53results about How to "Reduce process resistance" patented technology

The invention discloses a multi-wire saw for cutting high-hardness materials. The multi-wire saw comprises a workbench capable of oscillating under driving of an oscillating component. A stock plate is placed on the workbench. A multi-wire cutting mechanism is arranged above the workbench and comprises three sheaves in triangular arrangement and wound with cutting wires. The oscillating component comprises a lifter and further comprises a rocker arm; the lifter is provided with provided with a pair of bearing blocks and two ends of a center shaft are mounted in the bearing blocks rotationally; the part, between the two bearing blocks, of the center shaft, is fixedly sleeved with a bearing bush, and the top end of the bearing bush is fixed with the bottom of the workbench; an oscillating rod is fixedly mounted at the bottom of the bearing bush and particularly mounted on an oscillating shaft, two ends of the oscillating shaft are rotationally mounted on a rocker arm support, and the rocker arm support is fixedly mounted on the lifter; one end of the rocker arm is connected to the oscillating shaft while the other end of the rocker arm is mounted on an eccentric shaft, and the eccentric shaft is driven by a motor which is fixedly mounted on the lifter.

A vitrified superabrasive grain grinding stone includes superabrasive grains including a CBN abrasive grain as a main abrasive grain and a diamond abrasive grain as an auxiliary abrasive grain bonded together by use of a vitrified bond. The auxiliary abrasive grain has an average grain diameter equal to ½ to 1/10 of that of the main abrasive grain, and the auxiliary abrasive grain has a toughness value of 0.4 to 1 when that of the main abrasive grain is given as 1.

The invention relates to a high-speed ultrasonic automatic tool changing motorized spindle. The high-speed ultrasonic automatic tool changing motorized spindle is provided with an ultrasonic spindle body. The ultrasonic spindle body comprises a machine shell, a rotor shaft coaxially arranged with the machine shell, and a machining tool fixed to one end of the rotor shaft and connected with the end of the rotor shaft through nuts and an elastic contracting chuck. An ultrasonic tool handle is arranged at the front end of the rotor shaft. The rear end of the rotor shaft extends into the rear end of the machine shell. A built-in type assembly chamber is arranged in the ultrasonic tool handle. A built-in energy converter is detachably mounted in the built-in type assembly chamber. An ultrasonic generator is mounted on the upper portion of the ultrasonic tool handle and comprises an L-shaped combined support, a planar adjusting support and a vertical adjusting support, and the planar adjusting support and the vertical adjusting support are mounted on the combined support. The planar adjusting support passes through a fixed ring and then is coupled with a movable ring on the ultrasonic tool handle. A gap is formed between the fixed ring and the movable ring. A driving motor is directly connected with the ultrasonic spindle body and the ultrasonic tool handle, and the spindle has the characteristics that the ultrasonic spindle body and the ultrasonic tool handle are mutually independent, and application is convenient.

The invention discloses a generator set three-stage parallel serial connection bypass system and an adjusting method thereof. The system comprises a high-pressure bypass system, a low-pressure bypasssystem and a low-low-pressure bypass system; the high-pressure bypass system comprises a high-pressure bypass filter, a high-pressure bypass valve and a high-pressure bypass isolation valve, the low-pressure bypass system comprises a low-pressure bypass filter, a low-pressure bypass valve and a low-pressure bypass isolation valve which are sequentially connected between a reheating steam heat segment pipeline and a condener, the low-low-pressure bypass system comprises a low-pressure cylinder isolation valve and a medium-pressure exhaust low-pressure bypass communication valve, the low-pressure cylinder isolation valve is arranged on an air guide pipe between a medium pressure cylinder and a low-pressure cylinder, an inlet pipeline of the medium-pressure exhaust low-pressure bypass communication valve is arranged on a medium-pressure cylinder exhaust pipeline, an outlet pipeline is arranged on a pipeline between the low-pressure bypass valve and the low-pressure bypass isolation valve,the high-pressure bypass system and the low-pressure bypass system are connected through a high and low pressure bypass communication valve, and a pipeline between the low-pressure bypass valve and the isolation valve is connected with a heat net heater through a low-pressure bypass heat supply adjusting valve.

The invention discloses a processing method of an amorphous alloy member, and belongs to the technical field of amorphous alloy processing. The processing method comprises the following steps that theglass-transition temperature and the crystallization initial temperature of amorphous alloy under continuous heating conditions are measured; the crystallization starting time of the amorphous alloyunder the isothermal condition is measured; and the amorphous alloy is subjected to friction heat generation processing - rapid cooling, and amorphous alloy products are obtained. According to the processing method of the amorphous alloy member, the characteristic that the viscous resistance of the amorphous alloy is reduced in an overcooling liquid phase region is utilized to process the amorphous alloy, the problems that the amorphous alloy is difficult to machine at room temperature, long in processing period, high in cost and the like are solved, and feasibility is provided for the processing and application of the amorphous alloy.

The invention belongs to the technical field of machining, and provides a tapping clamp used for nut machining. The tapping clamp used for nut machining comprises a supporting platform, a clamp structure and a mechanical arm, wherein the clamp structure is located above the supporting platform, a sliding structure is arranged between the clamp structure and the supporting platform, the clamp structure is guided by the sliding structure to do straight reciprocating motion, and the sliding structure is fixedly connected with the supporting platform. By means of the tapping clamp, nuts to be machined can be automatically replaced in the tapping work, the machining time is shortened, the amount of labor is reduced, the working efficiency is improved, and the quality of the nuts to be machined is improved.

The invention relates to a flue gas waste heat recovery element and device capable of breaking through the low temperature dew point. The flue gas waste heat recovery element and device is characterized in that a heat exchange element is formed by an aluminum flat-oval-tube-shaped fin and aluminum fluid tubes; corrosion resistant, abrasion resistant and high temperature resistant ceramic glaze materials are composited on the surface of the heat exchange element; and an unsaturated contraction high polymer heat-shrink tube is wrapped on the outer surfaces of the ceramic glaze materials. The heat exchange element is fixed through an enameled steel plate to form a single module, a plurality of the single modules are combined in parallel connection mode to form a heat exchanger assembly, and all the fluid tubes of the heat exchange element are welded in series connection mode through bends. Liquid cold fluid is filled into the fluid tubes of the heat exchange element, three air cold fluid channels are arranged between the flat-oval-tube-shaped fin and the aluminum fluid tubes, and air hot fluid flows through the outer side of the flat-oval-tube-shaped fin. The flue gas waste heat recovery element and device has the advantages that a heat exchange tube is formed in once extruding mode, the fin is sufficiently contacted with the fluid tubes, accordingly heat exchange efficiency is improved and a large amount of labor work is reduced; the inner walls of the fluid tubes are designed to be tooth-shaped, the internal surface heat exchange areas of the fluid tubes are increased, and the heat exchange efficiency is led to be high; the heat exchange channels are additionally arranged so that use functions of a heat exchanger are increased; the surface is subjected to enameling processing and high polymer heat-shrink tube processing so that corrosion resistance, abrasion resistance and high temperature resistance are greatly improved; and the self-cleaning purpose is achieved, and normal and efficient heat exchange is ensured.

The invention relates to the technical field of residual heat removal of reactor accidents, and particularly discloses a cuboid sodium-sodium-air integrated heat exchanger. Tube plates are respectively arranged at the upper end and the lower end of a cylinder body of the heat exchanger; the upper tube plate and the lower tube plate are both vertically provided with a plurality of sodium-air heat transfer tubes; a plurality of sodium-sodium heat transfer tubes with a same inclination angle are arranged between the left side wall and the right side wall of the cylinder body; and a layer of surrounding plate is welded to the outer side wall of the cylinder body, wherein a closed space formed by covering a pipe opening at a higher position of each sodium-sodium heat transfer pipe by the surrounding plate is a primary sodium inlet chamber, and a closed space formed by covering a pipe opening at a lower position of each sodium-sodium heat transfer tube by the surrounding plate is a primary sodium outlet chamber. The heat exchanger is reduced to a sodium-sodium-air heat exchanger, and meanwhile, through a reactor vessel away from high neutron radiation, requirements for radiation resistance, manufacturing and installation requirements are obviously reduced, and heat transfer efficiency is improved.

The invention discloses sewage recycling and regenerating combined equipment which comprises a biochemical reactor, a cylindrical base, a platy base, a crypt machine room, an outer crypt machine room, an annular tank wall, a biological sand filter box, a semicircular partition, a biological activated carbon expanded bed, a water collection tank, SBRs, BAFs and a sludge concentration tank. Biochemical reaction, biological sand filtration and biological activated carbon biochemical degrading processes can be integrated in a combined pressure bearing tower, the combined pressure bearing tower can be assembled with the water collection tank, a jet-driven sequence batch biochemical reactor, a jet oxygenation biological contact filter and the sludge concentration tank to form the combined equipment, and the crypt machine room is arranged below the biochemical reactor, a biological sand filtration box and the biological activated carbon expanded bed. Flow pipelines and pipe fittings are reduced substantially, flow resistance is lowered, biochemical reaction efficiency is improved, land occupation area is compressed, construction cost is lowered, recycling and harmless sewage treatment is realized, recycling of water resources is promoted, and the water resources are saved.

The invention relates to a preparation method of a milling cutter with open slots, a manufacturing process comprises: the excircle of a metal disc is cut into a plurality of sawtooth grooves in the same direction in a uniformly distributed manner so as to form a cutter body, the method is characterized in that: (1) after a plurality of open slots are made at the bottom of the sawtooth grooves in a uniformly distributed manner along the center line direction of one surface of the cutter body, oil quenching and tempering treatments are carried out on the cutter body; (2) an alloy cutter head is welded on each sawtooth groove of the cutter body along the same direction, so as to form a milling cutter; (3) a vacuum furnace heat treatment is carried out on the milling cutter manufactured in step (2). According to the preparation method, the open slots are made in one surface of the cutter body, the internal stress of the cutter body is released during cutting, the vibration of the cutter body is eliminated, the problem that the milling cutter vibrates during working is solved, the processing resistance is reduced, the abrasion of a cutting edge is lowered, the phenomena of resonance, cutter blocking and cutter hitting generated when the milling cutter works are prevented, not only are the processing precision and the cutting speed enhanced, but also the waste of raw materials caused by the rejection rate of products is reduced by a large margin.