CN105296733A - Heat treatment technology for universal ball shell - Google Patents
Heat treatment technology for universal ball shell Download PDFInfo
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- CN105296733A CN105296733A CN201510819637.8A CN201510819637A CN105296733A CN 105296733 A CN105296733 A CN 105296733A CN 201510819637 A CN201510819637 A CN 201510819637A CN 105296733 A CN105296733 A CN 105296733A
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Abstract
The invention discloses a heat treatment technology for a universal ball shell. The heat treatment technology comprises the following steps that a carburized steel material with a certain mass percent is selected for forging a universal ball shell blank; the blank is loaded into a furnace, the temperature is evenly increased to 950 DEG C, the temperature increasing time is 4 hours, and the heat preserving time is 3.2 hours; cooling is conducted to the temperature lower than 100 DEG C; heating is conducted to the temperature of 925 DEG C, temperature increasing exhausting is conducted, the time of temperature increasing exhausting is 2.5 hours, and the dripping speed of a seeping agent is 100 drops per minute; the temperature of 925 DEG C is kept, heat preserving carburization is conducted, the time for heat preserving carburization is 4 hours, and 210 drops of the seeping agent are dropped per minute; the temperature of the furnace continues to be kept at the 925 DEG C, heat preserving diffusion is conducted, the time of heat preserving diffusion is 3 hours, and 155 drops of the seeping agent are dropped per minute; cooling is conducted to the temperature lower than 100 DEG C; fast heating is conducted to the temperature of 840 DEG C, heat preserving is conducted for 0.8 hour, and cooling is conducted to the temperature lower than 100 DEG C through fast quenching oil; and fast heating is conducted to the temperature of 230 DEG C, heat preserving is conducted for 3.5 hours, and cooling is conducted to the temperature lower than 100 DEG C through air.
Description
Technical field
The present invention relates to a kind of universal joint spherical shell thermal treatment process, belong to Car Drive Shaft constant velocity cardan joint product manufacturing technical field.
Background technology
Universal joint is automobile chassis key components and parts, and universal joint and transmission shaft combine, and are called cardan gear; On the vehicle that front engine rear wheel drives, cardan gear is arranged between transmission output shaft and main reducing gear of drive axle input shaft; And the vehicle that front engine, front drives eliminates transmission shaft, universal joint is arranged on not only to be responsible for driving but also to be responsible between the front axle half shaft that turns to and wheel, and its major function is when main drive shaft and driven shaft generation angular travel, can flexible communication power and torque.Constant velocity universal transmission mechanism is generally made up of fixing type equal speed universal joint, sliding constant velocity cardan joint and tunnel shaft.Fixing type equal speed universal joint is installed on wheel side, and sliding constant velocity cardan joint is installed on differential mechanism side, and tunnel shaft is used for universal-joint, plays the effect of transmitting motion and torque.Sliding constant velocity cardan joint comprises overcoat and rolling element, the slip of tunnel shaft and swing, rolling element can be driven to slide and swing, thus transmitting sliding power and torque.
Spherical shell universal joint is a kind of fixing type equal speed universal joint, and it mainly comprises spherical shell is also out star wheel, inner race, ball pin retainer and steel ball.In order to improve the cutting ability of universal joint spherical shell rough forging, so that carry out car, Milling Machining, need to carry out normalizing treatment to universal ball shell workpiece; In order to improve the surface hardness of universal joint spherical shell rough forging and improve its metallurgical structure, so that carry out ground finish, need to carry out carburizing, Quench and temper process to universal ball shell workpiece; For the universal ball shell workpiece of unlike material, need to develop specific thermal treatment process, need concrete optimization heat treated temperature, soaking time and the type of cooling.
Summary of the invention
The present invention for the deficiency that prior art exists, provides a kind of universal joint spherical shell thermal treatment process, meets actual operation requirements just.
