CN219752362U - Dual-power heating clamp capable of carrying out batch heat treatment - Google Patents

Abstract

The utility model discloses a double-power-supply heating clamp capable of carrying out batch heat treatment, which comprises a direct-current power-on heating unit, an induction heating unit, an air cooling unit and a water cooling unit; the direct current electrifying and heating unit consists of a lower base, an upper disc seat and a clamping unit arranged on the lower base and the upper disc seat, and on one hand, the clamping unit can be used for realizing batch clamping of rod-shaped or plate-shaped samples; on the other hand, the direct current electrifying and heating of the sample are realized through electrifying the lower base and the upper disc seat with the thermal simulation equipment respectively. Meanwhile, the utility model also designs an induction heating unit for realizing double-power-supply heating, and an air cooling unit is integrated on the induction heating unit and used for air injection cooling of the sample; the water cooling unit is arranged between the lower base and the upper disc seat, and the induction heating unit; the cooling device is used for cooling the lower base and the upper disc seat and also can cool the coil of the induction heating unit. Therefore, the clamp designed by the utility model can realize double-power-supply heating of direct-current power-on heating and induction heating and can also realize batch clamping of rod-shaped or plate-shaped samples.

Description

Dual-power heating clamp capable of carrying out batch heat treatment

Technical Field

The utility model relates to the technical field of material thermal processing, in particular to a dual-power heating clamp capable of carrying out batch thermal treatment.

Background

The metal (conductive) material is heated, insulated and cooled to obtain a heat treatment process with specific structure and performance, so that the machining and using requirements of the material are met. The samples obtained by the heat treatment process have larger temperature equalizing area and more samples so as to ensure the subsequent mechanical property test and microstructure analysis, thereby carrying out rationality evaluation on the heat treatment system. Currently, a muffle furnace or a thermal simulation device is generally adopted by a university, an enterprise or a research institute to perform a sample obtained by a thermal treatment test, and the use of the muffle furnace or the thermal simulation device has the following defects:

1. the muffle furnace is adopted to obtain samples in a uniform temperature zone with larger size, and a plurality of samples can be processed at one time, but the muffle furnace has low heating rate, difficult accurate control of cooling rate and small temperature rising rate and cooling rate control range;

2. the temperature rising and cooling rate can be accurately controlled by adopting thermal simulation equipment, and the temperature rising rate range can be controlled widely, but a temperature equalizing area with a large size can not be obtained, and only 1 sample can be processed at a time;

3. whether a muffle furnace or a thermal simulation testing machine is adopted, the supercooled austenite continuous cooling transition curve (CCT curve) of the metal material at different cooling speeds cannot be obtained at one time.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides a double-power-supply heating clamp capable of carrying out batch heat treatment, which can realize double-power-supply heating of direct-current power-on heating and induction heating and can also realize batch clamping of rod-shaped or plate-shaped samples.

The technical scheme adopted by the utility model is as follows:

a dual power supply heating fixture for batch heat treatment, comprising:

the direct-current power-on heating unit comprises a lower base, an upper disc seat and a clamping unit which are arranged oppositely; clamping units are detachably arranged on the lower base and the upper disc seat, and the samples are fixed between the lower base and the upper disc seat through the clamping units; the lower base and the upper disc seat are respectively provided with an electrode column connected with thermal simulation equipment; the lower base, the upper disc seat and the clamping unit are made of conductor materials;

the induction heating unit comprises an induction coil assembly, wherein the induction coil assembly is arranged between the lower base and the upper disc seat and is connected with an alternating current power supply; the induction coil component is spirally arranged and sleeved outside the sample;

the air cooling unit comprises an air jet cooler with holes, and the air jet cooler with holes is made of a pipeline with a plurality of air outlet holes uniformly distributed; the hole jet cooler is provided with an air pipe inlet, air is input into the hole jet cooler through the air pipe inlet, and the input air is ejected from an air outlet hole on the hole jet cooler;

the water cooling unit comprises a cooling water channel and a cooling water pipe, wherein the cooling water channel is respectively arranged on the lower base and the upper disc seat, and the cooling water channel between the lower base and the upper disc seat is connected by the cooling water pipe.

Further, the air cooling unit is fixedly arranged on the inner wall surface of the induction coil assembly, and the air outlet hole on the perforated jet cooler faces to the side where the sample is located.

Further, the induction coil assembly comprises an inductor, a power negative electrode binding post and a power positive electrode binding post, wherein the inductor is spirally arranged in multiple layers at equal intervals; the inductor is of a hollow design, and an inductor circulating water flow passage is formed in the inductor.

Further, the upper tray seat is provided with a diversion hole, the diversion hole corresponds to the cooling water channel and is communicated with the cooling water channel, two ends of the induction coil assembly are respectively communicated with the diversion hole on the upper tray seat, and the cooling water channel and the inductor circulating water channel are communicated to cool and dissipate heat of the coil.

Further, the lower base and the upper tray seat are respectively provided with a limiting surface for clamping the unit, and the limiting surfaces are provided with a pair of limiting surfaces which are oppositely arranged; a T-shaped slideway is arranged at the bottom between the limiting surfaces; the T-shaped slide way is connected with the bottom of the limit surface on one side and disconnected with the limit surface on the other side; a tight threaded through hole is arranged on a limit surface which is not connected with the T-shaped slide rail along the horizontal direction, and a bolt can be assembled in the tight threaded through hole.

Further, the clamping unit comprises a pressing plate and at least one cushion block, and a sample fixing position is arranged between the pressing plate and the cushion block.

Further, the pressing plate and the cushion block are provided with sliding grooves, and the pressing plate and the cushion block are matched with the T-shaped sliding way through the sliding grooves.

Further, the vertical surface at one side of the pressing plate is a plane and is arranged towards the tightly fixed threaded through hole on the limiting surface; the other side is a working surface; the working surface is provided with a plurality of vertical arc concave surfaces which are parallel to each other, and a plane is arranged between every two adjacent vertical arc concave surfaces; the two sides of the cushion block are working surfaces which are the same as the working surfaces of the pressing plate.

Further, according to the length of the limiting surface, the number of the cushion blocks is increased, and the number of the samples subjected to simultaneous heat treatment is increased.

The utility model has the beneficial effects that:

1. the utility model has the characteristic of dual-power heating, can use single-power heating or induction heating, and can also adopt mixed heating together to realize heating effects in different application scenes.

2. The utility model can be used for clamping a plurality of rod-shaped or plate-shaped samples in batches, has low requirement on the size of the samples, has no special processing requirement on the clamping end of the samples, and is simple and convenient to operate and easy to install.

3. The induction coil component is provided with a jet cooler with holes, so that a cooling effect can be realized; the distribution of holes of the perforated jet cooler can be designed into unilateral hole distribution or annular hole distribution, and then the perforated jet cooler is matched with different heating modes for use, so that different batch heat treatment effects can be achieved. For example:

the jet cooler with holes is designed into a single-side hole distribution mode by adopting the electric heating, the middle section of a sample has the same peak temperature, the sample is refrigerated by a unidirectional cooling medium during cooling, the cooling rate of the sample close to the position of the jet hole is high, and conversely, the cooling rate of the sample is low, so that the heat treatment effect of different cooling rates can be achieved, and the jet cooler is suitable for CTT curve (supercooled austenite continuous cooling transition curve) tests.

The induction heating is adopted, the perforated jet cooler is designed to be circumferentially distributed, the peak temperature of the sample near the middle section of the sample from the excircle sensor is high, and otherwise, the peak temperature of the sample near the excircle sensor is low; the cooling effect of each sample is the same when the sample is cooled by the annular cooling medium; the heat treatment effect of the same cooling rate with different peak temperatures can be realized, and the method is suitable for isothermal cooling tests.

4. The utility model uses thermal simulation equipment as a carrier and uses the clamp as a technical means, so that a temperature equalizing area (40 mm multiplied by 50 mm) with larger size can be obtained, and the subsequent machining of the size of the mechanical property test sample and the size of the microscopic test sample can be satisfied.

Drawings

FIG. 1 is a schematic diagram of the structure of the present clamp;

FIG. 2 is a schematic view of the lower base of the present clamp;

FIG. 3 is a schematic view of the upper tray of the present fixture;

FIG. 4 is a schematic view of a platen of the present clamp;

FIG. 5 is a schematic diagram of a spacer of the present fixture;

FIG. 6 is a schematic diagram of a coil assembly of the present clamp;

fig. 7 is a schematic view of the present clamp in use.

In the figure, 1, a lower base; 1-1, positioning through holes; 1-2, a cooling waterway; 1-3, reaming a waterway port; 1-4, T-shaped slide ways; 1-5, tightly fixing a threaded through hole; 1-6, a limiting surface; 1-7, electrode columns; 2. a pressing plate; 2-1, a platen facet; 2-2, a pressing plate cylindrical surface; 2-3, pressing plate sliding grooves; 2-4, a large plane of the pressing plate; 3. a cooling water pipe; 4. a cushion block; 4-1, a small plane of the cushion block; 4-2, a cylindrical surface of the cushion block; 4-3, a cushion block chute; 5. a plug; 6. a tray seat; 6-1, a shunt hole; 7. a quick male connector; 8. an induction coil assembly; 8-1, an inductor; 8-2, a power supply negative electrode binding post; 8-3, an inductor circulating water inlet; 8-4, air pipe inlet; 8-5, a jet cooler with holes; 8-6, an inductor circulating water outlet; 8-7, a power supply positive terminal; 9. a sample; 10. a bolt; 11. quick-connect female.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

A dual power supply heating fixture for batch heat treatment, comprising: the device comprises a direct current power-on heating unit, an induction heating unit, an air cooling unit and a water cooling unit.

The structure of each unit is specifically described below:

1. DC power-on heating unit

The direct current electrifying and heating unit comprises a lower base 1 and an upper tray seat 6, and a clamping unit which is detachably arranged on the lower base 1 and the upper tray seat 6.

The structure of the lower base 1 is shown in fig. 2, a limiting surface 1-6 for clamping the unit is arranged at the upper part of the lower base 1, and the limiting surfaces 1-6 are provided with a pair of limiting surfaces which are oppositely arranged; the bottom between the limiting surfaces 1-6 is provided with T-shaped slide ways 1-4. The T-shaped slide way 1-4 is connected with the bottom of the limit surface 1-6 on one side and disconnected with the limit surface 1-6 on the other side, and a gap with a certain width is reserved between the T-shaped slide way 1-4, so that the clamping unit can be conveniently detached from the T-shaped slide way 1-4. And a tight thread through hole 1-5 is arranged on a limit surface 1-6 which is not connected with the T-shaped slide way 1-4 along the horizontal direction, a bolt 10 can be assembled in the tight thread through hole 1-5, and clamping of a clamping unit on the T-shaped slide way 1-4 can be realized by adjusting the relative position of the bolt 10.

The bottom of the lower base 1 is provided with electrode columns 1-7, and the electrode columns 1-7 can be matched with an electrified electrode groove of the thermal simulation equipment.

As shown in fig. 3, the upper tray 6 has the same structure as the lower base 1, the upper tray 6 is located at the upper part of the lower base 1, and the limiting surfaces 1-6 of the upper tray 6 and the lower tray are opposite to each other, so that the sample to be processed is arranged between the upper tray 6 and the lower base 1.

The clamping unit comprises a cushion block 4 and a pressing plate 2, and the pressing plate 2 and the cushion block 4 are used for fixing a sample to be processed. With reference to FIG. 4, the bottom of the pressing plate 2 is provided with a pressing plate chute 2-3, and the pressing plate chute 2-3 is matched with the T-shaped slideway 1-4, the vertical surface on one side of the pressing plate 2 is a plane, and is arranged towards the tightly fixed threaded through hole 1-5 on the limit surface 1-6; the other side is a working surface, and the working surface is provided with a plurality of vertical arc surfaces which are parallel to each other. More specifically, the vertical circular arc surface of the pressing plate 2 is called a pressing plate cylindrical surface 2-2, a plane between adjacent pressing plate cylindrical surfaces 2-2 is a pressing plate small plane 2-1, and the top of the pressing plate 2 is a pressing plate large plane 2-4.

With reference to fig. 5, the two sides of the cushion block 4 are working surfaces, so that the working surfaces of the cushion block 4 are provided with a plurality of vertical arc surfaces which are parallel to each other. More specifically, the vertical circular arc surface of the cushion block 4 is called a cushion block cylindrical surface 4-2, and the plane between adjacent cushion block cylindrical surfaces 4-2 is a cushion block facet surface 4-1.

Because the lower base 1, the upper tray seat 6 and the cushion block 4 are made of materials with good electrical conductivity, good thermal conductivity and good processability; thus, the lower base 1 and the upper tray 6 can be electrified with the thermal simulation equipment through the electrode columns 1-7, and then the direct-current electrified heating of the sample 9 can be realized.

2. Induction heating unit

The induction heating unit includes an induction coil assembly 8, the induction coil assembly 8 including an inductor 8-1, a power negative terminal 8-2, and a power positive terminal 8-7. Wherein the inductor 8-1 is provided in a multi-layered and equally spaced spiral arrangement. One end of the inductor 8-1 is provided with a power negative electrode binding post 8-2, the other end is provided with a power positive electrode binding post 8-7, and the inductor 8-1 is respectively connected with the positive electrode and the negative electrode of an external alternating current power supply through the power negative electrode binding post 8-2 and the power positive electrode binding post 8-7; the frequency of the alternating current power supply is generally 100kHz, and induction type heating can be realized.

3. Air cooling unit

The air-cooling unit includes an air-jet cooler 8-5 with holes, and the air-jet cooler 8-5 with holes is used for cooling control of the sample 9. The perforated jet cooler 8-5 is made of a pipeline with a plurality of evenly distributed air outlet holes; the hole jet cooler 8-5 is only provided with an air pipe inlet 8-4, cooling gas medium is input into the hole jet cooler 8-5 through the air pipe inlet 8-4, and the input cooling gas medium is sprayed out from an air outlet hole on the hole jet cooler 8-5.

In this embodiment, the air cooling unit is disposed at the inner ring of the induction coil assembly 8, for example, the perforated jet cooler 8-5 is fixed at the inner side of the inductor 8-1 by welding, and the air outlet hole on the perforated jet cooler 8-5 is disposed towards the inner ring of the induction coil assembly 8.

In this embodiment, the cooling gas medium may be selected according to the actual cooling requirement, and for example, helium, nitrogen, or the like may be selected. Different cooling effects can be obtained by using different cooling gas media.

4. Water cooling unit

The water cooling unit comprises a cooling water channel 1-2 and a cooling water pipe 3. In the embodiment, the cooling waterway 1-2 is arranged on the lower base 1 and the upper tray seat 6; the lower base 1 or the upper tray 6 may be provided with a plurality of cooling water paths 1-2 as shown in fig. 2, and the plurality of cooling water paths 1-2 may be parallel to each other or perpendicular to each other. The end part of each cooling water channel 1-2 is provided with a water channel port reaming 1-3 and can be provided with a plug 5; the plug 5 can be screwed into the water path port reaming 1-3 to seal the cooling water path 1-2.

The cooling water pipe 3 is used for connecting cooling water paths 1-2 on the lower base 1 and the upper tray seat 6, so that the cooling water is transferred between the lower base 1 and the upper tray seat 6, and a complete cooling system is formed. A quick male connector 7 or a quick female connector 11 can be arranged at the tail end of the cooling water pipe 3; the quick connector 7 and the quick connector 11 are connected with a cooling water storage and recovery unit.

Preferably, in the utility model, in order to improve the compactness of the whole structure of the clamp, the air cooling unit and the water cooling unit are integrated on the induction heating unit. More specifically, a diversion hole 6-1 is arranged on the upper disc seat 6, the diversion hole 6-1 is corresponding to and communicated with the cooling waterway 1-2, circulating cooling water is communicated to the inductor circulating water inlet 8-3 through the diversion hole 6-1, and is led back into the upper disc seat 6 from the inductor circulating water outlet 8-6 for cooling and radiating the coil, and the apertures of the inductor circulating water inlet 8-3 and the inductor circulating water outlet 8-6 are 6-8mm.

The air cooling unit is provided inside the induction coil assembly 8 for cooling control of the specimen 9.

More preferably, the diameter of the cooling water channel 1-2 is 4-6mm; the diameter of the cooling water pipe 3 is 6-8mm, and the length is not less than 220mm.

More preferably, the size of the perforated jet cooler 8-5 is 6mm in outer diameter and 1.5mm in thickness; the diameter of the air outlet holes on the inner side of the cooler coil is 1mm, and the air outlet holes are distributed at intervals of 5mm.

More preferably, the area of the inner ring formed by the spiral of the inductor 8-1 is 40mm×50mm, the outer diameter of the single inductor 8-1 is 8mm, and the thickness is 1.5mm.

Preferably, the materials of the lower base 1, the upper tray seat 6, the cushion block 4 and the induction coil assembly 8 are preferably red copper, and other materials which can realize the same function can also be replaced.

More preferably, the cooling water pipe material can be polyvinyl chloride, and other materials which can realize the same function can be replaced.

