CN110480889B - Hardening furnace for hardening resin grinding wheel - Google Patents
Hardening furnace for hardening resin grinding wheel Download PDFInfo
- Publication number
- CN110480889B CN110480889B CN201910927071.9A CN201910927071A CN110480889B CN 110480889 B CN110480889 B CN 110480889B CN 201910927071 A CN201910927071 A CN 201910927071A CN 110480889 B CN110480889 B CN 110480889B
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- resistor
- heating
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- circuit
- triode
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- 239000011347 resin Substances 0.000 title claims abstract description 16
- 229920005989 resin Polymers 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 95
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 239000003990 capacitor Substances 0.000 claims description 33
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/007—Tempering units for temperature control of moulds or cores, e.g. comprising heat exchangers, controlled valves, temperature-controlled circuits for fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C2035/0211—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould resistance heating
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Control Of Resistance Heating (AREA)
Abstract
The invention provides a hardening furnace for hardening a resin grinding wheel, which comprises a furnace body with a heating cavity and a track which is connected in the heating cavity of the furnace body and used for conveying the grinding wheel, wherein a plurality of temperature sensors are uniformly arranged on the side wall of the heating cavity of the furnace body, and a plurality of thermocouple heating resistance wires are detachably connected on the inner wall of the periphery of the heating cavity of the furnace body; the invention also discloses a temperature detection control device, which comprises a furnace body, a temperature sensor, a temperature detection control circuit, a control chip CPU, a processing heating circuit, a control chip CPU, a control circuit, a temperature control device and a control circuit, wherein the controller is further arranged on the outer wall of the furnace body and electrically connected with the temperature sensor.
Description
Technical Field
The invention relates to the technical field of grinding wheel hardening processing equipment, in particular to a hardening furnace for resin grinding wheel hardening.
Background
The resin grinding wheel is generally subjected to a hardening treatment by a hardening furnace after being processed and molded, wherein the hardening treatment refers to the step of obtaining a surface hardening layer by a heat treatment mode, the heating temperature in the hardening furnace is kept constant, which is an indispensable condition for carrying out surface hardening on the resin grinding wheel, and once the temperature in the hardening furnace is suddenly increased or reduced, the stability of the surface hardening of the resin grinding wheel cannot be ensured, so the hardening furnace for hardening the resin grinding wheel is provided to effectively solve the defects in the current situation.
Disclosure of Invention
The invention aims to overcome the defects of the technology, provides a hardening furnace for hardening a resin grinding wheel, and aims to solve the problem that when the hardening furnace carries out heating hardening treatment on the surface of the resin grinding wheel, the temperature in the furnace is unstable due to non-constant heating temperature, so that the surface hardening stability of the resin grinding wheel is poor.
In order to achieve the technical aim, the invention provides a hardening furnace for hardening a resin grinding wheel, which comprises a furnace body with a heating cavity and a track which is connected in the heating cavity of the furnace body and used for conveying the grinding wheel, wherein a plurality of temperature sensors are uniformly arranged on the side wall of the heating cavity of the furnace body, and a plurality of thermocouple heating resistance wires TC are detachably connected on the inner wall of the periphery of the heating cavity of the furnace body; and a controller is further arranged on the outer wall of the furnace body and is electrically connected with a plurality of temperature sensors.
Further, the controller at least comprises a power supply circuit, a temperature detection control circuit and a heating circuit, wherein the power supply circuit is respectively and electrically connected with the temperature detection control circuit and the heating circuit and is used for driving and supplying power, the input end of the temperature detection control circuit is in signal connection with the temperature sensor, and the output end of the temperature detection control circuit is electrically connected with the heating circuit; the temperature detection control circuit is used for detecting the temperature in the heating cavity of the furnace body; the heating circuit is used for electrifying and heating the thermocouple heating resistance wire TC installed in the heating cavity to heat the heating cavity, and heating the heating cavity at the temperature.
Further, the temperature detection control circuit includes a control chip CPU, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, an eighth resistor R8, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first diode VD1 and a second diode VD2, one end of the fourth resistor R4 is electrically connected with the third resistor R3, the other end is connected with the input end of the fifth resistor R5, the output end of the fifth resistor R5 is tapped to the twelfth pin of the control chip CPU and the positive electrode of the second capacitor C2, the negative electrode of the second capacitor C2 is connected with the thirteenth pin of the control chip CPU, the ninth pin of the control chip CPU is connected with the negative electrode of the second diode VD2, the positive electrode of the second diode VD2 is connected with the negative electrode of the fourth capacitor C4, the positive electrode of the fourth capacitor C4 is connected with one end of the eighth resistor R8, and the other end of the eighth resistor R8 is tapped to the twelfth pin of the control chip CPU and the eighth pin of the fourth capacitor C4, and the seventh resistor R7 is further connected.
Further, a third pin of the control chip CPU is connected with a negative electrode of the third capacitor C3, an anode of the third capacitor C3 is connected with a first pin of the control chip CPU, the first pin of the control chip CPU is further connected with the third resistor R3, and a second pin of the control chip CPU is connected with an input end of the fourth resistor R4.
Further, the output end of the third resistor R3 is connected to the heating circuit, and the heating circuit at least includes a rectifier UR, a first resistor R1, a second resistor R2, a third light emitting diode VD3, a first triode VT1, a second triode VT2, and a third phototransistor VT3, the input end of the rectifier UR is connected to a first capacitor C1, the positive electrode of the first capacitor C1 is connected to one side of the third resistor R3, and the negative electrode of the first capacitor C1 is connected to the seventh resistor R7; the output end of the rectifier UR is tapped to the positive electrode of the third light emitting diode VD3, the input end of the thermocouple heating resistance wire TC and the emitter of the second triode VT2, the negative electrode of the third light emitting diode VD3 is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the collector of the first triode VT1, the base of the first triode VT1 is electrically connected with the seventh resistor R7, and the emitter of the first triode VT1 is grounded.
Further, the output end of the thermocouple heating resistance wire TC is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to the collector of the third phototransistor VT3, the emitter of the third phototransistor VT3 is connected to the collector of the second triode VT2, the base of the second triode VT2 is connected to the input end of the first resistor R1, and the emitter of the second triode VT2 is connected to the transformer T.
Further, the heating circuit at least comprises a three-phase power supply U, a control switch K and a fuse FU, one end of the control switch K is connected with the positive electrode of the three-phase power supply U, the other end of the control switch K is connected with the input end of the fuse FU, the output end of the fuse FU is electrically connected with a transformer T, and the enabling end of the transformer T is connected with the negative electrode of the three-phase power supply U.
Compared with the prior art, the invention has the advantages that the temperature detection control circuit converts the temperature signal acquired by the temperature sensor arranged in the furnace body into the electric signal, the electric signal is transmitted to the temperature detection control circuit to detect the temperature in the furnace body, when the actual temperature in the furnace body is detected to be lower than the manually set temperature, the control chip CPU controls the processing heating circuit to be conducted, the thermocouple heating resistance wire TC in the conducted heating circuit is electrified to heat and heat the temperature, so that the temperature in the furnace body is increased, when the temperature in the furnace body is increased to the set temperature threshold, the control chip controls the on-off of the current in the heating circuit, and the thermocouple heating resistance wire TC arranged on the side wall of the furnace body is powered off to stop heating and heat up, so that the temperature in the furnace body is constant, the stability of the surface hardening heat treatment of the resin grinding wheel in the furnace body is ensured, and the yield of the grinding wheel is ensured.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a general schematic diagram of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the furnace body and the controller according to the present invention;
FIG. 3 is a detailed schematic diagram of the temperature detection control circuit, the heating circuit and the power circuit according to the present invention.
In the figure: furnace body 1, track 2, heating chamber 3, temperature sensor 4, controller 5, temperature detection control circuit 10, heating circuit 20, power supply circuit 30.
Detailed Description
In order to further illustrate the technical means and effects adopted to achieve the above purpose of the present invention, the following detailed description of the embodiments, structures, features and effects of the present invention will be given with reference to the accompanying drawings and preferred embodiments, and it should be understood that the embodiments described herein are merely for explaining the present invention and are not limiting the present invention.
The invention provides a hardening furnace for hardening resin grinding wheels, which is shown in the figures 1-3, and comprises a furnace body 1 with a heating chamber 3 and a track 2 which is connected in the heating chamber 3 of the furnace body 1 and used for transporting the grinding wheels, wherein a plurality of temperature sensors 4 are uniformly arranged on the side wall of the heating chamber 3 of the furnace body 1, and a plurality of thermocouple heating resistance wires TC are detachably connected on the inner wall of the periphery of the heating chamber 3 of the furnace body 1; the outer wall of the furnace body 1 is also provided with a controller 5, the controller 5 is electrically connected with a plurality of temperature sensors 4, wherein the controller 5 comprises a power circuit 30, a temperature detection control circuit 10 and a heating circuit 20, the power circuit 30 is respectively electrically connected with the temperature detection control circuit 10 and the heating circuit 20 and is used for driving and supplying power, the input end of the temperature detection control circuit 10 is in signal connection with the temperature sensors 4, and the output end of the temperature detection control circuit is electrically connected with the heating circuit 20; a temperature detection control circuit 10 for detecting the temperature in the heating chamber 3 of the furnace body 1; the heating circuit 20 is used for heating the heating chamber 3 by energizing the thermocouple heating resistance wire TC.
In a preferred embodiment, in conjunction with fig. 3, in order to enable the temperature in the heating chamber 3 of the hardening furnace to reach a set threshold, after the temperature sensor 4 collects a temperature value, the heating of the thermocouple heating resistance wire TC on the side wall of the furnace body 1 can be effectively stopped, and therefore, the temperature detection control circuit 10 includes a control chip CPU, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, an eighth resistor R8, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first diode VD1 and a second diode VD2, wherein the model of the control chip is CD4526, one end of the fourth resistor R4 is electrically connected with a third resistor R3, the other end of the fourth resistor R5 is connected with an input end of the fifth resistor R5, an output end of the fifth resistor R5 is tapped to a twelfth pin of the control chip CPU and an anode of the second capacitor C2, a ninth pin of the control chip CPU is connected with a thirteenth pin of the control chip CPU, a cathode of the control chip CPU 2 is connected with a cathode of the second diode C2, a fourth pin of the fourth resistor C4 is further tapped to the fourth resistor C4, and the fourth pin of the fourth resistor C4 is connected with an input end of the fourth resistor C3, and the fourth resistor C4 is further connected with an input end of the fourth resistor C4 is connected with the fourth pin of the fourth resistor C3, and the fourth resistor C4 is connected with the fourth pin of the fourth resistor C3.
In a preferred embodiment, as shown in fig. 1 and 3, in order to implement indirect repeated heating or stopping of the thermocouple heating wire TC on the side wall of the heating chamber 3 of the furnace body 1, the output end of the third resistor R3 is connected to the heating circuit 20, and the heating circuit 20 at least includes a rectifier UR, a first resistor R1, a second resistor R2, a third light emitting diode VD3, a first triode VT1, a second triode VT2, and a third phototransistor VT3, the input end of the rectifier UR is connected to a first capacitor C1, the positive electrode of the first capacitor C1 is connected to one side of the third resistor R3, and the negative electrode of the first capacitor C1 is connected to a seventh resistor R7; the output end of the rectifier UR is connected with the positive electrode of the third light emitting diode VD3, the input end of the thermocouple heating resistance wire TC and the emitter of the second triode VT2 in a tapping mode, the negative electrode of the third light emitting diode VD3 is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the collector of the first triode VT1, the base of the first triode VT1 is electrically connected with the seventh resistor R7, the emitter of the first triode VT1 is grounded, meanwhile, the output end of the thermocouple heating resistance wire TC is connected with one end of the first resistor R1, the other end of the first resistor R1 is connected with the collector of the third phototransistor VT3, the emitter of the third phototransistor VT3 is connected with the collector of the triode VT2, the base of the second triode VT2 is connected with the input end of the first resistor R1, and the emitter of the second triode VT2 is connected with the transformer T.
In a preferred embodiment, referring to fig. 3, in order to provide stable and effective current to the temperature detection control circuit 10 and the heating circuit 20, the heating circuit 20 at least includes a three-phase power supply U, a control switch K, and a fuse FU, wherein one end of the control switch K is connected to a positive pole of the three-phase power supply AC, the other end of the control switch K is connected to an input end of the fuse FU, an output end of the fuse FU is electrically connected to a transformer T, and an enable end of the transformer T is connected to a negative pole of the three-phase power supply AC.
The invention has the working flow:
When the resin grinding wheel to be processed is conveyed into the heating chamber 3 of the furnace body 1 through the track 2 and is subjected to heat hardening treatment in the heating chamber 3, after a temperature value is manually set on the controller 5, if the temperature in the furnace body 1 is reduced by a set temperature threshold value, a temperature sensor 4 arranged on the inner wall of the heating chamber 3 transmits a collected temperature signal to the temperature detection control circuit 10 through integration treatment by an electric signal, the temperature detection control circuit 10 carries out analysis treatment by a control chip CPU, a sixth pin and a ninth pin of the control chip CPU are controlled to simultaneously output high level, the first diode VD1 and the second diode VD2 are cut off, the first triode VT1 is conducted, the third light emitting diode VD3 is lighted, and the third phototransistor VT3 is conducted, so that the second triode VT2 is triggered to be conducted, namely, the thermocouple heating wire TC is electrified to start heating, and the temperature in the heating chamber 3 is further promoted;
If the temperature in the heating chamber 3 rises to the set temperature threshold, the temperature sensor 4 transmits the collected temperature signal to the control chip CPU, the first diode VD1 is turned on after the sixth pin of the control chip CPU is changed to output a low level, the first triode VT1 and the second triode VT2 are turned off, and the thermocouple heating resistance wire TC is powered off to stop heating at the moment, so that the temperature in the heating chamber 3 is reduced.
The above embodiments are only preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this invention are also within the scope of the invention.
Claims (1)
1. The hardening furnace for hardening the resin grinding wheel comprises a furnace body (1) with a heating chamber (3) and a track (2) which is connected in the heating chamber (3) of the furnace body (1) and used for transporting the grinding wheel, and is characterized in that a plurality of temperature sensors (4) are uniformly arranged on the side wall of the heating chamber (3) of the furnace body (1), and a plurality of thermocouple heating resistance wires TC are detachably connected on the inner wall of the periphery of the heating chamber (3) of the furnace body (1); a controller (5) is further arranged on the outer wall of the furnace body (1), and the controller (5) is electrically connected with a plurality of temperature sensors (4);
The controller (5) at least comprises a power supply circuit (30), a temperature detection control circuit (10) and a heating circuit (20), wherein the power supply circuit (30) is electrically connected with the temperature detection control circuit (10) and the heating circuit (20) respectively and is used for driving and supplying power, the input end of the temperature detection control circuit (10) is in signal connection with the temperature sensor (4), and the output end of the temperature detection control circuit is electrically connected with the heating circuit (20); the temperature detection control circuit (10) is used for detecting the temperature in the heating chamber (3) of the furnace body (1);
The heating circuit (20) is used for electrifying and heating the thermocouple heating resistance wire TC installed on the heating chamber (3) to heat the heating chamber;
The temperature detection control circuit (10) comprises a control chip CPU, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, an eighth resistor R8, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first diode VD1 and a second diode VD2, wherein one end of the fourth resistor R4 is electrically connected with the third resistor R3, the other end of the fourth resistor R4 is connected with the input end of the fifth resistor R5, the output end of the fifth resistor R5 is in tapping connection with a twelfth pin of the control chip CPU and an anode of the second capacitor C2, a cathode of the second capacitor C2 is connected with a thirteenth pin of the control chip CPU, a ninth pin of the control chip CPU is connected with a cathode of the second diode VD2, an anode of the second diode VD2 is connected with a cathode of the fourth capacitor C4, an anode of the fourth capacitor C4 is connected with one end of the eighth resistor R8, and the other end of the eighth resistor R8 is in tapping connection with a fourth pin of the control chip CPU and a seventh pin of the fourth capacitor C4;
The third pin of the control chip CPU is connected with the negative electrode of the third capacitor C3, the positive electrode of the third capacitor C3 is connected with the first pin of the control chip CPU, the first pin of the control chip CPU is also connected with the third resistor R3, and the second pin of the control chip CPU is connected with the input end of the fourth resistor R4;
The output end of the third resistor R3 is connected with the heating circuit (20), the heating circuit (20) at least comprises a rectifier UR, a first resistor R1, a second resistor R2, a third light emitting diode VD3, a first triode VT1, a second triode VT2 and a third phototransistor VT3, the input end of the rectifier UR is connected with a first capacitor C1, the positive electrode of the first capacitor C1 is connected with one side of the third resistor R3, and the negative electrode of the first capacitor C1 is connected with a seventh resistor R7; the output end of the rectifier UR is tapped to the positive electrode of the third light emitting diode VD3, the input end of the thermocouple heating resistance wire TC and the emitter of the second triode VT2, the negative electrode of the third light emitting diode VD3 is connected with one end of the second resistor R2, the other end of the second resistor R2 is connected with the collector of the first triode VT1, the base of the first triode VT1 is electrically connected with the seventh resistor R7, and the emitter of the first triode VT1 is grounded;
The output end of the thermocouple heating resistance wire TC is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected with the collector of the third phototransistor VT3, the emitter of the third phototransistor VT3 is connected with the collector of the second triode VT2, the base of the second triode VT2 is connected with the input end of the first resistor R1, and the emitter of the second triode VT2 is connected with a transformer T;
The heating circuit (20) at least comprises a three-phase power supply U, a control switch K and a fuse FU, one end of the control switch K is connected with the positive electrode of the three-phase power supply AC, the other end of the control switch K is connected with the input end of the fuse FU, the output end of the fuse FU is electrically connected with a transformer T, and the enabling end of the transformer T is connected with the negative electrode of the three-phase power supply AC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910927071.9A CN110480889B (en) | 2019-09-27 | 2019-09-27 | Hardening furnace for hardening resin grinding wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910927071.9A CN110480889B (en) | 2019-09-27 | 2019-09-27 | Hardening furnace for hardening resin grinding wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110480889A CN110480889A (en) | 2019-11-22 |
| CN110480889B true CN110480889B (en) | 2024-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910927071.9A Active CN110480889B (en) | 2019-09-27 | 2019-09-27 | Hardening furnace for hardening resin grinding wheel |
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| Country | Link |
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| CN (1) | CN110480889B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419605A (en) * | 2011-11-07 | 2012-04-18 | 英利集团有限公司 | Heating temperature control device and photovoltaic module decomposition and recovery equipment provided with same |
| CN104536493A (en) * | 2015-01-29 | 2015-04-22 | 吴萍 | Heating control device |
| CN207622498U (en) * | 2017-12-25 | 2018-07-17 | 珠海大白鲨磨料磨具有限公司 | A kind of grinding wheel hardening furnace that multistage Intelligent heating is adjusted |
| CN210791700U (en) * | 2019-09-27 | 2020-06-19 | 湖北磊鑫研磨科技股份有限公司 | Hardening furnace for hardening resin grinding wheel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6814565B2 (en) * | 1997-12-19 | 2004-11-09 | Saint-Cobain Abrasives Technology Company | Support fixture for thermal curing processes |
| CN104810873B (en) * | 2014-01-28 | 2018-03-16 | 广东欧珀移动通信有限公司 | Electronic equipment battery charge controller and method |
| CN204392107U (en) * | 2015-02-10 | 2015-06-10 | 深圳市圣诺科技有限公司 | Converter circuit and switching power supply |
| JP6791797B2 (en) * | 2017-03-31 | 2020-11-25 | トヨタ自動車株式会社 | Fuel tank manufacturing equipment |
-
2019
- 2019-09-27 CN CN201910927071.9A patent/CN110480889B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419605A (en) * | 2011-11-07 | 2012-04-18 | 英利集团有限公司 | Heating temperature control device and photovoltaic module decomposition and recovery equipment provided with same |
| CN104536493A (en) * | 2015-01-29 | 2015-04-22 | 吴萍 | Heating control device |
| CN207622498U (en) * | 2017-12-25 | 2018-07-17 | 珠海大白鲨磨料磨具有限公司 | A kind of grinding wheel hardening furnace that multistage Intelligent heating is adjusted |
| CN210791700U (en) * | 2019-09-27 | 2020-06-19 | 湖北磊鑫研磨科技股份有限公司 | Hardening furnace for hardening resin grinding wheel |
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| CN110480889A (en) | 2019-11-22 |
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