CN102950278A - Iron-based low-alloy-steel powder for powder metallurgy and preparation method of iron-based low-alloy-steel powder - Google Patents
Iron-based low-alloy-steel powder for powder metallurgy and preparation method of iron-based low-alloy-steel powder Download PDFInfo
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- CN102950278A CN102950278A CN2011102407589A CN201110240758A CN102950278A CN 102950278 A CN102950278 A CN 102950278A CN 2011102407589 A CN2011102407589 A CN 2011102407589A CN 201110240758 A CN201110240758 A CN 201110240758A CN 102950278 A CN102950278 A CN 102950278A
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Abstract
The invention discloses an iron-based low-alloy-steel powder for powder metallurgy and a preparation method of the iron-based low-alloy-steel powder. The iron-based low-alloy-steel powder for powder metallurgy comprises, by total weight, 0.1-0.85% of graphite, 0.5-1.2% of lubricants, 0.5-4% of alloy powder 8-12 micrometers in grain size and 95-98% of iron powder. The preparation method includes: adding the graphite, the lubricants and the alloy powder into the iron powder with uniform mixing. Compared with the prior art, the iron-based low-alloy-steel powder for powder metallurgy is less in alloy powder content and small in grain size range and has good compactibility. Besides, production cost is lowered while wear of the powder to dies is avoided during sintering of parts, and sufficient diffusivity is further provided, so that the compacted parts prepared by the iron-based low-alloy-steel powder have good mechanical property.
Description
Technical field
The present invention relates to iron-based metallurgical powder and preparation method thereof, relate in particular to a kind of powder used in metallurgy iron-based low alloyed steel powder and preparation method thereof.
Background technology
Powder metallurgy is to make metal dust and metal dust is raw material, uses moulding---and sintering process is made the emerging industry of goods.Have the advantage of few cutting, nothing cutting with powder metallurgic method manufacturing machine structural member, thus energy-conservation, material-saving, have the high advantage of production efficiency, be particularly suitable for producing same shape and the many products of quantity, can greatly reduce production costs; Have simultaneously the multifarious characteristics of material, can satisfy the requirement of different purposes constitutional details.
Low alloyed steel powder design of alloy and organizational controls are the focuses of current powdered metallurgical material research and development at present.Domestic production high-strength iron based structures spare generally is to adopt to contain molybdenum, nickel, the prealloy powder of copper, partially pre-alloying powder and mixed powder.Now along with nickel, the rise of copper metal material price, Powder Metallurgy Industry chromium, the alloying element of the steel alloy of manganese conduct is widely studied and applied.And chromium and manganese are higher than nickel as hardness property, and the meaning part will reach the chromium that the same hardness effect is added, and manganese element lacks than nickel.Mainly contain at present dual mode with chromium, the alloying elements such as manganese add to and form powdered alloy steel in the iron.
A kind of is that mode by prealloy is with chromium, the alloying elements such as manganese and iron form powdered alloy steel together, the advantage of this mode is that alloy extent is good, but owing to contain the briquettability that chromium and manganese will reduce powder in the prealloy powder, obtaining highdensity powdered metal parts just needs larger pressing pressure, and the part for high-end complex geometry just is difficult to compacting especially.
Another kind of adding chromium exactly in iron powder exactly, molybdenum, v element can improve the intensity of final products and hardness and the briquettability that does not affect powder is arranged, particularly to needing the product through heat treatment process behind the sintering.The low alloyed steel powder of producing in this way simultaneously, its product has larger price advantage, and can be according to different product application requirements by selecting the different content of one or more alloying elements controls to prepare out the powder body material of different performance with the powder used in metallurgy low alloyed steel powder of such method production.But the chromium that adds, the powder of the alloying element of manganese need to be controlled their size distribution and content well, avoid powder to the wearing and tearing of mould, and enough diffusivitys are provided in the part sintering process.
Find by prior art documents: patent name is powder metallurgical composition and preparation method thereof, application number is that 200580010548.3 Chinese invention patent discloses a kind of powder metallurgical composition, it comprises iron-based metallurgical powder and master alloy powder, the iron that comprises at least 35 % by weight in the described master alloy powder, the silicon of the chromium of 1.0～40 % by weight and 15～22 % by weight.This invention has improved from the engineering properties of the compacted part of metallurgical powder composition preparation by adding master alloy powder, yet the higher increase that causes cost of the master alloy powder content of its interpolation, simultaneously, it is not controlled the size distribution of the master alloy powder that adds, can not avoid equally powder to the wearing and tearing of mould, also fail in the part sintering process, to provide enough diffusivitys.
Summary of the invention
Purpose of the present invention be exactly for overcome alloy content in the existing powder used in metallurgy low alloyed steel powder still powder higher and that add have wearing and tearing to mould, and fail in the part sintering process, to provide enough deficiencies such as diffusivity, a kind of powder used in metallurgy iron-based low alloyed steel powder and preparation method thereof is provided.The compacted part of using iron-based low alloyed steel powder of the present invention preparation also has satisfactory mechanical property, the advantage such as cheap in to the wearing and tearing of mould reducing powder.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of powder used in metallurgy iron-based low alloyed steel powder, to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, comprise that the graphite of 0.1～0.85 ﹪, the lubricant of 0.5～1.2 ﹪, the particle diameter of 0.5～4 ﹪ are 8～12 microns alloy powder and the iron powder of 95～98 ﹪.
Preferably, described alloy powder is made by alloy material, and described alloy material is one or more in molybdenum-iron, ferrochrome, the ferromanganese.
Preferably, described alloy material is ferromanganese, and to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described manganese is 0.5～2.0 ﹪, and described graphite is 0.2～0.85 ﹪.
Preferably, described alloy material is ferromanganese and molybdenum-iron, and to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described manganese is 1.0～2.0 ﹪, and described molybdenum is 0～1.0 ﹪, and described graphite is 0.5～0.85 ﹪.
Preferably, described alloy material is ferromanganese, molybdenum-iron and ferrochrome, to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described manganese is 0.5～2.0 ﹪, described chromium is 0.5～1.0 ﹪, and described molybdenum is 0～1.0 ﹪, and described graphite is 0.1～0.6 ﹪.
Preferably, described alloy material is molybdenum-iron and ferrochrome, and to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described chromium is 0.5～2.0 ﹪, and described molybdenum is 0～1.0 ﹪, and described graphite is 0.1～0.6 ﹪.
A kind of according to claim 1 preparation method of described powder used in metallurgy iron-based low alloyed steel powder the steps include: to add described graphite, lubricant and alloy powder in described iron powder, mixes and namely gets described powder used in metallurgy iron-based low alloyed steel powder.
Compared with prior art, beneficial effect of the present invention is as follows: the content of alloy powder is few in the powder used in metallurgy iron-based low alloyed steel powder of the present invention, particle size range is little, the wearing and tearing of powder to mould when reducing production costs, in the part sintering process, have been avoided, enough diffusivitys also are provided, have good engineering properties so that use the compacted part that iron-based low alloyed steel powder of the present invention prepares.
The specific embodiment
The present invention will be described in detail below in conjunction with specific embodiment.
Alloy powder preparation technology is as follows among the present invention:
| Title | Chemical formula | The weight percent content of nonferrous metal |
| Ferromanganese | FeMn | >75% |
| Ferrochrome | FeCr | >60% |
| Molybdenum-iron | FeMo | >60% |
| Vanadium iron | FeV | >50% |
Add chromium, molybdenum, v element can strengthen the intensity of final part, particularly to carrying out heat treated product behind the sintering; Interpolation manganese also can strengthen the intensity of final products, particularly for the part that does not need to heat-treat, because manganese has 4 times to the ferrite intensity of nickel.
It is 8～12 microns powder that above-mentioned selected alloy material is made particle diameter.
Embodiment 1～15
(1) mixed powder.
By the above-mentioned alloy powder preparation technology requirement molybdenum-iron powder of having milled, ferrochrome powder and ferromanganese powder, select wherein partly or entirely, add that graphite and lubricant sneak in the iron powder, mix forming the iron-based low alloyed steel powder.It is as shown in the table that the composition of alloy powder and alloy powder, graphite, lubricant, matrix iron powder account for respectively the percentage by weight of gross weight, and wherein Fe is the iron in the alloy powder.
(2) compacting and sintering:
This above-mentioned each iron-based low-alloy steel powder that makes is pressed into needed part with certain press and gives birth to embryo, puts into high temperature reduction atmosphere sintering furnace (90% nitrogen, 10 hydrogen) again and carries out high temperature sintering formation powdered metal parts.It is as shown in the table that the powdered metal parts that makes is carried out measuring mechanical property, can find out: the part that can make the needed different performance of different application by adding different alloying elements and ratio.
Claims (7)
1. powder used in metallurgy iron-based low alloyed steel powder, it is characterized in that: to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, comprise that the graphite of 0.1～0.85 ﹪, the lubricant of 0.5～1.2 ﹪, the particle diameter of 0.5～4 ﹪ are 8～12 microns alloy powder and the iron powder of 95～98 ﹪.
