Hard alloy extrusion blank drying equipment and drying method

Abstract

The invention discloses hard alloy extrusion blank drying equipment and a drying method, and belongs to the technical field of hard alloy machining. The hard alloy extrusion billet drying equipment comprises a microwave oven, a bearing assembly and a temperature control assembly, the hard alloy extrusion billets are heated through the microwave oven, the multiple hard alloy extrusion billets located at different positions can be evenly heated through the penetrability of microwaves, and in addition, the temperature control assembly can control the temperature of the hard alloy extrusion billets. And different positions of any hard alloy extrusion blank can be uniformly heated, so that volatile components in the multiple hard alloy extrusion blanks can be synchronously volatilized. Energy of microwave heating can directly act on the interior of the hard alloy extrusion blank, energy loss in the heat conduction and heat radiation process can be reduced, the heat treatment period can be shortened, and the production efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of cemented carbide processing, and in particular to a cemented carbide extrusion billet drying device and a drying method. Background Art

[0002] With the development of technology, the requirements for cutting tools are getting higher and higher. At present, in order to ensure the performance of cutting tools, cemented carbide is usually used as the material for cutting tools. Cemented carbide is an alloy material made of hard compounds of refractory metals and bonding metals through powder metallurgy. It has high hardness, strength and wear resistance.

[0003] In the production process of cemented carbide, the forming method of cemented carbide includes extrusion process, which refers to feeding the mixed raw materials into the material cavity of the extrusion press and extruding the mixed raw materials from the extrusion nozzle into a cemented carbide extrusion blank of a specific shape and size. Since the cemented carbide extrusion blank contains a large amount of forming agent used to assist in forming, it is necessary to pre-remove the forming agent from the cemented carbide extrusion blank obtained by extrusion forming to remove the volatile components in the cemented carbide extrusion blank, so as to facilitate the subsequent pre-sintering and sintering processes. At present, hot air drying or hot water bath drying is usually used to dry the cemented carbide extrusion blank.

[0004] However, the removal amount of volatile components at different positions of the cemented carbide extrusion blank treated by the above-mentioned drying method varies greatly, resulting in poor drying effect of the cemented carbide extrusion blank. Summary of the invention

[0005] The embodiment of the present application provides a cemented carbide extrusion blank drying device and drying method. It can solve the problem that the amount of volatile components removed at different positions of the cemented carbide extrusion blank in the prior art is quite different, resulting in poor drying effect of the cemented carbide extrusion blank. The technical solution is as follows:

[0006] According to one aspect of the present application, a cemented carbide extrusion blank drying device is provided, and the cemented carbide extrusion blank drying device comprises:

[0007] A microwave heating furnace, wherein the microwave heating furnace has a containing chamber;

[0008] A bearing assembly, the bearing assembly is located in the containing chamber of the microwave heating furnace and is used for bearing the cemented carbide extruded billet;

[0009] A temperature control component is installed on the microwave heating oven and is used to detect the temperature in the accommodating chamber of the microwave heating oven, and when the temperature in the accommodating chamber of the microwave heating oven reaches a preset temperature, adjust the power of the microwave heating oven or turn off the microwave heating oven.

[0010] Optionally, the cemented carbide extrusion billet drying equipment further includes a heating component and an air supply component;

[0011] The microwave heating oven has an air inlet and an air outlet, the air inlet and the air outlet are both connected to the accommodating chamber of the microwave heating oven, and the air supply component is connected to the air inlet;

[0012] The heating component and the air supply component are both electrically connected to the temperature control component, and the heating component is used to heat the airflow provided by the air supply component according to the temperature of the accommodating chamber of the microwave heating furnace detected by the temperature control component.

[0013] Optionally, the cemented carbide extrusion billet drying device further comprises an electrically connected air extraction component and a pressure detection component;

[0014] The pressure detection component is installed on the microwave heating furnace and is used to detect the pressure in the containing chamber of the microwave heating furnace. The air extraction component is connected to the air outlet of the microwave heating furnace.

[0015] Optionally, the cemented carbide extrusion billet drying equipment further comprises a weighing component;

[0016] The weighing assembly is installed on the side of the bearing assembly close to the ground, and is used to detect the volatile weight of the cemented carbide extruded billet on the bearing assembly. When the volatile weight of the cemented carbide extruded billet on the bearing assembly reaches a preset weight, the power of the microwave heating furnace is adjusted or the microwave heating furnace is turned on, or at least one of the microwave heating furnace, the heating assembly and the air supply assembly is turned off.

[0017] Optionally, the weighing assembly includes a plurality of weighing units, the bearing assembly includes a bearing bracket and a plurality of bearing plates, and the plurality of bearing plates are located on the bearing bracket;

[0018] The multiple weighing units correspond to the multiple bearing plates one by one, and the weighing units are located on a side of the corresponding bearing plate close to the ground.

[0019] Optionally, the carrying plate is used to carry a plurality of cemented carbide extrusion blanks, and the carrying plate has a plurality of carrying grooves, and the carrying grooves have two opposite end openings;

[0020] The multiple cemented carbide extrusion blanks correspond one by one to the multiple bearing grooves. The cemented carbide extrusion blanks are located on the side of the corresponding bearing groove facing away from the ground. The cemented carbide extrusion blanks abut against the groove openings of the bearing grooves and have a gap between them and the groove bottoms of the bearing grooves.

[0021] Optionally, a plurality of through holes are formed at the bottom of the bearing groove, and the plurality of through holes are evenly distributed along the length direction of the bearing groove.

[0022] Optionally, the cemented carbide extrusion blank drying equipment further comprises an alarm unit, which is electrically connected to the weighing component and is used to issue an alarm according to the weight of the cemented carbide extrusion blank detected by the weighing component.

[0023] Optionally, the alarm unit includes at least one of a sound alarm component, a photoelectric alarm component and a remote alarm component;

[0024] The sound alarm component and the photoelectric alarm component are both located outside the microwave heating furnace, or the microwave heating furnace has a light-transmitting furnace door, and the photoelectric alarm component is located on the bearing component;

[0025] The remote alarm component is located in the monitoring room.

[0026] According to another aspect of the present application, a method for drying a cemented carbide extrusion blank is provided. The method for drying a cemented carbide extrusion blank is a method for drying a cemented carbide extrusion blank using the above-mentioned cemented carbide extrusion blank drying device, and the method comprises:

[0027] placing a cemented carbide extrusion blank on the bearing assembly;

[0028] Moving the bearing assembly carrying the cemented carbide extruded billet into the containing chamber of the microwave heating furnace;

[0029] Turning on the microwave heating oven;

[0030] The temperature control component monitors the temperature in the accommodating chamber of the microwave heating oven, and when the temperature in the accommodating chamber of the microwave heating oven reaches a preset temperature, adjusts the power of the microwave heating oven or turns off the microwave heating oven.

[0031] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0032] The embodiment of the present application provides a cemented carbide extrusion blank drying device including a microwave heating furnace, a bearing component and a temperature control component. The cemented carbide extrusion blank is heated by the microwave heating furnace. The penetration of microwaves can be used to make multiple cemented carbide extrusion blanks located at different positions be evenly heated, and different positions of any cemented carbide extrusion blank can be evenly heated, so that the volatile components in multiple cemented carbide extrusion blanks can be volatilized synchronously. The energy of microwave heating can directly act on the inside of the cemented carbide extrusion blank, which can reduce the energy loss in the process of heat conduction and heat radiation, shorten the heat treatment cycle, and improve production efficiency. In addition, the temperature control component is used to accurately control the temperature of the drying process of the cemented carbide extrusion blank, which can ensure the stability and consistency of the drying process and improve the quality of the product formed by the dried cemented carbide extrusion blank. It can solve the problem that the difference in the amount of volatile components removed at different positions of the cemented carbide extrusion blank in the related art is large, resulting in poor drying effect of the cemented carbide extrusion blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 It is a structural schematic diagram of a cemented carbide extrusion billet drying device provided in an embodiment of the present application;

[0035] Figure 2 It is a structural schematic diagram of another cemented carbide extrusion billet drying device provided in an embodiment of the present application;

[0036] Figure 3 It is a structural schematic diagram of a load-bearing component and a weighing component provided in an embodiment of the present application;

[0037] Figure 4 yes Figure 3 A schematic structural diagram of the load-bearing assembly and the weighing assembly from another perspective;

[0038] Figure 5 It is a structural schematic diagram of a carrier plate and a plurality of cemented carbide extrusion blanks located on the carrier plate provided in an embodiment of the present application;

[0039] Figure 6 It is a structural schematic diagram of a bearing plate and a plurality of cemented carbide extrusion blanks located on the bearing plate in the related art;

[0040] Figure 7 yes Figure 6A schematic structural diagram of the carrier plate and the cemented carbide extruded billet from another perspective;

[0041] Figure 8 It is a structural schematic diagram of a bearing slot provided in an embodiment of the present application;

[0042] Fig. 9 is a structural schematic diagram of another bearing assembly provided in an embodiment of the present application;

[0043] Fig.10 yes Fig. 9 A structural schematic diagram of the load-bearing assembly from another perspective is shown;

[0044] Fig.11 It is a flow chart of a method for drying a cemented carbide extrusion blank provided in an embodiment of the present application;

[0045] Fig.12 It is a flow chart of a method for drying cemented carbide extrusion billets provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0047] Although the present application can be easily presented as embodiments of different forms, only some of the specific embodiments are shown in the drawings and described in detail in this specification. It should be understood that this description should be regarded as an exemplary description of the principles of the present application and is not intended to limit the present application to that described herein.

[0048] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the application, rather than implying that each embodiment of the application must have the described features. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used for other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0049] In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of various elements of the present application are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indications of these directions also change accordingly.

[0050] Cemented carbide is an alloy material made by sintering refractory metal carbides with iron group metals as binders using powder metallurgy. Refractory metal carbides can include WC, TiC, TaC, NbC, Cr3C2, etc., and iron group metals can include Co, Ni and Fe. Cemented carbide combines the characteristics of high hardness refractory metal carbides and good ductility of binder metals. It has high hardness, strength and wear resistance and is widely used in the preparation of various cutting tools.

[0051] In the process of processing cemented carbide from powder into alloy, the forming method of cemented carbide includes extrusion process, which refers to feeding the mixed raw materials into the material cavity of the extrusion press, and extruding the mixed raw materials from the extrusion nozzle into a cemented carbide extrusion blank of a specific shape and size. Since the cemented carbide extrusion blank contains a large amount of forming agent used to assist in forming, it is necessary to pre-remove the forming agent from the cemented carbide extrusion blank obtained by extrusion forming, so as to remove the volatile components in the cemented carbide extrusion blank, so as to facilitate the subsequent pre-sintering and sintering processes. At present, the cemented carbide extrusion blank is usually dried by hot air drying or hot water water bath drying, that is, the drying is carried out by sending hot air into the furnace body, or the water bath drying is carried out by injecting hot water into the furnace body.

