CN203065536U - Device for improving taper of bearing ring in heat treatment process - Google Patents
Device for improving taper of bearing ring in heat treatment process Download PDFInfo
- Publication number
- CN203065536U CN203065536U CN 201320049113 CN201320049113U CN203065536U CN 203065536 U CN203065536 U CN 203065536U CN 201320049113 CN201320049113 CN 201320049113 CN 201320049113 U CN201320049113 U CN 201320049113U CN 203065536 U CN203065536 U CN 203065536U
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- oil
- bearing ring
- heat treatment
- treatment process
- guipure
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Abstract
The utility model relates to a device for improving taper of a bearing ring in a heat treatment process. The device comprises an oil quenching tank, wherein a blanking guide plate connected with a quenching furnace mesh belt is arranged above the oil quenching tank; a motion mesh belt with a baffle and a lifting mesh belt communicated to the outside of the oil quenching tank are arranged in the oil quenching tank; a U-shaped oil injection pipeline is placed above the motion mesh belt; oil injection pipelines penetrate through the middle of the motion mesh belt; and oil injection holes are formed in the oil injection pipelines. The taper deformation is caused by too large cooling speed difference at the two ends of the ring in the quenching cooling process, so that the taper deformation can be reduced only by allowing cooling speeds at the two ends of the ring to be approximate. The cooling device can be used for adjusting the oil injection magnitude for products in different heights. The cooling device capable of adjusting the oil injection magnitude can be used for effectively allowing the cooling speeds at the two ends of the ring to be balanced, so that the taper deformation of the bearing ring is reduced.
Description
Technical field
The utility model relates to a kind of thermal treatment refrigerating unit, and especially a kind of bearing ring heat treatment process tapering improves device.
Background technology
Known, bearing ring can produce various deformation in heat treatment process, mainly contain size swell or dwindle, ovalizing deflection, taper deformation and buckling deformation etc.These distortion cause bearing ring precise decreasing in grinding process the most at last, even become waste product.Wherein, taper deformation is the important factor that influences quality product.The taper deformation that produces after the bearing ring thermal treatment, be owing to the speed of cooling at two ends in the quench cooled process differs too big in essence, cause the asynchronism(-nization) that the cold shrinkage in two ends is different and arrival Ms is ordered, the result has produced very big thermal stresses and structural stress at two ends.When a certain moment thermal stresses or structural stress when a certain end reaches material yield intensity, this end certainly leads to the viscous deformation that stretches or compress, wherein thermal stresses generation compressive plastic deformation radially dwindles, and structural stress then produces the stretching plastic deformation and radially swells.In addition, because the moment of martensitic transformation can be brought out superplasticity, if thermal shrinkage stress this moment is very big just, just very likely produce the compressive plastic deformation that radially dwindles, thereby partly or entirely offset the caused volumetric expansion of martensitic transformation, even also can appear to show as radially after martensitic transformation finishes and dwindle.
My company is excessive in order to solve taper deformation, influences this technical barrier of product percent of pass, analyzes by the generation principle to tapering, and the refrigerating unit transformation of heat-treatment production line oil-quenching tank is solved the tapering problem.
Summary of the invention
In order to realize goal of the invention described in the utility model, the purpose of this utility model provides a kind of refrigerating unit of oil-quenching tank to reduce the tapering that the high carbon chromium bearing ring produces in heat treatment process.
For achieving the above object, the utility model adopts following technical scheme: a kind of bearing ring heat treatment process tapering improves device, comprise oil-quenching tank, the blanking guide plate that connects the quenching furnance guipure is set above oil-quenching tank, be provided with the play guipure of baffle plate and the lifting guipure that leads to the oil groove outside in oil-quenching tank inside, above the play guipure, place U-shaped oil spout pipeline, at the interspersed oil spout pipeline in the centre of play guipure, on the oil spout pipeline nozzle opening is set.
U-shaped oil spout pipeline horizontal positioned described in the utility model evenly arranges nozzle opening on internal surface.
The oil spout pipeline that interts in the middle of the play guipure described in the utility model is connected by connecting tube.
The oil spout pipeline that intert the centre of play guipure described in the utility model is 4.
The pitch of holes of nozzle opening is 5cm on the oil spout pipeline described in the utility model.
Adopt aforesaid technical scheme, the utlity model has following superiority:
Since taper deformation is the speed of cooling at lasso two ends in the quench cooled process differ too big due to, lasso two ends speed of cooling is approached, just might reduce taper deformation.Above refrigerating unit can be adjusted the oil spout size at the product of different heights.By regulating the refrigerating unit of oil spout size, can effectively make lasso two ends speed of cooling reach balance, thereby reduce the taper deformation of bearing ring, taper deformation can reduce about 50% after the increase oil spout like products thermal treatment afterwards.
Description of drawings
Fig. 1 is that the play guipure is at the oil groove position view;
Fig. 2 is play guipure top refrigerating unit vertical view;
Fig. 3 is play guipure intercooler unit side-view.
Among the figure: 1, oil-quenching tank; 2, play guipure; 3, baffle plate; 4, blanking guide plate; 5, promote guipure; 6, quenching furnance guipure; 7, oil spout direction; 8, oil spout pipeline; 9, connecting tube; 10, nozzle opening; 11, U-shaped oil spout pipeline.
Embodiment
One: 6416 overcoat tapering of embodiment improves device and starts and the tapering contrast that does not start:
Unit: 0.01mm
Two: 6317 overcoat taperings of embodiment improve device and start and the tapering contrast that does not start:
Unit: 0.01mm
Claims (5)
1. a bearing ring heat treatment process tapering improves device, comprise oil-quenching tank (1), the blanking guide plate (4) that connects quenching furnance guipure (6) is set in the top of oil-quenching tank (1), be provided with the play guipure (2) of baffle plate (3) in oil-quenching tank (1) inside and lead to the outside lifting guipure (5) of oil-quenching tank (1), it is characterized in that, top in play guipure (2), place U-shaped oil spout pipeline (11), at the interspersed oil spout pipeline (8) in the centre of play guipure (2), nozzle opening (10) is set on the oil spout pipeline.
2. bearing ring heat treatment process tapering according to claim 1 improves device, it is characterized in that,
Described U-shaped oil spout pipeline (8) horizontal positioned evenly arranges nozzle opening (10) on internal surface.
3. bearing ring heat treatment process tapering according to claim 1 and 2 improves device, it is characterized in that, the oil spout pipeline (8) that interts in the centre of play guipure (2) is connected by connecting tube (9).
4. improve device according to any described bearing ring heat treatment process tapering in the claim 3, it is characterized in that, the oil spout pipeline (8) that interts in the centre of play guipure (2) is 4.
5. improve device according to the bearing ring heat treatment process tapering described in the claim 4, it is characterized in that, the pitch of holes that described oil spout pipeline (8) is gone up nozzle opening (10) is 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320049113 CN203065536U (en) | 2013-01-30 | 2013-01-30 | Device for improving taper of bearing ring in heat treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320049113 CN203065536U (en) | 2013-01-30 | 2013-01-30 | Device for improving taper of bearing ring in heat treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203065536U true CN203065536U (en) | 2013-07-17 |
Family
ID=48764350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320049113 Expired - Fee Related CN203065536U (en) | 2013-01-30 | 2013-01-30 | Device for improving taper of bearing ring in heat treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203065536U (en) |
-
2013
- 2013-01-30 CN CN 201320049113 patent/CN203065536U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20180130 |