CN105234390A - Material stirring method for powder metallurgy - Google Patents
Material stirring method for powder metallurgy Download PDFInfo
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- CN105234390A CN105234390A CN201510679504.5A CN201510679504A CN105234390A CN 105234390 A CN105234390 A CN 105234390A CN 201510679504 A CN201510679504 A CN 201510679504A CN 105234390 A CN105234390 A CN 105234390A
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Abstract
The invention discloses a material stirring method for powder metallurgy. The material stirring method includes the following steps that firstly, copper powder is weighed according to a specified ratio and is equally divided into multiple parts to be contained in a spacious container; secondly, an additive is equally divided into parts equal to the parts of the copper powder and are added into the copper powder respectively, and the powder of all sets is roughly stirred through a shovel, wherein the additive comprises, by mass ratio, 10-20% of electrolytic copper powder, 0.2-2% of graphite powder, 0-2% of lead powder and 0.3-1% of zinc stearate; thirdly, all sets of powder roughly stirred are poured into a mixer to be mixed; fourthly, the powder is discharged from the mixer and is screened through a 100-mesh screen; and fifthly, the screened powder is poured into the mixer again to be mixed for 20 minutes. According to the material stirring method, the powder can be fully mixed, the quality problem that the hardness, sizes and strength testing values of products in the same batch are large in discreteness and the like due to segregation of raw materials is effectively solved, and therefore the quality of products is greatly improved.
Description
Technical field
The present invention relates to field of powder metallurgy, specifically a kind of method of mixing material of powder metallurgy.
Background technology
The powder metallurgical technique of one of means to be manufactured as Modern Heavy, because having high efficiency, low cost and stock utilization advantages of higher, obtaining in the industrial production and applying more and more widely.
In sintered metal product, market share amount is maximum, what purposes was the widest is iron-base products, the raw material that iron-base products adopts is except principal component copper powder, usually also some additives to be added, as graphite powder, alloyed powder, lubricant powder etc., but be that the problem that the powder of primary raw material produces obvious segregation after spice but exists in Powder Metallurgy Industry always with copper powder, the component segregation of material powder brings product size unstable easily to compacting and sintering circuit, the quality problems such as hardness fluctuations is large, if these assembling products are in some machine, service life and the stability of whole machine may be had influence on.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of method of mixing material of powder metallurgy, each powder is fully mixed, the quality problem that the hardness of the same batch products that effective solution causes because of raw material segregation, size and strength test value discreteness are large etc., thus improve the quality of product greatly, original spice technique can be avoided long and cause the hot oxidizable phenomenon of powder because directly pouring the incorporation time stirring needs in batch mixer together after first being weighed by each component powder into simultaneously.
The technical solution adopted for the present invention to solve the technical problems is:
A method of mixing material for powder metallurgy, comprises the steps:
A, elder generation weigh up weight according to the specified ratio copper powder, and are divided into some equal portions splendid attires in the container of spaciousness;
B, additive be divided into the equal portions identical with copper powder and join respectively in copper powder, with scoop, each group of powder is slightly mixed, wherein additive comprises the electrolytic copper powder that mass ratio is 10 ~ 20%, mass ratio be 0.2 ~ 2% graphite powder, mass ratio account for 0 ~ 2% lead powder and mass ratio account for 0.3 ~ 1% zinc stearate;
C, each group of powder slightly mixed poured in batch mixer together mix;
D, by powder discharging from batch mixer, and carry out with 100 eye mesh screens process of sieving;
E, the powder having crossed sieve poured in batch mixer again and stirs 20 minutes.
As the improvement of technique scheme, in step c, incorporation time controls at 20 minutes ~ 60 minutes.
As the further improvement of technique scheme, in step b, additive to be mass ratio be 10% electrolytic copper powder, mass ratio is the zinc stearate of the graphite powder 0.8% of 0.7%.
Further, in step b, additive to be mass ratio be 18% electrolytic copper powder, mass ratio be 0.5% graphite powder and mass ratio account for 0.8% zinc stearate.
