26results about How to "Improve grinding performance" patented technology

The manufacturing method of the grinding disc comprises the following steps: preparing a grinding disc material: uniformly mixing and stirring abrasive particles and a composite adhesive to obtain the grinding disc material; and drying the grinding disc material, pressing a die, heating and pressurizing, fixing and forming, and sintering at a preset temperature to obtain the grinding disc, wherein the abrasive particles comprise ceramic abrasive particles and diamond abrasive particles, and the ceramic abrasive particles and the diamond abrasive particles are mixed according to the weight ratio of 9.4: 0.6 to 9.6: 0.4. The grinding disc manufactured through the method is uniform in grinding material distribution, good in grinding effect and stable in performance, so that the product consistency is guaranteed, meanwhile, the manufacturing cost is low, and the manufacturing efficiency is high.

The invention relates to the technical field of workpiece grinding equipment, in particular to a port grinding device for corrugated pipe compensator production. The technical problem that when an existing grinding device grinds a port of a corrugated pipe, grinding is not sufficient enough, efficiency is low, and then the grinding effect is poor is solved. A port grinding device for corrugated pipe compensator production comprises an outer frame, one side of the outer frame is rotationally connected with a rotating frame, and one side of the outer frame is fixedly connected with a spring shifting piece. The driving motor drives the two-way threaded shaft and the tooth-missing bevel gear to rotate together, the two-way motor drives the grinding wheel and the single gear to rotate together, the two-way threaded shaft rotates to enable the corrugated pipe and the single gear to move up and down together, and the single gear moves upwards to stir the driven gear to enable the grinding wheel to grind an end opening of the corrugated pipe. And the tooth-missing bevel gear rotates to turn over the corrugated pipe, so that the grinding wheel grinds a port on the other side of the corrugated pipe, the use by workers is more convenient, and the grinding efficiency is improved.

The invention relates to the technical field of cement grinding aids, and particularly discloses an efficient composite Portland cement clinker grinding aid and application thereof. The grinding aid comprises a liquid A and a liquid B which are separated from each other. Wherein the solution A comprises a mixed solution of ethylene glycol and water and iron dihydrogen phosphate. Wherein the volume ratio of the ethylene glycol to the water is (3-3.7): 1, and the iron dihydrogen phosphate in the mixed solution is in a saturated state. The solution B comprises a sodium borohydride and / or potassium borohydride solution, a polycarboxylate superplasticizer and modified magnesium oxide powder. Wherein the mass fraction of the sodium borohydride and / or potassium borohydride solution is 3-5%, the mass fraction of the polycarboxylate superplasticizer in the solution B is 12-17%, and the content of the modified magnesium oxide powder is 4.5-7 g / L. The grinding aid disclosed by the invention can effectively eliminate the electrostatic effect of cement particles, reduce re-agglomeration among the particles and improve the dispersity of cement clinker particles, so that the grinding efficiency is improved.

The utility model discloses a grinding device for cutter production of a numerical control lathe, which relates to the technical field of cutter processing of numerical control machine tools and comprises a processing bottom plate, a grinding device is arranged on the processing bottom plate and comprises a grinding angle adjusting unit and a cutter limiting unit, and the grinding angle adjusting unit comprises a mounting base. Grafting arms are distributed on the two sides of the mounting base, the other ends of the grafting arms are connected with rotating sleeves, the rotating sleeves are provided with first adjusting shafts, second adjusting shafts are arranged in the middles of the first adjusting shafts, mounting sleeves are arranged at the two ends of the second adjusting shafts, concave frames are arranged on one sides of the mounting sleeves, and the concave frames are connected with grinding assemblies. The first adjusting shaft in the grinding angle adjusting unit is used for completing xy-axis rotation of the grinding assembly on the concave frame, the first adjusting shaft is matched with the second adjusting shaft to complete longitudinal rotation of the grinding assembly, and therefore the grinding assembly can rapidly adjust the grinding angle of a cutter, and the grinding effect is improved.

