Segmented heating and heat preservation device for coating vacuum remelting

Abstract

The utility model relates to the field of workpiece coating vacuum remelting, and discloses a segmented heating and heat preservation device for coating vacuum remelting, which comprises a lower heat preservation box and an upper heat preservation cover rotationally mounted on the lower heat preservation box, the acetylene combustion furnace is fixed on one side of the bottom end of the lower heat preservation box, the high-temperature furnace is fixed on the other side of the bottom end of the lower heat preservation box, the two gas input ports are formed in the bottom end of the lower heat preservation box, and the two gas input ports are in through connection with the acetylene combustion furnace and the high-temperature furnace respectively; a cooling pipe is fixedly installed in the lower heat preservation box. Partition assemblies used for machining workpieces in a segmented mode are arranged in the lower heat preservation box and the upper heat preservation cover; the lower heat preservation box and the upper heat preservation cover are each internally provided with a clamping assembly for clamping and limiting the machining position of a workpiece. According to the heating and heat preservation device, the space proportion of the heating areas on the two sides of the interior can be adjusted according to the machining requirement of a metal pipe workpiece, and the application adjustability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of workpiece coating vacuum remelting, in particular to a kind of segmented heating and heat preservation device for coating vacuum remelting. BACKGROUND

[0002] The coating outside the workpiece can achieve higher hardness after high-temperature solidification treatment, and can also enhance the corrosion resistance and adhesion of the coating. The high-temperature gas during acetylene combustion can make the coating reach a molten or semi-molten state in a short time and solidify rapidly. Due to the need for assembly, some workpieces do not need to be coated locally, and need to be heated and treated in sections during high-temperature heating and solidification.

[0003] Chinese patent CN221208813U discloses a segmented oven for coating equipment, comprising an oven body, a through baking chamber is provided on one side of the oven body, the baking chamber is composed of a first chamber, a second chamber and a third chamber arranged in sequence, and heating air chambers are provided on both sides of the first chamber, the second chamber and the third chamber of the oven body, and three circulating air chambers are provided on the inner side of the oven body above the baking chamber; the coated object is carried from the spraying chamber to the baking chamber of the oven body by the carrier trolley, so that the coated object passes through the first chamber, the second chamber and the third chamber of the baking chamber in sequence, and the heating mechanisms in the heating air chambers on both sides of the first chamber, the second chamber and the third chamber correspond to low temperature, medium temperature and high temperature respectively, and the coated object is sequentially subjected to low temperature, medium temperature and high temperature baking, and the surface coating solidification effect is good.

[0004] The above-mentioned patent sequentially heats and treats the workpiece through the first chamber, the second chamber and the third chamber, so that the coating on the surface of the workpiece is slowly heated and solidified, and the segmented processing of the surface of the workpiece can also be realized. However, the size of each chamber cannot be adjusted, and the proportion of different workpieces according to their assembly needs for segmented processing is different, and the heating and heat preservation device is difficult to reasonably control the proportion of different temperature heating areas inside, the application adjustment is limited, in addition, the heating area is large, and the heat is difficult to quickly and uniformly distribute, which is not conducive to uniform solidification treatment of the surface of the workpiece. UTILITY MODEL CONTENTS

[0005] In view of the above problems, a segmented heating and heat preservation device for coating vacuum remelting is provided, which can adjust the proportion of different temperature heating areas in the heating and heat preservation device according to the processing needs of the workpiece by the separation assembly, solving the problem that the size of each chamber cannot be adjusted, the proportion of different workpieces according to their assembly needs for segmented processing is different, the heating and heat preservation device is difficult to reasonably control the proportion of different temperature heating areas inside, and the application adjustment is limited.

[0006] To solve the prior art problems, the utility model provides a kind of segmented heating and heat preservation device for coating vacuum remelting, including lower heat preservation box and upper heat preservation cover rotationally installed on lower heat preservation box, segmented heating and heat preservation device further include fixed in the one side of lower heat preservation box bottom end acetylene combustion furnace, fixed in the other side of lower heat preservation box bottom end high temperature furnace, install two gas input ports in the bottom end of lower heat preservation box, two gas input ports are connected with acetylene combustion furnace, high temperature furnace through respectively;Cooling tube is fixedly installed in lower heat preservation box;Lower heat preservation box and upper heat preservation cover are equipped with the separation component for segmented processing workpiece;Lower heat preservation box and upper heat preservation cover are equipped with the clamping assembly for clamping and limiting workpiece processing position.

