CN104384499A - Powder metallurgy composite material and preparation method thereof - Google Patents
Powder metallurgy composite material and preparation method thereof Download PDFInfo
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- CN104384499A CN104384499A CN201410587866.7A CN201410587866A CN104384499A CN 104384499 A CN104384499 A CN 104384499A CN 201410587866 A CN201410587866 A CN 201410587866A CN 104384499 A CN104384499 A CN 104384499A
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Abstract
The invention discloses a powder metallurgy composite material and a preparation method thereof. The composite material is prepared from the following raw materials in parts by weight: 4-10 parts of graphite, 3-5 parts of boric oxide, 10-20 parts of aluminum oxide, 15-25 parts of zinc oxide, 4-8 parts of silicon dioxide, 5-8 parts of titanium dioxide, 4-6 parts of stearic acid, 35-50 parts of iron powder and 40-55 parts of copper powder; the preparation method comprises the following steps: a, performing ball milling by a mill; b, crushing and screening; c, compacting; d, sintering to obtain the powder metallurgy composite material. The powder metallurgy composite material prepared by the preparation method disclosed by the invention is better in all indexes of tensile strength, compressive strength, hardness and wear rate, high in integration, easy to demould after compacting, and excellent in comprehensive performance.
Description
Technical field
The present invention relates to metal material, metallurgical technology field, particularly a kind of composite powder metallurgy material and preparation method thereof.
Background technology
Powder metallurgy is a kind of is raw material with metal dust, and repressed and sintering makes the processing method of various goods.The internal advantage of powdered metal parts production technology is, has Quick-forming ability and the material high usage of complex parts.
Powder metallurgy structural part product material composition does not limit by melting, and adjusts as requested in sizable scope, and then can reach the effect of mating with steel part in mechanical property.
The raw material of powder metallurgy are metal dust, and metal dust mainly resolves into fine particle by various raw metal and mixes the powder formed.Because powder metallurgy is different with the technique of casting, metal dust is often difficult to good fusion, even demoulding difficulty after pressed compact, particularly when production part labyrinth part, and the performance of material is not very good yet, need further study and improve.
Summary of the invention
The object of the invention is to provide that a kind of amalgamation is good to overcome above the deficiencies in the prior art, the easily demoulding after pressed compact, excellent material performance composite powder metallurgy material and preparation method thereof.
A kind of composite powder metallurgy material of the present invention is made up of the raw material of following parts by weight: graphite 4-10 part, boron oxide 3-5 part, aluminium oxide 10-20 part, zinc oxide 15-25 part, silica 4-8 part, titanium dioxide 5-8 part, stearic acid 4-6 part, iron powder 35-50 part, copper powder 40-55 part.
Preferably, a kind of composite powder metallurgy material is made up of the raw material of following parts by weight: graphite 5-9 part, boron oxide 4-5 part, aluminium oxide 12-18 part, zinc oxide 18-22 part, silica 5-7 part, titanium dioxide 6-7 part, stearic acid 5-6 part, iron powder 40-45 part, copper powder 45-50 part.
Preferred, a kind of composite powder metallurgy material is made up of the raw material of following parts by weight: 8 parts, graphite, boron oxide 4.5 parts, 15 parts, aluminium oxide, 20 parts, zinc oxide, silica 6 parts, titanium dioxide 6.5 parts, stearic acid 5.5 parts, iron powder 43 parts, copper powder 48 parts.
A preparation method for composite powder metallurgy material, comprises the following steps:
A, by boron oxide, aluminium oxide, zinc oxide, iron powder and copper powder mix, carry out ball milling with ball mill, obtain 200-300 order powder, then carry out spraying dry, oven dry;
B, dried powder is pressed into bulk under 5-8Mpa pressure condition, then under nitrogen protection condition 800-850 DEG C of sintering 6-7 hour, then the crushing material after sintering is crossed 150-200 mesh sieve;
C, silica, titanium dioxide and stearic acid to be added in material that step b obtains, load mould after stirring, be pressed into base;
D, pressed compact is first sintered 2-3 hour under 400-500 DEG C of condition, then sinter 2.5-3 hour under 700-800 DEG C of condition, finally under 970-1070 DEG C of condition, sinter 3-4 hour, be then cooled to room temperature and namely obtain composite powder metallurgy material.
Preferably, described in step b by sintering after crushing material cross 150 mesh sieves.
Preferably, last described in steps d sinters 3.5 hours under 1020 DEG C of conditions.
Beneficial effect:
1, the tensile strength of the composite powder metallurgy material prepared of the present invention, compression strength, hardness and wear rate indices are all better, and amalgamation is good, the easily demoulding after pressed compact, material excellent combination property.
2, preparation method of the present invention is applied widely, energy-and time-economizing, and cost is low.