[0052] However, the cemented carbide extruded billet processed by the above-mentioned drying method has the following problems:

[0053] (1) The amount of volatile components removed at different positions of the cemented carbide extrusion billet varies greatly, resulting in poor drying effect of the cemented carbide extrusion billet, such as uneven removal of the molding agent from the upper and lower surfaces and the front and rear ends of the extrusion billet.

[0054] (2) The amount of forming agent removed from multiple cemented carbide extrusion billets located at different positions in the furnace body is inconsistent. For example, the amount of forming agent removed from the cemented carbide extrusion billet located in the middle of the furnace body is greater than the amount of forming agent removed from the cemented carbide extrusion billet located at the corners of the furnace body.

[0055] (3) During the drying process, it is impossible to monitor the amount of forming agent removed from the cemented carbide extrusion blank in real time.

[0056] The above problems may lead to uneven composition between cemented carbide products and between different parts of a single piece after the subsequent sintering process, resulting in poor performance of the cemented carbide products and affecting the service life of the cemented carbide products.

[0057] Part or all of the above technical problems can be optimized through the limited embodiments described below in this application.

[0058] Please refer to Figure 1 , Figure 1It is a structural schematic diagram of a cemented carbide extrusion billet drying device 10 provided in an embodiment of the present application. The cemented carbide extrusion billet drying device 10 may include: a microwave heating furnace 11, a bearing component 12 and a temperature control component 13.

[0059] The microwave heating furnace 11 has a containing chamber. The microwave heating furnace 11 converts electrical energy into microwave energy, and uses microwaves to penetrate the object in the containing chamber, causing the polar molecules in the object to oscillate rapidly. This oscillation generates frictional heat between molecules, which can heat the object quickly and evenly. Since microwave heating is carried out simultaneously inside and outside, the object can be heated evenly and quickly.

[0060] The bearing assembly 12 can be located in the accommodating chamber of the microwave heating furnace 11, and is used to carry the cemented carbide extrusion blank. A plurality of extruded cemented carbide extrusion blanks can be placed on the bearing assembly 12, and the bearing assembly 12 can be moved into the accommodating chamber of the microwave heating furnace 11 to heat the cemented carbide extrusion blanks by microwaves. In the process of heating the cemented carbide extrusion blanks, the penetration of microwaves can be utilized so that a plurality of cemented carbide extrusion blanks at different positions can be uniformly heated, and different positions of any cemented carbide extrusion blank can be uniformly heated, so that the volatile components (such as the forming agent) in the plurality of cemented carbide extrusion blanks can be volatilized synchronously.

[0061] Moreover, the energy of microwave heating can directly act on the inside of the cemented carbide extruded billet, reducing the energy loss in the process of heat conduction and heat radiation. This efficient heating method helps to shorten the heat treatment cycle and improve production efficiency. Therefore, compared with the drying method in the related art, the microwave heating method in the embodiment of the present application has higher energy utilization and lower energy consumption.

[0062] The temperature control component 13 can be installed on the microwave heating furnace 11, and is used to detect the temperature in the accommodating chamber of the microwave heating furnace 11, and when the temperature in the accommodating chamber of the microwave heating furnace 11 reaches a preset temperature, the power of the microwave heating furnace 11 is adjusted or the microwave heating furnace 11 is turned off. The preset temperature can be at least one temperature value set by the operator according to the type, specification and on-site temperature of the cemented carbide extrusion blank. The temperature control component 13 can measure the temperature of the accommodating chamber of the microwave heating furnace 11 in real time or at a preset time point to obtain the temperature in the accommodating chamber of the microwave heating furnace 11. Since microwave heating is instantaneous, when the temperature in the accommodating chamber of the microwave heating furnace 11 reaches the required temperature, the heating can be stopped quickly or the power of the microwave heating furnace 11 can be adjusted, so that overheating can be avoided, and the organizational structure and performance of the cemented carbide extrusion blank can be protected from damage. In addition, by accurately controlling the temperature of the drying process of the cemented carbide extrusion blank, the stability and consistency of the drying process can be ensured, and the quality of the product formed by the dried cemented carbide extrusion blank can be improved.

[0063] Exemplarily, the preset temperature can have multiple temperature values, for example, the preset temperature includes a first preset temperature value and a second preset temperature value, and the second preset temperature value is greater than the first temperature preset value. In the process of using the cemented carbide extrusion billet drying device 10 to dry the cemented carbide extrusion billet, when the temperature control component 13 detects that the temperature in the receiving chamber of the microwave heating furnace 11 is greater than or equal to the first preset temperature value, the microwave heating furnace 11 can be turned off, and after a preset time, that is, after the cemented carbide extrusion billet in the receiving chamber of the microwave heating furnace 11 is in the receiving chamber with a temperature of the first preset temperature for a preset time, the microwave heating furnace 11 is turned on again, so that the temperature in the receiving chamber of the microwave heating furnace 11 rises, and when the temperature control component 13 detects that the temperature in the receiving chamber of the microwave heating furnace 11 is greater than or equal to the second preset temperature value, the microwave heating furnace 11 is turned off again.

[0064] In this way, the temperature control component 13 monitors the temperature in the containing chamber of the microwave heating furnace 11 in real time, and can accurately control the drying temperature of the cemented carbide extruded billet in different drying stages, thereby ensuring the stability and consistency of the drying process and improving the quality of the product formed by the dried cemented carbide extruded billet.

[0065] In summary, the embodiment of the present application provides a cemented carbide extrusion blank drying device 10 including a microwave heating furnace 11, a bearing assembly 12 and a temperature control assembly 13. The cemented carbide extrusion blank is heated by the microwave heating furnace 11, and the penetration of microwaves can be used to make multiple cemented carbide extrusion blanks located at different positions uniformly heated, and different positions of any cemented carbide extrusion blank can be uniformly heated, so that the volatile components in multiple cemented carbide extrusion blanks can be volatilized synchronously. The energy of microwave heating can directly act on the inside of the cemented carbide extrusion blank, which can reduce the energy loss in the process of heat conduction and heat radiation, shorten the heat treatment cycle, and improve production efficiency. In addition, the temperature control assembly 13 is used to accurately control the temperature of the drying process of the cemented carbide extrusion blank, which can ensure the stability and consistency of the drying process and improve the quality of the product formed by the dried cemented carbide extrusion blank. It can solve the problem that the difference in the amount of volatile components removed at different positions of the cemented carbide extrusion blank in the related art is large, resulting in poor drying effect of the cemented carbide extrusion blank.

[0066] Please refer to Figure 1In an optional embodiment, the cemented carbide extrusion billet drying device 10 may further include a heating component 14 and an air supply component 15. The microwave heating furnace 11 has an air inlet and an air outlet, both of which are connected to the accommodating chamber of the microwave heating furnace 11, and the air supply component 15 is connected to the air inlet; the heating component 14 and the air supply component 15 are both electrically connected to the temperature control component 13, and the heating component 14 is used to heat the airflow provided by the air supply component 15 according to the temperature of the accommodating chamber of the microwave heating furnace 11 detected by the temperature control component 13.

[0067] The cemented carbide extrusion blank drying device 10 can be switched between a heating state, a heat preservation state and a closed state. For example, in the process of using the cemented carbide extrusion blank drying device 10 to dry the cemented carbide extrusion blank, the microwave heating furnace 11 can be turned on to uniformly heat the cemented carbide extrusion blank in the receiving chamber with microwaves, and at this time, the cemented carbide extrusion blank drying device 10 is in a heating state; when the temperature control component 13 detects that the temperature in the receiving chamber of the microwave heating furnace 11 is greater than or equal to the preset temperature, the microwave heating furnace 11 can be turned off, and the heating component 14 and the air supply component 15 can be turned on to inject a hot air flow of a preset temperature into the receiving chamber of the microwave heating furnace 11 through the air supply component 15 and the heating component 14, and at this time, the cemented carbide extrusion blank drying device 10 is in a heating state.

[0068] Among them, injecting a hot air flow of preset temperature into the containing chamber of the microwave heating furnace 11 through the air supply component 15 and the heating component 14 can have the following two effects: on the one hand, by injecting gas from the external environment into the containing chamber of the microwave heating furnace 11 to replace the volatile components such as the molding agent volatilized in the containing chamber, the concentration of volatile components in the air of the containing chamber is reduced, and the volatilization rate of the volatile components in the cemented carbide extruded billet is increased; on the other hand, the temperature of the gas output by the air supply component 15 and the heating component 14 to the containing chamber of the microwave heating furnace 11 can be consistent with the temperature in the containing chamber of the microwave heating furnace 11, so as to ensure that the temperature in the containing chamber of the microwave heating furnace 11 remains constant and avoid heat loss during the gas exchange process.

[0069] In an exemplary embodiment, the heating assembly 14 may include a gas heater, the air supply assembly 15 may include a hair dryer, and the gas heater may be located between the hair dryer and the air inlet of the microwave heating oven 11. An exhaust pipe may be provided outside the air outlet of the microwave heating oven 11.

[0070] Please refer to Figure 2 , Figure 21 is a structural schematic diagram of another cemented carbide extrusion billet drying device 10 provided in an embodiment of the present application. In an optional embodiment, the cemented carbide extrusion billet drying device 10 may also include an electrically connected exhaust component 16 and a pressure detection component; the pressure detection component is installed on the microwave heating furnace 11, and is used to detect the pressure in the accommodating chamber of the microwave heating furnace 11, and the exhaust component 16 is connected to the air outlet of the microwave heating furnace 11. The gas in the accommodating chamber of the microwave heating furnace 11 can be extracted by the exhaust component 16, so that the accommodating chamber of the microwave heating furnace 11 is in a slightly negative pressure state, thereby ensuring that the gas volatilized during the heating process of the cemented carbide extrusion billet by the microwave heating furnace 11 can be discharged out of the furnace. The pressure detection component can timely adjust the power of the exhaust component 16 according to the detected pressure in the accommodating chamber of the microwave heating furnace 11, so that the pressure in the accommodating chamber of the microwave heating furnace 11 is maintained at a preset pressure. Exemplarily, the preset pressure may range from -5 kpa to -10 kpa. Exemplarily, the preset pressure is -5 kpa, -6 kpa, -7 kpa, -9 kpa or -10 kpa.

