CN2923728Y - Roller-bottom type U-shape after-heat utilized annealing furnace - Google Patents
Roller-bottom type U-shape after-heat utilized annealing furnace Download PDFInfo
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- CN2923728Y CN2923728Y CN 200620102803 CN200620102803U CN2923728Y CN 2923728 Y CN2923728 Y CN 2923728Y CN 200620102803 CN200620102803 CN 200620102803 CN 200620102803 U CN200620102803 U CN 200620102803U CN 2923728 Y CN2923728 Y CN 2923728Y
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Abstract
The utility model discloses a roller hearth U-shaped heat-utilization annealing furnace which comprises a feeding and discharging platform, a roller hearth furnace, a lifting mechanism, a transmission system and a vacuum air-exchanging chamber. The feeding and discharging platform, the vacuum air-exchanging chamber, the roller hearth furnace and the lifting mechanism are connected one after another. The roller hearth furnace is provided with a heat insulation layer. The feeding and discharging platform comprises a feeding frame and a discharging frame. One of the feeding frame and the discharging frame is provided on the upper layer, the other is provided on the lower layer. The heat insulation layer is arranged in the roller hearth furnace of the utility model. The heat insulation layer divides part of the roller hearth furnace into an isolated upper layer of furnace and an isolated lower layer of furnace. The two layers at the same time make heat treatment to the metal. The yield of the furnace is increased and the equipment length is shortened. The area of the utility model is reduced and one third of the heat radiating area of the furnace body surface is reduced. The two work pieces moving to opposite directions fulfill the utilization of residual heat of the work pieces thus greatly enhances the energy utilization ratio. The work piece moves along a routine of U-shaped. The feeding platform and discharging platform being provided on the same end of the furnace stops the air convection and then reduces the oxidize decarburization of the work piece.
Description
[technical field]
The utility model relates to metal heat treatmet, relates in particular to metal heat treatmet equipment.
[background technology]
Metal heat treatmet is metal works to be placed on be heated to suitable temperature in certain medium, and after in this temperature, keeping certain hour, again with a kind of technology of friction-motion speed refrigerative.Metal heat treatmet is one of important process in the machinofacture, compare with other complete processings, thermal treatment does not generally change the shape and the whole chemical ingredients of workpiece, but by changing the microstructure of workpiece inside, or change the chemical ingredients of workpiece surface, give or improve the use properties of workpiece.Be characterized in improving the inner quality of workpiece, and this generally not to be naked eyes can see.For making metal works have needed mechanical property, physicals and chemical property, except that reasonable select materials and various forming technology, thermal treatment process is requisite often.Iron and steel is a material most widely used in the mechanical industry, and the microstructure of iron and steel complexity can be controlled by thermal treatment, so the thermal treatment of iron and steel is the main contents of metal heat treatmet.In addition, aluminium, copper, magnesium, titanium etc. and alloy thereof also can change its mechanics, physics and chemical property by thermal treatment, to obtain different use propertieies.
Thermal treatment process generally comprises heating, insulation, three processes of cooling, has only two processes of heating and cooling sometimes.These processes overlap, and can not be interrupted.Heating is one of heat treated important procedure.The heating means of metal heat treatmet are a lot, are the earliest to adopt charcoal and coal as thermal source, and then using liquid and geseous fuel.The application of electricity makes heating be easy to control and non-environmental-pollution.Utilize these thermals source can direct heating, also can pass through fused salt or metal, so that the particle that floats carries out indirect heating.During METAL HEATING PROCESS, workpiece is exposed in the air, and oxidation, decarburization (being that the steel-iron components carbon contents reduces) usually take place, this for thermal treatment after the surface property of part very adverse influence is arranged.Thereby metal usually should be in controlled atmosphere or protective atmosphere, in the melting salt and heat in the vacuum, also available coating or Packaging Method are protected heating.Heating temperature is one of important technical parameter of thermal treatment process, selects and the control Heating temperature, and be the subject matter that guarantees thermal treatment quality.Heating temperature is different and different with heat treated purpose with processed metallic substance, but generally all is to be heated to more than the transformation temperature, to obtain high temperature microstructure.Changing in addition needs the regular hour, therefore when the metal works surface meets the requirements of Heating temperature, also must keep certain hour in this temperature, makes the internal and external temperature unanimity, and microstructure is changed fully, is called soaking time during this period of time.When adopting high-energy-density heating and surface heat to handle, rate of heating is exceedingly fast, and generally just do not have soaking time, and the soaking time of thermo-chemical treatment is often longer.Cooling also is an indispensable step in the heat treatment process, and method of cooling mainly is a controlled chilling speed because of technology is different.General annealed speed of cooling is the slowest, and the speed of cooling of normalizing is very fast, and the speed of cooling of quenching is faster.But go back invar kind difference and different requirements is arranged, for example empty hard steel just can harden with the same speed of cooling of normalizing.Metal heat treatmet technology can be divided into complete heat treatment substantially, surface heat is handled and the thermo-chemical treatment three major types.Different according to heating medium, Heating temperature and method of cooling, each big class can be divided into some different thermal treatment process again.Adopt different thermal treatment process with a kind of metal, can obtain different tissues, thereby have different performances.
