CN201289290Y - Rapid cooling type intermediate frequency induction sintering furnace - Google Patents
Rapid cooling type intermediate frequency induction sintering furnace Download PDFInfo
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- CN201289290Y CN201289290Y CNU2008201225939U CN200820122593U CN201289290Y CN 201289290 Y CN201289290 Y CN 201289290Y CN U2008201225939 U CNU2008201225939 U CN U2008201225939U CN 200820122593 U CN200820122593 U CN 200820122593U CN 201289290 Y CN201289290 Y CN 201289290Y
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Abstract
The utility model relates to a quick cooling type medium-frequency induction sintering furnace, in particular to an improved medium-frequency induction sintering furnace used for smelting and heating in the metal industry. The medium-frequency induction sintering furnace comprises a sintering furnace casing, a furnace inner support positioned at the lower part in the cavity body of the furnace casing, a copper induction coil positioned on the furnace inner support, an insulating brick casing layer positioned on the furnace inner support and outside the copper induction coil, a protective gas inlet device positioned on the side wall of the sintering furnace casing and a furnace body support positioned at the lower bottom of the sintering furnace casing; and the medium-frequency induction sintering furnace is characterized in that the furnace further comprises a furnace body cooling gas inlet pipe, a cooled gas outlet pipe, a heat radiator, a gas-cooling circulating fan, a cooling breather hole below the insulating brick casing layer and an upper air outlet hole below the insulating brick casing layer. A set of circulating cooling systems is additionally arranged on the basis of the traditional vertical medium-frequency induction sintering furnace, and when the furnace temperature of the medium-frequency induction sintering furnace is reduced to 800 DEG C below, the additionally arranged cooling systems are opened to realize the quick cooling of the low-temperature and temperature-reducing stage, therefore, the cooling time is reduced, and the economic benefit is increased.
Description
Technical field
A kind of fast cooling type Medium frequency induction sintering furnace relates to a kind of melting of metal industry, the improvement that the Medium frequency induction sintering furnace is used in heating.
Background technology
Medium frequency induction sintering furnace (hereinafter to be referred as intermediate frequency furnace) is a kind of supply unit that power frequency 50Hz alternating current is changed into intermediate frequency (300Hz is above to 10000Hz), mix induction coil and compensation condenser, use the firing equipment of electromagnetic induction principle, be widely used in melting, the heating of metal industry.Intermediate frequency furnace belongs to the periodic operating electric furnace, is made up of systems such as electric furnace main body, cooling system, protection gas system, intermediate frequency power supply and electrical controls.Furnace temperature can satisfy the sintering of various materials fully up to 2400 ℃.Intermediate frequency furnace is a kind of intermittent type gas protecting stove; work atmosphere can be vacuum, hydrogen, nitrogen, inert gas etc. in the stove; advantages such as the intermediate frequency furnace heater has that volume is little, in light weight, efficient is high, hot-working Functionality, quality and appealing design and favorable environment are widely used in the high temperature sintering of tungsten goods in the tungsten industry.Traditional intermediate frequency furnace cools off indirectly by the cooling water in the copper induction coil, and is separated with heat-insulation layer, and crucible is the insulation construction of a sealing, and intermediate frequency furnace has only a passage at the loam cake center.Therefore, rely on the speed of radiation cooling too slow, finished general needs of a sintering period 14 hours.
The sintering of tungsten goods adopts the hydrogen shield atmosphere sintering at present, and sintering time and heating curve are decided according to concrete technology, and maximum temperature is 1850～2400 ℃, and sintering cools off with stove after finishing.Practice shows, in the intermediate frequency furnace sintering of molybdenum product, the intermediate frequency furnace of circulation pure water cooling system is cooled to 55 ℃ from 1900 ℃ of maximum temperatures in adopting, generally need 14 hours, cool time is long, and the effective rate of utilization of intermediate frequency furnace is too low, time waste more than 30% is at temperature-fall period, cause the production cycle of product long, and then influence output and production efficiency, seriously restricting the performance of intermediate frequency furnace production capacity.
Summary of the invention
The purpose of this utility model is exactly the deficiency that exists at above-mentioned prior art, a kind of production cycle that can effectively reduce cool time, increase operation rate, shorten product is provided, enhances productivity, and improves the fast cooling type Medium frequency induction sintering furnace of intermediate frequency furnace production capacity.
