CN102417962A - High-efficiency artificial aging heat treatment method - Google Patents
High-efficiency artificial aging heat treatment method Download PDFInfo
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- CN102417962A CN102417962A CN201010294626XA CN201010294626A CN102417962A CN 102417962 A CN102417962 A CN 102417962A CN 201010294626X A CN201010294626X A CN 201010294626XA CN 201010294626 A CN201010294626 A CN 201010294626A CN 102417962 A CN102417962 A CN 102417962A
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- insulating
- artificial aging
- treatment method
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- Heat Treatment Of Articles (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a high-efficiency artificial aging heat treatment method which comprises the following steps of: roughly processing inner holes and outer circles of a liner blank, and then, putting the liner blank in a tempering furnace; heating to 250 DEG C at the speed not higher than 50DEG C/hour, and insulating for 1 hour; uniformly heating to 450 DEG C, and insulating for 1 hour; uniformly heating to 540 DEG C, and insulating for 2 hours; and cooling to about 260 DEG C at the speed lower than 30DEG C/hour in the furnace, and then, discharging. The treatment process eliminates the heat stress and transformation stress in a casting process, eliminates the mechanical stress in a cutting process, ensures the elimination of the internal stress of products, and reduces the occurrence of failure events.
Description
Affiliated technical field
The present invention relates to cylinder sleeve and eliminate the thermal treatment process of the stress that its casting and processing produced.
Background technology
Cylinder sleeve is the core part of mover; Also be consumable accessory, thus higher to the performance requriements of cylinder sleeve, but because mostly cylinder sleeve is to be formed by rotational casting; In mechanical processing process; Chipping allowance is bigger in the roughing process, and the internal stress of cylinder sleeve is bigger, and the thermal treatment process of existing elimination internal stress can not once be eliminated internal stress preferably.
Summary of the invention
In order to improve the use properties of cylinder sleeve product; Reduce cylinder sleeve installation back because internal stress discharges the Internal Hole Deformation that causes; The present invention provides a kind of thermal treatment process that eliminates stress, and can eliminate the casting of cylinder sleeve and the internal stress that roughing produces preferably through a thermal treatment.
The technical solution adopted for the present invention to solve the technical problems is after liner blank casting forming and roughing cut processing, its work in-process to be eliminated the art breading of internal stress.
The invention has the beneficial effects as follows; Cylinder sleeve can once be eliminated the thermal stresses of casting generation and the stress that cut produces through such thermal treatment; Reduced the repeatedly tempering of adopting in order to eliminate stress; The Internal Hole Deformation of stopping the stress relief after product is installed and producing, the failure event such as scuffing of cylinder bore of eliminating product take place.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
This accompanying drawing is the thermal treatment process general flow chart that offsets except that the cylinder sleeve internal stress.
The practical implementation method
The technical solution adopted for the present invention to solve the technical problems is: behind liner blank process roughing endoporus and the rough turn cylindrical, put into tempering stove, be warming up to 250 ℃ per hour not to be higher than 50 ℃ speed; Be incubated 1 hour; Evenly be warming up to 450 ℃, be incubated 1 hour, evenly be warming up to 540 ℃; Be incubated 2 hours, come out of the stove to be cooled to about 260 ℃ less than 30 ℃ speed with stove.Such thermal treatment process has been eliminated the mechanical stress in the thermal stresses in the castingprocesses, transformation stress and the working angles, has guaranteed the elimination of product internal stress, guarantees that the failure event of avoiding installing after using that stress relief caused takes place.
Claims (1)
1. an artificial aging thermal treatment process is characterized in that: be warming up to 250 ℃ per hour not to be higher than 50 ℃ speed, be incubated 1 hour; Evenly be warming up to 450 ℃, be incubated 1 hour, evenly be warming up to 540 ℃; Be incubated 2 hours, come out of the stove to be cooled to about 260 ℃ less than 30 ℃ speed with stove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010294626XA CN102417962A (en) | 2010-09-27 | 2010-09-27 | High-efficiency artificial aging heat treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010294626XA CN102417962A (en) | 2010-09-27 | 2010-09-27 | High-efficiency artificial aging heat treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102417962A true CN102417962A (en) | 2012-04-18 |
Family
ID=45942605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010294626XA Pending CN102417962A (en) | 2010-09-27 | 2010-09-27 | High-efficiency artificial aging heat treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102417962A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002109A (en) * | 2016-08-01 | 2016-10-12 | 浙江金驰机械有限公司 | Automobile synchronizer gear sleeve manufacturing technology and aging treatment machine |
| CN114227166A (en) * | 2021-12-20 | 2022-03-25 | 贵阳华丰航空科技有限公司 | Slotted cylinder head screw manufacturing process |
-
2010
- 2010-09-27 CN CN201010294626XA patent/CN102417962A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106002109A (en) * | 2016-08-01 | 2016-10-12 | 浙江金驰机械有限公司 | Automobile synchronizer gear sleeve manufacturing technology and aging treatment machine |
| CN106002109B (en) * | 2016-08-01 | 2018-01-16 | 浙江金驰机械有限公司 | The production technology and timeliness processor of a kind of gear sleeve of automobile synchronizer |
| CN114227166A (en) * | 2021-12-20 | 2022-03-25 | 贵阳华丰航空科技有限公司 | Slotted cylinder head screw manufacturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Jia Weizhen Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Jia Weizhen Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120418 |