122results about How to "Simple welding method" patented technology

The invention relates to the field of fire fighting and aims to provide an extinguisher cylinder welding machine and a welding method thereof, wherein the extinguisher cylinder welding machine is low in labor intensity and high in welding efficiency. The extinguisher cylinder welding machine comprises a base, a cylinder clamping device, a cylinder positioning device, a welding gun clamping device and a cylinder blanking device; and the cylinder clamping device comprises a valve base end mounting base, a valve base positioning bar with a protruding key arranged at the outer circumference, a bottom cover positioning mould relative to one end of the valve base positioning bar, a positioning bar sliding sleeve, a rotating device used for driving the positioning bar sliding sleeve to rotate, a positioning bar pushing device used for pushing the valve base positioning bar to move in the axial direction, a positioning mould pushing device used for pushing the bottom cover positioning mould to axially move and connected with a first guide rail in a sliding manner and a positioning regulation device, wherein the positioning bar sliding sleeve is arranged outside the valve base positioning bar in a sleeving manner, and a sliding groove is formed in the inner side wall of the positioning bar sliding sleeve in the axial direction. The extinguisher cylinder welding machine is low in the labor intensity and high in the welding efficiency. The welding method for the extinguisher cylinder welding machine is simple and practical.

The invention belongs to the technical field of optical fiber device fabrication, and discloses a fabrication method of a miniature optical fiber Fabry-Perot interferometer (FPI) with a controllable cavity length. A method in which a single mode optical fiber splices a hollow optical fiber (HCF) and a discharging taper is adopted to fabricate a miniature air cavity FPI. The structural size can becontrolled by adjusting a series of parameters such as an HCP length and various welding parameters such as a taper length, a two-fiber overlapping amplitude, a discharge parameter and the number of discharge times. By means of the method, the size-controllable, repeatable and efficient miniature air cavity Fabry-Perot interferometer can be obtained, and plays a vital role in an interference-typesensor based on Fabry-Perot. The method can make the microcavity level and perpendicular length of the FPI cover from a small value to a large value, and efficient fabrication can be achieved. By means of the method, according to user requirements, miniature air cavity FPIs with random sizes can be fabricated. Besides, a probe of the miniature air cavity FPI can be used for detection of parameterssuch as axial stress and temperature.

The invention discloses a method used for an arc welding power to realize electric arc wire feed. The method dispenses with a control cable or a carrier cable between the arc welding power and a far wire feeder, wherein a wire feeder control system is directly connected with the arc welding power by the welding cable, the energy of an electric arc is directly utilized to drive a wire feed motor, and the programme control of an automatic welding process can be realized. The wire feed method dispenses with the control cable or the carrier cable. By connecting the welding cable used for transporting electric arc energy with the far wire feed system, the programme control of the wire feed motor and the automatic welding process is realized, and the stable working of the welding system is guaranteed. As automatic wire feed consumable electrode electrical arc welding equipment dispenses with the control cable or the carrier cable connected between the electrical arc welding power and the wire feeder, the welding method can be much more convenient, and the service reliability and the stability of the welding equipment are improved. Besides, the invention also discloses a system for realizing the method.

The invention relates to a method for welding and repairing copper surface defects of an aluminum-copper composite board transition joint. The method comprises the following steps of: before welding, preheating a part to be welded at the temperature of 20020 DEG C so as to slow down heat loss of a welding area; filling and welding pit defects on a copper surface by utilizing an inert gas arc welding method, wherein the inert gas is a mixed gas of argon and helium; and introducing cooling water to an aluminum surface of the aluminum-copper composite board transition joint so as to reduce the heat introduced to a combination area interface of the aluminum-copper composite board transition joint. The welding method of the invention is simple and practical, not only improves the work environment, reduces the labor intensity of workers and the production cost, but also ensures that the partial peeling phenomenon does not occur in the welded aluminum-copper composite board transition joint.

The invention discloses a welding system and a welding method for all-position automatic welding of a small-diameter pipeline, and relates to the technical field of pipe welding. The welding system comprises a supporting main body with an opening, wherein a rotating disc and a clamp holder base are arranged on the supporting main body, and the rotating disc can rotate on the supporting main body; a welding gun is further arranged on the rotating disc; and a rapid clamping device is arranged on the clamp holder base and comprises clamping positioning angle blocks and clamping rotating blocks which are oppositely arranged around the rotating circle center of the rotating disc, and the clamping positioning angle blocks and the clamping rotating blocks can move relative to each other. The welding system can effectively meet the requirements of factory sites and other pipeline systems with small pipe diameters, high pipeline concentration, multiple pipeline turning points, multiple crossed positions and narrow construction space, and welding equipment is small in size and convenient to assemble and disassemble.

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 welding method for a freeze drier board layer. The board layer comprises an upper board, a lower board, edge steel and square tubes. The square tubes are welded between the upper board and the lower board, and the upper board, the lower board and the square tubes are welded and fixed through a plasma arc welding method. The freeze drier board layer manufactured through the welding method comprises the upper board, the lower board and the edge steel. The four pieces of edge steel is arranged at the ends between the upper board and the lower board, the upper board and the lower board are welded and fixed through the edge steel to form a body of the board layer, the square tubes are arranged between the upper board and the lower board and provided with inner cavities, the ends, connected with the edge steel, of the square tubes are provided with slopes making the inner cavities communicated with the external environment, and multiple circulating cavities are formed in the body.

The invention discloses a welding method for H-shaped steel parts. The welding method comprises the following steps of (1) carrying out blanking on the parts; (2) carrying out assembling; (3) carryingout welding; (4) shoveling slags; (5) carrying out conveying; (6) carrying out correction; (7) carrying out cutting-off operation; and (8) carrying out polishing. The welding method for the H-shapedsteel parts has the advantages of being simple, and the machined H-shaped steel is smooth in surface, accurate in size and good in consistency.

The invention discloses an impeller for a centrifugal pump. The traditional impeller is easy to wear and lock and has high manufacturing cost. In the impeller for the centrifugal pump, a front cover plate, a rear cover plate and blades are made of stainless steel materials, the plurality of blades are radially arranged between the front cover plate and the rear cover plate, the blades, the front cover plate and the rear cover plate are welded, the edge of a through hole of the front cover plate is provided with a plastic opening ring, the external diameter of the plastic opening ring is larger than the inner diameter of a center hole of a guide blade cover plate, a hub is made of plastics and assembled on the rear cover plate, the front end of the hub extends into the plastic opening ring, a radial clearance is kept between the front end of the hub and the plastic opening ring to form an impeller inlet, and a structure which can move along a pump shaft is adopted in an inner hole of the hub. When the pump is assembled, the front end surface of the plastic opening ring contacts the guide blade cover plate, the impeller can float on the pump shaft through the hub to automatically regulate the size of an axial clearance, thereby the problems of impeller wear and locking caused by silt can be solved to a certain extent. Moreover, by adopting the impeller with the assembly structure, the processing difficulty and the construction cost are reduced.

The invention discloses a hot dip galvanized thin plate butt welding method. The method is characterized by comprising the following steps of: 1, adjusting the horizontal distance between double electrodes to be 3 to 4 millimeters; 2, connecting welding protective gas; 3, directly placing and fixing a thin plate to be welded on a horizontal motion platform without reserving gaps; 4, adjusting the welder current of a master electric arc welder to be 90 amperes, adjusting the current of a slave electric arc welder to be 120 amperes or 26 volts, adjusting the wire feeding speed to be 0.4 meter per minute, and adjusting the motion speed of the workpiece platform to be 0.5 meter per minute; 5, introducing the protective gas for 3 seconds, then starting a master electric arc and a slave electric arc, starting the motion platform after 1 second to drive the workpiece to move, and starting welding; 6, when the welding is finished, switching off a slave electric arc switch, and then switching off a master electric arc switch and a motion platform switch; and 7, switching off a protective gas switch after 5 seconds, meanwhile closing water cooling equipment, and finishing welding. The welding method is simple and easy to operate, improves the welding quality, and is particularly suitable for complete penetration welding of butt welding of thin plates with thickness of 2.5 millimeters.

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 composite pole column, a top cover and a battery, and relates to the technical field of batteries. The composite pole column comprises an inner pole column and an outer pole column, wherein the inner pole column is provided with a first matching part, the outer polecolumn is provided with a second matching part matched with the first matching part, one of the first matching part and the second matching part is a concave groove, the other one of the first matching part and the second matching part is a protrusion, and when the first matching part is matched with the second matching part, the circumferential edge of the protrusion is attached to the circumferential edge of the groove inner wall of the concave groove, and the end face of the protrusion is attached to the groove bottom of the concave groove. According to the invention, the pole column does not need to be connected in a welding mode, pseudo soldering does not exist, only the concave groove and the protrusion need to be matched in a stamping mode and the like, and the pole has the advantages of being simple in matching mode, reliable and low in cost; and the concave groove and the protrusion can form a tightly attached composite structure, and the rigidity, the conductivity and the air tightness of the pole column can be ensured, so that the quality, the use performance and the safety performance of the pole column are ensured.

The invention relates to automatic welding equipment. A sliding table is arranged on an operating platform, the sliding table is fixed in an operating region of the operating platform, grooves are formed on the two sides of the sliding table, and a movable fixed seat is mounted on the sliding table by virtue of the grooves; a welding machine grounding protection mechanism is arranged on one side of the sliding table, where the groove is located, a welding gun sliding table mechanism vertical to the sliding table is arranged on the other side of the sliding table, where the groove is located, the welding machine grounding protection mechanism and the welding gun sliding table mechanism are arranged at a center line of the sliding table and are fixed on the operating platform of the sliding table, and spaces from the welding machine grounding protection mechanism and the welding gun sliding table mechanism to the two sides of the sliding table are equal, and the welding gun grounding protection mechanism is aligned to the welding gun sliding table mechanism; and a welding gun mechanism which slides up and down is arranged on the welding gun sliding table mechanism, and the welding gun mechanism is in contact with a welding device on the movable fixed seat by virtue of a track on the welding gun sliding table mechanism. The movable fixed seat on the sliding table is controlled to move back and forth by virtue of a program, and the coordinate with a welding gun is utilized for realizing automatic welding, thereby improving yield and being simple in welding way.

The invention provides a one-step forming straight welding method for stainless steel outer composite tubes. The method is characterized in that one-step welding is performed on shaped bevels of tube blanks, with welding wires having higher nickel and chromium content than stainless steel composite layers and solder having higher nickel and chromium content than the stainless steel composite layers, under the conditions: 0.5-2.5mm spacing of shaped bevels of the tube blanks, 13-23mm spacing H between a welding torch contact nozzle and a tube, 1.0-2.0mm distance h between the welding wires and the tube, 200-350A welding current, 20-50V welding voltage, 0.5-1.5m/min welding speed, and 10-30m/min feeding speed of welding wires. Finished welds of the stainless steel outer composite tubes are subjected to salt spray test for 125 hours, and the test results show no rust; the method is simpler than the existing methods, available for one-step forming, fewer welding wires and solder are used, and the cost is low.