[0007] Preferably, the separation component includes a guide slide fixed to the inner wall of the upper heat preservation cover and the lower heat preservation box, an upper separation heat preservation plate is slidably installed on the guide slide in the upper heat preservation cover, a lower separation heat preservation plate is slidably installed on the guide slide in the lower heat preservation box, a displacement cylinder is fixedly installed in the upper heat preservation cover, and the output end of the displacement cylinder is fixedly connected with the upper separation heat preservation plate; a circular groove coaxial with the cooling tube is formed in the upper separation heat preservation plate and the lower separation heat preservation plate.

[0008] Preferably, a clamping strip is fixed to the upper separation heat preservation plate, a clamping groove is formed in the lower separation heat preservation plate, the length of the clamping strip is less than the length of the clamping groove, and the clamping strip is connected with the clamping groove in a clamping manner.

[0009] Preferably, the upper separation heat preservation plate and the lower separation heat preservation plate are provided with a dispersion mechanism for rotating and uniformly dispersing high-temperature gas.

[0010] Preferably, the dispersion mechanism includes an arc-shaped sliding groove formed in the upper separation heat preservation plate and the lower separation heat preservation plate, the arc-shaped sliding groove and the circular groove are mutually through, a sliding bead is slidably connected in the arc-shaped sliding groove, an arc-shaped slide strip is installed on the sliding bead, two fixing frames are fixedly and symmetrically arranged on the arc-shaped slide strip with respect to the arc-shaped sliding groove, and a cylindrical rod is fixedly connected to the fixing frames.

[0011] Preferably, the clamping assembly includes a hollow circular seat rotationally installed in the lower heat preservation box and the upper heat preservation cover, the hollow circular seat is coaxially sleeved outside the cooling tube, a support frame is fixedly installed on the hollow circular seat, and a clamping seat is rotationally connected to the support frame; a lifting cylinder is fixedly installed on the support frame, a lifting block is fixed to the output end of the lifting cylinder, a driving rod is rotationally connected to the lifting block, and the driving rod is rotationally connected with the clamping seat.

[0012] Preferably, a power gear is rotationally connected in the lower heat preservation box, a gear ring is meshingly connected beside the power gear, and the gear ring is fixed outside the hollow circular seat in the lower heat preservation box.

[0013] The utility model has the beneficial effects compared with the prior art:

[0014] 1. The utility model discloses a separate component can adjust the proportion of different heating area in the heating and heat preservation device according to the processing needs, according to the need of the workpiece surface coating heating length, the operation shift cylinder controls the transverse movement of the upper partition heat preservation board and the lower partition heat preservation board, adjusts the proportion of different heating area after the combination of lower heat preservation box and upper heat preservation cover, so as to be applicable to the workpiece heat treatment processing of different needs.

[0015] 2. The utility model discloses a dispersion mechanism can rotate and disperse the heating gas in the heating and heat preservation device, and the workpiece processing position is limited through the clamping assembly during processing, and the workpiece rotates through the clamping assembly control, and the dispersion mechanism in the upper partition heat preservation board and the lower partition heat preservation board rotates synchronously under the driving of the workpiece, and the cylindrical rod in the dispersion mechanism rotates on both sides of the upper partition heat preservation board and the lower partition heat preservation board respectively, stirs and disperses the gas in different heating area, so that the hot gas is evenly dispersed, and the effect of the workpiece surface heat treatment is improved. ACCURACY OF DRAWINGS

[0016] Figure 1 It is the upper heat preservation cover closing structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0017] Figure 2 It is the upper heat preservation cover opening structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0018] Figure 3 It is the clamping assembly three-dimensional structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0019] Figure 4 It is the upper partition heat preservation board three-dimensional structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0020] Figure 5 It is the arc slide three-dimensional structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0021] Figure 6 It is the lower heat preservation box three-dimensional structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0022] Figure 7 It is the cooling pipe three-dimensional structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0023] Figure 8 It is the gear ring three-dimensional structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0024] Figure 9 It is the clamping seat three-dimensional structure schematic diagram of the segmented heating and heat preservation device for coating vacuum remelting.

