CN104001923A - Powder metallurgy manufacturing method for pressure plate - Google Patents
Powder metallurgy manufacturing method for pressure plate Download PDFInfo
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- CN104001923A CN104001923A CN201410274946.7A CN201410274946A CN104001923A CN 104001923 A CN104001923 A CN 104001923A CN 201410274946 A CN201410274946 A CN 201410274946A CN 104001923 A CN104001923 A CN 104001923A
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Abstract
The invention relates to the fields of machines, in particular to a powder metallurgy manufacturing method for a pressure plate. Prepared raw materials are mixed evenly in the material mixing procedure, and the components of the raw materials comprise, by weight, 0.4-1.0 percent of graphite, 1.5-3.0 percent of copper powder, 0.5-0.8 percent of micronized waxes (lubricants) and the balance being iron powder. In the pressing procedure and the sintering procedure, pressed blanks are sintered and arranged in a high-temperature mesh belt furnace, sintering temperature is set as 500 DEG C +/- 20 DEG C, 600 DEG C +/- 20 DEG C, 700 DEG C +/- 20 DEG C and 750 DEG C +/- 20 DEG C in a preheating temperature section, and sintering temperature is set as 1110 DEG C +/- 10 DEG C, 1120 DEG C +/- 10 DEG C, 1120 DEG C +/- 10 DEG C and 1120 DEG C +/- 10 DEG C in a sintering temperature section. Nitrogen and degraded ammonia are adopted as protective atmosphere in the sintering procedure. In the machining process, a sintered structure is machined, finish turning is carried out on excircles and end faces of products, plane grinding is carried out on the working faces of the products, and finished grinding is carried out on the working faces of the products.
Description
Technical field
The present invention relates to mechanical field, relate in particular to a kind of powder metallurgy manufacture method of pressure plare.
Background technology
A car steering pump pressure plare, this pressure plare endoporus is stepped hole, has two groups of equally distributed special-shaped through holes, working face has three groups of equally distributed special-shaped blind holes, has one group of off-load triangular groove.At present domestic pressure plare is mainly by import or machining, and manufacturing cost is high, and the production cycle is long, and the product strength of producing is not high.
Summary of the invention
The object of invention: for a kind of powder metallurgy manufacture method of pressure plare of better effects if is provided, specific purposes are shown in a plurality of essence technique effects of concrete implementation section.
In order to reach as above object, the present invention takes following technical scheme:
A powder metallurgy manufacture method for pressure plare, it mainly comprises the steps:
Compounding process, mixes the raw material configuring, and raw material weight formula is: graphite 0.4～1.0%; Copper powder 1.5～3.0%; Micro mist wax 0.5～0.8%(lubricant); Surplus is iron powder;
Suppression process, compacting makes the density of part reach 6.75g/cm more than 3;
Sintering circuit, pressed compact sintering is put in high temperature meshbeltfurnace, and sintering temperature is set to: preheat temperature temperature section is respectively, and 500 ℃ ± 20 ℃, 600 ℃ ± 20 ℃, 700 ℃ ± 20 ℃, 750 ℃ ± 20 ℃; Sintering temperature temperature section is, 1110 ℃ ± 10 ℃, and 1120 ℃ ± 10 ℃, 1120 ℃ ± 10 ℃, 1120 ℃ ± 10 ℃; Protective atmosphere in sintering circuit: nitrogen and cracked ammonium; In sintering circuit, guipure fltting speed is: 6 ms/h;
Machining: the structure after sintering is processed to fine turning outer circle, end face; Plain grinding product work face; Fine grinding product work face.
The further technical scheme of the present invention is, sintered material hardness HRB67～78.
The further technical scheme of the present invention is, lathe rotating speed 1000r/min, cutting output 0.08mm/r in described mechanical processing steps; Fine grinding pressure 0.25MPa.
The further technical scheme of the present invention is, described machining for processing a plurality of holes on the plate of sintering.
Adopt as above the present invention of technical scheme, with respect to prior art, have following beneficial effect: adopt after method of the present invention, not only improved production efficiency, saved production cost, more can save a large amount of foreign exchanges, improve the whole manufacture level of China's automobile.
