Multielement synergic heat treatment strengthening equipment and process for improving wear resistance of alloy carbon steel iron teeth

Abstract

The present application relates to gear heat treatment technical field, specifically, it relates to the multi-element synergic heat treatment strengthening equipment and process for improving the wear resistance of alloy carbon steel iron tooth, including heat treatment assembly, heat treatment assembly includes furnace body, heating cavity, heating cavity is equipped with fixed assembly and gas feeding assembly, fixed assembly includes rotating structure, transmission structure and a plurality of placement structure, gas feeding assembly includes gas inlet pipe, purge pipe, linkage structure. The equipment is fixed by setting fixed assembly, the interval is fixed between each tooth blank during heat treatment, the mutual approach of tooth blank is avoided, and the co-permeation dead angle is avoided, the co-permeation quality is influenced, the co-permeation gas is directly swept tooth surface by setting gas feeding assembly when co-permeation gas is input, so as to ensure that tooth surface and co-permeation gas can be fully contacted, and the fixed assembly can be driven to rotate by co-permeation gas, and then the tooth surface of tooth blank can be contacted with co-permeation gas evenly to ensure the uniformity of co-permeation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gear heat treatment, and particularly relates to a multi-element synergistic heat treatment strengthening equipment and process for improving the wear resistance of alloy carbon steel gears. BACKGROUND

[0002] Alloy carbon steel gears are commonly used in heavy load and high wear resistance scenarios, so further treatment is needed during production to improve wear resistance. Multi-element gas permeation is usually used to improve wear resistance, such as carbonitriding, sulfonitriding, and quinary permeation.

[0003] For example, the application with the publication number CN119824180A discloses a quenching and tempering integrated equipment for wind power gear steel production and a production process thereof in the technical field of quenching and tempering. The equipment includes a base frame, a feeding module, a conveying module, a heating furnace, a quenching tank, a tempering furnace, a gas conveying part, and a storage and heat preservation module. The base frame includes a rail frame, and the upper side of the rail frame is fixedly connected with a frame. The inner side of the frame is provided with a guide rail. The left end of the rail frame is provided with a feeding module. The feeding module includes a conveying part inside the rail frame. The conveying part includes a bottom plate. The upper side of the bottom plate is fixedly connected with a support rod at the four corners. The upper side of the left and right support rods is fixedly connected with a side plate.

[0004] In combination with the above case and actual situation, we find the following problems: when the gear is heat treated, the gear is directly placed on the placing rack or hung up with a hook, and then the permeation gas is introduced. The permeation is carried out through the diffusion of the gas. However, the gear tooth surface is uneven, and the tooth valley is usually difficult to directly contact with the permeation gas, which leads to the uneven phenomenon of the tooth surface permeation and affects the permeation quality. SUMMARY

[0005] The purpose of the present application is to provide a multi-element synergistic heat treatment strengthening equipment and process for improving the wear resistance of alloy carbon steel gears to solve the problem of uneven gear tooth surface, tooth valley and permeation gas, which leads to the uneven phenomenon of tooth surface permeation and affects the permeation quality in the prior art.

[0006] To achieve the above purpose, the present application provides a multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel gears, which comprises a heat treatment assembly. The heat treatment assembly comprises a furnace body and a heating cavity. The heating cavity is provided with a fixing assembly and a gas feeding assembly.

[0007] In this setting, the alloy carbon steel gear is fixed by the fixing assembly, and the multi-element permeation gas is directly blown to the tooth surface by the gas feeding assembly, avoiding the tooth valley from not being in full contact with the multi-element permeation gas. At the same time, the fixing assembly can be slowly rotated, so that the tooth surface is in uniform contact with the multi-element permeation gas, thereby improving the permeation treatment effect.

[0008] The fixing assembly comprises a rotating structure, a transmission structure and a plurality of placing structures;

[0009] The rotating structure comprises an outer rod and a sliding rod; the inner rear end of the outer rod is provided with an air cavity, and the outer wall of the outer rod is fixed with a driven gear at the front end; the rod wall of the sliding rod is fixed with a push rod at the rear end;

[0010] In this arrangement, when the gas in the air cavity expands after being heated, it will push the sliding rod forward to move the push rod forward;

[0011] The transmission structure comprises a rotating rod and a rotating plate; the rotating rod is arranged at the inner rear end of the outer rod, the rear end of the rotating rod is coaxially fixed with the rotating plate, the front side of the rotating plate is fixed with a spiral block, the rear end of the sliding rod extends into the rotating rod and is slidingly connected with the rotating rod, and the rotating rod is provided with a spiral groove;

[0012] In this arrangement, when the push rod moves forward, it will give the spiral groove a forward thrust to drive the rotating rod to rotate, thereby driving the rotating plate to rotate synchronously;

[0013] The placing structure comprises a clamping jaw and a plurality of clamping blocks regularly distributed along the clamping jaw;

[0014] In this arrangement, 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 tooth;

[0015] The air feeding assembly comprises an air inlet pipe, a blowing pipe and a linkage structure;

[0016] The linkage structure comprises a sleeve, a plurality of fan blades and a driving gear; the sleeve is rotationally connected to the outside of the blowing pipe, the plurality of fan blades are regularly fixed to the outer wall of the sleeve at the front end, and the driving gear is coaxially fixed to the front end of the sleeve;

[0017] In this arrangement, when the co-diffusion gas is pumped into the air inlet pipe, it will drive the fan blades and the driving gear to rotate, thereby driving the fixing assembly to rotate through the transmission of the driven gear, so that each tooth part of the alloy carbon steel tooth can be uniformly contacted with the co-diffusion gas, to ensure the co-diffusion treatment effect.

[0018] In the technical scheme of the present application, the rear cavity wall of the heating cavity is fixed with the rear wall of the furnace body, the front side of the furnace body is hingedly connected with a sealing door, the lower side of the furnace body is fixed with a furnace stand, the left side of the furnace body is provided with a control console, and the outer end of the air inlet pipe sequentially passes through the heating cavity and the furnace body and is connected with an external gas storage device through an air pump;

[0019] In this arrangement, the heating cavity is sealed by the sealing door to avoid the leakage of the co-diffusion gas, the environmental parameters inside the furnace body are controlled by the control console, and the co-diffusion gas is pumped into the furnace body by the air pump.

[0020] The outer rod rear end is embedded in the rear side wall of the furnace body and rotationally connected with the same, the air cavity is filled with air, the outer rod middle section is provided with a sliding cavity, the sliding cavity front end is communicated with the air cavity rear end, the sliding rod front end is slidingly connected in the sliding cavity, the sliding rod front end is symmetrically fixed with flanges up and down, and the sliding cavity and the sliding rod front end are matched in shape;

[0021] In the arrangement, the gas in the air cavity continuously expands during the heating process to push the sliding rod to slide forward, the sliding rod can only slide forward and backward by arranging the flanges to avoid rotation, and the outer surface of the sliding rod front end can be made of ceramic material to ensure the sealing performance.

[0022] In the technical scheme, the rotating rod is rotationally connected in the outer rod rear end, the outer rod rear end is coaxially fixed with a disc, the rotating rod is coaxially fixed with the rotating plate after penetrating through the disc rear side wall, the rotating plate rear side wall is coaxially fixed with a mounting ring at the outer periphery, the mounting ring is embedded in the disc rear side wall, the sliding rod rear end is slidingly connected in the rotating rod, and the push rod and the spiral groove are matched;

[0023] In the arrangement, the mounting ring can support the rotating plate without affecting the rotation of the rotating plate, the push rod and the spiral groove are matched to enable the push rod to push the rotating rod to rotate through the spiral groove when the push rod moves forward, and the rotating plate is driven to rotate.

[0024] In the technical scheme, the disc is provided with a movable groove matched with the size and position of the clamping jaw in a radial direction, the clamping jaw rear end penetrates through the movable groove and is connected with the spiral block, the spiral block is in the shape of equidistant spiral line as a whole, and the disc edge side wall is fixed with a blocking rod symmetrically left and right;

[0025] In the arrangement, the movable groove is arranged to limit the clamping jaw to move only in the radial direction, and the spiral block is in the shape of equidistant spiral line as a whole to enable the spiral block to push the clamping jaw to move synchronously in the radial direction.

[0026] In the technical scheme, the clamping jaw outer side wall is provided with a plurality of sliding grooves distributed regularly, the clamping block is slidingly connected in the corresponding sliding groove, the sliding groove is symmetrically provided with a limiting rod left and right, the limiting rod penetrates through the corresponding clamping block and is slidingly connected with the same, the limiting rod outer wall below the clamping block is sleeved with a spring, and the adjacent two clamping blocks are provided with a tooth embryo;

[0027] In the arrangement, the clamping block is arranged to separate the tooth embryos to enable the tooth embryos to fully contact with the gas for permeation and avoid the heat treatment dead angle caused by the tooth embryos close to each other.

[0028] The front end of the blowing pipe extends into the air outlet of the inner end of the air inlet pipe, and the blowing pipe and the air inlet pipe are coaxially arranged, the blowing pipe is fixed through two upper and lower symmetrical arrangements of the fixed rod and the air inlet pipe, and the air outlet position of the blowing pipe corresponds to the tooth position of the tooth blank;

[0029] In this arrangement, when the air inlet pipe is pumped into the co-diffusion gas, a part of the gas can directly blow the tooth surface of the tooth blank from the blowing pipe without being blocked by the linkage structure, and the air outlet position of the blowing pipe corresponds to the tooth position of the tooth blank, so that the co-diffusion gas sent by the blowing pipe can fully contact the tooth surface of the tooth blank.

[0030] In the technical scheme of the present application, the cylinder sleeve is rotationally connected outside the middle section of the blowing pipe, the driving tooth is engaged with the driven tooth, and the diameter of the driven tooth is greater than that of the driving tooth.

[0031] In this arrangement, the diameter of the driven tooth is greater than that of the driving tooth, so that the rotational speed of the driven tooth is much smaller than that of the driving tooth, thereby ensuring that the entire fixed assembly rotates slowly, so that each tooth surface of the tooth blank has sufficient contact time with the co-diffusion gas, thereby ensuring the co-diffusion effect.

[0032] In the technical scheme of the present application, the blowing pipe is provided with a blocking plate, the blowing pipe is provided with an outer protrusion symmetrically above and below the front end, the blocking plate is slidingly connected outside the blowing pipe, a pin rod is fixed to the bottom of the rear side wall of the blocking plate, and a pin hole is arranged on the tooth surface of the driven tooth and matched with the pin rod.

[0033] In this arrangement, by arranging the pin rod and the pin hole, before the co-diffusion gas is introduced, the pin rod is inserted into the pin hole, so that the driven tooth and the driving tooth cannot rotate relative to each other, thereby ensuring that the outer rod cannot rotate, avoiding the simultaneous rotation of the outer rod and the rotating rod when the push rod and the spiral groove make the rotating rod rotate, so that the radial movement of the clamping jaw cannot be realized, and the tooth blank cannot be fixed.

[0034] On the other hand, the present application also provides a multi-element synergistic heat treatment strengthening process for improving the wear resistance of alloy carbon steel iron teeth, which uses the above-mentioned multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel iron teeth, and includes the following steps:

[0035] S1, placing the pretreated tooth blank between the adjacent clamping blocks, after the placement is completed, closing the sealing door and starting the heating cavity to heat;

[0036] S2, during the heating process, the air in the air cavity expands 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, thereby driving the clamping jaw to move radially outward through the spiral block, so that the tooth blank is fixed;

[0037] S3, after the tooth embryo is fixed, continue to keep high temperature, and start the air pump to pump into the required gas, when the gas is blown out from the air outlet of the air inlet pipe, part of the gas enters the purge pipe to blow the tooth surface of the tooth embryo, and the other part of the gas blows the blocking plate to slide backward along the outer protrusion to make the pin rod exit the pin hole;

[0038] S4, when the pin rod exits the pin hole, the gas can blow the fan blade to drive the driven tooth to rotate, and then drive the outer rod to rotate, so that the disc and the clamp jaw rotate synchronously to drive the tooth embryo to rotate slowly.

[0039] As described above, by adopting the technical scheme, the present application has the following advantages:

[0040] 1. In the present application, by setting the fixing assembly, during heat treatment, the air in the air cavity expands forward to push the sliding rod, 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 spiral block drives the clamp jaw to move radially outward, so that the tooth embryo is fixed, avoiding the collision of the tooth embryos during air blowing and purging, and the clamping block can separate the tooth embryos to avoid the appearance of the diffusion dead angle and improve the diffusion quality.

[0041] 2. In the present application, by setting the air feeding assembly, when the air feeding pump is started to pump in the required diffusion gas, part of the gas enters the purge pipe to blow the tooth surface of the tooth embryo when the diffusion gas is blown out from the air outlet of the air inlet pipe, so that the tooth valley is in full contact with the diffusion gas, and the other part of the gas blows the blocking plate to slide backward along the outer protrusion to make the pin rod exit the pin hole. At this time, the gas can blow the fan blade to drive the driven tooth to rotate, and then drive the outer rod to rotate, so that the disc and the clamp jaw rotate synchronously to drive the tooth embryo to rotate slowly, so as to ensure that each tooth surface is in full contact with the diffusion gas, and then ensure the diffusion quality. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0043] Figure 2 It is a schematic diagram of the furnace body inside the present application;

[0044] Figure 3 It is a schematic diagram of the heating cavity inside the present application;

[0045] Figure 4 It is a schematic diagram of the fixing assembly in the present application;

[0046] Figure 5 It is a sectional view of the fixing assembly in the present application;

[0047] Figure 6 It is a sectional view of the transmission structure in the present application;

[0048] Figure 7 It is an explosion view of the transmission structure in the present application;

[0049] Figure 8 is a placement structure sectional view in the present application;

[0050] Figure 9 is a schematic view of a gas feeding assembly in the present application;

[0051] Figure 10 is an exploded view of a gas feeding assembly in the present application;

[0052] Figure 11 is a schematic view of a blocking plate in another view in the present application;

[0053] Explanation of reference signs:

[0054] 1, heat treatment assembly; 11, furnace body; 12, sealing door; 13, furnace frame; 14, heating cavity;

[0055] 2, fixing assembly; 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, placement structure; 231, clamping jaw; 232, sliding groove; 233, clamping block; 234, limiting rod; 235, spring; 24, driven tooth; 241, pin hole; 25, blocking rod;

[0056] 3, gas feeding assembly; 31, gas inlet pipe; 32, purge pipe; 33, linkage structure; 331, cylinder sleeve; 332, fan blade; 333, driving tooth; 334, blocking plate; 335, pin rod; 34, fixing rod; 35, outer protruding block;

[0057] 4, tooth embryo;

[0058] 5, control console;

[0059] 6, gas feeding pump. DETAILED DESCRIPTION

[0060] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present application is not limited by the specific embodiments.

[0061] Unless otherwise explicitly stated, throughout the specification, the term "comprise" or its variants such as "comprises" or "comprising" will be understood to encompass the stated element or components, but not to exclude other elements or components.

[0062] Reference Figures 1-11 The present embodiment provides a technical solution as shown:

[0063] The application discloses a multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth, which comprises a heat treatment assembly 1, wherein the heat treatment assembly 1 comprises a furnace body 11 and a heating cavity 14, the heating cavity 14 is internally provided with a fixing assembly 2 and a gas feeding assembly 3, the alloy carbon steel teeth are fixed through the fixing assembly 2, the multi-element co-permeation gas is directly blown to the tooth surface through the gas feeding assembly 3, the tooth valley cannot be in full contact with the multi-element co-permeation gas, meanwhile, the fixing assembly 2 can be slowly rotated, so that the tooth surface is uniformly contacted with the multi-element co-permeation gas, and the co-permeation treatment effect is improved.

[0064] The fixing assembly 2 comprises rotating structures 21, a transmission structure 22 and a plurality of placing structures 23, the rotating structure 21 comprises an outer rod 211 and a sliding rod 214, the air cavity 212 is arranged at the rear end of the outer rod 211, the driven gear 24 is fixed to the front end of the outer wall of the outer rod 211, and the push rod 215 is fixed to the rear end of the rod wall of the sliding rod 214; when the gas in the air cavity 212 is heated and expanded, the sliding rod 214 is pushed forward, and the push rod 215 is driven to move forward.

[0065] The transmission structure 22 comprises a rotating rod 222 and a rotating plate 223, the rotating rod 222 is arranged at the rear end of the outer rod 211, the rear end of the rotating rod 222 is coaxially fixed to the rotating plate 223, the spiral block 224 is fixed to the front side of the rotating plate 223, the rear end of the sliding rod 214 extends into the rotating rod 222 and is in sliding connection with the rotating rod 222, the spiral groove 225 is arranged in the rotating rod 222, when the push rod 215 moves forward, a forward thrust is generated on the spiral groove 225, the rotating rod 222 is driven to rotate, and the rotating plate 223 is synchronously driven to rotate.

[0066] The placing structure 23 comprises a clamping jaw 231 and a plurality of clamping blocks 233 which are regularly distributed along the clamping jaw 231, when the rotating plate 223 drives the spiral block 224 to rotate, the clamping jaw 231 is driven to move radially outward, and the inner hole wall of the alloy carbon steel teeth is clamped and fixed.

[0067] The gas feeding assembly 3 comprises an air inlet pipe 31, a blowing pipe 32 and a linkage structure 33.

[0068] The linkage structure 33 comprises a sleeve 331, a plurality of fan blades 332 and a driving gear 333, the sleeve 331 is rotationally connected to the blowing pipe 32, the plurality of fan blades 332 are regularly fixed to the front end of the outer wall of the sleeve 331, and the driving gear 333 is coaxially fixed to the front end of the sleeve 331; when the co-permeation gas is pumped into the air inlet pipe 31, the fan blades 332 and the driving gear 333 are driven to rotate, the fixing assembly 2 is driven to rotate through the driven gear 24, and each tooth part of the alloy carbon steel teeth can be uniformly contacted with the co-permeation gas, so that the co-permeation treatment effect is ensured.

[0069] Please refer to Figures 1-3As shown, the rear cavity wall of the heating cavity 14 is fixed with the rear wall of the furnace body 11, the furnace body 11 is a single-chamber vacuum furnace capable of carrying out co-permeation, 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 cavity 14 is sealed with the sealing door 12 to avoid the leakage of co-permeation gas, a furnace stand 13 is fixed below the furnace body 11, a control console 5 is arranged on the left side of the furnace body 11, the control console 5 controls the environment in the furnace body 11 through pressure sensors and temperature sensors arranged inside the furnace body 11, which is the prior art of the single-chamber vacuum furnace and will not be described here. The outer end of the gas inlet pipe 31 passes through the heating cavity 14 and the furnace body 11 in turn and is connected to the external gas storage device through the gas sending pump 6.

[0070] Please refer to Figures 4-7 As shown, the rear end of the outer rod 211 is embedded in the rear side wall of the furnace body 11 and is rotationally connected therewith, the air cavity 212 is filled with air, the outer rod 211 is provided with a sliding cavity 213 at the middle section, the front end of the sliding cavity 213 is communicated with the rear end of the air cavity 212, the gas in the air cavity 212 expands continuously during the heating process, thereby pushing the sliding rod 214 to slide forward, the front end of the sliding rod 214 is slidingly connected in the sliding cavity 213, a control valve is arranged on the cavity wall of the air cavity 212 to avoid excessive air pressure in the air cavity 212, which is the prior art and will not be described here. The front end of the sliding rod 214 is fixed with a flange symmetrically upward and downward, the flange is arranged to enable the sliding rod 214 to slide forward and backward only and avoid rotation, the sliding cavity 213 and the front end of the sliding rod 214 are shaped to match each other to ensure the sealing of 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, the ceramic material and the sliding rod 214 can be welded by active brazing, which is the prior art and will not be described here.

[0071] Specifically, the rotating rod 222 is rotationally connected in the outer rod 211 near the rear end, the rear end of the outer rod 211 is coaxially fixed with a disc 221, the rotating rod 222 passes through the rear side wall of the disc 221 and is coaxially fixed with a rotating plate 223, the rear side wall of the rotating plate 223 is coaxially fixed with a mounting ring outwardly, the mounting ring is embedded in the rear side wall of the disc 221, the rear end of the sliding rod 214 is slidingly connected in the rotating rod 222, the push rod 215 and the spiral groove 225 are matched with each other, the push rod 215 moves forward to push the rotating rod 222 to rotate through the spiral groove 225, thereby driving the rotating plate 223 to rotate.

[0072] Further, the disc 221 is provided with a movable groove matching the size of the position of the clamping jaw 231, the movable groove is arranged radially, the clamping jaw 231 is limited by the movable groove, the rear end of the clamping jaw 231 penetrates through the movable groove and is connected with the screw block 224, the screw block 224 is in the shape of equidistant spiral, when the screw block 224 rotates with the rotating plate 223, the clamping jaw 231 is pushed to move radially synchronously, so that the clamping jaw 231 is fixed tightly with the inner hole wall of the alloy carbon steel iron tooth, the outer surface of the clamping jaw 231 is welded with ceramic by active brazing to increase the friction, the disc 221 is symmetrically fixed with the stop rod 25 on the left and right side walls of the edge to avoid the alloy carbon steel iron tooth from sliding backward.

[0073] Please refer to Figure 8 As shown in the figure, a plurality of slide grooves 232 are regularly arranged on the outer side wall of the clamping jaw 231, the clamping block 233 is slidingly connected in the corresponding slide groove 232, the limiting rod 234 is symmetrically arranged in the left and right of the slide groove 232, the limiting rod 234 penetrates through the corresponding clamping block 233 and is slidingly connected with the clamping block 233, the outer wall of the limiting rod 234 below the clamping block 233 is sleeved with the spring 235, the tooth embryo 4 is arranged between the adjacent two clamping blocks 233, the clamping block 233 can separate the tooth embryo 4, so that the tooth embryo 4 can be fully contacted with the gas, and the heat treatment dead angle is avoided, the tooth embryo 4 is the embryo of the alloy carbon steel iron tooth after pretreatment, it should be noted that the spring 235 is an Inconel X-750 nickel-based alloy spring, the wire diameter is φ3mm, the middle diameter D=40mm, the effective number of turns n=12, the free length is 100mm, which can not only ensure that the spring 235 can withstand high temperature above 900℃, but also ensure that the spring 235 can be pushed by manpower, and the parameters of the high-temperature valve control spring are similar.

[0074] Please refer to Figures 9-11 As shown in the figure, the front end of the blowing pipe 32 penetrates into the gas outlet of the inlet pipe 31, when the inlet pipe 31 is pumped into the gas, a part of the gas can directly blow the tooth surface of the tooth embryo 4 through the blowing pipe 32 without being blocked by the linkage structure 33, the blowing pipe 32 and the inlet pipe 31 are coaxially arranged, the blowing pipe 32 is fixed with the inlet pipe 31 through the two symmetrically arranged upper and lower fixing rods 34, the position of the gas outlet of the blowing pipe 32 corresponds to the position of the tooth part of the tooth embryo 4, so as to ensure that the gas sent by the blowing pipe 32 can be fully contacted with the tooth surface of the tooth embryo 4, it should be noted that the gas outlet of the blowing pipe 32 can be connected with the metal bellows through bolts to ensure that the gas outlet corresponds to the tooth surface of the tooth embryo 4, and the metal bellows can be a nickel-based alloy metal bellows.

[0075] Specifically, the cylinder sleeve 331 is rotationally connected to the middle section of the blowing pipe 32, the driving tooth 333 is engaged with the driven tooth 24, the diameter of the driven tooth 24 is larger than that of the driving tooth 333, so as to ensure that the rotation speed of the driven tooth 24 is much smaller than that of the driving tooth 333, and then the whole fixing assembly 2 is slowly rotated, so that each tooth surface of the tooth embryo 4 has sufficient contact time with the gas.

[0076] Further, the blowing pipe 32 is externally provided with a blocking plate 334, the blowing pipe 32 is symmetrically provided with an external lug 35 on the front end, the blocking plate 334 is slidingly connected outside the blowing pipe 32, the rear side wall of the blocking plate 334 is fixed with a pin rod 335 at the bottom, the driven tooth 24 is provided with a pin hole 241 matched with the pin rod 335 on the tooth surface, before the infiltration gas is introduced, the pin rod 335 is inserted into the pin hole 241, at this time, the driven tooth 24 and the driving tooth 333 cannot rotate relative to each other, thereby ensuring that the outer rod 211 cannot rotate, avoiding that the outer rod 211 and the rotating rod 222 rotate at the same time when the push rod 215 and the spiral groove 225 make the rotating rod 222 rotate, so as to cause that the radial movement of the clamping jaw 231 cannot be realized, and the tooth blank 4 cannot be fixed.

[0077] The application also provides a multi-element synergistic heat treatment strengthening process for improving the wear resistance of alloy carbon steel teeth, and adopts the multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth.

[0078] S1, the pretreated tooth blank 4 is placed between the adjacent clamping blocks 233, after the placement is completed, the sealing door 12 is closed and the heating cavity 14 is started to heat;

[0079] S2, during the heating process, the air in the air cavity 212 expands and pushes the sliding rod 214 forward, and 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, and then the clamping jaw 231 is driven to move radially outward by the spiral block 224, so that the tooth blank 4 is fixed;

[0080] S3, after the tooth blank 4 is fixed, the high temperature is continued to be maintained, and the gas pump 6 is started to pump in the required infiltration gas, when the infiltration gas is blown out from the gas outlet of the gas inlet pipe 31, part of the gas enters the blowing pipe 32 to blow the tooth surface of the tooth blank 4, and the other part of the gas blows the blocking plate 334 to slide backward along the external lug 35 to make the pin rod 335 exit the pin hole 241;

[0081] S4, when the pin rod 335 exits the pin hole 241, the gas can drive the fan blade 332 to make the driving tooth 333 drive the driven tooth 24 to rotate, and then drive the outer rod 211 to rotate, so that the disc 221 and the clamping jaw 231 rotate synchronously to drive the tooth blank 4 to rotate slowly;

[0082] After the multi-element synergistic infiltration treatment is completed, gas quenching is directly carried out in the furnace body 11, after cooling, since the tooth blank 4 does not need to be driven to rotate at this time, only the tooth blank 4 needs to be separated, therefore, the clamping jaw 231 can be fixed without affecting the quenching and tempering treatment.

[0083] The foregoing description of specific exemplary embodiments of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with this detailed description, but rather by the claims appended hereto.

Claims

1. A multi-element synergistic heat treatment strengthening device for improving the wear resistance of alloy carbon steel teeth, comprising a heat treatment assembly, wherein the heat treatment assembly includes a furnace body and a heating chamber, characterized in that: The heating chamber is equipped with a fixing component and an air supply component; The fixed assembly includes a rotating structure, a transmission structure, and several placement structures; The rotating structure includes an outer rod and a sliding rod; an air cavity is provided in the inner rear end of the outer rod, a driven tooth is fixed to the outer wall of the outer rod near the front end, and a push rod is fixed to the sliding rod wall near the rear end. The transmission structure includes a rotating rod and a rotating plate; the rotating rod is located inside the outer rod near the rear end, the rear end of the rotating rod is coaxially fixed with the rotating plate, a spiral block is fixed on 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. The placement structure includes grippers and several locking blocks regularly distributed along the grippers; The air supply assembly includes an air inlet pipe, a purge pipe, and a linkage structure; The linkage structure includes a sleeve, several fan blades, and a drive gear; the sleeve is rotatably connected to the outside of the purge pipe, the several fan blades are regularly fixed on the outer wall of the sleeve near the front end, and the drive gear is coaxially fixed to the front end of the sleeve. The rotating rod is rotatably connected to the inner rear end of the outer rod. 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. The push rod and the spiral groove are compatible. The sleeve is rotatably connected to the outside of the middle section of the purge pipe, the driving tooth meshes with the driven tooth, and the diameter of the driven tooth is larger than the diameter of the driving tooth; The purge tube is provided with a baffle plate. The purge tube has symmetrically arranged external protrusions at the front end. The baffle plate is slidably connected to the outside of the purge tube. A pin is fixed to the bottom of the rear side wall of the baffle plate. The driven tooth surface is provided with a pin hole that matches the pin.

2. The multi-component synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth as described in claim 1, characterized in that: The rear wall of the heating chamber 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. The outer end of the air inlet pipe passes through the heating chamber and the furnace body in sequence and is connected to an external air storage device through an air pump.

3. The multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel 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. The middle section of the outer rod is provided with a sliding cavity. The front end of the sliding cavity is connected to the rear end of the air cavity. The front end of the slide rod is slidably connected in the sliding cavity. The front end of the slide rod is symmetrically fixed with flanges at the top and bottom. The shape of the sliding cavity is adapted to the front end of the slide rod.

4. The multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth as described in claim 3, characterized in that: The disc is provided with a movable groove that matches the position and size of the gripper. The movable groove is arranged radially. The rear end of the gripper passes through the movable groove and engages with the spiral block. The spiral block is equidistantly spiral in shape. The disc edge sidewall is symmetrically fixed with stop bars.

5. The multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth as described in claim 4, characterized in that: The outer wall of the gripper is provided with several regularly distributed sliding grooves. The locking block is slidably connected in the corresponding sliding groove. The sliding groove is provided with symmetrical limiting rods on the left and right sides. The limiting rods pass through the corresponding locking blocks and are slidably connected. The outer wall of the limiting rod located below the locking block is fitted with a spring. A tooth blank is provided between two adjacent locking blocks.

6. The multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth as described in claim 5, characterized in that: The front end of the purge tube extends into the air outlet of the inner end of the air inlet tube, and the purge tube and the air inlet tube are coaxially arranged. The purge tube is fixed to the air inlet tube by two vertically symmetrically arranged rods. The position of the air outlet of the purge tube corresponds to the position of the tooth part of the tooth blank.

7. A multi-element synergistic heat treatment strengthening process for improving the wear resistance of alloy carbon steel teeth, comprising the multi-element synergistic heat treatment strengthening equipment for improving the wear resistance of alloy carbon steel teeth as described in claim 6, characterized in that... Includes the following steps: S1. Place the pre-treated tooth blank between adjacent card blocks. After placement, close the sealing door and start the heating chamber for heating. S2. During the heating process, the air in the air cavity expands due to heat and pushes the slide rod forward. Under the action of the push rod and the spiral groove, the rotating rod rotates, which in turn drives the rotating plate to rotate. Then, through the spiral block, the gripper moves radially outward, so that the tooth blank is fixed. S3. After the tooth blank is fixed, maintain the high temperature and start the air pump to pump in the required co-infiltration gas. When the co-infiltration gas is blown out from the air outlet of the air inlet pipe, part of the gas enters the purge pipe and blows towards the tooth surface of the tooth blank, while the other part of the gas blows the baffle plate to slide backward along the outer protrusion, causing the pin to exit the pin hole. S4. After the pin rod exits the pin hole, the gas can blow the fan blade to make the driving tooth drive the driven tooth to rotate, which in turn drives the outer rod to rotate, so that the disc and the chuck rotate synchronously and drive the tooth blank to rotate slowly.

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