The invention belongs to the technical field of grinding wheel abrasives, and particularly relates to a diamond porous microsphere, a grinding wheel abrasive and a preparation method and application thereof. The preparation raw materials of the diamond porous microspheres comprise mixed powder, a binder and water, the mixed powder comprises a first ceramic bond, diamond and a pore forming agent. The first ceramic bond, the diamond and the pore forming agent are used as raw materials for preparing the diamond porous microspheres, the diamond porous microspheres have natural pores and prefabricated spherical pores, the porosity is high, and the self-sharpening performance of the grinding wheel grinding material can be improved; the grinding wheel abrasive material is prepared through secondary air degreasing sintering of the diamond porous microspheres, a new three-dimensional pore structure is formed among the naturally stacked diamond porous microspheres, the grinding wheel abrasive material with a'natural pore + prefabricated spherical pore + stacked pore 'multi-stage pore structure is obtained, the cooling, lubricating and chip removal effects of a grinding wheel can be greatly improved, and the service life of the grinding wheel is prolonged. Therefore, the grinding performance and the service life of the grinding wheel are improved.

The utility model discloses a grinding device for mechanical roller production, and relates to the technical field of mechanical roller production. The polishing device comprises a workbench, the top of the workbench is fixedly connected with a top seat, the left side of the top seat is provided with a rotating assembly, the top of the top seat is fixedly connected with a blocking shell, a first motor is arranged in the top seat, the left side of the top seat is fixedly connected with a fixing block, and the interior of the fixing block is rotationally connected with a polishing roller; the grinding roller and the output end of the front face of the first motor are both fixedly connected with belt pulleys, the rotating assembly comprises a supporting seat, and the right side of the supporting seat is fixedly connected with a stabilizing ring. According to the grinding device, the clamping block is arranged, specifically, the rotating rod is driven by the third motor to rotate, meanwhile, the clamping block is driven by the limiting rod to rotate, the mechanical roller rotates along with the clamping block, the rotating shaft rotates on the fixing ring, and the grinding effect can be improved through simultaneous rotation of the grinding roller and the mechanical roller, so that grinding is more uniform, and flaws are reduced.

The utility model relates to the technical field of bearing machining, and discloses a grinding machine tool for bearing surface machining, which comprises a machine tool body, a grinding mechanism is arranged at the top of the machine tool body, a driving mechanism is arranged on the left side of the grinding mechanism, and the grinding mechanism comprises a first grinding assembly and a second grinding assembly. The first grinding assembly is arranged on the left side of the top of the machine tool body, the second grinding assembly is arranged on the right side of the top of the machine tool body, in the using process, by arranging the grinding mechanism, the outer surfaces and one sides of bearings of different sizes can be ground at the same time in the bearing grinding process, and the grinding efficiency is improved; and under the action of a first air cylinder and a clamping plate, bearings of different sizes can be fixed, the stability of the bearings is guaranteed, and in the process of grinding the outer surfaces, a grinding roller can move left and right according to the sizes of the bearings, and all-directional grinding work is conducted.

The invention discloses a ceramic reinforced hard alloy sintered welding rod for surface laying welding of an oil gas well repair tool and a manufacturing method of the ceramic reinforced hard alloy sintered welding rod, the ceramic reinforced hard alloy sintered welding rod is prepared from polygonal hard alloy particles and soft metal, and the polygonal hard alloy particles improve the performance of a hard alloy material in the grinding process by utilizing the excellent grinding effect of a TiB2 and TiC composite ceramic material at high temperature; wC, TiC, TiB2, SiC, Mo and Co composite sintering materials are adopted, the hardness and the grinding performance of the hard alloy material are improved by optimizing the components, the content and the structural characteristics of the hard alloy material, and then the grinding and milling effect of the hard alloy material on high-strength steel pipes of P110 or above is improved. Cu-Ni-Zn-Mn-Si series powder is adopted as a soft metal material, so that the strength and the wear resistance of the sintered welding rod matrix soft metal are effectively improved, the problems that a traditional milling tool is weak in impact resistance, low in hardness and poor in cutting performance on P110 high-strength steel are solved, and the milling effect and the working efficiency are improved.

The utility model belongs to the technical field of steel handrail machining, and particularly relates to an end face grinding device for steel handrail machining, which comprises a bottom plate, a support is fixed on one side of the top of the bottom plate, an adjusting assembly is arranged on one side of the top of the support, first hydraulic cylinders are fixed at two output ends of the adjusting assembly, and mounting blocks are fixed on output shafts of the first hydraulic cylinders. A mounting ring is fixed to the bottom of the mounting block, an arc-shaped ball groove is formed in the inner side of the mounting ring, a ball block is arranged in the arc-shaped ball groove, rotating shafts are rotatably installed on the outer wall of the ball block in a penetrating mode, grinding wheels are fixed to the opposite ends of the two rotating shafts, and a mounting rod is fixed to the position, located above the mounting ring, of one side of the mounting block; a second hydraulic cylinder is rotationally mounted at one end of the mounting rod, and a fixing ring is rotationally mounted on an output shaft of the second hydraulic cylinder; according to the steel handrail grinding device, the section of a steel handrail can be comprehensively ground, the grinding effect is improved, the use flexibility of equipment is improved, and the grinding efficiency is improved.

The application provides a diamond multi-blade contour forming tool and a preparation method thereof, V is partially replaced by Nb, the content of V is strictly controlled, high-hardness VC is replaced by low-hardness NbC, and the grain boundary is purified and the carbide is refined by rare earth Ce, so that the grinding performance is multiplied compared with existing high-speed steel, the industry pain point that high hardness and easy grinding cannot be achieved at the same time is solved, and the machining difficulty and production cost of complex multi-blade contour are greatly reduced. The uniformity of the base body composition is ensured by vacuum melting + electroslag remelting, the coarse carbide is broken by multi-directional forging, the strength and toughness balance is realized by sectional preheating precise quenching + three times tempering, the high-strength combination of the PCD composite sheet and the tool body is realized by vacuum brazing, the contour precision control within ± 2 mu m is realized by five-axis precision grinding, and the forming tool perfectly adapts to the high-precision machining demand of the complex special-shaped structural part of consumer electronics.

The utility model relates to the technical field of grinding and polishing, in particular to a roller grinding device for harvesting agricultural machinery, which comprises a collecting bin, a collecting pump is mounted on one side of the collecting bin, a collecting pipe is inserted into the top of the collecting pump, an adjusting mechanism is mounted at the top of the collecting bin, and a clamping mechanism is mounted in the adjusting mechanism. A grinding mechanism is arranged at the top of the collecting bin, an adjusting mechanism comprises an adjusting seat, an adjusting groove is embedded in one side of the adjusting seat, an adjusting motor is installed at one end of the adjusting seat, and one end of the adjusting motor is in driving connection with a first bidirectional threaded shaft. According to the improved grinding device, the adjustable clamping mechanism is arranged in the grinding device to clamp and fix rollers with different diameters, the roller for the harvesting agricultural machine is prevented from deviating, the grinding effect of the grinding device is improved, meanwhile, the grinding mechanism with the adjustable angle is arranged to grind the arc-shaped surface of the roller for the harvesting agricultural machine, and the adaptability of the grinding device is improved; and the grinding effect of the grinding device is improved.

The invention relates to the technical field of grinding machining, and discloses a motor slip ring electrified online grinding device which comprises a workbench and a supporting assembly, and the workbench is further provided with a guide groove; the moving box is in sliding connection with the guide groove, and a reciprocating assembly used for driving the moving box to move is further arranged on the workbench; the two telescopic assemblies are symmetrically arranged on the moving box, fifth rotating shafts are rotationally installed on the two telescopic assemblies, and a grinding roller is fixedly installed between the two fifth rotating shafts; the driving mechanism comprises a driving assembly and a transmission assembly used for driving the driving assembly to work intermittently, and a one-way power assembly used for driving the transmission assembly to work is further arranged on the moving box; through cooperative arrangement of the reciprocating assembly, the telescopic assembly and the driving mechanism, the problem that an existing device is poor in grinding effect is solved, and the repairing quality of the motor slip ring is effectively improved.

The invention relates to the field of tire machining, in particular to grinding equipment and method for tire machining. The device comprises an operation frame, an outer circumference positioning assembly, an inner circumference positioning assembly and a grinding assembly. A horizontally-moving mounting plate I is arranged on one side of the operating frame, and a horizontally-moving mounting plate II is arranged on the other side of the operating frame; the peripheral positioning assembly is positioned on the mounting plate I, and peripheral positioning ends I of the peripheral positioning assembly are arranged up and down; the inner circumference positioning assembly is located on the second mounting plate, and the inner circumference positioning ends and the outer circumference positioning ends of the inner circumference positioning assembly are matched in a one-to-one correspondence mode; two groups of grinding assemblies are arranged, and each group of grinding assembly comprises a detachable inner periphery grinding piece and a detachable outer periphery grinding piece; the inner periphery grinding piece and the outer periphery grinding piece form a closed U-shaped grinding cavity with the adjustable size. The detachable inner periphery grinding piece and the detachable outer periphery grinding piece are arranged to be matched to form a closed U-shaped grinding cavity with the adjustable size, and therefore tire grinding is comprehensive, flexible, efficient and accurate.

The invention provides a silicon wafer surface grinding process which comprises slow descending pre-grinding and formal grinding, in the slow descending pre-grinding process, an upper grinding disc descends to be in contact with a lower grinding disc at a gradually-reduced descending speed, uneven points on a silicon wafer are ground, and in the formal grinding process, the whole silicon wafer is subjected to slow pressure grinding. The method has the beneficial effects that the instant impact pressure on the silicon wafer is reduced, fragments caused by concentrated stress are reduced, the crack rate of the silicon wafer is reduced, the surface parameter TTV of the silicon wafer is improved, and the grinding effect of the silicon wafer is improved.

The invention relates to the technical field of grinding processing, and discloses an online grinding device for a motor slip ring, comprising: a workbench and a supporting component, wherein a guide groove is provided on the workbench; a moving box slidably connected to the guide groove, wherein a reciprocating component for driving the moving box to move is provided on the workbench; a telescopic component, wherein two groups of telescopic components are symmetrically arranged on the moving box, and a fifth rotating shaft is rotatably installed on both groups of telescopic components, and a grinding roller is fixedly installed between the two groups of fifth rotating shafts; and a driving mechanism, wherein the driving mechanism comprises a driving component and a transmission component for driving the driving component to work intermittently, and a unidirectional power component for driving the transmission component to work is also provided on the moving box; the invention avoids the problem of poor grinding effect of the existing device through the coordinated arrangement of the reciprocating component, the telescopic component and the driving mechanism, and effectively improves the repair quality of the motor slip ring.

The invention belongs to the field of grinding tools, and particularly relates to a diamond grinding tooth, a preparation method of the diamond grinding tooth and a thinned grinding wheel, and the preparation method comprises the following steps: S1, preparing an aqueous solution in which tetraethoxysilane and ethanol are dissolved, and then hydrolyzing the tetraethoxysilane; s2, preparing an aqueous solution in which boric acid and metal inorganic salt are dissolved; s3, adding the organic mixed solution prepared in S1 into the inorganic mixed solution prepared in S2, and then adding a cross-linking monomer and a cross-linking agent; s4, superfine diamond suspension liquid is added into the mixed solution obtained in the S3; s5, adding an initiator into the mixed solution obtained in S4 for polymerization, and drying; and S6, crushing the gel obtained in the step S5, calcining, carrying out cold pressing, and sintering. Compared with the prior art, the defect that in the prior art, the dispersibility of superfine diamond in a ceramic bonding agent is poor is overcome, uniform dispersion of the superfine diamond in the ceramic bonding agent is achieved, and the grinding roughness and the abrasive ratio are both superior to those of existing commercially available products.

The application relates to a composite adjustable double-ring diamond cup-shaped grinding wheel and belongs to the technical field of glass edge grinding. The composite adjustable double-ring diamond cup-shaped grinding wheel comprises an inner wheel and an outer wheel sleeved on the inner wheel, a plurality of inner wheel cavity grooves are arranged on the inner wheel in a circumferential interval, a plurality of outer wheel cavity grooves are arranged on the outer wheel in a circumferential interval, inner wheel grinding pieces and outer wheel grinding pieces are respectively fixedly installed in the inner wheel cavity grooves and the outer wheel cavity grooves, the inner wheel grinding pieces and the outer wheel grinding pieces are arranged in a circumferential overlap and stagger mode, the inner wheel grinding pieces and the outer wheel grinding pieces are respectively elastic grinding pieces and rigid grinding pieces, and the outer peripheral surface profile of the part of the inner wheel grinding piece radially greater than or equal to the inner diameter of the outer wheel is an arc surface or an inclined surface. The application is favorable for avoiding the generation of steps in the grinding process, thereby avoiding the edge collapse of the workpiece.

The utility model relates to the technical field of coated abrasive tools, in particular to a chip removal channel combination structure and a coated abrasive tool, the chip removal channel combination structure comprises at least two kinds of chip removal channels with leading numbers, one of the chip removal channels is at least three-way, the chip removal channels are arranged between abrasive materials, and the chip removal channels are mutually communicated without blocking; the center lines of the adjacent chip removal channels intersect to form intersection points, and the chip removal channels between the adjacent intersection points are in a straight line shape or a curve shape. According to the utility model, the chip removal channels are communicated with each other and are not blocked, the center lines of the adjacent chip removal channels are intersected to form the chip removal channel intersection points, and the chip removal channels between the adjacent intersection points are straight lines or curved lines. The structure can improve the chip removal efficiency, prevent abrasive chip accumulation, prolong the service life of the grinding tool and improve the grinding effect, and is suitable for various grinding working conditions.