Accompanying drawing explanation
In order to further illustrate the present invention, below in conjunction with accompanying drawing, further describe:
Fig. 1 is for inventing the structural representation after processing.
The specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described, embodiment is not construed as limiting the invention:
The material prescription of the powder metallurgy manufacture method of a kind of pressure plare of the present invention: graphite 0.4～1.0%+copper powder 1.5～3%+micro mist wax 0.5～0.8%(lubricant)+iron powder (surplus).
It should be noted that, the material prescription that this place provides can become the object of separate return patent.
Adopt the intensity of the pressure plare that this material makes good, cost is low, and efficiency is high.
Following table is the proportioning of each composition in 5 specific embodiments of the present invention:
| Composition | 1 | 2 | 3 | 4 | 5 |
| Copper powder | 2.5% | 2.8% | 2.2% | 2.0% | 1.8% |
| Graphite | 0.5% | 0.6% | 0.8% | 0.8% | 0.9% |
| Micro mist wax | 0.7% | 0.6% | 0.8% | 0.6% | 0.7% |
| Iron powder | Surplus | Surplus | Surplus | Surplus | Surplus |
The powder metallurgy manufacture method of pressure plare of the present invention comprises the steps:
1. compounding process, mixes the raw material configuring;
2. suppression process, suppresses and makes the density of part reach 6.75g/cm more than 3;
3. sintering circuit, pressed compact sintering is put in high temperature meshbeltfurnace, sintering temperature is set to: 500 ℃ ± 20 ℃ of preheat temperature <, 600 ℃ ± 20 ℃, 700 ℃ ± 20 ℃, 750 ℃ ± 20 ℃ >, 1110 ℃ ± 10 ℃ of sintering temperature <, 1120 ℃ ± 10 ℃, 1120 ℃ ± 10 ℃, 1120 ℃ ± 10 ℃ >;
4. finish turning operation, fine turning outer circle, end face;
5. plain grinding operation, plain grinding product work face;
6. precision grinding process, refines product work face, guarantees that product plane degree is (-).
Pressure plare of the present invention is after bench test, and the properties of the pressure plare in above each embodiment all can reach requirement, and owing to adopting powder metallurgical technique, working (machining) efficiency is high and cost is low, is more conducive to energy-conserving and environment-protective.
more than show and described basic principle of the present invention, principal character and advantage of the present invention.Those skilled in the art should understand the present invention and not be restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in claimed scope.
Claims (5)
1. a powder metallurgy manufacture method for pressure plare, it mainly comprises the steps: compounding process, and the raw material configuring is mixed, raw material weight formula is: graphite 0.4～1.0%; Copper powder 1.5～3.0%; Micro mist wax 0.5～0.8%(lubricant); Surplus is iron powder;
Suppression process, compacting makes the density of part reach 6.75g/cm more than 3;
Sintering circuit, pressed compact sintering is put in high temperature meshbeltfurnace, and sintering temperature is set to: preheat temperature temperature section is respectively, and 500 ℃ ± 20 ℃, 600 ℃ ± 20 ℃, 700 ℃ ± 20 ℃, 750 ℃ ± 20 ℃; Sintering temperature temperature section is, 1110 ℃ ± 10 ℃, and 1120 ℃ ± 10 ℃, 1120 ℃ ± 10 ℃, 1120 ℃ ± 10 ℃; Protective atmosphere in sintering circuit: nitrogen and cracked ammonium; In sintering circuit, guipure fltting speed is: 6 ms/h;
Machining: the structure after sintering is processed to fine turning outer circle, end face; Plain grinding product work face; Fine grinding product work face.
2. the powder metallurgy manufacture method of a kind of pressure plare as claimed in claim 1, is characterized in that, sintered material hardness HRB67～78.
3. the powder metallurgy manufacture method of a kind of pressure plare as claimed in claim 1, is characterized in that, lathe rotating speed 1000r/min, cutting output 0.08mm/r in described mechanical processing steps; Fine grinding pressure 0.25MPa.
