CN1128887C - Liquid and steam protected antioxidant heat treatment method and equipment - Google Patents
Liquid and steam protected antioxidant heat treatment method and equipment Download PDFInfo
- Publication number
- CN1128887C CN1128887C CN 00106290 CN00106290A CN1128887C CN 1128887 C CN1128887 C CN 1128887C CN 00106290 CN00106290 CN 00106290 CN 00106290 A CN00106290 A CN 00106290A CN 1128887 C CN1128887 C CN 1128887C
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- heat treatment
- jar
- treatment tank
- liquid
- inner cap
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Abstract
The present invention provides an oxidation resistance heat treatment method which adopts liquid gasification steam as protection steam and an oxidation resistance heat treatment device which adopts the method. A maze type sealed heat treatment tank is filled with a protection solution of which the gasification steam specific gravity is larger than that of air. Air can be squeezed from the treatment tank by the protection solution evaporation, boiling and gasification through an inner cover and an outer cover. The purpose of isolating atmospheric oxygen and preventing oxidation heat treatment is achieved.
Description
The present invention relates to a kind ofly, and adopt a kind of anti-oxidation thermal treatment unit of this method with the antioxidant heat treatment method of fluent meterial carburation by evaporation vapour as the oxygen barrier protective substance.
At present, the anti-oxidation thermal treatment of in industrial production, carrying out, for example stainless steel work-piece is carried out anti-oxidation bright heat treatment etc., or in vacuum oven, carry out, or logical argon gas carries out oxygen barrier protection to workpiece, or with ammoniacal liquor through thermal decomposition furnace resolve into nitrogen, hydrogen hybrid protective gas carries out oxygen barrier to workpiece and protects.Vacuum oven costs an arm and a leg, complicated operation, maintenance difficulty; It is many that argon protects type consumption gas, and the cost height will be used gas cylinder, use the high temperature tracheae; The ammonia decomposition type needs ammonia destruction furnace, refining plant, operate cumbersome, use inconvenient, the cost height.
The objective of the invention is to provide a kind of simple in structure, easy to operate, be easy to grasp, the antioxidant heat treatment method that running cost is cheap, and a kind of anti-oxidation thermal treatment unit that adopts this method.
The object of the present invention is achieved like this, as accompanying drawing＜one〉shown in, it is a kind of anti-oxidation thermal treatment unit that adopts the protection of liquid object vaporization vapour, be called anti-oxidation thermal treatment bag again, it is made with high temperature steel or other heat-resisting gas impermeable materials, drum or side's bucket (1) that it is shut by a lower end are made the loading heat treatment tank, the inboard step-like wear ring (3) that a plane or the conical surface are arranged of jar, the jar mouth has labyrinth type sealing groove (4), and treatment tank has two-layer loam cake, and (2) are inner caps, the inner cap upside can be contained a small amount of protective liquid, (6) be enclosing cover, the enclosing cover lower side is along there being sealed groove (5), and the loam cake groove is combined into labyrinth seal structure with jar sealing groove of mouth.When carrying out anti-oxidation thermal treatment, pending workpiece is packed in the treatment tank, loading height is lower than inner side step wear ring height, inject an amount of protective liquid, as ethanol, volatile matters such as ethylene glycol, protective liquid is by being easy to evaporation under the low temperature, boiling, the material of vaporization is formed, the specific gravity of gas of vaporization vapour is greater than the proportion of air, inwall along treatment tank injects a jar end, cover inner cap then, also inject a small amount of protective liquid at the inner cap upside, (to less demanding anti-oxidation thermal treatment, can be without inner cap), cover enclosing cover afterwards again, then treatment tank is sent into heat treated in the general heat treatment furnace, along with temperature rises, the protective liquid that reaches the inner cap upside in jar evaporates rapidly, boiling, vaporization, because the proportion of protective liquid vaporization vapour is greater than air specific weight, vaporization vapour with air from jar upper end through inner cap, enclosing cover squeezes outside the treatment tank, because treatment tank mouth and enclosing cover are formed labyrinth seal structure, and be full of heavy vaporization vapour in the jar, in whole heat-treatment process, air and oxygen wherein are difficult to invade in the treatment tank once more, the minute quantity oxygen of invasion is owing to there is the isolation of inner cap, and in inner cap upside and vaporization vapour generation oxidizing reaction, can enter the oxygen that inner cap contacts with workpiece has been very little, realized the anti-oxidation thermal treatment of oxygen barrier, treatment tank in the stove arrives treatment temp and after the time, treatment tank is taken out from stove, rapidly treatment tank is inverted, enclosing cover, inner cap and processed workpiece are together poured in the handling oil, have realized anti-oxidation heat treated whole process.