2. powder used in metallurgy iron-based low alloyed steel powder according to claim 1 is characterized in that described alloy powder is made by alloy material, and described alloy material is one or more in molybdenum-iron, ferrochrome, the ferromanganese.
3. described powder used in metallurgy iron-based low alloyed steel powder according to claim 2, it is characterized in that described alloy material is ferromanganese, to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described manganese is 0.5～2.0 ﹪, and described graphite is 0.2～0.85 ﹪.
4. described powder used in metallurgy iron-based low alloyed steel powder according to claim 2, it is characterized in that, described alloy material is ferromanganese and molybdenum-iron, to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described manganese is 1.0～2.0 ﹪, described molybdenum is 0～1.0 ﹪, and described graphite is 0.5～0.85 ﹪.
5. described powder used in metallurgy iron-based low alloyed steel powder according to claim 2, it is characterized in that, described alloy material is ferromanganese, molybdenum-iron and ferrochrome, to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described manganese is 0.5～2.0 ﹪, described chromium is 0.5～1.0 ﹪, and described molybdenum is 0～1.0 ﹪, and described graphite is 0.1～0.6 ﹪.
6. described powder used in metallurgy iron-based low alloyed steel powder according to claim 2, it is characterized in that, described alloy material is molybdenum-iron and ferrochrome, to account for the weight percent meter of described powder used in metallurgy iron-based low alloyed steel powder gross weight, described chromium is 0.5～2.0 ﹪, described molybdenum is 0～1.0 ﹪, and described graphite is 0.1～0.6 ﹪.
7. preparation method of described powder used in metallurgy iron-based low alloyed steel powder according to claim 1, it is characterized in that, described preparation method's step is: add described graphite, lubricant and alloy powder in described iron powder, mix and namely get described powder used in metallurgy iron-based low alloyed steel powder.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825541A (en) * | 2016-12-26 | 2017-06-13 | 有研粉末新材料（北京）有限公司 | A kind of preparation method of bond powders |
| CN110234448A (en) * | 2017-02-02 | 2019-09-13 | 杰富意钢铁株式会社 | The manufacturing method of powder used in metallurgy mixed powder, sintered body and sintered body |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0751721B2 (en) * | 1985-06-25 | 1995-06-05 | トヨタ自動車株式会社 | Low alloy iron powder for sintering |
| CN1319678A (en) * | 2001-02-20 | 2001-10-31 | 华南理工大学 | Adhesive free thermal-pressing powder for making high density high-tenacity powder metallurgical parts |
| CN1621551A (en) * | 2003-11-26 | 2005-06-01 | 精工爱普生株式会社 | Raw or granulated powder for sintering, and their sintered compacts |
| CN1839006A (en) * | 2004-04-22 | 2006-09-27 | 杰富意钢铁株式会社 | Mixed powder for powder metallurgy |
| CN101486098A (en) * | 2008-01-17 | 2009-07-22 | 东睦新材料集团股份有限公司 | Method for preparing high-hardness wear-resistant powder metallurgical rolling sleeve |
-
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0751721B2 (en) * | 1985-06-25 | 1995-06-05 | トヨタ自動車株式会社 | Low alloy iron powder for sintering |
| CN1319678A (en) * | 2001-02-20 | 2001-10-31 | 华南理工大学 | Adhesive free thermal-pressing powder for making high density high-tenacity powder metallurgical parts |
| CN1621551A (en) * | 2003-11-26 | 2005-06-01 | 精工爱普生株式会社 | Raw or granulated powder for sintering, and their sintered compacts |
| CN1839006A (en) * | 2004-04-22 | 2006-09-27 | 杰富意钢铁株式会社 | Mixed powder for powder metallurgy |
| CN101486098A (en) * | 2008-01-17 | 2009-07-22 | 东睦新材料集团股份有限公司 | Method for preparing high-hardness wear-resistant powder metallurgical rolling sleeve |
Non-Patent Citations (1)
| Title |
|---|
| 徐成章: "粉末冶金特殊材料的最近动向", 《粉末冶金技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825541A (en) * | 2016-12-26 | 2017-06-13 | 有研粉末新材料（北京）有限公司 | A kind of preparation method of bond powders |
| CN110234448A (en) * | 2017-02-02 | 2019-09-13 | 杰富意钢铁株式会社 | The manufacturing method of powder used in metallurgy mixed powder, sintered body and sintered body |
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Application publication date: 20130306 |