Further, in step b, additive be graphite powder, mass ratio that mass ratio accounts for 2% account for 2% lead powder and mass ratio account for 0.3% zinc stearate.
Further, described copper powder is mixed by the coated composite powder of 0 ~ 100% mass ratio and 100.23 reduced iron powders of 20 ~ 90% mass ratioes by 663 copper powders of 0 ~ 100% mass ratio, 9010 copper powders of 0 ~ 100% mass ratio.
Preferably, described copper powder is 663 copper powders or 9010 copper powders or coated composite powder.
Further, described copper powder by 663 copper powders of 30% mass ratio and 70% mass ratio 9010 copper powders, form.
The invention has the beneficial effects as follows: the present invention can make each powder fully mix, the quality problem that the hardness of the same batch products that effective solution causes because of raw material segregation, size and strength test value discreteness are large etc., thus improve the quality of product greatly, original spice technique can be avoided long and cause the hot oxidizable phenomenon of powder because directly pouring the incorporation time stirring needs in batch mixer together after first being weighed by each component powder into simultaneously.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further detailed explanation.
The method of mixing material of a kind of powder metallurgy of the present invention, comprises the steps:
A, elder generation weigh up weight according to the specified ratio copper powder, and are divided into some equal portions splendid attires in the container of spaciousness;
B, additive be divided into the equal portions identical with copper powder and join respectively in copper powder, with scoop, each group of powder is slightly mixed, wherein additive comprises the electrolytic copper powder that mass ratio is 10 ~ 20%, mass ratio be 0.2 ~ 2% graphite powder, mass ratio account for 0 ~ 2% lead powder and mass ratio account for 0.3 ~ 1% zinc stearate;
C, each group of powder slightly mixed poured in batch mixer together mix;
D, by powder discharging from batch mixer, and carry out with 100 eye mesh screens process of sieving;
E, the powder having crossed sieve poured in batch mixer again and stirs 20 minutes.
In the present invention, in step c, incorporation time controls at 20 minutes ~ 60 minutes.
In the present invention, described copper powder is mixed by the coated composite powder of 0 ~ 100% mass ratio and 100.23 reduced iron powders of 20 ~ 90% mass ratioes by 663 copper powders of 0 ~ 100% mass ratio, 9010 copper powders of 0 ~ 100% mass ratio.
The composition of copper powder and additive has following embodiment:
After tested, above-described embodiment all can make each powder fully mix, the quality problem that the hardness of the same batch products that effective solution causes because of raw material segregation, size and strength test value discreteness are large etc., thus improve the quality of product greatly, original spice technique can be avoided long and cause the hot oxidizable phenomenon of powder because directly pouring the incorporation time stirring needs in batch mixer together after first being weighed by each component powder into simultaneously.
The above, just preferred embodiment of the present invention, but the present invention is not limited to above-described embodiment, as long as it reaches technique effect of the present invention with any same or similar means, all should fall within protection scope of the present invention.
Claims (8)
1. a method of mixing material for powder metallurgy, is characterized in that, comprises the steps:
A, elder generation weigh up weight according to the specified ratio copper powder, and are divided into some equal portions splendid attires in the container of spaciousness;
B, additive be divided into the equal portions identical with copper powder and join respectively in copper powder, with scoop, each group of powder is slightly mixed, wherein additive comprises the electrolytic copper powder that mass ratio is 10 ~ 20%, mass ratio be 0.2 ~ 2% graphite powder, mass ratio account for 0 ~ 2% lead powder and mass ratio account for 0.3 ~ 1% zinc stearate;
C, each group of powder slightly mixed poured in batch mixer together mix;
D, by powder discharging from batch mixer, and carry out with 100 eye mesh screens process of sieving;
E, the powder having crossed sieve poured in batch mixer again and stirs 20 minutes.
2. the method for mixing material of a kind of powder metallurgy according to claim 1, is characterized in that: in step c, and incorporation time controls at 20 minutes ~ 60 minutes.
3. the method for mixing material of a kind of powder metallurgy according to claim 1 and 2, is characterized in that: in step b, additive to be mass ratio be 10% electrolytic copper powder, mass ratio is the zinc stearate of the graphite powder 0.8% of 0.7%.