[0071] Please refer to Figure 3 and Figure 4 , Figure 3 is a structural schematic diagram of a bearing assembly 12 and a weighing assembly 17 provided in an embodiment of the present application. Figure 4 yes Figure 3The structural schematic diagram of the bearing assembly 12 and the weighing assembly 17 from another perspective, in an optional embodiment, the cemented carbide extrusion blank drying device 10 may also include a weighing assembly 17; the weighing assembly 17 is installed on the side of the bearing assembly 12 close to the ground, and is used to detect the volatile weight of the cemented carbide extrusion blank p1 on the bearing assembly 12, and when the volatile weight of the cemented carbide extrusion blank p1 on the bearing assembly 12 reaches a preset weight, the power of the microwave heating furnace 11 is adjusted or the microwave heating furnace 11 is turned on, or at least one of the microwave heating furnace 11, the heating assembly 14 and the air supply assembly 15 is turned off. During the drying process, the amount of molding agent removed from the cemented carbide extrusion blank p1 can be monitored in real time by the weighing assembly 17. In the process of using the cemented carbide extrusion blank drying device 10 to dry the cemented carbide extrusion blank p1, the cemented carbide extrusion blank p1 can be heated and dried multiple times in stages, and the stability of the cemented carbide extrusion blank p1 during the drying process can be maintained. After heating and drying in each stage, the weighing detection component can be used to monitor whether the volatile weight of the cemented carbide extrusion blank p1 in the current stage reaches the process setting value. After monitoring that the volatile weight of the cemented carbide extrusion blank p1 in this stage reaches the process setting value, the microwave heating furnace 11 can be triggered to open, and the heating component 14 and the air supply component 15 can be turned off, so that the cemented carbide extrusion blank drying device 10 is converted from the heat preservation state to the heating state, thereby performing the next stage of drying on the cemented carbide extrusion blank p1. After monitoring that the volatile weight of the cemented carbide extrusion blank p1 in this stage reaches the final process setting value, the heating component 14 and the air supply component 15 can be triggered to close, so that the cemented carbide extrusion blank drying device 10 is converted from the heat preservation state to the closed state, and the drying of the cemented carbide extrusion blank p1 is completed.

[0072] Please refer to Figure 4 In an optional embodiment, the weighing assembly 17 may include a plurality of weighing units 171, the bearing assembly 12 may include a bearing bracket 121 and a plurality of bearing plates 122, and the plurality of bearing plates 122 are located on the bearing bracket 121; the plurality of weighing units 171 correspond to the plurality of bearing plates 122 one by one, and the weighing units 171 are located on the side of the corresponding bearing plate 122 close to the ground. Each bearing plate 122 may carry a plurality of cemented carbide extrusion blanks p1, and by detecting the volatilization weight of the cemented carbide extrusion blanks p1 on each bearing plate 122, the detection accuracy may be improved. The material of the bearing plate 122 may include graphite.

[0073] Please refer to Figure 3 , Figure 4 and Figure 5 , Figure 5It is a structural schematic diagram of a carrier plate 122 and a plurality of cemented carbide extrusion blanks p1 located on the carrier plate 122 provided in an embodiment of the present application. In an optional embodiment, the carrier plate 122 can be used to carry a plurality of cemented carbide extrusion blanks p1. The carrier plate 122 has a plurality of bearing grooves c1, and the bearing grooves c1 have two opposite end openings. The plurality of cemented carbide extrusion blanks p1 correspond to the plurality of bearing grooves c1 one by one. The cemented carbide extrusion blanks p1 are located on the side of the corresponding bearing grooves c1 away from the ground. The cemented carbide extrusion blanks p1 abut against the groove opening of the bearing grooves c1, and there is a gap between the cemented carbide extrusion blanks p1 and the groove bottom of the bearing grooves c1. In this way, the air volume at the bottom of the cemented carbide extrusion blanks p1 can be increased, and the volatilization uniformity and volatilization efficiency of the molding agent at different positions of the cemented carbide extrusion blanks p1 can be effectively improved.

[0074] In an exemplary embodiment, the groove wall and the groove bottom of the bearing groove c1 can both be arc-shaped surfaces, and the groove wall and the groove bottom can both be recessed in a direction away from the corresponding cemented carbide extrusion blank p1 to increase the space between the cemented carbide extrusion blank p1 and the bearing groove c1, thereby increasing the air volume at the bottom of the cemented carbide extrusion blank p1.

[0075] For example, the cemented carbide extrusion blank p1 may be cylindrical, and the groove wall and groove bottom of the bearing groove c1 form a cylindrical groove, and the diameter of the bearing groove c1 may be the same as or similar to the diameter of the cemented carbide extrusion blank p1.

[0076] The notch of the bearing groove c1 may be an arc-shaped surface, and the arc-shaped surface may contact the surface of the cemented carbide extrusion blank p1 to avoid stress concentration at the contact position between the cemented carbide extrusion blank p1 and the notch of the bearing groove c1.

[0077] Please refer to Figure 6 and Figure 7 , Figure 6 It is a structural schematic diagram of a carrier plate b1 and a plurality of cemented carbide extrusion blanks p1 located on the carrier plate b1 in the related art. Figure 7 yes Figure 6 The structural diagram of the carrier plate b1 and the cemented carbide extruded billet from another perspective is shown. Figure 6 and Figure 7 It can be seen that the cemented carbide extrusion blank p1 in the related art contacts the groove wall of the bearing groove c2 on the bearing plate b1, and the contact area is large, so that the molding agent on the side of the cemented carbide extrusion blank p1 close to the bearing plate b1 is difficult to volatilize to the outside, thereby causing uneven removal of the molding agent on the upper and lower surfaces of the cemented carbide extrusion blank p1. Compared with the bearing plate b1 in the related art, the notch of the bearing plate 122 in the embodiment of the present application is smaller to reduce the contact area between the bearing plate 122 and the cemented carbide extrusion blank p1, while increasing the ventilation volume at the bottom of the cemented carbide extrusion blank p1, which can improve the volatilization uniformity at different positions of the cemented carbide extrusion blank p1.

[0078] Please refer to Figure 8 , Figure 8 is a schematic diagram of the structure of a load-bearing slot c1 provided in an embodiment of the present application. In an optional implementation manner, Figure 8 The bearing groove c1 shown is a top view of the bearing groove c1, and a plurality of through holes k1 are formed at the bottom of the bearing groove c1, and the plurality of through holes k1 are evenly distributed along the length direction of the bearing groove c1. In this way, the fluidity of the gas at the bottom of the cemented carbide extrusion blank can be improved to improve the volatilization efficiency of the cemented carbide extrusion blank.

