Low-carbon alloy steel carburizing device

Abstract

The utility model relates to the technical field of carburizing devices, and discloses a low-carbon alloy steel carburizing device which comprises a base plate, a carburizing assembly, a driving assembly and a gas homogenizing assembly. According to the low-carbon alloy steel carburizing device, by optimizing the structural design, gas distribution is more uniform, the depth and uniformity of a carburized layer are remarkably improved, when a first servo motor is started, a base and a first spiral guide plate can be driven to rotate, and therefore low-carbon alloy steel placed on the base can be driven to rotate; the surface of the low-carbon alloy steel is uniformly exposed in carburizing gas, a first spiral guide plate drives the gas to spirally flow, the contact area and time of the gas and the low-carbon alloy steel are increased, meanwhile, a second servo motor is started to enable the first spiral guide plate and a second spiral guide plate to form a convection effect, gas distribution is further optimized, and carburizing efficiency is improved. And the arranged gas conveying assembly can ensure rapid switching work of carburizing gas and inert gas, and the gas switching process is simplified.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of carburizing devices, in particular to a low-carbon alloy steel carburizing device. BACKGROUND

[0002] A gas carburizing furnace is a device for performing carburizing treatment on metal workpieces in a closed container, and can improve the surface performance of the metal workpieces. The carburizing process of the gas carburizing furnace needs to perform heating treatment and heat preservation treatment on the metal workpieces.

[0003] The existing patent (announcement number: CN218026303U) discloses a low-carbon alloy steel carburizing device, which comprises a carburizing furnace body and a pressing mechanism. The outer surface of the carburizing furnace body is connected with a blast pipe on one side, and the outer surface of the blast pipe is connected with a carbon-containing gas input pipe on one side. A flow regulating disc is arranged on the outer surface of the carbon-containing gas input pipe, and a rotating disc is rotatably arranged in the flow regulating disc. A gear is rotatably arranged in the flow regulating disc on the inner side of the rotating disc. The inner side of the rotating disc is provided with an internal gear at a position corresponding to the gear. The low-carbon alloy steel carburizing device can adjust the flow of carbon-containing gas flowing through the flow regulating disc by arranging the knob, gear and rotating disc in a corresponding aperture, so as to meet the demand of the alloy in the carburizing furnace body for carbon-containing gas, thereby ensuring the carburizing rate of the carbon-containing gas and the internal alloy.

[0004] The device in the above-mentioned comparative document has a single gas flow path during carburizing. The gas usually flows in a straight line from the bottom gas inlet to the top gas outlet. The gas is prone to form a flow dead angle in the furnace body, resulting in uneven distribution of gas on the surface of the workpiece, and thus the depth and uniformity of the carburized layer are difficult to guarantee, and problems such as local insufficient carburizing or excessive carburizing are prone to occur. In order to solve the above-mentioned problems, a low-carbon alloy steel carburizing device is provided. TECHNICAL CONTENT

[0005] In view of the deficiencies of the prior art, the application provides a low-carbon alloy steel carburizing device, which can significantly optimize the distribution of carburizing gas and thus improve the carburizing effect through a double-layer flow guide structure.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme: a low-carbon alloy steel carburizing device, comprising a base plate, a carburizing assembly, a driving assembly and a gas homogenization assembly. The carburizing assembly comprises an outer heat preservation furnace body and a heat-resistant alloy steel lining fixedly connected to the inner wall of the outer heat preservation furnace body. The inner wall of the heat-resistant alloy steel lining is provided with uniformly distributed electric heating plate modules. The top of the outer heat preservation furnace body is provided with a top cover.

[0007] The gas homogenization assembly comprises a first servo motor fixedly connected to the bottom surface of the base plate, an inner bottom wall of the carburizing assembly is rotatably sleeved with a base, an output shaft end of the first servo motor is fixedly connected to a bottom end of the base, a first spiral flow guide plate is fixedly connected to an edge of an upper surface of the base, a second servo motor is fixedly connected to an upper surface of the top cover, an output end of the second servo motor penetrates through the top cover and is fixedly connected with a connecting rod, one end of the connecting rod is fixedly connected with a second spiral flow guide plate, the second spiral flow guide plate is sleeved outside the first spiral flow guide plate, and the direction of the second spiral flow guide plate is opposite to that of the first spiral flow guide plate, and the carburizing assembly is internally provided with a gas delivery assembly.