4. the method for mixing material of a kind of powder metallurgy according to claim 1 and 2, is characterized in that: in step b, additive to be mass ratio be 18% electrolytic copper powder, mass ratio be 0.5% graphite powder and mass ratio account for 0.8% zinc stearate.
5. the method for mixing material of a kind of powder metallurgy according to claim 1 and 2, is characterized in that: in step b, additive be graphite powder, mass ratio that mass ratio accounts for 2% account for 2% lead powder and mass ratio account for 0.3% zinc stearate.
6. the method for mixing material of a kind of powder metallurgy according to claim 1, is characterized in that: described copper powder is mixed by the coated composite powder of 0 ~ 100% mass ratio and 100.23 reduced iron powders of 20 ~ 90% mass ratioes by 663 copper powders of 0 ~ 100% mass ratio, 9010 copper powders of 0 ~ 100% mass ratio.
7. according to the method for mixing material of a kind of powder metallurgy according to claim 6, it is characterized in that: described copper powder is 663 copper powders or 9010 copper powders or coated composite powder.
8., according to the method for mixing material of a kind of powder metallurgy according to claim 6, it is characterized in that: described copper powder by 663 copper powders of 30% mass ratio and 70% mass ratio 9010 copper powders, form.
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| CN201510679504.5A CN105234390A (en) | 2015-10-20 | 2015-10-20 | Material stirring method for powder metallurgy |
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| CN201510679504.5A CN105234390A (en) | 2015-10-20 | 2015-10-20 | Material stirring method for powder metallurgy |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04350101A (en) * | 1991-05-28 | 1992-12-04 | Kobe Steel Ltd | Mixed powder for powder metallurgy and sintered body thereof |
| US20060222554A1 (en) * | 2005-04-04 | 2006-10-05 | Tajpreet Singh | Diffusion bonded nickel-copper powder metallurgy powder |
| CN101468391A (en) * | 2007-12-28 | 2009-07-01 | 鞍钢重型机械有限责任公司 | Mixing method of iron-based powder for powder metallurgy |
| CN103521757A (en) * | 2013-10-22 | 2014-01-22 | 东南大学 | Powder metallurgy iron copper-based oiliness antifriction material containing rare earth oxides and preparing method |
| CN104759614A (en) * | 2015-01-28 | 2015-07-08 | 安徽恒均粉末冶金科技股份有限公司 | Belt pulley powder metallurgy formulation and process |
| CN104959609A (en) * | 2015-06-05 | 2015-10-07 | 东睦新材料集团股份有限公司 | Preparation method of copper-base powder metallurgy part |
-
2015
- 2015-10-20 CN CN201510679504.5A patent/CN105234390A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04350101A (en) * | 1991-05-28 | 1992-12-04 | Kobe Steel Ltd | Mixed powder for powder metallurgy and sintered body thereof |
| US20060222554A1 (en) * | 2005-04-04 | 2006-10-05 | Tajpreet Singh | Diffusion bonded nickel-copper powder metallurgy powder |
| CN101468391A (en) * | 2007-12-28 | 2009-07-01 | 鞍钢重型机械有限责任公司 | Mixing method of iron-based powder for powder metallurgy |
| CN103521757A (en) * | 2013-10-22 | 2014-01-22 | 东南大学 | Powder metallurgy iron copper-based oiliness antifriction material containing rare earth oxides and preparing method |
| CN104759614A (en) * | 2015-01-28 | 2015-07-08 | 安徽恒均粉末冶金科技股份有限公司 | Belt pulley powder metallurgy formulation and process |
| CN104959609A (en) * | 2015-06-05 | 2015-10-07 | 东睦新材料集团股份有限公司 | Preparation method of copper-base powder metallurgy part |
Non-Patent Citations (1)
| Title |
|---|
| 程继贵: "《第十五届华东五省一市粉末冶金技术交流会论文集》", 31 October 2014, 合肥工业大学出版社 * |
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Application publication date: 20160113 |