CN86209673U - Heat-treatment furnace with non-oxidization heating box - Google Patents
Heat-treatment furnace with non-oxidization heating boxInfo
- Publication number
- CN86209673U CN86209673U CN 86209673 CN86209673U CN86209673U CN 86209673 U CN86209673 U CN 86209673U CN 86209673 CN86209673 CN 86209673 CN 86209673 U CN86209673 U CN 86209673U CN 86209673 U CN86209673 U CN 86209673U
- Authority
- CN
- China
- Prior art keywords
- furnace
- heat treatment
- treatment furnace
- heat
- heating
- 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 - Lifetime
Links
Landscapes
- Furnace Details (AREA)
Abstract
The utility model discloses a heat-treatment furnace with non-oxidization heating box in which the two side inner wall of the furnace mouth of common box electric furnaces is respectively provided with an exhaust pipe and a chimney, wherein, the inside of the exhaust pipe is provided with a methanol low temperature cracker; the methanol low temperature cracker is heated by part of waste gas exhausted by the furnace, and generates protective gas to enter in the furnace, which realizes non-oxidization heat; the action of the chimney is to exhaust the waste gas in the furnace and absorb the air from the door gap of the furnace, which effectively guarantees the stability in furnace and prevents furnace from deflagrating. The furnace is also provided with an explosion proof valve, and guarantees productive safety. The existing box type heat-treatment furnace can be refitted into an easy non-oxidization heating furnace.
Description
The utility model belongs to electric-heating heat treatment equipment, the box heat treatment furnace of a kind of novel nonoxidizing heating.
In metal heat treatmet technology, workpiece heats in non-oxidizing atmosphere, is the key that improves thermal treatment part quality.In existing device, adopt the heat treatment cycle operation stove of protective atmosphere nonoxidizing heating to mainly contain following a few class:
1, two chamber twin furnace door sealing formula heat treatment furnace, as the multipurpose furnace (how as cementing furnace) of Britain's Belleek ware and the RTM type stove of China, its structure is quite complicated, cost an arm and a leg (surplus every 20 ten thousand yuan), protection gas also needs prepare separately.
2, Ri Ben single chamber list fire door special atmosphere oven, its structure is simpler, but members such as fire door, firedoor frame need be used high temperature steel, the cost height.Workpiece takes on material the time need infeed shielding gas continuously, and flame constantly burns at fire door, causes detonation to stop air to be invaded in the stove.Therefore, air consumption is very big, and protective atmosphere needs preparation separately.
3, in " application on the RJX45-9 box-type furnace of nitrogen group protecting atmosphere and power-saving technology " literary composition that 86 years the 2nd periodicals of " electric furnace " magazine carry, the common box heat treatment furnace of a kind of instillation formula has been proposed.This stove, often because of organic liquor cracking of instiling is incomplete, the difficult control of atmosphere.Air admission burner hearth because of invading again from fire door, and difficultly realize nonoxidizing heating, can only accomplish few oxidation.
The purpose of this utility model is that development is a kind of simple in structure, operational safety, good energy-conserving effect, the box heat treatment furnace of the nonoxidizing heating that cost is low.
The protection gas generator and the stove of this type of furnace are integrated, the waste gas residual heat heated protective gas generator that utilizes stove to discharge.Simultaneously, adopt simple structure to prevent the air admission burner hearth of invading from fire door.And be provided with safety guard, produce detonation when avoiding taking on material.
The utility model is to improve design on the basis of common box heat treatment furnace.
Accompanying drawing is a structural representation of the present utility model.
Fig. 1 is a longitudinal sectional view of the present utility model.Fig. 2 is Figure 1A-A sectional view.
Common box heat treatment furnace is made up of furnace shell (1), furnace lining (2), burner hearth (3), fire door (4) and fire door (5) etc. The utility model is established respectively chimney (6) and blast pipe (7) in common cabinet-type electric furnace fire door both walls. Settle a low-temperature methanol cracker (8) in blast pipe, it is connected with pipeline, passes into burner hearth. The effect of chimney is to discharge the interior waste gas of stove and siphon away the air of invading from fire door, in order to avoid destroy the protective atmosphere in the burner hearth, has effectively prevented the oxidation of the interior heat treatment part of stove and prevent from taking place detonation in burner hearth.
