1544 results about "Molten slag" patented technology

The invention relates to the technical field of laser cutting equipment, in particular to laser cutting equipment for metal honeycomb aluminum plate machining. A cutting bed; the cutting mechanism is assembled on the cutting bed, and the cutting mechanism comprises a laser cutting head which moves in the horizontal transverse direction, the horizontal longitudinal direction and the vertical direction to execute cutting; the linkage rack is fixed on the horizontal longitudinal moving part of the cutting mechanism and extends to the lower part of the cutting bed; and the adsorption fixing frame is fixedly assembled on the cutting bed and is used for adsorbing and fixing the honeycomb aluminum plate so as to prevent the honeycomb aluminum plate from moving. According to the cutting equipment provided by the invention, the problems of non-uniform temperature distribution, existence of temperature gradient, unreasonable cooling position control and the like on the upper plate surface and the lower plate surface when the metal honeycomb aluminum plate is cut are further solved; the cutting quality problems such as plate deformation and layering and slag residues and burrs at the position close to the lower part of the cutting edge of the plate still occur, so that the laser cutting quality of the metal honeycomb aluminum plate is ensured.

The invention discloses a laser cutting device, and relates to the technical field of laser cutting, the laser cutting device comprises a mounting rack, a laser cutting assembly used for movable cutting is mounted on the top side of the mounting rack, a sword grid frame used for placing a cutting piece is arranged on the bottom side of the laser cutting assembly, and a waste collecting groove used for collecting cutting waste is formed in the bottom side of the sword grid frame; according to the laser cutting device, through the arrangement of the male plate, the female plate, the steel balls, the inserting block, the scraper, the sliding sleeve and the like, after laser cutting is completed, in the process that the inserting block drives the male plate and the female plate to rotate reversely, a cutting piece is placed on the steel balls after being supported by the L-shaped supporting frame, and the cutting piece is placed on the sliding sleeve; the cutting piece is convenient to move and take, the surface of the cutting piece is prevented from being scratched, molten slag attached to the side faces and the sword peaks of the male plate and the female plate in the rotating process of the male plate and the female plate is automatically cleaned, and the use convenience of the device is further improved.

The invention relates to the technical field of laser rotary cutting, and discloses a laser rotary cutting mechanism for metal part machining. Comprising a laser cutting head connected to the laser rotary cutter, a clamping and rotating mechanism connected to the laser rotary cutter, a movable push block connected to a rack of the laser rotary cutter, a suction pipe installed on the movable push block and a slag suction copper pipe connected to the suction pipe. The arc-shaped scraping plate is arranged in the slag extraction copper pipe and connected with the rotating shaft through the connecting rib, the arc-shaped scraping plate can move along with the extraction pipe, the arc-shaped scraping plate annularly rotates in the slag extraction copper pipe, the arc-shaped scraping plate can effectively scrape metal slag attached to the inner wall, corresponding to the opening, of the slag extraction copper pipe, and the metal slag can be effectively removed through the negative pressure fan of the arc-shaped scraping plate. The scraped metal slag can be smoothly pumped away and cannot be accumulated in the slag pumping copper pipe; and the arc-shaped scraping plate is matched for multiple scraping operations, so that the accumulation thickness of the metal slag on the inner wall of the slag pumping copper pipe is avoided, and the problem of pipeline blockage or unsmooth pumping caused by slag accumulation is reduced.