[0079] Please refer to Figure 1 , Figure 3 and Figure 4 In an optional embodiment, the cemented carbide extrusion blank drying device 10 may further include an alarm unit 18, which is electrically connected to the weighing component 17 and is used to issue an alarm according to the weight of the cemented carbide extrusion blank detected by the weighing component 17. When the weighing component 17 detects that the volatile weight of the cemented carbide extrusion blank reaches a preset value, a weight detection signal may be sent to the alarm unit 18, and the alarm unit 18 may issue an alarm to remind the operator to pay attention to the current drying condition of the cemented carbide extrusion blank.

[0080] In an optional embodiment, the alarm unit 18 may include at least one of a sound alarm component, a photoelectric alarm component and a remote alarm component; the sound alarm component and the photoelectric alarm component are both located outside the microwave heating furnace 11, or the microwave heating furnace 11 has a light-transmitting furnace door, and the photoelectric alarm component is located on the supporting component 12; the remote alarm component is located in the monitoring room.

[0081] Exemplarily, the sound alarm component may include a buzzer. The photoelectric alarm component may include an LED lamp. The remote alarm component may include a display, and the monitoring room may be a monitoring room where the operator is located. When the alarm information is displayed on the display, the staff can timely understand the drying condition of the cemented carbide extrusion billet on site to make corresponding treatment methods.

[0082] For example, when the drying result of the cemented carbide extrusion blank on each carrier plate 122 in the entire carrier assembly 12 meets the process requirements, the alarm unit 18 will give an alarm prompt. And the weighing assembly 17 can also be electrically connected to the display, so that the operator can observe the status of each carrier assembly 12 and the cemented carbide extrusion blank on each carrier plate 122.

[0083] Please refer to Fig. 9 and Fig.10 , Fig. 9 is a structural schematic diagram of another bearing assembly 12 provided in an embodiment of the present application. Fig.10 yes Fig. 9A structural schematic diagram of the support component 12 from another perspective is shown. In an optional embodiment, the support component 12 may also include an automated guided vehicle 123 (AGV). The automated guided vehicle 123 may be located on the side of the support bracket 121 close to the ground. The automated guided vehicle 123 may transport the support bracket 121 and the support plate 122 and the cemented carbide extruded billet located on the support bracket 121 to a designated location (e.g., in the accommodating chamber of the microwave heating furnace 11).

[0084] In an optional embodiment, the cemented carbide extrusion blank drying device 10 may also include a controller, which includes a programmable logic controller for controlling the cemented carbide extrusion blank drying process, and a touch screen for human-computer interaction, so that the operator can set relevant parameters. The controller can be connected to the microwave heating furnace 11, the temperature control component 13, the heating component 14, the air supply component 15, the exhaust component 16, the pressure detection component, the weighing component 17 and the alarm unit 18 by wire or wireless connection. The temperature control component 13 may include a temperature sensor and a first comparator, and the weighing unit 171 may include a weighing sensor and a second comparator. The first comparator and the second comparator can be integrated in the controller.

[0085] In an optional embodiment, the cemented carbide extrusion billet drying device 10 may further include: a timing component; the timing component is electrically connected to at least one of the microwave heating furnace 11, the temperature control component 13, the heating component 14, the air supply component 15, the exhaust component 16, the pressure detection component, the weighing component 17 and the alarm unit 18, and the timing component is used to record the number of times at least one of the timing components is turned on and the running time. The timing component can be integrated in the controller, and the controller can automatically and repeatedly perform the drying process according to the set parameters, and record the duration and number of times, so that the operator can organize the data.

[0086] In summary, the embodiment of the present application provides a cemented carbide extrusion blank drying device 10 including a microwave heating furnace 11, a bearing assembly 12 and a temperature control assembly 13. The cemented carbide extrusion blank is heated by the microwave heating furnace 11, and the penetration of microwaves can be used to make multiple cemented carbide extrusion blanks located at different positions uniformly heated, and different positions of any cemented carbide extrusion blank can be uniformly heated, so that the volatile components in multiple cemented carbide extrusion blanks can be volatilized synchronously. The energy of microwave heating can directly act on the inside of the cemented carbide extrusion blank, which can reduce the energy loss in the process of heat conduction and heat radiation, shorten the heat treatment cycle, and improve production efficiency. In addition, the temperature control assembly 13 is used to accurately control the temperature of the drying process of the cemented carbide extrusion blank, which can ensure the stability and consistency of the drying process and improve the quality of the product formed by the dried cemented carbide extrusion blank. It can solve the problem that the difference in the amount of volatile components removed at different positions of the cemented carbide extrusion blank in the related art is large, resulting in poor drying effect of the cemented carbide extrusion blank.

[0087] Please refer to Fig.11 , Fig.11 1 is a flow chart of a method for drying a cemented carbide extrusion blank provided in an embodiment of the present application. The method for drying a cemented carbide extrusion blank is a method for drying a cemented carbide extrusion blank using the multi-end cemented carbide extrusion blank drying device 10 in any of the above embodiments. The method may include the following steps:

[0088] Step 301 : placing the cemented carbide extruded blank on the bearing assembly 12 .

[0089] Step 302 : Move the carrying assembly 12 carrying the cemented carbide extruded billet into the containing chamber of the microwave heating furnace 11 .

[0090] Step 303, start the microwave heating oven 11.

