CN1131069A - Oil pump choke regulating ring gear made of metal powder material and its making method - Google Patents
Oil pump choke regulating ring gear made of metal powder material and its making method Download PDFInfo
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- CN1131069A CN1131069A CN 95114045 CN95114045A CN1131069A CN 1131069 A CN1131069 A CN 1131069A CN 95114045 CN95114045 CN 95114045 CN 95114045 A CN95114045 A CN 95114045A CN 1131069 A CN1131069 A CN 1131069A
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Abstract
The formula for making oil-pump nozzle regulating ring gear by using metal powder materials is composed of (wt%) 0.01-0.5% of engine oil, 0.5-2% of graphite, 0.5-2% of zinc stearate, 1-5% of copper powder and the rest is iron powder. Its preparation process is as follows: pressing blank, sintering for 0.7-1.5 hr. in the nitrogen atmosphere of furnace at 1050-1250 deg.C, oil quenching after heating for 30-60 min. in the nitrogen atmosphere in the furnace at 820-890 deg.C, air-cooling after heating for 30-60 min. in the nitrogen atmosphere in the furnace at 100-400 deg.C, and oil immersion for 1-2 hr.. The strength of this regulating ring gear is over 400N/sq.mm.
Description
The invention belongs to field of powder metallurgy, particularly make the material composition and the method for manufacturing technology of oil pump choke regulating ring gear made with metal powder material.
Present employed oil pump choke regulating ring gear made all is to make with machine-tooled method with cast steel, forged steel or round steel, and this adjusting gear ring manufacturing cost is higher and cause the waste of material.Another kind method is to make with the metal charge powder material, but the intensity of this gear ring is not enough always.
Japanese Patent J85037161 J54043807 discloses a kind of sintered gear(s) product, with iron powder and nickel, copper and carbon dust mix press forming and 1130 ℃ of temperature sinter moldings.Here do not point out any product, the intensity of undeclared product yet.
The purpose of this invention is to provide a kind ofly, add the adjusting gear ring of the compound compression moulding of machine oil, graphite, copper powder and Zinic stearas based on iron powder.
Another object of the present invention provides a kind of manufacturing and thermal treatment process of above-mentioned adjusting gear ring, promptly puts into the charcoal rear enclosed in blank sintering boat, sintering and thermal treatment under nitrogen atmosphere protection.
According to the oil pump choke regulating ring gear made made from metal powder material of the present invention, be in iron-based powder, to add 0.01～0.5% machine oil, 0.5～2% graphite, 1～5% copper powder, 0.5～2% Zinic stearas, all the other are iron-based powder.
Processing method according to the oil pump choke regulating ring gear made of making metal powder material of the present invention is made up of the following step:
1) machine oil, graphite, copper powder, the Zinic stearas of the above-mentioned per-cent of interpolation in iron-based powder are crossed 100 mesh sieves and are made compound after mixing thoroughly;
2) 9～12 gram compounds are packed into add subsidiary material again in the mould, suppress the blank of oil pump choke regulating ring gear made;
3) seal boat blank dress boat and after adding 10～50 gram charcoals;
4) the sintering boat is packed in 1050～1250 ℃ of sintering ovens, feed flow and be 3～12 liters/minute nitrogen, 0.7～1.5 hour postcooling of sintering;
5) by following system the sintering blank is heat-treated:
A) in 820～890 ℃ stove, feed nitrogen, will regulate gear ring at this stove internal heating oil quenching after 30～60 minutes;
B) in 100～400 ℃ of stoves, feed nitrogen, with the heating of the adjusting gear ring behind the oil quenching 30～60 minutes, the back air cooling under nitrogen protection of coming out of the stove;
6) in oil, soaking into 1～2 hour through heat treated adjusting gear ring.
According to the present invention, described subsidiary material are every blank≤4 gram metal steel backing.
According to the oil pump choke regulating ring gear made made from metal powder material of the present invention, its intensity reaches 400N/mm
2More than, reach the performance requriements of use fully.Manufacturing cost then is reduced to 2.2 yuan/part from 3.6 yuan every of steel part, can obtain remarkable economic efficiency and social benefit.
Embodiment
Get 11 kilograms of iron powders, add 3.8 gram (accounting for 0.032%) machine oil, 99 gram (accounting for 0.86%) graphite, 340 gram (accounting for 3%) copper powders, 157 gram (accounting for 1.3%) Zinic stearass are mixed the back thoroughly and are crossed 100 mesh sieves, make compound.
Take by weighing compound by 9 one of gram and pack in the mould, add 2 gram subsidiary material again and suppress, 11000 gram compounds suppress 900 altogether and regulate the gear ring blanks.
Blank dress sintering boat, seal boat after adding 20 gram charcoals again.
The sintering boat is packed in 1200 ± 30 ℃ of sintering ovens, is 1.5 hours postcooling of sintering under 4 liters/minute the nitrogen protection at flow.
Blank behind the sintering is heat-treated by following system:
A) in 820～890 ℃ stove, feed nitrogen, heat the oil quenching of coming out of the stove after 30～60 minutes,
B) feed nitrogen in 100～400 ℃ of stoves, the workpiece behind the heating oil quenching was come out of the stove after 30～60 minutes, air cooling under nitrogen protection,
Will be through heat treated workpiece immersion oil 1～2 hour.
The chemical ingredients of prepared oil pump choke regulating ring gear made is as shown in table 1 as stated above, and its physical and mechanical properties is as shown in table 2.
The chemical ingredients of table 1 metal-powder oil pump choke regulating ring gear made
| Composition | Total iron | Total carbon | Combined carbon | Other |
| Weight, % | ≥96 | ≤2 | ≤1 | ≤3 |
The physical and mechanical properties of table 2 metal-powder oil pump choke regulating ring gear made
| Project | Density (oil-containing) g/cm 3?? | Monodentate switch out intensity, N/mm 2?????????? | Hardness HB |
| Index | ????≥6.2 | ?????≥400 | ?≥70 |
When heat treating regime is: in 860 ℃ of stoves, feed the nitrogen heating 40min oil quenching of coming out of the stove, again the dress of the sintered part behind oil quenching boat is sent into logical nitrogen protection heating 40min in 200 ℃ of stoves, come out of the stove under nitrogen protection behind the air cooling oil immersion 1 hour.Record and regulate gear ring density 6.9 gram/cm
3, intensity is 450N/mm
2, hardness is HB75.
The actual tests proving effect is good.
Claims (6)
1, a kind of oil pump choke regulating ring gear made made from iron-base powder is characterized in that its composition is 0.01～0.5% machine oil, 0.5～2% graphite, and 1～5% copper powder, 0.5～2% Zinic stearas, all the other are iron-based powder.
2,, it is characterized in that its composition is according to the oil pump choke regulating ring gear made of claim 1: 0.032% machine oil, 0.86% graphite, 3% copper powder, 1.3% Zinic stearas, all the other are iron powder.
3,, it is characterized in that granularity≤100 orders of various powders according to the oil pump choke regulating ring gear made of claim 1.
4, a kind of processing method of making the described oil pump choke regulating ring gear made of claim 1 is characterized in that this processing method is made up of the following step:
1) machine oil, graphite, copper powder, the Zinic stearas of the above-mentioned per-cent of interpolation in iron-based powder are made compound,
2) 9～12 gram compounds packed into add subsidiary material again in the mould, suppress the blank of oil pump choke regulating ring gear made,
3) seal boat blank dress boat and after adding 10～50 gram charcoals,
4) in the sintering boat was packed 1050～1250 ℃ of sintering ovens into, the feeding flow was 3～12 liters/minute a nitrogen, 0.7～1.5 hour postcooling of sintering,
5) by following system the sintering blank is heat-treated:
A) in 820～890 ℃ stove, feed nitrogen, will regulate gear ring at this stove internal heating oil quenching after 30～60 minutes,
B) in 100～400 ℃ of stoves, feed nitrogen, with the heating of the adjusting gear ring behind the oil quenching 30～60 minutes, the back air cooling under nitrogen protection of coming out of the stove,
6) in oil, soaking into 1～2 hour through heat treated adjusting gear ring.