The invention relates to the technical field of plasma cutting equipment, and discloses metal plate cutting equipment which comprises a bottom frame, a cutting mechanism, a cleaning mechanism and a collecting mechanism, the cleaning mechanism comprises a mounting plate, a polishing plate, an extrusion spring, an abutting plate and a water cooling assembly, and the mounting plate is slidably connected to the bottom frame through the collecting mechanism; a mounting groove is formed in the mounting plate, the extrusion springs are fixedly connected to the bottom and the top in the mounting groove, the abutting plate is fixedly connected to the extrusion springs, the grinding plate is detachably mounted on the abutting plate, the collecting mechanism is used for collecting slag falling during grinding, and the cutting mechanism is used for cutting a metal plate. The cleaning mechanism is arranged to be matched with the collecting mechanism, after the metal plate is cut, slag and burrs on the upper surface and the lower surface of the metal plate are polished, the burrs and the slag on the surface of the metal plate are removed and collected, and therefore the situation that the burrs and the slag remain on the surface of the metal plate, and the subsequent plate machining quality is affected is prevented.

The invention discloses a coal gasification slag-based backfill material for replacing flow-state solidified soil, a preparation method and an application, utilizes a synergistic gelling effect among three raw materials, breaks through a material strength forming mechanism of traditional flow-state solidified soil, solves the problems of multiple components and high cost of a flow-state solidified soil material in the prior art, and has the advantages of low raw material cost, low raw material cost, low raw material cost, low raw material cost and the like. And the product popularization is facilitated. The specific scheme is as follows: the coal gasification slag-based backfill material for replacing the fluidized stabilized soil comprises coal gasification slag, carbide slag and titanium gypsum, the ratio of the coal gasification slag to the carbide slag to the titanium gypsum is 6-8: 1.5-3.5: 0.5-1.5, and an alkaline activator is also added; the coal gasification slag is a slag block with a set particle size formed after slag at the bottom of a gasification furnace is cooled, the carbide slag is waste slag which takes calcium oxide as a main component after acetylene gas is obtained by hydrolyzing calcium carbide, and under the action of an exciting agent, the coal gasification slag and the carbide slag are fully activated to release polyhedrons; part of the polyhedrons form a gelling product so as to improve the early strength of the coal gasification slag-based backfill material.

The invention discloses a high-strength high-temperature alloy and a preparation method thereof. The high-strength high-temperature alloy comprises a high-temperature alloy matrix and rare earth oxides dispersed and distributed in the high-temperature alloy matrix. The high-temperature alloy matrix is GH4169, and the high-temperature alloy matrix is made of The rare earth oxide is one or two of La2O3 and Ce2O3, the particle size of the rare earth oxide is 50-500nm, and the total adding amount of the rare earth oxide is 0.02-0.03% of the mass of the alloy; the preparation method of the high-strength high-temperature alloy comprises the following steps: (1) preparing rare earth oxide particles; (2) charging and smelting rare earth oxide particles and alloy raw materials in a vacuum induction furnace, and casting into ingots after the components are qualified; (3) electroslag remelting: adding analytically pure rare earth oxide into a slag system; and (4) the electroslag ingot is subjected to homogenization, forging and solid solution aging treatment, and then the alloy is obtained. According to the method, the strength and plasticity of the high-temperature alloy are improved.

The invention discloses an all-component comprehensive utilization method for leaching residues of a laterite-nickel ore high-pressure acid leaching process, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: granulating and sintering the iron-containing slag of the laterite-nickel ore high-pressure acid leaching process and raw materials containing coke powder, a flux and return mine to obtain sintered ore and sulfur dioxide flue gas; sulfur dioxide is used for preparing sulfuric acid and returned to the laterite-nickel ore high-pressure acid leaching procedure; smelting the sintered ore, coke and a slag modifier through a blast furnace to obtain molten iron and slag; the molten slag is subjected to cold quenching, and granulated molten slag is obtained; and after being ground, part of the granulated slag is mixed with the granulated slag and auxiliary materials containing an alkali activator and tailings in the laterite-nickel ore high-pressure acid leaching process to serve as a backfill material. By means of the method, low-consumption, efficient and large-scale all-component comprehensive utilization of the leaching residues of the laterite-nickel ore high-pressure acid leaching process can be achieved, 100% resource utilization of the residues is completed, and the method has considerable industrial popularization potential.

