CN2224056Y - Thermal radiating tube with protection coating - Google Patents
Thermal radiating tube with protection coating Download PDFInfo
- Publication number
- CN2224056Y CN2224056Y CN 94248233 CN94248233U CN2224056Y CN 2224056 Y CN2224056 Y CN 2224056Y CN 94248233 CN94248233 CN 94248233 CN 94248233 U CN94248233 U CN 94248233U CN 2224056 Y CN2224056 Y CN 2224056Y
- Authority
- CN
- China
- Prior art keywords
- protection coating
- radiating tube
- protective layer
- heat radiation
- thermal radiating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a thermal radiating tube with protection coating for a vacuum sintering furnace, which adopts evenly welding process that a layer of protection coating with the thickness of 3-5 mm is attached on the outer surface of the radiating tube. The protection coating is made of a Cr 25Ni 21 material with the performance of high temperature and oxide etch resistance. The thermal radiating tube with protection coating is used for 150 times in a cycle of high temperature and normal temperature, which enhances equipment utilization rate and lowers production cost.
Description
The utility model belongs to the design of parts in addition of vacuum sintering equipment, particularly a kind of heat radiation tube that is applicable to the band protective layer that each class pipe type vacuum sintering furnace is used.
In the powder metallurgy industry, the vacuum sintering processing is the critical process in the product processing, and it plays decisive action to the performance and the quality of product.Because the heat radiation tube outside surface of agglomerating plant exposes all the time in atmosphere, the surface is easy to oxidation, delamination, particularly under high temperature-normal temperature cycle operation condition, generally be to use about 30 times,, and make intensity reduce seepage just owing to surface oxidation, delamination, influence quality product, so that scrap.
For overcoming above-mentioned shortcoming, the purpose of this utility model provides a kind of heat radiation tube that has than the band protective layer of strong anti-oxidation ability, to prolong service life of equipment, guarantees product performance and quality.
Fig. 1, heat radiation tube structure iron
Among the figure: 1, joint flange; 2, radiator tube; 3, protective layer.
How now narrate the purpose of this utility model in conjunction with the accompanying drawings and embodiments realizes.
As shown in Figure 1, the utility model mainly is made up of the protective layer 3 of radiator tube 2 and outside surface thereof, and pipe end has the joint flange 1 that connects usefulness.
The radiator tube of general vacuum sintering furnace is to be made by stainless steel tube (1Cr18Ni9Ti), not corrosion under the normal temperature state, not delamination, but when being operated in normal temperature-high temperature (normal temperature-high temperature 1,150 one waters and cools-normal temperature) repeatedly during recurrent state, the general use 30 times, very 15 left and right sides of person radiator tube outside surface just begins oxidation delamination, bending, seepage so that scrap.
The utility model is to adopt the method for evenly welding to adhere to one deck at radiator tube 2 outside surfaces to have the material of high antioxygenic property to form protective layer 3, so just becomes a kind of heat radiation tube of novel band protective layer.Protective layer adopts the Cr25Ni21 material evenly to be welded in tube outer surface, and thickness is 3-5mm.
Heat radiation tube adheres to protective layer and is equivalent to tube wall and thickens, thereby has put forward hot strength, simultaneously because protection coating materials has excellent high-temperature oxidation resistant corrosive nature, the experiment proved that the utility model recycles at 1150 ℃ of high temperature one normal temperature and can reach 150 times.This has just prolonged the work-ing life of radiator tube greatly, has improved usage ratio of equipment, has reduced the cost of product.
Claims (4)
1, the heat radiation tube of the band protective layer used of a kind of vacuum sintering furnace is characterized in that the outside surface of radiator tube (2) has one deck protective layer (2).
2, heat radiation tube according to claim 1 is characterized in that described protective layer (2) is that evenly welding forms.
3, heat radiation tube according to claim 1 and 2 is characterized in that described protective layer (2) adopts the Cr25Ni21 material.
4, heat radiation tube according to claim 1 and 2 is characterized in that described overcoat thickness is 3-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248233 CN2224056Y (en) | 1994-12-26 | 1994-12-26 | Thermal radiating tube with protection coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94248233 CN2224056Y (en) | 1994-12-26 | 1994-12-26 | Thermal radiating tube with protection coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2224056Y true CN2224056Y (en) | 1996-04-10 |
Family
ID=33853221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94248233 Expired - Fee Related CN2224056Y (en) | 1994-12-26 | 1994-12-26 | Thermal radiating tube with protection coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2224056Y (en) |
-
1994
- 1994-12-26 CN CN 94248233 patent/CN2224056Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |