30results about How to "Neat seams" patented technology

The present invention is developed on the basis of available continuous HF fusion welding machine and fusion welding method and has improved long non-ferrous metal electrode plate. Structurally, the present invention has flexible material inside the longitudinally open-mouthed section, conducting copper sheet on the flexible material and insulating layer on the conducting copper sheet; as well as wheel protecting belt below the movable HF electrode plate heat jointing and settling assembly. The present invention has the advantages of the complete fusion and adhering of the jointed material, no adhesion between the HF electrode plate heat jointing and settling assembly and the jointed material and high welding quality.

The invention provides a building quake-proof outer wall hanging plate, which comprises a plate body, wherein at least two groups of first embedded connecting elements are arranged on the upper part of the inner side of the plate body, and are embedded inside the plate body; an installing seat is arranged in the position, corresponding to each first embedded connecting element, of the inner side of the plate body; the installing seat comprises a first installing plate and a second installing plate which are vertical to each other; a strip-shaped hole is formed in the first installing plate; a first screw bolt is arranged in the strip-shaped hole, and is connected with a screw hole formed in the first embedded connecting element through screw threads. The building quake-proof outer wall hanging plate has the advantages that the installing position between a framework beam and the outer wall can be adjusted; the requirement on the precision of the embedded elements during the construction is reduced.

The invention provides a non-taper laser machining method and machining device. According to the non-taper laser machining method and machining device, the problems of uncontrollable cutting slit taper, large slit roughness and low quality in an existing laser cutting mode, and laser non-taper cutting is realized. The non-taper laser machining method comprises the following steps that (1) two-dimensional shaping is carried out on a laser beam; a Gauss light spot of the laser beam is shaped into a rectangular uniform light spot of a two-dimensional plane; (2) three-dimensional shaping is carried out on the laser beam; the laser beam obtained in the step (1) is shaped into a long focal depth rectangular flat top laser beam; and (3) laser machining is carried out; the long focal depth rectangular flat top laser beam obtained in the step (2) is used for machining.

The invention provides a hot-pressing device for panel splicing used in furniture production, which relates to the technical field of furniture production equipment, to solve the problem of splicing problems due to the small heat flux at the splicing position during the splicing process of panels, especially during hot-press splicing. The heating range is wide, and it is difficult to accurately and quickly realize hot-press splicing. In addition, during the splicing process, fixtures are required to clamp the two panels to be spliced. The more difficult problem includes the hot pressing table; the left end edge and the right end edge of the top plane of the hot pressing table are respectively vertically slid upwards and installed with end sealing mechanisms. In the present invention, since the middle part of the bottom plane of the hot pressing table is provided with a rectangular ventilation slot, and due to the existence of the deflector block, the air below can be prevented from entering upwards, and only the hot air above can flow downward.

The invention discloses a thin-steel-plate continuous tailor-welding device and a tailor-welding method. The tailor-welding device comprises a conveying roller way, centering devices and vacuum locating devices, wherein the conveying roller way is used for conveying thin steel plates to be welded, the centering devices are arranged at the two sides of the conveying roller way, and the vacuum locating devices are arranged below the thin steel plates to be welded. The tailor-welding method comprises the step of realizing the welding of the thin steel plates by using the thin-steel-plate continuous tailor-welding device. According to the thin-steel-plate continuous tailor-welding device and the tailor-welding method, the welding process of the thin steel plates can be stable and cannot be subjected to deforming and warping, weld seams are orderly after welding is completed, the welding speed is increased, the quality of welding is good, and the smoothness of the welded steel plates is good.

The invention belongs to the technical field of welding materials, and particularly involves a low-hydrogen iron powder electrode and preparing method. The coating of low-hydrogen iron powder electrode is made up of following parts by weight: 47 to 49 parts of marble, 13 to 15 parts of fluorite, 2 to 4 parts of ferrosilicon, 1.5 to 2.5 parts of titanium dioxide, 1.5 to 2.5 parts of wood powder, 14 to 16 parts of rutile, 4 to 6 parts of feldspar powder, 6 to 8 parts of silica flour, 4 to 6 parts of mica powder, 12 to 14 parts of titanium valve, and 19 to 21 parts of iron powder. The low-hydrogen iron powder electrode has the advantage of overall good appearance of weld seam, parallel sideline and knitting well with mother metal. Weld seam is neat for ripple, and the height of weld seam is close to. The surface of weld seam does not have the disadvantage of pore-free, crackle, slag inclusion, undercut, and overlap. The welding slag after welding rod is easy to fall off.

The invention discloses a crane main beam. The crane main beam comprises a first web, a second web, reinforced frames, a top plate and a bottom plate. The top plate is connected with the top of the first web, and the bottom plate is connected with the bottom of the second web. The reinforced frames are arranged in the main beam at intervals and are fixedly connected with the first web, the second web, the top plate and the bottom plate respectively. The first web and the second web are each provided with a camber. The first web and the second web are both formed in a sequence welding manner. Staggering distances are set between segmented weld joints of the first web and between segmented weld joints of the second web. Due to the fact that the first web and the second web of the main beam are formed in the sequence welding manner and a certain staggering distance is kept between every two adjacent segmented weld joints of the two webs, stress of the main beam is dispersed because of arrangement of the weld joints; due to a new machining technology, the rigidity of the main beam is enhanced, and flexibility caused when a long-span main beam generates bending moment because of dead weight is effectively prevented.

The invention discloses an H-shaped steel welding device and a welding process thereof. The adopted technical scheme is as follows: the H-shaped steel welding device comprises an input part, a welding part and an output part and is characterized in that the welding part comprises a flange slab clamping and positioning device, a web plate conveying device and at least one mechanical arm, wherein the mechanical arm is mounted on a welding station and can move under the drive of the welding station, the mechanical arm is further connected with a mechanical head, and the mechanical head can be replaced by any of a laser scanning head, a welding head or a cutting head. The H-shaped steel welding device has the beneficial effects that the H-shaped steel welding device is high in degree of welding automation, uniform and neat in weld joints, and high in strength, the whole process is completed automatically under the control of a program, laser scanning, welding and cutting processing can be sequentially completed by adopting the mechanical arm, the working efficiency is greatly improved and the cost can be saved by above 20%.

The invention discloses a novel efficient welded plate heat exchanger. The novel efficient welded plate heat exchanger comprises first Z-shaped heat exchange plates, second Z-shaped heat exchange plates and a shell. The long edge of each first Z-shaped heat exchange plate is folded outwards. The short edge of each second Z-shaped heat exchange plate is folded outwards. The first Z-shaped heat exchange plates and the second Z-shaped heat exchange plates are arranged in the shell from one side of the shell to the other side of the shell in sequence alternately, so that first fluid passageways and second fluid passageways which are mutually spaced are formed. The folded edges of the first Z-shaped heat exchange plates are fixedly connected to the upper end face and the lower end face of the shell in a sealed mode. The folded edges of the second heat exchange plates are fixedly connected to the side faces of the shell in a sealed mode. A first fluid inlet and a first fluid outlet are formed in the upper end face and the lower end face of the shell respectively and communicated with the first fluid passageways. A second fluid inlet is formed in one side face of the shell, a second fluid outlet is formed in the side face, opposite to the second fluid inlet, of the shell, and the second fluid inlet and the second fluid outlet are communicated with the second fluid passageways. The novel efficient welded plate heat exchanger is tightly sealed and is high in pressure bearing capacity and higher in heat transfer efficiency; the application range is wide, modularization can be achieved, and the engineering adaptability of the novel efficient welded plate heat exchanger is improved.