359 results about "Shot peening" patented technology

The invention belongs to the application of a computer technology in the field of shot blasting processing, and discloses a shot blasting strength calculation method and system based on control parameters of intelligent shot blasting equipment. According to the method, an intelligent calculation method system is constructed by establishing a prediction model of the control parameters and the shot blasting strength. According to the method, nozzle pressure, moving speed, spraying angle, shot flow and target distance parameters of shot blasting equipment are collected in real time, workpiece material attribute data are combined, a multi-dimensional data fitting algorithm is adopted for processing, and an accurate shot blasting strength value is output. Meanwhile, a self-adaptive parameter adjusting module is developed, and dynamic calculation optimization can be carried out according to residual stress field distribution and coverage rate requirements. Compared with a traditional Almen test piece method, the method achieves real-time calculation of shot blasting strength and closed-loop control of technological parameters, the calculation error rate is reduced to be within 5%, test piece consumption is reduced by 80% or above, machining efficiency and quality stability are remarkably improved, and an innovative solution is provided for intelligent manufacturing in the field of surface strengthening.

The invention discloses a TiAl alloy electron beam selective melting and shot peening strengthening in-situ compounding manufacturing method and device, and relates to the technical field of additive manufacturing. The method comprises the following steps: establishing a three-dimensional digital model of a to-be-printed part, and performing slicing and layering to obtain layered scanning data; under the vacuum condition, TiAl alloy powder is spread on the preheated base plate according to the set thickness, and a powder bed is formed; according to the layered scanning data, scanning and melting the powder bed through a focused electron beam, completing single-layer scanning and melting, completing scanning and melting layer by layer until the part is printed and cooled, and recovering unmelted TiAl alloy powder; and under the vacuum condition, the surface of the printed part is scanned and heated through a defocusing electron beam, TiAl alloy powder is adopted as shot blasting powder, the surface of the heated part is subjected to microparticle shot blasting strengthening treatment, after the treatment is finished, cooling is conducted, scattered shot blasting powder is recycled, and the finished TiAl alloy part is obtained. By means of the collaborative process design of electron beam selective melting and in-situ high-temperature microparticle shot blasting and device integration, the problems that in TiAl alloy additive manufacturing, cracking is prone to occurring, and the strengthening effect is poor are solved.

The invention relates to the technical field of residual stress regulation and control of castings, in particular to a device and a method for regulating and controlling residual stress of a casting after heat treatment. In order to solve the problem that a common method for regulating and controlling the residual stress of the casting after heat treatment is poor in regulating and controlling effect on a stress concentration area or internal residual stress of the casting, the invention provides a device and a method for regulating and controlling the residual stress of the casting after heat treatment. The vibration aging mechanism comprises a vibration reduction platform, an elastic cushion and a vibration exciter, and the elastic cushion is fixed to the upper surface of the vibration reduction platform; the shot peening strengthening mechanism comprises two linear modules, two six-axis mechanical arms and two shot peening assemblies, the two six-axis mechanical arms are fixed to the two linear modules correspondingly, each shot peening assembly comprises a shot peening pipe, and the shot peening pipes are fixed to the tail ends of the six-axis mechanical arms. During use, the vibration aging mechanism and the shot peening strengthening mechanism are used for carrying out synchronous coupling regulation and control on the casting. The regulation and control device is simple in structure and convenient to operate.

The invention provides a method for automatically detecting the coverage rate of a blade part after shot blasting, which realizes objective evaluation and screening of the surface coverage rate of the part based on an intelligent platform, and comprises the following steps: S1, establishing a database for comparison through sample coverage rate calibration; s2, performing shot blasting treatment on the part to form a to-be-detected surface; s3, the part subjected to shot blasting treatment is fixedly arranged in a designated area and transferred to a detection platform; s4, carrying out image acquisition on the shot blasting area of the part by adopting intelligent visual equipment; s5, comparing the acquired image with a calibration picture in a database through image analysis software, and judging a coverage rate value of the part; and S6, re-checking and post-processing the judgment result, and screening out qualified parts. According to the method, the roughness of parts such as blades after shot blasting can be quantitatively detected, and the coverage condition of the parts after surface treatment can be more objectively judged; the detection efficiency can be improved, and the problem of missing detection can be effectively avoided.

The invention provides a shot peening process parameter optimization and generation method and device, equipment and a storage medium. The shot peening process parameter optimization method of a thin-wall component comprises the steps that initial state data of the thin-wall component is obtained; generating a multilayer constitutive model; initial shot blasting process parameters are obtained; a geometric model after shot blasting and residual stress distribution data after shot blasting are predicted through shot blasting simulation; shot blasting forming efficiency is obtained according to the initial shot blasting process parameters; the residual stress gradient uniformity is obtained according to the residual stress distribution data after shot blasting; and optimal shot blasting process parameters are obtained through multi-objective optimization. According to the shot peening process parameter optimization and generation method and device, the equipment and the storage medium, the shot peening forming efficiency and the stress distribution uniformity can be both considered.

The invention relates to the technical field of shot blasting protection, in particular to an aperture-adjustable shot blasting modular protection device and method, which comprises a double-end threaded pull rod, a variable-diameter supporting mechanism positioned on the double-end threaded pull rod, blocking pieces positioned at two ends of the variable-diameter supporting mechanism, and an adjusting piece in threaded connection with the double-end threaded pull rod, the variable-diameter supporting mechanism is used for supporting the inner wall of a hole, and rotation of the adjusting piece is used for adjusting the supporting range of the variable-diameter supporting mechanism. The blocking pieces are detachably connected to the two ends of the variable-diameter supporting mechanism and used for blocking the opening portion of the hole. The variable-diameter supporting mechanism is driven by the adjusting piece to adapt to different hole diameters, various hole types are compatible and adapted, the universality of the protection equipment is greatly improved, and the cost is reduced; disassembly and assembly are convenient and efficient, shot blasting operation auxiliary time is shortened, and machining efficiency is improved; the modular design facilitates independent replacement of damaged parts, the maintenance cost is reduced, and the service life of the device is prolonged.

The invention provides a shot peening inherent strain reverse calculation method and system based on unequal-thickness thin plates. The method comprises the steps that unequal-thickness calibration samples are prepared; technological parameters to be calibrated are selected, and shot blasting is conducted on the calibration sample; measuring the profile of the center line of the shot-blasted surface of the calibration sample after shot blasting; calculating the surface ductility and the bending curvature according to the contour of the center line of the sample; based on the surface ductility and the bending curvature, the inherent strain corresponding to the to-be-calibrated process parameters is reversely solved. According to the method, the inherent strain is reversely solved based on the multi-deformation geometric parameters, compared with an inherent strain reverse solving method based on residual stress, the reverse solving efficiency is higher, the robustness and the accuracy are better, and meanwhile the problem that the inherent strain is reversely solved based on a single deformation parameter is uncertain is solved; and a method support is provided for construction of a shot blasting inherent strain process database.

The invention belongs to the technical field of metal material mechanical property research, and discloses a gear shot peening tooth surface residual stress calculation method and system.The method comprises the steps that a shot speed calculation model in the gear shot peening process is built, shot peening process analog simulation is carried out, and dynamic information of collision between shots and a tooth surface is output; the projectile speed is converted from a machine tool coordinate system to a local coordinate system; establishing a sprayed target plate model and a projectile model, dividing grids, and assembling the grid-divided projectile model and the sprayed target plate model to construct a random multi-shot finite element geometric model; and performing finite element simulation calculation on the random multi-shot finite element geometric model, and outputting residual stress distribution of the gear. According to the method, computational fluid mechanics and a discrete element method are coupled, a high-precision calculation model of the shot speed in the gear shot blasting process is constructed, the forming mechanism and distribution characteristics of the tooth surface residual stress in the actual shot blasting process are effectively reflected, and the method is good in economical efficiency, high in simulation precision, high in process executability and closer to engineering practice.

The invention provides a method for composite manufacturing of a ribbed wallboard structure through friction stir solid phase additive and needleless friction stir, which comprises the following steps: firstly, manufacturing a reinforcing rib structure on a substrate layer by layer through a friction stir additive manufacturing process, and meanwhile, carrying out friction stir treatment on a deposition layer by using a needleless stirring head; therefore, the reinforcing rib generates plastic deformation at the recrystallization temperature, the reinforcing rib and the matrix structure are combined more tightly, meanwhile, the surface roughness of the reinforcing rib is further reduced through needle-free stirring, grains are refined, and the overall strength of the reinforcing rib is improved. And finally integrally forming the part through a shot blasting forming process. According to the method, the problems that a reinforcing rib structure made of dissimilar materials cannot be manufactured through a traditional method, and a ribbed integral wallboard is difficult to integrally form are solved, redundant machining is avoided, the forming cost of the ribbed wallboard structure is reduced, meanwhile, the bonding strength between the reinforcing rib and a base body is further improved through needle-free stirring, and the production efficiency is improved. And the performance of the wallboard structure can be better improved.

The invention discloses a metal dust processing cyclone type wet dust collector and an intelligent control system thereof. The cyclone type wet dust collector for metal dust processing comprises a box body, a multi-stage filtering device, a dust recovery device and an intelligent control device, the box body is provided with an exhaust inlet and an air outlet; a multi-stage filtering device is arranged in the box body and comprises a water curtain filtering area, a spraying pressing area and a water mist separation area which are arranged in sequence; the dust recovery device comprises a sewage treatment tank and an air locking and dust discharging device which are arranged at the bottom of the box body; the intelligent control device is used for monitoring water level, water flow, water pressure, temperature and air pressure difference parameters and automatically controlling the operation state of the system according to monitoring results. The intelligent control system is applied to the dust remover. The dust removal device has the following beneficial effects that through multi-stage filtration and intelligent control, the problems of low efficiency, poor safety, difficulty in maintenance and low automation degree when existing dust removal equipment is used for treating sand blasting and shot blasting dust are solved.

The invention relates to the technical field of metal material strengthening treatment, in particular to a micropitting-resistant wind driven generator gear carburizing and quenching composite strengthening process which comprises the following steps: S1, gear blank pretreatment and surface activation; s2, gradient carburizing strengthening treatment; s3, grain refinement annealing treatment; s4, step quenching strengthening treatment; s5, performing deep cooling and thermal cycle treatment; s6, directional tempering regulation and control treatment; s7, composite shot peening strengthening treatment is conducted; and S8, an antifriction composite film layer is deposited on the surface of the gear subjected to shot peening strengthening in the S7. According to the method, through a synergistic strengthening mechanism of gradient carburization, step quenching, structure regulation and control and surface functionalization, the residual stress distribution and tribological performance are optimized while the high surface hardness of the gear is kept, and the technical problems that in a traditional technology, the carburized layer is concentrated in stress, uneven in structure, single in surface performance and the like are solved.

The invention discloses a method, a device, equipment, a medium and a product for determining a shot peening forming process scheme, and the method comprises the following steps: constructing a geometric part digital model for a target part, applying a corresponding equivalent heat source model to the geometric part digital model at a shot peening path of a current scheme, and carrying out reverse simulation deformation calculation based on a material shrinkage parameter, obtaining a plate part mathematical model; calculating the weight of each node of the digital model based on the part thickness information and the flatness index value of the flat plate part digital model, and returning to the operation of obtaining the current scheme until all the schemes are processed; and according to the flatness index values, a target shot peening forming process scheme is obtained. Starting from the shape of the target part, reverse calculation is carried out through the equivalent heat source model and the shrinkage parameters, and the digital model of the flat plate part can be generated more accurately. Through the flatness judgment method of the weight of the part thickness information, all the process schemes are sequentially processed, the simulation result can be quantitatively evaluated, and the accuracy and reliability of shot peening forming process scheme selection are improved.

The invention belongs to a part surface treatment technology, and relates to an actuator cylinder inner surface ultrasonic impact strengthening device and a use method thereof. Comprising an actuator cylinder upper cover plate (1), an actuator cylinder supporting table (2), an ultrasonic vibration head fastening screw (3), an ultrasonic impact device, an ultrasonic vibration head supporting platform (6), an ultrasonic working rotary table (8), a vertical lifting working table (9) and an ultrasonic strengthening working table base (10). According to the method, only a small amount of shots are consumed and are far less than traditional shot peening strengthening, the machining cost is lower, the dust amount is smaller, and noise is lower. In the strengthening process, a tool and actuator cylinder parts do not need to be moved, all the inner surfaces of the actuator cylinders are strengthened only through rotation of the ultrasonic working rotary table and lifting of the vertical lifting working table, high positioning precision is achieved, and the machining efficiency is remarkably improved.

The present application relates to the technical field of complex shape remanufacturing, in particular to a complex shape remanufacturing method and material for a desulfurization circulating pump impeller, the complex shape remanufacturing method comprising constructing a multi-modal damage intelligent mapping; synchronously preparing plasma activation and micro-texture; performing energy field coupling cladding repair; performing stress field balance shot peening strengthening; implementing gradient coating self-propagating synthesis; performing thermal-mechanical coupling precision shaping; performing micro-gap pressure infiltration sealing; and performing multi-physical field service simulation verification. The present application can significantly prolong the service cycle of key components, comprehensively enhance the comprehensive performance of anti-cavitation and erosion resistance, establish a digital twin closed loop of damage diagnosis, repair optimization and life prediction, and simultaneously realize life cycle cost control and resource saving. Not only can the present application repair failed components, but also can it rebuild a sustainable operation system.

The present invention provides a method for manufacturing a non-stick cooking utensil, the method comprising the following steps: preparing a blank of the non-stick cooking utensil; simultaneously spraying a perovskite material and a ductile metal material onto the blank of the non-stick cooking utensil via different spray guns by means of plasma spraying to form a non-stick coating; and performing shot peening on the non-stick coating to obtain the non-stick cooking utensil, wherein the perovskite material is represented by ABO3, A comprises at least one of alkaline earth metals, B comprises at least one of transition metals, and wherein the elongation at break of the ductile metal material is greater than or equal to 12%. Therefore, by using the plasma spraying method with dual spray guns, a non-stick cooking utensil with effects such as stable material quality, high hardness, high temperature resistance, and long non-stick life can be achieved.

Provided are a technique for manufacturing an aluminum alloy member, i.e., a method for manufacturing an aluminum alloy member, and a shot peening device, whereby the fatigue strength of the aluminum alloy member can be appropriately maintained. This method for manufacturing an aluminum alloy member comprises: a step for preparing an aluminum alloy member comprising an aluminum alloy; and a step for applying residual stress to the aluminum alloy member by performing shot peening on the aluminum alloy member at a speed within the range of 1 m / s to 7 m / s when the aluminum alloy member is in contact with the shot peening member.

The present invention discloses a shot peening system and method for special-shaped workpieces, relating to the technical field of shot peening processing of special-shaped workpieces, wherein the shot peening system for special-shaped workpieces includes a mounting shaft, a shot peening device, a switching mechanism, an image acquisition module and a control module, wherein a support assembly is sleeved on the mounting shaft; the shot peening device is mounted on the support assembly; the output shaft of the switching mechanism is connected to the mounting shaft; the image acquisition module is used to acquire the contour of the special-shaped workpiece; the control module is used to control the switching mechanism to drive the mounting shaft to rotate, and drive the shot peening device to rotate with the mounting shaft through the support assembly; the present invention controls the first shot peening end or the second shot peening end of the shot peening device to face the special-shaped workpiece through the switching mechanism, and uses the first shot material and the second shot material of different particle sizes to respectively perform shot peening on the to-be-processed surface of the special-shaped workpiece, so as to adapt to the different processing requirements of the special-shaped workpiece, ensure the uniformity of the shot peening coverage of the special-shaped workpiece, and improve the flexibility and production efficiency of the shot peening processing.

The invention provides a shot peening simulation test piece fixing device for aero-engine parts, and relates to the technical field of aero-engine manufacturing, the shot peening simulation test piece fixing device comprises a base, the surface of the base is provided with a plurality of first T-shaped grooves, and the plurality of first T-shaped grooves are circumferentially arranged on the surface of the base; the stand columns are vertically arranged on the first T-shaped grooves respectively, and the ends of the stand columns are connected with the first T-shaped grooves in a sliding mode; a second T-shaped groove is formed in the surface of the stand column in the axial direction. Each second T-shaped groove is connected with the corresponding sliding support in a sliding mode; the plurality of stand columns are divided into a first group of stand columns and a second group of stand columns according to use requirements, the rotating support is arranged on the sliding support on the first group of stand columns, the rotating support is rotatably connected with the sliding support, and a test piece placing seat is arranged on the rotating support, so that the position and the angle of a shot blasting simulation test piece are adjusted and fixed. According to the method, the cycle efficiency of design and manufacturing is greatly improved, the economic benefit is improved, and the cost of a product research and development stage is saved.

A method for manufacturing high-strength, hydrogen-embrittlement-resistant bolts based on microsphere shot peening, and the bolts themselves, are disclosed. The manufacturing method includes: S1, cold heading and thread rolling of alloy structural steel billets to obtain bolt forming parts; S2, surface cleaning of the bolt forming parts, followed by overall surface peening with microspheres driven by high-pressure air; after overall peening, targeted strengthening peening treatment is performed on stress concentration areas such as thread roots, undercut grooves, and flange transition corners to obtain reinforced bolt parts; S3, the reinforced bolt parts are cleaned, dried, and phosphated to obtain finished bolt parts. This design, through a "overall + targeted" composite microsphere shot peening strategy, introduces a uniform residual compressive stress field and a micron-level fine-grained plastic deformation layer on the bolt surface, forming a thicker strengthening layer in stress concentration areas, significantly improving the fatigue strength and delayed fracture resistance of high-strength bolts, while ensuring uniform surface roughness and stable assembly friction coefficient.

The invention discloses a high-durability mask system and an application method of the high-durability mask system in mechanical shot peening selective area strengthening, and belongs to the technical field of surface engineering. The invention provides a mask design of a multi-layer composite structure, a precise positioning and fixing system and a special process parameter system. The mask plate adopts a composite structure of the matrix layer, the wear-resistant layer and the anti-fatigue layer, so that the shock resistance and the wear resistance of the mask plate are improved; the positioning system is beneficial to keeping the stability and the repeated positioning precision of the mask plate under the working condition of strong vibration; and the special process parameters are matched and optimized aiming at the application scene of the mask plate. The invention aims to improve key technical problems when a mask shielding method is applied to a mechanical shot peening process, improve the precision and efficiency of selective shot peening strengthening, reduce the comprehensive manufacturing cost, and enable the service life of a mask system and the boundary precision of a selective strengthening region to be generally superior to those of a traditional scheme. And the method has a certain economic advantage while the fatigue performance is improved.

The present application relates to the technical field of high-temperature oxidation-resistant coating, and particularly relates to a modified NiCoCrAlYTa bonding layer and a preparation method thereof.The present application adopts low-pressure plasma gas spraying to prepare a NiCoCrAlYTa bonding layer on the surface of a high-temperature alloy substrate, then performs shot peening treatment to reduce the surface roughness of the coating, then performs Al-Cr co-diffusion, and forms a co-diffusion bonding layer with an outer Al-rich layer, an intermediate Cr-rich layer and an inner NiCoCrAlYTa layer, finally performs vacuum pre-oxidation to form a TGO layer on the surface of the co-diffusion bonding layer, thereby obtaining the modified NiCoCrAlYTa bonding layer.The modified NiCoCrAlYTa bonding layer prepared by the present application has excellent high-temperature oxidation resistance and corrosion resistance, and can realize long-time service.

The present invention relates to the technical field of metal surface treatment, and provides a method for preparing a metal surface oxide film, comprising: performing water jet shot peening on the metal to form a deformation layer on the metal surface; performing surface ultrasonic rolling on the metal that has completed the water jet shot peening to form a gradient lamellar structure based on the deformation layer; detecting and analyzing whether the gradient lamellar structure meets the preset film forming standards, and if so, continuing the film forming process; if not, re-performing the above steps; and reacting the gradient lamellar structure with oxygen to form an oxide film. According to the solution of the present invention, high-strength quenched and tempered steel can quickly produce an oxide layer with good self-lubricity and high stability during the friction process, greatly improving the ability of high-strength quenched and tempered steel to resist friction and wear.

The invention provides a shot peening forming deformation prediction method and system based on three-layer equivalent inherent strain, and the method comprises the steps that the three-layer equivalent inherent strain under preset technological parameters is calibrated based on a calibration sample of a preset size, and the preset technological parameters are technological parameters adopted when a target wallboard is machined; establishing a finite element model of the target wallboard, dividing the finite element model into three layers along the thickness direction of the finite element model, and dividing plane grids; loading the calibrated three-layer equivalent inherent strain to a shot blasting area of the finite element model; and activating the inherent strain field and carrying out elastic analysis to obtain a deformation prediction result. According to the embodiment of the invention, efficient, accurate and universal shot peening forming deformation prediction can be realized.

The invention relates to the technical field of surface strengthening of aeronautical parts, in particular to a shot peening strengthening machining device and method for an internal thread structure of an aeronautical part, and the device comprises a shot peening cover plate, a shot peening gasket, a shot peening plug and other components; the shot-blasting gasket is arranged on the upper end face of the shot-blasting part, the shot-blasting cover plate is arranged on the outer edge of the shot-blasting gasket, a through hole for a spray gun to pass through is formed in the shot-blasting gasket, one end of the rod is connected with the shot-blasting cover plate, and the other end of the rod is connected with a shot-blasting machine workbench; the shot blasting base is installed on a shot blasting machine workbench, the shot blasting plug is installed in a shot blasting part, the shot blasting outer cover is connected with the shot blasting cover plate and installed on the shot blasting machine workbench, and the shot blasting device has the advantages of being good in protection effect, short in remodeling adjustment time and long in service life and can meet the requirement for a multi-variety and small-batch production mode of aeronautical parts. The shot peening strengthening processing method has the characteristics of good shot peening strengthening uniformity, high processing efficiency, wide engineering applicability and stable and reliable quality, and ensures timely delivery of aviation products.

This invention discloses a spring, a spring processing technology, and a vehicle. The spring comprises: a wire substrate with a circular cross-section; an oxide layer covering the surface of the wire substrate; an aluminum-silicon coating covering the outer surface of the oxide layer, wherein the mass percentages of the components in the aluminum-silicon coating are: Al: 80%-92%, Si≥8%, and the remainder being Fe; and an electrophoretic layer covering the outer surface of the aluminum-silicon coating. According to the spring of this invention, by coating the outer surface of the wire substrate with a dense oxide layer, the adhesion of the coating is improved. Furthermore, by coating the outer surface of the oxide layer with an aluminum-silicon coating, the corrosion resistance and high-temperature resistance of the spring are improved. This reduces the occurrence of oxide scale and decarburized layers during the heating process, thereby reducing the need for shot peening to remove surface oxide scale, improving work efficiency, and providing environmental benefits.

The utility model provides an Almen test piece batch shot blasting processing clamping positioning device, which comprises a base disc, a pin rod, a positioning plate and a supporting device, the supporting device comprises a bottom plate and a top plate, the top plate is fixedly connected with the base disc, the bottom plate is fixedly connected with a working table of a machine tool, a first center hole is arranged on the surface of the base disc, and second center holes are arranged on the surfaces of the bottom plate and the top plate. The workbench of the machine tool is further provided with a datum hole, the first center hole, the second center hole and the datum hole are connected together in series through the pin rod, the surface of the base disc is further provided with a guide groove, the guide groove is communicated with the first center hole, the length direction of the guide groove is consistent with the radial direction of the first center hole, and one end of the positioning plate is fixedly connected to a groove opening of the guide groove. And the other end of the positioning plate is used for supporting the Almen test piece. By the adoption of the technical scheme, a plurality of Almen test pieces can be clamped on the surface of the base disc at a time, the clamping and positioning precision of the Almen test pieces on the clamp is improved, and shot blasting treatment results of the Almen test pieces in the same batch are kept highly consistent.

Systems and methods treat sucker rods in a machine through a multi-step process. Initially, sucker rods are cleaned before being conditioned. The conditioning process involves using a defined type and a defined size of media, applied at a first intensity to the rods using first media accelerators (first wheels with a specific diameter and rotational speed, and / or imparting a certain amount of media). The conditioned surfaces are then shot peened at a higher intensity using second media accelerators, which can have larger diameters, faster rotational speeds, and / or can impart a greater amount of media. Both the conditioning and shot peening processes involve reclaiming the media for reuse.

The utility model relates to the technical field of screening, in particular to gravity type shot blasting particle screening equipment. According to the technical scheme, the anti-blocking assembly comprises a vibration spring, a sliding block, a supporting cylinder, a positioning spring piece and an insertion rod, the top of the vibration spring is elastically connected with a screen, the sliding block is fixedly installed at the bottom of the vibration spring, and the sliding block slides up and down on the inner wall of the supporting cylinder; a positioning spring piece is fixedly installed on the inner wall of the supporting cylinder and located below the sliding block, and the inserting rod is fixedly installed on the inner wall of the machine shell. According to the shot blasting machine, when the gravity of the screen and the shot blasting particles is larger than the supporting force of the positioning spring piece on the sliding block, the shot blasting particles are accumulated on the screen, so that the sliding block breaks through the limitation of the positioning spring piece, the rotating range of the screen is enlarged, the screen rotates under the action of gravity, the inserting rods are inserted into the screen holes of the screen, and the shot blasting particles in the screen holes are extruded out; and shot blasting particles are prevented from blocking the screen and affecting screening of the shot blasting particles.

This invention discloses a multi-process synergistic method for strengthening and toughening titanium alloys. The method includes: firstly, pre-treating the titanium alloy surface with sandblasting; then, subjecting the pre-treated titanium alloy to solid embedding carburizing treatment; subsequently, under inert atmosphere protection, sequentially subjecting the carburized titanium alloy to solution treatment, rapid cryogenic treatment, and aging treatment; and finally, shot peening the surface of the heat-treated titanium alloy. This invention solves the problem in existing technologies where a single process is insufficient to synergistically improve the strength and toughness of titanium alloys, achieving a synergistic match between high strength and high hardness on the surface of the titanium alloy material and high toughness in the matrix.

The invention discloses an automobile speed reducer input shaft cold forging blank forming technology which comprises the steps of blanking, spheroidizing annealing, shot blasting, phosphorus saponification, shaping, lower hole and outer circle composite forging, upper hole A forging, upper hole B forging and follow-up heat treatment.By means of the technology, the overall strength of an input shaft can be effectively improved, the mechanical property of the input shaft is improved, and the service life of the input shaft is prolonged. And the use of raw materials is reduced, the material cost is reduced, the processing cost is reduced, and the service life of the mold is prolonged.