CN113564491A - High-performance powder metallurgy valve guide pipe material - Google Patents

High-performance powder metallurgy valve guide pipe material Download PDF

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Publication number
CN113564491A
CN113564491A CN202110746694.3A CN202110746694A CN113564491A CN 113564491 A CN113564491 A CN 113564491A CN 202110746694 A CN202110746694 A CN 202110746694A CN 113564491 A CN113564491 A CN 113564491A
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China
Prior art keywords
valve guide
powder metallurgy
guide pipe
metallurgy valve
performance powder
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Pending
Application number
CN202110746694.3A
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Chinese (zh)
Inventor
王杰
孙进兵
刘晓春
陈伟
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Anhui Sentuo New Material Co ltd
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Anhui Sentuo New Material Co ltd
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Priority to CN202110746694.3A priority Critical patent/CN113564491A/en
Publication of CN113564491A publication Critical patent/CN113564491A/en
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    • 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
    • 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
    • B22F5/106—Tube or ring forms
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C22C33/0221—Using a mixture of prealloyed powders or a master alloy comprising S or a sulfur compound
    • 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
    • C22C38/12—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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention discloses a high-performance powder metallurgy valve guide pipe material which comprises the following element raw materials in parts by mass: c: 0.9% -1.8%, Ni: 0.3% -1.0%, Mo: 1.0% -5.0%, Cu: 1.0% -4.0%, Mn: 0.1% -8%, S: 0.3% -1.2%, Fe: and (4) the balance. The valve guide pipe material effectively improves the wear resistance of the powder metallurgy guide pipe, can deal with the severe working conditions of the engine, simultaneously well improves the processing performance and saves the cost of a cutter.

Description

High-performance powder metallurgy valve guide pipe material
Technical Field
The invention relates to a valve guide pipe material, in particular to a high-performance powder metallurgy valve guide pipe material.
Background
The existing powder metallurgy valve guide pipe not only requires high wear resistance to meet the requirements of an engine, but also needs certain processability to be convenient for machining after being installed on a cylinder cover, but most of the existing powder metallurgy valve guide pipe materials are made of pure iron powder or alloy wear-resistant phases are added in the materials, or the existing powder metallurgy valve guide pipe materials are good in processability and insufficient in wear resistance, or the existing powder metallurgy valve guide pipe materials are good in wear resistance and poor in processing.
Disclosure of Invention
The invention aims to provide a high-performance powder metallurgy valve guide material which can improve the wear resistance and the processability.
In order to achieve the purpose, the invention provides the following technical scheme:
a high-performance powder metallurgy valve guide pipe material comprises the following element raw materials in parts by mass: c: 0.9% -1.8%, Ni: 0.3% -1.0%, Mo: 1.0% -5.0%, Cu: 1.0% -4.0%, Mn: 0.1% -8%, S: 0.3% -1.2%, Fe: and (4) the balance.
Preferably, the additive also contains P with the mass fraction not more than 4%.
Preferably, the additive also contains O with the mass fraction not more than 4%.
Preferably, P and O with the mass fraction not more than 4 percent are also contained.
Preferably, Mn and S are all added as MnS.
Preferably, the Mn and S moieties are added as MnS.
Preferably, the preparation method of the high-performance powder metallurgy valve guide material comprises the following steps:
(1) uniformly mixing the raw material powder according to the proportion;
(2) pressing and molding the mixed powder on a press;
(3) sintering the formed blank at high temperature in a sintering furnace;
(4) carrying out vacuum oil immersion treatment on the sintered product;
(5) and machining to obtain the finished product.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the invention, a plurality of element raw materials are used for replacing pure iron powder, so that the wear resistance of the whole matrix is improved, and meanwhile, Ni, Mo, Cu, Mn and Fe alloy particles are added for dispersion strengthening, and the alloy particles are used as a wear-resistant phase to improve the wear resistance;
2) mn and S are added, and can be completely or partially added into the preparation of the new material in the form of MnS, and the MnS can be used as a solid lubricant to improve the processing performance, improve the self-lubricating performance of the material, improve the abrasion environment and improve the abrasion resistance;
3) the valve guide pipe material effectively improves the wear resistance of the powder metallurgy guide pipe, can deal with the severe working conditions of the engine, simultaneously well improves the processing performance and saves the cost of a cutter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The valve guide material composition in this example is as follows:
element(s) C Ni Mo Cu Mn S Others Fe
The content wt% 1.2 0.6 3.3 2.38 0.4 7 3 Balance of
The others in the above table are P or O or P and O, and Mn and S are all added as MnS. The manufacturing process comprises the following steps: powder mixing → press forming → sintering → vacuum oil immersion treatment
The preparation method of the high-performance powder metallurgy valve guide material comprises the following steps:
(1) uniformly mixing the raw material powder according to the proportion;
(2) pressing and molding the mixed powder on a press;
(3) sintering the formed blank at high temperature in a sintering furnace;
(4) carrying out vacuum oil immersion treatment on the sintered product;
(5) and machining to obtain the finished product.
Example 2
The valve guide material composition of the invention in this example is as follows:
element(s) C Ni Mo Cu Mn S Others Fe
The content wt% 1.4 0.72 2.9 2.62 0.35 0.65 3 Balance of
The others in the table above are P or O or P and O, and Mn and S are all added as MnS, and the valve guide material is prepared in the same manner as in example 1.
Example 3
The valve guide material composition in this example is as follows:
element(s) C Ni Mo Cu Mn S Others Fe
The content wt% 1.3 0.7 3.2 2.85 0.3 0.7 4 Balance of
The others in the table above are P or O or P and O, and Mn and S are all added as MnS, and the valve guide material is prepared in the same manner as in example 1.
The valve guide reference material 5520 was used as a control, and the wear resistance test and the workability test were conducted in the control and examples 1 to 3 under the conditions of a temperature of 300 ℃ and a number of revolutions of 2500rpm for a test time of 10 hours in an abrasion tester. The results of the abrasion resistance test are shown in the following table:
valve guide material Valve guide wear mm Valve wear capacity mm Total wear rate mm
Reference material 5520 0.053 0.010 0.063
Example 1 materials 0.023 0.005 0.028
Example 2 materials 0.025 0.004 0.029
Example 3 materials 0.025 0.005 0.030
The test conditions for the processability test are as follows: CBN cutter, revolution 2000rpm, feed 0.1 mm/r. The results of the workability tests are shown in the following table:
Figure BDA0003144547910000031
Figure BDA0003144547910000041
according to test data, the valve guide pipe material obtained in the embodiments 1-3 of the invention effectively improves the wear resistance of the powder metallurgy guide pipe, and can cope with severe engine working conditions. As can be seen from the machinability test, the invention improves the wear resistance of the material, and simultaneously, the quantity of the material which can be machined by the same cutter is in the same order of magnitude as the quantity of the traditional material which can be machined by the same cutter, therefore, the invention does not influence the machining performance and saves the cutter cost.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.