The invention belongs to the technical field of steel smelting, and particularly discloses a comprehensive utilization method of vanadium titano-magnetite, which comprises the following steps: S1, preparing the vanadium titano-magnetite into pellets, and carrying out reduction reaction to obtain direct reduced iron; s2, a carbonaceous reducing agent and the direct reduced iron obtained in the step S1 are mixed and smelted in a melt separation electric furnace, and slag and molten iron are obtained; a slag former is not added in the smelting process, the purity of the titanium slag is improved through optimal design of the furnace profile of the melting electric furnace and combination of various smelting process control means, the problems that refractory materials of the melting electric furnace are excessively eroded, the service life is short, slag-metal separation is difficult, smelting is difficult to control and the like are solved, and the purposes of high-grade titanium slag and long service life of the melting electric furnace are achieved.

The invention provides a self-heating tempering and valuable metal partition recycling method for copper smelting slag. The method comprises the steps that S1, a slag tempering agent is prepared from industrial sulfate waste and a low-cost carbonaceous reducing agent; s2, in the copper smelting matte smelting deslagging process, a tempering agent is added into molten slag, and phase adjustment reaction is completed through latent heat of the molten slag; s3, after the slag is slowly cooled, classifying the upper part and the lower part of materials in the slag ladle, and performing conventional crushing, ore grinding and flotation on the upper part to recover valuable metals; and S4, the lower part of sulfonium-rich slag enters a direct return smelting system or is crushed and levigated, and then copper concentrate is recycled through magnetic separation-reverse flotation. According to the copper smelting slag self-heating tempering and valuable metal partition recycling method, synergistic low-carbon treatment is conducted on copper smelting slag and sulfate waste residues according to the concept of treating waste with waste, the method has the advantages of being high in metal recycling rate, low in cost, environmentally friendly, simple in process and material and the like, good economic benefits and environmental benefits are achieved, and the industrial popularization difficulty is small.

The invention relates to the technical field of metal plate processing and cutting, and discloses a metal plate processing and cutting device which comprises a mounting frame, a feeding and discharging assembly is arranged on the rear side of the mounting frame, a to-be-cut placing block is fixedly connected to the rear left side of the mounting frame, and a cut placing block is fixedly connected to the left side of the to-be-cut placing block. The device comprises a mounting frame, a placing frame assembly is arranged in the mounting frame, a cutting assembly is arranged at the top end of the mounting frame, a screening assembly is arranged on the inner bottom wall of the mounting frame, a protection frame is fixedly connected to the top end of the mounting frame, and a smoke discharging and dust removing assembly is arranged at the top of the protection frame. A metal plate can be accurately cut according to a preset path through the laser cutter under the control of the numerical control module, deviation and temperature change of a laser beam are monitored in real time through the sensor, and large metal waste and small slag can be automatically separated through reciprocating knocking driven by the cam and continuous vibration of the screen.

The invention discloses a hooklift arm beam tailor-welding tool and tailor-welding method, and relates to the technical field of welding assistion.The hooklift arm beam tailor-welding tool comprises a tailor-welding workbench, a vertical arm body, a horizontal arm body and a welding clamp component, and the top of the tailor-welding workbench is fixedly connected with a supporting plate. During use, a driving motor drives a clamping side plate to fix a vertical arm body and a horizontal arm body, meanwhile, a sliding rod and a clamping top plate are matched to achieve all-directional clamping, resist residual stress in welding cooling, keep the shape and size of a pull arm and improve the percent of pass, when clamping is nearly completed, gears are meshed through a translation plate and a connecting rod, and the clamping effect is improved. The eccentric ring groove is matched with the supporting cylinder to collide and vibrate the welding position, residual stress is redistributed and released, the production cycle is shortened, the strength and stability of the pull arm are improved, in addition, through the matching of the third connecting rod and the sliding block, slag, oxide skin and the like on the surface of a weld joint are cleaned before vibration, stress concentration and crack propagation are avoided, and the welding quality is guaranteed.

The invention relates to the technical field of laser cutting equipment, and discloses galvanized coiled plate cutting equipment which comprises a mounting frame, a guide rail structure, a cutting structure, a conveying structure, an intercepting toothed plate, a slag removal fan and a discharging structure. The cutting structure comprises a cutting seat, a laser cutting head, a separated protective cover, the intercepting toothed plate, the slag removal fan and the discharging structure; the separated protective cover is formed by splicing a plurality of splicing covers. Each splicing cover comprises an outer cover plate, an inner air box, a limiting plate, a limiting spring and an air supply hose. When the device is used, high-pressure air is blown out of the inner air box to form a protective air curtain on the splicing cover, the annular air cover and the laser cutting head, and therefore the situation that slag splashes and is intercepted, and zinc steam adheres to the splicing cover, the annular air cover and the laser cutting head can be prevented; and air is forced to be discharged along the cutting seam by the closed space formed by the separation type protective cover, so that the blowing force of the airflow to the lower edge of the notch is enhanced, and the adhering slag can be forcibly stripped.

The invention discloses a system for preparing a green cementing material by thermal coupling of metallurgical slag. Comprising a reaction furnace for receiving the hot blast furnace slag and the hot steel slag, and a stirring device for stirring the hot slag in the reaction furnace, the cooling and granulating system is used for receiving the hot-state slag from the reaction furnace and carrying out cooling and granulating treatment on the hot-state slag; and the grinding system is used for receiving slag particles from the cooling and granulating system and carrying out grinding on the slag particles. According to the system for preparing the green cementing material through metallurgical slag thermal-state coupling, after steel slag is subjected to thermal-state coupling modification, the cementing activity of steel slag micro powder is remarkably improved, especially the early activity is greatly improved, and the S95-level performance requirement of the slag micro powder is met; the content of f-CaO in the steel slag is greatly reduced, and the problem of volume stability of a steel slag product is solved. The invention further discloses a method for preparing the green cementing material through metallurgical slag thermal-state coupling.

The invention discloses laser cutting equipment and a cutting method for metal materials, and relates to the technical field of laser cutting equipment.The laser cutting equipment comprises a machine table, a laser cutter is arranged at the top of the machine table, the laser cutter comprises a shell, and a laser cutting head is installed in the shell; a rotating disc rotating around the laser cutting head is arranged on the edge of the laser cutting head, and an air supply spray head is fixedly installed on one side of the bottom of the rotating disc. According to the laser cutting equipment, the air supply spray head capable of rotating around the laser cutting head is arranged, materials are cleaned before cutting, and the air supply spray head is located behind the laser cutting head during cutting, so that residual slag in a notch is cleaned, the temperature difference between the notch and other parts of the materials is reduced, and then thermal stress is reduced; according to the cutting method matched with the cutting device, the material is preheated through low-power laser before cutting, and the thermal stress in the cutting process is further reduced.

The invention discloses a laser machine for machining a steel fireproof door, and relates to the technical field of laser cutting machining of steel fireproof doors. The laser machine for machining the steel fireproof door comprises a bearing lathe bed, a laser cutting system arranged on the upper portion of the bearing lathe bed, two C-shaped rail seats fixedly connected to the front and back opposite sides of the bearing lathe bed correspondingly, and a groove-shaped workbench connected between the two C-shaped rail seats in a sliding mode. A self-pushing and auxiliary scraping integrated mechanism used for automatically pushing out a machined steel fireproof door blank plate and cleaning slag on a saw-shaped metal supporting strip is arranged on the left portion of the upper end face of the bearing lathe bed. The groove-shaped workbench drives the door blank plate to move back to trigger a self-scraping assembly to automatically clean slag dripping on the saw-shaped metal supporting strip. Slag accumulation and solidification are avoided, the problem of tilting or inclining is solved, it is ensured that a door blank plate is flatly placed on the workbench, a laser cutting head is perpendicular to the surface of a workpiece, it is ensured that a laser beam cuts at an accurate angle, and the accuracy of cutting machining is improved.

An oxyide dispersion-strengthened (ODS) alloy is disclosed that is compatible with melt-based additive manufacturing processes, such as laser powder bed fusion (L-PBF) while achieving material properties, such as resistance to frictional ignition, comparable to or better than wrought ODS alloys. This is accomplished, in part, by adjusting the composition of the ODS alloy and / or adjusting the operating parameters of the additive manufacturing process to reduce or, in some instances, mitigate dispersoid coarsening and slag formation. For example, a nickel (Ni)-based ODS alloy may include less than 0.3 wt % aluminum (Al) to reduce the formation of low melting point oxides that are prone to coarsening and slag formation. In another example, various processing parameters associated with a selective laser melting process, such as beam power, beam spot size, and scan speed, may be chosen to reduce a melt time associated with the additive manufacturing process.

The invention discloses a laser cutting device for steel plate machining, and particularly relates to the technical field of laser cutting, the laser cutting device for steel plate machining comprises a supporting leg and a storage box arranged on the side edge of the supporting leg and used for bearing a cut steel plate, and the upper portion of the supporting leg is provided with a plurality of first racks which are parallel to one another and used for supporting the steel plate to be cut; a cutting platform is further arranged on the upper portions of the supporting legs, a protective frame used for bearing slag generated in the welding process is further arranged below the supporting legs, and a jacking mechanism is arranged on the rear portion between the protective frame and the first rack. According to the laser cutting device for steel plate machining, a cut steel plate is turned over and slides into the storage box to be collected in the process of removing slag on the surface of the first rack through the arranged slag removing mechanism, and the phenomenon that scratches are formed on the surface of the steel plate by tooth tip edges of the first rack due to traditional manual dragging discharging is avoided; meanwhile, heavy physical labor is replaced, and the manual labor intensity is reduced.

The invention relates to the technical field of arc cutting, in particular to arc cutting equipment for metal distribution box machining, which comprises a horizontally arranged fixed mounting disc, a plurality of fixed mounting plates are arranged on the edge of the fixed mounting disc at equal angles, fixed mounting holes are formed in the fixed mounting plates, and a plurality of buffer rubber rings are arranged on the upper side of the fixed mounting disc. A supporting mounting column is arranged on the lower side of the fixed mounting disc. The cutting device further comprises a rotating displacement mechanism, a follow-up adjusting displacement mechanism, an adjusting cutting module and an accompanying processing module. According to the equipment, precise space positioning of the cutting head is achieved through a multi-stage adjusting mechanism, the cutting precision and quality are effectively improved, a unique accompanying treatment system can recover slag and filter smoke in real time, operation safety and environment friendliness are guaranteed, the overall automation degree is high, adaptability is high, installation can be flexible, and the equipment is suitable for distribution boxes of various specifications; the three functions of precise cutting, slag recovery and flue gas treatment are integrated, and synchronous cutting and treatment are achieved.

The application discloses a laser cutting machine, and relates to the technical field of cutting equipment, which comprises a rack, a grid placed on the rack and a slag cleaning mechanism moving linearly along the rack, wherein the slag cleaning mechanism is provided with a rotary cleaning assembly capable of jumping up and down; the rack is provided with a wavy guide rail along the moving direction of the slag cleaning mechanism; and the rotary cleaning assembly can jump up and down along with the wavy guide rail during the linear movement of the slag cleaning mechanism along the rack, so as to keep adhering to the grid with sawtooth tips. The rotary cleaning assembly can jump up and down along with the sawtooth tips of the grid, so that the rotary cleaning assembly can always adhere to the grid during the linear movement of the slag cleaning mechanism along the rack, and the slag remaining on the grid can be scraped off through rotation, so that the slag remaining on the grid can be thoroughly and efficiently removed.

The invention discloses chromium-free and carbon-free complex-phase corundum stuffing sand for smelting variety steel and a preparation method of the chromium-free and carbon-free complex-phase corundum stuffing sand. The stuffing sand is prepared from the following raw materials in parts by mass: 60 to 90 parts of complex phase corundum subjected to silica sol dipping and coating treatment, 5 to 30 parts of zircon sand, 0.5 to 10 parts of sintering aid, 0.5 to 2 parts of silica sol and 1.5 to 5 parts of aluminum-silicon modifier. The preparation method comprises the following steps: uniformly mixing the multiphase corundum subjected to silica sol dipping and coating treatment, the zircon sand and the sintering aid, adding the silica sol, uniformly mixing, adding the aluminum-silicon modifier, uniformly mixing, drying at 150-250 DEG C, removing false particles, and screening to obtain the stuffing sand. The ladle filler sand is suitable for smelting of special varieties of steel, a compact isolation layer can be rapidly formed on the hot surface of a nozzle part of a refined steel ladle, permeation and erosion of molten steel / slag are effectively prevented, the self-casting rate of the refined steel ladle of the variety of steel with high added value is increased, oxygen burning casting is reduced, continuous casting broken casting is reduced, efficient and smooth continuous casting production is guaranteed, and the quality of a steel casting blank is improved.

The present invention relates to a method, system and product for blending multi-source complex copper concentrate. The method comprises: sampling and analyzing components of various mixed copper concentrates to determine the percentage content of each copper concentrate in various mixed copper concentrates; establishing a linear multi-objective programming batching model with the quality of the mixed copper concentrate as the objective function and the percentage content of impurity elements in the copper concentrate as the constraint function; using the batching model to perform linear multi-objective programming, re-proportioning the percentage content of copper concentrate in the mixed copper concentrate, and determining the proportion of the mixed copper concentrate; combining the slag structure properties, calculating the type and amount of flux, and obtaining the raw materials for the furnace according to the proportion; based on the raw materials for the furnace, analyzing the smelting products using the copper metallurgical principles, and predicting the quality of the smelting products; analyzing the proportion of the raw materials for the furnace according to the quality of the smelting products and combining the production data, adjusting the objective function and the constraint function, and generating the raw materials for the furnace and the batching scheme with the optimal proportion. The present invention can improve the accuracy of ore blending.

The invention relates to the field of cabinet machining, and discloses a computer hardware production auxiliary device which comprises a rack, a cutting mechanism, a positioning mechanism and a slag collecting mechanism. According to the cutting device, the positioning mechanism is arranged, so that the slag collecting mechanism moves along with the cutting head of the cutting mechanism, and the slag collecting barrel is located under the cutting head all the time. When the cutting mechanism cuts a plate, gas sprayed out of the cutting head can blow slag generated during cutting downwards, at the moment, the slag is attracted by the second electromagnet after being cooled and falls into the slag collecting barrel, and the situation that the slag is solidified on the sword grid in the cutting process is avoided; according to the sword gate, the sword gate is arranged on the sword gate, the slag returning phenomenon caused by slag accumulation of the sword gate in the cutting process is caused, meanwhile, as the slag cannot be accumulated on the sword gate, it is ensured that a plate can be in a horizontal state after being placed on the sword gate, and the problems that the cutting edge is rough and positioning is wrong due to laser cutting focusing errors are avoided.

The invention relates to the technical field of ferrous metallurgy, in particular to low-reactivity Al-Ti inhibition type casting powder for continuous casting based on premelted hollow particles and a preparation technology of the low-reactivity Al-Ti inhibition type casting powder. Wherein the water-quenched melt particles comprise an Al-Ti inhibitor, a melt, aluminum oxide short fibers and carbon black, pre-sintered aluminum oxide and titanium dioxide serve as the Al-Ti inhibitor, a stable Al-Ti-O network structure is formed in the melt, the reaction activity of the slag and the high-activity Al-Ti molten steel is effectively reduced, the aluminum oxide short fibers are introduced to form an enhanced network, and the high-activity Al-Ti molten steel is obtained. According to the casting powder, nano silicon carbide and boron carbide are matched to form synergistic reinforcement, ethyl silicate hydrolysate, water glass and sodium carboxymethyl cellulose are adopted to construct a dual-bonding system, the casting powder of the hollow structure is prepared, and the mechanical strength of the casting powder is effectively improved.

The utility model relates to a sword grid slag removal splash-proof mechanism for alloy plate laser cutting, and effectively solves the problems that an existing laser sword grid slag remover is time-consuming and labor-consuming, reduces cutting efficiency and cannot effectively prevent slag from splashing. According to the sword grid slag removal splash-proof mechanism for alloy plate laser cutting, the top ends, attached with slag, of sword grid plates can be overturned to the bottom ends through the overturning mechanism, the first transverse driving mechanism and the second transverse driving mechanism can drive the slag removal mechanism to sequentially clean the slag attached to the side faces of the adjacent sword grid plates, cleaning is more thorough, manual operation is not needed, and the labor intensity of workers is reduced. Slag can be cleaned at any time, and a large amount of slag can be prevented from being accumulated on the sword grid plate, so that the slag generated during cutting is effectively prevented from splashing, and the good quality of the plate is guaranteed; and the sword grid plate can be cyclically overturned after cutting is conducted for a period of time, it can be guaranteed that laser cutting work is continuously conducted, slag on the sword grid plate can be cleaned in time, operation of the laser cutting machine cannot be affected, and the working efficiency is improved.

The invention relates to the technical field of welding materials, and particularly discloses a high-temperature-resistant flux-cored wire containing rare earth elements and a preparation method of the high-temperature-resistant flux-cored wire. The high-temperature-resistant flux-cored wire containing the rare earth elements comprises a welding wire skin and a flux core. The flux core comprises the following raw materials of dehydrated rutile, dehydrated potassium feldspar, zircon sand, metal chromium powder, metal nickel powder, electrolytic manganese, ferrotitanium, ferro-aluminum, potassium cryolite, potassium titanate, sodium titanate, fine iron powder, yttrium-based iron alloy powder, atomized ferrosilicon, nitrided ferrochrome, bismuth oxide, auxiliaries and the balance reduced iron powder. The auxiliary agent is a mixture of a zirconium-iron alloy, a titanium-iron alloy and an aluminum-magnesium alloy. A specific alloy auxiliary is introduced into the flux core to protect stable transition of rare earth yttrium, yttrium and multiple components synergistically optimize the weld joint performance, 253MA heat-resistant steel is matched, slag and electric arc regulation and control components and a reasonable process are matched, and the welding quality of the welding wire is improved.

The invention discloses a yielding crystallizer for an electroslag smelting casting three-dimensional variable curved surface casting and an electroslag smelting casting method, and belongs to the field of electroslag smelting casting. The receding crystallizer comprises a crystallizer body formed by combining a plurality of crystallizer blocks, internal molded surfaces of the crystallizer body are combined to form a crystallizer cavity, and the crystallizer cavity is used for containing molten metal and forming a casting with a three-dimensional variable curved surface; the receding structure is arranged on at least one crystallizer sub-block and is configured to allow the crystallizer sub-block to move in the preset direction in the solidification and shrinkage process of the casting so as to avoid shrinkage deformation of the casting; and the slag stopping structures are arranged between the adjacent crystallizer blocks and are used for sealing gaps generated by displacement after the crystallizer blocks are subjected to yielding displacement, so that slag leakage is prevented. The receding crystallizer can automatically receding when hindering deformation of a casting, space needed by metal shrinkage is provided in the electroslag casting process, and the finished product quality of the casting in the complex shape is improved.

The invention provides a laser jet assisted conformal micro-machining device and method for a complex free-form surface, and belongs to the technical field of laser machining, the laser jet assisted conformal micro-machining device mainly comprises a marble platform, a gantry support, an X sliding table, a Y sliding table, a Z sliding table, three groups of variable row reflectors, a laser machining unit, a water jet unit and a bus control system; the jet flow is used for assisting the conformal spray head, accurate positioning and non-directional water flow scouring are carried out on a workpiece subjected to laser machining, and the problems that heat is directionally gathered, and slag is accumulated in a single direction are solved.

The invention relates to a preparation method of a refractory material, in particular to a preparation method of a high-corrosion-resistance low-carbon magnesia-carbon refractory material. The high-corrosion-resistance low-carbon magnesia-carbon refractory material is prepared from fused magnesite aggregate, fused magnesite fine powder, Ti3SiC2 powder, crystalline flake graphite, corundum slag and phenolic resin. The prepared low-carbon magnesia-carbon refractory material has excellent oxidation resistance and slag corrosion resistance, the service life of the magnesia-carbon refractory material under the large scrap ratio smelting condition can be prolonged, and the cost is reduced from the perspective of refractory raw materials, so that the low-carbon magnesia-carbon refractory material has high economic benefits, meanwhile, the carbon content of the refractory material is lower, and the cost is lower. And high-temperature industrial carbon emission can be reduced. The oxidation index of the magnesia-carbon refractory material is 20-30% after the magnesia-carbon refractory material is oxidized in an air atmosphere of 1600-1700 DEG C for 2-5 h; and after the magnesia-carbon refractory material is eroded for 1-3 hours under the dynamic slag condition of 1600-1700 DEG C, the erosion index of the magnesia-carbon refractory material is 0.5-4%.

The invention discloses a laser cutting device for processing a printed circuit board, relates to the technical field of cutting devices for circuit boards, and solves the technical problems that molten slag at a cutting part is blown away by utilizing airflow, the molten slag with temperature may be blown to other parts of the surface of the circuit board, and additional damage is caused. Comprising a workbench, a vertical moving module is arranged above the workbench, and a laser cutting head is arranged on the front surface of the vertical moving module; the suction cooling mechanism is mounted on the outer side of the laser cutting head; external air can be sucked through negative pressure, the laser cutting part of the circuit board generates flowing airflow, slag generated by laser cutting of the circuit board is sucked, the flowing airflow is cooled, the laser cutting part of the circuit board is cooled while the slag is sucked, the heat influence of the circuit board is reduced, the sucked slag is cooled through cooling gas, and the service life of the circuit board is prolonged. When the molten slag is collected, the temperature of the molten slag is prevented from damaging a filtering part in the collecting barrel, and the molten slag can be better filtered and discharged conveniently.

The invention discloses a stainless steel welded pipe laser cutting device and method, and belongs to the technical field of stainless steel welded pipe machining.The stainless steel welded pipe laser cutting device comprises an operation table, a deslagging component is arranged on the upper side of the operation table and comprises a controller arranged on the left side of the front end of the operation table, and an electric push rod is fixedly connected to the left side of the upper end of the operation table; an electric push rod is fixedly connected to the outer side of the base, a fixed disc is fixedly connected to the telescopic end of the electric push rod, and a sealing ring is arranged on the outer side of the fixed disc in parallel in a sleeving mode. The arranged fixed disc can pull a workpiece in the moving process, and meanwhile water mist sprayed by an atomization spray head on the side face of the fixed disc cools residues generated during cutting; due to the fact that residues generated by cutting the workpiece can be cooled through water mist in the process of cutting the workpiece, the situation that the residues adhere to the interior of the workpiece due to heat of the residues is avoided, the forming probability of molten slag and adhering slag is effectively reduced, meanwhile, the workpiece is pulled after cutting is completed, and the cutting quality of the follow-up workpiece is guaranteed.