Complete heat treatment is to the whole workpiece heating, then with suitable speed cooling, to change the metal heat treatmet technology of its whole mechanical property.The iron and steel complete heat treatment roughly has annealing, normalizing, quenching and four kinds of basic technologies of tempering.
Annealing is that workpiece is heated to proper temperature, adopt different soaking times according to material and workpiece size, slowly cool off then, purpose is the metal inside tissue to be reached or near equilibrium state, obtaining favorable manufacturability energy and use properties, perhaps is further to quench to do to organize to prepare.Normalizing is to cool off in air after workpiece is heated to suitable temperature, and the effect of normalizing is similar with annealing, and organizing of just obtaining is thinner, is usually used in improving the cutting ability of material, also is used for the part conduct final thermal treatment not high to ask for something sometimes.
Metallic heat treating furnace is to be used for equipment that metal is heat-treated, mainly is divided into flame furnace and electric furnace two classes by heat-supplying mode.Flame furnace also claims Fuel Furnace, is with solid, liquid or the geseous fuel heat output in stove workpiece to be heated; Electric furnace is in stove electric energy to be converted into heat workpiece is heated.The fuel source of flame furnace is wide, and price is low, is convenient to suit measures to local conditions to take different structures, helps reducing productive expense.To be that furnace temperature is all even be convenient to realize automatic control to the characteristics of electric furnace, and heating quality is good.By the energy transformation mode, electric furnace can be divided into resistance furnace, induction furnace and electric arc furnace again.
Metallic heat treating furnace can be divided into periodic and continous way two classes again by thermal regulation.The periodic stove claims the discontinuous stove again, and stove is interrupted to be produced, and furnace temperature changes in each heating period, mainly contains box-type furnace, Bogie hearth furnace, pit furnace etc.; Continuous furnace is the stove continuous production, divides temperature section in the burner hearth.The temperature of each section is constant in heat-processed, and workpiece progressively enters the pyritous heating zone by cryogenic preheating zone, mainly contains ring furnace, walking beam furnace, push rod furnace etc.
The flame furnace direct heating, rate of heating is fast, is difficult to realize accurate control, and the temperature control tolerance range is not high, and workpiece is had relatively high expectations to the temperature temperature control from being incubated to when cooling off, and it is low excessively to be prone to overtemperature and temperature, and environmental pollution is serious, and thermo-efficiency is lower, and the quality instability.The periodic stove carries out heating and cooling simultaneously with chassis, process furnace and workpiece, and body of heater accumulation of heat loss is big.Heat that absorbs during METAL HEATING PROCESS and the ratio that infeeds the heat in the stove are called furnace thermal efficiency.Continuous furnace is than the thermo-efficiency height of discontinuous stove, because the productivity height of continuous furnace, and be uninterrupted duty, the stove thermal system is in steady state, there is not periodic body of heater accumulation of heat loss, also because there is the section of a preheating furnace charge burner hearth inside, the flue gas part of waste heat is absorbed by the cold workpiece into stove, has reduced the temperature from kiln gas.
Present continuous ovens such as push rod furnace are to rely on pushing device with gap the charging tray and the workpiece that are placed on the track to be pushed in the stove, push away one by one of the charging tray in the stove, travel forward.Batch is big; The push rod continuous oven has also heated charging tray simultaneously at heated parts, and energy consumption is higher; The quantity of charging tray can not be too many, and process cycle is longer; The microstructure scattered error is bigger in the same stove, the product lack of homogeneity; Oxidation and decarbonization is serious; Labor intensity is big.Simultaneously, present stove is individual layer, and output is lower, and equipment is longer, floor space is bigger, and the upper wall and the lower wall of body of heater dispel the heat simultaneously, and the workpiece waste heat is not fully utilized, and energy consumption is bigger, loading bay and discharge pedestal easily form convection of air at the two ends of body of heater, cause oxidation and decarbonization.
So,, make its thermal effectiveness good if the structure of heat treatment furnace is rationally improved, floor space is less, the workpiece waste heat energy accesses and makes full use of, and is difficult between opening for feed and the discharge port forming convection of air, becomes the important topic of metal heat treatmet industry research.
[summary of the invention]
The purpose of this utility model solves the problems of the prior art exactly, proposes a kind of roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace, and thermal effectiveness is good, and floor space is little, can make full use of the workpiece waste heat, is difficult for forming convection of air between opening for feed and the discharge port.
For achieving the above object, the utility model proposes a kind of roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace, comprise stove and hoisting appliance at the bottom of input and output material platform, the roller, stove and hoisting appliance connect successively at the bottom of input and output material platform, the roller, be provided with thermofin in the stove at the bottom of the described roller, the input and output material platform comprises feeding rack and discharge rack, and one is arranged on the upper strata in feeding rack and the discharge rack, and another is arranged on lower floor.
As preferably, also comprise the vacuum air-changing chamber, described vacuum air-changing chamber is arranged at the bottom of input and output material platform and the roller between the stove.
As preferably, two-layer about described vacuum air-changing chamber is divided into, two-layer air chamber carrying roller and the transmission mechanism of also being provided with respectively up and down in the vacuum air-changing chamber.
As preferably, also comprise transmission system, transmission system comprises motor and transmission mechanism, motor is connected on the transmission mechanism, be respectively arranged with lower floor's carrying roller and the interior upper strata of stove carrying roller in some stoves at the bottom of the roller in the stove lower floor of stove and the stove upper strata, the interior upper strata of lower floor's carrying roller and stove carrying roller is arranged on the transmission mechanism in the stove.
As preferably, also be respectively arranged with transmission mechanism on feeding rack and the discharge rack, and charging carrying roller and discharging carrying roller are set respectively on transmission mechanism.
As preferably, be provided with temperature control indirect cooling device in some stoves at the bottom of the roller in the stove.
As preferably, at the bottom of the roller in the stove for dividing a heat exchange zone, temperature control heat exchange zone, a plurality of sections such as independent temperature control district up and down, be provided with the subregion insulated wall between each section.
As preferably, each section is provided with some radiator tubes, adopts full electrically heated.
As preferably, transmission system also comprises the variable frequency adjustment device, links to each other with motor, is used for realizing the stepless time adjustment of workpiece walking speed.
The beneficial effects of the utility model: the utility model is provided with thermofin in stove at the bottom of the roller, the part of stove at the bottom of the roller is separated into independently stove upper strata and stove lower floor, bilayer is heat-treated metal simultaneously, improve the output of stove, reduced the length of equipment, reduced floor space, reduce body of heater surface radiating area about 1/3 simultaneously, and double-deck up and down workpiece work is oppositely mobile, realizes the workpiece UTILIZATION OF VESIDUAL HEAT IN, thereby has improved rate of energy greatly; Workpiece moves away the U font, and loading bay and discharge pedestal make air can not form convection current at the same end of body of heater, thereby the workpiece oxidation and decarbonization is reduced; Carrying roller in loading bay carrying roller, discharge pedestal carrying roller and the stove of some horizontal rotations is set respectively in stove at the bottom of loading bay, discharge pedestal, the roller, driving above-mentioned carrying roller by transmission system rotates continuously, thereby the workpiece on the carrying roller is constantly moved forward, like this, there is not the fixed point of contact between workpiece and the roller-way, workpiece is heated evenly, nothing is damaged, be out of shape for a short time, simultaneously because carrying roller stove internal rotation at the bottom of roller all the time in the stove, heat energy loss is less relatively, thermo-efficiency height in the stove, simultaneously do not need artificial pusher, significantly reduced labour intensity, and improved efficiency; Temperature control indirect cooling device in some stoves is set in the stove, has improved the speed of cooling of workpiece in stove and cooling precision; The subregion insulated wall is set between each section, has reduced the temperature effect between section and the section, improved temperature-controlled precision, reduced energy consumption; Each section is provided with some radiator tubes, adopts full electrically heated; Also be provided with step-down gear and variable frequency adjustment device in the transmission system,, and realized the stepless time adjustment of workpiece walking speed for workpiece movement provides rational speed.
Feature of the present utility model and advantage will be elaborated in conjunction with the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the structural representation of the utility model roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace.
[embodiment]
Be illustrated in figure 1 as the structural representation of the utility model roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace.Comprise stove 2 at the bottom of input and output material platform 1, the roller, hoisting appliance 3, transmission system 4 and vacuum air-changing chamber 5, stove 2 and hoisting appliance 3 connect successively at the bottom of input and output material platform 1, vacuum air-changing chamber 5, the roller, be provided with thermofin 21 at the bottom of the roller in the stove 2, the part of stove at the bottom of the roller 2 is separated into independently stove upper strata and stove lower floor, described input and output material platform 1 comprises feeding rack 11 and discharge rack 12, one is arranged on the upper strata in feeding rack 11 and the discharge rack 12, and another is arranged on lower floor.Transmission system 4 comprises motor 41 and transmission mechanism 42, motor 41 is connected on the transmission mechanism 42, be respectively arranged with lower floor's carrying roller 22 and the interior upper strata of stove carrying roller 23 in some stoves at the bottom of the roller in the stove lower floor of stove 2 and the stove upper strata, the interior upper strata of lower floor's carrying roller 22 and stove carrying roller 23 is arranged on the transmission mechanism 42 in the stove.Also be respectively arranged with transmission mechanism 42 on feeding rack 11 and the discharge rack 12, and charging carrying roller 13 and discharging carrying roller 14 are set respectively on transmission mechanism 42.
During metal heat treatmet workpiece is placed on the feeding rack 11, open transmission system 4 and drive 13 rotations of charging carrying roller, rotation by charging carrying roller 13 is sent into workpiece at the bottom of the roller in the stove in the stove 2 on the upper strata carrying roller 23 through vacuum air-changing chamber 5, equally, because the rotation of upper strata carrying roller 23 in the stove, workpiece constantly moves forward on the upper strata carrying roller 23 in stove, handle respectively through each section in the stove 2 at the bottom of the roller, move to behind the other end of body of heater by hoisting appliance 3 workpiece upper strata carrying roller 23 in the stove is moved in the stove on lower floor's carrying roller 22, oppositely move again, move on the discharge rack 12 through vacuum air-changing chamber 5.Bilayer is heat-treated metal simultaneously up and down, improved the output of stove, reduced the length of equipment, reduced floor space, reduce body of heater surface radiating area about 1/3 simultaneously, and double-deck up and down workpiece work is oppositely mobile, realizes the workpiece UTILIZATION OF VESIDUAL HEAT IN, thereby has improved rate of energy greatly; Workpiece moves away the U font, and loading bay and discharge pedestal make air can not form convection current at the same end of body of heater, thereby the workpiece oxidation and decarbonization is reduced; Do not have the fixed point of contact between workpiece and the roller-way, workpiece is heated evenly, and nothing is damaged, and is out of shape for a short time, does not need artificial pusher again, has reduced labour intensity, has improved efficiency.
Be provided with temperature control indirect cooling device 24 in some stoves at the bottom of the roller in the stove 2.According to the heat treatment of workpieces requirement, arranging in the zone that rationally heat-eliminating medium with the speed of cooling of raising workpiece in stove and cooling precision, thereby reaches high-yield high-quality by the cooling pipe racks heat of cloth in stove.
Be divided into heat exchange zone I, temperature control heat exchange zone II, a plurality of sections such as independent temperature control district III up and down at the bottom of the roller in the stove 2, in order to reduce the temperature effect between section and the section, the raising temperature-controlled precision also cuts down the consumption of energy, be provided with subregion insulated wall 25 between each section, the quantity of section and front and back order can suitably be adjusted and reasonable Arrangement according to heat treatment requirements.Each section is provided with some radiator tubes 26, adopts full electrically heated, and radiator tube 26 can rationally distribute up and down according to the concrete heat treatment requirements of workpiece, makes furnace temperature even.
At the bottom of roller, adopt refractory insulating layer 27 around the burner hearth of stove 2, to guarantee that temperature loss is less in the stove.
The utility model can be used for the annealing and the normalizing treatment of metal heat treatmet.Not only be applicable to large-scale workpiece, and can be to adorning the basket processing than small workpiece and irregular workpiece.
Above-mentioned embodiment is to further specify of the present utility model, is not to concrete qualification of the present utility model, and any simple transformation to the utility model structure all belongs to protection domain of the present utility model.
Claims (8)
1. roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace, it is characterized in that: comprise stove (2) and hoisting appliance (3) at the bottom of input and output material platform (1), the roller, stove (2) and hoisting appliance (3) connect successively at the bottom of input and output material platform (1), the roller, be provided with thermofin (21) in the stove at the bottom of the described roller (2), input and output material platform (1) comprises feeding rack (11) and discharge rack (12), one is arranged on the upper strata in feeding rack (11) and the discharge rack (12), and another is arranged on lower floor.
2. roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace as claimed in claim 1 is characterized in that: also comprise vacuum air-changing chamber (5), described vacuum air-changing chamber (5) is arranged at the bottom of input and output material platform (1) and the roller between the stove (2).
3. roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace as claimed in claim 2 is characterized in that: described vacuum air-changing chamber (5) is divided into two-layer up and down, two-layer air chamber carrying roller and the transmission mechanism (42) of also being provided with respectively up and down in vacuum air-changing chamber (5).
4. as claim 1 or 2 or 3 described roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnaces, it is characterized in that: also comprise transmission system (4), transmission system (4) comprises motor (41) and transmission mechanism (42), motor (41) is connected on the transmission mechanism (42), be respectively arranged with lower floor's carrying roller (22) and the interior upper strata carrying roller (23) of stove in some stoves in the stove lower floor of stove at the bottom of the roller (2) and the stove upper strata, the interior upper strata carrying roller (23) of lower floor's carrying roller (22) and stove is arranged on the transmission mechanism (42) in the stove.
5. roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace as claimed in claim 4, it is characterized in that: also be respectively arranged with transmission mechanism (42) on feeding rack (11) and the discharge rack (12), and charging carrying roller (13) and discharging carrying roller (14) are set respectively on transmission mechanism (42).
6. roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace as claimed in claim 5 is characterized in that: be provided with temperature control indirect cooling device (24) in some stoves in the stove at the bottom of the roller (2).
7. roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace as claimed in claim 5, it is characterized in that: be divided into heat exchange zone (I), temperature control heat exchange zone (II), a plurality of sections in independent temperature control district (III) up and down in the stove at the bottom of the roller (2), be provided with subregion insulated wall (25) between each section.
8. as any one described roller bottom type U type UTILIZATION OF VESIDUAL HEAT IN annealing furnace among the claim 5-7, it is characterized in that: transmission system (4) also comprises the variable frequency adjustment device, links to each other with motor (41), is used for realizing the stepless time adjustment of workpiece walking speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620102803 CN2923728Y (en) | 2006-04-18 | 2006-04-18 | Roller-bottom type U-shape after-heat utilized annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620102803 CN2923728Y (en) | 2006-04-18 | 2006-04-18 | Roller-bottom type U-shape after-heat utilized annealing furnace |
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| CN2923728Y true CN2923728Y (en) | 2007-07-18 |
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| CN 200620102803 Expired - Fee Related CN2923728Y (en) | 2006-04-18 | 2006-04-18 | Roller-bottom type U-shape after-heat utilized annealing furnace |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162699A (en) * | 2010-02-24 | 2011-08-24 | 邹家福 | Partitioning device for industrial gas furnace |
| CN102220467A (en) * | 2010-04-15 | 2011-10-19 | 上海宝钢设备检修有限公司 | All-fiber mantle-mobile hot air circulation annealing furnace |
| CN104880062A (en) * | 2015-05-25 | 2015-09-02 | 绥阳县华夏陶瓷有限责任公司 | Double-layer roller-way kiln provided with lifting device |
| CN105112615A (en) * | 2015-08-27 | 2015-12-02 | 中材科技(成都)有限公司 | Gas cylinder continuous production annealing furnace |
| CN106378943A (en) * | 2015-10-23 | 2017-02-08 | 伟通工业设备（江苏）有限公司 | Full-automatic annealing furnace equipment |
| CN107883771A (en) * | 2017-12-07 | 2018-04-06 | 北京京诚凤凰工业炉工程技术有限公司 | Conveying device of roller hearth furnace |
| CN110487072A (en) * | 2019-08-28 | 2019-11-22 | 佛山市德力泰科技有限公司 | A kind of high-temp combustion plot structure of energy-saving binary channels roller kilns |
| CN114150129A (en) * | 2021-11-30 | 2022-03-08 | 江苏神铸智能科技有限公司 | Multifunctional aluminum alloy casting heat treatment device |
| WO2022110164A1 (en) * | 2020-11-30 | 2022-06-02 | 苏州中门子工业炉科技有限公司 | Heat treatment process for wear-resistant steel balls performed with residual heat from forging wear-resistant steel balls |
| WO2022110161A1 (en) * | 2020-11-30 | 2022-06-02 | 苏州中门子工业炉科技有限公司 | Heat shifting apparatus for forging waste heat of wear-resistant steel ball |
-
2006
- 2006-04-18 CN CN 200620102803 patent/CN2923728Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162699A (en) * | 2010-02-24 | 2011-08-24 | 邹家福 | Partitioning device for industrial gas furnace |
| CN102220467A (en) * | 2010-04-15 | 2011-10-19 | 上海宝钢设备检修有限公司 | All-fiber mantle-mobile hot air circulation annealing furnace |
| CN102220467B (en) * | 2010-04-15 | 2013-01-30 | 上海宝钢设备检修有限公司 | All-fiber mantle-mobile hot air circulation annealing furnace |
| CN104880062A (en) * | 2015-05-25 | 2015-09-02 | 绥阳县华夏陶瓷有限责任公司 | Double-layer roller-way kiln provided with lifting device |
| CN105112615A (en) * | 2015-08-27 | 2015-12-02 | 中材科技(成都)有限公司 | Gas cylinder continuous production annealing furnace |
| CN106378943A (en) * | 2015-10-23 | 2017-02-08 | 伟通工业设备（江苏）有限公司 | Full-automatic annealing furnace equipment |
| CN107883771A (en) * | 2017-12-07 | 2018-04-06 | 北京京诚凤凰工业炉工程技术有限公司 | Conveying device of roller hearth furnace |
| CN107883771B (en) * | 2017-12-07 | 2024-02-02 | 北京京诚凤凰工业炉工程技术有限公司 | Conveying device of roller hearth furnace |
| CN110487072A (en) * | 2019-08-28 | 2019-11-22 | 佛山市德力泰科技有限公司 | A kind of high-temp combustion plot structure of energy-saving binary channels roller kilns |
| CN110487072B (en) * | 2019-08-28 | 2024-03-19 | 佛山市德力泰科技有限公司 | High-temperature combustion zone structure of energy-saving double-channel roller kiln |
| WO2022110164A1 (en) * | 2020-11-30 | 2022-06-02 | 苏州中门子工业炉科技有限公司 | Heat treatment process for wear-resistant steel balls performed with residual heat from forging wear-resistant steel balls |
| WO2022110161A1 (en) * | 2020-11-30 | 2022-06-02 | 苏州中门子工业炉科技有限公司 | Heat shifting apparatus for forging waste heat of wear-resistant steel ball |
| CN114150129A (en) * | 2021-11-30 | 2022-03-08 | 江苏神铸智能科技有限公司 | Multifunctional aluminum alloy casting heat treatment device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070718 Termination date: 20100418 |