Claims (7)

1. The high-performance powder metallurgy valve guide pipe material is characterized by comprising the following element raw materials in parts by mass: c: 0.9% -1.8%, Ni: 0.3% -1.0%, Mo: 1.0% -5.0%, Cu: 1.0% -4.0%, Mn: 0.1% -8%, S: 0.3% -1.2%, Fe: and (4) the balance.
2. The high performance powder metallurgy valve guide material of claim 1, wherein: also contains P with the mass fraction not more than 4 percent.
3. The high performance powder metallurgy valve guide material of claim 1, wherein: and O with the mass fraction not more than 4 percent.
4. The high performance powder metallurgy valve guide material of claim 1, wherein: also contains P and O with the mass fraction not more than 4 percent.
5. The high performance powder metallurgy valve guide material of claim 1, wherein: mn and S are all added as MnS.
6. The high performance powder metallurgy valve guide material of claim 1, wherein: the Mn and S moieties are added as MnS.
7. The method for preparing the high-performance powder metallurgy valve guide material according to any one of claims 1 to 6, wherein the method comprises the following steps of:
(1) uniformly mixing the raw material powder according to the proportion;
(2) pressing and molding the mixed powder on a press;
(3) sintering the formed blank at high temperature in a sintering furnace;
(4) carrying out vacuum oil immersion treatment on the sintered product;
(5) and machining to obtain the finished product.
CN202110746694.3A 2021-07-02 2021-07-02 High-performance powder metallurgy valve guide pipe material Pending CN113564491A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN202110746694.3A CN113564491A (en) 2021-07-02 2021-07-02 High-performance powder metallurgy valve guide pipe material

Publications (1)

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CN113564491A true CN113564491A (en) 2021-10-29

