Quenching device for high-speed steel heat treatment and process method thereof

Abstract

The quenching device comprises a heating furnace body which is sequentially divided into a cooling area, a heat preservation area and a heating area from bottom to top so that high-speed steel quenching can be integrally arranged, and a furnace cover connected to the top of the heating furnace body through bolts so that the interior of the heating furnace body can be sealed and protected. The driving mechanism is connected to the center of the top of the furnace cover through bolts so as to provide power for the internal mechanism, and the heating tray is arranged on the driving mechanism and moves in the heat preservation area. Heating and quenching cooling of high-speed steel are integrated, so that the operation steps are reduced, the cost input of equipment is reduced, meanwhile, the quenching efficiency of the high-speed steel is improved, and due to the reasonable design of an internal driving mechanism, the high-speed steel does not need to wait in the quenching process; and heating and quenching cooling can be synchronously carried out on high-speed steel without mutual influence, so that continuous machining operation can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed steel applications, in particular to a quenching device for heat treatment of high-speed steel and a process method thereof. Background Art

[0002] High-speed steel is a tool steel with high hardness, high wear resistance and high heat resistance. It is widely used in mechanical processing, cutting tools and other fields. Quenching is a key process in the heat treatment of high-speed steel and plays a decisive role in the performance of high-speed steel.

[0003] At present, there are some problems with the existing high-speed steel quenching equipment and processes. For example, when high-speed steel is subjected to heating treatment and quenching cooling treatment, it is generally processed in a production line manner, which increases the floor space and increases the investment in production costs. At the same time, after heating, a sling is required for transportation operations, thereby reducing the production efficiency of the entire quenching process. Therefore, the present invention proposes a quenching equipment and process method for heat treatment of high-speed steel. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a quenching device for heat treatment of high-speed steel and a process method thereof. By integrating the heating and quenching cooling of the high-speed steel, the operating steps are reduced and the cost investment in the equipment is reduced. At the same time, the quenching efficiency of the high-speed steel is improved. The reasonable design of the internal driving mechanism makes it possible for the high-speed steel to not wait during the quenching process. The heating and quenching cooling of the high-speed steel can be carried out simultaneously without affecting each other, so that it can be processed continuously.

[0005] To solve the above technical problems, the present invention adopts a technical solution: providing a quenching device for heat treatment of high-speed steel, comprising a heating furnace body, wherein the heating furnace body is sequentially divided into a cooling zone, a heat preservation zone and a heating zone from bottom to top, so as to be provided for quenching high-speed steel in an integrated manner; The furnace cover is bolted to the top of the heating furnace to seal and protect the interior of the heating furnace; Bolted to the drive mechanism at the top center of the furnace cover to provide power to the internal mechanism; A heating tray is installed on the driving mechanism and moves inside the heat preservation zone to position the high-speed steel for heating and position transportation; A cooling tray is provided on the driving mechanism and moves inside the cooling zone to position the high-speed steel for quenching, cooling and lifting; A stirring assembly is connected to the driving mechanism and is located at the bottom of the cooling zone to stir the cooling medium in the cooling zone evenly; Multiple heating units are evenly distributed in the heating zone in the circumferential direction to heat the high-speed steel.

[0006] The present invention is further configured such that: a liquid inlet pipe and a liquid outlet pipe are respectively provided on the outer wall of the heating furnace body near the top and bottom of the cooling zone.

[0007] The above technical solution facilitates the replacement or recycling of the internal cooling medium by utilizing the liquid inlet pipe and the liquid discharge pipe.

[0008] The present invention is further configured such that: the circumferential arc surface hinge of the heat preservation zone is connected with a material taking door.

[0009] The above technical solution makes it easy to open the reclaiming door and take out the high-speed steel inside.

[0010] The present invention is further configured as follows: the driving mechanism includes a driving motor bolted to the center of the top of the furnace cover, the end face of the driving shaft of the driving motor is fixedly connected to a first reciprocating screw, the end face of the first reciprocating screw is fixedly connected to a second reciprocating screw, and the end face of the second reciprocating screw is rotatably connected to the center of the inner bottom of the heating furnace body, and the stroke of the first reciprocating screw is twice the stroke of the second reciprocating screw.

[0011] Through the above technical solution, the drive motor is started, and its output shaft drives the rotation of the first reciprocating screw and the second reciprocating screw, and the first reciprocating screw is twice the size of the second reciprocating screw, so that the quenched high-speed steel can be taken out when the heated high-speed steel is moved to half, and the heat of the heated high-speed steel will not be dissipated. At the same time, during the resetting process of the heating tray, the cooling tray realizes two groups of lifting operations, thereby cooperating with the flowing cooling medium to improve the quenching cooling effect of the high-speed steel.

[0012] The present invention is further configured as follows: the heating tray includes a nut seat threadedly connected to the outer wall of the first reciprocating screw, and the two sides of the nut seat are symmetrically rotatably connected with a receiving plate, the two ends of the two receiving plates are rotatably connected with a fixing ring, and the outer wall of the fixing ring is smoothly fitted with the inner wall of the insulation zone, the bottom bolt of the nut seat is connected to a connecting plate, the side wall of the connecting plate is rotatably connected to a cylinder, and the end face of the driving rod of the cylinder is rotatably connected to the bottom of one of the receiving plates.

[0013] Through the above technical solution, the first reciprocating screw drives the nut seat to rise and fall, so that the nut seat drives the entire heating tray to rise and fall as a whole on the second guide rail through the first slide groove.

[0014] The present invention is further configured as follows: both ends of the two receiving plates are fixedly connected with a rotating shaft, and the opposite surfaces of the two receiving plates near the middle are symmetrically fixedly connected with a gear column, the rotating shaft passes through the receiving plates and the gear column, and its two ends are respectively rotatably connected to the nut seat and the fixing ring, and the fixing ring is slidably connected to the second guide rail installed on the inner wall of the insulation area through a first sliding groove opened on its outer wall.

[0015] Through the above technical solution, when one of the receiving plates is driven, the rotating shaft rotates on the nut seat and the fixing ring, and under the action of the meshing tooth column, the two receiving plates rotate at the same time, causing the high-speed steel on the top to tilt and slide.

[0016] The present invention is further configured as follows: the cooling tray is threadedly connected to the outer wall of the second reciprocating screw, and its outer wall smoothly fits the inner wall of the cooling zone; the outer wall of the cooling tray is provided with a second slide groove, and the second slide groove is slidably connected to the first guide rail installed on the inner wall of the cooling zone; the cooling tray is provided with multiple through holes evenly distributed in the circumferential direction.

[0017] Through the above technical solution, the second reciprocating screw can drive the cooling tray to slide and lift on the first guide rail through the second slide groove, and the through hole can facilitate full contact of the cooling medium.

[0018] The present invention is further configured as follows: the stirring assembly includes a driving gear sleeved on the end face of the second reciprocating screw rod, the outer wall of the driving gear is meshedly connected with a plurality of driven gears, the plurality of driven gears are rotatably connected to the inner bottom of the heating furnace body through a positioning shaft with an interference fit on the inner wall, the tops of the plurality of positioning shafts are fixedly connected to stirring rods, and the two ends of the plurality of stirring rods are fixedly connected to stirring blades.

[0019] Through the above technical solution, the second reciprocating screw drives the rotation of the driving gear at the bottom, causing the multiple driven gears meshing around it to rotate, so that the internal positioning shaft drives the multiple stirring blades on the top stirring rod to stir the cooling medium, causing the cooling medium to flow.

[0020] The present invention is further configured as follows: a discharge door is hingedly connected to the outer wall of the heating zone, and mounting grooves are provided in the circumferential direction of the heating zone and in the middle of the discharge door; The heating unit comprises an arc-shaped plate installed inside the mounting groove, wherein side plates are symmetrically fixedly connected to the position of the arc-shaped plate away from the middle, and a plurality of electric heating elements are evenly fixedly connected to the opposite surfaces of the two side plates.

[0021] Through the above technical solution, it is easy to open the material door and put the high-speed steel into the internal heating plate; The starting electric heating element can transfer heat to the high-speed steel workpiece in the furnace through radiation, conduction and convection, so that it can heat up quickly, and the use of curved plates can fix it in the circumferential direction to improve the uniformity of heating.

