7results about How to "Improve welding rate" patented technology

The invention provides a method for preparing an aluminum-titanium target by combining roll bonding and warm pressing of a waste aluminum-titanium target, and belongs to the technical field of powder metallurgy. The preparation method comprises the steps that the waste aluminum-titanium target is pretreated to obtain aluminum-titanium target semi-finished products, N pieces of aluminum-titanium target semi-finished products are taken, slurry containing aluminum powder is sprayed to the surfaces of the N pieces or N-1 pieces of aluminum-titanium target semi-finished products, and after spraying is completed, the aluminum-titanium target semi-finished products are obtained; and laminating the N aluminum-titanium target semi-finished products to obtain a composite plate, carrying out ply rolling on the composite plate to obtain a composite target material, and carrying out warm pressing on the composite target material to obtain the aluminum-titanium target material. According to the preparation method, the target materials can be fully diffused in the warm pressing process, the influence of the surface flatness on diffusion is reduced through the pre-pack rolling treatment, the aluminum powder serves as a soft middle layer, the good buffering and joint filling effects are achieved, diffusion is promoted, and the target material welding rate is gt in an optimal scheme; 95%. According to the preparation method, the utilization rate of the target material is increased, the production cost of the target material is reduced, and recycling of the target material is achieved.

The invention relates to the technical field of titanium alloy thin-wall part machining, in particular to a printing plate type heat exchanger manufacturing process, a pressing tool, a core and a heat exchanger. The manufacturing process comprises the steps that S1, the cold side or the hot side of the heat exchanger core has a pressing function by changing the process end of an original welding plate; and S2, sealing head welding is conducted on one side of the welding plate piece with the pressure resistance completed, then the process end of the welding plate piece on the other side is machined to be in the standard size, the strength of the welded sealing head on the side is tested, and overall welding is conducted after the sealing head is qualified through inspection. The cold side or the hot side of the heat exchanger core has a pressing function by changing the process end of the original welding plate, so that the problems of deformation, unstable size, waste of raw materials, large consumption of working hours, high rejection rate and low production efficiency in the traditional processing are solved.

The present application belongs to the field of plastic forming of metal thin-walled components, and relates to a precise forming method of a thin-walled component with built-in reinforcing blocks. The present application cooperatively uses pre-forming and final forming processes, first performs hot forming to complete the manufacturing of preformed rib cells, and then performs SPF / DB process to complete the manufacturing of the final component. The existence of the pre-formed rib cells improves the stability of the reinforcing block fixation, improves the consistency of the welding rate and quality of the diffusion bonding between the reinforcing block and the skin, suppresses the final sagging and shrinkage defects of the component by controlling the protruding height size of the placed reinforcing block, and improves the overall forming quality of the component.

The invention belongs to the technical field of laser brazing, and particularly relates to an electromagnetic field-assisted laser brazing method, which comprises the following steps of: firstly, cleaning before welding, then presetting mixed brazing filler metal powder, coating the mixed brazing filler metal powder in a groove of a test piece, clamping the dried test piece between two electromagnetic coils on an electromagnet above an argon shield cabin workbench, and then, carrying out electromagnetic field-assisted laser brazing. A current clamp of a direct-current power source I is clamped at the two ends of a welding seam of a test piece, the direction of Lorentz force generated when current at the position of the welding seam penetrates through an electromagnetic coil is downward, so that the brazing filler metal is downwards filled into the brazing seam, then an argon protection bin is vacuumized and filled with argon, and finally laser brazing is conducted. A laser heat source is used for heating and melting brazing filler metal, meanwhile, a steady-state electric field and a steady-state magnetic field are coupled to form an electromagnetic composite field, the brazing filler metal in the molten state downwards fills a brazing seam under the action of directional Lorentz force of the electromagnetic field, flowing of the brazing filler metal in gaps is promoted, formation of air holes and other defects in the brazing seam is reduced, and the welding quality is improved.

The utility model discloses a liquid cooling plate, and particularly relates to a liquid cooling plate with a dispersed reinforcing rib structure, which comprises an upper cover plate and a lower cover plate, the upper cover plate is provided with a first reinforcing rib and a second reinforcing rib, the lower cover plate is provided with a plurality of third reinforcing ribs, and the first reinforcing rib and the second reinforcing rib are arranged on the upper cover plate. The multiple third reinforcing ribs are arranged on the lower cover plate in a scattered mode. According to the liquid cooling plate, various reinforcing ribs are reasonably arranged on an original runner cover plate, so that the structural strength of the cover plate can be effectively enhanced, and the structural strength and stability of a product assembly are further improved. And the dispersed reinforcing ribs can effectively eliminate or reduce internal stress generated during processing of the cover plate under the condition that the strength is guaranteed, so that the cover plate is smoother, and assembling and welding are facilitated.

The invention discloses a hollow hybrid network structure design and integral forming method, and relates to the technical field of multi-layer hollow structure design and precise hot forming thereof. The structural weight is reduced as much as possible while the structural strength is guaranteed, and lightweight design and manufacturing are achieved. The overall thickness change of the hollow hybrid network structure ranges from 0 mm to 60 mm, a double-four-layer structure is selected at the position with the thickness ranging from 30 mm to 60 mm, a four-layer structure is selected at the position with the thickness ranging from 15 mm to 30 mm, and a dot matrix structure is selected at the position with the thickness smaller than 15 mm. High structural strength is provided, the area with the thin edge is of the lattice structure, certain comprehensive performance is guaranteed, the overall weight is effectively reduced, few materials are used, and the light weight target is achieved. The advantages of different core layers are fully utilized, and the manufacturing targets of light weight, high efficiency and greenization are achieved to the maximum extent.

The utility model relates to the technical field of welding positioner, specifically relates to a connecting seat tooth seat double position windmill positioner, including base, the base is rotatably connected with the slewing base, the both sides rotatable connection of slewing base have installation arm, the both ends of installation arm are equipped with boss respectively, the inboard of boss is equipped with first mounting disc. The utility model not only saves the production line space, shortens the production line rhythm, can also satisfy the different angle of welding need, improves the welding rate of workpiece.