The purpose of this utility model realizes by the following technical solutions.
A kind of fast cooling type Medium frequency induction sintering furnace, comprise the sintering furnace housing, be positioned at furnace body shell cavity bottom the stove inner support, be positioned at copper induction coil on the stove inner support, be positioned on the stove inner support and insulating brick shell that the copper induction coil is outer, be positioned at protective gas access equipment on the sintering furnace housing sidewall, be positioned at the furnace body support of sintering furnace housing lower bottom part; It is characterized in that its structure also comprises:
Body of heater refrigerating gas access tube-this access tube runs through and is positioned at the sintering furnace housing bottom, and tail end passes the stove inner support level board of bottom in the furnace body shell cavity between two parties;
Cooling back gas escape pipe-this escape pipe is one to have the siphunculus of water collar, is positioned at sintering furnace housing middle part sidewall;
Radiator-this radiator is the shell and tube radiator, and its inlet end links with cooling back gas escape pipe;
Coolant circulator-this fan air inlet and radiator gas outlet link, and the gas outlet of blower fan and body of heater refrigerating gas access tube link;
Insulating brick shell down cooling passage-this passage is centrally placed on the refractory brick drain pan layer on the stove inner support;
The insulating brick shell is gone up venthole down--and this passage is centrally placed in the outer refractory brick drain pan layer top of copper induction coil in the stove.
A kind of fast cooling type Medium frequency induction sintering furnace of the present utility model, it is characterized in that between coolant circulator escape pipe and body of heater refrigerating gas access tube, being provided with by-pass valve control, be provided with drain tap on the coolant circulator escape pipe, body of heater refrigerating gas access tube is provided with the furnace gas drain tap.
A kind of fast cooling type Medium frequency induction sintering furnace of the present utility model, present situation at molybdenum product intermediate frequency furnace high temperature sintering, on the basis of original intermediate frequency furnace, under the prerequisite that does not influence product quality, increase by a cover circulating cooling system, adopt hydrogen or argon gas as cooling medium, realize cooling fast, shorten cool time, the time of temperature-fall period was controlled at 5～6 hours, reduce the production cycle of molybdenum product, bring into play the production capacity of intermediate frequency furnace to greatest extent, improve the utilization rate and the output of intermediate frequency furnace, enhance productivity, increase economic benefit.
The utility model is on the basis of traditional vertical Medium frequency induction sintering furnace, do not need to carry out big change, only need to increase a cover circulating cooling system, adopt hydrogen or argon gas as cooling medium, when the furnace temperature of intermediate frequency furnace is reduced to below 800 ℃, open the cooling system that increases, realize the quick cooling of low temperature temperature-fall period, shorten cool time, realize the fast and efficient production of intermediate frequency furnace, increase economic benefit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
A kind of fast cooling type Medium frequency induction sintering furnace, comprise sintering furnace housing 1, be positioned at furnace body shell cavity bottom stove inner support 2, be positioned at copper induction coil 3 on the stove inner support, be positioned on the stove inner support and insulating brick shell 4 that the copper induction coil is outer, be positioned at protective gas access equipment 5 on the sintering furnace housing sidewall, be positioned at the furnace body support 6 of sintering furnace housing lower bottom part; It is characterized in that its structure also comprises:
Body of heater refrigerating gas access tube 7-this access tube runs through and is positioned at the sintering furnace housing bottom, and tail end passes the stove inner support level board of bottom in the furnace body shell cavity between two parties;
Cooling back gas escape pipe 8-this escape pipe is one to have the siphunculus of water collar, is positioned at sintering furnace housing middle part sidewall;
Radiator 9-this radiator is the shell and tube radiator, and its inlet end links with cooling back gas escape pipe;
Coolant circulator 10-this fan air inlet and radiator gas outlet link, and the gas outlet of blower fan and body of heater refrigerating gas access tube link;
Insulating brick shell down cooling passage 11-this passage is centrally placed on the refractory brick drain pan layer on the stove inner support;
The insulating brick shell is gone up this passage of venthole 12--down and is centrally placed in the outer refractory brick drain pan layer top of copper induction coil in the stove.
A kind of fast cooling type Medium frequency induction sintering furnace of the present utility model, between coolant circulator escape pipe and body of heater refrigerating gas access tube, be provided with by-pass valve control 13, be provided with drain tap 14 on the coolant circulator escape pipe, body of heater refrigerating gas access tube is provided with furnace gas drain tap 15.
During operation, circulation pure water cooling system in starting is put into intermediate frequency furnace with goods, airtight back feeds hydrogen, light steam vent and begin heating after detonating experiment is qualified, carry out sintering according to the sintering process of formulating, automatic outage was lowered the temperature with stove after the intermediate frequency furnace soak finished; When approximately cooling to below 800 ℃ behind the 1.5h, the row's of closing hydrogen mouth is opened the water-cooled ball valve earlier, start fast cold circulating fan, slowly increase wind speed, cold air through water-cooled valve, conveyance conduit, enters material bottom through air channel, heat-insulation layer hole, bottom from blower fan, after passing material and material and fully carrying out heat exchange, through the dislocation hole air-out of heat-insulation layer top, and abrupt release pressure and heat, to reach steady operational status, hot gas passes through water cooled pipeline and two groups of cooling systems of radiator again, enters next circulation; Carry out this cyclic process repeatedly and drop to 55 ℃ up to furnace temperature, the time is controlled in the 4h, in the process of fast air-cooler work, makes by control system to keep pressure-fired in the stove, guarantees the safe operation of intermediate frequency furnace; When treating that furnace temperature drops to below 55 ℃, open bell and take out material, finish a sintering period.
Start intermediate frequency furnace normal running program, the 200kg molybdenum plate is put into intermediate frequency furnace, airtight back feeds hydrogen, after 40 minutes, qualified through detonating experiment, light steam vent and begin heating, carry out sintering according to the sintering process of formulating, intermediate frequency furnace high temperature (1930 ℃) insulation finishes afterwards outage automatically and lowers the temperature with stove; 1.5h after cool to 800 ℃, the cooling system that open to increase is forced cooling fast, furnace temperature drops to 55 ℃ behind the 3.5h, opens bell and takes out the molybdenum plate goods that sinter, and finishes a sintering period.
Start intermediate frequency furnace normal running program, the 180kg molybdenum bar is put into intermediate frequency furnace, airtight back feeds hydrogen, after 40 minutes, qualified through detonating experiment, light steam vent and begin heating, carry out sintering according to the sintering process of formulating, intermediate frequency furnace high temperature (1860 ℃) insulation finishes afterwards outage automatically and lowers the temperature with stove; 2.5h after cool to 500 ℃, the cooling system that open to increase is forced cooling fast, furnace temperature drops to 55 ℃ behind the 3h, opens bell and takes out the molybdenum bar goods that sinter, and finishes a sintering period.
Claims (2)
1. fast cooling type Medium frequency induction sintering furnace, comprise the sintering furnace housing, be positioned at furnace body shell cavity bottom the stove inner support, be positioned at copper induction coil on the stove inner support, be positioned on the stove inner support and insulating brick shell that the copper induction coil is outer, be positioned at protective gas access equipment on the sintering furnace housing sidewall, be positioned at the furnace body support of sintering furnace housing lower bottom part; It is characterized in that its structure also comprises:
Body of heater refrigerating gas access tube-this access tube runs through and is positioned at the sintering furnace housing bottom, and tail end passes the stove inner support level board of bottom in the furnace body shell cavity between two parties;
Cooling back gas escape pipe-this escape pipe is one to have the siphunculus of water collar, is positioned at sintering furnace housing middle part sidewall;
Radiator-this radiator is the shell and tube radiator, and its inlet end links with cooling back gas escape pipe;
Coolant circulator-this fan air inlet and radiator gas outlet link, and the gas outlet of blower fan and body of heater refrigerating gas access tube link;
Insulating brick shell down cooling passage-this passage is centrally placed on the refractory brick drain pan layer on the stove inner support;
The insulating brick shell is gone up venthole down--and this passage is centrally placed in the outer refractory brick drain pan layer top of copper induction coil in the stove.
