CN102672181A - Production process of powder metallurgy products - Google Patents
Production process of powder metallurgy products Download PDFInfo
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- CN102672181A CN102672181A CN2012101860951A CN201210186095A CN102672181A CN 102672181 A CN102672181 A CN 102672181A CN 2012101860951 A CN2012101860951 A CN 2012101860951A CN 201210186095 A CN201210186095 A CN 201210186095A CN 102672181 A CN102672181 A CN 102672181A
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Abstract
The invention discloses a production process of powder metallurgy products. The production process comprises adding components including 0.5-1.2% of C, 0.3-0.9% of lubricating agents, 1.2-2.0 % of Cu and 2.4-3.0% of Ni into basic raw material powder FSY200.3, wherein the addition of each component is calculated with mass of the basic raw material powder FSY200.3 serving as a basic number; and performing stirring, forming, sintering, turning machining, heat treatment, grinding with vibration, oil immersion and packaging on powder metallurgy to obtain finished products. The production process of the powder metallurgy products has the advantages of being stable in production process and strong in reliability. In addition, the produced powder metallurgy products are excellent in quality, high in performance index, wide in application range and suitable for producing gears, internal rotors, external rotors, output shafts and the like.
Description
Technical field
The present invention relates to a kind of production technology of sintered metal product.
Background technology
Mostly existing sintered metal product production technology is: stir material-shaping-sintering-operations such as packing.In this kind technology, a lot of companies are in order to reduce cost, and modes such as prescription or minimizing technology are simplified in employing, provide cost savings though simplify prescription, can the properties of product quality is lacked guarantee.Because powder metallurgy belongs to graininess and is shaped, and reduces the number of prescription and when machined, causes the accessory turning face crude easily, influences glossiness, serious appearance easy fracture phenomenon influences product service life.It is improper to reduce the adjustment of technology or technology, directly causes poor product quality, and performance indications do not reach standard.
Summary of the invention
Goal of the invention: to the problems referred to above, the purpose of this invention is to provide a kind of production technology of sintered metal product, adopt the quality of item of this explained hereafter good, stability is strong, the scope of application is extensive.
Technical scheme: a kind of production technology of sintered metal product may further comprise the steps:
(1) composition of raw materials: in basic material powder FSY200.3, increase component C, lubricant, Cu, Ni; The addition of each component is a radix in the quality of basic material powder FSY200.3, and C is 0.5～1.2%, lubricant is 0.3～0.9%, Cu is 1.2～2.0%, Ni is 2.4～3.0%;
(2) stir: the composition of raw materials powder in the step (1) is stirred, mix;
(2) be shaped: the powder that mixes is sent into the forming machine hopper, suppress product through shaping dies and give birth to embryo;
(3) sintering: product is given birth to embryo put on carbon plate, sintering 3.5～4h becomes semi-finished product, 670 ℃～1140 ℃ of sintering furnace temperature in sintering furnace;
(4) heat treatment: the semi-finished product that sinter are placed on the heat treatment guipure, adopt the heat-treatment furnace heating, 850 ℃ ± 10 ℃ of heating-up temperatures; Heat treatment time 1～3 hour gets into You Cao temper fire then, and the oil temperature is below 60 ℃; Take out of through guipure after quenching; Sent into the tempering furnace tempering at last 1～2 hour, 210 ℃ ± 10 ℃ of temperatures are seen product off again; Product after quenching is carried out temper can reduce its hardness;
(6) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrates 20～40 minutes and gets product;
(7) oil immersion packing: finished product is cleaned oil immersion, packing.
The component of basic material powder FSY200.3 and quality percentage composition are described in the step (1): by 100%, C is 0.003%, Si is 0.03%, Mn is 0.09%, surplus is Fe.
Said lubricant is a zinc stearate.
According to the detail drawing requirement; The part that mould can not be shaped processes; As the heat treatment of carrying out step (4) after preferably the semi-finished product (4) of step (3) gained being machined again, the step of Vehicle Processing is: with the semi-finished product article that sinter not pressing mold partly adopt lathe to process.
Said sintering furnace is the net belt type sintering furnace.