5,, it is characterized in that the subsidiary material that added are every blank≤4 gram metal steel backing according to the processing method of claim 4.
6,, it is characterized in that its operation steps is according to the processing method of claim 4:
1) in 11 kilograms of iron powders, add 3.8 gram machine oil, 99 gram graphite, 157 gram Zinic stearass, 340 gram copper powders are mixed the back thoroughly and are crossed 100 mesh sieves, make compound,
2) take by weighing 9 gram compounds and pack in the mould, add 2 gram subsidiary material again, the gear ring blank is regulated in compacting, suppresses 900 blanks altogether,
3) blank is adorned boat, seals boat behind the adding 20 gram charcoals,
4) be that 4 liters/minute nitrogen is done protection gas with flow, at 1.5 hours postcooling of 1200 ± 30 ℃ of following sintering,
5) blank behind the sintering is heat-treated by following system:
A) in 860 ℃ stove, feed nitrogen, heat the oil quenching of coming out of the stove after 40 minutes,
B) feed nitrogen in 200 ℃ of stoves, the workpiece behind the heating oil quenching was come out of the stove after 40 minutes, air cooling under nitrogen protection,
6) passing through heat treated workpiece immersion oil 1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95114045 CN1131069A (en) | 1995-12-29 | 1995-12-29 | Oil pump choke regulating ring gear made of metal powder material and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95114045 CN1131069A (en) | 1995-12-29 | 1995-12-29 | Oil pump choke regulating ring gear made of metal powder material and its making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1131069A true CN1131069A (en) | 1996-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95114045 Pending CN1131069A (en) | 1995-12-29 | 1995-12-29 | Oil pump choke regulating ring gear made of metal powder material and its making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1131069A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249564B (en) * | 2008-03-26 | 2010-12-22 | 浙江中平粉末冶金有限公司 | Powder metallurgy technique |
| CN101323935B (en) * | 2008-07-09 | 2012-06-27 | 上海珈鸿机械零部件有限公司 | Soft magnetic automobile antilocking system gear ring and method for manufacturing the same |
| CN103464750A (en) * | 2013-10-12 | 2013-12-25 | 泰州市新诚新材料科技有限公司 | Manufacturing method of automobile ABS (acrylonitrile-butadiene-styrene) induction counting tooth ring |
| CN103537673A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder-metallurgy oil-pump adjusting gear ring and manufacturing method thereof |
| US11992880B1 (en) * | 2019-07-22 | 2024-05-28 | Keystone Powdered Metal Company | Acoustical dampening powder metal parts |
-
1995
- 1995-12-29 CN CN 95114045 patent/CN1131069A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249564B (en) * | 2008-03-26 | 2010-12-22 | 浙江中平粉末冶金有限公司 | Powder metallurgy technique |
| CN101323935B (en) * | 2008-07-09 | 2012-06-27 | 上海珈鸿机械零部件有限公司 | Soft magnetic automobile antilocking system gear ring and method for manufacturing the same |
| CN103537673A (en) * | 2013-10-11 | 2014-01-29 | 芜湖市鸿坤汽车零部件有限公司 | Powder-metallurgy oil-pump adjusting gear ring and manufacturing method thereof |
| CN103464750A (en) * | 2013-10-12 | 2013-12-25 | 泰州市新诚新材料科技有限公司 | Manufacturing method of automobile ABS (acrylonitrile-butadiene-styrene) induction counting tooth ring |
| US11992880B1 (en) * | 2019-07-22 | 2024-05-28 | Keystone Powdered Metal Company | Acoustical dampening powder metal parts |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |