CN101503786A - Vertical external heating induction heating vacuum carburizing furnace - Google Patents
Vertical external heating induction heating vacuum carburizing furnace Download PDFInfo
- Publication number
- CN101503786A CN101503786A CNA2008102424385A CN200810242438A CN101503786A CN 101503786 A CN101503786 A CN 101503786A CN A2008102424385 A CNA2008102424385 A CN A2008102424385A CN 200810242438 A CN200810242438 A CN 200810242438A CN 101503786 A CN101503786 A CN 101503786A
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- furnace
- carburizing
- chamber
- heating
- workpiece
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- 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.)
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- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to a vertical type external heating chamber induction heating vacuum carburizing furnace, which belongs to a novel vacuum carburizing furnace in the field of heat treatment industry. The heating chamber of the device is a vertical two-chamber structure mainly comprising a water cooled furnace wall casing, an intermediate frequency heating power supply muffle inner bag, an intermediate insulated door gate valve, a vacuumizing system, and the like. A cooling chamber mainly comprises a heat exchanger, a transformation fan baffler, an oil groove and furnace cover elevating system, and the like. A concrete implementing method comprises the following steps: adding a workpiece into a muffle tank; closing a furnace door and carrying out vacuumization; controlling the vacuum degree at -0.08 to +0.02 Mpa; and then raising the temperature to a carburizing temperature of 950 DEG C. For example, the cementation temperature of carbon hydrogen is 860 DEG C, and the flux and time of a cementation layer can be controlled through a flowmeter so as to determine the requirements of the carburizing layer of the workpiece. When the carburizing process is finished, the charging furnace door is opened to descend the workpiece directly into a quenching chamber for cooling so as to greatly save energy.
Description
Technical field
The present invention is the heat treatment industry field, particularly a kind of vacuum carburization apparatus.
Background technology
Present vacuum carburization is actually on the basis of vacuum air-quenching furnace and the improvement of making, and its assorted heating chamber has added the inflation system of a cover may command flow.Heating system also adopts resistive heating in process of production, and therefore the speed of heating is slower, and thermosteresis is big.Its structure has adopted no groom's jar structure again, so a large amount of carbon blacks that produce in this cementation process can pollute and influence heating to heating unit, even the meeting blocking pipeline make inflation no longer normal.
Summary of the invention
The carbon black problem that the present invention mainly solves in cementation process to be produced, and make and can realize directly that in cementation process gas is quenched and oil quenching two * select.It mainly relies on the method for intermediate frequency power supply in adding, in establish groom's jar, workpiece places in groom's tank body, because the carbon black that the obstruct of Muffle pot is produced in cementation process just can not pollute heating chamber and heating unit, uses the intermediate frequency power supply heating, rate of heating is fast.So the life-span of on the one hand improving equipment has also been improved effect on the other hand, but, provide bigger market because not only annoying quenching but also oil quenching of this equipment enlarges manufacture field.
Embodiment
This equipment heating chamber be vertical two cell structures mainly by the water cooled furnace wall shell, heating in medium frequency power supply groom jar inner bag.Middle insulated door slide valve.Pumped vacuum systems etc., cooling room are mainly by interchanger, transformation blower fan flow deflector, compositions such as oil groove and furnace cover lifting system.Specific implementation method, workpiece is packed into and is closed fire door in the Muffle pot and vacuumize, vacuum degree control is at-0.08-+0.02Mpa, be warming up to 950 ℃ of carburizing temperatures then, oozing temperature as hydrocarbon its is 860 ℃, and its infiltration layer can come the requirement of the cementation zone of dominant discharge and true workpiece of time by under meter.Opening the charging fire door when carburizing knot element directly drops to quenching chamber with workpiece and cools off and saved the energy so greatly.
Claims (3)
1, the method with induction heating is carried out vacuum carburization in vacuum oven.
2, cementation process adopts the method for Muffle pot, prevents to produce in the cementation process carbon black.
3, adopt vertical two cell structures, top is heating carburizing chamber, and the bottom is the oil-quenching air-cooling chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102424385A CN101503786A (en) | 2008-12-26 | 2008-12-26 | Vertical external heating induction heating vacuum carburizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102424385A CN101503786A (en) | 2008-12-26 | 2008-12-26 | Vertical external heating induction heating vacuum carburizing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101503786A true CN101503786A (en) | 2009-08-12 |
Family
ID=40976161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102424385A Withdrawn CN101503786A (en) | 2008-12-26 | 2008-12-26 | Vertical external heating induction heating vacuum carburizing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101503786A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560033A (en) * | 2010-12-23 | 2012-07-11 | 江苏丰东热技术股份有限公司 | Oil fume recovering device of vacuum oil quenching furnace |
| US10774413B2 (en) | 2015-11-11 | 2020-09-15 | Honeywell International Inc. | Low pressure induction carburization |
-
2008
- 2008-12-26 CN CNA2008102424385A patent/CN101503786A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560033A (en) * | 2010-12-23 | 2012-07-11 | 江苏丰东热技术股份有限公司 | Oil fume recovering device of vacuum oil quenching furnace |
| US10774413B2 (en) | 2015-11-11 | 2020-09-15 | Honeywell International Inc. | Low pressure induction carburization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C04 | Withdrawal of patent application after publication (patent law 2001) | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |