CN103752830A - Production method of powder metallurgy thin-wall long rod piece - Google Patents
Production method of powder metallurgy thin-wall long rod piece Download PDFInfo
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- CN103752830A CN103752830A CN201310426176.9A CN201310426176A CN103752830A CN 103752830 A CN103752830 A CN 103752830A CN 201310426176 A CN201310426176 A CN 201310426176A CN 103752830 A CN103752830 A CN 103752830A
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Abstract
The invention relates to a production method of a powder metallurgy thin-wall long rod piece. The production method comprises the following steps: mixing and stirring copper powder, graphite, lubricating agent and reduced iron powder uniformly, and placing the mixed material into a press for pressing into bases, wherein a temperature control system is arranged on the press. At last the pressed bricks are sintered, and put into a water jacket for shaping by cooling after keeping warm. The main component, iron powder, of the material in the production method is reduced iron powder which is low in cost and also high in green-pressing intensity. According to the production method of the powder metallurgy thin-wall long rod piece, the lubricating agent is added, so that the generation of heat is reduced in the pressing process, and the pressing performance of the powder is ensured to be stable; in addition, the temperature control system is arranged on the press, so that various performances of produced product can be ensured.
Description
Technical field
The present invention relates to a kind of manufacture method of thin wall long pole, relate in particular to a kind of manufacture method of powder metallurgy thin wall long pole.
Background technology
Thin wall long pole is the typical products of motorcycle vibration absorber pole socket, owing to being thin wall long pole, its rigidity is poor, in use often easily fracture, and press is in pressing process, due to the friction between the friction between powder and powder and mould, can produce a large amount of heat, and the generation of heat has caused product size extremely unstable, because of the variation along with temperature, the suppression performance of powder is changing, we cannot know the situation of change of its temperature at present, thereby cannot adjust compacting parameter according to the variation of temperature, make compacting its rigidity of part out, intensity and surface quality etc. are not satisfactory.
Summary of the invention
For addressing the above problem, the invention provides a kind of manufacture method of powder metallurgy thin wall long pole, be achieved through the following technical solutions:
(1) batching: by copper powder, graphite, lubricant and reduced iron powder mixing and stirring, the percentage by weight of each component is copper powder 1%-2%, graphite 0.8%-1.0%, lubricant 0.6%-0.8%, and all the other are reduced iron powder.
(2) compressing: the above-mentioned material preparing is placed in press, and press power is 4T/cm
2-4.5T/cm
2, being pressed into base, press is provided with temperature control system.
(3) sintering: the base suppressing is carried out to sintering under 1100 ℃～1120 ℃ conditions, after insulation 25-35 divides, put into water jacket cooling.
Described lubricant is micro mist wax or zinc stearate.
Main part of iron powder in Raw of the present invention selected reduced iron powder, and not only price is low for it, and green strength is high.In the present invention, added the lubricant of reasonable component percentages, can in pressing process, effectively reduce the friction of each friction pair, reduce the generation of heat, guarantee that the suppression performance of powder is stablized, another the present invention is provided with temperature control system on press, can adjust according to the variation of temperature the parameters such as mold temperature or press press power, guarantee part its properties of product stable in pressing process, thereby guarantee that the product properties of producing is guaranteed.
The specific embodiment
Embodiment 1:
The present invention carries out according to the following steps:
(1) batching: by copper powder, graphite, lubricant and reduced iron powder mixing and stirring, the percentage by weight of each component is copper powder 1%, graphite 0.8%, lubricant 0.6%, and all the other are reduced iron powder.
(2) compressing: the above-mentioned material preparing is placed in press, and press power is 4.5T/cm
2, being pressed into base, press is provided with temperature control system.
(3) sintering: the base suppressing is carried out to sintering at 1120 ℃, after being incubated 35 points, put into water jacket cooling.
Described lubricant is micro mist wax.
Embodiment 2
The present invention carries out according to the following steps:
(1) batching: copper powder, graphite, lubricant and reduced iron powder mix and blend are all hooked, and the percentage by weight of each component is copper powder 2%, graphite 1.0%, lubricant 0.8%, and all the other are reduced iron powder.
(2) compressing: the above-mentioned material preparing is placed in press, and press power is 4T/cm2, is pressed into base, and press is provided with temperature control system.
(3) sintering: the base suppressing is carried out to sintering at 1100 ℃, after insulation 25, put into water jacket cooling.Described lubricant is zinc stearate.
Claims (2)
1. the manufacture method of a powder metallurgy thin wall long pole, it is characterized in that, it carries out according to the following steps: batching: by copper powder, graphite, lubricant and reduced iron powder mixing and stirring, the percentage by weight of each component is copper powder 1%-2%, graphite 0.8%-1.0%, lubricant 0.6%-0.8%, and all the other are reduced iron powder; Compressing: the above-mentioned material preparing is placed in press, and press power is 4T/cm
2_ 4.5T/cm
2, being pressed into base, press is provided with temperature control system; Sintering: the base suppressing is carried out to sintering under 1100 ℃～1120 ℃ conditions, after insulation 25-35 divides, put into water jacket cooling forming.
2. the manufacture method of powder metallurgy thin wall long pole according to claim 1, is characterized in that, described lubricant is micro mist wax or zinc stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426176.9A CN103752830A (en) | 2013-09-10 | 2013-09-10 | Production method of powder metallurgy thin-wall long rod piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426176.9A CN103752830A (en) | 2013-09-10 | 2013-09-10 | Production method of powder metallurgy thin-wall long rod piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103752830A true CN103752830A (en) | 2014-04-30 |
Family
ID=50520234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310426176.9A Pending CN103752830A (en) | 2013-09-10 | 2013-09-10 | Production method of powder metallurgy thin-wall long rod piece |
Country Status (1)
| Country | Link |
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| CN (1) | CN103752830A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772699A (en) * | 2014-12-22 | 2016-07-20 | 上海家声汽车零部件有限公司 | Iron base powder metallurgy material formula and molding and sintering process |
| CN107470634A (en) * | 2017-07-28 | 2017-12-15 | 宁波金钟粉末冶金有限公司 | Shock absorber piston |
| WO2023028995A1 (en) * | 2021-09-03 | 2023-03-09 | 江苏恒义工业技术有限公司 | Method for processing short-flow electric automobile battery tray |
-
2013
- 2013-09-10 CN CN201310426176.9A patent/CN103752830A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105772699A (en) * | 2014-12-22 | 2016-07-20 | 上海家声汽车零部件有限公司 | Iron base powder metallurgy material formula and molding and sintering process |
| CN107470634A (en) * | 2017-07-28 | 2017-12-15 | 宁波金钟粉末冶金有限公司 | Shock absorber piston |
| CN107470634B (en) * | 2017-07-28 | 2019-07-26 | 宁波金钟粉末冶金有限公司 | Shock absorber piston |
| WO2023028995A1 (en) * | 2021-09-03 | 2023-03-09 | 江苏恒义工业技术有限公司 | Method for processing short-flow electric automobile battery tray |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140430 |
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| WD01 | Invention patent application deemed withdrawn after publication |