Multi-element synergistic heat treatment strengthening equipment and process for improving wear resistance of alloy carbon steel teeth

Abstract

The invention relates to the technical field of gear heat treatment, in particular to multi-element synergetic heat treatment strengthening equipment and process for improving the wear resistance of alloy carbon steel teeth, the multi-element synergetic heat treatment strengthening equipment comprises a heat treatment assembly, the heat treatment assembly comprises a furnace body and a heating cavity, and a fixing assembly and an air supply assembly are arranged in the heating cavity; the fixing assembly comprises a rotating structure, a transmission structure and a plurality of placing structures. The air supply assembly comprises an air inlet pipe, a purging pipe and a linkage structure. According to the equipment, the fixing assemblies are arranged, and tooth blanks are fixed at intervals during heat treatment, so that co-permeation dead angles caused by mutual approaching of the tooth blanks are avoided, and co-permeation quality is prevented from being affected; by arranging the gas supply assembly, when co-permeation gas is introduced, the co-permeation gas directly purges the tooth surface so as to ensure that the tooth valley of the tooth surface can be in full contact with the co-permeation gas, meanwhile, the co-permeation gas can drive the fixing assembly to rotate, and then it is ensured that the tooth surface of the tooth blank can be in uniform co-permeation gas contact so as to ensure co-permeation uniformity.

Description

Technical Field

[0001] The present invention belongs to the technical field of gear heat treatment, and specifically relates to a multi-component collaborative heat treatment strengthening device and process for improving the wear resistance of alloy carbon steel gear teeth. Background Art

[0002] Alloy carbon steel gear teeth are a type of gear commonly used in scenarios with high heavy load and wear resistance requirements. Therefore, it is necessary to further process them during production to improve wear resistance. Usually, multi-component gas co-permeation is used to improve wear resistance, such as carbonitriding, sulfur-nitriding, and five-element co-permeation, etc.

[0003] For example, the invention application with the publication number CN119824180A in the field of quenching and tempering technology discloses a quenching and tempering integrated device and its production process for the production of wind power gear steel, including a base frame, a feeding module, a handling module, a heating furnace, a quenching tank, a tempering furnace, a gas transmission part, and a storage and insulation module. The base frame includes a rail frame, and a frame is fixedly connected to the upper side of the rail frame. A guide rail is provided inside the frame. The feeding module is arranged at the left end of the rail frame. The feeding module includes a feeding part partially located inside the rail frame. The feeding part includes a bottom plate, and support rods are fixedly connected to the four corners of the upper side of the bottom plate. Side plates are fixedly connected to the upper sides of the left and right support rods.

[0004] Combined with the above case and the actual situation, we found the following problems: When heat-treating gears, the gears are directly placed on a placement rack or hung with hooks, and then the co-permeation gas is introduced, and co-permeation is carried out through the diffusion of the gas. However, the tooth surfaces of the gears are uneven, and it is usually difficult for the tooth valleys to directly contact the co-permeation gas, resulting in uneven co-permeation on the tooth surface and affecting the co-permeation quality. Summary of the Invention

[0005] The purpose of the present invention is to provide a multi-component collaborative heat treatment strengthening device and process for improving the wear resistance of alloy carbon steel gear teeth, so as to solve the problem that in the prior art, the tooth surfaces of gears are uneven, and it is usually difficult for the tooth valleys to directly contact the co-permeation gas, resulting in uneven co-permeation on the tooth surface and affecting the co-permeation quality.