[0025] The reference signs in the drawings are:

[0026] 11, lower heat preservation box; 12, upper heat preservation cover; 13, acetylene combustion furnace; 14, high temperature furnace; 15, gas input port; 16, cooling pipe; 2, separation assembly; 21, guide slide; 22, upper separation heat preservation plate; 23, lower separation heat preservation plate; 24, displacement cylinder; 25, round groove; 26, clamping strip; 27, clamping groove; 3, dispersion mechanism; 31, arc-shaped sliding groove; 32, sliding ball; 33, arc-shaped sliding strip; 34, fixing frame; 35, cylindrical rod; 4, clamping assembly; 41, hollow circular seat; 411, power gear; 412, gear ring; 42, support frame; 43, clamping seat; 44, lifting cylinder; 45, lifting block; 46, driving rod. DETAILED DESCRIPTION

[0027] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below in combination with the drawings and specific embodiments.

[0028] Referring to Figures 1-4 As shown in the drawings, a segmented heating and heat preservation device for coating vacuum remelting includes a lower heat preservation box 11 and an upper heat preservation cover 12 rotatably installed on the lower heat preservation box 11. The segmented heating and heat preservation device further includes an acetylene combustion furnace 13 fixed on one side of the bottom end of the lower heat preservation box 11, a high temperature furnace 14 fixed on the other side of the bottom end of the lower heat preservation box 11, and two gas input ports 15 installed at the bottom end of the lower heat preservation box 11. The two gas input ports 15 are respectively connected with the acetylene combustion furnace 13 and the high temperature furnace 14. A cooling pipe 16 is fixedly installed in the lower heat preservation box 11. The lower heat preservation box 11 and the upper heat preservation cover 12 are provided with a separation assembly 2 for segmented processing of workpieces. The lower heat preservation box 11 and the upper heat preservation cover 12 are both provided with a clamping assembly 4 for clamping and limiting the processing position of the workpieces.

[0029] Before processing, the upper heat preservation cover 12 is rotated to open, the metal pipe workpiece is coaxially sleeved outside the cooling pipe 16, the metal pipe workpiece is clamped and defined through the clamping assembly 4 in the lower heat preservation box 11, the upper heat preservation cover 12 is closed on the lower heat preservation box 11 by rotating again, the upper heat preservation cover 12 and the lower heat preservation box 11 form a closed heating area, the gas in the combined upper heat preservation cover 12 and lower heat preservation box 11 is extracted through the vacuum equipment to form a vacuum environment, and the upper heat preservation cover 12 and the lower heat preservation box 11 are divided into left and right two spaces through the separation assembly 2, the surface of the metal pipe workpiece is heated in sections, the high-temperature gas generated by the acetylene combustion furnace 13 is introduced into the corresponding heating area of the lower heat preservation box 11 through the gas inlet port 15 on one side, the coating on the surface of the metal pipe workpiece is rapidly solidified through high temperature, the high-temperature gas produced by the high-temperature furnace 14 is introduced into the other side heating area of the lower heat preservation box 11 through the gas inlet port 15, the coating on the surface of the metal pipe workpiece is rapidly melted and decomposed through high temperature, the surface of the metal pipe workpiece is processed in sections through different temperature processing areas, and the heating treatment efficiency of the metal pipe workpiece is improved.

[0030] Low-temperature gas is introduced into the cooling pipe 16 during the heat treatment process, so that the inside of the metal pipe workpiece is kept at a low temperature, and the influence of the high-temperature environment outside on the inside of the metal pipe workpiece is reduced.

[0031] According to the needs of segmented processing of the surface of the metal pipe workpiece, the position of the separation assembly 2 in the upper heat preservation cover 12 and the lower heat preservation box 11 can be adjusted, the proportion of the segmented processing areas on both sides of the combined upper heat preservation cover 12 and lower heat preservation box 11 can be adjusted, and therefore the segmented processing of different metal pipe workpieces can be adapted.