[0091] Step 304 , the temperature control component 13 monitors the temperature in the accommodating chamber of the microwave heating oven 11 , and when the temperature in the accommodating chamber of the microwave heating oven 11 reaches a preset temperature, adjusts the power of the microwave heating oven 11 or turns off the microwave heating oven 11 .

[0092] Please refer to Fig.12 , Fig.12 1 is a flow chart of a method for drying a cemented carbide extrusion blank provided in an embodiment of the present application. The method for drying a cemented carbide extrusion blank is a method for drying a cemented carbide extrusion blank using the multi-end cemented carbide extrusion blank drying device 10 in any of the above embodiments. The method may include the following steps:

[0093] Step 401 : placing the cemented carbide extruded blank on the bearing assembly 12 .

[0094] The cemented carbide extrusion blank can be formed by a plunger extruder and can be in the shape of a round bar with a diameter of 25 mm. A plurality of cemented carbide extrusion blanks are placed on the carrier plate 122, and the plurality of carrier plates 122 are placed on the carrier bracket 121. At this time, the initial weight of the plurality of cemented carbide extrusion blanks on each carrier plate 122 displayed on the weighing unit 171 is W. t0 .

[0095] Step 402 : Move the carrying assembly 12 carrying the cemented carbide extruded billet into the containing chamber of the microwave heating furnace 11 by means of the automatic guided transport vehicle 123 .

[0096] Under the transport of the AGV, the carrier assembly 12 enters the microwave heating furnace 11 and enters a state to be dried.

[0097] Step 403 , start the air extraction component 16 .

[0098] The microwave heating furnace 11 is evacuated through the exhaust assembly 16 so that the air pressure in the accommodating chamber of the microwave heating furnace 11 is between -5 kPa and -10 kPa.

[0099] Step 404 , start the microwave heating oven 11 .

[0100] The microwave heating furnace 11 starts to heat the cemented carbide extruded billet according to the set process.

[0101] Step 405 , turn on the heating component 14 and the air supply component 15 .

[0102] The temperature of the heating assembly 14 may be consistent with the temperature in the accommodating chamber of the microwave heating oven 11. Step 404 and step 405 may be performed simultaneously.

[0103] Step 406: The temperature control component 13 monitors the temperature in the accommodating chamber of the microwave heating oven 11, and when the temperature in the accommodating chamber of the microwave heating oven 11 reaches a first preset temperature, the power of the microwave heating oven 11 is reduced or the microwave heating oven 11 is turned off.

[0104] The cemented carbide extrusion billet drying device 10 is kept in a heat-insulating state.

[0105] Step 407 , the weighing component 17 monitors the volatilization weight of the cemented carbide extruded billet on the carrying component 12 , and when the volatilization weight of the cemented carbide extruded billet on the carrying component 12 reaches a first preset weight, the power of the microwave heating furnace 11 is increased or the microwave heating furnace 11 is turned on.

[0106] The preset temperature may include multiple preset temperature values, the preset weight may include multiple preset weight values, the multiple preset temperature values ​​and the multiple preset weight values ​​may correspond one to one, for example, the first preset temperature and the first preset weight may correspond, when each weighing unit 171 in the weighing assembly 17 monitors that the current volatilization weight reaches the first preset weight W t1 Otherwise, the temperature is kept constant at the first preset temperature until the first preset weight W is reached. t1 .

[0107] Step 408: The temperature control component 13 monitors the temperature in the accommodating chamber of the microwave heating oven 11, and when the temperature in the accommodating chamber of the microwave heating oven 11 reaches a second preset temperature, the power of the microwave heating oven 11 is reduced or the microwave heating oven 11 is turned off.

[0108] The cemented carbide extrusion blank is heated again to increase the temperature of the cemented carbide extrusion blank so that the temperature of the cemented carbide extrusion blank reaches a second preset temperature.

[0109] Step 409, the weighing component 17 monitors the volatilization weight of the cemented carbide extrusion blank on the bearing component 12, and when the volatilization weight of the cemented carbide extrusion blank on the bearing component 12 reaches a second preset weight, the heating component 14 and the air supply component 15 are turned off.

[0110] The second preset weight may be the target drying weight to be achieved in the drying process. When each weighing unit 171 in the weighing assembly 17 detects that the current volatile weight has reached the second preset weight W, ts When the hard alloy extrusion blank is heated or kept warm, the alarm unit 18 sends an alarm signal, and the AGV transfers the bearing assembly 12 to the next process to wait for subsequent processing.

[0111] It should be noted that, in the actual drying process, the operator can repeatedly perform steps 406 to 407 according to the actual situation until the volatilization weight of the cemented carbide extrusion blank reaches the target weight, and then stop operating the cemented carbide extrusion blank drying equipment 10.

[0112] Exemplarily, the drying data of the cemented carbide extrusion blank is recorded as shown in Table 1 below. In the above embodiment, the cemented carbide extrusion blank with a diameter of 25 mm can be dried within 1 day.

[0113] Table 1. Process parameters of the examples

[0114] Temperature, °C Time, min Pressure, kpa RT-40 20 -5 40 10 -5 40-50 15 -5 50 10 -5 50-60 15 -5 60 20 -5 60-70 15 -5 70 20 -5 70-80 15 -5 80 25 -5 Room temperature /

[0115] In summary, the embodiment of the present application provides a method for drying cemented carbide extrusion blanks. By heating the cemented carbide extrusion blanks through a microwave heating furnace 11, the penetration of microwaves can be utilized so that multiple cemented carbide extrusion blanks located at different positions can be evenly heated, and different positions of any cemented carbide extrusion blank can be evenly heated, so that the volatile components in multiple cemented carbide extrusion blanks can be volatilized synchronously. The energy of microwave heating can directly act on the inside of the cemented carbide extrusion blank, which can reduce the energy loss during heat conduction and heat radiation, shorten the heat treatment cycle, and improve production efficiency. In addition, by accurately controlling the temperature of the drying process of the cemented carbide extrusion blank through the temperature control component 13, the stability and consistency of the drying process can be ensured, and the quality of the product formed by the dried cemented carbide extrusion blank can be improved. It can solve the problem in the related art that the amount of volatile components removed at different positions of the cemented carbide extrusion blank is large, resulting in poor drying effect of the cemented carbide extrusion blank.