Detailed description of the invention
Embodiment 1
A kind of composite powder metallurgy material is made up of the raw material of following parts by weight: 4 parts, graphite, boron oxide 3 parts, 10 parts, aluminium oxide, 15 parts, zinc oxide, silica 4 parts, titanium dioxide 5 parts, stearic acid 4 parts, iron powder 35 parts, copper powder 40 parts.
A preparation method for composite powder metallurgy material, comprises the following steps:
A, by boron oxide, aluminium oxide, zinc oxide, iron powder and copper powder mix, carry out ball milling with ball mill, obtain 200 order powder, then carry out spraying dry, oven dry;
B, dried powder is pressed into bulk under 5Mpa pressure condition, then in lower 800 DEG C of sintering of nitrogen protection condition 6 hours, then the crushing material after sintering is crossed 150 mesh sieves;
C, silica, titanium dioxide and stearic acid to be added in material that step b obtains, load mould after stirring, be pressed into base;
D, pressed compact is first sintered 2 hours under 400 DEG C of conditions, then sinter 2.5 hours under 700 DEG C of conditions, finally under 970 DEG C of conditions, sinter 3 hours, be then cooled to room temperature and namely obtain composite powder metallurgy material.
Embodiment 2
A kind of composite powder metallurgy material is made up of the raw material of following parts by weight: 5 parts, graphite, boron oxide 4 parts, 12 parts, aluminium oxide, 18 parts, zinc oxide, silica 5 parts, titanium dioxide 6 parts, stearic acid 5 parts, iron powder 40 parts, copper powder 45 parts.
A preparation method for composite powder metallurgy material, comprises the following steps:
A, by boron oxide, aluminium oxide, zinc oxide, iron powder and copper powder mix, carry out ball milling with ball mill, obtain 300 order powder, then carry out spraying dry, oven dry;
B, dried powder is pressed into bulk under 6Mpa pressure condition, then in lower 850 DEG C of sintering of nitrogen protection condition 7 hours, then the crushing material after sintering is crossed 200 mesh sieves;
C, silica, titanium dioxide and stearic acid to be added in material that step b obtains, load mould after stirring, be pressed into base;
D, pressed compact is first sintered 3 hours under 500 DEG C of conditions, then sinter 3 hours under 800 DEG C of conditions, finally under 1070 DEG C of conditions, sinter 4 hours, be then cooled to room temperature and namely obtain composite powder metallurgy material.
Embodiment 3
A kind of composite powder metallurgy material is made up of the raw material of following parts by weight: 9 parts, graphite, boron oxide 5 parts, 18 parts, aluminium oxide, 22 parts, zinc oxide, silica 7 parts, titanium dioxide 7 parts, stearic acid 6 parts, iron powder 45 parts, copper powder 50 parts.
A preparation method for composite powder metallurgy material, comprises the following steps:
A, by boron oxide, aluminium oxide, zinc oxide, iron powder and copper powder mix, carry out ball milling with ball mill, obtain 300 order powder, then carry out spraying dry, oven dry;
B, dried powder is pressed into bulk under 7Mpa pressure condition, then in lower 800 DEG C of sintering of nitrogen protection condition 7 hours, then the crushing material after sintering is crossed 200 mesh sieves;
C, silica, titanium dioxide and stearic acid to be added in material that step b obtains, load mould after stirring, be pressed into base;
D, pressed compact is first sintered 3 hours under 450 DEG C of conditions, then sinter 3 hours under 740 DEG C of conditions, finally under 1000 DEG C of conditions, sinter 3 hours, be then cooled to room temperature and namely obtain composite powder metallurgy material.
Embodiment 4
A kind of composite powder metallurgy material is made up of the raw material of following parts by weight: 8 parts, graphite, boron oxide 4.5 parts, 15 parts, aluminium oxide, 20 parts, zinc oxide, silica 6 parts, titanium dioxide 6.5 parts, stearic acid 5.5 parts, iron powder 43 parts, copper powder 48 parts.
A preparation method for composite powder metallurgy material, comprises the following steps:
A, by boron oxide, aluminium oxide, zinc oxide, iron powder and copper powder mix, carry out ball milling with ball mill, obtain 200 order powder, then carry out spraying dry, oven dry;
B, dried powder is pressed into bulk under 8Mpa pressure condition, then in lower 810 DEG C of sintering of nitrogen protection condition 6.5 hours, then the crushing material after sintering is crossed 150 mesh sieves;
C, silica, titanium dioxide and stearic acid to be added in material that step b obtains, load mould after stirring, be pressed into base;
D, pressed compact is first sintered 2.5 hours under 470 DEG C of conditions, then sinter 3 hours under 760 DEG C of conditions, finally under 1020 DEG C of conditions, sinter 3.5 hours, be then cooled to room temperature and namely obtain composite powder metallurgy material.
The composite powder metallurgy material prepared by above-described embodiment carries out performance test, and the performance test results is as shown in table 1.