[0032] Referring to Figures 3-6 As shown in the figure, the separation assembly 2 includes guide sliding strips 21 fixed on the inner walls of the upper heat preservation cover 12 and the lower heat preservation box 11, an upper separation heat preservation plate 22 is slidably installed on the guide sliding strip 21 in the upper heat preservation cover 12, a lower separation heat preservation plate 23 is slidably installed on the guide sliding strip 21 in the lower heat preservation box 11, a displacement air cylinder 24 is fixedly installed in the upper heat preservation cover 12, and the output end of the displacement air cylinder 24 is fixedly connected with the upper separation heat preservation plate 22; a circular groove 25 coaxial with the cooling pipe 16 is formed in each of the upper separation heat preservation plate 22 and the lower separation heat preservation plate 23.

[0033] The displacement air cylinder 24 is operated to push the upper separation heat preservation plate 22 to move transversely, the upper separation heat preservation plate 22 drives the lower separation heat preservation plate 23 to move synchronously, and the upper separation heat preservation plate 22 and the lower separation heat preservation plate 23 slide along the direction of the guide sliding strip 21 to adjust the proportion of the heating areas on the left and right sides in the upper heat preservation cover 12 and the lower heat preservation box 11.

[0034] Referring to Figure 4 and Figure 5As shown, the upper partition heat insulation plate 22 is fixed with a clamping strip 26, and the lower partition heat insulation plate 23 is provided with a clamping groove 27, the length of the clamping strip 26 is less than the length of the clamping groove 27, and the clamping strip 26 is connected with the clamping groove 27 in a clamping manner.

[0035] When the upper heat insulation cover 12 is closed above the lower heat insulation box 11, the upper partition heat insulation plate 22 in the upper heat insulation cover 12 is rotationally attached above the lower partition heat insulation plate 23, the clamping strip 26 at the bottom end of the upper partition heat insulation plate 22 is clamped into the clamping groove 27 on the lower partition heat insulation plate 23, and the clamping structure of the clamping strip 26 and the clamping groove 27 can connect the upper partition heat insulation plate 22 and the lower partition heat insulation plate 23, so that the upper partition heat insulation plate 22 can drive the lower partition heat insulation plate 23 to move synchronously when the upper partition heat insulation plate 22 moves laterally.

[0036] Referring to Figures 3-5 As shown, the upper partition heat insulation plate 22 and the lower partition heat insulation plate 23 are provided with a dispersion mechanism 3 for rotating and uniformly dispersing high-temperature gas.

[0037] The dispersion mechanism 3 rotates with the metal pipe workpiece, can rotate and disperse the high-temperature gas in the upper heat insulation cover 12 and the lower heat insulation box 11, so that the temperature in the upper heat insulation cover 12 and the lower heat insulation box 11 is uniformly distributed, and the quality of the heat-treated metal workpiece is improved.

[0038] Referring to Figures 3-5 As shown, the dispersion mechanism 3 includes an arc-shaped sliding groove 31 provided in the upper partition heat insulation plate 22 and the lower partition heat insulation plate 23, the arc-shaped sliding groove 31 penetrates the circular groove 25, a sliding bead 32 is slidingly connected in the arc-shaped sliding groove 31, an arc-shaped sliding strip 33 is installed on the sliding bead 32, two fixed frames 34 are symmetrically fixed on the arc-shaped sliding strip 33 relative to the arc-shaped sliding groove 31, and a cylindrical rod 35 is fixedly connected on the fixed frame 34.

[0039] After the upper heat insulation cover 12 and the lower heat insulation box 11 are rotated, the metal pipe workpiece is limited in the arc-shaped sliding strip 33 in the upper partition heat insulation plate 22 and the lower partition heat insulation plate 23, the arc-shaped sliding strip 33 is tightly attached to the outside of the metal pipe workpiece, and when the metal pipe workpiece rotates in the process of hot working, the arc-shaped sliding strip 33 rotates synchronously, the arc-shaped sliding strip 33 moves in the arc-shaped sliding groove 31 through the sliding of the sliding bead 32, and the arc-shaped sliding strip 33 drives the fixed frame 34 and the cylindrical rod 35 to rotate synchronously, so that the cylindrical rod 35 rotates around the outer circumference of the metal pipe workpiece, the circumferential rotation of the cylindrical rod 35 can uniformly disperse the gas in the upper heat insulation cover 12 and the lower heat insulation box 11, so that the heating temperature is uniformly distributed, and the purpose of uniformly solidifying and melting the surface coating of the metal pipe workpiece is achieved.

[0040] Referring to Figures 6-9As shown, the clamping assembly 4 comprises a hollow round seat 41 rotatably mounted in the lower heat preservation box 11 and the upper heat preservation cover 12, the hollow round seat 41 is coaxially sleeved outside the cooling pipe 16, the hollow round seat 41 is fixedly installed with a support frame 42, the support frame 42 is rotatably connected with a clamping seat 43; the support frame 42 is fixedly installed with a lifting cylinder 44, the output end of the lifting cylinder 44 is fixed with a lifting block 45, the lifting block 45 is rotatably connected with a driving rod 46, and the driving rod 46 is rotatably connected between the lifting block 45 and the clamping seat 43.

[0041] The lifting cylinder 44 is operated to control the lifting block 45 to move upwards, the driving rod 46 connected between the lifting block 45 and the clamping seat 43 rotates at both ends, the rotating driving rod 46 pushes the clamping seat 43 to rotate on the support frame 42, and the clamping seats 43 on both sides of the support frame 42 rotate towards the metal pipe workpiece, the clamping seats 43 on both sides rotate to clamp the outer wall of the metal pipe workpiece, so that the metal pipe workpiece is quickly clamped.

[0042] Referring to Figures 6-9 As shown, the lower heat preservation box 11 is rotatably connected with a power gear 411, and the power gear 411 is meshingly connected with a gear ring 412 beside the power gear 411, and the gear ring 412 is fixed outside the hollow round seat 41 in the lower heat preservation box 11.

[0043] The clamping assembly 4 in the lower heat preservation box 11 comprises the power gear 411 surrounding the gear ring 412, which is used to realize the driving function, and the power gear 411 is connected to the output end of the motor, and the motor outside the lower heat preservation box 11 is operated to control the power gear 411 to rotate, and the gear ring 412 is controlled to rotate through meshing transmission, the gear ring 412 drives the hollow round seat 41 to rotate synchronously, the hollow round seat 41 in the lower heat preservation box 11 drives the clamped metal pipe workpiece to rotate, the metal pipe workpiece drives the hollow round seat 41 in the upper heat preservation cover 12 to rotate synchronously, so that the metal pipe workpiece stably rotates in the lower heat preservation box 11 and the upper heat preservation cover 12 during heat treatment processing, and the coating heat treatment is uniform.

[0044] Working principle: control the upper heat preservation cover 12 to rotate and open, and the metal pipe workpiece is sleeved outside the cooling pipe 16, the lifting cylinder 44 is operated to control the lifting block 45 to move downwards, the lifting block 45 drives the driving rod 46 to rotate, the rotating driving rod 46 pushes the clamping seat 43 to rotate on the support frame 42, so that the clamping seat 43 rotates to clamp the outside of the metal pipe workpiece, so that the metal pipe workpiece is quickly clamped and limited, then the upper heat preservation cover 12 is rotated and closed, and the other side of the metal pipe workpiece is clamped and limited by the clamping assembly 4 in the upper heat preservation cover 12.

[0045] After closing, the upper heat preservation cover 12 and the lower heat preservation box 11, the upper partition heat preservation plate 22 in the interior is attached on the lower partition heat preservation plate 23, and the clamping strip 26 on the upper partition heat preservation plate 22 is clamped in the clamping groove 27 on the lower partition heat preservation plate 23, the running displacement cylinder 24 controls the transverse movement of the upper partition heat preservation plate 22, the upper partition heat preservation plate 22 drives the lower partition heat preservation plate 23 to move synchronously, the proportion of the left and right heating areas in the upper heat preservation cover 12 and the lower heat preservation box 11 is adjusted, so that the metal pipe workpiece surface is segmented and heated.

[0046] The coating on the surface of the solidified metal pipe workpiece is heated by the high-temperature gas introduced into one side of the lower heat preservation box 11 through the acetylene combustion furnace 13, and the coating on the surface of the metal pipe workpiece is melted and decomposed by the high-temperature gas introduced into the other side of the lower heat preservation box 11 through the high-temperature furnace 14, in the heat treatment process, the motor is operated to control the rotation of the power gear 411, the power gear 411 drives the gear ring 412 and the hollow circular seat 41 to rotate through meshing transmission, the hollow circular seat 41 drives the clamped metal pipe workpiece to rotate, so that the metal pipe workpiece is uniformly heated in the lower heat preservation box 11.

