CN102672165A - Powder metallurgy process - Google Patents
Powder metallurgy process Download PDFInfo
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- CN102672165A CN102672165A CN2012101861047A CN201210186104A CN102672165A CN 102672165 A CN102672165 A CN 102672165A CN 2012101861047 A CN2012101861047 A CN 2012101861047A CN 201210186104 A CN201210186104 A CN 201210186104A CN 102672165 A CN102672165 A CN 102672165A
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Abstract
The invention discloses a powder metallurgy process. Components C and lubricant are added into basic raw material powder; and on the basis of the mass of the basic raw material powder, the C accounts for 0.3%, and the lubricant accounts for 0.7%. The basic raw material powder comprises the following components in percentage by mass: 1.6-1.8% of Ni, 1.4-1.6% of Cu, 0.47-0.53% of Mo, 0-0.005% of C, 0-0.1% of impurity and the balance of Fe. Compared with the prior art, by using the special raw material proportion, the product has the advantages of high performance index, favorable glossiness, high stability, low rupture tendency, long service life and wide applicability, and can be used for producing gears, inner and outer rotors, output shafts and the like.
Description
Technical field
The present invention relates to a kind of powder metallurgy.
Background technology
Mostly existing powder metallurgical production technique 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, hardness, intensity are low, influence product service life.
Summary of the invention
Goal of the invention: to the problems referred to above, the purpose of this invention is to provide that a mass is good, stability is strong, excellent performance, powder metallurgy applied widely.
Technical scheme: a kind of powder metallurgy, in the basic material powder, increase component C and lubricant, the addition of each component is a radix in the quality of basic material powder, C is 0.3%, lubricant is 0.7%; The component of said basic material powder and quality percentage composition are: by 100%, Ni is 1.6～1.8%, Cu is 1.4～1.6%, Mo is 0.47～0.53%, C is 0～0.005%, impurity is 0～0.1%, surplus is Fe.
Described lubricant is a zinc stearate.
The finished product technology of above-mentioned a kind of powder metallurgy may further comprise the steps:
(1) stirs: above-mentioned powder metallurgy is stirred, evenly mix;
(2) be shaped: mixed uniformly powder material 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 in sintering furnace, 670 ℃～1140 ℃ of sintering furnace temperature;
(4) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped processes with the product that sinters;
(5) 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 30 minutes and gets product;
(7) oil immersion packing: finished product is cleaned oil immersion, packing.
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, the lubricant of increase by 0.7% 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 0.8% can increase intensity and the hardness behind the product sintering; Surface gloss is obviously improved during Vehicle Processing, and recessing intensity obviously improves.
Beneficial effect: compared with prior art, advantage of the present invention is to adopt special proportioning raw materials, makes the product performance index of producing high; Glossiness is good, and good stability is not prone to phenomenons such as fracture; Long service life, 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.
A kind of powder metallurgy is characterized in that: in the basic material powder, increase component C and zinc stearate, the addition of each component is a radix in the quality of basic material powder, and C is 0.3%, zinc stearate is 0.7%; The component of said basic material powder and quality percentage composition are: by 100%, Ni is 1.6～1.8%, Cu is 1.4～1.6%, Mo is 0.47～0.53%, C is 0～0.005%, impurity is 0～0.1%, surplus is Fe.
The finished product technology of above-mentioned a kind of powder metallurgy may further comprise the steps:
(1) stirs: in 100kg basic material powder, increase the C of 0.3kg, the zinc stearate of 0.7kg, stir 1.5h, evenly mix.
(2) 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.
(3) 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.
(4) Vehicle Processing: by the detail drawing requirement, the part that mould can not be shaped processes with the product that sinters.
(5) 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, vibrate 30 minutes removal surface blots and burr and gets product.
(7) oil immersion packing: finished product is cleaned oil immersion, packing.
Make same force-output shaft gear respectively with powder metallurgy of the present invention and prior art and compare, the product test data of experiment is as shown in the table:
| Produce the powder metallurgy of mechanical axis gear | Recessing glossiness (max=6.3) | Force-output shaft C catching groove tensile strength |
| Prior art powder metallurgy | 5.0～7.8 | 200Kgf～450Kgf |
| Powder metallurgy of the present invention | 0.8～3.6 | 450Kgf～680Kgf |
Have above-mentioned correction data visible, the product glossiness of powder metallurgy preparation of the present invention is better, and performance indications are higher, and product quality is better.
