51results about How to "Meet the needs of processing and production" patented technology

The invention belongs to the technical field of machine tool detection, and relates to a detection and correction method of locating accuracy of a rotating shaft of a five-axis machine tool. According to the detection and correction method, an angle RTCP value of the rotating shaft in the horizontal or vertical state is measured by means of a straight bar and used as a reference value of RTVP accuracy; the RTCP accuracy of the machining tool is detected by means of a ball bar and a dial indicator, and measurement is conducted every five degrees; by means of the relation between the angle RTCP accuracy and the locating accuracy of the rotating shaft, the locating accuracy of the rotating shaft is corrected. By means of the detection and correction method, correction and compensation of the locating accuracy of the rotating shaft of the five-axis machine tool can be conducted easily, conveniently and rapidly, the detected and corrected accuracy of the rotating shaft of the five-axis machine tool can meet requirements of part manufacturing, and detection and correction time and related costs are saved.

The invention provides a coating-type binder used for bounding nitrile butadiene rubber and a metal framework and a preparation method. The binder is prepared from a composite binder, rubber and an auxiliary agent; wherein the composite binder consists of a main binder and an auxiliary binder which become A component, the main binder consists of cobalt boracyl 23 and cobalt neocaprate, and the auxiliary binder is a composite organic salt containing nickel and vanadium; the rubber is nitrile butadiene rubber; the auxiliary agent consists of an age resister, a plasticizer, a strengthening agent, a loading agent, an accelerator, a activator and a vulcanizing agent which are of conventional use in rubber product production, A component is dispersed in rubber material and coordinates with the age resister, the plasticizer, the strengthening agent, the loading agent, the accelerator, the activator and the vulcanizing agent to constitute binding master batch B; the binding master batch B is dissolved by solvent of oil to prepare the coating-type binder of the invention. The coating-type binder of the invention not only maintains various excellent properties of the primary direct adding type cobalt salt binder such as high strength bonding, ageing resistance and the like, but also can be used in a coating way like imported coating binder product, thereby having obvious using effect.

The invention provides a coating-type binder used for bonding natural rubber and a bare steel framework and a preparation method. The coating-type binder is prepared from a composite binder, rubber and an auxiliary agent, wherein the composite binder consists of a main binder and an auxiliary binder which become A component, the main binder consists of cobalt boracyl 23 and cobalt neocaprate and the auxiliary binder is a composite organic salt containing nickel, vanadium and calcium; the rubber is the mixed rubber of natural rubber, styrene-butadiene rubber and cis-butadiene rubber; the auxiliary agent consists of an age resister, a plasticizer, a strengthening agent, an accelerator, a activator and a vulcanizing agent which are of conventional use in rubber product production, A component is dispersed in rubber material and coordinates with the age resister, the plasticizer, the strengthening agent, the accelerator, the activator and the vulcanizing agent to constitute binding master batch B; the binding master batch B is dissolved by solvent of oil to prepare the coating-type binder used for bonding natural rubber and bare steel framework. The coating-type binder of the invention can be used in middle-size and small-size rubber product industry, and can also be used on the refurbishment of radial ply tires of steel wires and the production of rubber products such as steel wire reinforcement traveling belt joint glue filling.

The invention provides a coating-type binder used for bonding natural rubber and a metallic framework and a preparation method. The coating-type binder is prepared from a composite binder, rubber and an auxiliary agent, wherein the composite binder consists of cobalt boracyl 23 and cobalt neocaprate, the rubber is natural rubber, the auxiliary agent consists of an age resister, a plasticizer, a filling agent, a strengthening agent, an accelerator, an activator, a silane coupling agent and a vulcanizing agent which are of conventional use in rubber product production. The composite binder is dispersed in rubber material and coordinates with the age resister, the plasticizer, the filling agent, the strengthening agent, the accelerator, the activator, the silane coupling agent and the vulcanizing agent to form a bonding master batch, and the bonding master batch is dissolved by solvent of oil to prepare a mucilage, thus the coating-type binder used for bonding natural rubber and metallic framework is obtained. The coating-type binder used for bonding natural rubber and metallic framework can be used in middle-size and small-size rubber product industry, and can also be used on the refurbishment of radial ply tires of steel wires and the production of rubber products such as steel wire reinforcement traveling belt joint glue filling.

The invention discloses a wood sawing machine, which comprises a fuselage, a turntable, a sawing assembly and an L-shaped bracket. The lower end of the straight part is fixed on the upper surface of the pedestal, and the lower surface of the horizontal part of the bracket is fixed with a horizontal guide rail for horizontal reciprocating sliding of the sawing assembly, and a vertical guide rail for vertical reciprocating sliding of the sawing assembly is connected below the horizontal guide rail , the sawing assembly includes a cutting knife and a sawing drive mechanism for driving the cutting knife to rotate. The cutting knife of the present invention can perform arc-shaped cutting on the horizontal plane with the circumferential rotation of the turntable. At the same time, under the integrated control of the control unit, the cutting knife can perform simultaneous cutting of lateral sliding and circumferential rotation, effectively realizing the implementation of any arc size on the wooden board. The cutting of curved section and other irregular sections meets the needs of processing and production of different board shapes, and at the same time is easy to operate, low in cost and strong in practicability.

