84results about How to "Welding safety" patented technology

The invention relates to an ultrasonic welding device for welding foil-like materials and includes an ultrasound sonotrode, an anvil, an adjusting unit for adjusting a relative position between the ultrasound sonotrode and the anvil, and a regulating unit which regulates, via the adjustment unit, a width of a working gap between the ultrasound sonotrode and the anvil. The anvil is mounted to be movable with respect to the ultrasound sonotrode on a movable mounting. The adjusting unit has a first wedge element connected to the anvil, a second wedge element, and an actuator. The actuator is connected to the second wedge element, and the second wedge element moves relative to the first wedge element to execute a position change of the anvil relative to the ultrasound sonotrode.

The invention relates to an explosive welding forming method of magnesium and aluminum alloy composite plates. The explosive welding is performed according to the performance requirements of the magnesium and aluminum alloy composite plates, ammonium nitrate fuel oil mixture is adopted, and long-distance instantaneous explosive form is performed on a ground sand base. The welding method is high in forming speed, welding line is firm and is good in metallographic structure compactness, the combined rate is up to 99.5%, the interfacial shear strength is 120MPa, on the premise of strict operation, the welding process is safe and reliable, and the method is reliable and effective in magnesium and aluminum alloy composite plate production.

The invention relates to the field of a compressor, in particular to a liquid reservoir air inlet and outlet pipe and application thereof. The liquid reservoir air inlet and outlet pipe comprises an air inlet pipe and an air outlet pipe, wherein the air inlet pipe is arranged on the upper part of a liquid reservoir; the air outlet pipe is arranged on the lower part of the liquid reservoir; the air inlet pipe comprises a first air inlet pipe and a second air inlet pipe; the first air inlet pipe and the second air inlet pipe are butt-welded through flash welding; the air outlet pipe comprises a first air outlet pipe and a second air outlet pipe; and the first air outlet pipe and the second air outlet pipe are butt-welded through flash welding. By using the liquid reservoir air inlet and outlet pipe of the structure, the using amount of copper is saved, and the manufacturing cost is reduced; and the second air inlet pipe and the second air outlet pipe are all connected to a housing of the liquid reservoir through the electric resistance welding free of solder. The technology of the invention is simple, the solder is saved, further the manufacture cost is reduced, meanwhile in the manufacture process exhaust gas such as carbon dioxide or the like is not generated to pollute the environment.

The invention discloses a connecting joint of a steel pipe concrete column and a profile steel concrete beam. The intersection between a steel pipe in the steel pipe concrete column and a flange girth of the profile steel concrete beam is provided with a pair of large and small annular plates of different diameters; the horizontal and vertical positions of the two annular plates are staggered away from each other; the small annular plate is welded with a steel beam flange girth in the profile steel concrete beam; the large annular plate is welded with a longitudinal bar in the profile steel concrete beam; a steel pipe is arranged between the annular plates for welding the large and small annular plates into a whole; and the steel pipe of the steel pipe concrete column and the steel pipe for connecting the two annular plates are connected into a whole through a vertical rib. The connecting joint of the steel pipe concrete column and the profile steel concrete beam disclosed by the invention has the advantages that: 1, a large quantity of steel bar holes are not required to be formed on a steel pipe in a steel pipe concrete column; 2, damages to the section of a profile steel concrete column caused by steel pipe punching are avoided; and 3, convenience is brought to construction casting and compacting of concrete.

The invention provides an explosive welding forming method of a titanium-pure aluminum-aluminum alloy composite plate. The explosive welding forming method of the titanium-pure aluminum-aluminum alloycomposite plate performs explosive welding forming according to the performance requirements of a titanium plate, an aluminum plate and an aluminum alloy plate; and an ammonium nitrate fuel oil mixture is adopted, and remote instantaneous explosive welding forming is performed on a ground sand grain substrate. Compared with the related art, the explosive welding forming method of the titanium-pure aluminum-aluminum alloy composite plate is high in speed, firm in interface bonding, good in interface shearing strength and high in bonding rate, the shearing strength of the titanium-pure aluminum-aluminum alloy composite plate reaches 230 MPa, the explosive welding bonding rate is 99%, controllability is good, the welding process is safe and reliable, and the explosive welding forming methodof the titanium-pure aluminum-aluminum alloy composite plate is a reliable and effective method for preparing the titanium-pure aluminum-aluminum alloy composite plate.

The invention discloses an aluminum plate welding process, and relates to the technical field of welding processes. The aluminum plate welding process mainly includes the four steps of pre-weld preparation, tack weld, welding and post-weld treatment. By the adoption of the aluminum plate welding process, welding steps are simplified, the welding mode is simple, materials are accurately and standardly selected and used, the welding quality of steel pipes can be guaranteed, the standard welding mode is provided for aluminum plates with the thickness being 4 mm, and quick and safe welding of the aluminum plates with the thickness being 4 mm is facilitated.

The invention discloses a connection method for a crimping-to-welding circuit board, and a connecting terminal, wherein a crimping-to-welding device is added between a circuit board welding pad and a connecting line which need to be connected, and the connecting line is connected with the circuit board welding pad through the crimping-to-welding device; the connecting line is connected with the crimping-to-welding device by means of crimping, and the crimping-to-welding device is connected with the circuit board welding pad by means of welding; thus the connecting line is connected by means of the most reliable crimping, and the circuit board is connected by means of the simplest and the most convenient welding. The problems of inconvenience operation, unreliable welding spots, unstressed welding spots, the need of carrying out other treatments, and the like during the direct welding of the line and the circuit board (in particular in case of a thick line) are avoided, and compared with other common screw crimping-to-welding connecting terminals, the occupied space volume and the operation difficulty are reduced, and the shock resistance and the connection reliability are improved.

The invention provides an automatic scaffold welding machine. The welding machine is used for automatic welding of a main steel pipe serving as a vertical rod in a steel pipe scaffold with socket andspigot joints and a socket pipe and an U-shaped socket part. The welding machine comprises a base, the front side of the base is provided with a three-shaft position-changing device for switching a feeding station with a workpiece to be welded and a welding station and realizing rapid welding of the two surfaces of the workpiece to be welded through 180-degree-rotation of the welding station; twogantry type welding gun supports which are vertically arranged are installed on the two sides of the rear side of the base, a cross frame beam is arranged between the two welding gun supports, and thecross frame beam is provided with a spot welding mechanism which is used for carrying out spot welding on the socket pipe which is at the welding station of the three-shaft position-changing device and fixed on the main steel pipe and a multiple sets of double-gun welding mechanisms which are used for simultaneously welding weld joints of all U-shaped socket parts; and one end of the cross framebeam is provided with a welding gun walking mechanism which is used for pulling the multiple sets of double-gun welding mechanisms to move at the same time to carry out welding on the welding joints of all the U-shaped socket parts correspondingly. The invention further provides a welding method of the automatic scaffold welding machine.

The invention relates to the technical field of metal pipe processing equipment, in particular to a safe and convenient metal pipe welding device. The technical problem to be solved by the present invention is that the use of the electric welding device has a large risk factor, poor quality and inconvenient use. In order to solve the above technical problems, the present invention provides a safe and convenient welding device for metal pipes, which includes a base, two adjustment devices, two vertical plates and a welding device. Both sides of the upper surface of the base are fixedly connected with An adjustment device, and the tops of the two adjustment devices are fixedly connected with vertical plates, and the opposite sides of the two vertical plates are connected by a welding device. By improving the welding device, the invention can make the electric welding machine move up and down stably when the telescopic cylinder is started, thereby improving the overall quality of welding, and is convenient to use, and two sets of semicircular splints can fasten the metal pipe, enabling two Or stable welding, at this time, the staff can stay away from the welding machine.

The invention discloses a 0Cr18Ni9 stainless steel plate welding process, and relates to the technical field of welding processes. The 0Cr18Ni9 stainless steel plate welding process mainly includes the steps of preparation before welding, tack weld, welding and treatment after welding. By means of the 0Cr18Ni9 stainless steel plate welding process, the welding steps are simplified, a welding mode is simple, material selection is precise and standard, the welding quality of 0Cr18Ni9 stainless steel plates can be guaranteed, the standard welding mode is provided for the 0Cr18Ni9 stainless steel plates, and quick and safe welding of the 0Cr18Ni9 stainless steel plates is facilitated.

The invention discloses a 16 Mn steel plate argon arc welding process, and relates to the technical field of welding processes. The 16 Mn steel plate argon arc welding process mainly includes the steps of preparation before welding, tack weld, welding and treatment after welding. By means of the 16 Mn steel plate argon arc welding process, the welding steps are simplified, a welding mode is simple, material selection is precise and standard, the welding quality of 16 Mn steel plates can be guaranteed, the standard welding mode is provided for the 16 Mn steel plates, and quick and safe welding of the 16 Mn steel plates is facilitated.

The invention discloses a welding tool for a rear baffle of a vehicle body, and belongs to the technical field of manufacturing of automobiles. The welding tool comprises at least two supporting rods, wherein the at least two supporting rods pass through sliding blocks at the lower end and are oppositely vertically arranged into a chute in a base; the chute is in the same direction as the length direction of the base; workpiece clamps oppositely extend out from the upper ends of the supporting rods and are glidingly connected with the supporting rods through workpiece clamp locking screws. The welding tool can solve the problems of difficult overturning of cylinder, inconvenient operation and high cost in welding of the rear baffle of the existing vehicle body.

The invention provides an iron box wrapping-repairing method for gas pipe leakage; the method includes the following steps of: 1) making a wedge-shaped wooden plug the diameter of which is similar to that of a leak source and driving the wooden plug into the leak source; 2) coating sealant on a slit between the wooden plug and the leak source; 3) making an iron box the opening of which can be matched with a pipe line according to the size of the leak source, arranging an air inlet and an air outlet on the iron box simultaneously and installing one air intake valve and one drain tap on the air inlet and the air outlet respectively; 4) filling paste with volume no more than 3/4 that of the iron box into the iron box in advance, and covering the iron box on the leak source in an inverted way; 5) introducing nitrogen in from the air intake valve, opening the drain tap simultaneously, installing a rubber tube on the drain tap, and drawing the rubber tube far away from the area of the leak source; 6) coating the sealant in the slit between the iron box and the pipe line to completely cut off the coal gas at a welding position; 7) welding the iron box and the pipe line after confirming that the concentration of CO at the area of the leak source is less than 30ppm; and 8) after welding, cutting nitrogen off, and closing the air intake valve and the drain tap.

The invention discloses a Gas Metal-arc (GMA) welding contact tip having a bushing made of a copper material. The invention is characterized in that the GMA welding contact tip is installed on a front end of a GMA welding machine which receives welding wires at a predetermined speed and forms a molten according to the welding arc generated between the contact tip and parent metals, and welding current is transmitted to the welding wires so as to guide the bath. The GMA welding contact tip includes a copper tip main body installed on the welding machine; an energization connection part integrally connected to the front of the tip main body in a conducting manner, the energization connection part being narrower than the periphery of the tip main body (10); the cylindrical bushing made of materials stronger than the copper and installed in the front of the energization connection part, and preventing burn back caused by the wielding arc and the diameter expansion of the tip; and a front reinforcement mouth around the energization connection part and the periphery of the bushing.

The invention provides a tube welding and locating device for production. The tube welding and locating device for production comprises a fixing frame, a supporting plate, a first tube locating piece,a second tube locating piece and a third tube locating piece. The fixing frame comprises a first fixing plate and a second fixing plate which are parallel. A connection plate is perpendicularly and fixedly connected between the first fixing plate and the second fixing plate. One side of the connection plate is fixedly connected with the supporting plate. The first tube locating piece is arrangedinside the first fixing plate. The second tube locating piece driven by a lifting drive mechanism is arranged inside the second fixing plate. The upper surface of the end, far away from the connectionplate, of the supporting plate is provided with a sliding groove. The sliding groove is parallel with the connection plate. A sliding block is arranged in the sliding groove in a penetrating manner.A supporting rod used for supporting the third tube locating piece is arranged on the upper side of the sliding block. The top end of the supporting rod is detachably and fixedly connected with the third locating piece. The tube welding and locating device for production is convenient to use, capable of conducting welding and locating on tubes of different specifications, good in welding accuracyand good in welding effect.

The invention discloses a low-frequency and low-power laser welding method for oxygen-free copper, and belongs to the technical field of welding. The method comprises the technological processes of cleaning, coating, drying, welding recleaning and the like. According to the method, the oxygen-free copper welding problem of low-frequency and low-power laser equipment is solved, the welding processis safe and reliable, the conditions of uniform coating of a graphite coating and welded joint penetration before and after welding are well controlled, and welded joints are flat, attractive and goodin comprehensive performance.