41results about How to "Achieve remanufacturing" patented technology

The invention discloses a method and a device for remanufacturing a sheet metal welding piece by utilizing laser and relates to the field of non-traditional machining. The method comprises the following steps of: closing cracks by employing continuous laser re-molten cracks and neighboring area; then heating the surface of the joint of the sheet welding piece in a dynamic strain ageing temperature area; and performing laser shock processing on the surface of the joint of the sheet welding piece by utilizing a double-sided laser impact method. According to the device, the sheet welding piece can be compositely strengthened and remanufactured, the cracks on the surface of the welding line are closed, the air holes inside the welding line are eliminated, the tensile strength of the joint of the sheet welding piece is improved, and the service life of the sheet welding piece is prolonged.

The invention discloses a construction method of an adaptive dynamic design platform aiming at a mechanical device. The construction method mainly comprises the steps of: erecting an adaptive service platform suitable for a target mechanical device, performing tracking dynamic design on a target product, and performing variable optimization design on a target model machine; and erecting a PDM (product data management) service platform as a link of the innovative service integration platform to couple the adaptive service platform, the tracking dynamic design and the variable design into a whole. The construction method can be promoted in other design and manufacturing industries, the prevailing significant problems such as long cycle of design and production, instable design quality, large amount of repeated work of personnel and high cost can be solved, experience of design and manufacturing can be accumulated and repeatedly used, reconstruction and remanufacturing can be realized, waste of resources can be reduced, seamless integration of demand conversion, product design, analysis, simulation and manufacturing can be realized ultimately, the structure of the target product can be optimized, the performance of the target product can be stabilized, rapid transformation can be realized, and the core competitiveness of enterprises can be enhanced.

The invention relates to a reparation method of an aluminum busbar, in particular to an in-situ spraying reparation method of a horizontal aluminum busbar in an electrolytic plant. The method comprises firstly checking conditions of the busbar, performing leveling processing on the surface of the busbar, then performing preprocessing on the surface of the busbar to enable the preprocessed matrix surface to reach Sa 2.5-3.0 grade and to expose uniform metal natural color, performing rough processing on the surface of the busbar to enable roughness or riveting line depth of the surface to reach 40-80mu m, utilizing the electric arc spraying technology to spray a base layer and a working layer on the surface of the damaged busbar, finally utilizing a movable suspension milling cutter to mill the coating surface, and performing clean and smooth processing to complete the reparation of the horizontal aluminum busbar. The method can be achieved in the electrolytic plant, can effectively avoid interference of a strong magnetic field, reduces labor strength, has less consumption of labor and materials and simple and fast operation, can repair surface defects of the horizontal busbar serving as the upper structure of an aluminum cell, and can reproduce a repairing layer with excellent abrasion performance.

The invention relates to the technical field of welding and discloses a technology of carrying out surfacing of aluminum bronze on the inner surface of a coal mine hydraulic bracket 27SiMn oil cylinder. The technology comprises the following steps: 1, evaluating the condition of the inner surface of the coal mine hydraulic bracket 27SiMn oil cylinder; 2, removing an accessory, rust and dirt; 3, boring the corrosion layer on the inner surface of the oil cylinder; and 4, adopting a HK 200 aluminium bronze welding wire with the diameter being 1-1.5 mm as the welding material, and adopting inert gas arc welding to weld the inner surface, except a thread, of the oil cylinder through a hot wire nonmelt electrode. With adoption of the technical scheme, the technology has the following benefits: the scrapped or to-be-scrapped hydraulic bracket 27SiMn oil cylinder is recycled, the original using performance of the oil cylinder is recovered through the technology, so that remanufacturing of theoil cylinder is reached; and the welding quality is stable, the technology completely replaces the electroplating technology to realize the remanufacturing effect, so that the production cost is greatly reduced, the production efficiency is improved and the service life of the oil cylinder is greatly prolonged.

The invention discloses an engine crankshaft circular bead laser cladding repairing device and method solving the problem that in the prior art, crankshaft circular bead repairing is limited and having the beneficial effects of being convenient to operate and low in cost. According to the scheme of the engine crankshaft circular bead laser cladding repairing device and method, the engine crankshaft circular bead laser cladding repairing device comprises a crankshaft cladding clamp used for clamping a crankshaft and a three-axis driving mechanism arranged on one side of the clamp support; the crankshaft cladding clamp comprises a chuck used for driving the crankshaft to rotate around the axis of the crankshaft, the chuck is supported through a clamp support, and the crankshaft cladding clamp can ascend and descend so as to drive the crankshaft to incline in the set angle range; the three-axis driving mechanism comprises a supporting frame, the supporting frame supports a first sliding rail, the first sliding rail is provided with an X-direction guide rail capable of moving along the first sliding rail, the X-direction guide rail is provided with a Y-direction connecting rod capable of moving along the X-direction guide rail, the Y-direction connecting rod is provided with a Z-direction lead screw capable of moving up and down relative to the Y-direction connecting rod, and the Z-direction lead screw is fixed to a laser cladding head.

The invention provides a remanufacturing method of polished rods of oil pumping units. The remanufacturing method comprises the steps that step 1, the abrasion section of a polished rod of a certain oil pumping unit is cut off to obtain an intact section of the polished rod of the oil pumping unit; step 2, a connecting section matched with the abrasion section is cut off from the polished rod of another oil pumping unit; step 3, friction welding connection is carried out on the intact section obtained in the step 1 and the connecting section obtained in the step 2; and step 4, post-processingis carried out on the friction welding connection part in the step 3. According to the remanufacturing method, abrasion parts of the polished rods are removed by using existing waste polished rods andadopting a sectional material obtaining method, non-abrasion parts of the polished rods are spliced to the design size by friction welding, and surface processing is carried out to meet the size requirement of the polished rods. The remanufacturing method is characterized in that friction welding is adopted to carry out splicing welding, the bonding part is metallurgical bonding, and through process control, the splicing welding is carried out below the phase change point of a material, so that embrittlement of a heat affected zone is reduced, and the remanufactured polished rods can be recycled by turning waste into treasure.

The invention discloses a plate core embedded type stainless steel combined filter plate and a corresponding compartment type filter mechanism. The combined filter plate comprises a square plate frame, a detachable filter disc and a filter disc bracket, has a symmetrical double-sided structure and is made of a stainless steel material; the key points of the innovative scheme are as follows: a filter plate is improved into a cavity overhead type, and a plate core is replaceable; the filter disc support is embedded in a cavity of the square plate frame, the detachable filter disc is installed onthe filter disc support, namely, the filter disc is erected by the support to form a cavity overhead layer, and the flow guide net groove is not blocked any more. When the filter disc is corroded anddamaged, the filter disc can be detached and replaced to prevent the whole filter plate from being scrapped; the invention has the advantages that high temperature resistance and high pressure resistance are achieved, the cavity is overhead and unblocked, liquid discharging is fast, and the plate core is replaceable. The compartment type filter mechanism uses the combined filtering plate, so thatthe technical problems that a stainless steel filtering plate flow guide net groove is easy to block, a plate core cannot be partially replaced, and remanufacturing cannot be realized are solved; theoverhead cavity is formed, so that the filtering efficiency and effect are improved, the plate core is replaceable, precious resources are saved, and the use cost is reduced; and the invention is thedevelopment direction of remanufacturing of the stainless steel filter press.

The invention discloses an engine crankshaft belonging to the technical field of engine remanufacturing. The engine crankshaft comprises a plurality of shaft necks, wherein each shaft neck comprises a shaft neck body, wherein flanges are arranged at two ends of the shaft neck body, a circular bead is arranged between each flange and the shaft neck body, a laser cladding coating is formed on the outer surface of the shaft neck body, a gap is left between the edge of the laser cladding coating and the corresponding circular bead, and nitriding layers are formed on the end surfaces, close to the shaft neck body, of the flanges, the circular beads and the gaps. The invention also discloses an engine crankshaft remanufacturing method. The remanufacturing method comprises the steps of removing a nitration layer or an oxidation layer on the surface of the shaft neck, forming the laser cladding coating, forming the nitration layer and restoring the product size. By using the remanufacturing method, the engine crankshaft with a defect on the shaft neck can be repaired under conditions of ensuring the safety factor and the whole performance of the crankshaft to meet the using requirements, the precision requirement of the crankshaft neck can be restored and the remanufacturing of the crankshaft of a high-speed engine can be achieved.

The invention discloses a spare part micro-arc pulse plasma rapid additive manufacturing device and method. The rapid additive manufacturing device comprises a spray gun track control mechanism, a pulse micro-arc plasma cladding platform, a displacement mechanism, an electromechanical integrated console and a welding gun path planning numerical control display table. The rapid additive manufacturing device has the advantages of being convenient to operate, high in environment adaptability and capable of achieving large-range and high-temperature-domain part additive manufacturing, the technology can achieve rapid manufacturing of metal parts, the technology is suitable for rapid additive generation of field environment spare parts, the emergency maintenance guarantee capacity is effectively improved, and the technology can also be applied to rapid forming of high-melting-point difficult-to-machine metal parts.

The invention relates to a Ni-Cr-Al nanometer welding layer and a preparation method; the Ni-Cr-Al nanometer welding layer comprises the following components in mass percent: 44 to 59% of Ni, 34 to 41% of Cr, 7 to 9% of Al and 1 to 2% of additive; the additive is SiC; the method comprises the following steps: preparing Ni, Cr and Al all into a nanosphere in a gas atomization method, then, uniformly mixing the nanosphere with ground additive to prepare into a NiCrAl nanometer welding wire; at last, welding the NiCrAl nanometer welding wire on the surface of a part to form the NiCrAl nanometer welding layer. According to the Ni-Cr-Al nanometer welding layer and the preparation method, by adopting reasonable materials and proportion, the shortages of poor bonding strength of the welding layer, high porosity, relatively poor wear resistance and corrosion resistance in the prior art are solved; the remanufacturing of the to-be-repaired part is realized and the waste of resources is prevented; meanwhile, the property of the repaired part is improved and the usability of the part is prolonged.