韧性好、 耐磨性好、 成本低等优点， 可替代目前用于锻造、 拉拔、 粉末冶金 等工艺制备的整体凸轮片， 适用于机械装配、 液压成形、 焊接等工艺制备中空 凸轮轴， 可以满足装配式凸轮轴的使用要求。 附图说明  (6) The matrix powder and the cam powder may be layered and filled in a mold, and prepared into a powder metallurgy composite cam sheet by hot pressing at 500 to 1400 Torr for 10 to 120 minutes. Advantageous Effects of the Invention: The powder metallurgy composite cam sheet prepared by the invention has the advantages of dimensional stability, good impact toughness, good wear resistance and low cost, and can replace the overall preparation for forging, drawing, powder metallurgy and the like. The cam piece is suitable for mechanical assembly, hydroforming, welding and other processes to prepare hollow camshafts, which can meet the requirements of the assembled camshaft. DRAWINGS
图 1是本发明粉末冶金复合凸轮片的结构示意图。  1 is a schematic view showing the structure of a powder metallurgy composite cam sheet of the present invention.
图中标号： 1-粉末冶金复合凸轮片； .1 1 -基体； .12-凸轮。  Numbers in the figure: 1- powder metallurgy composite cam piece; .1 1 - base; .12-cam.
具体实施方式 detailed description
本发明提出一种粉末冶金复合凸轮片及其制备方法， 包括粉末冶金、 烧结 焊、 钎焊、 氩弧焊、 激光焊、 热压等方法， 在图 1 所示的粉末冶金复合凸轮片 的结构示意图， 在基体 11上面复合 ..... t粉末冶金凸轮 12。下面例举实施例进 -步 对本发明予以说明。 但不以任何方式限制本发明。  The invention provides a powder metallurgy composite cam sheet and a preparation method thereof, including powder metallurgy, sintering welding, brazing, argon arc welding, laser welding, hot pressing, etc., the structure of the powder metallurgy composite cam sheet shown in Fig. 1 Schematic, compounded on the base 11 ..... t powder metallurgy cam 12. The invention will now be described by way of the following examples. However, the invention is not limited in any way.
实施例 1  Example 1
将 020x3x 13mm的 45#钢管， 进行表面喷砂除锈、 除油、 清洗等处理 采 用 Fe-Cr-Mo-Si-P-C 化学成分的混合粉末在 600MPa ' F进行压制成内孔 020.1 x5x 13mm (顶尖部分 37.3mm)的凸轮片生坯，然后将钢管和凸轮片生坯组装 在一起， 在温度为 1 120 、 时间为 30分钟、 氢气气氛 F进行烧结焊， 制备出粉 末冶金复合凸轮片。  The 020x3x 13mm 45# steel pipe is subjected to surface blasting, degreasing, degreasing, cleaning, etc. The mixed powder of Fe-Cr-Mo-Si-PC chemical composition is pressed at 600 MPa 'F to make the inner hole 020.1 x 5x 13 mm (top) A portion of the 37.3 mm) cam piece green body, and then the steel tube and the cam piece green body were assembled together, and sintered at a temperature of 1 120 for 30 minutes in a hydrogen atmosphere F to prepare a powder metallurgy composite cam piece.
实施例 2 采用 Fe-Cr-Mo-Si-P-C 化学成分的混合粉末在 600MPa下进佇压制成内孔 025.3 x3x 13mm (顶尖部分 37.3mni)的凸轮片生坯， 在温度为 :11.20Γ、 时间为 30 分钟、 氢气气氛下进行烧结， 制备出粉末冶金凸轮片。 将 025 x2x i3mm的 45# 钢管， 进佇表面喷砂除锈、 除油、 清洗等处理， 然后将钢管和粉末冶金凸轮片 组装在 -起， 中间放置 0.03mm的铜箔， 在温度为 1 1 15 、 时间为 20分钟、 氨 分解气氛下进行焊接， 制备出粉末冶金复合凸轮片。 Example 2 A composite of Fe-Cr-Mo-Si-PC chemical composition was pressed at 600 MPa to produce a cam blank with an inner hole of 025.3 x 3 x 13 mm (top portion 37.3 mni) at a temperature of 11.20 Torr for 30 minutes. Sintering under a hydrogen atmosphere to prepare a powder metallurgy cam sheet. The 025 x2x i3mm 45# steel pipe is sprayed, rusted, degreased, cleaned, etc., and then the steel pipe and the powder metallurgy cam piece are assembled in the middle, and 0.03mm copper foil is placed in the middle at a temperature of 1 1 15. The powder metallurgy composite cam piece was prepared by welding in an ammonia decomposition atmosphere for 20 minutes.
实施例 3  Example 3
采用 Fe-Cr-Mo-Si-P-C 化学成分的混合粉末在 600MPa 下进佇压制成内孔 025.3 x3x 13mm (顶尖部分 37.3mm)的凸轮片生坯， 在温度为 112(TC、 时间为 30 分钟、 氢气气氛下进行烧结， 制备出粉末冶金凸轮片。 将 025x2x13mm的 45# 钢管， 进行表面喷砂除锈、 除油、 清洗等处理， 然后将钢管和粉末冶金凸轮片 组装在一起， 采用激光焊接， 制备出粉末冶金复合凸轮片。  The composite powder of Fe-Cr-Mo-Si-PC chemical composition was pressed at 600 MPa to make a cam piece blank with an inner hole of 025.3 x 3x 13 mm (tip portion 37.3 mm) at a temperature of 112 (TC, time 30 minutes). Sintering under a hydrogen atmosphere to prepare a powder metallurgy cam sheet. The 025x2x13mm 45# steel pipe is subjected to surface blasting, derusting, degreasing, cleaning, etc., and then the steel pipe and the powder metallurgy cam piece are assembled together, and laser welding is used. , a powder metallurgy composite cam sheet is prepared.
实施例 4  Example 4
采用 YG12 ( WC_Col2 ) 的硬质合金加工成内孔 035.3x3 x20mm (顶尖部分 50mni)的凸轮片。 将 035><4><2Omm的 45#钢管， 进行表面喷砂除锈、 除油、 清 洗等处理， 然后将钢管和粉末冶金凸轮片组装在一起. 中间放置 0.03mm 的 AgCu28钎料， 在温度为 820〜850°C、 时间为 20分钟、 真空下进行钎焊， 制备 出粉末冶金复合凸轮片。  The cemented carbide of YG12 (WC_Col2) is machined into a cam piece with a bore of 035.3x3 x 20mm (top part 50mni). The 45# steel pipe of 035><4><2Omm is subjected to surface blasting, derusting, degreasing, cleaning, etc., and then the steel pipe and the powder metallurgy cam piece are assembled together. 0.03mm AgCu28 solder is placed in the middle at the temperature. Powder metallurgy composite cam sheets were prepared by brazing at 820 to 850 ° C for 20 minutes under vacuum.
以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围并不局 限于此. 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易 想到的变化或替换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护 范围应该以权利要求的保护范围为准。  The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Any one skilled in the art can easily think of changes or within the technical scope disclosed by the present invention. Alternatives are intended to be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

权 利 要 求 书 Claim
1、 一种粉末冶金复合凸轮片， 其特征在于， 该粉末冶金复合凸轮片 U ) 是在基体 U 1 ) 的表面复合上粉末冶金凸轮 （12 )。  A powder metallurgy composite cam sheet, characterized in that the powder metallurgy composite cam sheet U) is a powder metallurgy cam (12) compounded on the surface of the base body U 1 ).
2、 根据权利要求 1所述的复合凸轮片， 其特征在于， 所述粉末冶金复合 凸轮片中的基体 （11 ) 为钢铁、 镍、 钛、 铜或铝制成的圆形管或异型管。  The composite cam piece according to claim 1, wherein the base body (11) in the powder metallurgy composite cam piece is a circular tube or a shaped tube made of steel, nickel, titanium, copper or aluminum.
3、 根据权利要求 1所述的复合凸轮片， 其特征在于， 所述粉末冶金复合 凸轮片中的粉末冶金凸轮 （12 ) 为铁基粉末冶金材料、 钛基粉末冶金材料、 镍 基粉末冶金材料或硬质合金。  The composite cam piece according to claim 1, wherein the powder metallurgy cam (12) in the powder metallurgy composite cam piece is an iron-based powder metallurgy material, a titanium-based powder metallurgy material, and a nickel-based powder metallurgy material. Or cemented carbide.
4、 根据权利要求 1所述的复合凸轮片， 其特征在于， 所述基体 Π 1 ) 厚 度为 0.1〜20mm， 所述粉末冶金复合凸轮片中的粉末冶金凸轮 （12 ) 厚度为 0.5〜50mm。  The composite cam piece according to claim 1, wherein the base Π 1 ) has a thickness of 0.1 to 20 mm, and the powder metallurgy cam (12) in the powder metallurgy composite cam piece has a thickness of 0.5 to 50 mm.
5、 权利要求 1至 4任意一个权利要求所述的粉末冶金复合凸轮片的制备 方法， 其特征在于该方法如下： 采用常规粉末压制方法制备粉末冶金凸轮 （2 ) 压坯， 与基体 （11 ) 装配在一起， 然后在温度为 600〜1500° ( ， 时间为 1.0 120 分钟的工艺条件 ·' F进行烧结焊， 烧结悍气氛为氢气气氛、 氨分解气氛或真空， 制备成粉末冶金复合凸轮片。  The method for preparing a powder metallurgy composite cam sheet according to any one of claims 1 to 4, characterized in that the method is as follows: a powder metallurgy cam (2) compact is prepared by a conventional powder compacting method, and a substrate (11) They are assembled together, and then sintered at a temperature of 600 to 1500 ° (for a process condition of 1.0 120 minutes, a sintering atmosphere, a hydrogen atmosphere, an ammonia decomposition atmosphere or a vacuum) to prepare a powder metallurgy composite cam sheet.
6、 权利要求 1至 4任意一个权利要求所述的粉末冶金复合凸轮片的制备 方法， 其特征在于该方法如 ' F : 采用常规粉末压制方法制备粉末冶金凸轮 （2 ) 压坯， 在温度为 600〜150(TC， 时间为 10〜120分钟的工艺条件下， 制备出粉末冶 金凸轮片毛坯，然后采用钎悍、氩弧悍或激光焊将基体（1 )和粉末冶金凸轮（2 ) 焊接在一起， 制备成粉末冶金复合凸轮片， 其中钎料材质为铜、 铜合金、 镍、 镍合金、 铝、 铝合金、 钛或钛合金， 形态为粉末、 丝或片， 在真空、 氢气或氨 分解气氛等保护气氛下进行， 温度为 600〜120()°C， 时间为 10〜120分钟。 The method for preparing a powder metallurgy composite cam sheet according to any one of claims 1 to 4, characterized in that the method is as follows: 'F: a powder metallurgy cam (2) compact is prepared by a conventional powder compacting method at a temperature of A powder metallurgy cam sheet blank is prepared under the process conditions of 600 to 150 (TC, time of 10 to 120 minutes, and then the substrate (1) and the powder metallurgy cam (2) are welded by brazing, argon arc or laser welding. Together, the powder metallurgy composite cam piece is prepared, wherein the brazing material is copper, copper alloy, nickel, nickel alloy, aluminum, aluminum alloy, titanium or titanium alloy, and the form is powder, silk or sheet, and is decomposed in vacuum, hydrogen or ammonia. The atmosphere is carried out under a protective atmosphere, and the temperature is 600 to 120 () ° C, and the time is 10 to 120 minutes.
7、 权利要求 1至 4任意一个权利要求所述的粉末冶金复合凸轮片的制备 方法， 其特征在于该方法如 F: 将基体 （11 ) 放在芯棒上， 填充粉末， 进行压 制制备成复合凸轮片压坯， 然后温度为 600〜1500Γ， 时间为 10~120分钟的工艺 条件下进行烧结悍， 制备成粉末冶金复合凸轮片。 The method for preparing a powder metallurgy composite cam sheet according to any one of claims 1 to 4, characterized in that the method is as follows: F: placing the substrate (11) on the mandrel, filling the powder, and pressing to prepare a composite The cam sheet is compacted, and then sintered at a temperature of 600 to 1500 Torr for 10 to 120 minutes to prepare a powder metallurgy composite cam sheet.
8、 权利要求 1至 4任意一个权利要求所述的粉末冶金复合凸轮片的制备 方法， 其特征在于该方法如下： 将基体粉末和凸轮粉末平面方向分层填充放在 模具中， 然后进行压制制备成复合凸轮片 （1 )压坯， 最后在 600〜1500°C , 进行 烧结 10〜120分钟， 制备成粉末冶金复合凸轮片。  The method for preparing a powder metallurgy composite cam sheet according to any one of claims 1 to 4, characterized in that the method is as follows: layer-filling the matrix powder and the cam powder in a planar direction in a mold, followed by pressing preparation The composite cam piece (1) is pressed, and finally sintered at 600 to 1500 ° C for 10 to 120 minutes to prepare a powder metallurgy composite cam piece.
9、 权利要求 1.至 4任意一个权利要求所述的粉末冶金复合凸轮片的制备 方法， 其特征在于该方法如 : 将基体 （11 ) 放在芯棒上， 填充粉末， 进行 60()〜1400 热压， 时间为 10〜】20分钟， 制备成粉末冶金复合凸轮片。  The method for preparing a powder metallurgy composite cam sheet according to any one of claims 1 to 4, wherein the method comprises: placing a substrate (11) on a mandrel, filling the powder, and performing 60 ()~ 1400 hot pressing, time 10~] 20 minutes, prepared into a powder metallurgy composite cam sheet.
10、 权利要求 1至 4任意一个权利要求所述的粉末冶金复合凸轮片的制备 方法， 其特征在亍该方法如下： 将基体粉末和凸轮粉末分层填充放在模具中， 在 500〜1400Ό , 时间为 10〜120分钟下， 热压制备成粉末冶金复合凸轮片。  10. A method of preparing a powder metallurgy composite cam sheet according to any one of claims 1 to 4, characterized in that the method is as follows: the base powder and the cam powder are layered and filled in a mold at 500 to 1400 Torr. The time is 10 to 120 minutes, and hot pressing is prepared into a powder metallurgy composite cam sheet.
PCT/CN2012/001330 2011-09-29 2012-09-28 Composite cam sheet from powder metallurgy and preparation method therefor WO2013044594A1 (en)

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