CN205473901U - Controllable at uniform velocity heat sink of heat treatment cooling process - Google Patents
Controllable at uniform velocity heat sink of heat treatment cooling process Download PDFInfo
- Publication number
- CN205473901U CN205473901U CN201620231386.1U CN201620231386U CN205473901U CN 205473901 U CN205473901 U CN 205473901U CN 201620231386 U CN201620231386 U CN 201620231386U CN 205473901 U CN205473901 U CN 205473901U
- Authority
- CN
- China
- Prior art keywords
- cooling
- air
- furnace
- heating furnace
- air duct
- 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.)
- Active
Links
Abstract
But controllable at uniform velocity heat sink of heat treatment cooling process cooling speed quantization control when being brand -new rational in infrastructure a, cooling, furnace temperature uniformity is good, product quality is high and stable high controllable at the uniform velocity heat sink, relates to machining's equipment for heat treatment and thermal treatment technology, its device is including burner gas cooling closed circulation system and exhaust emission system, burner gas cooling closed circulation system includes the heating furnace, with the return air duct and the supply air duct of heating furnace inner space intercommunication, mix cold wind device and air cycle drive arrangement, the exhaust emission system include with the chimney of mixing the cold air duct intercommunication, locate the high temperature valve door no. 2 on the chimney and locate the oven with the detect furnace internal gas pressure and with little differential pressure transmitter of high temperature valve door binary row data interchange.
Description
Technical field
This utility model relates to Equipment for Heating Processing and the Technology for Heating Processing of machining, it is applicable to different heat treatment heating furnaces, such as various heating furnaces such as bogie furnace, batch-type furnace, shaft furnace, bell furnaces, it is specially a kind of metal heat treatmet cooling procedure Controllable uniform heat sink.
Background technology
Controllable uniform cooling is～ensures the important step of metal thermal treatment quality, when requiring that the workpiece of different steel grade cools such as the annealing process of conventional alloy tool steel workpiece, at the uniform velocity must lower the temperature with the rate of cooling of 10～50 DEG C/h in about 800 DEG C～about 550 DEG C interval.And for example stress relief annealing after pressure vessel and welding machine frame, workpiece must at the uniform velocity be lowered the temperature with the rate of cooling of 20～60 DEG C/h in about 700 DEG C～about 350 DEG C interval, for similar above-mentioned technique, be there is no at present and realize the ripe scheme that Controllable uniform is lowered the temperature.
For meeting the requirement to rate of cooling of the metal heat treatmet cooling procedure, following three kind modes are usually taken:
One, after annealing heating completes, fire door cooling is opened, by changing the cooling rate of door opened size adjustment annealing.
Two, the air inlet of several band regulation valve is respectively opened in both sides, heating furnace bottom, furnace roof axis is opened some ventholes, annealing heating opens air inlet and venthole after terminating immediately, is regulated the rate of cooling of intake regulation annealing by the opening degree of regulation air inlet.
Three, in Chinese patent 2015100001065.2 " fast cooling device of a kind of heat-treatment furnace ", furnace high-temperature furnace gas is introduced in the outer fast cooling device of stove, make high-temperature furnace gas enter back into heating furnace after lowering the temperature by the method mixing cold wind and make its fast cooling.
Although above-mentioned three kinds of measures can improve the cooling capacity of equipment to a certain extent, but still there is following wretched insufficiency:
Obtained by above-mentioned first two method is the process curve expressed from temperature control instrument, the local temperature of the only temperature control point of reflection rather than the actual state of full burner hearth.For first method, being cold air upstream end at stove gate, after stove gate temperature and burner hearth, the temperature difference at wall is the biggest.In above-mentioned second method, lower furnace portion is cold air upstream end, and lower furnace portion temperature is the biggest with the temperature difference of upper furnace.Adverse consequences obtained by both approaches is: 1. big in the burner hearth temperature difference makes the temperature of zones of different workpiece in stove and rate of cooling larger difference occur, thus in causing same heat zones of different, heat treatment of workpieces quality is uneven.2. the amount being passed through cold air in stove cannot be controlled by above two method, i.e. workpiece rate of cooling is uncontrollable, causes different heat workpiece to make thermal treatment quality fluctuating margin bigger because of batch difference.
Result obtained by the third method above-mentioned, although improve the temperature into stove air by the method mixing cold wind, reduce cold air and directly enter the impact that stove brings to furnace temperature, solve cold wind and be directly entered burner hearth, destroy in-furnace temperature uniformity, cause the defect that thermal treatment quality is uneven, and shorten the production cycle.But this mode can only carry out qualitative management to rate of cooling, thus rate of cooling can not be carried out quantified controlling.That is, this method can meet the heat treatment of the less demanding product of thermal treatment quality, but the requirement to rate of cooling needs quantified controlling of the workpiece of different materials can not be met, can not meet that workpiece is identical but requirement to rate of cooling needs quantified controlling when batch difference.I.e. cannot ensure the thermal treatment quality of workpiece.
Utility model content
This utility model is for solving problem present in above-mentioned technology, it is proposed that during a kind of brand-new rational in infrastructure, cooling, cooling rate can quantified controlling, temperature uniformity is good, product quality is high and stability is high Controllable uniform heat sink.
A kind of metal heat treatmet cooling procedure Controllable uniform heat sink described in the utility model includes furnace gas cooling closed circuit circulatory system and intelligence exhaust emission system；
Furnace gas cooling closed circuit circulatory system includes heating furnace, the return air duct connected with inside heating furnace space and air supply duct, mix cooling air unit and air circulating driving device, described air circulating driving device is located between air supply duct and return air duct and is interconnected, described cooling air unit of mixing is located on return air duct, the described return air duct mixed between cooling air unit and air circulating driving device is provided with attemperating unit one, in order to detect the air themperature after mixing cold wind, to control to mix cooling air unit incorporation cold blast rate, the described return air duct mixed between cooling air unit and heating furnace is provided with high temperature valve one, described air circulating driving device includes Wind Volume circulating fan, described heating furnace furnace wall is provided with attemperating unit two, in order to detect the air themperature in stove, to control the hot blast rate in air circulating driving device feeding stove；
Intelligence exhaust emission system includes the chimney connected with return air duct, the high temperature valve two be located on chimney and in being located at stove to detect stove internal gas pressure, and carry out the differential pressure transmitter of data exchange with high temperature valve two.
Preferred as such scheme, described return air duct connects with inside heating furnace space from the bottom of heating furnace sidewall, and air supply duct connects with inside heating furnace space from heating furnace roof.
Preferred as such scheme, described in be located at roof and be provided with circulating fan.
Preferred as such scheme, described cooling air unit of mixing includes that is located on return air duct mixes cold wind blower fan, the described return air duct section outer wall mixing cold wind blower fan place is provided with the Outer Tube of one section of closed at both ends, formed between described Outer Tube and return air duct and mix cold wind district, return air duct section in described Outer Tube is provided with multiple through hole, described in mix cold wind blower fan and mix cold wind district and connect.
Preferred as such scheme, described chimney is located on the return air duct between high temperature valve one and furnace wall.
Preferred as such scheme, described in mix cold wind blower fan and Wind Volume circulating fan is respectively connected with frequency conversion motor.
The beneficial effects of the utility model are:
1, above-mentioned heat sink can carry out quantification control to the rate of cooling of furnace gas, thus realizes the control to workpiece rate of cooling, it is achieved intelligence Controllable uniform cooling.
2, by mixing cold wind by return stove after high-temperature furnace gas cooling, air at room temperature can be effectively reduced be directly entered heating furnace and cause greater impact to furnace temperature, utilize circulating fan to force furnace atmosphere circulation convection current to ensure furnace temperature is uniform simultaneously, the tendency of new thermal stress is produced, the thermal treatment quality of stress relief annealing after raising pressure vessel and welding machine frame when reducing cooling.
3 above-mentioned heat sinks are to use first to mix the mode of air-supply after cold wind is lowered the temperature, compared to the cooling method mixing cold wind again of first blowing, the heat resistance of its Wind Volume circulating fan requires relatively low, investment reduces, fault rate reduces, and Wind Volume circulating fan exhaust air rate when low-temperature range runs reduces, required power reduces, and advantageously reduces energy consumption.
4, intelligence exhaust emission system, it is possible to effectively prevent burner hearth in heating process from sucking cold air from the external world and destroy temperature uniformity, and advantageously reduce energy consumption.
5 said apparatus simple in construction, easy to maintenance, rate of cooling is controlled, and temperature uniformity is good, and thermal treatment quality is excellent and stability is high, applied widely, beneficially marketing.
Accompanying drawing explanation
Fig. 1 is the front view of metal heat treatmet cooling procedure Controllable uniform heat sink described in the utility model.
Fig. 2 is the top view of Fig. 1.
Fig. 3 is the structural representation in this utility model Zhong Can cold wind district.
Detailed description of the invention
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
As it is shown in figure 1, the structure of metal heat treatmet cooling procedure Controllable uniform heat sink described in the present embodiment is as follows:
Including furnace gas cooling closed circuit circulatory system and intelligence exhaust emission system；
Furnace gas cooling closed circuit circulatory system includes return air duct 4 and air supply duct 10 that heating furnace 1 connects with inside heating furnace space, mixes cooling air unit 6 and air circulating driving device, described air circulating driving device is located between air supply duct 10 and return air duct 4 and is interconnected, and mix cooling air unit 6 between air circulating driving device and return air duct 4
nullFurnace gas cooling closed circuit circulatory system includes heating furnace 1、The return air duct 4 connected with inside heating furnace space and air supply duct 10、Mix cooling air unit 6 and air circulating driving device，Described air circulating driving device is located between air supply duct 10 and return air duct 4 and is interconnected，Described cooling air unit 6 of mixing is located on return air duct 4，The described return air duct 4 mixed between cooling air unit 6 and air circulating driving device is provided with attemperating unit 1，In order to detect the air themperature after mixing cold wind，Mix cooling air unit 6 with control and mix cold blast rate，The described return air duct 4 mixed between cooling air unit 6 and heating furnace 1 is provided with high temperature valve 1，Described air circulating driving device includes Wind Volume circulating fan 8，Described heating furnace furnace wall is provided with attemperating unit 23，In order to detect the air themperature in stove，To control the hot blast rate in air circulating driving device feeding stove；
Intelligence exhaust emission system includes the chimney 12 connect with return air duct, the high temperature valve 2 11 be located on chimney 12 and in being located at stove to detect stove internal gas pressure and to carry out the differential pressure transmitter 13 of data exchange with high temperature valve 2 11.
In the present embodiment, described return air duct 4 connects with heating furnace 1 inner space from the bottom of heating furnace 1 sidewall, and air supply duct 10 connects with heating furnace 1 inner space from heating furnace 1 roof.Described heating furnace 1 inner roof wall is additionally provided with circulating fan 2.
In the present embodiment, described cooling air unit 6 of mixing includes that is located on return air duct 4 mixes cold wind blower fan 14, the described return air duct section outer wall mixing cold wind blower fan 14 place is provided with the Outer Tube 16 of one section of closed at both ends, formed between described Outer Tube 16 and return air duct and mix cold wind district 15, return air duct section in described Outer Tube 16 is provided with multiple through hole 17, described in mix cold wind blower fan 14 and mix cold wind district 15 and connect.
In the present embodiment, described chimney 12 is located on the return air duct between high temperature valve 1 and furnace wall.Described mix cold wind blower fan 14 and Wind Volume circulating fan 8 is respectively connected with frequency conversion motor 9.
The step of metal heat treatmet cooling procedure Controllable uniform cool-down method described in the present embodiment is described in detail below in conjunction with said structure:
(1), during heating furnace heating, high temperature valve one and high temperature valve two are closed.The a certain amount of high-temperature furnace gas that Wind Volume circulating fan is extracted out mixes with cold wind by after return air duct in mixing cooling air unit, obtaining the hot-air of design temperature, attemperating unit one monitors the temperature of hot-air in real time and control is mixed the cold blast rate of mixing of cold wind blower fan and reached setting value to hot air temperature；
(2) Wind Volume circulating fan is utilized to return in heating furnace by mixed hot-air, mix with furnace high-temperature air, reducing the temperature in heating furnace continuously by the setting value of technique cooling down curve, now attemperating unit two is monitored furnace air temperature in real time and controls the hot blast rate that Wind Volume circulating fan sends in stove and make furnace air temperature reach setting value；
(3) stove internal gas pressure is monitored by differential pressure transmitter in real time, and control the open degree of high temperature valve two, it is pressure-fired by the furnace pressure in smoke stack emission waste gas regulation heating furnace, prevents that negative pressure is directed in cold air enters stove and furnace temperature is produced impact, affect cooling effect.
