30results about How to "Send powder evenly" patented technology

The invention discloses a wideband nozzle capable of uniformly feeding power in laser processing. The wideband nozzle comprises a rectangular nozzle and an annular powder cavity, the rectangular nozzle is provided with a rectangular powder feed channel and a protection gas channel, one end of the rectangular powder feed channel is a powder outlet, the protection gas channel is arranged at the periphery of the powder outlet and parallel to the powder outlet, the other end of the rectangular powder feed channel is a powder feed gas channel, the powder feed gas channel comprises a transition channel and a circular channel, the transition channel is used for realizing the smooth and uniform transition from the circular channel to the rectangular powder feed channel, the rectangular nozzle is installed and fixed in the annular powder cavity, the powder outlet end and the circular channel end of the rectangular nozzle extend out of the annular powder cavity, the powder is put in the annular powder cavity, and the gas channel is arranged in the annular powder cavity, and a powder inlet is arranged at the side of the rectangular powder feed channel of the rectangular nozzle. The nozzle disclosed by the invention can be used for greatly eliminating the phenomenon that the powder in middle is more than powder at two sides when the rectangular nozzle is used for feeding powder, the powder is capable of uniformly filling the powder outlet of the whole rectangle to realize the uniform powder feed.

The invention provides a laser cladding device capable of recycling and reusing reflected light. The laser cladding device capable of recycling and reusing reflected light comprises a reflecting cover, a laser head inner wall and a laser head outer wall, wherein the inner wall of the laser head is arranged inside the outer wall of the laser head, a laser beam channel used for transmitting a laserbeam is formed inside the inner wall of the laser head, a powder beam used for transmitting a powder beam is formed between the out wall of the laser head and the inner wall of the laser head, the laser beam passes through the laser beam channel and then is focused on the surface of a to-be-machined workpiece, the powder beam is focused on the surface of the to-be-machined workpiece after passingthrough the powder beam channel, the laser beam and the powder beam are focused on the same point on the surface of the to-be-machined workpiece, and a reflecting cover can reflect the laser reflectedby the surface of the to-be-machined workpiece back to the joint focus point where the laser beam and the powder beam located on the surface of to-be-machined the workpiece. According to the laser cladding device, a reflected light recycling and reusing mechanism and related cooling mechanism are arranged, so that the damage of the reflected laser to equipment and a human body is reduced, the laser utilization efficiency is improved, and the development bottleneck of an existing laser cladding technology is solved.

The coaxial power-feeding nozzle, belonging to the field of laser processing equipment technology, is formed from laser channel, U-shaped fastener, outer ring, cone ring, cone cover, internal coolingwater channel, external cuoling water channel and powder feeding channel, in which the laser channel is formed from light guide tube, cooling cover, reflector and internal cone body, and its internalcooling water channel is formed from water intake pipe, water intake channel, water discharge pipe, water discharge channel, internal ring water channel and its partion, board, its powder-feeding channel is composed of power-feeding pipe, ring mixing cavity and conical ring groove, it has 2-8 powder-feeding pipes which are distributed along the radial direction, and its external cooling water channel is formed from water-intake pipe, water outlet pipe, external ring water channel and its partion board.

The invention relates to cobalt-based alloy powder for plasma spray. The cobalt-based composite powder is prepared from the following raw materials in parts by weight: 90-120 parts of cobalt-based alloy powder, 3-5 parts of yttria powder, 7-12 parts of titanium boride powder and 10-15 parts of chromium carbide powder; the powder is mechanically and uniformly mixed after being treated by radio frequency induced plasma balling equipment to obtain subsphaeroidal cobalt-based composite powder; and the invention further discloses a method for manufacturing a hydraulic prop piston rod fusion covering coating by plasma spray. High bonding strength and hardness, good abrasive resistance and corrosion resistance and reduced cracking sensibility of the fusion covering coating are obtained through the treatment of the radio frequency induced plasma balling equipment and the optimization of plasma spray technological parameters; and the service life of a hydraulic prop piston rod is prolonged. Meanwhile, the cobalt-based composite powder can further be applied to the protection of other parts.

The invention discloses a material hanging type automatic wax injecting and quantitative powder spraying mechanism. The material hanging type automatic wax injecting and quantitative powder spraying mechanism comprises a feeding device, a quantitative powder feeding device and a wax injecting and powder spraying nozzle; the wax injecting and powder spraying nozzle is used for spraying powder and injecting wax liquid into a mold; powder materials enter the quantitative feeding device through the feeding device; the quantitative feeding device communicates with the wax injecting and powder spraying nozzle; the quantitative powder feeding device comprises a belt wheel support, a driving motor, a driving belt heel, a driven belt wheel, a transmission belt and a material scraping part; the driving belt wheel and the driven belt wheel are both connected to the belt wheel support in a shaft connection manner; the driving motor is connected with the driving belt wheel; and the transmission belt is provided with powder feeding grooves at intervals, and the material scraping part is arranged on the belt wheel support. According to the material hanging type automatic wax injecting and quantitative powder spraying mechanism, due to cooperation of the feeding device and the quantitative powder feeding device, it is achieved that powder is quantitatively fed to the wax injecting and powder spraying nozzle, and therefore a quantitative powder spraying procedure is completed, manual operation is not needed, the work efficiency is greatly improved, powder spraying in the mold is uniform, itis avoided that due to the fact that manual powder spraying is not uniform, forming of a wax mold is affected, and the qualification rate of wax mold forming is increased.

The invention discloses an annular laser cladding nozzle comprising an inner core and an outer sleeve arranged outside the inner core in a sleeving mode, a laser channel is formed in the center of the inner core, and an opening allowing laser to be emitted out is formed in the center of the inner core; a material mixing chamber is arranged between the inner core and the outer sleeve, and a second conveying channel for outputting metal powder is arranged between the material mixing chamber and the opening; the material mixing chamber is communicated with more than one first conveying channel for inputting the metal powder; and the inner core is also provided with grooves facing the material mixing chamber. Preferably, the number of the first conveying channels is two. The multiple grooves are formed in the surface of the inner core at equal intervals, when powder and gas are mixed and enter the material mixing chamber, due to the existence of the grooves, the powder continuously impacts the grooves and forms cyclone, the powder continuously impacts back and forth in the material mixing chamber, and therefore uniform powder feeding is achieved. In order to improve the powder mixing and feeding effect, the preferable scheme of the material mixing chamber and the second conveying channel is that the material mixing chamber and the second conveying channel are of a rotary structure with the central axis of the laser channel as the center. The grooves are arranged in the inner core in an annular array.

The invention discloses a powder feeding and spreading mechanism. The powder feeding and spreading mechanism comprises powder feeding barrels, a levelness detector, a cylinder, a working platform, power units, guide rails, a rack, a powder feeding and spreading sleeve and a spiral powder feeding mechanism. The powder feeding and spreading sleeve is a cylindrical ring. The length of the powder feeding and spreading sleeve is equal to that of the working platform. Any one-quarter circumference of the powder feeding and spreading sleeve is provided with a powder discharge screen, and the other three-quarter circumference of the powder feeding and spreading sleeve serves as a flattening device. The powder discharge screen is provided with micro powder discharge holes. The spiral powder feedingmechanism is arranged in the powder feeding and spreading sleeve. The powder feeding and spreading mechanism provided by the invention integrates flattening and powder spreading, implements powder spreading and flattening simultaneously to improve the efficiency, feeds powder from one end of the powder feeding and spreading sleeve to the other end of the powder feeding and spreading sleeve through the spiral powder feeding mechanism, realizes uniform powder feeding and improves the powder spreading quality.

The invention discloses a control method for laser cladding powder feeding. The control method for laser cladding powder feeding comprises the steps that S10, a driving part drives a conveying part tofeed powder at a certain driving speed, so that metal powder is conveyed to a second powder feeding barrel from a first powder feeding barrel; S20, a sensor detects a quantity value H of the metal powder in the second powder feeding barrel; S30, a controller obtains the quantity value H and generates a corresponding powder conveying control instruction by judging the relation between the quantityvalue H and a preset threshold value H0; and S40, the driving part receives the powder conveying control instruction, so that the driving part adjusts the driving speed. The technical problem of uneven powder feeding can be effectively solved, and the technical effects of stable powder conveying and even powder feeding are achieved.

The invention relates to an electronic powder injection powder conveyor which comprises a powder tank and is characterized in that the bottom of the powder tank is an isolation ring, the isolation ring is provided with a powder feeding hole, the bottom of the isolation ring is contacted with a powder storage sheet, the powder storage sheet is connected with a spindle, a plurality of quantitative small holes are uniformly arranged in the powder storage sheet, a blanking disc is arranged below the powder storage sheet and is provided with a blanking hole, and the powder feeding hole of the isolation ring and the blanking hole of the blanking disc are arranged in a staggering way. The invention has the advantages of simple structure and accurate fixed quantity control of blanking, thereby uniformly injecting powder.

The invention discloses a one-way valve type powder spraying and wax injecting integrated type structure. The one-way valve type powder spraying and wax injecting integrated type structure comprises ascrew powder feeding device and a spray nozzle composite device; the screw powder feeding device is used for quantitatively conveying powder for the spray nozzle composite device which comprises a feeding spray nozzle head and a heat generating barrel; the feeding spray nozzle head is provided with a first through hole, and the heat generating barrel is arranged on the feeding spray nozzle head which is provided with a feeding port and a second through hole; the feeding spray nozzle head is provided with five powder outflow holes which correspondingly communicate with the feeding port; the second through hole further communicates with the powder outflow holes; the feeding port communicates with the screw powder feeding device; the first through hole is connected with a wax liquid pipe one-way valve; and the second through hole is connected with a vacuum pipe one-way valve. According to the one-way valve type powder spraying and wax injecting integrated type structure, due to the factthat the powder feeding work procedure and the wax injecting work procedure are integrated, manual powder spraying operation is not needed, and the work efficiency is improved; the powder spirally moves, quantitative conveying of the powder is completed in combination with the opening and closed states of an electromagnetic vacuum check valve, the efficiency is high, powder spraying in a mold is uniform, and the qualification rate of wax mold forming is increased.

The invention discloses laser sintering equipment, and belongs to the field of additive manufacturing. The laser sintering equipment comprises a rack, a cylinder body and a lead screw nut pair. The laser sintering equipment is characterized in that the cylinder body comprises an upper cylinder body and a lower cylinder body, and the upper cylinder body and the lower cylinder body are connected through a telescopic structure; the lead screw nut pair is located at the center position of the bottom end of the exterior of the lower cylinder body and consistent with the Z-axis direction of the cylinder body; directional guide rails used for supporting the cylinder body and cooperating with the lead screw nut pair to enable the lower cylinder body to rise and fall are arranged outside the lowercylinder body; and a powder supplying and spreading mechanism comprises a powder supplying and spreading sleeve and a spiral powder feeding mechanism. Compared with the prior art, by the adoption of the scheme, the problems about sealing and washing can be completely solved, strickling and powder spreading are combined together, powder spreading and strickling are carried out simultaneously, and therefore the efficiency is improved; and powder is fed from one end of the powder supplying and spreading sleeve to the other end of the powder supplying and spreading sleeve through the spiral powderfeeding mechanism, uniform powder feeding is achieved, and the powder spreading quality is improved.