Table 1
From table 1 test result, the tensile strength of composite powder metallurgy material prepared by above embodiment, compression strength, hardness and wear rate indices are all better, and the easily demoulding after, pressed compact good by the amalgamation of the known material of above-mentioned test, material excellent combination property.
Claims (6)
1. a composite powder metallurgy material, is characterized in that being made up of the raw material of following parts by weight: graphite 4-10 part, boron oxide 3-5 part, aluminium oxide 10-20 part, zinc oxide 15-25 part, silica 4-8 part, titanium dioxide 5-8 part, stearic acid 4-6 part, iron powder 35-50 part, copper powder 40-55 part.
2. a kind of composite powder metallurgy material according to claim 1, is characterized in that being made up of the raw material of following parts by weight: graphite 5-9 part, boron oxide 4-5 part, aluminium oxide 12-18 part, zinc oxide 18-22 part, silica 5-7 part, titanium dioxide 6-7 part, stearic acid 5-6 part, iron powder 40-45 part, copper powder 45-50 part.
3. a kind of composite powder metallurgy material according to claim 1, is characterized in that being made up of the raw material of following parts by weight: 8 parts, graphite, boron oxide 4.5 parts, 15 parts, aluminium oxide, 20 parts, zinc oxide, silica 6 parts, titanium dioxide 6.5 parts, stearic acid 5.5 parts, iron powder 43 parts, copper powder 48 parts.
4. a preparation method for the composite powder metallurgy material as described in any one of claims 1 to 3, is characterized in that comprising the following steps:
A, by boron oxide, aluminium oxide, zinc oxide, iron powder and copper powder mix, carry out ball milling with ball mill, obtain 200-300 order powder, then carry out spraying dry, oven dry;
B, dried powder is pressed into bulk under 5-8Mpa pressure condition, then under nitrogen protection condition 800-850 DEG C of sintering 6-7 hour, then the crushing material after sintering is crossed 150-200 mesh sieve;
C, silica, titanium dioxide and stearic acid to be added in material that step b obtains, load mould after stirring, be pressed into base;
D, pressed compact is first sintered 2-3 hour under 400-500 DEG C of condition, then sinter 2.5-3 hour under 700-800 DEG C of condition, finally under 970-1070 DEG C of condition, sinter 3-4 hour, be then cooled to room temperature and namely obtain composite powder metallurgy material.
5. the preparation method of a kind of composite powder metallurgy material according to claim 4, it is characterized in that described in step b by sintering after crushing material cross 150 mesh sieves.
6. the preparation method of a kind of composite powder metallurgy material according to claim 4, is characterized in that last described in steps d sinters 3.5 hours under 1020 DEG C of conditions.
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Cited By (6)
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| CN104831099A (en) * | 2015-04-07 | 2015-08-12 | 苏州阿罗米科技有限公司 | Preparation method of aluminum-carbon composite material |
| CN105154797A (en) * | 2015-08-31 | 2015-12-16 | 苏州莱特复合材料有限公司 | Glass fiber reinforcement aluminum matrix composite material and preparation method thereof |
| CN105154712A (en) * | 2015-08-31 | 2015-12-16 | 苏州莱特复合材料有限公司 | Aluminum-magnesium blend copper-based powder metallurgy composite material and preparation method thereof |
| CN105624478A (en) * | 2016-02-29 | 2016-06-01 | 苏州莱特复合材料有限公司 | Magnesium stearate reinforced aluminum matrix composite and preparation method thereof |
| CN106381435A (en) * | 2016-08-30 | 2017-02-08 | 温州先临左岸工业设计有限公司 | 3D printing composite powder and preparation method thereof |
| CN108176294A (en) * | 2018-03-04 | 2018-06-19 | 华北理工大学 | A kind of powder metallurgy milling and feed device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104831099A (en) * | 2015-04-07 | 2015-08-12 | 苏州阿罗米科技有限公司 | Preparation method of aluminum-carbon composite material |
| CN105154797A (en) * | 2015-08-31 | 2015-12-16 | 苏州莱特复合材料有限公司 | Glass fiber reinforcement aluminum matrix composite material and preparation method thereof |
| CN105154712A (en) * | 2015-08-31 | 2015-12-16 | 苏州莱特复合材料有限公司 | Aluminum-magnesium blend copper-based powder metallurgy composite material and preparation method thereof |
| CN105624478A (en) * | 2016-02-29 | 2016-06-01 | 苏州莱特复合材料有限公司 | Magnesium stearate reinforced aluminum matrix composite and preparation method thereof |
| CN106381435A (en) * | 2016-08-30 | 2017-02-08 | 温州先临左岸工业设计有限公司 | 3D printing composite powder and preparation method thereof |
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| CN108176294A (en) * | 2018-03-04 | 2018-06-19 | 华北理工大学 | A kind of powder metallurgy milling and feed device |
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Application publication date: 20150304 |