In above-mentioned steps, utilize circulating fan to be sufficiently mixed with furnace air at the top of furnace inner space by hot-air simultaneously, and force the uniform furnace temperature of the convector in heating furnace.
Below according to above-mentioned at the uniform velocity cool-down method and at the uniform velocity heat sink, the present embodiment is described further.
Metal heat treatmet cooling procedure Controllable uniform cool-down method described in the utility model and device have the following characteristics that
1, detect corresponding air themperature by attemperating unit one and attemperating unit two and control mix cold wind amount, mix cold wind after the temperature of mixed gas and enter the air quantity of stove mixed gas, it is thus possible to the cooling rate of workpiece in fixing quantity stove, meet various workpiece in the specific requirement to rate of cooling of the different heat treatment technical cooling section.
2, the hot-air of uniform temperature is obtained by mixing cold wind cooling to the high-temperature furnace gas extracted out, return it into again in heating furnace, the euthermic hot-air of acquisition is mixed with furnace high-temperature furnace gas, promoted that by the circulating fan in heating furnace the hot-air returning heating furnace is sufficiently mixed and forces furnace atmosphere circulation convection current with furnace high-temperature furnace gas, make furnace temperature uniform, workpiece in stove is lowered the temperature.Mix the gas after high-temperature furnace gas is lowered the temperature by cold wind and return again to heating furnace, be to be directly entered heating furnace and impact to furnace temperature to reduce air at room temperature.There is after cooling gas and the mixed gas temperature of high-temperature furnace gas of uniform temperature, higher than the hot air temperature returning heating furnace, reduce the temperature difference of itself and workpiece；Meanwhile, the circulating fan in heating furnace forces furnace gas convection current uniformly temperature stove, produces the tendency of new thermal stress when reducing workpiece cooling.Pressure vessel stress relief annealing, welding stand stress relief annealing, high-alloy casting casting after annealing etc. are even more important by this point.
3, compared to the mode mixing cold wind cooling first with the air-supply of Wind Volume circulating fan again, this utility model uses the mode first mixing cold wind to high temperature air cooling recycling Wind Volume circulating fan air-supply, the resistance to temperature requirement of its required Wind Volume circulating fan is lower, Wind Volume circulating fan exhaust air rate when low-temperature range runs reduces, required power reduces, and advantageously reduces energy consumption and production cost.
In the above-described embodiments, in described furnace gas cooling closed circuit circulatory system, high temperature Wind Volume circulating fan is configured with matched frequency conversion motor, the technological temperature that the attemperating unit two configured by heating furnace is preset, the air output of regulation high temperature Wind Volume circulating fan, thus the speed that in controlling burner hearth, workpiece cools.
In the above-described embodiments, in described furnace gas cooling closed circuit circulatory system, mixing cold wind blower fan and be configured with matched frequency conversion motor, pass through the technological temperature that configured attemperating unit one is preset, the air quantity of cold wind blower fan is mixed in regulation.
In the above-described embodiments, described intelligence exhaust emission system is provided with high temperature valve two, and it is configured with matched servomotor and the differential pressure transmitter being located in heating furnace, co-controlling stove internal gas pressure, making furnace pressure be maintained at pressure-fired level, (30～50Pa) are, when to avoid furnace pressure be negative, to affect temperature uniformity because of heating furnace poorly sealed suction cold air, thus ensure thermal treatment quality, reduce energy consumption.
Under the heated condition of heat treatment, high temperature valve one and high temperature valve two are closed, and mix cold wind blower fan and high temperature Wind Volume circulating fan, differential pressure transmitter are in holding state.When entering cooling stage, opening high temperature valve one, high temperature valve two, differential pressure transmitter switches on power entrance duty, and attemperating unit one monitors the hot air temperature value after mixing cold wind in real time, and control and mix the frequency conversion motor rotating speed that cold wind blower fan is connected, regulation mixes cold blast rate.The temperature lowering curve that attemperating unit two on heating furnace sets, controls to drive the frequency conversion motor rotating speed of high temperature Wind Volume circulating fan, regulation to enter the hot blast rate of heating furnace, to control the rate of cooling of workpiece in heating furnace.
Differential pressure transmitter on heating furnace monitors stove internal gas pressure in real time, controls to drive the open degree of the servomotor control valve of high temperature valve two, and the discharge capacity of regulation waste gas, with regulating stove internal gas pressure.
Claims (6)
1. a metal heat treatmet cooling procedure Controllable uniform heat sink, it is characterised in that: include furnace gas lower the temperature closed cycle system
System and intelligence exhaust emission system；
Furnace gas cooling closed circuit circulatory system includes return air duct and air supply duct that heating furnace connects with inside heating furnace space, mixes
Cooling air unit and air circulating driving device, described air circulating driving device is located between air supply duct and return air duct and mutual
Connection, described in mix cooling air unit and be located on return air duct, described in mix the backwind tube between cooling air unit and air circulating driving device
Road is provided with attemperating unit one, in order to detect the air themperature after mixing cold wind, to control to mix cooling air unit incorporation cold blast rate, institute
Stating the return air duct mixing between cooling air unit and heating furnace and be provided with high temperature valve one, described air circulating driving device includes strong wind
Amount circulating fan, described heating furnace furnace wall is provided with attemperating unit two, in order to detect the air themperature in stove, follows controlling air
Ring driving means sends into the hot blast rate in stove；
Intelligence exhaust emission system includes the chimney connected with return air duct, the high temperature valve two be located on chimney and in being located at stove with
Detection stove internal gas pressure, and carry out the differential pressure transmitter of data exchange with high temperature valve two.
Metal heat treatmet cooling procedure Controllable uniform heat sink the most according to claim 1, it is characterised in that: described time
Wind pipeline connects with inside heating furnace space from the bottom of heating furnace sidewall, and air supply duct is empty with inside heating furnace from heating furnace roof
Between connect.
Metal heat treatmet cooling procedure Controllable uniform heat sink the most according to claim 1, it is characterised in that add described in:
Hot stove inner roof wall is provided with circulating fan.
Metal heat treatmet cooling procedure Controllable uniform heat sink the most according to claim 1, it is characterised in that mix described in:
Cooling air unit includes that is located on return air duct mixes cold wind blower fan, described in mix the return air duct section outer wall at cold wind blower fan place and be provided with
The Outer Tube of one section of closed at both ends, is formed between described Outer Tube and return air duct and mixes cold wind district, the backwind tube in described Outer Tube
Road section is provided with multiple through hole, described in mix cold wind blower fan and mix cold wind district and connect.
Metal heat treatmet cooling procedure Controllable uniform heat sink the most according to claim 1, it is characterised in that: described cigarette
Chimney is located on the return air duct between high temperature valve one and furnace wall.