More preferably, the clamping of the rod-shaped or plate-shaped sample 9 can be realized through the combination of the cushion block 4 and the pressing plate 2; in addition, the batch clamping of the samples 9 can be realized by increasing the number of the cushion blocks 4 between the pressing plates 2.

More preferably, the surfaces of the small plane 2-1 of the pressing plate, the large plane 2-4 of the pressing plate, the small plane 4-1 of the cushion block and the cylindrical surface 4-2 of the cushion block are provided with knurls or reticulate patterns, so that friction can be increased to clamp a sample.

More preferably, the lower base 1 and the upper disc seat 6 can be also provided with positioning through holes 1-1, and the lower base 1 and the upper disc seat 6 are respectively and fixedly connected to the thermal simulation equipment by utilizing the positioning through holes 1-1; the diameter of the positioning through hole 1-1 is 6-8mm.

More preferably, the sizes of the electrode columns 1-7 on the lower base 1 and the upper tray seat 6 are 22mm in diameter and 10mm in height; in particular, the connection end can be adjusted according to the size of the connection end on the thermal simulation device.

More preferably, the bolts 10 used for locking the clamping units on the lower base 1 and the upper tray seat 6 can be M5-M8, and the length is 45-60 mm. The selection of the proper size can also be performed according to the actual assembly requirement.

Preferably, the cooling water pipe 3 is made of transparent or semitransparent materials with good electrical insulation, acid and alkali resistance, high temperature resistance and wear resistance, such as polyvinyl chloride.

Preferably, the upper end surfaces of the inductor circulating water inlet 8-3 and the inductor circulating water outlet 8-6 are provided with plastic insulating layers so as to prevent interference with direct current on the upper tray seat 6.

In this embodiment, the sample 9 may be a strip, for example, having a length of 80mm to 180mm and a strip width of 5mm to 60mm and a thickness of not more than 5mm; or bar stock with the diameter of 5-8 mm. In addition, the sizes of the working surfaces of the cushion block 4 and the pressing plate 2 are optimally designed, so that the device can be suitable for samples 9 with different size requirements, and is not limited to the sizes of the samples 9 in the embodiment.

The working process of the clamp is specifically described below by respectively combining 5 metal plate strip samples with the length of 180mm, the width of 50mm and the thickness of 1.5mm as original samples.

1. The electrode column of the base is inserted into an electrified electrode groove of the thermal simulation equipment, and the base is fixed on an upper tray seat and a lower tray seat of the thermal simulation equipment by bolts;

2. the quick male connector and the quick female connector of the clamp are connected to the cooling water path branch of the thermal simulation equipment in series, so that cooling water can circulate in the lower base, the upper disc seat and the induction coil assembly of the clamp;

3. welding a thermocouple at the center of one bar or plate strip sample in the length direction and the width direction, wherein the diameter of the thermocouple is 0.2-0.5 mm;

4. 2 cushion blocks with the thickness of 10mm are arranged on a T-shaped slide way of a base, 3 plate band samples and the cushion blocks are alternately overlapped together, the innermost plate band is contacted with a limiting surface of a base, then a pressing plate is also arranged on the outermost side of the T-shaped slide way of the base to press the plate band samples and the cushion blocks, and a bolt is rotated clockwise to press the pressing plate, the plate band samples and the cushion blocks;

5. connecting the anode and the cathode of an external (or thermal simulation testing machine) high-frequency alternating current power supply with the anode and the cathode binding posts of the induction coil assembly, connecting an electromagnetic valve for controlling a cooling medium by the thermal simulation testing machine with an air pipe inlet of a perforated jet cooler, and connecting the other end of the electromagnetic valve, which is connected with a sample welding thermocouple, with a binding post of a temperature control device of thermal simulation equipment;

6. a heat treatment process is compiled on a control system of the thermal simulation equipment, and heating, heat preservation or cooling is performed in a power-on or induction or mixed mode.

The above embodiments are merely for illustrating the design concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, the scope of the present utility model is not limited to the above embodiments. Therefore, all equivalent changes or modifications according to the principles and design ideas of the present utility model are within the scope of the present utility model.

Claims (9)

1. A dual-power heating fixture for batch heat treatment, comprising:

the direct-current power-on heating unit comprises a lower base (1), an upper tray seat (6) and a clamping unit which are arranged oppositely; clamping units are detachably arranged on the lower base (1) and the upper disc seat (6), and a sample (9) is fixed between the lower base (1) and the upper disc seat (6) through the clamping units; the lower base (1) and the upper tray seat (6) are respectively provided with an electrode column (1-7) connected with thermal simulation equipment; the lower base (1), the upper tray seat (6) and the clamping unit are made of conductor materials;

the induction heating unit comprises an induction coil assembly (8), wherein the induction coil assembly (8) is arranged between the lower base (1) and the upper disc seat (6), and the induction coil assembly (8) is connected with an alternating current power supply; the induction coil component (8) is spirally arranged, and the induction coil component (8) is sleeved outside the sample (9);

the air cooling unit comprises an air jet cooler (8-5) with holes, wherein the air jet cooler (8-5) with holes is made of a pipeline with a plurality of air outlet holes uniformly distributed; the hole jet cooler (8-5) is provided with an air pipe inlet (8-4), air is input into the hole jet cooler (8-5) through the air pipe inlet (8-4), and the input air is sprayed out from an air outlet hole on the hole jet cooler (8-5);

the water cooling unit comprises a cooling water channel (1-2) and a cooling water pipe (3), wherein the cooling water channel (1-2) is respectively arranged on the lower base (1) and the upper disc seat (6), and the cooling water pipe (3) is used for connecting the cooling water channel (1-2) between the lower base (1) and the upper disc seat (6).

2. The dual-power heating fixture capable of carrying out batch heat treatment according to claim 1, wherein the air cooling unit is fixedly arranged on the inner wall surface of the induction coil assembly (8), and the air outlet hole on the perforated jet cooler (8-5) faces the side of the sample (9).

3. A dual power heating fixture capable of batch heat treatment as claimed in claim 1 or 2, wherein the induction coil assembly (8) comprises an inductor (8-1), a power negative terminal (8-2) and a power positive terminal (8-7), wherein the inductor (8-1) is spirally provided with a plurality of layers at equal intervals; the inductor (8-1) is of a hollow design, and an inductor circulating water flow passage is arranged inside the inductor.

4. A dual-power heating clamp capable of carrying out batch heat treatment according to claim 3 is characterized in that a diversion hole (6-1) is formed in the upper tray seat (6), the diversion hole (6-1) corresponds to the cooling water channel (1-2) and is mutually communicated, two ends of the induction coil assembly (8) are respectively communicated with the diversion hole (6-1) in the upper tray seat (6), and communication between the cooling water channel (1-2) and an inductor circulating water channel is realized, so that the coil is cooled and radiated.

5. The dual-power heating clamp capable of carrying out batch heat treatment according to claim 1, wherein limiting surfaces (1-6) for clamping units are arranged on the lower base (1) and the upper tray seat (6), and the limiting surfaces (1-6) are provided with a pair of limiting surfaces and are oppositely arranged; a T-shaped slideway (1-4) is arranged at the bottom between the limiting surfaces (1-6); the T-shaped slide way (1-4) is connected with the bottom of the limit surface (1-6) on one side and disconnected with the limit surface (1-6) on the other side; a tight threaded through hole (1-5) is arranged on a limit surface (1-6) which is not connected with the T-shaped slide way (1-4) along the horizontal direction, and a bolt (10) can be assembled in the tight threaded through hole (1-5).

6. The dual power supply heating fixture capable of carrying out batch heat treatment according to claim 5, wherein the clamping unit comprises a pressing plate (2) and at least one cushion block (4), and a fixing place for the sample (9) is arranged between the pressing plate (2) and the cushion block (4).

7. The dual-power heating clamp capable of carrying out batch heat treatment according to claim 6, wherein the pressing plate (2) and the cushion block (4) are provided with sliding grooves, and the sliding grooves are matched with the T-shaped sliding ways (1-4).

8. A dual power supply heating fixture for batch heat treatment according to claim 5, characterized in that it is provided towards the tightly threaded through hole (1-5) on the limit surface (1-6); the other side is a working surface; the working surface is provided with a plurality of vertical arc concave surfaces which are parallel to each other, and a plane is arranged between every two adjacent vertical arc concave surfaces; the two sides of the cushion block (4) are working surfaces which are the same as the working surfaces of the pressing plate (2).

9. A dual power supply heating jig for batch heat treatment according to claim 1, wherein the number of pads (4) is increased according to the length of the limiting surfaces (1-6), and the number of samples (9) to be heat treated at the same time is increased.