9results about How to "Reduce welding stress" patented technology

The welding clamp comprises a base, a supporting plate, two pressing mechanisms and a plurality of positioning mechanisms, the supporting plate is arranged above the base, the two pressing mechanisms are symmetrically arranged at the two ends of the supporting plate, and the positioning mechanisms are symmetrically arranged in the middle of the base; the pressing mechanism comprises a first air cylinder and a second air cylinder. The positioning mechanism comprises a clamping device and a positioning plate with a positioning hole. The welding method comprises the steps that A, a high-pressure oil pipe body and an assembly are installed on a welding clamp; b, the position of the assembly is limited through a positioning piece, and diagonal positioning of symmetrical holes is achieved; c, welding assemblies in the middle of the high-pressure oil pipe through laser welding, and then welding the assemblies from the middle to the periphery in a symmetrical welding sequence; and D, after welding is completed, the welded high-pressure oil pipe is taken out of the welding tool. Rigid constraint can be weakened, welding stress can be dispersed and reduced, and welding of the high-pressure oil pipe is simpler.

This invention discloses an automatic welding device for foot pedal brackets of new energy vehicles, belonging to the field of welding equipment technology. It includes a turntable, a welding robotic arm, a fixed base plate, a bracket positioning assembly, a gripper cylinder, a translation assembly, and a connecting arm; an mounting arm with a pressure roller mounting arm fixedly connected to one end, the pressure roller mounting arm being horizontally rotatably connected to a pressure roller. In this invention, the two mounting arms and the pressure roller move relatively close together, allowing the pressure roller to press down on the upper and lower tips of the arc-shaped notch of the bracket and forcibly straighten the tips, making the tips fit against the tubular part of the contour frame. Thus, during welding, after the tips melt, they can be fixed at the connection between the horizontal bracket and the tubular part of the contour frame, preventing gaps between the horizontal bracket and the tubular part of the contour frame. This avoids gaps or defects at the contact point between the contour frame and the horizontal bracket after welding, which would affect welding accuracy. It also reduces welding stress to some extent. Furthermore, by straightening the tips, interference with the welding robotic arm during welding is avoided.

A kind of low vacuum laser welding method for GH4169 high-temperature alloy and SS304 stainless steel, the present application belongs to laser welding technical field.The present application solves the problem that the existing welding method cannot realize the low-cost and high-quality connection of medium thickness and above GH4169 alloy and SS304 stainless steel.One, welding assembly;Two, low vacuum laser welding;Three, heat treatment.The present application is used for the low vacuum laser welding of GH4169 high-temperature alloy and SS304 stainless steel.

The application discloses a back contact photovoltaic module and a preparation method thereof. The method comprises the following steps: providing a cell piece and a solder strip; the cell piece is provided with a main grid; the solder strip is stretched, and tin paste is sprayed on one side surface of the solder strip; the tin paste sprayed on the solder strip is pre-solidified to connect the tin paste and the solder strip; one side of the solder strip, on which the tin paste is sprayed, is attached to the main grid of the cell piece and heated to remove the tin paste, so that the main grid of the cell piece and the solder strip are fixedly connected to form a cell string; and the cell string is encapsulated and laminated to form the back contact photovoltaic module. By pre-solidifying the solder strip with the tin paste, the tin paste is preliminarily solidified, the initial temperature difference between the solder strip and the cell piece is reduced, the welding stress is reduced, the probability of hidden cracks in welding is greatly reduced, and the performance of the photovoltaic module is ensured.

The invention relates to the technical field of metal welding, in particular to welding equipment for metal base material production, which comprises a base frame, clamping plates for limiting a metal base material are arranged on the two sides of the base frame, a moving frame sliding on the base frame through an electric sliding block is arranged below the clamping plates, and a flowing groove for fully exposing the welding position of the base material is formed in the middle of the base frame. The clamping plates are arranged in an L shape, so that the two base materials cannot deviate even if the two base materials bear the abutting force of the other base material during weld joint butt joint, the stability of the two base materials during follow-up welding is effectively guaranteed, smooth flowing of high-temperature gas near a weld joint during welding can be guaranteed through the arrangement of the flowing grooves, and the welding quality is improved. And when the containing box is driven by the driving part to continuously move to cover the recycling hopper, the sliding piece opens the recycling box when moving, welding slag collected in the recycling box falls into the recycling hopper at the moment, and manual operation is not needed when the welding slag is discharged.

The invention provides an X-ray tube anode target disc as well as a preparation method and application thereof. The X-ray tube anode target disc comprises a WRe-molybdenum alloy metal target material layer, a transition solder layer and a silicon carbide heat storage matrix which are sequentially compounded from top to bottom, the molybdenum alloy is selected from TZM, MHC and molybdenum lanthanum alloy; the transition solder layer is a Zr layer or a Ti layer; a non-welding surface of the silicon carbide heat storage substrate is provided with an aluminum oxide-titanium oxide blackening coating, and the room-temperature heat radiation coefficient of the aluminum oxide-titanium oxide blackening coating is 0.80 or above. The X-ray tube anode target disc has remarkably improved thermal performance, welding stability, mechanical performance and efficient thermal radiation heat dissipation performance.

This invention relates to the field of steel plate welding technology, specifically to a steel plate butt welding device, including a base and a processing table, as well as a welding mechanism, a heating mechanism, a beveling mechanism, and a splicing mechanism. The splicing mechanism includes a drive assembly, two feeding plates, and two clamping assemblies. The beveling mechanism includes a bidirectional electric push rod, a position adjustment assembly, two grinding discs, and two swinging assemblies. A support column is fixedly provided on the top of the base. The heating mechanism includes a telescopic assembly, a first sliding assembly, and four electric heating plates. The welding mechanism includes a welding torch, a second sliding assembly, and two traction assemblies. This steel plate butt welding device of the present invention prevents visual errors caused by manual beveling based solely on experience, improves the adjustment accuracy of the grinding disc tilt angle, further improves the beveling accuracy, ensures the uniformity of the beveling of the two steel plates, and prevents problems such as incomplete penetration, welding deformation, and undercut, thereby improving the butt welding effect of the two steel plates.

The application belongs to the technical field of semiconductor packaging, and particularly relates to a device and method for shaping and bonding of a carrier tape flip solder metal electrode; the method comprises the following steps: positioning and sleeving an integrated device of a metal electrode and PI into a lower mold according to a positioning pin; sequentially sleeving springs on all guide pins of the lower mold; placing an upper mold on the lower mold so that guide pin through holes of the upper mold are aligned with the guide pins; vertically applying pressure to a middle position of the upper mold, and alternately tightening the pressure screws; when the gap between the upper mold and the lower mold is 2mm, stop tightening the pressure screws; placing a shaping clamp in the center of a pressure test table, and tightly pressing the upper and lower molds with a pressure of 150N; alternately tightening two fixing screws, and taking the shaping clamp off the test table when the feedback force is within the range of 150N+5N; the application has the characteristics of high efficiency, reliability, simplicity, practicality, good alignment, and effective reduction of welding stress.

This invention relates to the field of welding technology and discloses a laser-arc hybrid welding device for building electrical construction, comprising a robotic arm, a wire feed tube, a guide cylinder, and at least two oscillating plates. Multiple oscillating plates are driven to oscillate synchronously via a lifting ring, enabling real-time and precise changes in the tilt angle of each laser emitter. This design allows the same device to achieve two key process modes: Mode 1, when high-efficiency welding is required, the laser beam can be precisely focused on the end of the welding wire to achieve high-energy-density hybrid welding; Mode 2, when pre-treatment or post-treatment of the weld is required, the laser beam can be spread out to irradiate both sides of the weld, preheating or slowly cooling the base material, effectively reducing welding stress and improving the fluidity of the molten pool.