Carry out anti-oxidation thermal treatment with the inventive method and employing apparatus of the present invention, avoided adopting expensive vacuum heat treatment furnace, there is not argon to protect the cumbersome property of operation of type and the anti-oxidation heat treatment furnace of ammonia decomposition type and expensive, present method and this device have been realized anti-oxidation heat treated easy, safe and cheap.
Claims (3)
1, a kind of with the antioxidant heat treatment method of liquid state vaporization vapour as protective media, its principal character is to inject the protective liquid that the vaporization vapour proportion low temperature more great than air ratio easily evaporates, seethes with excitement, vaporizes in the heat treatment tank of labyrinth type sealing, lean on the vaporization vapour of protective liquid that air is squeezed away from treatment tank, by the isolation of jar labyrinth type sealed structure of mouth and inner cap realization and atmospheric oxygen.
2, protective liquid according to claim 1, the major ingredient that it is characterized in that them are volatile matters such as ethanol, ethylene glycol.
3, the anti-oxidation thermal treatment unit of a kind of liquid and steam protected, its principal character is that drum or a side's bucket heat treatment tank of going to the bottom and shutting is arranged, there is the step-like wear ring of a plane or the conical surface inboard of jar, the jar mouth has the labyrinth type sealing groove, and treatment tank has two layers, and inner cap is on jar inboard step-like wear ring, the inner cap upside can be contained a small amount of protective liquid, inner cap can, the enclosing cover lower side is along there being a sealed groove, the loam cake groove with jar mouthful a sealing groove be combined into labyrinth seal structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106290 CN1128887C (en) | 2000-05-09 | 2000-05-09 | Liquid and steam protected antioxidant heat treatment method and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00106290 CN1128887C (en) | 2000-05-09 | 2000-05-09 | Liquid and steam protected antioxidant heat treatment method and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1322850A CN1322850A (en) | 2001-11-21 |
| CN1128887C true CN1128887C (en) | 2003-11-26 |
Family
ID=4578259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00106290 Expired - Fee Related CN1128887C (en) | 2000-05-09 | 2000-05-09 | Liquid and steam protected antioxidant heat treatment method and equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128887C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181616A (en) * | 2011-04-15 | 2011-09-14 | 长春轨道客车股份有限公司 | Device and method for preventing cavity member from being oxidized during stress relief annealing |
| CN102766839B (en) * | 2012-06-29 | 2018-06-15 | 上海市机械制造工艺研究所有限公司 | Steel part low-temperature solid boronising surface Hardening Treatment device and method |
| CN109392731A (en) * | 2017-08-16 | 2019-03-01 | 苏州市苏杭科技器材有限公司 | A kind of isolator attachment device |
| CN107856991A (en) * | 2017-12-22 | 2018-03-30 | 新乡市恒星科技有限责任公司 | A kind of high temperature-proof lubricating grease storage device |
-
2000
- 2000-05-09 CN CN 00106290 patent/CN1128887C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1322850A (en) | 2001-11-21 |
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| C06 | Publication | ||
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| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Xu Guohan Document name: Notice of application for patent for invention |
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| 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 |