Metal heat treatmet cooling procedure Controllable uniform heat sink the most according to claim 1, it is characterised in that mix described in:
Cold wind blower fan and Wind Volume circulating fan are respectively connected with frequency conversion motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620231386.1U CN205473901U (en) | 2016-03-24 | 2016-03-24 | Controllable at uniform velocity heat sink of heat treatment cooling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620231386.1U CN205473901U (en) | 2016-03-24 | 2016-03-24 | Controllable at uniform velocity heat sink of heat treatment cooling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205473901U true CN205473901U (en) | 2016-08-17 |
Family
ID=56652550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620231386.1U Active CN205473901U (en) | 2016-03-24 | 2016-03-24 | Controllable at uniform velocity heat sink of heat treatment cooling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205473901U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825924A (en) * | 2017-03-13 | 2017-06-13 | 成都育芽科技有限公司 | A kind of laser welding system constant temperature intelligent control method |
| CN106959015A (en) * | 2017-05-23 | 2017-07-18 | 核工业理化工程研究院 | Heat sink after heat treatment |
| CN108411098A (en) * | 2018-04-27 | 2018-08-17 | 安徽电缆股份有限公司 | A kind of alloy aluminum steel continuous annealer |
| CN109737739A (en) * | 2019-01-07 | 2019-05-10 | 东北大学 | A kind of cooling rate controllable type annealing device and method |
| CN110145932A (en) * | 2019-05-27 | 2019-08-20 | 河南天利热工装备股份有限公司 | A kind of efficient plugging device |
| CN111254270A (en) * | 2020-03-11 | 2020-06-09 | 北京星英联微波科技有限责任公司 | Material heat treatment device for antenna production |
| CN113741322A (en) * | 2021-08-09 | 2021-12-03 | 昆山万盛电子有限公司 | Intelligent control system for electronic product curing furnace |
-
2016
- 2016-03-24 CN CN201620231386.1U patent/CN205473901U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825924A (en) * | 2017-03-13 | 2017-06-13 | 成都育芽科技有限公司 | A kind of laser welding system constant temperature intelligent control method |
| CN106825924B (en) * | 2017-03-13 | 2018-07-17 | 佛山市德沣建材有限公司 | A kind of laser welding system constant temperature intelligent control method |
| CN106959015A (en) * | 2017-05-23 | 2017-07-18 | 核工业理化工程研究院 | Heat sink after heat treatment |
| CN108411098A (en) * | 2018-04-27 | 2018-08-17 | 安徽电缆股份有限公司 | A kind of alloy aluminum steel continuous annealer |
| CN109737739A (en) * | 2019-01-07 | 2019-05-10 | 东北大学 | A kind of cooling rate controllable type annealing device and method |
| CN110145932A (en) * | 2019-05-27 | 2019-08-20 | 河南天利热工装备股份有限公司 | A kind of efficient plugging device |
| CN111254270A (en) * | 2020-03-11 | 2020-06-09 | 北京星英联微波科技有限责任公司 | Material heat treatment device for antenna production |
| CN111254270B (en) * | 2020-03-11 | 2021-07-23 | 北京星英联微波科技有限责任公司 | Material heat treatment device for antenna production |
| CN113741322A (en) * | 2021-08-09 | 2021-12-03 | 昆山万盛电子有限公司 | Intelligent control system for electronic product curing furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205473901U (en) | Controllable at uniform velocity heat sink of heat treatment cooling process | |
| CN100457349C (en) | Air protecting and heating type braze welding furnace | |
| CN204325430U (en) | The low pressure air cooling vacuum annealing oven that a kind of speed of cooling is controlled | |
| CN104167261A (en) | Varnished wire producing oven and temperature control method | |
| CN109554520A (en) | A kind of mesh-belt type hot air circulation annealing stove | |
| CN203923307U (en) | vertical annealing furnace | |
| CN206056265U (en) | Engineering plastics coating sintering furnace | |
| CN102534177B (en) | Continuous annealing unit and circulating temperature control device for aging section of continuous annealing unit | |
| CN205741128U (en) | A kind of vertical continuous way tempering furnace | |
| CN208366050U (en) | A kind of pressure tank furnace | |
| CN105198196A (en) | Quick automatic cooling unit for annealing furnaces | |
| CN206131680U (en) | Automobile coating workshop is with energy -saving environmental protection dry -off oven | |
| CN216303940U (en) | Annealing furnace | |
| CN212362833U (en) | Aluminum bar homogenizing furnace | |
| CN105767061B (en) | Multistage tunnel type food processing roasting plant and method | |
| CN104480276B (en) | A kind of vertical continous way tempering furnace | |
| CN203999686U (en) | A kind of isothermal normalizing furnace of energy optimization | |
| CN108328915B (en) | Transverse circulating toughened glass homogenizing furnace | |
| CN100497664C (en) | Pushing type heating furnace with cooling apparatus | |
| CN205088114U (en) | Quick automatic heat sink of annealing stove | |
| CN203373393U (en) | Rapid cooling device for thermal treatment | |
| CN206702147U (en) | A kind of high temperature forging stove | |
| CN206298625U (en) | A kind of forced heat radiation energy saver in the production for titanium sponge reduction | |
| CN201473446U (en) | Toughened glass homogenizing furnace | |
| CN206416389U (en) | A kind of efficient tubing composite furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |