CN105290387A - Method for preparing powder metallurgy composition - Google Patents
Method for preparing powder metallurgy composition Download PDFInfo
- Publication number
- CN105290387A CN105290387A CN201410288522.6A CN201410288522A CN105290387A CN 105290387 A CN105290387 A CN 105290387A CN 201410288522 A CN201410288522 A CN 201410288522A CN 105290387 A CN105290387 A CN 105290387A
- Authority
- CN
- China
- Prior art keywords
- powder
- weight
- iron
- master alloy
- composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a method for preparing a powder metallurgy composition. The powder metallurgy composition is combined with mother alloy powder serving as powder for improving the mechanical performance. It is found that the mechanical performance of a final part which is prepared from the powder metallurgy composition and obtained through sintering and pressing can be improved by adding the mother alloy powder particularly under low sintering temperature. The powder metallurgy composition comprises at least, by weight, about 80% of iron-based metallurgy powder and about 0.10%-20% of mother alloy powder. The mother alloy powder comprises, by weight, about 35% of iron, about 10%-35% of chrome and about 10%-35% of silicon.
Description
Technical field
The present invention relates to preparation Metal Substrate metallurgical powder composition, more specifically, relating to the powder composition of the master alloy powder of the engineering properties comprised for improving compacted part.
Background technology
Iron-based grains is used as the basic material by powder metallurgy process manufacturing structure assembly for a long time.First iron-based grains under high pressure, is molded in a mold to produce the shape expected.After the molding step, compacting or " raw (green) " assembly usually carry out sintering step to give the intensity of assembly necessity.By adding some metallurgical addition agent, as alloying element, a large amount of engineering properties improving the assembly of compacting and sintering.Although due to the convenience simply brought, the shortcoming of this technology causes alloy composite to have uneven texture, and this uneven texture is determined by the thermodynamics of often kind of element and diffusion characteristic.The cost relevant to utilizing normally used metallurgical addition agent is another shortcoming, because it can be increased to the signal portion of all costs of powder composition unfortunately.Therefore, in powder metallurgy industry, interest is all the time, attempts to develop the metallurgical addition agent of less cost such as, to reduce and/or all to replace normally used alloying element, copper or nickel.Another shortcoming using metallurgical alloy additive is that they also can give metallurgical composites less desirable attribute.And when at high temperature sintering, the metallurgical addition agent added based on nickel causes the contraction of less desirable compacted part usually.Powder metallurgy industry seeks minimum contraction, close with the size of compacting tool set as much as possible to ensure the part dimension sintered.
Therefore, in powder metallurgy industry, at present and all there are this needs: develop the amount for reducing various common metallurgical addition agent in metallurgical powder composition or substitute its substitute used all the time.
Summary of the invention
The master alloy powder that metallurgical powder composition of the present invention comprises iron-based powder and is made up of multiple alloying element.Use master alloy powder to replace element additive powder, provide the compacted part with more uniform structure.Therefore, have been found that interpolation master alloy powder can improve the engineering properties of the compacted part prepared from metallurgical powder composition.In one embodiment, metallurgical powder composition comprises at least about the iron-based metallurgical powder of 80 % by weight and the master alloy powder of about 0.10 ~ 20 % by weight.Master alloy powder comprises iron, the chromium of about 0.10 ~ 40 weight and the silicon of about 0.10 ~ about 30 % by weight.The present invention also provides the method preparing metallurgical powder composition, with formed compacting by this composition with the method for metal parts of sintering, and the product prepared in this way. the method preparing sintered part(s) comprises the above-mentioned metallurgical powder of compacting, the composition of sintering compacting.Have been found that and under sintering temperature and low, (such as lower than under 2300 ° of degrees Fahrenheits) character of the assembly of final compacting can be obtained.But, have been found that the character of final pressing assembly will be significantly increased if " life " compacted part sinters at the temperature higher than about 2000 ° of degrees Fahrenheits.
Detailed description of the invention
The present invention relates to the metallurgical powder composition be made up of iron-based powder and the master alloy powder that is made up of multiple alloying element, prepare the method for these compositions, and use these compositions to manufacture the method for compacted part.Use master alloy powder to replace element additive powder, provide the compacted part with more uniform structure.Find, add the engineering properties that master alloy powder improves the part of the compacting prepared by metallurgical powder composition.Metallurgical powder composition comprises: iron-based powder, and it is as key component; With the master alloy powder be made up of multiple alloying element, it is as the alloy powder for improving engineering properties.Metallurgical powder composition of the present invention also optionally comprises other additives known, as adhesive and lubricant.Be such iron powder for substantially pure iron powder of the present invention, it has and is not more than about 1.0 % by weight, is preferably not more than the normal impurities of about 0.5 % by weight.Other iron powder used in the present invention is typical iron sponge powder, as ANCORMH-100 powder.Iron-based powder optionally combines and can improve the machinery of final metal parts or one or more alloying elements of other character.This iron-based powder is the iron powder of the element prealloy such with one or more, is preferably pure iron substantially.The powder of prealloy is prepared like this, and by making the alloying element of iron and expectation melt, then atomized molten thing, the drop be atomized thus is by solidifying to form powder.Iron-based powder is by the water atomization of the usually known routine of those skilled in the art or the atomization of aerosolization technology.With iron powder mix or the example of alloying element of prealloy include, but is not limited to, molybdenum, manganese, magnesium, chromium, silicon, copper, nickel, vanadium, columbium (niobium), carbon, phosphorus, aluminium, and combination.The amount of contained alloying element depends on the character of the final composition of expectation.The iron-based powder of the prealloy containing such alloying element from HoeganaesCorp, can obtain with a part for its ANCORSTEEL powder series.Iron-based powder comprises the alloying element being less than 20 % by weight.Preferably, based on the weight of iron-based powder, iron-based powder comprises and is less than 15 % by weight, more preferably comprises the alloying element being less than 10 % by weight.
