144 results about "Induction hardening" patented technology

The invention relates to the technical field of manufacturing of engineering machinery parts, and discloses an engineering machinery driving wheel made of a medium carbon alloy cast steel material. The invention also discloses a preparation process of the engineering machinery driving wheel material, which comprises the following steps: S1, casting treatment: melting the medium carbon alloy steel material, and casting into a driving wheel blank; s2, normalizing heat treatment: carrying out normalizing heat treatment on the driving wheel blank; s3, rough machining treatment; s4, quenching treatment: carrying out induction quenching treatment; and S5, finish machining treatment. The synergistic effect of alloy elements in a medium carbon alloy cast steel material is combined with an optimized air cooling process, so that the cast steel is normalized to obtain a uniform structure which mainly contains superfine pearlite and contains extremely little ferrite, the matrix hardness is stable, and the requirement of a high-performance driving wheel is completely met; after the process route is improved, tempering and shot blasting and flaw detection procedures after tempering are canceled; the technological process is greatly shortened, material turnover is reduced, and the production efficiency is improved.

The invention relates to the technical field of metal surface heat treatment, and discloses a fixed inductor for high-speed rail axle surface induction quenching, which comprises a busbar, a fixed plate, a cooling water sprayer and an effective geometry heating ring, the busbar is used for fixing the effective geometry heating ring and forms an electrifying passage and a water passing passage with the effective geometry heating ring with the hollow structure; the effective geometric body heating ring comprises three sections of straight section induction pipe bodies with different lengths and two sections of arc induction annular bodies, the straight section induction pipe bodies are arranged according to the lengths D1, D2 and D3, the straight pipe section D1 and the straight pipe section D2 are in arc transition through an R1, the straight pipe section D2 and the straight pipe section D3 are in arc transition through an R2, and the three straight pipe sections are parallel to one another and progressive inwards layer by layer; and the radians of the two sections of arc induction annular bodies are 90 degrees. According to the invention, one-time and global synchronous induction heating can be carried out on multiple sections of shaft necks and transition R-angle areas with complex geometrical shapes and obvious stress concentration at the two ends of the axle.

The invention relates to the technical field of machining and manufacturing of rail transit machinery, and discloses full-automatic equipment for induction quenching of the surface of a high-speed rail axle, which comprises a feeding workbench, a loading and unloading device, a vertical quenching machine tool, a dynamic adjustable spray quenching device, a tempering transmission device, a safety protection device and a main control electric cabinet, the middle scanning type induction quenching device and the two-end fixed type induction quenching device are arranged on the front side and the rear side of the axle vertical jacking device respectively. Automatic feeding and discharging and accurate positioning of the axle are achieved through the feeding and discharging device, and full-automatic heat treatment of axle surface quenching is achieved in combination with the vertical quenching machine tool and the multiple induction quenching devices in the vertical quenching machine tool. According to the equipment, the problems of low efficiency, unstable axle clamping position precision, unstable product quality, high manual labor intensity and the like caused by manual operation are effectively solved, and the production efficiency, the product percent of pass and the quality stability are remarkably improved.

A method for induction quenching and leaving a soft zone for ultra-long machine tool guide rails is described. This method is suitable for machine tool guide rails that are prone to cracking at the initial end after quenching or require machining (such as milling or drilling). The method belongs to the field of heat treatment technology. The method includes the following steps: aging, machining, stress relief, medium-frequency induction quenching, and tempering the ultra-long guide rails. The medium-frequency induction quenching utilizes two inductors: one preheating inductor and one quenching inductor. The two inductors are spaced 15-20 mm apart, and the distance between the inductor surface and the quenching surface is 4-6 mm. Heating and quenching begin at a point more than 20 mm from the edge of the machine tool guide rail at the initial end of the quenching process. After this quenching process, the hardness of the quenched area of ​​the guide rail reaches 55-60 HRC, the layer depth reaches 5.0-7.6 mm, and the soft zone length is 20-25 mm. The soft zone still retains the original hardness of the cast iron.

The invention relates to a heat treatment process of a bearing ring with high impact resistance, which comprises the following steps: step 1, pretreatment: quenching and tempering the bearing ring by adopting a mesh belt type heat treatment furnace, and carrying out quenching in five regions in sections; 2, medium-frequency heat treatment: 1) an induction heating process: heating in an inner induction coil oscillation mode; and (3) the bearing ring in the step (2) is overturned by 180 degrees and then placed into the induction heating device again, the step (1) and the step (2) are repeated, and the method is completed. The method has the advantages that the depth of the induction quenching layer of the ferrule is optimized, an effective gradient buffer area is ensured to be formed, and the stress distribution uniformity under the impact load is enhanced; surface layer hardness, secondary surface layer hardness distribution and core hardness distribution are optimized, and wear resistance and crack resistance are both considered; a set of standardized heat treatment parameter windows (including heating power, time, cooling mode and tempering system) is formed, and the fracture rate of an optimized sample piece is reduced by more than 50%.

The invention relates to the technical field of spindle processing, and discloses a spindle full-automatic heat treatment process, which comprises a spindle and comprises the following specific operation steps: 1, carrying out heat treatment on the spindle; preparing a picking spindle; the picking spindle comprises a picking spindle head, a picking spindle rod and a picking spindle gear, the picking spindle rod is connected with the picking spindle gear and the picking spindle head to form a whole, picking spindle teeth are arranged outside the picking spindle head, the picking spindle moves to the full-automatic heat treatment production line through the clamp, the clamp is arranged on the production line track, and the production line track drives the clamp to move into the heating device. The heating device is used for heating the picking spindle to 920 DEG C; the picking ingots are conveyed through a rail, the heating device, the carburizing device, the oil quenching equipment and the induction quenching device are arranged on the same rail, full automation during structure production is ensured, meanwhile, in the carburizing process, a gear is rotated, a gear sleeve is controlled to rotate, and it is ensured that the picking ingots are kept uniform during overall heating and carburizing; and defective products caused by uneven carburization are effectively avoided, and the production effect is improved.

The invention provides a cylindrical workpiece induction quenching device which comprises a first clamping mechanism and a second clamping mechanism which are fixed to a rack, arranged in the vertical direction and used for fixing the two ends of a workpiece. The first clamping mechanism and / or the second clamping mechanism can generate axial tension on the workpiece; and the induction heating mechanism is arranged on the rack and used for heating the workpiece. According to the technical scheme, the bending amount of the workpiece can be reduced in the heat treatment process of the workpiece, and therefore the service life of the workpiece is prolonged.

This invention discloses a dual-frequency composite induction strengthening process for medium carbon steel, gradient hardened layer parts, and a production system. The process includes: selecting SAE 1045 medium carbon steel and performing quenching and tempering pretreatment; precision machining to form outer circular channels and inner ball channels; performing dual-frequency composite induction hardening on the outer circular channels and inner ball channels respectively, i.e., preheating to 680-750℃ with medium-frequency current, then rapidly heating to 880-920℃ with high-frequency current followed by spray cooling, and using thermal balance control to form a gentle transition zone with a width of 2-5mm between the two hardened zones, where the hardness gradient along the axial line connecting the two hardened zones does not exceed ΔHRC10 / mm; finally, low-temperature tempering. This invention also discloses wear-resistant parts with a dual-layer composite hardened layer structure and a gradient transition zone prepared using this process, as well as an online composite strengthening production system. This invention replaces low-carbon alloy steel with medium-carbon steel and replaces overall carburizing with local dual-frequency induction hardening, which can reduce raw material costs and energy consumption, reduce deformation, and obtain a hardened layer that meets the depth requirements, thus realizing online continuous production of heat treatment and machining.

The application discloses a composite modification process of a high-toughness wear-resistant cutter ring for a shield tunneling machine, and comprises the following steps: step one, a medium-carbon alloy steel material is used as a cutter ring base body, and a blank is prepared by using a hot forging process; step two, the blank obtained in the step one is subjected to carburizing quenching treatment, and then is subjected to oil cooling; step three, the cutter ring after the oil cooling in the step two is subjected to high-temperature tempering treatment, so that unstable martensite after quenching is completely converted into tempered martensite; step four, the cutter ring after the high-temperature tempering in the step three is subjected to surface induction quenching; step five, the cutter ring after the induction quenching in the step four is subjected to low-temperature tempering treatment; and step six, the cutter ring after the low-temperature tempering in the step five is subjected to surface layer ultrasonic impact modification, so as to obtain a composite modified cutter ring. The application uses heat treatment processes such as carburizing and nitriding and ultrasonic impact modification, and constructs a gradient structure cutter ring, so that the cutter ring has high wear resistance, buffer resistance and impact toughness.

The invention relates to a high-nitrogen stainless steel tapered roller bearing outer ring induction quenching device and method, and belongs to the technical field of heat treatment.The high-nitrogen stainless steel tapered roller bearing outer ring induction quenching device comprises a rack and an inductor arranged at the lower end of the rack, the inductor is in a conical ring shape, and the inductor is arranged in a tapered roller bearing outer ring and used for quenching a roller path in the tapered roller bearing outer ring; a conical annular groove facing the roller path is formed in the outer surface of the inductor, the conicity of the conical annular groove is the same as that of the roller path, a liquid spraying device used for spraying quenching liquid is arranged at the lower end of the inductor, and the liquid spraying device can spray the quenching liquid to the roller path. The induction quenching device can solve the problems that due to an existing induction quenching device, the shape of the hardened layer of the outer ring raceway of the tapered roller bearing is different in depth, and the intermediate metallographic structure of the outer ring raceway of the tapered roller bearing is overheated.

This invention discloses a continuous induction hardening device for sprockets, belonging to the field of hardening technology. It includes a hardening frame filled with coolant; a hardening section installed inside the hardening frame for induction heating of the sprocket; and a loading section installed at the bottom of the hardening frame for picking up and feeding the sprocket. In this device, the induction coil is curved to match the arc-shaped tooth profile of the sprocket. The upper and lower effective heating sections correspond to the upper and lower tooth roots, respectively. The heat source preferentially acts on the thicker part of the tooth root, ensuring sufficient heat input. Simultaneously, a rotary motor drives the sprocket to rotate. For sprockets with greater thickness, a side coil can be added to assist in heating the tooth sides, avoiding the problem of overheating in the main heating zone and insufficient heating of the side walls. This improves upon existing circular induction coils where the tooth tip heating rate is much faster than the tooth root during hardening, effectively reducing the risk of hardening cracks caused by the significant difference in heating rates and improving the quality of the finished sprocket.

The utility model discloses an induction quenching device for a carbon steel cold-punched metal part, which relates to the field of industrial part processing equipment and comprises a device shell, an operation opening is arranged on one side of the device shell, a quenching device is arranged in the device shell, and a control device is arranged at the bottom of the quenching device. The control device comprises a supporting bottom plate, a connecting opening is formed in the supporting bottom plate, and a connecting plate is arranged on one side of the supporting bottom plate. The metal piece main body is placed downwards from the center of the electromagnetic quenching ring, so that the bottom of the metal piece main body falls into the connecting opening, and the preparation work before quenching can be easily completed. Due to the design, the placing process of parts is greatly simplified, an operator can quickly carry out quenching work without complex operation skills, the operation convenience is remarkably improved, and the working efficiency is improved.

The utility model relates to the technical field of induction quenching, and discloses a high-frequency quenching induction system which comprises an automatic induction quenching mechanism, the automatic induction quenching mechanism comprises a feeding assembly, a positioning assembly, a taking and placing assembly and an induction quenching assembly, the feeding assembly is used for conveying workpieces to a conveying belt, the positioning assembly is used for positioning the workpieces, and the taking and placing assembly is used for taking and placing the workpieces; a first conveying assembly and a second conveying assembly are arranged on the second bottom frame, the first conveying assembly is located on one side of the induction quenching assembly, and the second conveying assembly is located on the other side of the induction quenching assembly; the second conveying assembly penetrates through the induction quenching assembly and is matched with the first conveying assembly to convey the workpiece to the induction quenching assembly, and the induction quenching assembly is used for induction quenching of the workpiece. According to the utility model, the workpiece is subjected to induction quenching, the hardness and wear resistance of the workpiece are improved, the service life of the workpiece is ensured, the whole induction quenching process does not need manual operation, the quenching efficiency is improved, and the problem of environmental pollution caused by salt bath furnace quenching is solved.

The present application relates to the crankshaft machining process of cold header, belongs to the steel processing technical field.The crankshaft machining process of cold header disclosed by the present application has the following specific steps: raw material is firstly subjected to forging-normalizing-rough turning-quenching and tempering-precision turning-coarse grinding-induction hardening-milling-drilling-nitriding treatment-shallow cooling treatment-low temperature tempering-precision grinding to obtain the product.The induction hardening step makes the material generate the microstructure with acicular martensite as the hardened layer and tempered sorbite as the matrix, the surface forms the nitriding layer after the nitriding treatment, and the precipitation of carbide is improved through the shallow cooling treatment and low temperature tempering, the material microstructure is regulated through each step, and finally the crankshaft component with the combination of high surface strength and high internal toughness is obtained, which exhibits excellent wear resistance and high fatigue strength.

This technology improves the manufacturing efficiency of steel materials by enhancing cold forgeability and increasing the efficiency of high-frequency induction hardening while ensuring the necessary strength. [Solution] The steel material has a chemical composition comprising C: 0.30% to 0.45%, Si: 0.01% to 0.30%, Mn: 0.01% to 1.10%, Ni: 0.01% to 0.60%, Cr: 0.01% to 0.60%, Ti: 0.060% or less, and B: 0.0030% or less, with the remainder being Fe and unavoidable impurities, and has a cylindrical shape with radius r, and the hardness at a depth of r / 2 radially from the surface of the cylindrical shape is 185 HV or less, and the tensile reduction value obtained in a tensile test is 50% or more, and the ratio of the depth t from the side surface where the hardness is 400 HV to the radius r is 0.30 or less.

A shaft rod workpiece deformation limiting mechanism assembly of a shaft rod type induction quenching machine tool belongs to the field of heat treatment equipment and comprises a lead screw, one end of the lead screw is in threaded connection with a lead screw nut, an optical axis part of the lead screw is arranged in a through hole of a fixing plate in a penetrating manner, and the other end of the lead screw extends out of the through hole; the lead screw supporting seat is fixed at the end part of the through hole of the fixed plate, a bearing which is axially limited is arranged in the lead screw supporting seat, and the lead screw penetrates out of the bearing; the roller mounting seat is relatively and fixedly connected with the fixing plate, and a pair of freely rotating rollers is arranged at one end, deviating from the lead screw nut, of the roller mounting seat side by side; the position adjusting plate is provided with a vertical plate surface and a horizontal plate surface, the vertical plate surface is used for being connected with the shaft lever type induction quenching machine tool, the horizontal plate surface is used for being fixedly connected with the fixing plate through bolts, a bolt connecting hole in the horizontal plate surface or the fixing plate is an adjusting long hole, and the length direction of the adjusting long hole is parallel to the lead screw. The deformation limiting device can meet the deformation limiting capacity of different types of shaft rod workpieces under the complex quenching working condition.

1. The name of the design product: machine tool protective cover. 2. The use of the design product: the design product is used for the induction quenching machine tool protection. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view. 5. The bottom of the design product is not easy to see or not visible during use, omit the top view.

Essentially, an invention deals with a method for performing a process on a part. (P) which is made from a group of ferrous metals consisting of: The nitriding action that forms on the part(P) is a composite layer(2) of considerable thickness. Between 5 and 30 micrometers and the diffusion area (3) which is located below and Contact with the composite layer (2) with a thickness between 100 micrometers and 500 micrometers; Next, The operation of wet hardening of part (P) by induction at high frequency throughout. A deep induction hardening of 0.5 mm or more is required for this process. The part (P) and it is to make that part (P) have: Surface hardness greater than or equal to 50HRC. Hardness of the aggregate layer (2) greater than or equal to 400HV0.0s, The hardness of the part is greater than or equal to 500HV0.05 at a depth of 500. micrometer, And since the high-frequency induction hardening process is performed without... Apply a protective film to the part (P) before induction hardening. The invention also involves a part (P) which is made of ferrous metals. Significant resistance to wear by abrasion and adhesion; possesses friction properties. And it has improved scratch resistance and excellent corrosion resistance;

The utility model discloses a detachable external tooth induction quenching device which comprises an upper cover ring plate and a lower cover ring plate which are oppositely arranged, a copper plate coil and a water baffle are arranged between the upper cover ring plate and the lower cover ring plate, the copper plate coil is arranged on the inner side of the water baffle, and clamping grooves are formed in the inner sides of the upper cover ring plate and the lower cover ring plate. Two parallel busbars are arranged in the clamping groove in a clamped mode, the two ends of the copper plate coil are fixedly connected to the busbars in a welded mode respectively, the two ends of the water baffle are connected to the busbars in an insulated mode respectively, a plurality of spraying holes are formed in the copper plate coil in an arrayed mode, and a water storage cavity is defined by the upper cover ring plate, the lower cover ring plate, the water baffle, the copper plate coil and the busbars at the two ends. A plurality of quick connectors communicated with the water storage cavity are arranged on the upper cover annular plate, and the upper cover annular plate and the lower cover annular plate are detachably connected in a locking mode through first bolts. The detachable external tooth induction quenching device is simple in structure, convenient to detach and capable of being detached, cleaned and maintained at any time, and the service life is prolonged.

The invention discloses a high-frequency induction quenching method for a guide rail. The method comprises the following steps that firstly, the depth of a full decarburized layer of the guide rail is measured and removed, then the guide rail is subjected to high-frequency induction quenching treatment and tempering treatment, and finally, the depth of an effective hardened layer of the guide rail subjected to heat treatment is measured and metallographic detection is conducted. By means of the guide rail induction quenching method, the heat treatment efficiency of the guide rail can be remarkably improved, a high-hardness and evenly-distributed hardened layer is obtained on the surface of the guide rail, the surface hardness is 700 HV or above, the effective hardened layer depth is larger than 2 mm, the guide rail is small in deformation, the core of the guide rail keeps excellent strength and toughness, and the size consistency and impact resistance of the guide rail are guaranteed.

The present application belongs to the field of heat treatment device, and relates to a double-inductor device suitable for induction quenching of right-angle surface cast iron guide rail. The device comprises a preheating inductor and a quenching inductor, and the preheating inductor is fixedly connected with the quenching inductor. The preheating inductor comprises a preheating inductor connecting row, and preheating inductor water nozzles are arranged on both sides of the preheating inductor connecting row. The preheating inductor connecting row is fixedly connected with a preheating inductor fixed plate, the preheating inductor fixed plate is fixedly connected with a preheating inductor support, a preheating inductor induction coil is fixedly arranged on the preheating inductor support, a preheating inductor magnet is fixedly arranged on the preheating inductor induction coil, the preheating inductor induction coil comprises a first preheating inductor coil and a second preheating inductor coil, and the first preheating inductor coil and the second preheating inductor coil are connected perpendicularly. The two inductors are used in cooperation, the depth of the hardened layer of the guide rail is increased, and the device is particularly suitable for induction quenching of the position of the right-angle guide rail of the machine tool cast iron.

The utility model provides a hydraulic valve core induction quenching waste cooling liquid discharging device which comprises a water tank, the bottom of the water tank is an inclined plane, a strip-shaped opening is formed in the lowest point of the inclined plane, a bottom box used for gathering metal slag is arranged under the strip-shaped opening, the bottom box is fixedly connected with the water tank, and the bottom box is connected with the water tank. A detachable bent pipe used for being connected with a water pump is installed at the bottom of the bottom box, a partition plate is arranged on the upper portion in the bottom box, two supporting rods are symmetrically installed on the lower surface of the partition plate, the lower ends of the supporting rods make contact with the bottom in the bottom box, a V-shaped groove is machined in the upper surface of the partition plate, and a plurality of vertical holes are formed in the V-shaped groove. The quenching device has the following beneficial effects that the consumption of quenching liquid and water is reduced, the discharge of waste liquid is reduced, and the production cost is reduced.

The utility model relates to the technical field of induction quenching, in particular to an integral inductor for heat treatment of a long-handle inner ball cage, which comprises an inductor body, a rotary drum and a fixing component, the inductor body comprises a working section and a fixed section, the shape of an inner cavity of the working section is consistent with that of a workpiece, the working section is composed of a copper pipe and a magnetic conductor, a rotating cavity is formed in the fixed section, an extrusion groove is formed in the rotating cavity, and a rotating cylinder is rotationally installed in the rotating cavity; a mounting groove is formed in the rotary drum, the mounting groove penetrates through the rotary drum, a fixing assembly is arranged in the mounting groove, the fixing assembly is used for fixing the handle end of a workpiece, overall synchronous quenching is achieved through the overall inductor, the machining efficiency is improved, meanwhile, the unification of the machining rotating speed and the fixing effect is achieved through the fixing assembly on the rotary drum, and the machining efficiency is improved. And the quenching stability is guaranteed, and the machining quality is improved.

This invention discloses a lightweight manufacturing method for axles with built-in axle boxes, belonging to the field of rail transit axle technology. Based on the existing axle box-integrated alloy steel quenched and tempered axle design, this invention enlarges the central through-hole of the axle; then, the axle surface undergoes induction hardening treatment; followed by tempering treatment and grinding of the axle end faces and outer surfaces. This invention enables lightweight axle design and manufacturing, reducing the overall axle weight by 96.2 kg. The induction hardening treatment of the axle surface in this invention improves surface hardness and strength, enhancing resistance to external impacts and wear; the introduction of residual compressive stress on the axle surface can prevent or inhibit crack propagation; therefore, the method of this invention can achieve lightweighting while improving the axle's overall service life safety.

The invention discloses induction heat treatment high-carbon gear steel, and belongs to the technical field of machine manufacturing. The gear steel comprises the following chemical components in percentage by mass: 0.705%-0.995% of C, 0.5%-2.5% of Si, 0.1%-0.5% of Cr, 0.010%-0.3% of Mo, 0%-0.3% of Cu, 0%-0.2% of V, 0%-0.02% of Ti and O < lt >. 30 ppm, S < lt >; 0.025%, P < lt >; 0.025%, and the balance being Fe. The material is subjected to vacuum melting to obtain a cast ingot, then the cast ingot is heated to 1050-1100 DEG C for complete austenitizing and heat preservation to achieve alloy component homogenization, then the cast ingot is continuously forged into the needed size in the cooling process, and the final forging temperature is controlled to be 850-900 DEG C. The forge piece is heated at 780-820 DEG C, subjected to heat preservation for 1-8 hours, cooled to 600 DEG C at the cooling speed of 20 DEG C / min and then discharged out of a furnace, and a structure with spherical cementite distributed on a ferrite matrix can be obtained; or heating and normalizing at 850 DEG C to obtain a pearlite structure. After induction quenching, the surface hardness of the steel plate can reach 62-64 HRC, and the depth of a hardening layer is 0.5-5 mm. The surface structure is characterized by comprising carbide with the average size of 0.3-0.6 mu m, martensite with the length of 0.5-2 mu m and a fine grain structure with the length of 7-15 mu m.

The invention relates to the technical field of machine manufacturing, and discloses a gear tooth groove induction quenching ball head dynamic angle guiding device, which comprises a fixed seat, a mechanical arm, a mounting seat and a plurality of ball heads, a servo motor drives a thread roller to rotate and is combined with cooperative control of the mechanical arm to adjust the positions of the ball heads, different helical angles can be adapted, automatic angle adaptation is realized, and the angle of the ball heads is adjusted. The ball head adopts a special curvature design and can be automatically switched to adapt to tooth grooves with different depths through a contact area, a first movement disc and a second movement disc in an assembly cylinder and an oil system form a buffer mechanism, oil flows between the movement discs through flowing holes, stable damping is provided, contact chattering is avoided, contact force changes are transmitted to a pressure sensor through a feeler lever, and the pressure sensor is in a closed state. The control system adjusts the oil amount through the oil pipe, large-range positioning of the mechanical arm and fine regulation and control of the assembly are matched, micron-order precise control over the contact force is achieved, the device can be automatically adjusted and dynamically respond to thermal deformation of the gear ring, the adaptability is high, and the overall production quality and efficiency are improved.

Disclosed herein is an example track block (112) having a ground contact portion (202) for use in a track-based machine (100) to advance and support the machine (100) on a support surface. The track blocks (112) may be track blocks (112) that form links of a chain that forms a track (102) of a track-based machine (100). The track block (112) includes a cast body (114) formed from a first alloy steel having a first strength and toughness. The track block (112) includes a raceway (116) that contacts a roller (502) of the track-based machine (100). The raceway (116) is hardened by an induction hardening process to achieve a level of hardness at a depth of 32 mm or greater from the surface of the raceway (116). The raceway (116) is shaped and positioned to contact a roller (110) of the track drive assembly and thus reduce wear and fatigue on the track shoe (112) due to contact and force transmitted through the roller (502).

The application discloses a kind of assembled plum blossom head roller and preparation method thereof, the field of roller manufacturing technology, plum blossom head is stepped cylinder, the end face of roller main neck is provided with and plum blossom head stepped cylinder is matched with stepped cylindrical hole, the big end cylinder of plum blossom head is provided with plum blossom groove, bolt through hole is provided in each plum blossom groove side end face, and plum blossom head is connected to main neck by bolt.The application is fixed and connected by key, interference fit, high-strength bolt and other various connection modes to connect plum blossom head and the end face of main neck, ensure the connection strength, plum blossom head uses alloy forged steel material, plum blossom groove arc surface has higher hardness after induction quenching, improve wear resistance, so as to reach the same life as roller body, and the method of the application can also be applied to the repair of plum blossom head wear of original integral plum blossom head roller, avoid resource waste, prolong the use time of original roller.

The application provides a slider induction hardening device, which comprises a rack, a feeding conveying line arranged on one side of the rack and used for conveying the slider from a feeding end to a discharging end, a clamping tool fixedly arranged on the rack and located on the side of the feeding conveying line close to the discharging end and used for vertically clamping and fixing the slider, a transfer mechanism arranged on the rack and used for sequentially transferring the slider at the feeding end to the clamping tool, and an induction hardening mechanism comprising a lifting device and an inductor, wherein the inductor is arranged on the front side of the clamping tool, and the lifting device is arranged on the rack and used for driving the inductor to move up and down to enter the inside of the slider and harden the inner wall of the rolling groove of the slider. The induction hardening mode of the application has the advantages of short process cycle, energy saving and environmental protection, and the inductor only hardens the position of the inner wall of the slider which needs to be hardened, so that the strength of the inner wall of the slider after being hardened can be ensured, and large deformation caused by hardening can be avoided.

The invention relates to the technical field of alloy steel surface strengthening, in particular to alloy steel and a surface strengthening processing method and application thereof, the alloy steel is quenched and tempered to obtain quenched and tempered alloy steel, the quenched and tempered alloy steel is processed into a sample, the sample is subjected to induction quenching, and the sample is put into a water-based quenching liquid to be cooled to the room temperature after induction quenching. A surface hardened layer strengthened sample is obtained; the method comprises the following steps: taking alloy steel as a research object, carrying out surface hardening treatment on the sample, cutting out a surface hardening part of the surface hardening layer strengthening sample, carrying out pipe sealing treatment, and carrying out secondary tempering treatment on the sample subjected to the pipe sealing treatment to obtain the surface-strengthened alloy steel, so that efficient and uniform surface hardening is realized by taking the alloy steel as the research object and carrying out surface hardening treatment on the sample; and the surface hardness, the wear resistance and the fatigue strength are obviously improved.