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Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1580689A (en) * 1976-01-02 1980-12-03 Brico Eng Valve seat inserts of sintered metal
WO2001049436A2 (en) * 2000-01-06 2001-07-12 Bleistahl-Produktions Gmbh & Co. Kg Powder metallurgy produced press-sinter shaped part
JP2006307331A (en) * 2005-03-29 2006-11-09 Hitachi Powdered Metals Co Ltd Wear-resistant sintered member and producing method therefor
CN102102161A (en) * 2009-12-21 2011-06-22 日立粉末冶金株式会社 Sintered valve guide and a method of making a sintered valve guide
CN102189262A (en) * 2011-04-26 2011-09-21 常熟市双月机械有限公司 Valve guide pipe
CN102994917A (en) * 2012-12-11 2013-03-27 奇瑞汽车股份有限公司 Alloy material, valve retainer, and preparation method and installation method thereof
CN103526134A (en) * 2013-10-18 2014-01-22 安庆帝伯粉末冶金有限公司 High-performance powder metallurgy valve retainer material
CN106191695A (en) * 2016-07-10 2016-12-07 程叙毅 A kind of antiwear heat resisting alloy material and preparation method
CN106191668A (en) * 2016-07-10 2016-12-07 程叙毅 A kind of exhaust valve seat loop material and preparation method
CN107175333A (en) * 2017-04-10 2017-09-19 安徽白兔湖粉末冶金有限公司 High-performance powder smelting inlet valve seat ring and preparation method thereof
CN107245670A (en) * 2017-05-22 2017-10-13 东风汽车零部件（集团）有限公司东风粉末冶金公司 A kind of Diesel engine valve guide bushing material
CN107338398A (en) * 2017-05-26 2017-11-10 安徽白兔湖粉末冶金有限公司 High temperature wear resistant valve guide bushing and preparation method thereof
CN107750302A (en) * 2015-06-16 2018-03-02 布莱史塔生产有限两合公司 Valve guide bushing
CN110747406A (en) * 2018-07-23 2020-02-04 安徽金亿新材料股份有限公司 Rare earth powder metallurgy natural gas engine valve guide pipe and preparation method thereof
CN111788025A (en) * 2018-02-23 2020-10-16 日立化成株式会社 Sintered valve guide and method for manufacturing same
CN113046650A (en) * 2021-02-07 2021-06-29 浙江吉利控股集团有限公司 Valve guide pipe material and preparation method of valve guide pipe

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1580689A (en) * 1976-01-02 1980-12-03 Brico Eng Valve seat inserts of sintered metal
WO2001049436A2 (en) * 2000-01-06 2001-07-12 Bleistahl-Produktions Gmbh & Co. Kg Powder metallurgy produced press-sinter shaped part
JP2006307331A (en) * 2005-03-29 2006-11-09 Hitachi Powdered Metals Co Ltd Wear-resistant sintered member and producing method therefor
CN102102161A (en) * 2009-12-21 2011-06-22 日立粉末冶金株式会社 Sintered valve guide and a method of making a sintered valve guide
CN102189262A (en) * 2011-04-26 2011-09-21 常熟市双月机械有限公司 Valve guide pipe
CN102994917A (en) * 2012-12-11 2013-03-27 奇瑞汽车股份有限公司 Alloy material, valve retainer, and preparation method and installation method thereof
CN103526134A (en) * 2013-10-18 2014-01-22 安庆帝伯粉末冶金有限公司 High-performance powder metallurgy valve retainer material
CN107750302A (en) * 2015-06-16 2018-03-02 布莱史塔生产有限两合公司 Valve guide bushing
CN106191668A (en) * 2016-07-10 2016-12-07 程叙毅 A kind of exhaust valve seat loop material and preparation method
CN106191695A (en) * 2016-07-10 2016-12-07 程叙毅 A kind of antiwear heat resisting alloy material and preparation method
CN107175333A (en) * 2017-04-10 2017-09-19 安徽白兔湖粉末冶金有限公司 High-performance powder smelting inlet valve seat ring and preparation method thereof
CN107245670A (en) * 2017-05-22 2017-10-13 东风汽车零部件（集团）有限公司东风粉末冶金公司 A kind of Diesel engine valve guide bushing material
CN107338398A (en) * 2017-05-26 2017-11-10 安徽白兔湖粉末冶金有限公司 High temperature wear resistant valve guide bushing and preparation method thereof
CN111788025A (en) * 2018-02-23 2020-10-16 日立化成株式会社 Sintered valve guide and method for manufacturing same
CN110747406A (en) * 2018-07-23 2020-02-04 安徽金亿新材料股份有限公司 Rare earth powder metallurgy natural gas engine valve guide pipe and preparation method thereof
CN113046650A (en) * 2021-02-07 2021-06-29 浙江吉利控股集团有限公司 Valve guide pipe material and preparation method of valve guide pipe

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