The invention relates to a high-performance vacuum brazing diamond product and a preparation process thereof, the high-performance vacuum brazing diamond product comprises a steel substrate, an adhesive layer, a diamond body, a metal alloy coating and a mixed brazing filler metal layer, and the adhesive layer is one or more of a thermosetting adhesive and a thermoplastic adhesive; the diamond body in the prepared diamond product does not have obvious corrosion marks, so that the surface smoothness of the diamond is effectively protected, the surface corrosion of the high-temperature liquid brazing filler metal to the diamond body is prevented, and the basic special properties of low surface friction coefficient and small abrasion of the diamond body are kept; the friction resistance in the grinding process can be effectively reduced, the grinding efficiency is improved, and the service life of a product is prolonged. By adding the metal alloy coating on the surface of the diamond body, uniform mixing or regular and ordered arrangement with a brazing filler metal layer is facilitated, diamond particles are more uniformly distributed, agglomeration and accumulation are avoided, more diamond particles can effectively participate in the grinding process due to uniform particle distribution, the grinding efficiency is improved, and the service life of the diamond is prolonged. Meanwhile, the problem of stress concentration caused by agglomeration and accumulation is avoided, and the strength and durability of the product are improved.

The invention provides a superhard grinding wheel with a good grinding effect. The superhard grinding wheel comprises a base, a plurality of CBN grinding discs and a plurality of grooves. The base comprises a first base body and a second base body, and the second base body is detachably installed on the first base body. The multiple CBN sand pieces are all installed on the second base body and define an annular structure. The multiple grooves are formed in the sides, back on to the second base body, of the multiple CBN sand pieces correspondingly. The invention further provides a preparation method of the superhard grinding wheel with the good grinding effect, and the preparation method comprises the following steps that the grinding material and the resin binding agent are prepared, the grinding material and the resin binding agent are mixed to obtain mixed powder, the mixed powder is put into a mold for cold pressing, after drying treatment, the mixed powder is put into a high-temperature sintering furnace to be sintered, and the CBN grinding disc is obtained. Grooves are formed in the surfaces of the CBN sand discs through a diamond tool, the multiple CBN sand discs are installed on the base, and the multiple CBN sand discs are trimmed through laser smelting. According to the superhard grinding wheel with the good grinding effect and the preparation method, the grinding effect is good.

This invention provides a grinding station for the interior cavity of shell-type products, including a mounting mechanism and a grinding mechanism. The mounting mechanism has an actuator that can move along the X, Y, and Z axes. The grinding mechanism is mounted on the actuator. The moving actuator drives the grinding mechanism to extend into the shell cavity to grind the inner wall of the shell cavity. The grinding mechanism includes a self-rotating rigid first grinding component. A secondary grinding assembly is provided on one side of the first grinding component, coaxially arranged with the first grinding component, and includes a flexible second grinding component. When unfolded, the second grinding component is flush with or protrudes from the grinding end face of the first grinding component. During processing, the inner wall of the shell cavity is first ground by the first grinding component, and then the second grinding component is unfolded for a second grinding. During the unfolding process, the grinding mechanism does not need to exit the shell cavity. The mounting mechanism can be a three-axis machine tool or a robotic arm, which moves the actuator to drive the grinding mechanism into the shell cavity.

The invention discloses a super wear-resistant diamond composite material and a preparation method thereof, and the preparation method comprises the following steps: mixing Fe powder, Co powder, Ni powder, Cu powder, W powder and Sn powder, and sintering to obtain a multi-component alloy Fe (15-30) Co (10-15) Ni (10-15) Cu (30-50) W (2-5) Sn (5-10); and mixing the multi-component alloy, the diamond, the modified porous carbon and an adhesive according to the mass ratio of (90-100): (3-5): (0.5-1): (0.5-2), and sintering to obtain the super wear-resistant diamond composite material. According to the invention, the proportion of each component in the multi-component alloy is optimized, the sintering performance and the holding force of a matrix to diamond are improved by introducing Sn with a low melting point, and the modified porous carbon is well dispersed in the multi-component alloy, so that the overall strength is improved, the grinding performance of the composite material is obviously improved, the service life of the composite material is obviously prolonged, and meanwhile, the heat conductivity coefficient is improved.

The utility model discloses an angle-adjustable cutter grinding and fixing mechanism which comprises a grinding main body, a moving groove is formed in the grinding main body, the top of the grinding main body is movably connected with a cutter fixing main body through the moving groove, the top of the cutter fixing main body is fixedly connected with an adjusting seat, and an adjusting groove is formed in the top of the adjusting seat. A sliding frame is movably connected to the inner side of the adjusting groove, an adjusting plate is movably connected to one side of the sliding frame through a movable bolt pin, a clamping groove is formed in the top of the adjusting plate, a clamping mechanism is fixedly connected to the side, away from the clamping groove, of the top of the adjusting plate, a moving motor is fixedly connected to one side of the adjusting seat, and a moving lead screw is fixedly connected to the driving end of the moving motor. According to the cutter grinding and fixing mechanism, the flexibility of the cutter grinding and fixing mechanism is improved through the cutter fixing main body, the adjusting seat, the sliding frame and the adjusting plate, so that the cutter grinding and fixing mechanism can adjust the angle and the position at the same time, and the cutter grinding effect is improved.

The utility model relates to an anti-blocking abrasive belt. Comprising a base layer and an abrasive material layer bonded to the base layer, the abrasive material layer comprises a plurality of abrasive material strips sequentially distributed in the transverse direction, each abrasive material strip comprises a plurality of abrasive material units sequentially distributed in the longitudinal direction, and the adjacent abrasive material strips are arranged at intervals and form first chip removal grooves; every two grinding units adjacent in the longitudinal direction are arranged at intervals and form a second chip removal groove, the longitudinal direction is parallel to the length direction of the base layer, and chip accumulation holes are formed in the grinding units. Grinding objects generated during grinding of the grinding material layer can be smoothly discharged through the first chip removal groove and the second chip removal groove during high-speed operation, the chip accumulation holes are formed in the grinding material unit and can be used for collecting the grinding objects in the middle of the grinding material unit and throwing the grinding objects out in the machining process, the grinding objects are effectively prevented from blocking the sand surface of the abrasive belt, and the grinding effect is improved; and meanwhile, the first chip removal groove and the second chip removal groove can improve the heat dissipation effect, and the grinding temperature is prevented from being too high.

The utility model discloses a double-inclined grinding wheel grinding machine, and aims to overcome the defects that the working efficiency of grinding operation of channels on two side walls of a long groove of a miniature sliding rail is low, the contact arc between a grinding head and a grinding surface is long, the linear speed of grinding is low, the grinding efficiency and the grinding effect are reduced, and grinding lines are easily generated on the grinding surface. The grinding machine comprises a machine body and two grinding units installed on the machine body, grinding heads are arranged on the grinding units, the two grinding units are arranged in a spaced mode, the grinding heads on the two grinding units are arranged in a staggered mode along the X axis, and the two grinding heads are obliquely arranged downwards in the direction that the two grinding heads are close to each other in the Y axis to form two obliquely-inserted grinding head structures. A long groove is formed in the micro sliding rail, and the edges of the lower portions of the two grinding heads are attached to the two side walls of the long groove for grinding. The grinding efficiency of the channels in the two side walls of the long groove of the micro sliding rail is high, the contact arc length of the grinding head and the grinding face is long, the grinding linear speed is high, the grinding efficiency and the grinding effect can be improved, and grinding lines are avoided.

The invention provides a rare earth-containing hard alloy sintered welding rod for surface laying welding of a petroleum workover tool and a manufacturing method thereof.The manufacturing method includes the steps that the sintered welding rod is obtained by sintering hard alloy particles and soft metal, the component content of the hard alloy particles in the sintered welding rod is 60-75%, the component content of the soft metal in the sintered welding rod is 25-40%, and the component content of the hard alloy particles in the sintered welding rod is 20-30%. The hard alloy material adopts a WC, TiC, NbC, Cr2C3, rare earth Ce and Co composite sintering material, the hardness, toughness and grinding performance of sintered hard alloy particles are improved by optimizing the components and content of the hard alloy material, and then the grinding and milling effect of the hard alloy material on the high-strength tubular column is improved. Cu-Ni-Zn-Mn series material powder is adopted as a soft metal material, so that the strength and the wear resistance of matrix metal are improved, the problem that WC particles are prone to falling off in the milling operation process is effectively solved, and the milling efficiency of a hard alloy paving and welding material is improved during field workover operation.