Claims (2)
1. powder metallurgy is characterized in that: in the basic material powder, increase component C and lubricant, the addition of each component is a radix in the quality of basic material powder, and C is 0.3%, lubricant is 0.7%; The component of said basic material powder and quality percentage composition are: by 100%, Ni is 1.6～1.8%, Cu is 1.4～1.6%, Mo is 0.47～0.53%, C is 0～0.005%, impurity is 0～0.1%, surplus is Fe.
2. a kind of powder metallurgy according to claim 1 is characterized in that: described lubricant is a zinc stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101861047A CN102672165A (en) | 2012-06-07 | 2012-06-07 | Powder metallurgy process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101861047A CN102672165A (en) | 2012-06-07 | 2012-06-07 | Powder metallurgy process |
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| CN102672165A true CN102672165A (en) | 2012-09-19 |
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| CN2012101861047A Pending CN102672165A (en) | 2012-06-07 | 2012-06-07 | Powder metallurgy process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831432A (en) * | 2012-11-27 | 2014-06-04 | 安徽省恒宇粉末冶金有限公司 | Automobile power steering pump powder metallurgy inner and outer rotor formula and preparation technology |
| CN104117679A (en) * | 2014-06-24 | 2014-10-29 | 宁波甬台粉末冶金有限公司 | Gear shaft sleeve and die and method for machining same |
| CN105921740A (en) * | 2016-06-27 | 2016-09-07 | 杭州萧山石牛山粉末冶金厂 | Powder metallurgy gear and processing technology thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759960A (en) * | 2005-10-28 | 2006-04-19 | 合肥波林新材料有限公司 | Warm processing powdered iron, and preparation method |
| CN101195164A (en) * | 2006-10-23 | 2008-06-11 | 伯吉斯-诺顿制造有限公司 | Manufacture of clutch components |
| CN102343436A (en) * | 2011-09-23 | 2012-02-08 | 常熟市华德粉末冶金有限公司 | In-situ sintered dispersion particle-reinforced warm-compacting powder metallurgy material and preparation method thereof |
| CN102407333A (en) * | 2011-11-08 | 2012-04-11 | 益阳市俊淞汽车配件制造有限公司 | Powder metallurgy stator of car steering pump and production method thereof |
-
2012
- 2012-06-07 CN CN2012101861047A patent/CN102672165A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1759960A (en) * | 2005-10-28 | 2006-04-19 | 合肥波林新材料有限公司 | Warm processing powdered iron, and preparation method |
| CN101195164A (en) * | 2006-10-23 | 2008-06-11 | 伯吉斯-诺顿制造有限公司 | Manufacture of clutch components |
| CN102343436A (en) * | 2011-09-23 | 2012-02-08 | 常熟市华德粉末冶金有限公司 | In-situ sintered dispersion particle-reinforced warm-compacting powder metallurgy material and preparation method thereof |
| CN102407333A (en) * | 2011-11-08 | 2012-04-11 | 益阳市俊淞汽车配件制造有限公司 | Powder metallurgy stator of car steering pump and production method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831432A (en) * | 2012-11-27 | 2014-06-04 | 安徽省恒宇粉末冶金有限公司 | Automobile power steering pump powder metallurgy inner and outer rotor formula and preparation technology |
| CN103831432B (en) * | 2012-11-27 | 2016-03-23 | 安徽省恒宇粉末冶金有限公司 | Boosting pump for car steering powder metallurgy inner and outer rotors formula and manufacture craft |
| CN104117679A (en) * | 2014-06-24 | 2014-10-29 | 宁波甬台粉末冶金有限公司 | Gear shaft sleeve and die and method for machining same |
| CN105921740A (en) * | 2016-06-27 | 2016-09-07 | 杭州萧山石牛山粉末冶金厂 | Powder metallurgy gear and processing technology thereof |
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Application publication date: 20120919 |