[0022] On the other hand, a process method for a quenching device for heat treatment of high-speed steel is provided, comprising the following steps: S1. First, open the material door and place the high-speed steel onto the receiving plate; S2, then start multiple heating units, using the high temperature generated by multiple electric heating elements to heat the internal high-speed steel; S3. After reaching a certain temperature, the drive motor is started, and its output shaft drives the first reciprocating screw and the second reciprocating screw to rotate, so that the heating tray, the cooling tray and the stirring assembly move simultaneously: S31, the first reciprocating screw drives the nut seat to descend, so that the nut seat drives the entire heating tray to descend as a whole on the second guide rail through the first slide groove; S32, the second reciprocating screw drives the cooling tray to slide upward on the first guide rail through the second slide groove; S33, simultaneously driving the bottom driving gear to rotate, causing the multiple driven gears meshing around it to rotate, thereby causing the internal positioning shaft to drive the multiple stirring blades on the top stirring rod to stir the cooling medium, causing the cooling medium to flow; S4. When the fixed ring descends to the middle of the heat preservation zone, it pauses for a certain period of time to remove the high-speed steel on the cooling tray at the top of the cooling zone after a round trip. When it continues to descend to the bottom, the drive motor stops and the cylinder is started. Its drive rod drives the receiving plate connected to the end face to rotate on the nut seat and the fixed ring through the rotating shaft. Under the action of the meshing tooth column, the two receiving plates rotate simultaneously, causing the high-speed steel on the top to tilt and slide down. At this time, the cooling tray is at the bottom. S5. Then, the drive motor is started again, and its output shaft drives the first reciprocating screw and the second reciprocating screw to rotate, so that the heating tray rises, and the cooling tray rises accordingly to catch the high-speed steel that falls into the cooling medium. When the heating tray rises to the top of the heat preservation zone, the cooling tray has completed two sets of reciprocating lifting operations. The cooling medium stirred by the stirring assembly can quickly quench the high-speed steel. S6. Repeating steps S1-S5 can achieve continuous quenching operation on high-speed steel.

[0023] The beneficial effects of the present invention are as follows: 1. The quenching device and process method for high-speed steel heat treatment proposed in the present invention integrate the heating and quenching cooling of high-speed steel, thereby reducing the number of operating steps and the cost of equipment investment, while also improving the quenching efficiency of high-speed steel; 2. The quenching device and process method for heat treatment of high-speed steel proposed in the present invention have a reasonable design of the internal driving mechanism, so that the high-speed steel does not need to wait during the quenching process. The high-speed steel can be heated and quenched and cooled simultaneously without affecting each other, so that it can be processed continuously. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the present invention; Figure 2 It is the internal structure diagram of the present invention; Figure 3 It is a structural diagram of the heating furnace body in the present invention; Figure 4 It is a structural diagram of the driving mechanism in the present invention; Figure 5 This is an exploded view of the heating tray of the present invention; Figure 6 This is a structural diagram of the heating unit installed on the discharge door in the present invention; Figure 7 This is a structural diagram of the heating unit in the present invention.

[0025] In the figure: 1, heating furnace body; 11, cooling zone; 111, liquid inlet pipe; 112, liquid discharge pipe; 113, first guide rail; 12, holding zone; 121, material reclaiming door; 122, second guide rail; 13, heating zone; 131, material discharge door; 132, mounting slot; 2. Furnace cover; 3. Driving mechanism; 31. Driving motor; 32. First reciprocating screw; 33. Second reciprocating screw; 4. Heating tray; 41. Nut seat; 42. Socket plate; 421. Rotating shaft; 422. Gear column; 43. Fixing ring; 431. First slide groove; 44. Connecting plate; 45. Cylinder; 5. Cooling tray; 51. Second chute; 52. Through hole; 6. Stirring assembly; 61. Driving gear; 62. Driven gear; 63. Positioning shaft; 64. Stirring rod; 65. Stirring blade; 7. Heating unit; 71. Curved plate; 72. Side plate; 73. Electric heating element. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0027] like Figure 1-Figure 3As shown, a quenching device for heat treatment of high-speed steel includes a heating furnace body 1, which is divided into a cooling zone 11, a heat preservation zone 12 and a heating zone 13 from bottom to top, so as to be set up as an integrated device for quenching high-speed steel. The outer wall of the heating furnace body 1 is connected to the top and bottom of the cooling zone 11, respectively, with a liquid inlet pipe 111 and a liquid discharge pipe 112, so that the internal cooling medium can be replaced or recycled by using the liquid inlet pipe 111 and the liquid discharge pipe 112. The circumferential arc surface of the heat preservation zone 12 is hingedly connected to a material removal door 121, so that the material removal door 121 can be opened to remove the high-speed steel inside. The furnace cover 2 is bolted to the top of the heating furnace body 1 to seal and protect the interior of the heating furnace body 1.