For solving the problem, the technical solution used in the present invention is as follows:
A kind of universal joint spherical shell thermal treatment process, comprises the following steps:
Step one, select converted steel material forging universal joint spherical shell blank containing following mass percent component: carbon 0.17% ~ 0.23%, silicon 0.17% ~ 0.37%, manganese 0.80% ~ 1.10%, chromium 1.00% ~ 1.30%, titanium 0.04% ~ 0.10%, sulphur is less than or equal to 0.035%, phosphorus is less than or equal to 0.035%, nickel is less than or equal to 0.030%, and copper is less than or equal to 0.030%, balance iron;
Step 2, workpiece shove charge step one obtained at the uniform velocity are warming up to 950 DEG C, and the heating-up time is 4 hours, and soaking time is 3.2 hours;
Within step 3, work-piece cools to 100 DEG C that step 2 is obtained;
Step 4, by step 3 obtain universal ball shell workpiece be heated to 925 DEG C carry out intensifications exhaust, heat up be vented time be 2.5 hours, the rate of addition of penetration enhancer is per minute 100;
Step 5, universal ball shell workpiece shove charge step 4 obtained, keep 925 DEG C and carry out insulation carburizing, and the time of insulation carburizing is 4 hours, and the rate of addition of penetration enhancer is per minute 210;
Make the furnace temperature of universal ball shell workpiece continue maintenance 925 DEG C after step 6, step 5 terminate, carry out insulation diffusion, the time of insulation diffusion is 3 hours, and the rate of addition of penetration enhancer is per minute 155;
First universal ball shell workpiece is made to naturally cool within 100 DEG C after step 7, step 6 terminate;
Step 8, to step 7 obtain universal ball shell workpiece carry out quench treatment: by workpiece heat to 840 DEG C, be incubated 0.8 hour, be then cooled within 100 DEG C by fast quenching oil;
Step 9, temper is carried out to the universal ball shell workpiece that step 8 obtains: by workpiece heat to 230 DEG C, be incubated 3.5 hours, then by within air cooling to 100 DEG C.
Concrete optimally described step 3 is, is undertaken air-cooled, be cooled to the workpiece that step 2 obtains within 100 DEG C in 6 minutes ~ 8 minutes.
Concrete optimally described step 7 is, first makes universal ball shell workpiece together drop to 850 DEG C with furnace temperature after step 6 terminates, and then takes out universal ball shell workpiece and is placed in air and carries out naturally cooling.
Concrete optimally described step 8 is, carries out quench treatment: by workpiece heat to 840 DEG C, be incubated 0.8 hour, be then cooled within 100 DEG C by fast quenching oil, cooling time is 8 seconds ~ 10 seconds to the universal ball shell workpiece that step 7 obtains.
Concrete optimally described step 9 is, carries out temper: by workpiece heat to 230 DEG C, be incubated 3.5 hours to the universal ball shell workpiece that step 8 obtains, and then by within air cooling to 100 DEG C, cooling time is 100 seconds ~ 150 seconds.
Compared with prior art, implementation result of the present invention is as follows in the present invention:
A kind of universal joint spherical shell thermal treatment process of the present invention, the universal ball shell workpiece hardness after normalizing is 182HB ~ 212HB, meets the durometer level of 179HB ~ 217HB of car, Milling Machining requirement; Universal ball shell workpiece case depth after carburizing treatment can reach 1.2 millimeters to 1.5 millimeters, universal ball shell workpiece surface hardness after Q-tempering process can reach 60HRC ~ 62HRC, meet the technical requirements of ground finish, metallographic structure meets 2 ~ 4 grades of organizational requirements of QC/T262-1999 standard regulation; Processing quality is easy to control, good product performance.
Embodiment
Below in conjunction with specific embodiments content of the present invention is described.
Specific embodiment 1
A kind of universal joint spherical shell thermal treatment process described in the present embodiment, comprises the following steps:
Step one, select converted steel material forging universal joint spherical shell blank containing following mass percent component: carbon 0.17% ~ 0.23%, silicon 0.17% ~ 0.37%, manganese 0.80% ~ 1.10%, chromium 1.00% ~ 1.30%, titanium 0.04% ~ 0.10%, sulphur is less than or equal to 0.035%, phosphorus is less than or equal to 0.035%, nickel is less than or equal to 0.030%, and copper is less than or equal to 0.030%, balance iron;
Step 2, workpiece shove charge step one obtained at the uniform velocity are warming up to 950 DEG C, and the heating-up time is 4 hours, and soaking time is 3.2 hours;
Step 3, by step 2 obtain workpiece carry out air-cooled, be cooled in 6 minutes ~ 8 minutes within 100 DEG C;
Step 4, by step 3 obtain universal ball shell workpiece be heated to 925 DEG C carry out intensifications exhaust, heat up be vented time be 2.5 hours, the rate of addition of penetration enhancer is per minute 100;
Step 5, universal ball shell workpiece shove charge step 4 obtained, keep 925 DEG C and carry out insulation carburizing, and the time of insulation carburizing is 4 hours, and the rate of addition of penetration enhancer is per minute 210;
Make the furnace temperature of universal ball shell workpiece continue maintenance 925 DEG C after step 6, step 5 terminate, carry out insulation diffusion, the time of insulation diffusion is 3 hours, and the rate of addition of penetration enhancer is per minute 155;
First make universal ball shell workpiece together drop to 850 DEG C with furnace temperature after step 7, step 6 terminate, then take out universal ball shell workpiece and be placed in air and carry out naturally cooling;
Step 8, to step 7 obtain universal ball shell workpiece carry out quench treatment: by workpiece heat to 840 DEG C, be incubated 0.8 hour, be then cooled within 100 DEG C by fast quenching oil, cooling time is 8 seconds ~ 10 seconds;
Step 9, temper is carried out to the universal ball shell workpiece that step 8 obtains: by workpiece heat to 230 DEG C, be incubated 3.5 hours, then by within air cooling to 100 DEG C, cooling time is 100 seconds ~ 150 seconds.
