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295results about How to "Reduce deformation" patented technology

Welding method of tungsten target material component

The invention discloses a welding method of a tungsten target material component. The welding method comprises the following steps: providing a tungsten target material and a copper back plate; turning threads in the welding surface of the tungsten target material; forming a groove in the copper back plate; mounting the tungsten target material in the groove; welding the tungsten target material and the copper back plate by a hot isostatic pressure method. Through the use of the welding method, the threads are turned in the welding surface of the tungsten target material, the groove is formed in the copper back plate, and the tungsten target material and the copper back plate are mounted together, so that the tungsten target material is positioned in the groove; then welding by the hot isostatic pressure method is performed, in the welding process, the deformation quantity of the tungsten target material is small, and a fragmentation phenomenon not easily occurs; in addition, because of the threads, the area of the welding surface of the tungsten target material is enlarged, and the welding strength of the tungsten target material component is improved; after welding, the threads are embedded in the copper back plate from the welding surface of the tungsten target material, so that the welding strength of the tungsten target material component is further improved.
Owner:KONFOONG MATERIALS INTERNATIONAL CO LTD

Metal powder material additive manufacturing method under ultrahigh pressure inert gas shielding

ActiveCN105252000AImprove internal qualityReduce deformationIncreasing energy efficiencyManufactured formTitanium alloy
The invention provides a metal powder material additive manufacturing method under ultrahigh pressure inert gas shielding. A pressurized cabin is designed outside material additive manufacturing forming equipment and communicated with the material additive manufacturing forming equipment, before parts are printed by high-energy laser beams/electron beam layer by layer according to a scanning path, inert gases such as Ar and He are injected into the pressurized cabin, and the high pressure in the pressurized cabin and the material additive manufacturing forming equipment is kept all the time. By means of the material additive manufacturing method under ultrahigh pressure inert atmosphere, high-property metal parts are directly manufactured, and the method is particularly suitable for material additive manufacturing of active easily-oxidized metal such as high temperature alloy and titanium alloy. The method has the following remarkable advantages that (1) the inner qualities of the metal parts are improved; (2) deformation and cracking phenomena during printing are reduced; (3) the compactness of the metal printed parts is improved to a certain degree; (4) invasion of harmful gases is effectively prevented during printing.
Owner:ADVANCED FOR MATERIALS & EQUIP

Dual-trimming door pocket edge banding machine

The invention discloses a dual-trimming door pocket edge banding machine which comprises a machine body, wherein two first supporting platforms that are arranged left and right are connected to the upper surface of the machine body, a conveying belt group is arranged on each first supporting platform, the upper parts of the two first supporting platforms are provided with a supporting frame, the supporting frame is internally provided with two first brackets arranged left and right, a pressure wheel set is connected to each first bracket, and the two pressure wheel sets respectively correspond to one conveying belt group; the part of the machine body, which is positioned at the rear part of the supporting frame, is sequentially provided with a pre-milling device, a gluing and facing device and a belt-cutting device from left to right; the two conveying belt groups are connected through a coupling device, a fixing plate is connected to the upper surface of the coupling device, and a plurality of pulleys arranged left and right are arranged on the fixing plate; and the part of the machine body, positioned between the belt-cutting device and one end of the fixing plate, is provided with a first trimming device, the rear part of the machine body is provided with a second supporting platform for supporting a second trimming device and a slotting device. The invention has the advantages of improving working efficiency and reducing labor intensity.
Owner:江苏盐城苏凌机械有限公司

Enclosed loading framework for multidimensional bearing test on large-scale structural member