[0008] Through the above scheme, the gas distribution is more uniform by optimizing the structure design, and the carburizing layer depth and uniformity are significantly improved. When the first servo motor is started, the base and the first spiral flow guide plate can be driven to rotate, so that the low-carbon alloy steel placed on the base can be rotated, so that the surface of the low-carbon alloy steel is uniformly exposed to the carburizing gas. The first spiral flow guide plate drives the gas to form a spiral flow, increases the contact area and time of the gas and the low-carbon alloy steel, and simultaneously starts the second servo motor to form a convection effect between the first spiral flow guide plate and the second spiral flow guide plate, further optimizing the gas distribution. The gas delivery assembly can ensure the rapid switching work of the carburizing gas and the inert gas, simplify the gas switching process, and improve the flexibility and operation convenience of the device.

[0009] Further, the bottom surface of the top cover is fixedly connected with a first sealing ring and a second sealing ring, and the first sealing ring and the second sealing ring are sleeved on the inner side of the heat-resistant alloy steel lining and the outer side of the external insulation furnace body, respectively.

[0010] Through the above scheme, the first sealing ring and the second sealing ring can improve the sealing performance of the connection between the top cover and the external insulation furnace body, thereby optimizing the carburizing effect.

[0011] Further, the driving assembly comprises two electric push rods fixedly connected to the upper surface of the base plate, and the outer surface of the top cover is fixedly connected with two connecting plates, and the output ends of the two electric push rods are fixedly connected with the bottom surfaces of the two connecting plates, respectively.

[0012] Through the above scheme, when the electric push rod is started, the top cover can be moved up and down through the connecting plate, thereby facilitating the lofting and sampling work of the low-carbon alloy steel.

[0013] Further, the gas delivery assembly comprises an air inlet pipe communicated on one side of the carburizing assembly, and a gas flow meter is installed on a pipe section of the air inlet pipe.

[0014] Through the above scheme, the gas flow meter arranged can measure the gas flow entering the external insulation furnace body through the gas inlet pipe, which is convenient to use.

[0015] Further, the input end of the gas inlet pipe is communicated with a Y-shaped communication pipe, both input ends of the Y-shaped communication pipe are fixedly connected with connecting heads.

[0016] Through the above scheme, the Y-shaped communication pipe and the connecting head arranged can be conveniently connected with the carburizing gas assembly and the inert gas assembly outside, thereby facilitating the carburizing work of the low-carbon alloy steel.

[0017] Further, the first electromagnetic valve and the one-way valve are installed on the pipe sections on both sides of the Y-shaped communication pipe, the other side of the carburizing assembly is communicated with an exhaust pipe, and the second electromagnetic valve is installed on the pipe section of the exhaust pipe.

[0018] Through the above scheme, the first electromagnetic valve and the one-way valve arranged can conveniently control the rapid switching of carburizing gas and inert gas, and the operation is convenient, and the exhaust pipe and the second electromagnetic valve arranged can conveniently exhaust the gas inside the external insulation furnace body.

[0019] Further, the carburizing assembly is fixedly connected with a total controller on the outer surface, and the electrical elements in the carburizing assembly, the driving assembly, the gas homogenization assembly and the gas conveying assembly are electrically connected with the total controller.

[0020] Through the above scheme, the total controller arranged simplifies the operation process of the device, which is more practical.

[0021] Further, the bottom pile is fixedly connected at the four corners of the bottom surface of the substrate, and the anti-skid pad is fixedly connected to the bottom surface of each bottom pile.

[0022] Through the above scheme, the bottom pile arranged can make the device more stably placed on the contact surface, so that stable carburizing work can be achieved.

[0023] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0024] The low-carbon alloy steel carburizing device, through the optimization of the structure design, makes the gas distribution more uniform, and the carburizing layer depth and uniformity are significantly improved, when the first servo motor starts, the base and the first spiral flow guide plate can be driven to rotate, so that the low-carbon alloy steel placed on the base can be rotated, so that the low-carbon alloy steel surface is uniformly exposed to the carburizing gas, the first spiral flow guide plate drives the gas to form spiral flow, increases the contact area and time of the gas and the low-carbon alloy steel, and simultaneously starting the second servo motor can form the convection effect of the first spiral flow guide plate and the second spiral flow guide plate, further optimizing the gas distribution, and the gas conveying assembly arranged can ensure the rapid switching work of the carburizing gas and the inert gas, simplifies the gas switching process, and improves the flexibility and operation convenience of the device. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the overall front view structure schematic diagram of the structure of the application;

[0026] Figure 2 It is the overall bottom view structure schematic diagram of the structure of the application;

[0027] Figure 3 It is the partial sectional view structure schematic diagram of the structure of the application;

[0028] Figure 4 It is the partial top view structure schematic diagram of the structure of the application;

[0029] Figure 5 It is the partial bottom view structure schematic diagram of the structure of the application.

[0030] In the drawings:

[0031] 1, base plate; 2, carburizing assembly; 201, outer thermal insulation furnace body; 202, heat-resistant alloy steel lining; 203, electric heating plate module; 204, top cover; 205, first sealing ring; 206, second sealing ring; 3, driving assembly; 301, electric push rod; 302, connecting plate; 4, gas homogenization assembly; 401, first servo motor; 402, base; 403, first spiral flow guide plate; 404, second servo motor; 405, connecting rod; 406, second spiral flow guide plate; 5, total controller; 6, gas conveying assembly; 601, gas inlet pipe; 602, gas flow meter; 603, Y-shaped communication pipe; 604, connecting head; 605, first electromagnetic valve; 606, one-way valve; 607, exhaust pipe; 608, second electromagnetic valve; 7, bottom pile. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0033] Please refer to Figure 1 , Figure 2 and Figure 3 A low-carbon alloy steel carburizing device in the embodiment comprises a base plate 1, a carburizing assembly 2, a driving assembly 3 and a gas homogenizing assembly 4. The carburizing assembly 2 comprises an outer insulation furnace body 201 and a heat-resistant alloy steel lining 202 fixedly connected to the inner wall of the outer insulation furnace body 201. The double-layer design can optimize the heating effect inside the outer insulation furnace body 201. The inner wall of the heat-resistant alloy steel lining 202 is provided with evenly distributed electric heating plate modules 203. When the electric heating plate modules 203 are started, the inside of the heat-resistant alloy steel lining 202 can be heated. The top of the outer insulation furnace body 201 is provided with a top cover 204. The bottom surface of the top cover 204 is fixedly connected with a first sealing ring 205 and a second sealing ring 206. The first sealing ring 205 and the second sealing ring 206 are respectively sleeved on the inner side of the heat-resistant alloy steel lining 202 and the outer side of the outer insulation furnace body 201. The first sealing ring 205 and the second sealing ring 206 can improve the sealing performance of the connection between the top cover 204 and the outer insulation furnace body 201, thereby optimizing the carburizing effect.

[0034] Please refer to Figure 3 , Figure 4 and Figure 5The gas homogenization assembly 4 comprises a first servo motor 401 fixedly connected to the bottom surface of the base plate 1, a base 402 rotatably sleeved on the inner bottom wall of the carburizing assembly 2, and the output shaft end of the first servo motor 401 is fixedly connected to the bottom end of the base 402. A first spiral flow guide plate 403 is fixedly connected to the edge of the upper surface of the base 402. The low-carbon alloy steel can be placed on the upper surface of the base 402, and the first spiral flow guide plate 403 is sleeved outside the low-carbon alloy steel but does not contact the low-carbon alloy steel. When the first servo motor 401 is started, the low-carbon alloy steel can be driven to rotate, so that it can be uniformly heated. At the same time, the base 402 will also drive the first spiral flow guide plate 403 to rotate. When the first spiral flow guide plate 403 rotates, a spiral flow is formed. The spiral flow increases the contact area and time of the gas and the low-carbon alloy steel, ensures that the gas is uniformly distributed on the surface of the workpiece, and optimizes the carburizing effect. The upper surface of the top cover 204 is fixedly connected with a second servo motor 404. The output end of the second servo motor 404 penetrates through the top cover 204 and is fixedly connected with a connecting rod 405. One end of the connecting rod 405 is fixedly connected with a second spiral flow guide plate 406. The second spiral flow guide plate 406 is sleeved outside the first spiral flow guide plate 403, and the direction of the second spiral flow guide plate 406 is opposite to that of the first spiral flow guide plate 403. In this way, when the first servo motor 401 and the second servo motor 404 are started, a convection effect can be formed between the second servo motor 404 and the second spiral flow guide plate 406. The double-layer flow guide structure can further optimize the gas flow path, avoid gas flow dead angles, and ensure more uniform gas distribution.

[0035] Please refer to Figure 2 、 Figure 3 and Figure 4 The carburizing assembly 2 is internally provided with a gas delivery assembly 6. The gas delivery assembly 6 comprises a gas inlet pipe 601 communicated to one side of the carburizing assembly 2. A gas flow meter 602 is mounted on the pipe section of the gas inlet pipe 601. The gas flow meter 602 can be used to measure the gas flow rate of the gas entering the external insulation furnace body 201 through the gas inlet pipe 601, which is convenient to use. The input end of the gas inlet pipe 601 is communicated with a Y-shaped communication pipe 603. Both input ends of the Y-shaped communication pipe 603 are fixedly connected with connecting heads 604. The Y-shaped communication pipe 603 and the connecting heads 604 can be conveniently connected with external carburizing gas assemblies and inert gas assemblies, thereby facilitating the carburizing work of the low-carbon alloy steel. First electromagnetic valves 605 and check valves 606 are mounted on the pipe sections on both sides of the Y-shaped communication pipe 603. The other side of the carburizing assembly 2 is communicated with an exhaust pipe 607. A second electromagnetic valve 608 is mounted on the pipe section of the exhaust pipe 607. The first electromagnetic valves 605 and the check valves 606 can be used to conveniently control the rapid switching of carburizing gas and inert gas, which is convenient to operate. The exhaust pipe 607 and the second electromagnetic valve 608 can be used to conveniently exhaust the gas in the external insulation furnace body 201.

[0036] Please refer to Figure 1 , Figure 2 and Figure 4 , the driving assembly 3 includes two electric push rods 301 fixedly connected to the upper surface of the base plate 1, the outer surface of the top cover 204 is fixedly connected with two connecting plates 302, the output ends of the two electric push rods 301 are fixedly connected with the bottom surfaces of the two connecting plates 302, when the electric push rod 301 is started, the top cover 204 can be driven to move up and down through the connecting plate 302, thereby facilitating the lofting and sampling work of low-carbon alloy steel, the outer surface of the carburizing assembly 2 is fixedly connected with a general controller 5, the electrical elements inside the carburizing assembly 2, the driving assembly 3, the gas homogenization assembly 4 and the gas conveying assembly 6 are electrically connected with the general controller 5, the general controller 5 simplifies the operation process of the device, which is more practical, the bottom surface of the base plate 1 is fixedly connected with four bottom stakes 7, the bottom surface of each bottom stake 7 is fixedly connected with a non-slip pad, the device can be placed more stably on the contact surface through the setting of the bottom stake 7, so as to realize stable carburizing work.

[0037] The low-carbon alloy steel carburizing device in this embodiment optimizes the design of the structure to make the gas distribution more uniform, and the carburizing layer depth and uniformity are significantly improved, when the first servo motor 401 is started, it can drive the base 402 and the first spiral guide plate 403 to rotate, which can drive the low-carbon alloy steel placed on the base 402 to rotate, so that the surface of the low-carbon alloy steel is uniformly exposed to the carburizing gas, the first spiral guide plate 403 drives the gas to form spiral flow, increases the contact area and time of the gas and the low-carbon alloy steel, and at the same time, the second servo motor 404 is started to form a convection effect between the first spiral guide plate 403 and the second spiral guide plate 406, further optimizing the gas distribution, and the gas conveying assembly 6 is set to ensure the rapid switching work of the carburizing gas and the inert gas, which simplifies the gas switching process, and improves the flexibility and operation convenience of the device.

[0038] The working principle of the above embodiment is that first, the external carburizing gas assembly and the inert gas assembly are connected with the two connecting heads 604 of the Y-shaped communication pipe 603, then the low-carbon alloy steel is placed on the base 402, at this time, the first spiral flow guide plate 403 is sleeved outside the low-carbon alloy steel, but does not contact the low-carbon alloy steel, then the two electric push rods 301 are started to drive the top cover 204 to move downward to seal the external insulation furnace body 201, when the top cover 204 moves to the appropriate position, the first sealing ring 205 and the second sealing ring 206 will be in contact with the external insulation furnace body 201 and the heat-resistant alloy steel lining 202 respectively, thereby improving the sealing effect of the connecting part, then the electric heating plate module 203 is started to heat the low-carbon alloy steel, then the carburizing gas is input into the heat-resistant alloy steel lining 202 through the Y-shaped communication pipe 603 and the gas inlet pipe 601, then the first servo motor 401 and the second servo motor 404 are started to optimize the distribution of the gas, when the first servo motor 401 is started, it can drive the base 402 and the first spiral flow guide plate 403 to rotate, when the base 402 rotates, it will drive the low-carbon alloy steel placed on its upper surface to rotate, and the rotation of the first spiral flow guide plate 403 can form spiral flow, which increases the contact area and time of the gas and the low-carbon alloy steel, ensures that the gas is evenly distributed on the surface of the workpiece, at the same time, the rotation of the second spiral flow guide plate 406 driven by the second servo motor 404 can form a convection effect, the cooperation of the second servo motor 404 and the second spiral flow guide plate 406 can further optimize the gas flow path, avoid gas flow dead angle, and ensure more uniform gas distribution, at the same time, the rotation of the base 402 drives the low-carbon alloy steel to rotate evenly, so that the surface of the low-carbon alloy steel is evenly exposed to the heating area and the carburizing gas, avoiding local overheating or insufficient heating, improving the heating uniformity, after carburizing, the carburizing gas can be stopped, then the inert gas is input through the Y-shaped communication pipe 603 and the gas inlet pipe 601 for cooling.