[0028] like Figure 2 and Figure 4 As shown, the driving mechanism 3 is bolted to the center of the top of the furnace cover 2 to provide power to the internal mechanism. The driving mechanism 3 includes a driving motor 31 bolted to the center of the top of the furnace cover 2. The end face of the driving shaft of the driving motor 31 is fixedly connected to the first reciprocating screw 32, and the end face of the first reciprocating screw 32 is fixedly connected to the second reciprocating screw 33, and the end face of the second reciprocating screw 33 is rotatably connected to the center of the inner bottom of the heating furnace body 1. The stroke of the first reciprocating screw 32 is twice the stroke of the second reciprocating screw 33. When the driving motor 31 is started, its output shaft drives the rotation of the first reciprocating screw 32 and the second reciprocating screw 33. The first reciprocating screw 32 is twice the size of the second reciprocating screw 33, so that the quenched high-speed steel can be taken out when the heated high-speed steel is moved to halfway, and the heat of the heated high-speed steel will not be dissipated. At the same time, during the resetting process of the heating tray 4, the cooling tray 5 realizes two groups of lifting operations, thereby cooperating with the flowing cooling medium to improve the quenching and cooling effect of the high-speed steel.

[0029] like Figure 2 and Figure 5As shown, a heating tray 4 is provided on the driving mechanism 3 and movable inside the heat preservation zone 12 to position the heating and positionally transport the high-speed steel. The heating tray 4 includes a nut seat 41 threadedly connected to the outer wall of the first reciprocating screw 32. The two sides of the nut seat 41 are symmetrically rotatably connected with a receiving plate 42. Both ends of the two receiving plates 42 are fixedly connected with a rotating shaft 421. The opposite surfaces of the two receiving plates 42 are symmetrically fixedly connected with a tooth column 422 near the middle position. The rotating shaft 421 passes through the receiving plate 42 and the tooth column 422, and its two ends are rotatably connected to the nut seat 41 and the fixing ring 43 respectively, so that when one of the receiving plates 42 is driven, it rotates on the nut seat 41 and the fixing ring 43 through the rotating shaft 421, and the tooth column 422 engaged with the receiving plate 42 acts on the receiving plate 42. Down, the two receiving plates 42 rotate at the same time, causing the high-speed steel on the top to tilt and slide down, and the two ends of the two receiving plates 42 are rotatably connected with the fixing rings 43, and the outer wall of the fixing ring 43 is smoothly fitted with the inner wall of the insulation zone 12, and the fixing ring 43 is slidably connected to the second guide rail 122 installed on the inner wall of the insulation zone 12 through the first slide groove 431 opened on its outer wall, and the bottom bolt of the nut seat 41 is connected to the connecting plate 44, and the side wall of the connecting plate 44 is rotatably connected to the cylinder 45, and the end face of the driving rod of the cylinder 45 is rotatably connected to the bottom of one of the receiving plates 42, and the first reciprocating screw 32 drives the nut seat 41 to rise and fall, so that the nut seat 41 drives the entire heating tray 4 to rise and fall as a whole on the second guide rail 122 through the first slide groove 431.

[0030] like Figure 2 and Figure 3 As shown, a cooling tray 5 is arranged on the driving mechanism 3 and movable inside the cooling zone 11 to position, quench, cool and lift the high-speed steel. The cooling tray 5 is threadedly connected to the outer wall of the second reciprocating screw 33, and its outer wall smoothly fits the inner wall of the cooling zone 11. A second slide groove 51 is provided on the outer wall of the cooling tray 5, and the second slide groove 51 is slidably connected to the first guide rail 113 installed on the inner wall of the cooling zone 11. A plurality of through holes 52 are evenly provided in the circumferential direction of the cooling tray 5, so that the second reciprocating screw 33 can drive the cooling tray 4 to slide and lift on the first guide rail 113 through the second slide groove 51, and the through hole 52 can facilitate full contact of the cooling medium.

[0031] like Figure 4As shown, a stirring assembly 6 is connected to the driving mechanism 3 and is located at the bottom of the cooling zone 11 to uniformly stir the cooling medium inside the cooling zone 11. The stirring assembly 6 includes a driving gear 61 that is sleeved on the end face of the second reciprocating screw 33. The outer wall of the driving gear 61 is meshed with a plurality of driven gears 62. The plurality of driven gears 62 are rotatably connected to the inner bottom of the heating furnace body 1 through a positioning shaft 63 that is interference-connected with the inner wall. The tops of the plurality of positioning shafts 63 are fixedly connected with stirring rods 64. Both ends of the plurality of stirring rods 64 are fixedly connected with stirring blades 65. The second reciprocating screw 33 drives the rotation of the driving gear 61 at the bottom, so that the plurality of driven gears 62 meshed around it rotate, so that the internal positioning shaft 63 drives the plurality of stirring blades 65 on the top stirring rod 64 to stir the cooling medium, so that the cooling medium flows.

[0032] like Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, multiple heating units 7 are evenly distributed in the circumferential direction inside the heating zone 13 to heat the high-speed steel. A discharge door 131 is hingedly connected to the outer wall of the heating zone 13. Mounting grooves 132 are provided in the circumferential direction of the heating zone 13 and in the middle of the discharge door 131 to facilitate opening the discharge door 131 to place the high-speed steel onto the internal heating plate 4. The heating unit 7 includes an arc-shaped plate 71 installed inside the mounting groove 132. The arc-shaped plate 71 is symmetrically fixedly connected to the side plate 72 away from the middle position. The opposite surfaces of the two side plates 72 are evenly fixedly connected to multiple electric heating elements 73. When the electric heating elements 73 are started, heat can be transferred to the high-speed steel workpiece in the furnace through radiation, conduction and convection, so that it can be heated quickly. The arc-shaped plate 71 can be used to fix it in the circumferential direction to improve the uniformity of heating.

[0033] like Figure 1-Figure 7 As shown, a process method for a quenching device for heat treatment of high-speed steel is provided, comprising the following steps: S1. First, open the material door 131 and place the high-speed steel onto the receiving plate 42; S2, then start the multiple heating units 7, using the high temperature generated by the multiple electric heating elements 73 to heat the internal high-speed steel; S3. After reaching a certain temperature, the drive motor 31 is started, and its output shaft drives the first reciprocating screw 32 and the second reciprocating screw 33 to rotate, so that the heating tray 4, the cooling tray 5 and the stirring assembly 6 move simultaneously: S31, the first reciprocating screw 32 drives the nut seat 41 to descend, so that the nut seat 41 drives the entire heating tray 4 to descend as a whole on the second guide rail 122 through the first sliding groove 431; S32: The second reciprocating screw 33 drives the cooling tray 4 to slide upward on the first guide rail 113 through the second slide groove 51; S33, simultaneously driving the bottom driving gear 61 to rotate, causing the multiple driven gears 62 meshing around it to rotate, thereby causing the internal positioning shaft 63 to drive the multiple stirring blades 65 on the top stirring rod 64 to stir the cooling medium, causing the cooling medium to flow; S4, when the fixing ring 43 descends to the middle position of the heat preservation zone 12, it pauses for a certain period of time, and the high-speed steel on the cooling tray 5 that has risen to the top of the cooling zone 11 after the round trip is taken out, and then it continues to descend to the bottom, the driving motor 31 stops, and the cylinder 45 is started. Its driving rod drives the receiving plate 42 connected to the end face to rotate on the nut seat 41 and the fixing ring 43 through the rotating shaft 421, and under the action of the meshing tooth column 422, the two receiving plates 42 rotate simultaneously, causing the high-speed steel on the top to tilt and slide down. At this time, the cooling tray 5 is at the bottom; S5, then start the drive motor 31 again, and its output shaft drives the first reciprocating screw 32 and the second reciprocating screw 33 to rotate, the heating tray 4 rises, and the cooling tray 5 rises accordingly to catch the high-speed steel that falls into the cooling medium. When the heating tray 4 rises to the top of the insulation zone 12, the cooling tray 5 has completed two sets of reciprocating lifting operations, and the cooling medium stirred by the stirring assembly 6 can quickly quench the high-speed steel; S6. Repeating steps S1-S5 can achieve continuous quenching operation on high-speed steel.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A quenching device for heat treatment of high-speed steel, characterized by: include A heating furnace body (1), wherein the heating furnace body (1) is divided into a cooling zone (11), a heat preservation zone (12) and a heating zone (13) from bottom to top, so as to be provided for high-speed steel quenching in an integrated manner; A furnace cover (2) is bolted to the top of the heating furnace body (1) to seal and protect the interior of the heating furnace body (1); A drive mechanism (3) is bolted to the center of the top of the furnace cover (2) to provide power to the internal mechanism; A heating tray (4) is provided on the driving mechanism (3) and moves inside the heat preservation zone (12) to positionally heat and transport the high-speed steel; A cooling tray (5) disposed on the driving mechanism (3) and movable within the cooling zone (11) for positioning, quenching, cooling, and lifting the high-speed steel; A stirring assembly (6) is connected to the driving mechanism (3) and is located at the bottom of the cooling zone (11) to uniformly stir the cooling medium in the cooling zone (11); A plurality of heating units (7) are evenly distributed in the circumferential direction inside the heating zone (13) to heat the high-speed steel.

2. The quenching device for heat treatment of high-speed steel according to claim 1, characterized in that: The outer wall of the heating furnace body (1) is provided with a liquid inlet pipe (111) and a liquid outlet pipe (112) at positions adjacent to the top and bottom of the cooling zone (11).

3. The quenching device for heat treatment of high-speed steel according to claim 1, characterized in that: The circumferential arc surface of the heat preservation zone (12) is hingedly connected to a material taking door (121).

4. The quenching device for heat treatment of high-speed steel according to claim 1, characterized in that: The driving mechanism (3) includes a driving motor (31) bolted to the center of the top of the furnace cover (2), the end face of the driving shaft of the driving motor (31) is fixedly connected to a first reciprocating screw (32), the end face of the first reciprocating screw (32) is fixedly connected to a second reciprocating screw (33), and the end face of the second reciprocating screw (33) is rotatably connected to the center of the inner bottom of the heating furnace body (1), and the stroke of the first reciprocating screw (32) is twice the stroke of the second reciprocating screw (33).

5. The quenching device for heat treatment of high-speed steel according to claim 4, characterized in that: The heating tray (4) includes a nut seat (41) threadedly connected to the outer wall of the first reciprocating screw (32), and the two sides of the nut seat (41) are symmetrically connected to the receiving plates (42), and the two ends of the two receiving plates (42) are connected to the fixing rings (43) in a rotatable manner, and the outer wall of the fixing ring (43) is smoothly fitted with the inner wall of the heat preservation zone (12). The bottom of the nut seat (41) is bolted to the connecting plate (44), and the side wall of the connecting plate (44) is connected to the cylinder (45), and the end face of the driving rod of the cylinder (45) is connected to the bottom of one of the receiving plates (42).

6. The quenching device for heat treatment of high-speed steel according to claim 5, characterized in that: Both ends of the two receiving plates (42) are fixedly connected to a rotating shaft (421), and the opposite surfaces of the two receiving plates (42) are symmetrically fixedly connected to a tooth column (422) near the middle position. The rotating shaft (421) passes through the receiving plates (42) and the tooth column (422), and its two ends are rotatably connected to the nut seat (41) and the fixing ring (43), and the fixing ring (43) is slidably connected to the second guide rail (122) installed on the inner wall of the insulation zone (12) through a first sliding groove (431) provided on its outer wall.

7. The quenching device for heat treatment of high-speed steel according to claim 4, characterized in that: The cooling tray (5) is threadedly connected to the outer wall of the second reciprocating screw (33), and its outer wall smoothly fits the inner wall of the cooling zone (11). The outer wall of the cooling tray (5) is provided with a second slide groove (51), and the second slide groove (51) is slidably connected to the first guide rail (113) installed on the inner wall of the cooling zone (11). The cooling tray (5) is evenly provided with multiple through holes (52) in the circumferential direction.

8. The quenching device for heat treatment of high-speed steel according to claim 4, characterized in that: The stirring assembly (6) includes a driving gear (61) sleeved on the end face of the second reciprocating screw (33), the outer wall of the driving gear (61) is meshedly connected with a plurality of driven gears (62), the plurality of driven gears (62) are rotatably connected to the inner bottom of the heating furnace body (1) through a positioning shaft (63) with an interference fit on the inner wall, the tops of the plurality of positioning shafts (63) are fixedly connected to stirring rods (64), and the two ends of the plurality of stirring rods (64) are fixedly connected to stirring blades (65).

9. The quenching device for heat treatment of high-speed steel according to claim 1, characterized in that: The outer wall of the heating zone (13) is hingedly connected to a discharge door (131), and mounting grooves (132) are provided in the circumferential direction of the heating zone (13) and in the middle of the discharge door (131); The heating unit (7) comprises an arc-shaped plate (71) installed inside the mounting groove (132), side plates (72) are symmetrically fixedly connected to the arc-shaped plate (71) at positions away from the middle, and a plurality of electric heating elements (73) are evenly fixedly connected to opposite surfaces of the two side plates (72).

10. A process method for a quenching device for heat treatment of high-speed steel according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, open the material door (131) and place the high-speed steel onto the receiving plate (42); S2, then starting the multiple heating units (7) to heat the internal high-speed steel using the high temperature generated by the multiple electric heating elements (73); S3. After reaching a certain temperature, the driving motor (31) is started, and its output shaft drives the first reciprocating screw (32) and the second reciprocating screw (33) to rotate, so that the heating tray (4), the cooling tray (5) and the stirring assembly (6) move simultaneously: S31, the first reciprocating screw (32) drives the nut seat (41) to descend, so that the nut seat (41) drives the entire heating tray (4) to descend as a whole on the second guide rail (122) through the first slide groove (431); S32, the second reciprocating screw (33) drives the cooling tray (4) to slide upward on the first guide rail (113) through the second slide groove (51); S33, simultaneously driving the bottom driving gear (61) to rotate, causing the plurality of driven gears (62) meshing around the rotating gears to rotate, thereby causing the internal positioning shaft (63) to drive the plurality of stirring blades (65) on the top stirring rod (64) to stir the cooling medium, causing the cooling medium to flow; S4, when the fixed ring (43) descends to the middle position of the heat preservation zone (12), it pauses for a certain period of time, and the high-speed steel on the cooling tray (5) at the top of the cooling zone (11) after the round trip is taken out, and when it continues to descend to the bottom, the driving motor (31) stops, and the cylinder (45) is started, and its driving rod drives the receiving plate (42) connected to the end face to rotate on the nut seat (41) and the fixed ring (43) through the rotating shaft (421), and under the action of the meshing tooth column (422), the two receiving plates (42) rotate at the same time, so that the high-speed steel on the top tilts and slides, and the cooling tray (5) is at the bottom at this time; S5, then the driving motor (31) is started again, and its output shaft drives the first reciprocating screw (32) and the second reciprocating screw (33) to rotate, the heating tray (4) rises, and the cooling tray (5) rises accordingly to catch the high-speed steel that falls into the cooling medium. When the heating tray (4) rises to the top of the heat preservation zone (12), the cooling tray (5) has completed two sets of reciprocating lifting operations, and the cooling medium stirred by the stirring assembly (6) can quickly quench the high-speed steel; S6. Repeating steps S1-S5 can achieve continuous quenching operation on high-speed steel.

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