[0006] To achieve the above purpose, the present invention provides a multi-component collaborative heat treatment strengthening device for improving the wear resistance of alloy carbon steel gear teeth, including a heat treatment component. The heat treatment component includes a furnace body and a heating chamber, and a fixing component and a gas supply component are arranged in the heating chamber; In this setting, the alloy carbon steel gear teeth are fixed by setting a fixing component, and the multi-component co-permeation gas fed in is directly blown over the tooth surface by setting a gas supply component, avoiding the situation that the tooth valleys cannot fully contact the multi-component co-permeation gas. At the same time, it can drive the fixing component to rotate slowly, so that the tooth surface contacts the multi-component co-permeation gas evenly, thereby improving the co-permeation treatment effect; The fixing component includes a rotating structure, a transmission structure, and a number of placing structures; The rotating structure includes an outer rod and a sliding rod; an air cavity is provided at the rear end inside the outer rod, a driven gear is fixed to the outer wall of the outer rod near the front end, and a push rod is fixed to the rod wall of the sliding rod near the rear end; In this setting, when the gas inside the air cavity expands due to heat, it will push the sliding rod forward and drive the push rod to move forward; The transmission structure includes a rotating rod and a rotating plate; the rotating rod is arranged at the rear end inside the outer rod, the rear end of the rotating rod is coaxially fixed to the rotating plate, a spiral block is fixed to the front side of the rotating plate, the rear end of the sliding rod extends into the rotating rod and the two are slidably connected, and a spiral groove is provided inside the rotating rod; In this setting, when the push rod moves forward, it will give a forward thrust to the spiral groove and drive the rotating rod to rotate, thereby driving the rotating plate to rotate synchronously; The placing structure includes a clamping jaw and a number of blocks regularly distributed along the clamping jaw; In this setting, when the rotating plate drives the spiral block to rotate, it will drive the clamping jaw to move radially outward to clamp and fix the inner hole wall of the alloy carbon steel teeth; The air supply component includes an intake pipe, a purging pipe, and a linkage structure; The linkage structure includes a sleeve, a number of fan blades, and a driving gear; the sleeve is rotatably connected to the outside of the purging pipe, a number of fan blades are regularly fixed to the outer wall of the sleeve near the front end, and the driving gear is coaxially fixed to the front end of the sleeve; In this setting, when co-permeation gas is pumped into the intake pipe, it will drive the fan blades and the driving gear to rotate, and then drive the fixing component to rotate through the transmission of the driven gear, so that each tooth part of the alloy carbon steel teeth can be in uniform contact with the co-permeation gas to ensure the co-permeation treatment effect.

[0007] In the technical solution of the present invention, the rear cavity wall of the heating cavity is fixed to the rear wall of the furnace body, a sealing door is hinged to the front side of the furnace body, a furnace frame is fixed below the furnace body, a control console is provided on the left side of the furnace body, and the outer end of the intake pipe sequentially passes through the heating cavity and the furnace body and is connected to an external gas storage device through a gas supply pump; In this setting, the heating cavity is sealed by the sealing door to prevent the co-permeation gas from leaking, the internal environmental parameters of the furnace body are controlled by the control console, and the co-permeation gas is pumped into the furnace body through the gas pump.

[0008] In the technical solution of the present invention, the rear end of the outer rod is embedded in the rear side wall of the furnace body and the two are rotatably connected, the air cavity is filled with air, a sliding cavity is provided in the middle section of the outer rod, the front end of the sliding cavity is communicated with the rear end of the air cavity, the front end of the sliding rod is slidably connected in the sliding cavity, wing flanges are symmetrically fixed to the upper and lower sides of the front end of the sliding rod, and the sliding cavity is adapted to the shape of the front end of the sliding rod; In this setting, during the heating process, the gas in the air cavity continuously expands and pushes the sliding rod forward. By setting the flange, the sliding rod can only slide back and forth, preventing it from rotating. At the same time, the outer surface of the front end of the sliding rod can be made of ceramic material to ensure airtightness.

[0009] In the technical solution of the present invention, the rotating rod is rotatably connected to the inner part of the outer rod near the rear end. A disc is coaxially fixed to the rear end of the outer rod. The rotating rod passes through the rear side wall of the disc and is coaxially fixed to the rotating plate. An installation ring is coaxially fixed to the outer periphery of the rear side wall of the rotating plate. The installation ring is embedded in the rear side wall of the disc. The rear end of the sliding rod is slidably connected to the rotating rod, and the push rod is adapted to the spiral groove. In this setting, by setting the installation ring, the rotating plate can be supported without affecting its rotation. By setting the push rod to be adapted to the spiral groove, when the push rod moves forward, it can drive the rotating rod to rotate through the spiral groove, thereby driving the rotating plate to rotate.

[0010] In the technical solution of the present invention, the disc is provided with an activity groove adapted to the position and size of the clamping jaw. The activity groove is radially arranged. The rear end of the clamping jaw passes through the activity groove and is clamped with the spiral block. The spiral block is integrally in the shape of an equidistant spiral. The left and right sides of the edge side wall of the disc are symmetrically fixed with stop rods. In this setting, by setting the activity groove to limit the clamping jaw, the clamping jaw can only move radially. By setting the spiral block to be integrally in the shape of an equidistant spiral, the spiral block can push the clamping jaws to move radially synchronously.

[0011] In the technical solution of the present invention, a number of regularly distributed chutes are provided on the outer side wall of the clamping jaw. The clamping block is slidably connected in the corresponding chute. Limiting rods are symmetrically arranged on the left and right sides in the chute. The limiting rods pass through the corresponding clamping blocks and are slidably connected to each other. A spring is sleeved on the outer wall of the limiting rod below the clamping block. A gear blank is provided between two adjacent clamping blocks. In this setting, by setting the clamping blocks, the gear blanks can be separated, enabling the gear blanks to be fully in contact with the co-permeation gas and preventing the gear blanks from approaching each other to avoid heat treatment dead corners.

[0012] In the technical solution of the present invention, the front end of the purging pipe extends into the inner end air outlet of the inlet pipe, and the purging pipe and the inlet pipe are coaxially arranged. The purging pipe is fixed to the inlet pipe through two fixing rods symmetrically arranged up and down. The position of the air outlet of the purging pipe corresponds to the tooth part position of the gear blank. In this setting, by extending the front end of the purging pipe into the inner end of the inlet pipe, when the inlet pipe is pumped with co-permeation gas, a part of the gas can directly purge the tooth surface of the gear blank from the purging pipe without being blocked by the linkage structure. At the same time, the position of the air outlet of the purging pipe corresponds to the tooth part position of the gear blank, ensuring that the co-permeation gas sent out by the purging pipe can fully contact the tooth surface of the gear blank.

[0013] In the technical solution of the present invention, the barrel sleeve is rotatably connected to the outside of the middle section of the purging pipe, the driving gear meshes with the driven gear, and the diameter of the driven gear is larger than that of the driving gear; In this setting, the diameter of the driven gear is larger than that of the driving gear, ensuring that the rotational speed of the driven gear is much lower than that of the driving gear, and further ensuring that the entire fixing assembly rotates slowly, enabling each tooth surface of the tooth blank to have sufficient contact time with the co-permeation gas, and thus ensuring the co-permeation effect.

[0014] In the technical solution of the present invention, a blocking plate is provided outside the purging pipe. The purging pipe is symmetrically provided with outward protrusions at the upper and lower parts near the front end. The blocking plate is slidably connected to the outside of the purging pipe. A pin rod is fixed to the bottom of the rear side wall of the blocking plate, and a pin hole adapted to the pin rod is provided on the tooth surface of the driven gear; In this setting, by providing the pin rod and the pin hole, before the co-permeation gas is introduced, the pin rod is inserted into the pin hole. At this time, the driven gear and the driving gear cannot rotate relative to each other, and further ensuring that the outer rod cannot rotate, avoiding the simultaneous rotation of the outer rod and the rotating rod when the rotating rod is rotated by the push rod and the spiral groove, resulting in the inability to achieve the radial movement of the clamping jaw and the tooth blank cannot be fixed.

[0015] On the other hand, the present invention also provides a multi-component synergistic heat treatment strengthening process for improving the wear resistance of alloy carbon steel teeth. Using the above-mentioned multi-component synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth, it includes the following steps: S1. Place the pretreated tooth blank between adjacent clamping blocks. After placement, close the sealing door and start heating the heating chamber; S2. During the heating process, the air in the air chamber expands due to heat and pushes the sliding rod forward, and under the action of the push rod and the spiral groove, the rotating rod rotates to drive the rotating plate to rotate, and then drives the clamping jaw to move radially outward through the spiral block, so that the tooth blank is fixed; S3. After the tooth blank is fixed, keep it at a high temperature, and start the air supply pump to pump in the required co-permeation gas. When the co-permeation gas is blown out from the air outlet of the inlet pipe, part of the gas enters the purging pipe and blows towards the tooth surface of the tooth blank, and the other part of the gas blows the blocking plate to slide backward along the outward protrusion, so that the pin rod exits the pin hole; S4. After the pin rod exits the pin hole, the gas can blow the fan blade to drive the driving gear to drive the driven gear to rotate, and then drive the outer rod to rotate, so that the disc and the clamping jaw rotate synchronously to drive the tooth blank to rotate slowly.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are: 1. In the present invention, by providing a fixing component, during heat treatment, the air in the air cavity expands when heated, pushing the sliding rod forward, and under the action of the push rod and the spiral groove, the rotating rod rotates to drive the rotating plate to rotate, and then the clamping jaws move radially outward through the spiral blocks, fixing the gear blanks, avoiding the mutual collision of the gear blanks during ventilation and purging. At the same time, the clamping blocks can separate each gear blank, avoiding the occurrence of common carburizing dead corners and improving the quality of common carburizing.

