7results about How to "High quality welding" patented technology

The invention discloses a welding device and method integrating laser cleaning and laser arc hybrid welding. The welding device comprises a laser device, an optical splitter and a laser galvanometer which are connected through optical fibers. The laser is used for generating a beam of high-energy laser, and the high-energy laser is transmitted to the optical splitter through the optical fiber and is divided into two parts by the optical splitter; and the two beams of laser after light splitting are transmitted to the laser galvanometer through the optical fiber, and the laser galvanometer outputs two beams of laser with different laser scanning shapes to a workpiece to be welded. High-quality welding can be carried out on the welding seam of the steel bridge corrugated plate and the shear nail beam, and technical support is provided for construction of a novel bridge structure.

The invention belongs to the technical field of welding, and particularly relates to a portable double-wire laser TIG composite welding gun for a marine thin plate and application of the portable double-wire laser TIG composite welding gun. The portable double-wire laser TIG composite welding gun for the marine thin plate is suitable for manual welding of the marine thin plate of 0.7 mm-6mm within the assembly clearance of 2mm, an intelligent control system and the portable design are combined, so that equipment is easy to operate on site, a welding operator can adjust an interface according to parameters on a handheld handle, and the welding efficiency is improved. The working parameters of the TIG welding gun, the laser welding gun and the welding speed controller are adjusted, path control in the welding process is achieved through the auxiliary movement device, the welding wire cladding amount of single-pass welding can be increased, the production efficiency and welding seam forming are improved to a large extent, and efficient, high-quality and low-deformation welding is achieved.

The invention provides a pumpback static shaft shoulder friction stir welding device. A static shaft shoulder fixing mechanism, a movable shaft shoulder fixing mechanism and a stirring needle transmission mechanism are sequentially arranged from outside to inside in a sleeving mode and are all of a conical structure; the large round end of the static shaft shoulder fixing mechanism is connected with the static end face of the friction stir welding main shaft, and the small round end is connected with the static shaft shoulder body. The large round end of the movable shaft shoulder transmission mechanism is connected with the rotating end face of the friction stir welding main shaft, the small round end of the movable shaft shoulder transmission mechanism is connected with the first end of the movable shaft shoulder body, and the second end of the movable shaft shoulder body is sleeved with the static shaft shoulder body. The large round end of the stirring needle transmission mechanism is connected with the welding main shaft withdrawing shaft, and the stirring needle body is arranged between the small round end and the movable shaft shoulder; the end of the stirring needle body sequentially penetrates through the movable shaft shoulder body and the static shaft shoulder body and is exposed out of the static shaft shoulder body. The welding precision and the welding quality of products with small thicknesses are improved, the production efficiency of the products is improved, and the labor intensity of workers is reduced.

The invention relates to the technical field of welding, and discloses a photovoltaic module frame profile welding device which comprises a bottom plate, the upper surface of the bottom plate is fixedly connected with a feeding mechanism and a first reversible deformation mechanism, and the outer surface of the feeding mechanism is slidably connected with a first single frame and a second single frame. The outer surface of the feeding mechanism is fixedly connected with a second reversible deformation mechanism, the first reversible deformation mechanism comprises a screw rod sliding block device, the screw rod sliding block device is fixedly connected with the upper surface of the bottom plate, the outer surface of the screw rod sliding block device is fixedly connected with a second screw rod, and the outer surface of the second screw rod is rotatably connected with a second box body; an I-shaped block is arranged for auxiliary supporting, so that the welding quality and the profile shape precision can be guaranteed; the I-shaped cross section of the I-shaped block has the characteristics of high strength and the like, so that the I-shaped block can be reliably supported, and during actual welding, the I-shaped block can uniformly distribute weight, resist stress, limit deformation and ensure the quality of the frame.

This invention provides a flexible vehicle body assembly system and a vehicle body manufacturing production line, belonging to the field of vehicle body manufacturing technology. The flexible vehicle body assembly system can interface with intelligent vehicles and their bodies, including an assembly station, a lower body positioning device, a side positioning device, a rear positioning device, and a sliding device. The assembly station includes two bases, each with a first and a second column. The two lower body positioning devices are symmetrically distributed on both sides of the intelligent vehicle, and at least partially located on the inner sides of the two bases. The side positioning devices are connected to the first and second columns of the same base, and the rear positioning devices are connected to the two second columns. The sliding device is connected to the base to adjust the relative positions of the two first columns, the two second columns, and the first and second columns. This invention can establish a global coordinate vehicle body positioning system, providing high-precision positioning for different vehicle models, improving the accuracy of assembly dimensions, and enabling cross-architecture vehicle mixed-flow production.

The invention discloses a titanium alloy welding method for realizing a high-quality joint at an ultralow temperature, and belongs to the field of titanium alloy welding. The invention aims to solve the technical problem of low joint quality in the existing diffusion welding method. According to the method, the to-be-welded surfaces are ground and then polished till the root mean square roughness Rq is not larger than 1.5 nm or the arithmetic mean roughness Ra is not larger than 1.0 nm, the maximum roughness depth Rmax is not larger than 50 nm, and through the multi-heat-source diffusion welding technology of pulse current and radiation heating, the microcosmic good welding effect without hole defects at the ultralow temperature of 450-550 DEG C is achieved. According to the method, the welding rate of a welded joint after welding is nearly 100%, high-quality welding is achieved, the joint has obvious yield and plastic fracture, and the tensile strength can reach 826.8599 MPa.

This application relates to a welding fixture for chemical pipelines, belonging to the technical field of pipeline welding equipment. To solve the problem of difficult positioning of chemical pipelines, it includes a frame with two pipe support brackets arranged opposite each other. A clamping mechanism is provided on the frame corresponding to each pipe support bracket. Positioning mechanisms are respectively provided on both sides of the frame. Each positioning mechanism includes a propulsion cylinder, a positioning push plate, and a positioning cone. The propulsion cylinder is connected to the frame, the positioning push plate is connected to the output end of the propulsion cylinder, and the positioning cone is connected to the positioning push plate. The positioning cone is inserted into the inner diameter of the pipeline for radial positioning. This application effectively solves the positioning deviation problem caused by unreasonable structural design of existing welding fixtures, improves the accuracy of pipeline docking positioning, and provides a reliable guarantee for high-quality welding.