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35results about How to "Restore usability" patented technology

Technology of carrying out surfacing of aluminum bronze on inner surface of coal mine hydraulic bracket 27SiMn oil cylinder

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.
Owner:TIANJIN YINGYUAN WELDING TECH +1

Surface strengthening method of natural gas reciprocating compressor piston rod

InactiveCN108265290ASolving Surface Hardening ProblemsEasy to useMetallic material coating processesHeat-affected zoneEngineering
The invention provides a surface strengthening method of a natural gas reciprocating compressor piston rod. The method comprises the steps that (1) the thickness of a surface strengthening layer of the piston rod is designed and computed; (2) an adopted laser cladding material, cladding parameters and technique conditions are subjected to technique evaluation test verification; (3) according to the evaluation test conclusions, the surface of the piston rod is subjected to laser cladding, a cladding powder material comprises less than or equal to 0.2% of C, less than or equal to 0.5% of Si, less than or equal to 1.2% of Mn, 17-19% of Cr and 1.5-2.5% of Ni; (4) nondestructive testing is conducted; (5) machining is conducted; and (6) final inspection is conducted and comprises size inspection, precision and roughness inspection, hardness inspection and nondestructive inspection. The strengthening layer, treated through the surface strengthening method, of the piston rod surface is combined with a base material in a metallurgical mode, the strength is high, the hardness value is higher than 52 HRC, the width of a heat affected zone is smaller than 0.8 mm, in addition, the mechanical performance of the base material is not affected, and thus the method is suitable for surface strengthening treatment of the piston rod, can also be used for remanufacturing of waste pistons and is widein application prospects.
Owner:SHAANXI TIANYUAN MATERIALS PROTECTION TECH

Method for regenerating waste rolling oil

The invention belongs to the technical field of petroleum energy resources, and particularly relates to a method for regenerating waste rolling oil.The method comprises the following steps that firstly, the waste rolling oil is pretreated, a polyacrylamide solution, an alkali solution and a poly(diallyldimethylammonium chloride) solution are sequentially added into the waste rolling oil, stirring under heating and centrifugal separating are sequentially performed, and supernatant oil liquid is obtained; meanwhile, silica gel is modified through high-temperature roasting and a method of doping metal elements; lastly, column chromatography is performed on the supernatant oil liquid through the modified silica gel, wherein the supernatant oil liquid is poured into an assembled chromatographic column, the oil acceleratedly passes through the chromatographic column through a vacuum pump, and then regenerated base oil is obtained.The method has the advantages of being easy to operate, low in energy consumption, free of pollution, clean, environmentally friendly, high in recovery rate and the like, and secondary pollution caused by a traditional process technology is thoroughly abandoned; by adopting the method to treat the waste rolling oil, the physical and chemical properties and the using property of the waste oil can be effectively recovered, and the good social benefit and economic benefit are achieved.
Owner:SHANGHAI INST OF TECH

Replaceable arc-shaped soft steel plate combined energy dissipation damper for beam-column joints

The invention provides a replaceable arc-shaped soft steel plate combined energy dissipation damper for beam-column joints. The replaceable arc-shaped soft steel plate combined energy dissipation damper comprises an upper end plate and a lower end plate, wherein an inner arc energy dissipation mechanism and an outer arc energy dissipation mechanism are arranged between the upper end plate and thelower end plate; in the inner arc energy dissipation mechanism, an upper arc plate and a lower arc plate are fixedly connected through a plurality of groups of energy dissipation plates vertically penetrating through the upper arc plate and the lower arc plate, and the parts of each group of energy dissipation plates extending out of the outer side of the upper arc plate and the outer side of thelower arc plate are connected together through connecting pieces; and in the outer arc energy dissipation mechanism, a plurality of outer arc plates are fixed together in series by deformation bolts penetrating through arc grooves. According to the replaceable arc-shaped soft steel plate combined energy dissipation damper, the energy dissipation plates and the deformation bolts jointly bear the energy dissipation, and under the action of an earthquake, the energy dissipation plates and the deformation bolts are bent and deformed, so that the plastic deformation at the beam-column joint is reduced to ensure that a frame beam-column can still maintain good ductility after the earthquake, and the function of dissipating earthquake energy is achieved.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Asphalt pavement regeneration preventive maintenance material as well as preparation method and application thereof

The invention belongs to the technical field of road building materials and engineering, and particularly relates to an asphalt pavement regeneration preventive maintenance material as well as a preparation method and application thereof. The asphalt pavement regeneration preventive maintenance material comprises an asphalt regeneration agent, an asphalt mortar emulsion and a waterproof curing liquid. The asphalt mortar emulsion comprises 38-45 wt% of asphalt, 5-10 wt% of epoxy mortar, 25-31 wt% of an aromatic hydrocarbon solution, 0.5-1 wt% of basalt ore powder, 10-15 wt% of an activator, 2-5 wt% of an emulsifier and 1-2 wt% of a stabilizer. The waterproof curing liquid is prepared from 35-40 wt% of quartz sand, 10-17 wt% of tridecafluorooctyltriethoxysilane, 30-35 wt% of epoxy resin, 8-15 wt% of asphalt and 5-10 wt% of a curing agent. The asphalt regeneration agent, the asphalt mortar emulsion and the waterproof curing liquid are sequentially sprayed on an asphalt pavement to form three protective layers on the asphalt pavement, regeneration of aged asphalt can be promoted, aging of the recycled asphalt can be delayed, and the maintenance effect of the asphalt pavement can be comprehensively improved.
Owner:河南省公路工程试验检测中心有限公司 +1

Method for welding shaft of portable exothermic welding shaft welder

The invention relates to a method for welding a shaft of a portable exothermic welding shaft welder. The problem of fast welding and repairing of broken shafts of military equipments and civilian vehicles is solved. The shaft welder comprises a broken shaft fixer (1), a die (3) and a self-propagating tinker (2), wherein the broken shaft fixer (1) comprises a base (1.3), a supporter (1.4), a baffle plate (1.2) and a ring fixer (1.1); the self-propagating tinker (2) comprises a steel pot (2.5); a bottom refractory brick (2.4) and an upper refractory brick (2.2) are arranged on lining of the steel pot (2.5); a thermit welding flux and an igniter (2.6) are arranged inside the upper refractory brick (2.2); and the thermit welding flux and the igniter (2.6) are pressed together as a whole. The method comprises the following processing steps: treating the surface; filling a die, loading the thermit welding flux and the igniter, casting and pressurizing, stripping the die and polishing. According to the invention, shaft parts of battle-scarred tanks are fast welded and repaired by utilizing an exothermic welding technology, particularly, proper pressure is exerted in the welding process, so that metallographic structure of a welding area is obviously improved and the welding strength is improved.
Owner:江阴东大新材料研究院

The method of cleaning the sticky slag at the bottom of the ladle

The invention discloses a method for cleaning sticky slag at the bottom of a ladle. It includes converter smelting billet rebar, the end point temperature is controlled at ≥ 1630°C, and the end point carbon content is controlled at 0.06% to 0.15%; the steel ladle to be processed is transported to the converter tapping position, and fluorite and silicon carbide are added to the bottom of the ladle. Tapping; during the tapping process of the converter, carbon powder and silicon-manganese alloy are added to control the composition of molten steel: C≥0.2%; Si: 0.2%-0.6%; Mn: 1.2%-1.5%; Alt≤0.0030%; After steel, the ladle is transported to the argon blowing station for argon blowing, and the composition of molten steel top slag is controlled: CaO: 35% ~ 40%, SiO 2 :30%~35%,Al 2 o 3 ≤10%, MgO≤10%; pour out after the argon station leaves the station, the pouring process temperature is ≥1520°C, pour out the pouring slag after casting. The invention aims at the problem that after the slab aluminum-killed molten steel is cast, the bottom of the ladle is more precipitated due to the deposition of high-melting point substances, and provides a method for cleaning the sticky slag at the bottom of the ladle, and the cleaned ladle restores its serviceability, and the method The effect is remarkable, the operation is convenient, and the cost is not increased.
Owner:LIUZHOU IRON & STEEL +1