[0116] An embodiment of the present application provides a computer storage medium, in which at least one instruction, at least one program, code set or instruction set is stored, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement any of the cemented carbide extrusion billet drying methods as described above.

[0117] According to another aspect of the present application, a computer program product or computer program is provided, the computer program product or computer program comprising computer instructions, the computer instructions being stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method for drying a cemented carbide extruded billet in any of the above-mentioned embodiments.

[0118] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0119] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0120] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cemented carbide extrusion billet drying device, characterized in that: include: A microwave heating furnace, wherein the microwave heating furnace has a containing chamber; A bearing assembly, the bearing assembly is located in the containing chamber of the microwave heating furnace and is used for bearing the cemented carbide extruded billet; A temperature control component is installed on the microwave heating oven and is used to detect the temperature in the accommodating chamber of the microwave heating oven, and when the temperature in the accommodating chamber of the microwave heating oven reaches a preset temperature, adjust the power of the microwave heating oven or turn off the microwave heating oven.

2. The cemented carbide extrusion billet drying equipment according to claim 1, characterized in that: The cemented carbide extrusion billet drying equipment also includes a heating component and an air supply component; The microwave heating oven has an air inlet and an air outlet, the air inlet and the air outlet are both connected to the accommodating chamber of the microwave heating oven, and the air supply component is connected to the air inlet; The heating component and the air supply component are both electrically connected to the temperature control component, and the heating component is used to heat the airflow provided by the air supply component according to the temperature of the accommodating chamber of the microwave heating furnace detected by the temperature control component.

3. The cemented carbide extrusion billet drying equipment according to claim 2, characterized in that: The cemented carbide extrusion billet drying equipment also includes an electrically connected air extraction component and a pressure detection component; The pressure detection component is installed on the microwave heating furnace and is used to detect the pressure in the containing chamber of the microwave heating furnace. The air extraction component is connected to the air outlet of the microwave heating furnace.

4. The cemented carbide extrusion billet drying equipment according to claim 2, characterized in that: The cemented carbide extrusion billet drying equipment also includes a weighing component; The weighing assembly is installed on the side of the bearing assembly close to the ground, and is used to detect the volatile weight of the cemented carbide extruded billet on the bearing assembly. When the volatile weight of the cemented carbide extruded billet on the bearing assembly reaches a preset weight, the power of the microwave heating furnace is adjusted or the microwave heating furnace is turned on, or at least one of the microwave heating furnace, the heating assembly and the air supply assembly is turned off.

5. The cemented carbide extrusion billet drying device according to claim 4, characterized in that: The weighing assembly includes a plurality of weighing units, and the bearing assembly includes a bearing bracket and a plurality of bearing plates, wherein the plurality of bearing plates are located on the bearing bracket; The multiple weighing units correspond to the multiple bearing plates one by one, and the weighing units are located on a side of the corresponding bearing plate close to the ground.

6. The cemented carbide extrusion billet drying device according to claim 4, characterized in that: The bearing plate is used to bear a plurality of cemented carbide extrusion blanks, and the bearing plate is provided with a plurality of bearing grooves, and the bearing grooves have two opposite end openings; The multiple cemented carbide extrusion blanks correspond one by one to the multiple bearing grooves. The cemented carbide extrusion blanks are located on the side of the corresponding bearing groove facing away from the ground. The cemented carbide extrusion blanks abut against the groove openings of the bearing grooves and have a gap between them and the groove bottoms of the bearing grooves.

7. The cemented carbide extrusion billet drying device according to claim 6, characterized in that: A plurality of through holes are formed at the bottom of the bearing groove, and the plurality of through holes are evenly distributed along the length direction of the bearing groove.

8. The cemented carbide extrusion billet drying device according to claim 4, characterized in that: The cemented carbide extrusion blank drying equipment further comprises an alarm unit, which is electrically connected to the weighing assembly and is used to issue an alarm according to the weight of the cemented carbide extrusion blank detected by the weighing assembly.

9. The cemented carbide extrusion billet drying device according to claim 8, characterized in that: The alarm unit includes at least one of a sound alarm component, a photoelectric alarm component and a remote alarm component; The sound alarm component and the photoelectric alarm component are both located outside the microwave heating furnace, or the microwave heating furnace has a light-transmitting furnace door, and the photoelectric alarm component is located on the bearing component; The remote alarm component is located in the monitoring room.

10. A method for drying cemented carbide extrusion blanks, characterized in that: The method for drying cemented carbide extrusion blanks is a method for drying cemented carbide extrusion blanks using the cemented carbide extrusion blank drying device according to any one of claims 1 to 9, and the method comprises: placing a cemented carbide extrusion blank on the bearing assembly; Moving the bearing assembly carrying the cemented carbide extruded billet into the containing chamber of the microwave heating furnace; Turning on the microwave heating oven; The temperature control component monitors the temperature in the accommodating chamber of the microwave heating oven, and when the temperature in the accommodating chamber of the microwave heating oven reaches a preset temperature, adjusts the power of the microwave heating oven or turns off the microwave heating oven.

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