Protection gas adopts the gaseous mixture of methyl alcohol cracked gas and industrial nitrogen, also can be pure methyl alcohol cracked gas. Can add again a small amount of liquefied petroleum gas to the high-carbon steel part that requires not have decarburization. The catalyst that the low-temperature methanol cracker adopts is the Cu-Zn-Al alloy. Methyl alcohol cracking temperature is 260 ℃～320 ℃. Industrial Nitrogen and liquefied petroleum gas are by bottled nitrogen and LPG supply. Methyl alcohol enters cracking still through instillator (9), and rear generation cracked gas is heated. Cracked gas through pipeline, flowmeter and control valve with form protection gas after industrial nitrogen and liquefied petroleum gas mix, pass into burner hearth from the stove rear portion, realize the workpiece scale-free heating.
The measure of low-temperature methanol cracker temperature control is as follows:
(1) outside low-temperature methanol cracking organ pipe, twines resistance wire, the usefulness of heating cracker when heating up as black furnace;
(2) installation position of vapor pipe in side wall that is equipped with cracker determines that condition is: when stove used continuously, under the situation of obstructed waste gas, this place's temperature of furnace wall was about 200 ℃, to guarantee the base temperature of cracker;
(3) under the stove normal operating conditions, the utilization of low-temperature methanol cracker is by the waste gas heating in the gas exhaust duct, and the temperature of waste gas infeeds tube valve (11) by the throttling valve (10) on the adjusting vapor pipe and the air that is arranged on the vapor pipe ingress and controls in the pipeline.When need improving temperature, increase the opening of throttling valve on the vapor pipe, the exhausted air quantity that passes through with increase; Otherwise, then reduce the opening of throttling valve.In addition, can also utilize the feeding of control freezing air to measure and regulate spent air temperture.Unnecessary waste gas is discharged by stopping valve (12) control through chimney.
In the safety valve (13) that is provided with suitable for reading of chimney, excessive or accidental when detonation takes place when furnace pressure, it backs down gaseous-pressure from being about to, and has played provide protection.Waste gas is in the combustion of vent pipe stomion, to eliminate environmental pollution.
Strengthen the stove sealing, furnace shell adopts integral solder, and the water glass paint smears weld seam, the furnace roof cover plate adopts the sand seal structure, is convenient to brickwork and maintenance, fire door adds packing and compresses sealing.
The sealed special atmosphere oven structure compared of the utility model and standard is simple, and energy consumption is low, and equipment manufacturing cost only is 1/15th～20 of a RM type stove.
Compare with easy instillation formula stove, realized the workpiece nonoxidizing heating reliably, atmosphere is controlled easily, and cost is low, and waste gas residual heat obtains utilizing, and save energy is easy to use and reliable.
Utilize this utility model can the box heat treatment furnace of existing widespread use be undergone technological transformation.
Claims (3)
1, electric-heating heat treatment equipment, the box heat treatment furnace of a kind of novel nonoxidizing heating, it is made up of furnace shell, furnace lining, burner hearth, fire door, fire door etc., it is characterized in that in the fire door both walls, being provided with respectively the vapor pipe [7] of chimney [6], one low-temperature methanol cracker [8] is set in vapor pipe, the gas that the low temperature cracker produces by pipeline with infeed burner hearth after industrial nitrogen and liquefied petroleum gas (LPG) mix.
2, the box heat treatment furnace of a kind of novel nonoxidizing heating according to claim 1 is characterized in that being provided with air at the vapor pipe inlet infeeds tube valve (11), establishes throttling valve (10) at the exhaust outlet place.