[0017] 2. In the present invention, by providing an air supply component, when starting the air supply pump to pump in the required common carburizing gas, when the common carburizing gas is blown out from the air outlet of the intake pipe, a part of the gas enters the purging pipe and blows towards the tooth surfaces of the gear blanks, enabling the tooth valleys to be in full contact with the common carburizing gas. Another part of the gas blows the blocking plate to slide backward along the convex block, causing the pin rod to withdraw from the pin hole. At this time, the gas can blow the fan blades to drive the driven gear to rotate by the driving gear, and then drive the outer rod to rotate, causing the disk and the clamping jaws to rotate synchronously and driving the gear blanks to rotate slowly, so as to ensure that each tooth surface is in full contact with the common carburizing gas, thereby ensuring the quality of common carburizing. Brief Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the interior of the furnace body of the present invention; Figure 3 is a schematic diagram of the interior of the heating cavity of the present invention; Figure 4 is a schematic diagram of the fixing component of the present invention; Figure 5 is a sectional view of the fixing component of the present invention; Figure 6 is a sectional view of the transmission structure of the present invention; Figure 7 is an exploded view of the transmission structure of the present invention; Figure 8 is a sectional view of the placement structure of the present invention; Figure 9 is a schematic diagram of the air supply component of the present invention; Figure 10 is an exploded view of the air supply component of the present invention; Figure 11 is a schematic diagram of another perspective of the blocking plate of the present invention; Explanation of the Reference Numerals: 1. Heat treatment component; 11. Furnace body; 12. Sealing door; 13. Furnace frame; 14. Heating cavity; 2. Fixed component; 21. Rotating structure; 211. Outer rod; 212. Air cavity; 213. Sliding cavity; 214. Sliding rod; 215. Push rod; 22. Transmission structure; 221. Disc; 222. Rotating rod; 223. Rotating plate; 224. Spiral block; 225. Spiral groove; 23. Placing structure; 231. Claw; 232. Chute; 233. Block; 234. Limiting rod; 235. Spring; 24. Driven gear; 241. Pin hole; 25. Stop rod 3. Air supply component; 31. Intake pipe; 32. Blowing pipe; 33. Linkage structure; 331. Sleeve; 332. Fan blade; 333. Driving gear; 334. Baffle; 335. Pin rod; 34. Fixed rod; 35. Outer convex block 4. Gear blank 5. Control console 6. Air supply pump Detailed implementation manners

[0019] The following combines the accompanying drawings to describe in detail the specific implementation manners of the present invention. However, it should be understood that the protection scope of the present invention is not limited by the specific implementation manners

[0020] Unless otherwise clearly stated, throughout the specification, the term "comprising" or its variations such as "including" or "including with" etc. will be understood to include the stated elements or components, without excluding other elements or other components

[0021] Refer to Figures 1-11 As shown, this embodiment provides a technical solution A multi - component cooperative heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth, including a heat treatment component 1. The heat treatment component 1 includes a furnace body 11 and a heating cavity 14. Inside the heating cavity 14, there are a fixed component 2 and an air supply component 3. The alloy carbon steel teeth are fixed by setting the fixed component 2, and the multi - component co - infiltration gas sent in is directly blown onto the tooth surface through setting the air supply component 3, avoiding that the tooth valleys cannot fully contact with the multi - component co - infiltration gas. At the same time, it can drive the fixed component 2 to rotate slowly, so that the tooth surface contacts the multi - component co - infiltration gas evenly, thereby improving the co - infiltration treatment effect The fixed component 2 includes a rotating structure 21, a transmission structure 22 and a plurality of placing structures 23. The rotating structure 21 includes an outer rod 211 and a sliding rod 214. An air cavity 212 is arranged at the rear end inside the outer rod 211. A driven gear 24 is fixed on the outer wall of the outer rod 211 near the front end. A push rod 215 is fixed on the rod wall of the sliding rod 214 near the rear end. When the gas inside the air cavity 212 expands due to heat, it will push the sliding rod 214 forward and drive the push rod 215 to move forward The transmission structure 22 includes a rotating rod 222 and a rotating plate 223. The rotating rod 222 is arranged near the rear end inside the outer rod 211. The rear end of the rotating rod 222 is coaxially fixed to the rotating plate 223. A spiral block 224 is fixed on the front side of the rotating plate 223. The rear end of the sliding rod 214 extends into the rotating rod 222 and the two are slidably connected. A spiral groove 225 is provided in the rotating rod 222. When the push rod 215 moves forward, it will give a forward thrust to the spiral groove 225 to drive the rotating rod 222 to rotate, and then drive the rotating plate 223 to rotate synchronously. The placing structure 23 includes clamping jaws 231 and a number of clamping blocks 233 regularly distributed along the clamping jaws 231. When the rotating plate 223 drives the spiral block 224 to rotate, it will drive the clamping jaws 231 to move radially outward to clamp and fix the inner hole wall of the alloy carbon steel teeth. The air supply assembly 3 includes an air inlet pipe 31, a purging pipe 32, and a linkage structure 33. The linkage structure 33 includes a sleeve 331, a number of fan blades 332, and a driving gear 333. The sleeve 331 is rotatably connected to the outside of the purging pipe 32. A number of fan blades 332 are regularly fixed on the outer wall of the sleeve 331 near the front end. The driving gear 333 is coaxially fixed to the front end of the sleeve 331. When the carburizing gas is pumped into the air inlet pipe 31, it will drive the fan blades 332 and the driving gear 333 to rotate, and then drive the fixing assembly 2 to rotate through the driven gear 24, so that each tooth part of the alloy carbon steel teeth can be in uniform contact with the carburizing gas to ensure the carburizing treatment effect.

[0022] Please refer to Figures 1-3 As shown in the figure, the rear cavity wall of the heating chamber 14 is fixed to the rear wall of the furnace body 11. The furnace body 11 is a single-chamber vacuum furnace capable of performing carburizing, quenching, and tempering. A sealing door 12 is hinged to the front side of the furnace body 11. The front side wall of the heating chamber 14 is sealed with the sealing door 12 to prevent the leakage of carburizing gas. A furnace frame 13 is fixed below the furnace body 11. A control console 5 is provided on the left side of the furnace body 11. The control console 5 controls the environment inside the furnace body 11 through pressure sensors and temperature sensors inside the furnace body 11. This is the prior art of a single-chamber vacuum furnace and will not be elaborated here. The outer end of the air inlet pipe 31 passes through the heating chamber 14 and the furnace body 11 in sequence and is connected to an external gas storage device through an air supply pump 6.

[0023] Please refer to Figures 4-7As shown in the figure, the rear end of the outer rod 211 is embedded in the rear side wall of the furnace body 11 and the two are rotatably connected. The air chamber 212 is filled with air. A sliding chamber 213 is provided in the middle section of the outer rod 211. The front end of the sliding chamber 213 is communicated with the rear end of the air chamber 212. During the heating process, the gas in the air chamber 212 continuously expands, thereby pushing the sliding rod 214 to slide forward. The front end of the sliding rod 214 is slidably connected in the sliding chamber 213. A control air valve is provided on the wall of the air chamber 212 to prevent the air pressure in the air chamber 212 from being too high. This is the prior art and will not be elaborated here. Wings are symmetrically fixed up and down at the front end of the sliding rod 214. By providing the wings, the sliding rod 214 can only slide back and forth, preventing it from rotating. The shapes of the sliding chamber 213 and the front end of the sliding rod 214 are adapted to each other, ensuring the sealing performance at the front end of the sliding rod 214 so that the expanded air can push the sliding rod 214 to slide forward. The outer surface of the front end of the sliding rod 214 can be made of ceramic material to ensure the sealing performance. The ceramic and the sliding rod 214 can be welded by the method of active brazing. This is the prior art and will not be elaborated here.

[0024] Specifically, the rotating rod 222 is rotatably connected inside the outer rod 211 near the rear end. A disc 221 is coaxially fixed at the rear end of the outer rod 211. The rotating rod 222 passes through the rear side wall of the disc 221 and is coaxially fixed with the rotating plate 223. An installation ring is coaxially fixed on the outer periphery of the rear side wall of the rotating plate 223. By providing the installation ring, the rotating plate 223 can be supported while not affecting the rotation of the rotating plate 223. The installation ring is embedded in the rear side wall of the disc 221. The rear end of the sliding rod 214 is slidably connected inside the rotating rod 222. The push rod 215 and the spiral groove 225 are adapted to each other. When the push rod 215 moves forward, it can push the rotating rod 222 to rotate through the spiral groove 225, thereby driving the rotating plate 223 to rotate.

[0025] Furthermore, an activity groove adapted to the position and size of the clamping jaw 231 is provided on the disc 221. The activity groove is radially arranged. By providing the activity groove, the clamping jaw 231 is limited. The rear end of the clamping jaw 231 passes through the activity groove and is clamped with the spiral block 224. The spiral block 224 is integrally in an equidistant spiral shape. When the spiral block 224 rotates with the rotating plate 223, it will push the clamping jaw 231 to move radially synchronously, so that the clamping jaw 231 is tightly fixed against the inner hole wall of the alloy carbon steel teeth. Ceramic is welded on the outer surface of the clamping jaw 231 by the method of active brazing to increase the friction force. Stop rods 25 are symmetrically fixed on the left and right of the edge side wall of the disc 221 to prevent the alloy carbon steel teeth from sliding out backward.

[0026] Please refer to Figure 8As shown, several regularly distributed sliding grooves 232 are provided on the outer wall of the jaw 231. The clamping block 233 is slidably connected in the corresponding sliding groove 232. The sliding groove 232 is symmetrically provided with limiting rods 234 on the left and right. The limiting rod 234 passes through the corresponding clamping block 233 and the two are slidably connected. A spring 235 is sleeved on the outer wall of the limiting rod 234 below the clamping block 233. A gear blank 4 is provided between two adjacent clamping blocks 233. By arranging the clamping block 233, the gear blank 4 can be separated, so that the gear blank 4 can fully contact the co-permeation gas, avoiding heat treatment dead angles caused by the gear blanks 4 approaching each other. The gear blank 4 is an embryo after pretreatment of alloy carbon steel teeth. It should be noted that the spring 235 is an Inconel X-750 nickel-based alloy spring, with a wire diameter of φ3mm, a mean diameter D = 40mm, an effective number of turns n = 12, and a free length of 100mm. It can not only ensure that the spring 235 can withstand high temperatures above 900°C, but also ensure that the spring 235 can be pushed by manpower, similar to the spring parameters of high-temperature valve control.

[0027] Please refer to Figures 9-11 As shown, the front end of the purging pipe 32 extends into the inner end air outlet of the intake pipe 31. When the co-permeation gas is pumped into the intake pipe 31, a part of the gas can directly purge the tooth surface of the gear blank 4 from the purging pipe 32 without being blocked by the linkage structure 33. And the purging pipe 32 and the intake pipe 31 are coaxially arranged. The purging pipe 32 is fixed to the intake pipe 31 by two fixing rods 34 symmetrically arranged up and down. The position of the air outlet of the purging pipe 32 corresponds to the tooth part position of the gear blank 4, ensuring that the co-permeation gas sent out by the purging pipe 32 can fully contact the tooth surface of the gear blank 4. It should be noted that the air outlet of the purging pipe 32 can be connected to a metal bellows through bolts to ensure that the air outlet corresponds to the tooth surface of the gear blank 4. The metal bellows can be a nickel-based alloy metal bellows.

[0028] Specifically, the barrel sleeve 331 is rotatably connected to the middle section of the purging pipe 32. The driving gear 333 meshes with the driven gear 24. The diameter of the driven gear 24 is larger than that of the driving gear 333, ensuring that the rotation speed of the driven gear 24 is much lower than that of the driving gear 333, and further ensuring that the entire fixing assembly 2 rotates slowly, so that each tooth surface of the gear blank 4 has sufficient contact time with the co-permeation gas.

[0029] Further, a baffle 334 is provided outside the purging pipe 32. Outer convex blocks 35 are symmetrically provided on the upper and lower sides of the front end of the purging pipe 32. The baffle 334 is slidably connected outside the purging pipe 32. A pin rod 335 is fixed to the bottom of the rear side wall of the baffle 334. A pin hole 241 adapted to the pin rod 335 is provided on the tooth surface of the driven gear 24. Before the co-permeation gas is introduced, the pin rod 335 is inserted into the pin hole 241. At this time, the driven gear 24 and the driving gear 333 cannot rotate relative to each other, thereby ensuring that the outer rod 211 cannot rotate, and avoiding the simultaneous rotation of the outer rod 211 and the rotating rod 222 when the rotating rod 222 is rotated by the push rod 215 and the spiral groove 225, which results in the inability to achieve the radial movement of the jaw 231 and the tooth blank 4 cannot be fixed.

[0030] The present invention also provides a multi-component synergistic heat treatment strengthening process for improving the wear resistance of alloy carbon steel teeth. Using the above-mentioned multi-component synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth, the following steps are included: S1. Place the pretreated tooth blank 4 between adjacent clamping blocks 233. After placement, close the sealing door 12 and start heating the heating chamber 14. S2. During the heating process, the air in the air chamber 212 expands due to heat and pushes the sliding rod 214 forward. Under the action of the push rod 215 and the spiral groove 225, the rotating rod 222 rotates to drive the rotating plate 223 to rotate. Then, the jaw 231 is driven to move radially outward through the spiral block 224, so that the tooth blank 4 is fixed. S3. After the tooth blank 4 is fixed, keep the high temperature and start the air supply pump 6 to pump in the required co-permeation gas. When the co-permeation gas is blown out from the air outlet of the air inlet pipe 31, a part of the gas enters the purging pipe 32 and blows towards the tooth surface of the tooth blank 4, and the other part of the gas blows the baffle 334 to slide backward along the outer convex block 35, so that the pin rod 335 withdraws from the pin hole 241. S4. After the pin rod 335 withdraws from the pin hole 241, the gas can blow the fan blade 332 to drive the driving gear 333 to drive the driven gear 24 to rotate, thereby driving the outer rod 211 to rotate, so that the disc 221 and the jaw 231 rotate synchronously to drive the tooth blank 4 to rotate slowly. After the multi-component synergistic co-permeation treatment is completed, gas quenching is directly carried out in the furnace body 11. After cooling, since it is no longer necessary to drive the tooth blank 4 to rotate at this time and only the tooth blank 4 needs to be separated, the jaw 231 can be unfixed at this time without affecting the quenching and tempering treatments.

[0031] The foregoing description of specific exemplary embodiments of the invention is for purposes of illustration and exemplification. These descriptions are not intended to limit the invention to the precise forms disclosed, and it is apparent that, in light of the above teachings, many modifications and variations are possible. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the invention and its practical application so that those skilled in the art can implement and utilize the various different exemplary embodiments of the invention, as well as various different selections and modifications. The scope of the invention is intended to be defined by the specification and its equivalents.

Claims

1. A multi - component synergistic heat treatment strengthening device for improving the wear resistance of alloy carbon steel gear teeth, including a heat treatment component, the heat treatment component includes a furnace body and a heating chamber, characterized in that: A fixing component and an air supply component are provided in the heating cavity; The fixing component includes a rotating structure, a transmission structure, and a plurality of placing structures; The rotating structure includes an outer rod and a sliding rod; an air cavity is provided at the rear end inside the outer rod, a driven gear is fixed to the outer wall of the outer rod near the front end, and a push rod is fixed to the rod wall of the sliding rod near the rear end; The transmission structure includes a rotating rod and a rotating plate; the rotating rod is arranged at the rear end inside the outer rod, the rear end of the rotating rod is coaxially fixed to the rotating plate, a spiral block is fixed to the front side surface of the rotating plate, the rear end of the sliding rod extends into the rotating rod and the two are slidably connected, and a spiral groove is provided inside the rotating rod; The placing structure includes a clamping jaw and a plurality of blocks regularly distributed along the clamping jaw; The air supply component includes an air inlet pipe, a purging pipe, and a linkage structure; The linkage structure includes a sleeve, a plurality of fan blades, and a driving gear; the sleeve is rotatably connected to the outside of the purging pipe, a plurality of fan blades are regularly fixed to the outer wall of the sleeve near the front end, and the driving gear is coaxially fixed to the front end of the sleeve.

2. The multi - element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth according to claim 1, characterized in that: The rear cavity wall of the heating cavity is fixed to the rear wall of the furnace body, a sealing door is hinged to the front side of the furnace body, a furnace frame is fixed below the furnace body, a control console is provided on the left side of the furnace body, and the outer end of the air inlet pipe sequentially passes through the heating cavity and the furnace body and is connected to an external gas storage device through an air supply pump.

3. The multi - synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth as described in claim 2, characterized in that: The rear end of the outer rod is embedded in the rear side wall of the furnace body and the two are rotatably connected, the air cavity is filled with air, a sliding cavity is provided in the middle section of the outer rod, the front end of the sliding cavity is communicated with the rear end of the air cavity, the front end of the sliding rod is slidably connected in the sliding cavity, wing flanges are symmetrically fixed to the upper and lower sides of the front end of the sliding rod, and the sliding cavity is adapted to the shape of the front end of the sliding rod.

4. The multi-component synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth as described in claim 3, characterized in that: The rotating rod is rotatably connected to the inside of the outer rod near the rear end, a disc is coaxially fixed to the rear end of the outer rod, the rotating rod passes through the rear side wall of the disc and is coaxially fixed to the rotating plate, an installation ring is coaxially fixed to the outer periphery of the rear side wall of the rotating plate, the installation ring is embedded in the rear side wall of the disc, the rear end of the sliding rod is slidably connected in the rotating rod, and the push rod is adapted to the spiral groove.

5. The multi - synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth as described in claim 4, characterized in that: An activity groove adapted to the position and size of the clamping jaw is provided on the disc, the activity groove is radially arranged, the rear end of the clamping jaw passes through the activity groove and is clamped to the spiral block, the spiral block is integrally in an equidistant spiral shape, and retaining rods are symmetrically fixed to the left and right side walls of the edge of the disc.

6. The multi - synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth as described in claim 5, characterized in that: A plurality of sliding grooves are regularly arranged on the outer side wall of the clamping jaw, the blocks are slidably connected in the corresponding sliding grooves, limiting rods are symmetrically arranged on the left and right sides in the sliding grooves, the limiting rods pass through the corresponding blocks and the two are slidably connected, springs are sleeved on the outer walls of the limiting rods below the blocks, and a tooth blank is provided between adjacent two blocks.

7. The multi-component synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth as described in claim 6, characterized in that: The front end of the purging pipe extends into the air outlet of the inner end of the air inlet pipe, and the purging pipe and the air inlet pipe are coaxially arranged. The purging pipe is fixed to the air inlet pipe through two fixing rods symmetrically arranged up and down, and the position of the air outlet of the purging pipe corresponds to the tooth part of the tooth blank.

8. The multi-component synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth as described in claim 7, characterized in that: The sleeve is rotatably connected to the middle section outside the purging pipe, the driving gear meshes with the driven gear, and the diameter of the driven gear is larger than the diameter of the driving gear.

9. The multi - element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth according to claim 8, characterized in that: A baffle is provided outside the purging pipe. Outer convex blocks are symmetrically arranged on the upper and lower sides of the front end of the purging pipe. The baffle is slidably connected outside the purging pipe. A pin rod is fixed to the bottom of the rear side wall of the baffle. A pin hole adapted to the pin rod is provided on the tooth surface of the driven gear.

10. A multi - element synergistic heat treatment strengthening process for improving the wear resistance of alloy carbon steel gear teeth, using the multi - element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gear teeth according to any one of claims 1 - 9, characterized in that, It includes the following steps: S1. Place the pre-treated gear blank between adjacent clamping blocks. After placement, close the sealing door and start heating the heating chamber. S2. During the heating process, the air in the air chamber expands due to heat and pushes the sliding rod forward. Under the action of the push rod and the spiral groove, the rotating rod rotates to drive the rotating plate to rotate, and then drives the clamping jaws to move radially outwards through the spiral block, so that the gear blank is fixed. S3. After the gear blank is fixed, keep it at a high temperature and start the air supply pump to pump in the required co-permeation gas. When the co-permeation gas is blown out from the air outlet of the air inlet pipe, part of the gas enters the purging pipe and blows towards the tooth surface of the gear blank, and the other part of the gas blows the baffle to slide backwards along the outer convex block, so that the pin rod withdraws from the pin hole. S4. After the pin rod withdraws from the pin hole, the gas can blow the fan blades to drive the driven gear to rotate by the driving gear, and then drive the outer rod to rotate, so that the disc and the clamping jaws rotate synchronously to drive the gear blank to rotate slowly.

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