2. according to requiring 1 described a kind of fast cooling type Medium frequency induction sintering furnace on the right, it is characterized in that between coolant circulator escape pipe and body of heater refrigerating gas access tube, being provided with by-pass valve control, be provided with drain tap on the coolant circulator escape pipe, body of heater refrigerating gas access tube is provided with the furnace gas drain tap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201225939U CN201289290Y (en) | 2008-09-24 | 2008-09-24 | Rapid cooling type intermediate frequency induction sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201225939U CN201289290Y (en) | 2008-09-24 | 2008-09-24 | Rapid cooling type intermediate frequency induction sintering furnace |
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| CN201289290Y true CN201289290Y (en) | 2009-08-12 |
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| CNU2008201225939U Expired - Lifetime CN201289290Y (en) | 2008-09-24 | 2008-09-24 | Rapid cooling type intermediate frequency induction sintering furnace |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445075A (en) * | 2011-12-15 | 2012-05-09 | 邹建明 | Heating recycling method and device of medium frequency induction roaster |
| CN103256809A (en) * | 2013-06-08 | 2013-08-21 | 常熟市双月机械有限公司 | Slow cooling device of push rod sintering furnace used for powder metallurgy |
| CN103358430A (en) * | 2013-07-17 | 2013-10-23 | 佳施加德士(苏州)塑料有限公司 | Finished material circulating pipeline device |
| CN107941019A (en) * | 2017-12-21 | 2018-04-20 | 宁夏昇力恒真空设备有限公司 | High-temperature atmosphere multiple stage circulation cooled super high sintering temperature stove |
| CN107941006A (en) * | 2017-12-21 | 2018-04-20 | 宁夏昇力恒真空设备有限公司 | Improvement type high-temperature atmosphere multiple stage circulation cools down super high sintering temperature stove |
| CN108806909A (en) * | 2017-05-03 | 2018-11-13 | 绵阳信和磁性材料有限公司 | A kind of high security processing technology of samarium cobalt magnet |
| CN110285681A (en) * | 2019-05-23 | 2019-09-27 | 中国核电工程有限公司 | Multifunctional gas furnace cooling system |
| CN112811916A (en) * | 2020-12-28 | 2021-05-18 | 哈尔滨工业大学（威海） | Hot isostatic pressing device for carbon-based composite material and preparation method of composite material |
-
2008
- 2008-09-24 CN CNU2008201225939U patent/CN201289290Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445075A (en) * | 2011-12-15 | 2012-05-09 | 邹建明 | Heating recycling method and device of medium frequency induction roaster |
| CN102445075B (en) * | 2011-12-15 | 2016-08-10 | 周俊和 | A kind of Medium frequency induction roaster heat energy recovering method and device |
| CN103256809A (en) * | 2013-06-08 | 2013-08-21 | 常熟市双月机械有限公司 | Slow cooling device of push rod sintering furnace used for powder metallurgy |
| CN103358430A (en) * | 2013-07-17 | 2013-10-23 | 佳施加德士(苏州)塑料有限公司 | Finished material circulating pipeline device |
| CN108806909A (en) * | 2017-05-03 | 2018-11-13 | 绵阳信和磁性材料有限公司 | A kind of high security processing technology of samarium cobalt magnet |
| CN107941019A (en) * | 2017-12-21 | 2018-04-20 | 宁夏昇力恒真空设备有限公司 | High-temperature atmosphere multiple stage circulation cooled super high sintering temperature stove |
| CN107941006A (en) * | 2017-12-21 | 2018-04-20 | 宁夏昇力恒真空设备有限公司 | Improvement type high-temperature atmosphere multiple stage circulation cools down super high sintering temperature stove |
| CN107941019B (en) * | 2017-12-21 | 2023-10-03 | 昇力恒(宁夏)真空科技股份公司 | High-temperature atmosphere multistage circulation cooling type ultrahigh-temperature sintering furnace |
| CN110285681A (en) * | 2019-05-23 | 2019-09-27 | 中国核电工程有限公司 | Multifunctional gas furnace cooling system |
| CN112811916A (en) * | 2020-12-28 | 2021-05-18 | 哈尔滨工业大学（威海） | Hot isostatic pressing device for carbon-based composite material and preparation method of composite material |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |
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| CX01 | Expiry of patent term |