[0047] The metal pipe workpiece rotates at the same time to drive the arc-shaped sliding strip 33 to rotate synchronously, the arc-shaped sliding strip 33 drives the cylindrical rod 35 to rotate through the fixed frame 34, the cylindrical rod 35 rotates around the outer periphery of the metal pipe workpiece, uniformly disperses the gas on both sides of the lower heat preservation box 11, and further maintains the uniform heat treatment of the surface of the metal pipe workpiece.

[0048] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A sectional heating and holding device for coating vacuum remelting, comprising a lower holding box (11) and an upper holding cover (12) rotatably installed on the lower holding box (11), characterized in that: The segmented heating and holding device further comprises an acetylene combustion furnace (13) fixed on one side of the bottom end of the lower holding box (11), a high-temperature furnace (14) fixed on the other side of the bottom end of the lower holding box (11), and two gas input ports (15) installed at the bottom end of the lower holding box (11), which are respectively connected with the acetylene combustion furnace (13) and the high-temperature furnace (14); The cooling pipe (16) is fixedly installed in the lower holding box (11); The lower holding box (11) and the upper holding cover (12) are provided with a separation assembly (2) for segmented processing of the workpiece. The lower holding box (11) and the upper holding cover (12) are both provided with a clamping assembly (4) for clamping and limiting the processing position of the workpiece.

2. The sectional heating and holding device for coating vacuum remelting according to claim 1, characterized in that: The separation assembly (2) comprises guide sliding strips (21) fixed on the inner walls of the upper holding cover (12) and the lower holding box (11), an upper separation holding plate (22) slidably installed on the guide sliding strips (21) in the upper holding cover (12), a lower separation holding plate (23) slidably installed on the guide sliding strips (21) in the lower holding box (11), and a displacement air cylinder (24) fixedly installed in the upper holding cover (12), with the output end of the displacement air cylinder (24) fixedly connected with the upper separation holding plate (22). The upper separation holding plate (22) and the lower separation holding plate (23) are both provided with a circular groove (25) coaxial with the cooling pipe (16).

3. The sectional heating and soaking device for coating vacuum remelting according to claim 2, characterized in that: The upper separation holding plate (22) is fixedly provided with a clamping strip (26), and the lower separation holding plate (23) is provided with a clamping groove (27), the length of the clamping strip (26) being less than the length of the clamping groove (27), and the clamping strip (26) being connected with the clamping groove (27) in a clamping manner.

4. The sectional heating and holding device for coating vacuum remelting according to claim 2, characterized in that: The upper separation holding plate (22) and the lower separation holding plate (23) are provided with a dispersion mechanism (3) for rotating and uniformly dispersing high-temperature gas.

5. The sectional heating and soaking device for coating vacuum remelting according to claim 4, characterized in that: The dispersion mechanism (3) comprises an arc-shaped sliding groove (31) formed in the upper separation holding plate (22) and the lower separation holding plate (23), the arc-shaped sliding groove (31) being mutually penetrated with the circular groove (25), a sliding bead (32) slidably connected in the arc-shaped sliding groove (31), an arc-shaped sliding strip (33) installed on the sliding bead (32), two fixed frames (34) fixedly and symmetrically provided on the arc-shaped sliding strip (33) with respect to the arc-shaped sliding groove (31), and a cylindrical rod (35) fixedly connected with the fixed frame (34).

6. The sectional heating and soaking device for coating vacuum remelting according to claim 1, characterized in that: The clamping assembly (4) comprises a hollow circular seat (41) rotatably installed in the lower holding box (11) and the upper holding cover (12), the hollow circular seat (41) being coaxially sleeved outside the cooling pipe (16), a supporting frame (42) fixedly installed on the hollow circular seat (41), and a clamping seat (43) rotatably connected with the supporting frame (42). The supporting frame (42) is fixedly provided with a lifting air cylinder (44), the output end of the lifting air cylinder (44) is fixedly provided with a lifting block (45), the lifting block (45) is rotatably connected with a driving rod (46), and the driving rod (46) is rotatably connected with the clamping seat (43).

7. The sectional heating and soaking device for coating vacuum remelting according to claim 6, characterized in that: The lower holding box (11) is rotatably connected with a power gear (411), and a gear ring (412) is connected with the power gear (411) in a meshing manner, the gear ring (412) being fixed outside the hollow circular seat (41) in the lower holding box (11).

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