Universal ball shell workpiece hardness after normalizing is 196HB ~ 208HB, meets the durometer level of 179HB ~ 217HB of car, Milling Machining requirement; Universal ball shell workpiece case depth after carburizing treatment can reach 1.3 millimeters to 1.6 millimeters, universal ball shell workpiece surface hardness after Q-tempering process can reach 60HRC ~ 62HRC, meet the technical requirements of ground finish, metallographic structure meets 2 ~ 4 grades of organizational requirements of QC/T262-1999 standard regulation.
Specific embodiment 2
A kind of universal joint spherical shell thermal treatment process described in the present embodiment, comprises the following steps:
Step one, select converted steel material forging universal joint spherical shell blank containing following mass percent component: carbon 0.17% ~ 0.23%, silicon 0.17% ~ 0.37%, manganese 0.80% ~ 1.10%, chromium 1.00% ~ 1.30%, titanium 0.04% ~ 0.10%, sulphur is less than or equal to 0.035%, phosphorus is less than or equal to 0.035%, nickel is less than or equal to 0.030%, and copper is less than or equal to 0.030%, balance iron;
Step 2, workpiece shove charge step one obtained at the uniform velocity are warming up to 950 DEG C, and the heating-up time is 4 hours, and soaking time is 3.2 hours;
Within step 3, work-piece cools to 100 DEG C that step 2 is obtained;
Step 4, by step 3 obtain universal ball shell workpiece be heated to 925 DEG C carry out intensifications exhaust, heat up be vented time be 2.5 hours, the rate of addition of penetration enhancer is per minute 100;
Step 5, universal ball shell workpiece shove charge step 4 obtained, keep 925 DEG C and carry out insulation carburizing, and the time of insulation carburizing is 4 hours, and the rate of addition of penetration enhancer is per minute 210;
Make the furnace temperature of universal ball shell workpiece continue maintenance 925 DEG C after step 6, step 5 terminate, carry out insulation diffusion, the time of insulation diffusion is 3 hours, and the rate of addition of penetration enhancer is per minute 155;
First universal ball shell workpiece is made to naturally cool within 100 DEG C after step 7, step 6 terminate;
Step 8, to step 7 obtain universal ball shell workpiece carry out quench treatment: by workpiece heat to 840 DEG C, be incubated 0.8 hour, be then cooled within 100 DEG C by fast quenching oil;
Step 9, temper is carried out to the universal ball shell workpiece that step 8 obtains: by workpiece heat to 230 DEG C, be incubated 3.5 hours, then by within air cooling to 100 DEG C.
Universal ball shell workpiece hardness after normalizing is 179HB ~ 205HB, meets the durometer level of 179HB ~ 217HB of car, Milling Machining requirement; Universal ball shell workpiece case depth after carburizing treatment can reach 1.2 millimeters to 1.4 millimeters, universal ball shell workpiece surface hardness after Q-tempering process can reach 59HRC ~ 61HRC, meet the technical requirements of ground finish, metallographic structure meets 2 ~ 4 grades of organizational requirements of QC/T262-1999 standard regulation.
Above content is detailed description made for the present invention in conjunction with specific embodiments, can not assert that the present invention specifically implements to be only limitted to these explanations; For those skilled in the art, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to the scope of protection of the invention.
Claims (5)
1. a universal joint spherical shell thermal treatment process, is characterized in that, comprises the following steps:
Step one, select converted steel material forging universal joint spherical shell blank containing following mass percent component: carbon 0.17% ~ 0.23%, silicon 0.17% ~ 0.37%, manganese 0.80% ~ 1.10%, chromium 1.00% ~ 1.30%, titanium 0.04% ~ 0.10%, sulphur is less than or equal to 0.035%, phosphorus is less than or equal to 0.035%, nickel is less than or equal to 0.030%, and copper is less than or equal to 0.030%, balance iron;
Step 2, workpiece shove charge step one obtained at the uniform velocity are warming up to 950 DEG C, and the heating-up time is 4 hours, and soaking time is 3.2 hours;
Within step 3, work-piece cools to 100 DEG C that step 2 is obtained;
Step 4, by step 3 obtain universal ball shell workpiece be heated to 925 DEG C carry out intensifications exhaust, heat up be vented time be 2.5 hours, the rate of addition of penetration enhancer is per minute 100;
Step 5, universal ball shell workpiece shove charge step 4 obtained, keep 925 DEG C and carry out insulation carburizing, and the time of insulation carburizing is 4 hours, and the rate of addition of penetration enhancer is per minute 210;
Make the furnace temperature of universal ball shell workpiece continue maintenance 925 DEG C after step 6, step 5 terminate, carry out insulation diffusion, the time of insulation diffusion is 3 hours, and the rate of addition of penetration enhancer is per minute 155;
First universal ball shell workpiece is made to naturally cool within 100 DEG C after step 7, step 6 terminate;
Step 8, to step 7 obtain universal ball shell workpiece carry out quench treatment: by workpiece heat to 840 DEG C, be incubated 0.8 hour, be then cooled within 100 DEG C by fast quenching oil;
Step 9, temper is carried out to the universal ball shell workpiece that step 8 obtains: by workpiece heat to 230 DEG C, be incubated 3.5 hours, then by within air cooling to 100 DEG C.
2. a kind of universal joint spherical shell thermal treatment process as claimed in claim 1, it is characterized in that, described step 3 is, is undertaken air-cooled, be cooled to the workpiece that step 2 obtains within 100 DEG C in 6 minutes ~ 8 minutes.
3. a kind of universal joint spherical shell thermal treatment process as claimed in claim 1, it is characterized in that, described step 7 is, first makes universal ball shell workpiece together drop to 850 DEG C with furnace temperature after step 6 terminates, and then takes out universal ball shell workpiece and is placed in air and carries out naturally cooling.
4. a kind of universal joint spherical shell thermal treatment process as claimed in claim 1, it is characterized in that, described step 8 is, quench treatment is carried out to the universal ball shell workpiece that step 7 obtains: by workpiece heat to 840 DEG C, be incubated 0.8 hour, then be cooled within 100 DEG C by fast quenching oil, cooling time is 8 seconds ~ 10 seconds.
5. a kind of universal joint spherical shell thermal treatment process as claimed in claim 1, it is characterized in that, described step 9 is, temper is carried out to the universal ball shell workpiece that step 8 obtains: by workpiece heat to 230 DEG C, be incubated 3.5 hours, then by within air cooling to 100 DEG C, cooling time is 100 seconds ~ 150 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510819637.8A CN105296733A (en) | 2015-11-24 | 2015-11-24 | Heat treatment technology for universal ball shell |
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| CN201510819637.8A CN105296733A (en) | 2015-11-24 | 2015-11-24 | Heat treatment technology for universal ball shell |
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| CN105296733A true CN105296733A (en) | 2016-02-03 |
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| CN201510819637.8A Pending CN105296733A (en) | 2015-11-24 | 2015-11-24 | Heat treatment technology for universal ball shell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255115A (en) * | 2017-08-11 | 2017-10-17 | 江西积裕实业有限公司 | A kind of straight-drawing pole bulb assembly |
| CN107487360A (en) * | 2017-08-11 | 2017-12-19 | 江西积裕实业有限公司 | A kind of motor turning drag link |
| CN110977357A (en) * | 2019-12-25 | 2020-04-10 | 台州浩尔工业有限公司 | Bell-shaped shell for universal joint and processing technology |
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| CN101131183A (en) * | 2007-07-17 | 2008-02-27 | 邹树林 | Manufacturing method for cross axle of universal coupling |
| CN102732705A (en) * | 2012-06-07 | 2012-10-17 | 黄幸 | Heat treatment method of ball cage for drive shaft |
| CN104975147A (en) * | 2015-07-06 | 2015-10-14 | 安徽索特汽车零部件有限公司 | Heat treatment technology of automobile outer joint bell-shaped shell |
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2015
- 2015-11-24 CN CN201510819637.8A patent/CN105296733A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN101131183A (en) * | 2007-07-17 | 2008-02-27 | 邹树林 | Manufacturing method for cross axle of universal coupling |
| CN102732705A (en) * | 2012-06-07 | 2012-10-17 | 黄幸 | Heat treatment method of ball cage for drive shaft |
| CN104975147A (en) * | 2015-07-06 | 2015-10-14 | 安徽索特汽车零部件有限公司 | Heat treatment technology of automobile outer joint bell-shaped shell |
Non-Patent Citations (2)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255115A (en) * | 2017-08-11 | 2017-10-17 | 江西积裕实业有限公司 | A kind of straight-drawing pole bulb assembly |
| CN107487360A (en) * | 2017-08-11 | 2017-12-19 | 江西积裕实业有限公司 | A kind of motor turning drag link |
| CN110977357A (en) * | 2019-12-25 | 2020-04-10 | 台州浩尔工业有限公司 | Bell-shaped shell for universal joint and processing technology |
| CN110977357B (en) * | 2019-12-25 | 2020-09-04 | 台州浩尔工业有限公司 | Bell-shaped shell for universal joint and processing technology |
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