4. the powder metallurgy manufacture method of a kind of pressure plare as claimed in claim 1, is characterized in that, described machining for processing a plurality of holes on the plate of sintering.
5. a pressure plare powdered metallurgical material, is characterized in that, raw material weight formula is: graphite 0.4～1.0%; Copper powder 1.5～3.0%; Micro mist wax 0.5～0.8%(lubricant); Surplus is iron powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410274946.7A CN104001923A (en) | 2014-06-19 | 2014-06-19 | Powder metallurgy manufacturing method for pressure plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410274946.7A CN104001923A (en) | 2014-06-19 | 2014-06-19 | Powder metallurgy manufacturing method for pressure plate |
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| CN104001923A true CN104001923A (en) | 2014-08-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801702A (en) * | 2015-03-18 | 2015-07-29 | 安徽恒均粉末冶金科技股份有限公司 | Powder metallurgy stator of vane steering pump and manufacturing process thereof |
| CN108547767A (en) * | 2018-05-28 | 2018-09-18 | 山西东睦华晟粉末冶金有限公司 | A kind of combined type cycloid rotor and preparation method thereof |
| CN110792756A (en) * | 2019-10-19 | 2020-02-14 | 山西东睦华晟粉末冶金有限公司 | Combined brazing sintered sprocket and preparation method thereof |
| CN111702167A (en) * | 2020-06-24 | 2020-09-25 | 重庆科利得精密机械工业有限公司 | Three-step mixing process for iron-based powder metallurgy |
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| GB1300863A (en) * | 1969-03-03 | 1972-12-20 | Asea Ab | A furnace for sintering powder bodies |
| CN1631584A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Powder metallurgy manufacturing method of oil dispensing disk |
| CN1632339A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Method of making oil-containing bearing block through powdered metallurgy |
| CN1631583A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Powder metallurgy manufacturing method of inside and outside rotor in oil pump |
| CN1704190A (en) * | 2004-06-04 | 2005-12-07 | 上海汽车股份有限公司 | Manufacturing method of automobile engine cam axle correct time belt wheel |
| CN101386073A (en) * | 2007-09-14 | 2009-03-18 | 葛莲 | Manufacture method of powder metallurgy guide device |
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2014
- 2014-06-19 CN CN201410274946.7A patent/CN104001923A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1300863A (en) * | 1969-03-03 | 1972-12-20 | Asea Ab | A furnace for sintering powder bodies |
| CN1704190A (en) * | 2004-06-04 | 2005-12-07 | 上海汽车股份有限公司 | Manufacturing method of automobile engine cam axle correct time belt wheel |
| CN1631584A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Powder metallurgy manufacturing method of oil dispensing disk |
| CN1632339A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Method of making oil-containing bearing block through powdered metallurgy |
| CN1631583A (en) * | 2004-12-24 | 2005-06-29 | 上海汽车股份有限公司 | Powder metallurgy manufacturing method of inside and outside rotor in oil pump |
| CN101386073A (en) * | 2007-09-14 | 2009-03-18 | 葛莲 | Manufacture method of powder metallurgy guide device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801702A (en) * | 2015-03-18 | 2015-07-29 | 安徽恒均粉末冶金科技股份有限公司 | Powder metallurgy stator of vane steering pump and manufacturing process thereof |
| CN108547767A (en) * | 2018-05-28 | 2018-09-18 | 山西东睦华晟粉末冶金有限公司 | A kind of combined type cycloid rotor and preparation method thereof |
| CN110792756A (en) * | 2019-10-19 | 2020-02-14 | 山西东睦华晟粉末冶金有限公司 | Combined brazing sintered sprocket and preparation method thereof |
| CN110792756B (en) * | 2019-10-19 | 2023-04-28 | 山西东睦华晟粉末冶金有限公司 | Combined brazing sintered chain wheel and preparation method thereof |
| CN111702167A (en) * | 2020-06-24 | 2020-09-25 | 重庆科利得精密机械工业有限公司 | Three-step mixing process for iron-based powder metallurgy |
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Application publication date: 20140827 |