Tempering device for heat treatment of die steel

Abstract

The utility model discloses a die steel heat treatment tempering device which comprises a base frame, at least one unit of horizontal heat treatment furnace is arranged at the upper end of the base frame, the interior of the horizontal heat treatment furnace is divided into a plurality of tempering cabins in the length direction of the horizontal heat treatment furnace, a heat collection cabin is arranged above the tempering cabins, and an air outlet window is arranged between the heat collection cabin and the tempering cabins. A plurality of trapezoidal supporting piers which are randomly distributed are distributed at the bottom of the tempering cabin, hot air flow which is pressurized and fed into the heat collecting cabin can be compressed and dispersed, and is uniformly sprayed to the upper part of the die steel in the tempering cabin from top to bottom through an air outlet window and a turbulent flow net, and meanwhile, under the guide of circulating air flow, the hot air flow is uniformly sprayed to the lower part of the die steel. And hot air passes through the narrow channels on the periphery of the tempering cabin and effectively contacts and heats the peripheral side of the die steel, and then the hot air is sucked to the bottom, fully contacts with the bottom surface of the die steel under turbulent flow and space compression of the trapezoidal supporting piers, and is converged and discharged through a central point, so that the surface of a workpiece is fully and uniformly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of die steel preparation and processing, in particular to a die steel heat treatment and tempering device. Background Art

[0002] Die steel is used to manufacture molds such as cold stamping dies, hot forging dies, and die-casting dies. The quality and service life of die steel are primarily influenced by the mold material and heat treatment, also known as tempering. Heat treatment, also known as tempering, is crucial to industrial production. Die steel's performance and service life typically must meet the high strength and wear resistance requirements of the mold during operation.

[0003] In existing technology, mold steel heat treatment typically involves placing the steel directly into a furnace, spraying heated hot air horizontally onto the steel, then collecting it through circulating air and reheating it. However, due to the relatively large furnace space, the energy from the horizontally blown hot air is difficult to evenly distribute across the mold steel surface. This results in uneven heating of the workpiece, inconsistent quality after heat treatment, and variations in hardness and wear resistance across different areas of the product. Therefore, it is necessary to design a dedicated mold steel heat treatment and tempering device to address these issues. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the utility model to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0005] Therefore, the purpose of the present invention is to provide a mold steel heat treatment and tempering device to solve the problems of the mold steel heat treatment and tempering device in the prior art proposed in the above background technology, such as uneven heating of the workpiece, unstable quality after heat treatment, and differences in hardness and wear resistance in different areas of the product.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a die steel heat treatment and tempering device, comprising a base frame, wherein at least one horizontal heat treatment furnace is provided on the upper end of the base frame, wherein the interior of the horizontal heat treatment furnace is divided into a plurality of tempering chambers along its length direction, wherein a heat collecting chamber is provided above the tempering chamber, wherein an air outlet window is provided between the heat collecting chamber and the tempering chamber, wherein a plurality of randomly distributed trapezoidal support piers are provided at the bottom of the tempering chamber, and an air exhaust hole is provided at the center of the bottom of the tempering chamber;

[0007] The circulating heating component connects the exhaust hole and the heat collecting chamber through a pipeline, and realizes hot air circulation through suction and heating.

[0008] As a preferred solution of the mold steel heat treatment and tempering device described in the utility model, the height of the trapezoidal support pier and the heat collecting cabin is between cm and cm, and the top surface area of ​​the trapezoidal support pier is less than or equal to mm 2 A spoiler net is also provided on the inner side of the air outlet window.

[0009] As a preferred solution of a mold steel heat treatment and tempering device described in the utility model, the circulating heating component includes exhaust pipes respectively connected to the exhaust holes at the bottom of the horizontal heat treatment furnace, return air pipes respectively connected to the heat collecting chambers on the upper part of the horizontal heat treatment furnace and one end connected to the exhaust pipe, and a fan and a heater arranged in series on the return air pipe.

[0010] As a preferred solution of the heat treatment and tempering device for mold steel described in the utility model, a master control unit, namely a controller, of the heat treatment and tempering device is further provided on one side of the base frame.

[0011] As a preferred solution of the mold steel heat treatment and tempering device described in the utility model, the front side of the horizontal heat treatment furnace is further provided with a plurality of door panels corresponding to each tempering chamber.

[0012] As a preferred solution of the mold steel heat treatment and tempering device described in the utility model, a plurality of supporting legs are further provided at the bottom of the base frame, and a plurality of avoidance holes corresponding to the various exhaust holes are further provided on the base frame.

[0013] Compared with the prior art, the beneficial effect of the present invention is that: during the tempering heat treatment, the hot air flow that is pressurized and sent into the heat collection chamber will be compressed and dispersed, and will be evenly sprayed from top to bottom to the upper part of the mold steel in the tempering chamber through the air outlet window and the spoiler net. At the same time, under the guidance of the circulating airflow, the hot air will pass through the narrow passages around the tempering chamber and form effective contact and heating on the surrounding side of the mold steel. The hot air is then sucked to the bottom and forms full contact with the bottom surface of the mold steel under the turbulence and spatial compression of the trapezoidal support pier, and is converged and discharged through the center point, so that the surface of the workpiece is fully and evenly heated. Compared with the traditional tempering furnace heat treatment, it is easier to control the quality of product heat treatment and ensure the specification performance of the mold steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall external structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the tempering chamber of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the circulating heating component of the utility model.

[0017] In the figure: 100, base frame; 110, supporting legs; 200, horizontal heat treatment furnace; 210, tempering chamber; 220, heat collecting chamber; 230, air outlet window; 240, trapezoidal supporting pier; 250, exhaust hole; 260, spoiler net; 270, door panel; 300, circulating heating component; 310, exhaust pipe; 320, return air pipe; 330, fan; 340, heater; 400, controller. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0019] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing the embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0021] Figure 1-Figure 3 Shown is a schematic diagram of the entire structure of a die steel heat treatment and tempering device of the utility model, please refer to Figure 1-Figure 3 , a mold steel heat treatment and tempering device in this embodiment includes a base frame 100, a horizontal heat treatment furnace 200 of at least one unit is arranged on the upper end of the base frame 100, the interior of the horizontal heat treatment furnace 200 is divided into multiple tempering chambers 210 along its length direction, a heat collecting chamber 220 is provided above the tempering chamber 210, an air outlet window 230 is provided between the heat collecting chamber 220 and the tempering chamber 210, a plurality of randomly distributed trapezoidal support piers 240 are arranged at the bottom of the tempering chamber 210, and an exhaust hole 250 is provided in the center of the bottom of the tempering chamber 210; a circulating heating component 300 connects the exhaust hole 250 and the heat collecting chamber 220 through a pipeline, and realizes hot air circulation through suction and heating.

[0022] The height of the trapezoidal support pier 240 and the heat collecting chamber 220 is between 3cm and 5cm, and the top surface area of ​​the trapezoidal support pier 240 is less than or equal to 8mm. 2, a spoiler net 260 is also provided inside the air outlet window 230. It can be understood that the trapezoidal support pier 240 is used to set up the mold steel, so that there is a relatively thin and flat space distance between the mold steel and the bottom of the tempering chamber 210. Similarly, the height of the heat collecting chamber 220 is compressed, so that the input hot air flow can be more evenly sprayed into the tempering chamber 210 through the air outlet window 230 and the spoiler net 260; specifically, during the tempering heat treatment, the hot air flow pressurized into the heat collecting chamber 220 will be compressed and dispersed, and evenly sprayed from top to bottom to the tempering chamber 210 through the air outlet window 230 and the spoiler net 260. At the upper part of the mold steel in the firing chamber 210, at the same time, under the guidance of the circulating airflow, the hot air will pass through the narrow passages around the tempering chamber 210 and effectively contact and heat the surrounding sides of the mold steel. The hot air is then sucked to the bottom and fully contacts the bottom surface of the mold steel under the turbulence and spatial compression of the trapezoidal support pier 240, and is converged and discharged through the center point, so that the surface of the workpiece is fully and evenly heated. Compared with traditional tempering furnace heat treatment, it is easier to control the quality of product heat treatment, ensuring the specifications and performance of the mold steel.

[0023] The circulating heating assembly 300 includes an exhaust pipe 310 connected to each exhaust hole 250 at the bottom of the horizontal heat treatment furnace 200; a return air pipe 320 connected to each heat collection chamber 220 at the top of the horizontal heat treatment furnace 200 and connected to the exhaust pipe 310 at one end; and a fan 330 and a heater 340 connected in series to the return air pipe 320. A controller 400, the master control unit of the heat treatment and tempering device, is also located on one side of the base frame 100. It is understood that temperature sensors should be installed within the return air pipe 320 or the horizontal heat treatment furnace 200. The controller 400 controls the output power of the heater 340 and the operation of the fan 330 based on temperature fluctuations within the furnace. This allows for simultaneous heat circulation and temperature control of all tempering chambers 210, resulting in a simple and effective solution.

[0024] Furthermore, the front of the horizontal heat treatment furnace 200 is further provided with a plurality of door panels 270 corresponding to the respective tempering chambers 210. By opening and closing the door panels 270, the mold steel can be conveniently placed in and taken out of the tempering chamber 210.

[0025] Furthermore, the base frame 100 is provided with a plurality of support legs 110 at the bottom, and a plurality of avoidance holes corresponding to the exhaust holes 250 are provided on the base frame 100. The base frame 100, in conjunction with the support legs 110, can be used to elevate the horizontal heat treatment furnace 200, and the installation height can be set according to needs, making the device more convenient to use.

[0026] In summary, in a mold steel heat treatment and tempering device according to the present embodiment, during the tempering heat treatment, the hot air flow that is pressurized and sent into the heat collecting chamber 220 will be compressed and dispersed, and will be evenly sprayed from top to bottom to the upper part of the mold steel in the tempering chamber 210 through the air outlet window 230 and the spoiler net 260. At the same time, under the guidance of the circulating airflow, the hot air will pass through the narrow passages around the tempering chamber 210 and form effective contact and heating on the surrounding side of the mold steel. The hot air is then sucked to the bottom and forms full contact with the bottom surface of the mold steel under the turbulence and spatial compression of the trapezoidal support pier 240, and is converged and discharged through the center point, so that the surface of the workpiece is fully and evenly heated. Compared with the traditional tempering furnace heat treatment, it is easier to control the quality of product heat treatment.

[0027] While the present invention has been described above with reference to specific embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, as long as no structural conflicts exist, the various features of the embodiments disclosed herein may be combined with one another in any manner, and the omission of an exhaustive description of these combinations in this specification is solely for the sake of space and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A die steel heat treatment and tempering device, characterized in that: The invention comprises a base frame (100), wherein at least one unit of a horizontal heat treatment furnace (200) is provided at the upper end of the base frame (100), wherein the interior of the horizontal heat treatment furnace (200) is divided into a plurality of tempering chambers (210) along its length direction, wherein a heat collecting chamber (220) is provided above the tempering chamber (210), wherein an air outlet window (230) is provided between the heat collecting chamber (220) and the tempering chamber (210), wherein a plurality of randomly distributed trapezoidal support piers (240) are arranged at the bottom of the tempering chamber (210), and wherein an air exhaust hole (250) is provided at the center of the bottom of the tempering chamber (210); The circulating heating component (300) connects the exhaust hole (250) and the heat collecting chamber (220) through a pipeline, and realizes hot air circulation through suction and heating.

2. The die steel heat treatment and tempering device according to claim 1, characterized in that: The height of the trapezoidal support pier (240) and the heat collecting chamber (220) is between 3 cm and 5 cm, and the top surface area of ​​the trapezoidal support pier (240) is less than or equal to 8 mm. 2 A spoiler net (260) is also provided on the inner side of the air outlet window (230).

3. The die steel heat treatment and tempering device according to claim 1, characterized in that: The circulating heating assembly (300) comprises an exhaust pipe (310) respectively connected to each exhaust hole (250) at the bottom of the horizontal heat treatment furnace (200), an air return pipe (320) respectively connected to each heat collecting chamber (220) at the top of the horizontal heat treatment furnace (200) and one end of which is connected to the exhaust pipe (310), and a fan (330) and a heater (340) arranged in series on the air return pipe (320).

4. The die steel heat treatment and tempering device according to claim 1, characterized in that: A general control unit of the heat treatment and tempering device, i.e., a controller (400), is also provided on one side of the base frame (100).

5. The die steel heat treatment and tempering device according to claim 1, characterized in that: The front of the horizontal heat treatment furnace (200) is further provided with a plurality of door panels (270) corresponding to the tempering chambers (210).

6. The die steel heat treatment and tempering device according to claim 1, characterized in that: The bottom of the base frame (100) is further provided with a plurality of supporting legs (110), and the base frame (100) is further provided with a plurality of avoidance holes corresponding to the respective air extraction holes (250).

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