38results about How to "Easy to repair welding" patented technology

The invention discloses tempering type 3Cr17NiMo-ESR plastic mold steel. The tempering type 3Cr17NiMo-ESR plastic mold steel comprises, by weight percent, 0.30%-0.40% of C, not larger than 1.00% of Si, not larger than 1.00% of Mn, 16.00%-17.50% of Cr, 0.60%-1.00% of Ni, 0.80%-1.30% of Mo, not larger than 0.020% of S, not larger than 0.035% of P and the balance Fe. The plastic mold steel is pre-hardened till the hardness HRC ranges from 30 to 36. The plastic mold steel is good in acid proofing effect, the mirror finishing performance is excellent, the plastic mold steel is suitable for direct mold milling machining and manufacturing and is especially suitable for making a plastic mold with excellent corrosion resistance and polishing performance, and the plastic mold steel is greatly used for machining molds of high-grade transparent decorations, cosmetics containers, food containers and the like.

The invention provides equipment capable of flexibly detecting air tightness of exhaust manifolds and an application method. The equipment comprises a detection cart, a starter and an alarm. A plurality of vertical and horizontal slide ways are arranged on three faces of the detection cart, and extend inwardly to form a plurality of clamping devices and sealing devices with claws. The clamping devices and the sealing devices are connected with a power device. The tail of the power device penetrates the vertical and horizontal slide ways and move on the vertical and horizontal slide ways. The detection cart is provided with an automatic water injection pipe fitting and an automatic air delivery pipe fitting. The starter and the alarm are arranged on the outer side of the detection cart, andare connected with a control system through sensors. A water tank is arranged on the bottom surface of the detection cart. High-pressure water compression is applied to detect the air tightness of the manifolds, adjustment can be made flexibly according to differences of the detected manifolds, and the equipment has the advantages of visual and obvious detection effect and applicability to various automotive exhaust manifolds.

The invention provides energy-saving equipment for automatic detection of air tightness of exhaust manifolds and a utilization method of the energy-saving equipment. The energy-saving equipment comprises a detection vehicle, a starter and alarm and a water storage pool. Three surfaces of the detection vehicle are provided with a plurality of longitudinal and transverse slide ways, and a pluralityof clamping devices and sealing devices with hook claws extend inwardly from the longitudinal and transverse slide ways. The clamping devices and the sealing devices are connected with power devices,and tails of the power devices penetrate the longitudinal and transverse slide ways and move on the longitudinal and transverse slide ways. The detection vehicle is provided with an automatic water injection pipe fitting and an automatic air delivery pipe fitting, and the starter and alarm is arranged on the outer side of the detection vehicle and connected with a control system through a sensor.The water storage pool is arranged on the right side of the detection vehicle and provided with a circulating water device connected with the detection vehicle. By means of high-pressure compression for detection of air tightness of the exhaust manifolds, the energy-saving equipment is direct and evident in detection effect and high in applicability and is provided with a water circulation systemto play a great role in energy saving.

The invention discloses a repair welding method for a deep groove of a blade casting, which comprises the following steps: firstly, melting a base body of a part by adopting laser welding equipment to carry out backing welding, and under the condition of not filling wires, enabling a base body material of the part to flow towards the bottom of the deep groove after being melted to form a laser welding seam so as to ensure that the bottom of the deep groove of the part is penetrated through and reduce the dilution rate of a base material; due to the fact that the laser welding energy density is high, the width of a heat affected zone is small, and heat input is small, part deformation is reduced, meanwhile, a deep and narrow deep groove in the part is changed into a shallow and wide U-shaped groove, and next-step repair welding of the part is facilitated; then high-frequency argon arc welding is adopted for conducting wire filling cover face surfacing on the U-shaped groove, the enough surfacing size is guaranteed, it is guaranteed that the part has enough machining allowance in follow-up machining after the part is repaired through repair welding, meanwhile, the high-frequency argon arc welding enables electric arc capacity to be concentrated, heat input is low, and a heat affected zone is smaller through superposition of high-frequency current and electric arc contraction; and a welding seam is narrower, deformation and cracking of parts are greatly reduced, and grain growth is inhibited.

The invention discloses a repair welding tool for an oil storage barrel assembly. Two right-angled rods are arranged on the left side and the right side of the front portion of a welding table side by side. Each right-angled rod is composed of a first circular rod and a second circular rod. The upper ends of the first circular rods are welded to the front portion of the welding table. The first circular rods are arranged forwards. The lower ends of the first circular rods and the lower ends of the second circular rods are perpendicularly fixed. The upper ends of the second circular rods are suspended. Circular rods are arranged on the left side and the right side of the top face of supporting square steel side by side and perpendicular to the top face of the supporting square steel; a rectangular frame is arranged between the two circular rods; and the upper ends of the two circular rods are perpendicularly fixed to frame bars at the left end and the right end of the rectangular frame respectively. By the adoption of the repair welding tool, repair welding can be conveniently and rapidly performed on the oil storage barrel assembly, so that circumferential welding between an oil storage barrel in the oil storage barrel assembly and an n-shaped supporting lug is achieved, and insufficient welding is avoided.

The invention relates to a sampling machine. The sampling machine includes a sampling head; the sampling head includes a threaded seat, a rotating seat and a milling cutter; the milling cutter is arranged in the guiding groove of the rotating seat and located on one side of a rotating shaft; the end head of the milling cutter faces toward to the rotating shaft, and the tail end of the milling cutter is deviated from the rotating shaft; the rotating seat controls the milling cutter to rotate around the rotating shaft, and the threaded seat is provided with a conical surface matching the rotating surface of the milling cutter; the conical surface is provided with a thread, and the side, facing toward the conical surface, of the milling cutter is provided with a tooth pattern section; and the milling cutter rotates along the conical surface, and the thread meshes with the tooth pattern section to form a screw-pair structure of a leading screw. Improvement can be performed on the clamping jaw mechanisms of existing electric drills; the milling cutter can be driven to perform forward or reverse rotation around the rotating shaft through the rotation of the rotating seat, and the milling cutter can also perform telescoping movement during rotation, so that micro-damage sampling work can be accomplished; and the sampling machine has the advantages of being simple in structure, convenient in operation, good in stability, flat in sampled part and easy in welding and repairing after taking.

The invention discloses a novel multi-stage centrifugal pump device which mainly comprises a shaft box, a water inlet section, a water outlet section, a middle section, a stuffing box and a perforated rod. A perforated seat used for fixing the perforated rod and a base are not arranged on the water inlet section and the water outlet section, the perforated seat is arranged on the shaft box or the perforated rod is fixedly welded to the water inlet section and the water outlet section, a main body of the stuffing box is segmented from a cooling device, and therefore the surface smooth finish is high. The invention further discloses a manufacturing method of the novel multi-stage centrifugal pump device, and parts which do not make contact with corrosive media are made of cast iron materials instead of stainless steel materials. The novel multi-stage centrifugal pump device mainly aims at a multi-stage centrifugal pump made of the stainless steel materials, and on the basis of achieving the same effects, the novel multi-stage centrifugal pump device and the manufacturing method have the advantages of precisely manufacturing, saving the cost, improving the efficiency and reducing energy and resources.

The invention provides a repairing welding tool. The repairing welding tool comprises a base, a first locating mechanism and a second locating mechanism. The first locating mechanism and the second locating mechanism are oppositely arranged on the base. Te first locating mechanism comprises a first support, a rotating unit and a brake unit. The rotating unit and the brake unit are both arranged onthe first support. The brake unit is used for limiting the rotating unit from rotating. The second locating mechanism comprises a second support and a support unit. The second support is arranged onthe base. The support unit is arranged on the second support. According to the repairing welding tool, when the rotating unit rotates, a workpiece fixed to the rotating unit can be driven to rotate; when repairing welding is required, a worker does not need to crouch or change positions for working around the tool and only needs to rotating the rotating unit, and rotary adjustment can be conductedon the position needing repairing welding; and the worker can conduct reparing welding conveniently.

The invention discloses a method for repairing a roller head for rock wool production. The method comprises the following steps of taking out a damaged roller head, cutting off defect parts of the roller head and a roller neck of a roller, polishing and cleaning an end face, inserting the roller head and the roller neck into a pouring mold sand box, preheating the parts of the roller head and theroller neck, which need to be welded, pouring molten iron into the pouring mold sand box, welding the roller head and the roller neck, and after the molten iron is poured and cooled to the normal temperature, completing welding between the roller head and the roller neck; and conducting repair welding and polishing treatment on the parts with the welding defects through welding and polishing equipment. According to the method, through cutting off the defect parts of the roller head and the roller neck firstly, polishing and cleaning the end face, and then conducting pouring and welding betweenthe roller head and the roller neck in the pouring mold sand box, firm connection between the roller head and the roller neck is guaranteed; and meanwhile, repair welding treatment is conducted on the connecting position through the welding and polishing equipment, so that the repair rate of the roller is high, and the repair effect is good.

The invention belongs to the technical field of nuclear power station maintenance optimization, and particularly relates to a nuclear power station BOSS head welding seam detection method, system and equipment and a medium. The nuclear power station BOSS head welding seam detection method comprises the steps that a control array probe scans a main body welding seam from a mother pipe side to obtain a first detection waveform of the main body welding seam; a phased array probe scans a root weld of the BOSS head weld to obtain a second detection waveform of a root weld area; the phased array probe scans a top welding seam of the BOSS head welding seam to obtain a third detection waveform of the top welding seam; a preset comparison waveform is acquired, the preset comparison waveform is compared with the first detection waveform, and a first defect value of the main body welding seam is determined; the preset comparison waveform is compared with the second detection waveform, and a second defect value of the root welding seam is determined; and the preset comparison waveform is compared with the third detection waveform to determine a third defect value of the top welding seam. According to the nuclear power station BOSS head welding seam detection method, the detection precision of the nuclear power station BOSS head is improved.

The invention provides a weld joint detection device and method, and relates to the technical field of weld joint detection, the weld joint detection device comprises a rack, a side sealing assembly,an air supply pressure measurement assembly and an upper sealing assembly, and a limiting block is arranged on the rack; the side sealing assembly is arranged on the side, away from the limiting block, of the rack and used for blocking a side opening of the weldment, and an air supply channel is formed in the side sealing assembly; the air supply pressure measurement assembly is connected to the side sealing assembly, and a pressure detection element is arranged on the air supply pressure measurement assembly; the upper sealing assembly is arranged on the rack, and the lower end is used for sealing an upper opening of the weldment. According to the weld joint detection device, the upper sealing assembly is used for blocking the upper opening of the weldment, the side sealing assembly is used for abutting against the side face of the weldment, air is supplied into the hole channel through the air supply pressure measurement assembly, and whether the weld joint leaks gas or not is accurately judged by detecting the pressure value in the hole channel; the welding quality of the weldment can be conveniently detected in the initial welding stage of a large component, the weld joint detection speed is increased, and repair welding can be conveniently conducted in time.

The invention discloses a river point welding auxiliary device which comprises a base with the transverse cross section shaped like a Chinese character 'ao'. A transversely-arranged limiting groove isformed in the base. A first spring is fixedly connected to one side wall of the limiting groove. A movable sleeve is fixedly connected to one end of the first spring. A positioning pin is inserted into the movable sleeve. A Y-shaped block is fixedly connected to one side of the positioning pin. A driving device is arranged on the Y-shaped block. Due to the mutual effect of a corrugated pipe, a point welding pipe and other structures, when a column just makes contact with a beam, preliminary welding is achieved, workers can achieve follow-up repair welding, the device relies on river as motivepower, and use is more environmentally friendly and scientific.

The invention relates to a sampling device and a sampling method. The sampling device includes a sampling machine and a fixing rack; the sampling machine includes a sampling head and a rotary driving mechanism; the rotary driving mechanism is arranged on the fixing rack; and the fixing rack is arranged on a connecting mechanism used for fixedly connecting with a to-be-sampled component; the sampling head includes a threaded seat, a rotating seat and a milling cutter; the rotating seat is in transmission connection with the rotary driving mechanism; the milling cutter is arranged in the guiding groove of the rotating seat; the threaded seat is provided with a conical surface; the milling cutter surface is provided with a tooth pattern section; and the tooth pattern section meshes with the thread of the conical surface to form a screw-pair structure of a leading screw. The fixing rack can stably fix the sampling machine on the component; a cutting edge can perform telescoping and moving when rotating around a rotating shaft; and thus, micro-damage sampling can be realized, and the device and method have advantages of being simple in structure, convenient in operation, good in stability, flat in sampled part and easy in welding and repairing after taking.