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9results about How to "Guaranteed service performance" patented technology

Method for low temperature ion nitriding and applications thereof

ActiveCN119932462BFacilitated ionizationIncreased diffusion rateMetallurgyGlow discharge
The application discloses a low-temperature ion nitriding method and application. The low-temperature ion nitriding method comprises the following steps: under a selected temperature condition, ion etching treatment is performed on the surface of a workpiece by adopting an arc-enhanced glow discharge process, and then plasma nitriding treatment is performed on the workpiece by adopting an arc-enhanced plasma process to obtain a nitriding workpiece; wherein, a positive and negative alternating voltage is applied to the workpiece in the arc-enhanced plasma process. The low-temperature ion nitriding method provided by the application can realize nitriding at a lower temperature, effectively improves the deformation degree of the workpiece, and is widely applicable to surface strengthening of cutters, molds and metal parts.
Owner:NINGBO INST OF MATERIALS TECH & ENG CHINESE ACAD OF SCI

Precast raft foundation components, prefabricated raft foundations, and houses

This invention relates to a prefabricated raft foundation component, comprising a prefabricated square base plate and a cross beam prefabricated on the square base plate. The four ends of the cross beam extend to the four sides of the square base plate, and each of the four ends of the cross beam extends to form a flange plate. The surface of the flange plate is parallel to the corresponding side of the base plate, and bolt assembly holes and / or pre-embedded assembly bolts are provided on the flange plate. The invention also relates to a prefabricated raft foundation using this prefabricated raft foundation component and a building using this prefabricated raft foundation. This invention enables prefabricated construction of raft foundations, significantly shortening the construction period and reducing construction costs. The prefabricated raft foundation component can be prefabricated, transported, stored, and installed on-site as standard parts. The bolt assembly structure enables the splicing of adjacent raft foundation components, resulting in high reliability and stability of the connection structure and ensuring the service performance of the raft foundation.
Owner:SANYA SCI & EDUCATION INNOVATION PARK WUHAN UNIV OF TECH

A high-alloy high-performance rotary guide component and its manufacturing method

This invention discloses a high-alloy high-performance rotary guide component and its manufacturing method, belonging to the field of stainless steel technology. It solves the problems of poor microstructure uniformity and inability to simultaneously achieve mechanical properties and stress corrosion resistance in existing rotary guide components. The manufacturing method includes: smelting molten steel; preparing ingots; forging the ingots into steel billets using a high-speed forging machine after they are tapped from the furnace; heating and holding the steel billets; forging the steel billets into intermediate billets using a radial forging machine; water cooling the intermediate billets; forging the water-cooled intermediate billets a second time using a radial forging machine, followed by air cooling to obtain finished steel billets; straightening, machining, and shot peening of the finished steel billets to obtain rotary guide components; the composition of the rotary guide components, by mass percentage, includes: 18.00% ≤ Cr < 28.00%, 3.00% ≤ Mo ≤ 6.00%, 14.00% ≤ Ni ≤ 20.00%, 3.00% ≤ Mn ≤ 8.00%, Si ≤ 0.4%, Nb ≤ 0.25%, P ≤ 0.025%, S ≤ 0.02%, C ≤ 0.03%, N ≥ 0.3%, with the balance being Fe and other unavoidable impurities. The rotary guide components of this invention have fine and uniform grains and excellent mechanical and corrosion resistance.
Owner:CHINA IRON & STEEL RESEARCH INSTITUTE GROUP CO LTD

A method for full-automatic bending of a turnout curved rail piece

ActiveCN115921619BFully automatic bending processing realizedGuaranteed service performance
A method for fully automated bending of turnout curved rail components includes the following steps: Step 1: Positioning the rail component. An identification device is set up in the bending area. When the rail component moves to the bending area, it stops and is fixed by a fixing device. Step 2: Bending operation. A deflection measuring device is installed on the rail component to be bent, and the bending operation begins. The deflection of the rail component is measured in real time. After the rail component reaches a certain deflection, the bending equipment stops operating, and the rail component is unloaded. The bending equipment is a three-point bending system, and the anvil is a split structure. Step 3: Fine adjustment of the rail component. The deflection measuring device is unloaded, and a 3D scanner is set up in the bending area to scan the bent portion, modeling the curvature and levelness of the rail component. Based on the results, the levelness and curvature of the rail component are automatically fine-tuned. The method provided by this invention realizes fully automated processing of turnout rail components, saving manpower.
Owner:TIEKE JINHUA TESTING CENT CO LTD +4

A high-impact-resistant aluminum alloy material and a preparation method thereof

ActiveCN116552067BAchieve high strengthGuaranteed service performanceLaminationLamination apparatusCarbon fibersNonwoven fabric
The application provides a high-impact-resistance aluminum alloy material, which comprises an impact-resistant outer layer, a gradient transition layer and an energy-absorbing buffer structure inner layer, the impact-resistant outer layer is composed of an aluminum alloy material and a three-dimensional carbon fiber fabric, the gradient transition layer is composed of an aluminum alloy material and a ceramic reinforced non-woven fabric layer, and the energy-absorbing buffer structure inner layer is a porous foam alloy layer. The application further provides a preparation method of the high-impact-resistance aluminum alloy material, and the impact resistance of the aluminum alloy is improved through the cooperation of the three-layer structure of the impact-resistant outer layer, the gradient transition layer and the energy-absorbing buffer structure inner layer.
Owner:苏州创泰合金材料有限公司

Intelligent question answering method and device

The application discloses an intelligent question and answer method and device, and relates to the technical field of artificial intelligence. The method comprises the following steps: performing a recognition task on a user query by using a first model to generate a first recognition result and at least one corresponding confidence score, wherein the first model is a lightweight model; if each of the at least one confidence score is not lower than a corresponding preset confidence threshold, then based on the first recognition result, retrieving or generating response content from a knowledge base; otherwise, inputting the user query and its associated context information into a second model; the second model is a generative language model, and the parameter order of magnitude and semantic understanding ability of the second model are higher than those of the first model; performing semantic understanding on the user query by using the second model, and based on the associated context information, performing resolution and normalized rewriting on the reference components in the query to generate a second recognition result; and based on the second recognition result, retrieving or generating response content from the knowledge base.
Owner:IND BANK CO

A process method of pre-blasting and then processing for high-quality and high-efficiency processing of hard and brittle materials

PendingCN122253095AReduce the difficulty of cuttingGuaranteed service performanceAbrasive blastingCrazing
The application discloses a process method of sand blasting before machining for high-quality and high-efficiency machining of hard and brittle materials, and belongs to the technical field of precision machining of hard and brittle materials. In view of the problems of easy edge collapse, cracks and low machining efficiency of hard and brittle materials in cutting, sand blasting treatment is performed on the surface to be machined of a workpiece before mechanical cutting machining, a uniform micro-crack damage layer is formed in a controllable manner on the material surface layer by using the impact of high-speed abrasive particles, and the bonding strength of the surface layer is weakened; subsequent cutting machining is then performed, so that the material is mainly removed in brittleness and secondarily removed in ductility, the cutting force and tool wear are significantly reduced, defects such as edge collapse and cracks are inhibited, and the machining surface quality and machining efficiency are improved. The process is simple and has strong adaptability, and can be widely applied to the precision and high-efficiency cutting machining scenes of various hard and brittle materials such as ceramics, monocrystalline silicon and sapphire.
Owner:TSINGHUA UNIVERSITY +1