The invention belongs to a design method and particularly relates to an enclosed loading framework for a multidimensional bearing test on a large-scale structural member. The enclosed loading framework comprises a rigid foundation and further comprises four columns an upper cross beam, wherein the rigid foundation and the upper cross beam are respectively connected with the columns through screws to form a generally hollow cube shape, and the upper cross beam is provided with a z-direction oil cylinder. The enclosed loading framework is advantaged in that the enclosed loading framework is an internal force self-balancing system capable of improving measurement precision, multidimensional cooperation loading is further realized, and the enclosed loading framework is further equipped with multiple hydraulic oil cylinder driving systems to realize x, y and z multidimensional pulling, pressing and twisting simulation loading of a large-scale sample. For a small sample, only a pulling, pressing or twisting single condition test can be realized through a traditional design method. The enclosed loading framework can realize the cooperation loading test on a large-scale structural member under the pulling, pressing and twisting composite bearing condition.
Owner:SOUTHWESTERN INST OF PHYSICS +1

Three-dimensional visible physical watermark copyright anti-counterfeit marking method for 3D printed model

InactiveCN108830776AAvoid modificationReduce deformationImage data processing detailsCommerceSurface reconstructionMinutiae
The invention discloses a three-dimensional visible physical watermark copyright anti-counterfeit marking method for a 3D printed model. The method comprises firstly calculating the saliency value ofthe model and extracting a non-saliency region as an editing region of a visible watermark; then performing planar parameterization on the 3D model to obtain a 3D-to-2D mapping relationship and calculating the normal map of the model; selecting watermark image information to be edited and locating the watermark image information to be edited in the non-saliency region of the normal map; solving anew normal vector according to the embedding strength of the watermark, and performing a surface reconstruction algorithm based on a kernel function to map a 2D watermark image to the surface of the 3D model; and finally adding a visible physical watermark to the surface of the 3D printed model. The method can automatically select a low-detail region for surface editing, effectively avoids the modification of the visible watermark to important features of the model, provides a reconstructed curved surface with low deformation degree by using the surface reconstruction algorithm based on the kernel function, and can fuse with the grids of a non-editing region.
Owner:ZHEJIANG UNIV OF FINANCE & ECONOMICS

Method for reducing deformation quantity of workpieces after laser cladding

The invention relates to a method for reducing the deformation quantity of workpieces after laser cladding. The method comprises the steps that light outlets of two semiconductor lasers are placed downwards in parallel, two lasers are emitted in the same vertical plane in the same direction in parallel and are focused respectively, the focusing position of a second light spot is changed through the reflection action of a reflector set behind a focusing lens of a second light path, the two lasers act on the same work surface, a first light spot is used for cladding of the surface layer of material, the second light spot is used for secondary fusion of the surface layer of the material subjected to the cladding treatment, and therefore uneven portions on the surface of the material can be repaired. In the machining and repairing process, the size of the first light spot is smaller than the size of the second light spot. According to the method, the mode that only one light spot of a traditional laser cladding light source can be used for machining is changed, the two lasers are used for machining, the surface evenness of a cladding layer of the machined material is remarkably optimized, the machining quality and efficiency of laser cladding are greatly improved, and the subsequent machining is reduced.
Owner:江苏华博数控设备有限公司

Connecting structure for nested composite sections

The invention discloses a connecting structure for nested composite sections. The connecting structure comprises an upright post and a cross beam which are respectively crossly nested by elongated members to form a thin-wall cylinder, and is characterized in that: the upright post and the cross beam are vertically connected through a connecting joint; the connecting joint comprises a bottom plate and a lug boss, wherein a hole cavity is formed on the lug boss along the direction vertical to the bottom plate; the lug boss and the cross beam are in inserted connection, and the bottom plate are connected with the side walls of the upright post through a fastening piece; convex ribs are molded on an outer side wall of the upright post along the length direction; a guiding grooves which are matched with the convex ribs are formed at the bottom of the bottom plate; and the outer side wall of the upright post is also provided with protrusions which prop against the lower edge of the bottom plate. Compared with the prior art, the connection structure has the advantages that: due to vertical connection of the detachable connecting joint, the bottom plate of the connecting joint and the upright post are connected by irregular bolts, and the connecting structure realizes detachable connection, and also can guarantee tight adhesion of the side walls of two sides of the upright post with the composite structure; and seamless connection between the side walls of two sides of the upright post is realized, and the strength and rigidity of the upright post are obviously improved.
Owner:朱建华
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