An electromagnetic crushing moisture-proof carbon powder regeneration device for electrophotographic imaging equipment

The invention discloses an electromagnetic crushing moisture-proof carbon powder regeneration device for electrophotographic imaging equipment, and the structure includes: a starting motor, a drive shaft, an actuator, a forward and backward magnetic crushing device, a moisture-proof guiding-out device, a carbon collection tank, a discharge hopper, a supporting block, a supporting rotating rod, a support body and an outer projection seat. By controlling the forward rotation of the starting motor, the rotation of the forward and backward magnetic crushing device is realized, the carbon powder isimpacted and crushed for the first time under the interaction of an inner magnetic device and an outer magnetic device, and is crushed for the second time under the action of an extrusion spring, sothat that carbon powder is fully crushed, then the starting motor is controlled to rotate reversely, the outer projection seat can be driven to rotate through the forward and backward magnetic crushing device, The carbon powder is pushed onto the moisture-proof guiding-out device, and the carbon powder and a material block are fully rubbed to fill the gap between the carbon powder, so that moisture in the air is prevented from entering the carbon powder, and the carbon powder can be dried at the same time to restore the original use effect, thereby avoiding unclear photographic imaging printing and remaining on the equipment and wasting carbon powder.
Owner:缪宝梅

Device for prolonging service life of oil-containing filter cloth of continuous casting plate frame

The invention relates to a device for prolonging the service life of oil-containing filter cloth of a continuous casting plate frame. The device comprises a continuous casting slurry regulating reservoir, a steelmaking slurry regulating reservoir, a continuous casting plate frame and a steelmaking plate frame, wherein the continuous casting slurry regulating reservoir is connected with the continuous casting plate frame through a continuous casting plate frame feeding main pipe and a continuous casting plate frame filtrate water return pipe; the steelmaking slurry regulating reservoir is connected with the steelmaking plate frame through a steelmaking plate frame feeding main pipe and a steelmaking plate frame filtrate water return main pipe; the continuous casting plate frame feeding main pipe is communicated with the steelmaking plate frame feeding main pipe through a pipeline with a feeding branch pipe valve; and the continuous casting filtrate water return pipe is communicated with the steelmaking filtrate water return pipe through the pipeline with a water return branch pipe valve. Revolving furnace dust removing sludge is treated by using the continuous casting plate frame, has the characteristics of high pH and high basicity, and can be used for cleaning oil sludge attached to the continuous casting plate frame, so that the service performance of the filtering cloth is recovered, and the service life of the filter cloth is prolonged.
Owner:LIANFENG STEEL (ZHANGJIAGANG) CO LTD

Online repairing structure of double-shaft humidifying stirrer of dust remover

The utility model discloses an online repairing structure of a double-shaft humidifying stirrer of a dust remover, belongs to the technical field of dust remover stirrer equipment, and is used for repairing the double-shaft humidifying stirrer. According to the technical scheme, an adjusting top plate is vertically welded to the upper surface of a box body bottom plate on the outer side of the rear end of a driven shaft, a lead screw hole is formed in the adjusting top plate, and an adjusting lead screw is screwed in the lead screw hole; when the easily-broken part of the driving shaft is broken, a dummy shaft for repairing is arranged, one end of the driving shaft is matched with the shaft device and the bearing, the end face of the other end is of a sleeve structure, and the maintenance end of the driving shaft is embedded in the end face sleeve of the dummy shaft and fixedly connected; after the blades are abraded, maintenance blades are additionally arranged and are arc-shaped manganese steel plates, the lower ends of the maintenance blades are welded to the upper ends of the abraded blades, and the tool bits are installed on the maintenance blades through fixing bolts. The online repairing structure is simple in structure and convenient to use, the problems of blade clamping, driving shaft breaking and blade abrasion caused by gear abrasion or gear tooth abutting and offside can be rapidly solved, the maintenance time is greatly saved, and the maintenance cost is reduced.
Owner:HEBEI IRON AND STEEL
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