3, according to claim 1, the box heat treatment furnace of 2 described a kind of novel nonoxidizing heatings, it is characterized in that safety valve (13) being set at chimney breast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209673 CN86209673U (en) | 1986-11-28 | 1986-11-28 | Heat-treatment furnace with non-oxidization heating box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86209673 CN86209673U (en) | 1986-11-28 | 1986-11-28 | Heat-treatment furnace with non-oxidization heating box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86209673U true CN86209673U (en) | 1987-12-09 |
Family
ID=4811518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86209673 Expired - Lifetime CN86209673U (en) | 1986-11-28 | 1986-11-28 | Heat-treatment furnace with non-oxidization heating box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86209673U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290201A (en) * | 2012-02-24 | 2013-09-11 | 北京京杰锐思技术开发有限公司 | Anti-oxidation heater |
| CN103805759A (en) * | 2012-11-01 | 2014-05-21 | 财团法人金属工业研究发展中心 | Furnace gas generating device for small heat treatment furnace |
| CN104344725A (en) * | 2014-11-07 | 2015-02-11 | 苏州工业园区姑苏科技有限公司 | Furnace seal atmosphere purification device |
| CN104388650A (en) * | 2014-11-22 | 2015-03-04 | 唐山亚捷机械有限公司 | Gas inlet pipe-guiding device having atomization function |
-
1986
- 1986-11-28 CN CN 86209673 patent/CN86209673U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290201A (en) * | 2012-02-24 | 2013-09-11 | 北京京杰锐思技术开发有限公司 | Anti-oxidation heater |
| CN103290201B (en) * | 2012-02-24 | 2015-07-22 | 北京京杰锐思技术开发有限公司 | Anti-oxidation heater |
| CN103805759A (en) * | 2012-11-01 | 2014-05-21 | 财团法人金属工业研究发展中心 | Furnace gas generating device for small heat treatment furnace |
| CN103805759B (en) * | 2012-11-01 | 2016-01-20 | 财团法人金属工业研究发展中心 | Furnace gas generating device for small heat treatment furnace |
| CN104344725A (en) * | 2014-11-07 | 2015-02-11 | 苏州工业园区姑苏科技有限公司 | Furnace seal atmosphere purification device |
| CN104388650A (en) * | 2014-11-22 | 2015-03-04 | 唐山亚捷机械有限公司 | Gas inlet pipe-guiding device having atomization function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN86209673U (en) | Heat-treatment furnace with non-oxidization heating box | |
| CN111957939A (en) | Converter coal gas heat accumulation formula tundish roaster is fired to intelligence | |
| CN201152548Y (en) | Environment-protecting energy-saving heating stove | |
| CN2624057Y (en) | Small-sized inverse combustion coal gasification boiler | |
| CN103343964B (en) | Combustion method for greatly improving thermal efficiency of industrial furnace by alcohol-based clean fuel | |
| CN201016554Y (en) | Gas infrared radiation heating holding furnace | |
| CN2578691Y (en) | Gangue energy saving furnace with electronic ignition and hot air and steam aided combustion | |
| CN212285849U (en) | Converter coal gas heat accumulation formula tundish roaster is fired to intelligence | |
| CN211952741U (en) | Energy-saving and environment-friendly grain drying pulverized coal furnace | |
| CN2674304Y (en) | High-temp low-oxygen air and smoke mixer | |
| CN201359291Y (en) | Multifunctional environmental-friendly and energy-saving combustor | |
| CN2202248Y (en) | Double-hearth atmospheric hot-water boiler | |
| CN2121286U (en) | Metallurgical bale inverted burning-off device | |
| CN200979175Y (en) | Chimney-free environment-friendly energy-saving coal-firing gasification boiler | |
| CN2605520Y (en) | Vertical domestic heating stove capable of sufficient combustion | |
| CN206609286U (en) | Metallic gas smelting furnace | |
| Wieringa | Spectral effects of radiative heat-transfer in high-temperature furnaces burning natural gas | |
| CN2919024Y (en) | Coal gasification normal pressure hot water vapor bath special-purpose environment protective boiler | |
| CN2359574Y (en) | Device for radical curing black smoking rose from kiln, pot and boiler without stop burning and quick mounting | |
| CN2389287Y (en) | Gas heating furnace | |
| CN2484534Y (en) | Hot-gas heating furnace | |
| CN2692607Y (en) | Energy-saving smoke-less burning stove | |
| CN2304092Y (en) | Burning apparatus for hot-gas reverse-flame kiln | |
| CN2407286Y (en) | Energy-saving hot air stove | |
| CN2588300Y (en) | Power dispersing heat storage type sintering ignition furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |