18 results about "Spot welding" patented technology

The invention provides a double-sided bonding method applicable to hard alloy bars in the hard alloy hard-surface machining process and an application thereof. According to the method, a locating groove plate for bonding is scientifically designed; the hard alloy bars are arranged on the locating groove plate and bonded through perforated double-sided tape; the hard alloy bars or blocks are fixed through spot welding; the tape is placed on the steel surface of a component to be machined, and the steel surface is subjected to spray welding, surfacing and grinding and machined into the hard surface. The method is simple and easy to realize, the hard alloy bars are bonded at a time, the bonding efficiency is greatly improved, and the defects that bonding angles are different and bonding intervals are uneven due to manual operation are overcome, the bonding accuracy is improved, and high-efficiency combination of the bonding plate to which the hard alloy bars adhere and the surface to be machined is effectively achieved through the double-sided tape, and operation is simplified. Through the method, the abrasion resistance of the hard surface of the product is effectively guaranteed and improved; the method can be well applied to hard surface machining of centering devices or TC bearings for mining drilling tools and screw drilling tools.

The invention discloses a dispersion strengthening copper base composite material for a high-strength and high-conductivity spot-welding electrode and a preparation method thereof, and belongs to the technical field of metal base composite material. The dispersion strengthening copper base composite material comprises the following components in percentage by mass: 5-10% of TiC, 1-5% of In2O3, 0.1-1% of Al2O3, and the balance of Cu, wherein the TiC has the characteristics of high hardness, high melting point and good thermal stability, and can improve the copper strength, wear resistance and high-temperature resistance; and In2O3 has smaller electrical resistivity and higher catalytic activity. The spot-welding electrode prepared by adopting the composite material has such characteristics as high strength, high electrical conductivity, high wear resistance, high softening temperature resistance and high arc ablation resistance; the electrical conductivity is above 80% IACS; the density is higher than 98%; the service life is prolonged by 9-10 times compared with a conventional copper alloy spot-welding electrode; and the softening temperature reaches above 690 DEG C.

The invention relates to a welding wire for steel-copper dissimilar metal submerged-arc welding and a welding method of the welding wirearc, belonging to the field of submerged-arc welding. The welding wire comprises the following chemical components in percentage by weight: 0.05-0.15% of arcbon, 0.80-2.10% of manganese, 0.07-0.95% of silicon, 0-0.03% of sulphur, 0-0.03% of phosphorus, 0.20-0.35% of copper, 0-0.20% of chromium, 0-0.30% of nickel and the balance of iron; the welding method comprises the following steps that: before being welded, a copper plate and a steel plate are not preheated; the steel plate and the copper plate are fixed by using gas shield welding spot welding; steel-copper dissimilar metal submerged-arc welding wires are used for matching with SJ101 welding flux so as to carry out submerged-arc welding; when being welded, the welding wire deviates 4mm-8mm from the side of the copper plate; the welding current is 396-630A; the welding voltage is 35-40V; and the welding speed is 23-30m/h. The welding joint obtained by the welding method provided by the invention has the characteristics of good mechanical performance, high efficiency, beautiful appearance and little crack, etc.

The invention relates to a single-side welding machine used for an electrostatic dust collector moving electrode plate. The single-side welding machine comprises a rack (3), wherein the rack (3) is connected with a motor (2); a conveying device (9) is horizontally arranged on the upper side of the rack (3); the motor (2) is connected with the conveying device (9) by a transmission device (1) in a transmission fitting way; a portal frame (12) is arranged above the rack (3); the portal frame (12) is fixedly connected with a group of cylinders (7); piston rods of the cylinders are downwards arranged; the piston rod of each cylinder (7) is connected with a resistance spot welding machine (13); a control device (8) is also arranged at one side of the rack (3); and the control device (8) is connected with the cylinders (7) and the resistance spot welding machines (13) in a control way. The single-side welding machine used for an electrostatic dust collector moving electrode plate has the advantages that the production efficiency is high; the welding stability is ensured; the automation of the welding process is realized; and the production cost is reduced.

The invention discloses a spot-welding-free automatic welder. The welder comprises a welding gun, a moving device and a workbench. A tooling clamp is arranged on the workbench and comprises a lower fixing base, a lower workpiece die, an upper workpiece die, an upper fixing block and a supporting block. The upper fixing block is arranged above the lower fixing base by being fixedly connected with the supporting block. The lower workpiece die is fixed into the lower fixing base. The upper workpiece die is fixedly connected with the upper fixing block. The bottom of the lower fixing base is connected with a lifting cylinder used for controlling the fixing base to rise and fall. When the lower fixing base rises, the upper workpiece die and the lower workpiece die clamp a workpiece, the movingdevice drives the welding gun to perform welding along a gap of the workpiece, no spot welding fixing is needed when the workpiece is welded, automatic welding can be achieved, and the effective efficiency is high.

The invention discloses a full-automatic spring bed core production line which comprises a first working table and a second working table. The first working table comprises a conveying belt, multiplerollers, a connecting cover and a rotating shaft. The connecting cover is arranged on the side edge of the first working table. The connecting cover comprises a motor and a belt. The second working table is connected to the right side portion of the first working table. The second working table comprises a protecting cover, a partition plate, a working frame and a first sliding rail. The partitionplate is arranged on the left side of the surface of the second working table. The partition plate comprises a hydraulic cylinder. The working frame is arranged on the surface of the second working table. The working frame comprises a fixing base, a second sliding rail, a spot welding machine, a connecting base and a sliding wheel. The full-automatic spring bed core production line further comprises a bed core main body. The bed core main body comprises a first bed core plate, springs and a second bed core plate. According to the production line, bed cores can be produced synchronously at onestep on the working tables, more labor is not needed for operation, operation is easy, and the operation can be mastered easily.

The invention discloses a spot welding device with a purification structure for processing an intelligent watch chip, and relates to the technical field of spot welding devices. The spot welding device comprises a protection device and a containing device, a connecting seat is arranged outside the bottom of the protection device, a cross rod is arranged at one end outside the bottom of the connecting seat, a shell is arranged outside the cross rod, and a spot welding head is arranged at the bottom of the shell. Through the arrangement of an adjusting device, a connecting frame and an electricpush rod, a connecting slide block at one end of the electric push rod can be moved by the interaction of the connecting frame and the electric push rod in the using process, and the connecting slideblock can translate along the horizontal direction in a slideway, so that an auxiliary device connected with the connecting slide block can be more stable in the moving process and cannot shake when moving. Meanwhile, the position of a limiting device connected with the auxiliary device can be adjusted according to the requirement for welding the intelligent watch chip, so that the chip can be conveniently processed by the spot welding machine.

The invention provides a method for mounting and adjusting a hammer crusher. The method for mounting and adjusting the hammer crusher comprises the steps that (1) a foundation is constructed; (2) backing boards are mounted through a bed mortar mode, wherein a layer of cement slurry is brushed on the foundation, a formwork is then arranged at the positions where sizing blocks are mounted, mixed mortar is poured into the formwork and rammed tightly by a hammer, flat backing boards are arranged, the elevation of the sizing blocks is measured through a level gauge, the sizing blocks are leveled, and then demoulding, buttress and maintenance are carried out; (3) the foundation is maintained; (4) equipment is mounted; (5) the equipment is adjusted, wherein foundation bolts are fastened, the equipment is primarily adjusted to be level by adjusting the sizing blocks in a free state, the degrees of tightness of all sets of the sizing blocks are maintained to be in consistency, the bolts are then fastened in sequence, the bolts are fastened with proper strength in a first round and then are tightened by adding a lever, locking nuts are then fastened, and lastly all the backing boards are secured firmly through spot welding. Through the steps, influences brought by uneven foundations are compensated, the precision of mounting of the hammer crusher is ensured, the running vibration of the hammer crusher is reduced effectively, and the service life of the equipment is prolonged.

The invention discloses an intermediate layer alloy applied to resistance spot-welding of tantalum Ta1 and Q235 and a preparation method thereof. The intermediate layer alloy is prepared from the components in percentage by atom: 5%-10% of Ta, 5%-10% of Fe, 20%-25% of Ni, 15%-23% of Cr, 15%-22% of Cu, 20%-25% of Co, and the total atom percentage of the components is 100%. A certain thickness of intermediate layer alloy foil is placed between Ta1 and Q235 sheets to be welded, resistance spot-welding is used for welding operation to enable the intermediate layer alloy and partial base metal aresubjected to heat fusing by interface resistance, and the high performance welding of Ta1/Q235 is realized. According to the method and the intermediate layer alloy thereof, the matching between tantalum and stainless steel during welding is good, a single phase Fcc solid solution structure is used as nugget, joint comprehensive mechanical properties are remarkably improved, and the preparation method of the intermediate layer alloy foil is simple in process and low in cost.

The present invention relates to a microstep spot welding method and its welding equipment. It is characterized by that between vibration head and presser a fabric pile to be welded is placed, then the vibration on the described vibration head can produce heat quantity, the described presser is falled and pressed to the fabric pile to form welding spot, then the following steps can be repeated: using conveying device to hold the described fabric pile; upwards lifting the presser and loosening the described fabric pile; then moving the described conveying device and driving the described fabric pile to make it be moved for a certain distance; then making the presser be fallen again and pressed to the described fabric pile, and forming new welding spot on the fabric pile; the described conveying device loosens the fabric pile and can be back-returred to original position. The above-mentioned welding equipment structure can effectively prevent the fabric material from wrinkling when said fabric material is fed forwards.

Provided is an error-proofing mechanism for carbon brush assembling of an adjuster. An error-proofing measure is automatically activated when a carbon brush is assembled oppositely during the spot welding process, so that the spot welding of equipment is stopped, and the production of a defected product is prevented. The error-proofing mechanism comprises a connecting block. A metal right clamping block is installed on the bottom surface of the connecting block through connecting bolts. The error-proofing mechanism is special in that the metal right clamping block is installed on the bottom surface of the connecting block through the connecting bolts. The error-proofing mechanism is characterized in that the left end surface of the right clamping block is connected with a metal left clamping block through connecting bolts. The left clamping block and the right clamping block are insulated with each other. An electric conducting mandril A and an electric conducting mandril B are arranged on the adjacent end surfaces of the left clamping block and the right clamping block in an embedded mode. The lower portions of the electric conducting mandril A and the electric conducting mandril B are exposed, and the connection line of the lower ends of the electric conducting mandril A and the electric conducting mandril B is an inclined line, wherein the angle of inclination of the inclined line is equal to the angle of inclination of the end surface exposed by the carbon brush. The surfaces of the left clamping block and the right clamping block are provided with PLC binding posts. A error-proofing circuit is formed by the electric connection of the electric conducting mandril A and the electric conducting mandril B with the corresponding PLC binding posts through the corresponding left clamping block and the right clamping block. The PLC binding posts are connected with a PLC through wires.

The embodiment of the invention discloses a laser spot welding machine. The laser spot welding machine comprises fixing frame. A fixing groove is formed in the left end of the fixing frame. A weldingmoving assembly is arranged within the fixing groove. A shielding cover is arranged at the upper end of the right side of the fixing frame. A placing groove is formed in the upper surface of the fixing frame. A workpiece placement assembly is arranged within the placement groove. The laser spot welding machine is provided with a workpiece placement assembly consisting of a circulation assembly anda number of workpiece placement units. When a user uses the laser spot welding machine, workpieces can be placed on a plurality of workpiece placing units at the same time, and then a plurality of workpieces can be sequentially welded during machining, a large amount of loading time is saved because no manual operation is adopted in workpiece disassembly; and meanwhile, the number of workpieces machined by the laser spot welding machine is large, and even if the number of workpieces needing to be machined is large, simultaneous operation of a plurality of sets of equipment is not needed. Theoperation is simple and convenient, and the working efficiency is also improved.

The invention relates to a full-circle assembling method for a crown type grinding-fitting type partition plate of a steam turbine, and the method comprises the following steps that S1, a full-circlepartition plate inner ring is installed on a tool bottom plate, and is pressed through an inner ring pressing device; S2, blades in a full-circle of stator blade set are installed through stator bladeabutting devices one by one, and the maximum gap between the stator blade set and the partition plate inner ring is 0.2 mm; S3, spot welding is conducted on a steam inlet side splash-proof cover plate, stator blades are fixed through spot welding one by one, the splash-proof cover plate is pressed, a partition plate outer ring is heated, and the partition plate outer ring and the stator blade setare in interference of 0.4-0.6 mm; S4, the heated partition plate outer ring is pressed on the tool bottom plate, and after the partition plate outer ring is cooled to the room temperature, an outerring pressing device is removed; S5, a steam inlet side steam channel splash-proof cover plate is turned over and fully welded; and S6, grooves are welded. The full-circle assembling method has the beneficial effects that the partition plate is machined in a full-circle mode, the outer ring and the blades are in interference with each other by 0.4-0.6 mm, gaps between the blades are well eliminated through interference tightening force, full-circle welding machining of the partition plate is conveniently achieved, and the welding efficiency is improved.