41results about How to "Achieve remanufacturing" patented technology

The invention relates to a roll stand (1) with a number of rollers (2, 3) and with an incoming guide (4) and / or an outgoing guide (5) which is / are fixed on the roll stand (1) before or after the rolling gap (6) in the rolling direction (W), respectively, and which is / are adjustably arranged in the direction perpendicular to the axis (7) of the rollers (2, 3) and perpendicular to the rolling direction (W), particularly in the vertical direction (V). To minimize damage in case of an accident, the invention provides for a predetermined breaking point (9) in the fixing means (8) which fixes the incoming guide (4) and / or the outgoing guide (5) on the roll stand (1).

The present invention is a high-energy beam additive manufacturing method for a suspended structure of a metal part, comprising the following steps: step 1: establishing an overall forming process model of the metal part; step 2: splitting the overall forming process model; step 3: determining the forming of each suspended structure The fixed structure, shape and size of the supporting substrate; Step 4: According to the forming direction, first form the first part of the model structure, after the forming is completed, install and fix the first supporting substrate through the fixed structure corresponding to the first suspended structure; then continue to form the second Part of the model structure, while completing the forming of the second part of the model structure, the forming of the first suspended structure is realized based on the first supporting substrate; finally, the subsequent part of the model structure and the forming of the suspended structure are completed in the same way to obtain the whole Metal parts; step 5: heat-treating the formed metal parts and removing the support substrate, base material and spare parts to obtain an all-metal additive manufacturing component with a suspended structure.

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.

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 remanufacturing and repairing process and assembly line of a permanent magnet motor with glued magnetic poles, comprising the following steps: firstly, the end cover of the permanent magnet motor to be repaired is opened, and the outer surface of the stator shell is heated until the glue melts and fails, Beat the magnetic pole inside the stator casing to separate the magnetic pole from the stator casing; cool the stator casing after separation, and glue the side where the new magnetic pole is in contact with the stator casing; the positive and negative magnetic poles have been stained with glue alternately glued to the inner wall of the stator housing. The invention also discloses a permanent magnet motor remanufacturing and repairing assembly line with glued magnetic poles, which includes a rotating fixing device, a heating device, a cooling pool, a conveying device and an operating table. The invention can realize the complete detachment of the magnetic pole and the stator shell, prevent the magnetic pole from remaining in the stator shell, and at the same time not damage the stator shell, and realize the remanufacturing production of the permanent magnet motor.

The invention discloses a reproducing method of a main bearing hole of an engine cylinder block assembly, belongs to the field of engine reproducing technologies, and is characterized in that a combination surface of a main bearing seat of a cylinder block is taken as a reference, an amount of finish of 0.02-0.10 mm is eliminated from the combination surface of the main bearing seat of the cylinder block, and requirements of a form and location tolerance of the main bearing seat of the cylinder block are ensured; a combination surface of a main bearing seat of a crankcase is taken as a reference, an amount of finish of 0.02-0.10 mm is eliminated from the combination surface of the main bearing seat of the crankcase; the cylinder block and the crankcase are assembled together through a main bearing bolt so as to form a cylinder block assembly; each main bearing hole of the engine cylinder block assembly is honed, and honing of the main bearing holes needs to be synchronously carried out so as to ensure each technological requirement of the main bearing holes of the engine cylinder block assembly. The reproducting method has the advantages of simple process, no potential hidden trouble of a brush plating manner, and capability of realizing reproduction of the engine cylinder block assembly with the problem of the size out-of-tolerance of the main bearing holes.

The invention discloses a special intelligent repair machine for a railway coupler knuckle which comprises a base, stand columns, a slide rail, a coupler knuckle positioning support, a welding assembly, a milling assembly and a control system. The slide rail is installed on the base through the stand columns. The coupler knuckle positioning support is arranged under the base and penetrates out of the base to be used for fixing a coupler knuckle. The special repair machine is high in practicability, high in intelligence degree and high in efficiency, welding repair and milling forming are integrated, and the procedure that the coupler knuckle is machined on a coupler knuckle profiling milling machine special for coupler knuckles after welding repair is completed is omitted, the welded workpiece can be repaired continuously and formed at a time, materials and manpower are saved, welding materials are saved by 70% or over, the maintenance cost is lowered, railway vehicle coupler knuckle detecting and remanufacturing are achieved, and the flexibility of coupler knuckle repair is greatly improved while the intelligence level of coupler knuckle repair is increased.

The invention relates to a laser heat treatment process for a steel ring, comprising the following steps: (1) pretreatment; (2) flaw detection to determine the area; (3) observing and measuring the repaired range of the steel ring surface, and carrying out the process in a control cabinet according to the measurement results Programming, written into the PLC control system; (4) Turn on the gas source to output carbon dioxide, nitrogen, and helium; (5) Turn on the laser, adjust the spot width to 9mm, and use WC‑12Co nanomaterials as cladding materials to lay thickness 0.5mm; (6) post-processing. The invention adopts the method of laser cladding, cladding WC-12Co nano-materials made according to a specific ratio on the surface of the steel ring to form a cladding layer, which improves the mechanical properties of the steel ring while realizing the repair of the steel ring , that is, the hardness, wear resistance, and toughness are all improved, realizing the remanufacturing of the steel ring, avoiding the waste of resources, and saving the maintenance and use costs of equipment.

The invention discloses a device for preparing an ultrahard abrasive particle layer by adopting an electric spark deposition method. The device comprises a working platform, a grinding wheel metal basal body and a grinding wheel basal body driving mechanism, wherein the grinding wheel metal basal body and the grinding wheel basal body driving mechanism are arranged on the working platform, the grinding wheel basal body driving mechanism is used for driving the grinding wheel metal basal body to rotate, a compression powder electrode is arranged at one side of the grinding wheel metal basal body, the compression powder electrode is arranged on a servo mechanism which can linearly move up and down in a reciprocating manner, a working solution nozzle is arranged at the other side of the grinding wheel metal basal body, a deposition power supply and control panel which can produce a discharging pulse is arranged at one side of the compression powder electrode, the anode of the deposition power supply and control panel is connected with the grinding wheel metal basal body, and the cathode of the deposition power supply and control panel is connected with the compression powder electrode. According to the device disclosed by the invention, the ultrahard abrasive layer can be deposited on the surface of the grinding wheel metal basal body, the problem that an old grinding wheel metalbasal body is difficult to recycle and is difficult to reproduce can be solved, and reproducing and green recycling of an ultrahard grinding wheel are realized.

The invention discloses a composite reinforcement method for TiC / TiB2 base metal ceramic on the surface of a roller, and belongs to the technical field of metallurgical machinery. The composite reinforcement method comprises the processing steps of: cleaning the roller; performing plasma spraying of nickel base alloy or overlaying the nickel base alloy on the cleaned roller; turning the roller according to requirements of a steel groove rolling system to meet the technical requirements; and cladding on the surface of the roller by using an electric spark deposition process to form the TiB2 / TiC base metal ceramic by using a TiB2 / TiC base metal ceramic electrode. The composite reinforcement method has the advantages that: the roller performance is greatly improved and fixed-roller-diameter rolling can be guaranteed, so that the process stability in a rolling process is guaranteed, meanwhile, the service life of the roller is greatly prolonged, the roller consumption is reduced, and the steel rolling operability and the steel surface quality are improved. Compared with processes such as overlaying and laser, the composite reinforcement method can be used for repairing of primary and intermediate rolling roller, and most importantly, the composite reinforcement method can be directly used for surface treatment of the roller of a finishing mill group, so that remanufacturing of the surface of the roller is realized.