Claims (8)
1. prepare a method for powder metallurgical composition, comprising: with the total weight of powder metallurgical composition, the iron-based metallurgical powder of at least 80 % by weight; Wherein this iron-based metallurgical powder comprises the iron of at least 90 % by weight, with with the total weight of powder metallurgical composition, the master alloy powder of 0.10 ~ 20 % by weight, described master alloy powder comprises: with the total weight of master alloy powder, the iron of at least 35 % by weight, the chromium of 10 ~ 35 % by weight, and the silicon of 10 ~ 35 % by weight, the manganese of 10 ~ 30 % by weight.
2. prepare the method for powder metallurgical composition as claimed in claim 1, wherein this master alloy powder comprises the chromium of 20 % by weight, the silicon of 14 % by weight, and the manganese of 20 % by weight.
3. prepare the method for powder metallurgical composition as claimed in claim 1, wherein the weight average particle size of master alloy powder is less than or equal to 11 μm.
4. prepare the method for powder metallurgical composition as claimed in claim 1, wherein the weight average particle size of master alloy powder is less than or equal to 37 μm.
5. prepare the method for powder metallurgical composition as claimed in claim 1, wherein master alloy powder also comprises the manganese of 15 ~ 25 % by weight.
6. prepare the method for powder metallurgical composition as claimed in claim 1, also comprise the carbon of 0.1 ~ 5.0 % by weight.
7. prepare the method for powder metallurgical composition as claimed in claim 1, wherein master alloy powder also comprises the graininess carbon of 0.1 ~ 1.0 % by weight.
8. prepare the method for powder metallurgical composition as claimed in claim 1, wherein master alloy powder is prealloy, and this prealloy comprises the carbon of 0.1 ~ 1.0 % by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288522.6A CN105290387A (en) | 2014-06-24 | 2014-06-24 | Method for preparing powder metallurgy composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288522.6A CN105290387A (en) | 2014-06-24 | 2014-06-24 | Method for preparing powder metallurgy composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105290387A true CN105290387A (en) | 2016-02-03 |
Family
ID=55188583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410288522.6A Pending CN105290387A (en) | 2014-06-24 | 2014-06-24 | Method for preparing powder metallurgy composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105290387A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790734A (en) * | 2017-09-29 | 2018-03-13 | 武汉钢铁有限公司 | A kind of process for preparing powder of stainless steel |
| CN112055629A (en) * | 2018-05-10 | 2020-12-08 | 斯泰克波尔国际金属粉末无限责任公司 | Binder injection and supersolidus sintering of ferrous powder metal components |
-
2014
- 2014-06-24 CN CN201410288522.6A patent/CN105290387A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790734A (en) * | 2017-09-29 | 2018-03-13 | 武汉钢铁有限公司 | A kind of process for preparing powder of stainless steel |
| CN112055629A (en) * | 2018-05-10 | 2020-12-08 | 斯泰克波尔国际金属粉末无限责任公司 | Binder injection and supersolidus sintering of ferrous powder metal components |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106270494B (en) | Nonmagnetic steel product and its powder metallurgically manufacturing method | |
| JP2014031574A (en) | Method of manufacturing powder metallurgy workpiece and powder metallurgy workpiece | |
| CN104213030B (en) | A kind of injection forming alloy powder and the application in automobile gearbox sliding sleeve thereof | |
| KR100852304B1 (en) | Method for making compacted products and iron-based powder comprising lubricant | |
| CN104073723A (en) | Powder metallurgy material for manufacturing high-density part and processing technology thereof | |
| CN105290387A (en) | Method for preparing powder metallurgy composition | |
| CN103602898B (en) | A kind of powder metallurgy automobile shifter of transmission bearing and preparation method thereof | |
| CN105441774A (en) | Ferroboron mold | |
| CN102814500B (en) | Method for manufacturing high-density product with stainless steel powder | |
| CN104220193A (en) | Lubricant system for use in powder metallurgy | |
| CN104294137A (en) | Copper-zinc alloy mold | |
| CN104388740B (en) | Copper-base graphite and sintered zirconium composite material and preparation method thereof | |
| CN102947028A (en) | Compositions and methods for improved dimensional control in ferrous poweder metallurgy applications | |
| CN103600062B (en) | A kind of sintered alloy composite and preparation method thereof | |
| CN110508820B (en) | High-permeability copper infiltrated powder and manufacturing method thereof | |
| CN103602897B (en) | A kind of Powder metallurgy hydraulic pump side plate and preparation method thereof | |
| CN101824565B (en) | Silver powder-containing metallurgic titanium-molybdenum-aluminum-vanadium alloy and preparation method thereof | |
| JP7165696B2 (en) | Use of iron-based prealloy powder for powder metallurgy as raw material powder for manufacturing sintered and forged members, diffusion bonding powder for powder metallurgy, iron-based alloy powder for powder metallurgy, and method for manufacturing sintered and forged members | |
| CN111014688A (en) | Phosphorus-containing copper infiltration agent and preparation method thereof | |
| CN104120326A (en) | Metallurgical powdery high-cobalt iron-based alloy and preparation method thereof | |
| CN111014687A (en) | Nickel-containing copper infiltration agent and preparation method thereof | |
| CN103556072A (en) | Chromium-containing powder metallurgy alloy and preparation method thereof | |
| JPH01219102A (en) | Fe-ni-b alloy powder as additive for sintering and sintering method thereof | |
| CN107130136A (en) | A kind of water atomization manufacture method of copper alloy powder | |
| CN111085678A (en) | Powder metallurgy material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160203 |
|
| WD01 | Invention patent application deemed withdrawn after publication |