CN107030453B - The cold-forging technique of clutch sleeve - Google Patents
The cold-forging technique of clutch sleeve Download PDFInfo
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- CN107030453B CN107030453B CN201710343319.8A CN201710343319A CN107030453B CN 107030453 B CN107030453 B CN 107030453B CN 201710343319 A CN201710343319 A CN 201710343319A CN 107030453 B CN107030453 B CN 107030453B
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- bar
- cold
- clutch sleeve
- forging
- forging technique
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention discloses a kind of cold-forging technique of clutch sleeve, includes the following steps: outside blanking → spheroidizing → ball blast → pre-treatment → cold forging → brill inner hole → modifier treatment → set boring → set.The forging temperature of cold forging of the invention is room temperature, and product tissue crystal grain more refines, surface quality non-oxidation, decarburization, and dimensional accuracy is high, and surface roughness is low, and phosphorus saponification process lubricant technology technical maturity, die life also substantially increase at present.
Description
Technical field
The invention belongs to the processing technologys of clutch sleeve, are more particularly to a kind of cold-forging technique of clutch sleeve.
Background technique
The processing technology of existing clutch sleeve is mainly warm forging technique.For warm forging, steel are put into die cavity temperature
800 DEG C of Shi Yaoyou of degree, even at this moment 10 DEG C of difference can all crystallize coarse or crystalline structure defect.There is surface defect
Pressure of the steel in grinding tool under cannot get necessary pressure bonding, so that it internal crack etc. is occurred.The mold materials of warm forging
The qualities such as higher wearability, red hardness and less decarburization are required, but can be had in the temperature region more than 400 DEG C
The lubricant of effect cooling is almost not that so the service life of mold is short, and the error of temperature also will have a direct impact on when warm forging
The precision of blank.
Therefore, the problem of processing technology of existing clutch sleeve is primarily present has: cutting stock weight weight；Coating is heated into
This height；It is big to machine chipping allowance；There need to be roughing technique；Warm forging is also easy to produce forging defect.
Summary of the invention
The object of the present invention is to provide a kind of lower production costs and the cold forging works of the preferable clutch sleeve of product quality
Skill.
According to an aspect of the invention, there is provided a kind of cold-forging technique of clutch sleeve, includes the following steps:
Blanking: blank is cut into the bar of setting length and weight；
Spheroidizing: bar is fitted into well formula resistance furnace, after being evacuated to air pressure≤- 0.08MPa, keeps pressing for 20 minutes
Power does not rise, and confirms and is heated to 300-400 DEG C after the retort air-tightness of well formula resistance furnace is intact, opens valve and exclude in furnace gas
Moisture after inflated with nitrogen to 0.1MPa, is begun to warm up, and is heated, is kept the temperature and retort pressure keeps 0.1-0.2MPa, heating temperature when slow cooling
765 DEG C of degree, soaking time 4.5 hours, tapping temperature≤350 DEG C；
Ball blast: Shot Blasting is carried out to the surface of bar, makes the surface of bar that there is roughness；
Pre-treatment: phosphorus saponification process in surface is carried out to the bar after ball blast, bar is successively immersed to configuration in order
In good phosphating solution and saponification liquor, billet surface forms phospholeum film, plays lubricating action, the roughness of billet surface makes phosphorus
Change liquid and saponification liquor is attached to billet surface, forms surface lubrication layer；
Cold forging: by bar be put into it is counter force down mould, upper mold downlink squeezes bar, shapes bar；
It bores inner hole: bar being clamped on Drilling machines bench, is drilled with drill bit to bar；
Modifier treatment: being warming up to 880 DEG C → carburizing → quenching → rear cleaning → cooling → tempering temperature is 545 DEG C；
Cover boring: with numerically controlled lathe by all inner holes of product boring；
Set is outer: with numerically controlled lathe by all outer circles of product turning.
In some embodiments, blank is cut into in blanking step using circular saw the stick of setting length and weight
Material.
In some embodiments, in the ball blast step, shot-blasting machine is rotated using motor impeller body, leans on centrifugal force
Effect the shot of diameter 0.6mm is thrown to the surface of bar.
In some embodiments, the proportion of each slot solution in the phosphorus saponification treatment step are as follows: the burning in degreasing bath
Alkali concentration is 40-60 grams per liter；Sulfuric acid concentration in descaling bath is 10%-20%；Total acidity is 40-55 point in Phosphating Slot；Saponification
Saponification liquor concentration is 1.5-2.5 point in slot.
In some embodiments, modifier treatment is heat treatment carburizing hardening and tempering process, and the oil quenching temperature of modifier treatment is 90
℃。
It in some embodiments, further include finishing processing, the finishing processing includes groove milling, bores aperture and La Nei
Spline.
It has the advantage that: the forging temperature of cold forging is room temperature, product tissue crystal grain is more refined, surface quality non-oxidation,
Decarburization, dimensional accuracy is high, and surface roughness is low, at present phosphorus saponification process lubricant technology technical maturity, die life
It substantially increases.Cold-forging technique blanking material cost has saved 10.9%, and process energy consumption has saved 15%, and machining allowance subtracts
It is few, cutting effect is improved, cold forging prevents the generation of forging defect, and product size precision improves, and surface roughness reduces, mould
The service life of tool improves 18%.
Detailed description of the invention
Fig. 1 is the blanking of the cold-forging technique of the clutch sleeve of an embodiment of the present invention, cold forging, bores inner hole, set boring, set
Outside, groove milling, brill aperture and the structural schematic diagram for drawing workpiece corresponding to internal spline.
Specific embodiment
A kind of cold-forging technique of clutch sleeve, includes the following steps:
Blanking: blank is cut into the bar of setting length and weight using circular saw.
Spheroidizing: bar is fitted into well formula resistance furnace, after being evacuated to air pressure≤- 0.08MPa, keeps pressing for 20 minutes
Power does not rise, and confirms and is heated to 300-400 DEG C after the retort air-tightness of well formula resistance furnace is intact, opens valve and exclude in furnace gas
Moisture after inflated with nitrogen to 0.1MPa, is begun to warm up, and is heated, is kept the temperature and retort pressure keeps 0.1-0.2MPa, heating temperature when slow cooling
765 DEG C of degree, soaking time 4.5 hours, tapping temperature≤350 DEG C.
Ball blast: Shot Blasting is carried out to the surface of bar, shot-blasting machine is rotated using motor impeller body, by centrifugal force
The shot of diameter 0.6mm is thrown to the surface of bar by effect, and the surface of bar is made to have roughness.
Pre-treatment: phosphorus saponification process in surface is carried out to the bar after ball blast, each slot in phosphorus saponification treatment step is molten
The proportion of liquid are as follows: the concentration of caustic soda in degreasing bath is 40-60 grams per liter；Sulfuric acid concentration in descaling bath is 10%-20%；Phosphatization
Total acidity is 40-55 point in slot；Saponification liquor concentration is 1.5-2.5 point in soap tank.Bar is successively immersed in order and is configured
Phosphating solution and saponification liquor in, billet surface formed phospholeum film, play lubricating action, the roughness of billet surface makes phosphatization
Liquid and saponification liquor are attached to billet surface, form surface lubrication layer.
Cold forging: by bar be put into it is counter force down mould, upper mold downlink squeezes bar, shapes bar；
It bores inner hole: bar being clamped on Drilling machines bench, is drilled with drill bit to bar.
Modifier treatment: modifier treatment is heat treatment carburizing hardening and tempering process, is warming up to 880 DEG C → carburizing → quenching → rear cleaning
→ cooling → tempering temperature is 545 DEG C；Oil quenching temperature is 90 DEG C.
Cover boring: with numerically controlled lathe by all inner holes of product boring.
Set is outer: with numerically controlled lathe by all outer circles of product turning.
It further include finishing processing in addition to above-mentioned steps, the finishing processing includes groove milling, bores aperture and La Nei flower
Key.
With loading and unloading, cold forging, inner hole is bored, set boring, cover outer, groove milling, bore aperture and draws workpiece such as Fig. 1 corresponding to internal spline
It is shown.
Above-described is only some embodiments of the present invention.To those skilled in the art, it is not departing from
Under the premise of the invention is conceived, various modifications and improvements can be made, and these are all within the scope of protection of the present invention.
Claims (6)
1. the cold-forging technique of clutch sleeve, which comprises the steps of:
Blanking: blank is cut into the bar of setting length and weight；
Spheroidizing: bar is fitted into well formula resistance furnace, after being evacuated to air pressure≤- 0.08MPa, keeps 20 minutes pressure not
Rise, confirm and be heated to 300-400 DEG C after the retort air-tightness of well formula resistance furnace is intact, opens the water in valve exclusion furnace gas
Point, it after inflated with nitrogen to 0.1MPa, begins to warm up, heats, keeps the temperature and retort pressure keeps 0.1-0.2MPa, heating temperature when slow cooling
765 DEG C, soaking time 4.5 hours, tapping temperature≤350 DEG C；
Ball blast: Shot Blasting is carried out to the surface of bar, makes the surface of bar that there is roughness；
Pre-treatment: phosphorus saponification process in surface is carried out to the bar after ball blast, bar is successively immersed in order configured
In phosphating solution and saponification liquor, billet surface forms phospholeum film, plays lubricating action, the roughness of billet surface makes phosphating solution
It is attached to billet surface with saponification liquor, forms surface lubrication layer；
Cold forging: by bar be put into it is counter force down mould, upper mold downlink squeezes bar, shapes bar；
It bores inner hole: bar being clamped on Drilling machines bench, is drilled with drill bit to bar；
Modifier treatment: being warming up to 880 DEG C → carburizing → quenching → rear cleaning → cooling → tempering temperature is 545 DEG C；
Cover boring: with numerically controlled lathe by all inner holes of product boring；
Set is outer: with numerically controlled lathe by all outer circles of product turning.
2. the cold-forging technique of clutch sleeve according to claim 1, which is characterized in that use circular saw in blanking step
Blank is cut into the bar of setting length and weight.
3. the cold-forging technique of clutch sleeve according to claim 1, which is characterized in that in the ball blast step, ball blast
Machine is rotated using motor impeller body, and the shot of diameter 0.6mm is thrown to the surface of bar by the effect by centrifugal force.
4. the cold-forging technique of clutch sleeve according to claim 1, which is characterized in that in the phosphorus saponification treatment step
Each slot solution proportion are as follows: concentration of caustic soda in degreasing bath is 40-60 grams per liter；Sulfuric acid concentration in descaling bath is 10%-
20%；Total acidity is 40-55 point in Phosphating Slot；Saponification liquor concentration is 1.5-2.5 point in soap tank.
5. the cold-forging technique of clutch sleeve according to claim 1, which is characterized in that the modifier treatment is heat treatment
Carburizing hardening and tempering process, the oil quenching temperature of modifier treatment are 90 DEG C.
6. the cold-forging technique of clutch sleeve according to claim 1, which is characterized in that further include finishing processing, institute
Finishing processing is stated to include groove milling, bore aperture and draw internal spline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710343319.8A CN107030453B (en) | 2017-05-16 | 2017-05-16 | The cold-forging technique of clutch sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710343319.8A CN107030453B (en) | 2017-05-16 | 2017-05-16 | The cold-forging technique of clutch sleeve |
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| Publication Number | Publication Date |
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| CN107030453A CN107030453A (en) | 2017-08-11 |
| CN107030453B true CN107030453B (en) | 2019-03-22 |
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| CN109676321B (en) * | 2017-10-18 | 2021-10-15 | 无锡市人防防护设备有限公司 | Manufacturing process of closed hot galvanizing junction box |
| CN108231459A (en) * | 2018-01-05 | 2018-06-29 | 万沙电气有限公司 | A kind of connector contact moulding process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876858A (en) * | 2012-09-20 | 2013-01-16 | 洛阳鼎辉特钢制品股份有限公司 | Spheroidizing annealing process of GCr15 ball bearing steels based on severe-convection protective gas |
| CN104400364A (en) * | 2014-10-10 | 2015-03-11 | 四川华庆机械有限责任公司 | Extrusion processing method for external star wheel |
| CN106378594A (en) * | 2016-11-17 | 2017-02-08 | 奇精机械股份有限公司 | Preparing method for automobile chain wheel |
| CN106623744A (en) * | 2016-12-29 | 2017-05-10 | 兴化市鑫翔机械有限公司 | Cold-temperature extrusion preparation technology of 31-tooth sliding engaging sleeve engaging teeth |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4629816B2 (en) * | 1999-08-20 | 2011-02-09 | 株式会社神戸製鋼所 | High strength bolt excellent in delayed fracture resistance and method for producing the same |
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- 2017-05-16 CN CN201710343319.8A patent/CN107030453B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876858A (en) * | 2012-09-20 | 2013-01-16 | 洛阳鼎辉特钢制品股份有限公司 | Spheroidizing annealing process of GCr15 ball bearing steels based on severe-convection protective gas |
| CN104400364A (en) * | 2014-10-10 | 2015-03-11 | 四川华庆机械有限责任公司 | Extrusion processing method for external star wheel |
| CN106378594A (en) * | 2016-11-17 | 2017-02-08 | 奇精机械股份有限公司 | Preparing method for automobile chain wheel |
| CN106623744A (en) * | 2016-12-29 | 2017-05-10 | 兴化市鑫翔机械有限公司 | Cold-temperature extrusion preparation technology of 31-tooth sliding engaging sleeve engaging teeth |
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| CN107030453A (en) | 2017-08-11 |
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Address after: 224100 No. 5 Xikang Road, Dafeng Development Zone, Yancheng City, Jiangsu Applicant after: Jiangsu Chuangyi Precision Forging Co., Ltd. Address before: 224100 Xikang South Road, Yancheng City Development Zone, Jiangsu Province, No. 5 Applicant before: Jiangsu Chuangyi Precision Forging Co., Ltd. |
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