CN103752826A - Technique for manufacturing powder metallurgy plunger pump cylinder blank - Google Patents
Technique for manufacturing powder metallurgy plunger pump cylinder blank Download PDFInfo
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- CN103752826A CN103752826A CN201310425975.4A CN201310425975A CN103752826A CN 103752826 A CN103752826 A CN 103752826A CN 201310425975 A CN201310425975 A CN 201310425975A CN 103752826 A CN103752826 A CN 103752826A
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- plunger pump
- pump cylinder
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- green compact
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Abstract
The invention discloses a technique for manufacturing a powder metallurgy plunger pump cylinder blank. The technique for manufacturing the powder metallurgy plunger pump cylinder blank is used for manufacturing the cylinder blank of the plunger pump. The powder metallurgy material comprises iron, carbon and copper. The technique for manufacturing the powder metallurgy plunger pump cylinder blank comprises a first step of press molding, a second step of sintering and a third step of machining. The manufacturing technique uses powder metallurgy instead of cast iron, so that the technique is capable of molding the cylinder blank with complex shape and high size precision, enables the machining amount to be reduced greatly, and enables the production efficiency to be improved.
Description
Technical field
The present invention relates to machine components and manufacture field, be specifically related to a kind of technique of the metallurgical plunger pump cylinder body blank that makes powder.
Background technology
In the manufacture method of existing plunger pump cylinder body blank, adopting cast iron is blank material.Semifinished product precision out of casting is low like this, and part need just can carry out Precision Machining after multiple operations such as turning, broaching, milling, grinding, and working (machining) efficiency is low, and cost is high.
Summary of the invention
For overcoming deficiency of the prior art, the object of the invention is to propose a kind of technique of the metallurgical plunger pump cylinder body blank that makes powder, this manufacturing process has utilized powder metallurgy to replace cast iron to be applied to the material of such part, there is the complicated shape that can be shaped, technological advantage that dimensional accuracy is high, significantly reduce processing capacity, enhance productivity.
For solving the problems of the technologies described above, reach above-mentioned technical purpose, the present invention adopts following technical scheme:
The make powder technique of metallurgical plunger pump cylinder body blank, its concrete technology step is:
1) compressing: by the method compacted iron carbon green compact of colding pressing and ooze copper green compact;
2) sintering: after oozing copper green compact and the assembling of iron carbon green compact, put into sintering electric furnace sintering, obtain plunger pump cylinder body blank, and with nitrogen protection;
3) machining: the plunger pump cylinder body blank sintering into is carried out to follow-up machined.
Preferably, in described step 1, described iron carbon green compact are processed by titanium valve, carbon dust and lubricant, and constituent is expressed as by weight percentage: iron powder is that 97%-99%, carbon dust are that 0.6%-0.9%, lubricant are 0.8%-1.2%.
Preferably, in described step 2, the described copper green compact that ooze are processed by copper powder, iron powder, carbon dust, zinc, manganese, carbon and lubricant, constituent is expressed as by weight percentage: copper powder is that 95%-98%, iron powder are that 1%-2%, lubricant are 0.2%-0.4%, wherein, the percentage by weight of zinc, manganese, the shared gross weight of carbon is not more than 3.8%.
Preferably, in described step 2, the maximum temperature in described sintering electric furnace is 1121 ℃.
Compared with prior art, the manufacturing process tool of powder metallurgy plunger pump cylinder body blank of the present invention has the following advantages:
1. by the research to powdered metallurgical material, invent the powdered metallurgical material that is applicable to plunger pump cylinder body blank, substitute cast iron that former tradition is applied to such part as material, thereby can be shaped complicated shape, improve dimensional accuracy.
2. powder metallurgy of the present invention is manufactured the process of such blank, and combining powder metallurgy can be shaped complex shape, technological advantage that dimensional accuracy is high, significantly reduce processing capacity, enhances productivity.
The specific embodiment
Embodiment 1:
1) compressing: the iron powder with 98.2%, 0.8% carbon dust and 1% lubricant be by the method compacted iron carbon green compact of colding pressing, the copper with 96.5%, 1.5% iron, 0.3% lubricant and 1.7% zinc, manganese, carbon pressure system are oozed copper green compact;
2) sintering: put into sintering electric furnace sintering after oozing copper green compact and the assembling of iron carbon green compact, with nitrogen protection, high-temperature region temperature is 1121 ℃;
3) machining: carry out follow-up machined after sintering.
Embodiment 2
The make powder technique of metallurgical plunger pump cylinder body blank of another kind of the present invention, concrete steps are:
1) compressing: the iron powder with 98%, 0.8% carbon dust and 1.2% lubricant be by the method compacted iron carbon green compact of colding pressing, the copper with 95%, the iron of 20A, 0.4% lubricant and 3.6% zinc, manganese, carbon pressure system are oozed copper green compact;
2) sintering: put into sintering electric furnace sintering after oozing copper green compact and the assembling of iron carbon green compact, with nitrogen protection, high-temperature region temperature is 1121 ℃;
Embodiment 3
The technique of another metallurgical plunger pump cylinder body blank that makes powder of the present invention, concrete steps are:
1) compressing: the iron powder with 98.6%, 0.6% carbon dust and 0.8% lubricant be by the method compacted iron carbon green compact of colding pressing, the copper with 98%, 1% iron, 0.2% lubricant and 0.8% zinc, manganese, carbon pressure system are oozed copper green compact;
2) sintering: put into sintering electric furnace sintering after oozing copper green compact and the assembling of iron carbon green compact, with nitrogen protection, high-temperature region temperature is 1121 ℃;
3) stool tool processing: carry out follow-up machined after sintering.
The manufacturing process of powder metallurgy plunger pump cylinder body blank of the present invention, on to the Research foundation of powdered metallurgical material, can substituting of the inventing cast iron that tradition is applied to such part is as material, and invent corresponding powder metallurgy and manufacture the process of such blank, combining powder metallurgy can be shaped complicated shape, technological advantage that dimensional accuracy is high, significantly reduce processing capacity, enhance productivity.
Claims (4)
1. the make powder technique of metallurgical plunger pump cylinder body blank, is characterized in that, concrete technology step is: 1) compressing: by the method compacted iron carbon green compact of colding pressing and ooze copper green compact;
2) sintering: after oozing copper green compact and the assembling of iron carbon green compact, put into sintering electric furnace sintering, obtain plunger pump cylinder body blank, and with nitrogen protection;
3) machining: the plunger pump cylinder body blank sintering into is carried out to follow-up machined.
2. the technique of the metallurgical plunger pump cylinder body blank that makes powder as claimed in claim 1, it is characterized in that, in described step 1, described iron carbon green compact are processed by iron powder, carbon dust and lubricant, and constituent is expressed as by weight percentage: iron powder is that 97%-99%, carbon dust are that 0.6%-0.9%, lubricant are 0.8%-1.2%.
3. the technique of the metallurgical plunger pump cylinder body blank that makes powder as claimed in claim 1, it is characterized in that, in described step 2, the described copper green compact that ooze are processed by copper powder, iron powder, carbon dust, zinc, manganese, carbon and lubricant, constituent is expressed as by weight percentage: copper powder is that 95%-98%, iron powder are that 1%-2%, lubricant are 0.2%-0.4%, wherein, the percentage by weight of zinc, manganese, the shared gross weight of carbon is not more than 3.8%.
4. the technique of the metallurgical plunger pump cylinder body blank that makes powder as claimed in claim 1, is characterized in that, in described step 2, the maximum temperature in described sintering electric furnace is 1121 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310425975.4A CN103752826A (en) | 2013-09-10 | 2013-09-10 | Technique for manufacturing powder metallurgy plunger pump cylinder blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310425975.4A CN103752826A (en) | 2013-09-10 | 2013-09-10 | Technique for manufacturing powder metallurgy plunger pump cylinder blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103752826A true CN103752826A (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310425975.4A Pending CN103752826A (en) | 2013-09-10 | 2013-09-10 | Technique for manufacturing powder metallurgy plunger pump cylinder blank |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175355A (en) * | 2018-08-17 | 2019-01-11 | 宁波瑞丰汽车零部件有限公司 | A kind of iron-based connection pressing plate |
| CN109622975A (en) * | 2018-12-29 | 2019-04-16 | 北京恒源天桥粉末冶金有限公司 | A kind of powder metallurgy combined sintering formula plunger pump cylinder body and preparation method thereof |
| CN111195729A (en) * | 2020-01-09 | 2020-05-26 | 苏州莱特复合材料有限公司 | Production process of powder metallurgy high-pressure plunger pump cylinder body |
-
2013
- 2013-09-10 CN CN201310425975.4A patent/CN103752826A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109175355A (en) * | 2018-08-17 | 2019-01-11 | 宁波瑞丰汽车零部件有限公司 | A kind of iron-based connection pressing plate |
| CN109175355B (en) * | 2018-08-17 | 2020-10-27 | 宁波瑞丰汽车零部件有限公司 | Iron-based connecting pressing plate |
| CN109622975A (en) * | 2018-12-29 | 2019-04-16 | 北京恒源天桥粉末冶金有限公司 | A kind of powder metallurgy combined sintering formula plunger pump cylinder body and preparation method thereof |
| CN111195729A (en) * | 2020-01-09 | 2020-05-26 | 苏州莱特复合材料有限公司 | Production process of powder metallurgy high-pressure plunger pump cylinder body |
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Application publication date: 20140430 |
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| WD01 | Invention patent application deemed withdrawn after publication |