Said heat-treatment furnace is the net belt type heat-treatment furnace.
Said product is given birth to the embryo once die stamping forming.
In the component and content of powder metallurgy, 0.3～0.9% the lubricant that increases basic material powder FSY200.3 quality can make powder metallurgy when the product shaping demoulding, have better lubrication, avoids product stripping to have some setbacks and causes pulling; The C of increase by 0.5～1.2% can increase intensity and the hardness behind the product sintering; The Cu of increase by 1.2～2.0% makes product Cu in sintering process can fuse between the powder particle gap fully; The Ni of increase by 2.4～3.0% can guarantee the durability degree of product in client's use.
Beneficial effect: compared with prior art, advantage of the present invention is a stable production process, good reliability, and the sintered metal product good quality of production, performance indications are high, and are applied widely, can be used for producing gear, inner and outer rotors, force-output shaft etc.
The specific embodiment
Below in conjunction with specific embodiment; Further illustrate the present invention; Should understand these embodiment only be used to the present invention is described and be not used in the restriction scope of the present invention; After having read the present invention, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Embodiment 1:
A kind of production technology of sintered metal product may further comprise the steps:
(1) composition of raw materials: in 100kg basic material powder FSY200.3, add the C of 0.8kg, the zinc stearate of 0.6kg, the Cu of 1.6kg, the Ni of 2.7kg; Basic material powder FSY200.3 wherein, by 100, its component and mass content are: C is 0.003%, Si is 0.03%, Mn is 0.09%, surplus is Fe.
(2) stir: the composition of raw materials powder in the step (1) is stirred 1.5h, mix.
(3) be shaped: mixed uniformly powder material is sent into the forming machine hopper, suppress product through the shaping dies once-forming and give birth to embryo.
(4) sintering: product is given birth to embryo put on carbon plate, sintering in the net belt type sintering furnace is given birth to embryo with product and is sintered semi-finished product into.Sintering furnace temperature: 680 ℃ ± 10 ℃ of minimum temperatures; 1130 ℃ ± 10 ℃ of the highest temperatures, this maximum temperature is higher than the fusing point of copper, and temperature can slowly melt copper powder wherein by low the rising fully; Thereby fill up gap between the product powder particle, product strength and hardness are increased substantially.It is 3.5～4h from advancing stove to coming out of the stove that product is given birth to embryo.
(5) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped adopts machined into to come out with the semi-finished product that sinter.
(6) heat treatment: the semi-finished product that Vehicle Processing is good place on the heat treatment guipure, adopt the heating of net belt type heat-treatment furnace, 850 ℃ ± 10 ℃ of heating-up temperatures; The heat-treatment furnace processing time is 2 hours, gets into oil groove then automatically and quenches, 45 ℃ of oil temperature; Take out of through guipure after quenching; Sent into the tempering furnace tempering at last 1.5 hours, and again product was seen off, 210 ℃ ± 10 ℃ of temperatures.
(7) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrate 30 minutes removal surface blots and burr and gets product.
(8) oil immersion packing: finished product is cleaned oil immersion, packing.
Embodiment 2:
A kind of production technology of sintered metal product may further comprise the steps:
(1) composition of raw materials: in 100kg basic material powder FSY200.3, add the C of 0.5kg, the zinc stearate of 0.3kg, the Cu of 1.2kg, the Ni of 2.4kg; Basic material powder FSY200.3 wherein, by 100, its component and mass content are: C is 0.003%, Si is 0.03%, Mn is 0.09%, surplus is Fe.
(2) stir: the composition of raw materials powder in the step (1) is stirred 1h, mix.
(3) be shaped: mixed uniformly powder material is sent into the forming machine hopper, suppress product through the shaping dies once-forming and give birth to embryo.
(4) sintering: product is given birth to embryo put on carbon plate, sintering in the net belt type sintering furnace is given birth to embryo with product and is sintered semi-finished product into.Sintering furnace temperature: 680 ℃ ± 10 ℃ of minimum temperatures; 1130 ℃ ± 10 ℃ of the highest temperatures, this maximum temperature is higher than the fusing point of copper, and temperature can slowly melt copper powder wherein by low the rising fully; Thereby fill up gap between the product powder particle, product strength and hardness are increased substantially.It is 3.5～4h from advancing stove to coming out of the stove that product is given birth to embryo.
(5) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped adopts machined into to come out with the semi-finished product that sinter.
(6) heat treatment: the semi-finished product that Vehicle Processing is good place on the heat treatment guipure, adopt the heating of net belt type heat-treatment furnace, 850 ℃ ± 10 ℃ of heating-up temperatures; The heat-treatment furnace processing time is 1 hour, gets into oil groove then automatically and quenches, 40 ℃ of oil temperature; Take out of through guipure after quenching; Sent into the tempering furnace tempering at last 1 hour, and again product was seen off, 210 ℃ ± 10 ℃ of temperatures.
(7) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrate 20 minutes removal surface blots and burr and gets product.
(8) oil immersion packing: finished product is cleaned oil immersion, packing.
Embodiment 3:
A kind of production technology of sintered metal product may further comprise the steps:
(1) composition of raw materials: in 100kg basic material powder FSY200.3, add the C of 1.2kg, the zinc stearate of 0.9kg, the Cu of 2.0kg, the Ni of 3.0kg; Basic material powder FSY200.3 wherein, by 100, its component and mass content are: C is 0.003%, Si is 0.03%, Mn is 0.09%, surplus is Fe.
(2) stir: the composition of raw materials powder in the step (1) is stirred 2h, mix.
(3) be shaped: mixed uniformly powder material is sent into the forming machine hopper, suppress product through the shaping dies once-forming and give birth to embryo.
(4) sintering: product is given birth to embryo put on carbon plate, sintering in the net belt type sintering furnace is given birth to embryo with product and is sintered semi-finished product into.Sintering furnace temperature: 680 ℃ ± 10 ℃ of minimum temperatures; 1130 ℃ ± 10 ℃ of the highest temperatures, this maximum temperature is higher than the fusing point of copper, and temperature can slowly melt copper powder wherein by low the rising fully; Thereby fill up gap between the product powder particle, product strength and hardness are increased substantially.It is 3.5～4h from advancing stove to coming out of the stove that product is given birth to embryo.
(5) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped adopts machined into to come out with the semi-finished product that sinter.
(6) heat treatment: the semi-finished product that Vehicle Processing is good place on the heat treatment guipure, adopt the heating of net belt type heat-treatment furnace, 850 ℃ ± 10 ℃ of heating-up temperatures; The heat-treatment furnace processing time is 3 hours, gets into oil groove then automatically and quenches, 50 ℃ of oil temperature; Take out of through guipure after quenching; Sent into the tempering furnace tempering at last 2 hours, and again product was seen off, 210 ℃ ± 10 ℃ of temperatures.
(7) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrate 40 minutes removal surface blots and burr and gets product.
(8) oil immersion packing: finished product is cleaned oil immersion, packing.
Embodiment 4:
The force-output shaft that adopts described production technology of embodiment 1-3 and prior art to make is respectively compared, and the product test data of experiment is as shown in the table:
| Force-output shaft | Sintering hardness | Intensity |
| Embodiment 1 | HRC85° | 1400Kgf |
| Embodiment 2 | HRC82° | 1200Kgf |
| Embodiment 3 | HRC80° | 1360Kgf |
| Commercially available | HRC58° | 600Kgf |
Have above-mentioned correction data visible, the product properties index that powder metallurgical production technique of the present invention is produced is high, and product quality is better.
Claims (7)
1. the production technology of a sintered metal product is characterized in that may further comprise the steps:
(1) composition of raw materials: in basic material powder FSY200.3, increase component C, lubricant, Cu, Ni; The addition of each component is a radix in the quality of basic material powder FSY200.3, and C is 0.5～1.2%, lubricant is 0.3～0.9%, Cu is 1.2～2.0%, Ni is 2.4～3.0%;
(2) stir: the composition of raw materials powder in the step (1) is stirred, mix;
(2) be shaped: the powder that mixes is sent into the forming machine hopper, suppress product through shaping dies and give birth to embryo;
(3) sintering: product is given birth to embryo put on carbon plate, sintering 3.5～4h becomes semi-finished product, 670 ℃～1140 ℃ of sintering furnace temperature in sintering furnace;
(4) heat treatment: the semi-finished product that sinter are placed on the heat treatment guipure, adopt the heat-treatment furnace heating, 850 ℃ ± 10 ℃ of heating-up temperatures; Heat treatment time 1～3 hour gets into You Cao temper fire then, and the oil temperature is below 60 ℃; Take out of through guipure after quenching; Sent into the tempering furnace tempering at last 1～2 hour, 210 ℃ ± 10 ℃ of temperatures are seen product off again;
(6) vibro-grinding: the product that heat treatment is good is put into oscillating mill, adds grind stone, vibrates 20～40 minutes and gets product;
(7) oil immersion packing: finished product is cleaned oil immersion, packing.
2. the production technology of a kind of sintered metal product according to claim 1; It is characterized in that: the component of basic material powder FSY200.3 and quality percentage composition are described in the step (1): by 100%, C is 0.003%, Si is 0.03%, Mn is 0.09%, surplus is Fe.
3. the production technology of a kind of sintered metal product according to claim 1, it is characterized in that: described lubricant is a zinc stearate.
4. according to the production technology of each described a kind of sintered metal product of claim 1 to 3; It is characterized in that: carry out the heat treatment of step (4) after the semi-finished product (4) of step (3) gained are machined again, the step of Vehicle Processing is: with the product that sinters not pressing mold partly adopt lathe to process.
5. according to the production technology of each described a kind of sintered metal product of claim 1 to 3, it is characterized in that: said sintering furnace is the net belt type sintering furnace.
6. according to the production technology of each described a kind of sintered metal product of claim 1 to 3, it is characterized in that: said heat-treatment furnace is the net belt type heat-treatment furnace.
7. according to the production technology of each described a kind of sintered metal product of claim 1 to 3, it is characterized in that: said product is given birth to the embryo once die stamping forming.
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| CN2012101860951A CN102672181A (en) | 2012-06-07 | 2012-06-07 | Production process of powder metallurgy products |
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| CN2012101860951A CN102672181A (en) | 2012-06-07 | 2012-06-07 | Production process of powder metallurgy products |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990064A (en) * | 2012-10-26 | 2013-03-27 | 重庆聚能粉末冶金有限公司 | Method for manufacturing motorcycle spring seat |
| CN103540847A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy automobile brake pad steel back and preparation method thereof |
| CN104259462A (en) * | 2014-09-10 | 2015-01-07 | 太仓市锦立得粉末冶金有限公司 | Technology for manufacturing gear output shaft by means of powder metallurgy |
| CN112658264A (en) * | 2020-12-14 | 2021-04-16 | 苏州莱特复合材料有限公司 | Powder metallurgy double-drive hub and production process thereof |
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| JP2000145780A (en) * | 1998-11-13 | 2000-05-26 | Pooraito Kk | Oil retaining sintered bearing and manufacture thereof |
| EP1541261A1 (en) * | 1999-08-19 | 2005-06-15 | H.C. STARCK, Inc. | Low oxygen refractory metal powder for powder metallurgy |
| CN1348054A (en) * | 2001-09-28 | 2002-05-08 | 华南理工大学 | Engine valve guide tube of composite powder metallurgy material and its manufacture |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990064A (en) * | 2012-10-26 | 2013-03-27 | 重庆聚能粉末冶金有限公司 | Method for manufacturing motorcycle spring seat |
| CN102990064B (en) * | 2012-10-26 | 2015-07-15 | 重庆聚能粉末冶金有限公司 | Method for manufacturing motorcycle spring seat |
| CN103540847A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder metallurgy automobile brake pad steel back and preparation method thereof |
| CN104259462A (en) * | 2014-09-10 | 2015-01-07 | 太仓市锦立得粉末冶金有限公司 | Technology for manufacturing gear output shaft by means of powder metallurgy |
| CN112658264A (en) * | 2020-12-14 | 2021-04-16 | 苏州莱特复合材料有限公司 | Powder metallurgy double-drive hub and production process thereof |
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Application publication date: 20120919 |