[0039] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without limitation, an element preceded by "comprises... a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus.

[0040] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary and that changes can be made in detail without departing from the principles and spirit of the application. The scope of the application is therefore defined by the appended claims and their equivalents.

Claims

1. A low carbon alloy steel carburizing device comprising a base plate (1), a carburizing assembly (2), a driving assembly (3) and a gas homogenizing assembly (4), characterized in that: The carburizing assembly (2) comprises an outer insulation furnace body (201) and a heat-resistant alloy steel lining (202) fixedly connected to the inner wall of the outer insulation furnace body (201), and the inner wall of the heat-resistant alloy steel lining (202) is provided with uniformly distributed electric heating plate modules (203); and the top of the outer insulation furnace body (201) is provided with a top cover (204). The gas homogenization assembly (4) comprises a first servo motor (401) fixedly connected to the bottom surface of the base plate (1), a base (402) rotatably sleeved to the inner bottom wall of the carburizing assembly (2), a first helical guide plate (403) fixedly connected to the edge of the upper surface of the base (402), a second servo motor (404) fixedly connected to the upper surface of the top cover (204), a connecting rod (405) penetrating through the top cover (204) and fixedly connected to the output end of the second servo motor (404), a second helical guide plate (406) fixedly connected to one end of the connecting rod (405), and the second helical guide plate (406) is sleeved outside the first helical guide plate (403) and has an opposite direction to the first helical guide plate (403); and the carburizing assembly (2) is internally provided with a gas delivery assembly (6).

2. The low carbon alloy steel carburizing apparatus of claim 1, wherein: The bottom surface of the top cover (204) is fixedly connected with a first sealing ring (205) and a second sealing ring (206), and the first sealing ring (205) and the second sealing ring (206) are sleeved to the inner side of the heat-resistant alloy steel lining (202) and the outer side of the outer insulation furnace body (201), respectively.

3. The low carbon alloy steel carburizing apparatus of claim 1, wherein: The driving assembly (3) comprises two electric push rods (301) fixedly connected to the upper surface of the base plate (1), and the outer surface of the top cover (204) is fixedly connected with two connecting plates (302), and the output ends of the two electric push rods (301) are fixedly connected to the bottom surfaces of the two connecting plates (302), respectively.

4. The low carbon alloy steel carburizing apparatus of claim 1, wherein: The gas delivery assembly (6) comprises an air inlet pipe (601) communicated to one side of the carburizing assembly (2), and a gas flow meter (602) is mounted on the pipe section of the air inlet pipe (601).

5. A low carbon alloy steel carburizing apparatus as claimed in claim 4, wherein: The input end of the air inlet pipe (601) is communicated with a Y-shaped communication pipe (603), and the two input ends of the Y-shaped communication pipe (603) are fixedly connected with connecting heads (604).

6. A low carbon alloy steel carburizing apparatus as claimed in claim 5, wherein: First electromagnetic valves (605) and one-way valves (606) are mounted on the pipe sections on both sides of the Y-shaped communication pipe (603), and an air outlet pipe (607) is communicated to the other side of the carburizing assembly (2), and a second electromagnetic valve (608) is mounted on the pipe section of the air outlet pipe (607).

7. The low carbon alloy steel carburizing apparatus of claim 1, wherein: A general controller (5) is fixedly connected to the outer surface of the carburizing assembly (2), and the electrical elements in the carburizing assembly (2), the driving assembly (3), the gas homogenization assembly (4) and the gas delivery assembly (6) are electrically connected with the general controller (5).

8. The low carbon alloy steel carburizing apparatus of claim 1, wherein: Bottom stakes (7) are fixedly connected to the four corners of the bottom surface of the base plate (1), and anti-skid pads are fixedly connected to the bottom surfaces of the bottom stakes (7).

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