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

The invention belongs to the field of welding technology, and relates to a solder used for casting defects of a K418B superalloy guide and a repair welding method; the solder composition and mass percentage are: C: 0.03-0.07; Cr: 21.5-24.0; Nb: 3.2-4.2 ; Mo: 8.5~10.5; Ti: 0~0.5; Al: 0~0.5; P: ≤0.015; S: ≤0.015; O: ≤0.015; N: ≤0.01; Frequency pulse argon arc welding technology, supplemented by pre-weld preheating, post-weld slow cooling and post-weld spot shot peening, can repair casting defects on the guide, and can be used for K418B casting superalloy casting shrinkage porosity, shrinkage cavity, Repair welding of defects such as undercasting, wear and cracks; the welding fluidity of the solder is good, the weld shape is good, the repaired welding joint has no cracks and unfused defects after fluorescence and X-ray inspection, and the average strength of the repaired welding joint at room temperature reaches 885MPa, It is better than the technical requirements of the part material standard.

The invention provides a piece of equipment capable of automatically detecting the air tightness of exhaust manifolds and a using method thereof. The equipment includes a detection vehicle, a starterand an alarm. Multiple longitudinal and horizontal slide ways are arranged on three sides of the detection vehicle. Multiple clamping devices and sealing devices with claws extend from the inside of the longitudinal and horizontal slide ways. The clamping devices and the sealing devices are connected with a power device. The tail of the power device penetrates the longitudinal and horizontal slideways, and the power device slides on the longitudinal and horizontal slide ways. The detection vehicle is provided with an automatic water injection pipe and an automatic gas transmission pipe. The starter and the alarm are arranged outside the detection vehicle, and are connected with a control system through a sensor. The clamping devices are further provided with stepper motors. The air tightness of exhaust manifolds is detected through water seepage under high pressure, and adjustment can be made automatically according to different detected manifolds. The detection effect is visual and obvious. The equipment is suitable for various kinds of automobile exhaust manifolds.

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 a stirring tool suitable for disassembling the upper and lower shoulders after friction stir welding of double-shaft shoulders in a closed ring seam and its use method. The double-shaft shoulder stirring tool consists of three parts: an upper shoulder, a lower shoulder and a stirring needle. The upper shaft shoulder and the stirring needle are clearance fit, the lower shaft shoulder and the stirring needle are connected by threads and the axial direction is limited by steps. After the double-shaft shoulder friction stir welding is completed, the head of the main machine continues to rotate and stays at the welding end position for 1 to 5 seconds; the head of the main machine and the retracting shaft drive the stirring tool up as a whole, and the lower shoulder and the stirring pin assembly move down as a whole, Make the upper and lower shaft shoulders separate from the material to be welded in a rotating state; after the upper and lower shaft shoulders are completely separated from the welded plate, the main shaft and the retracting shaft stop rotating, and use a disassembly tool to separate the lower shaft shoulder from the stirring needle; move the main machine head Pull out the upper shoulder and the stirring pin from the material to be welded, leaving only a keyhole with the diameter of the stirring pin on the plate to be welded.

The invention relates to a novel welding device, which comprises a welding frame, a welding box and a point welding machine, wherein the welding box is fixedly arranged at the upper end of the welding frame; rolling wheels are arranged at the bottom of the welding frame; a brake plate is arranged at the right side surface of the welding frame arranged above the rolling wheels; an accommodating cavity is formed in the welding box; ascending and descending grooves extending in the vertical direction are formed in the front and back inner walls of the accommodating cavity; sliding arms matched with the ascending and descending grooves are symmetrically arranged at the front part and the back part of the point welding machine; each sliding arm is provided with an inclined angle groove; the lower end of the point welding machine is provided with a welding head; retraction grooves with downward end openings are symmetrically formed in the point welding machine at the left side and the right side; a press block is arranged in each retraction groove in a way capable of vertically sliding; the upper end of each press block is fixedly provided with a tension spring; and the upper end of each tension spring is fixedly connected with the top wall of the corresponding retraction groove.

The invention provides novel equipment capable of detecting exhaust manifold airtightness and an application method. The novel equipment comprises a detection vehicle, a starter, an alarm device and awater-gas three-way main pipe, wherein a plurality of vertical and transverse slideways are arranged on three sides of the detection vehicle, a plurality of clamping devices and a sealing device witha first claw stretch out from the inner portion of the vertical and transverse slideways, the clamping devices and the sealing device are respectively connected with a power device, a tail end of thepower device penetrates through the vertical and transverse slideways, the power device moves on the vertical and transverse slideways, the detection vehicle is provided with automatic water injection pipe fittings and automatic air transmission pipe fittings, the starter and the alarm device are arranged outside the detection vehicle and are connected with a control system through sensors, the water-gas three-way main pipe is provided with an exhaust manifold connection device and is further provided with two branch pipes, and the branch pipes are respectively connected with the automatic water injection pipe fittings and the automatic air transmission pipe fittings. The novel equipment is advantaged in that manifold airtightness is detected through compression water seepage, the detection effect is visual and obvious, and one machine multiple purposes is realized.

A welding device comprises a welding rack and a welding box fixedly mounted at the upper end of the welding rack, as well as a spot welder, wherein rollers are arranged at the bottom of the welding rack; a braking vane is arranged on the right side surface, above each roller, of the welding rack; an accommodating cavity is formed in the welding box; lifting grooves stretching up and down are arranged in the front inner wall and the rear inner wall of the accommodating cavity; sliding arms matched with the lifting grooves are symmetrically arranged on the spot welder in tandem; each sliding arm is provided with an oblique groove; a welding head is mounted at the lower end of the spot welder; indentation grooves of which end openings face downwards are formed in the spot welder in bilateral symmetry; a pressing block capable of sliding up and down is arranged in each indentation groove; a tension spring is fixedly mounted at the upper end of each pressing block; and the upper ends of the tension spring are fixedly connected with the top walls of the corresponding indentation grooves.

The invention relates to a separated heat pipe evaporator heated by rotating flow. Two or more heat exchange fluid passages are formed by using partition plates in the heat exchange fluid. Circumferential circulation in each zone, the circumferential circulation of different channels passes through the openings on the baffles in the heat exchange fluid for axial flow connection, the fluid flow has no dead zone retention, and completely eliminates the baffles when the traditional Zigzag baffle structure is used for flow. The stagnation of the corner area makes the heat exchange sufficient and the resistance smaller; the liquid pipe and the steam outlet pipe are arranged on the top of the shell, and the liquid pipe passes through the shell to communicate with the liquid chamber at the bottom, and the outer wall of the liquid pipe is set with an isolation pipe. The structural design makes the central liquid inlet pipe pass through the central isolation pipe without being heated, and the return liquid will not be heated to generate steam to block the liquid return flow, and the return liquid of the present invention is more concentrated and uniform, and the filling volume of the working medium is greatly reduced , The structure of the evaporator is more compact and miniaturized.

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.