The invention relates to the field of tube laser cutting, in particular to an oval tube alignment method. An oval tube is horizontally clamped before the alignment operation. The oval tube alignment method comprises the steps of 1, setting the top-view surface of the oval tube as a reference surface, arranging two detection points on the reference surface, and measuring the height difference and the horizontal distance between the two detection points; 2, working out an alignment rotating angle for eliminating the height difference; 3, rotating the oval tube according to the alignment rotating angle, and completing the alignment operation. The invention further relates to a laser cutting device for the oval tube. The alignment operation is carried out on the oval tube, the oval tube is clamped in an alignment mode according to the detection result and then is cut, the requirement for processing production is met, it is ensured that the cut contour position precision is within the reasonable error range, and the processing production yield is improved; the laser cutting generality is higher, and the tube purchase, transportation and storage cost and conditions are lowered.

The invention relates to the technical field of tube cutting, in particular to a tube curvature compensation method. A curved tube is clamped before compensation and rotated around a rotating shaft, the rotating shaft is a horizontal shaft passing through the center of a clamping position, and the curved tube comprises four detection surfaces. The method includes the first step of conducting curvature detection on the curved tube, the second step of calculating the curvature of the curved tube according to the height obtained through detection, and the third step of conducting curvature compensation according to the curvature obtained through calculation. The curvature of the curved tube is detected and the position relation of the cutting surface and a cutting head of the curved tube is adjusted according to a detection result, so that the demands for processing production are met, it is guaranteed that cut contour position precision is within a reasonable error range, and the percent of pass of processing production is increased; laser cutting universality is higher, and cost and conditions for selective purchasing, carrying and storing of tubes are reduced.

The invention discloses a ball-in-ball machining fixture and a utilization method thereof. The fixture comprises an index plate, a positioning plate, a front vertical supporting plate, a supporting plate, an adjustable supporting seat, a bottom plate, a centre seat, a live centre, a fixing plate, a rear vertical supporting plate and a taper shank positioning seat. The index plate which is a disc is mounted on the taper shank positioning seat through a rotating shaft and capable of rotating around the rotating shaft by 360 degrees; 20 positioning holes are uniformly and annularly distributed in the index plate; the positioning plate is a sector plate, and five positioning holes are uniformly distributed in the positioning plate along an arc line. The ball-in-ball machining fixture has advantages that firstly, marking of lines and points on the surface of a ball is avoided; secondly, repeated correction of a relative position of a tool to drilling points on the surface of the ball in machining of each hole is avoided; thirdly, machining and manufacturing efficiency is improved, and errors of manual correction and positioning are avoided; fourthly, simplicity in operation, structural stability, accuracy in positioning and convenience in demounting and transporting are realized. Ball-in-ball rotation angles are positioned by cooperation of the live centre and the index plate, and accordingly precision of drilling positions is guaranteed.

The invention discloses a cobalt salt adhesive for adhering ethylen e-propylene-diene mischpolymere and a bare steel framework and a preparation method thereof. The adhesive comprises a compound adhesive, phenolic resin and aids, wherein the compound adhesive consists of a main adhesive and an auxiliary adhesive; the main adhesive comprises cobalt boroacylate and cobalt neocaprate; the auxiliary adhesive is vanadium isooctanoate and cerium isooctanoate; the phenolic resin comprises a methyl donor and a methyl receptor; and the aids comprise a toughening agent, an activator, a curing activator, a silane coupling agent and a curing agent. The preparation method comprises the following steps of: dispersing the compound adhesive in the phenolic resin carrier, and matching with the aids; and adhsdissolving by using a mixed solvent to prepare adhesive cement to obtain the cobalt salt adhesive for adhering the ethylen e-propylene-diene mischpolymere and the bare steel framework. The cobalt salt adhesive has the advantages of high thermal stability, high dynamic mechanical properties, direct coating, low cost, and application to adhering ethylen e-propylene-diene mischpolymere including mixed rubber of the ethylen e-propylene-diene mischpolymere, natural rubber, reclaimed rubber or reclaimed rubber powder and the bare steel framework material.

The invention discloses a cobalt salt bonding agent for bonding nitrile butadiene rubber with a bare steel framework and a preparation method thereof, the bonding agent consists of a composite bonding agent, phenolic resin and auxiliaries, the composite bonding agent comprises a main bonding agent and an auxiliary bonding agent, wherein the main bonding agent comprises cobalt boroacylate and cobalt neocaprate, the auxiliary bonding agent is a composite organic salt containing vanadium, nickel and cerium, the phenolic resin comprises a methylene donor and a methylene acceptor, and the auxiliaries comprise a toughener, an activating agent, a vulcanizing activator, a silane coupling agent and a vulcanizing agent; and the cobalt salt bonding agent for bonding the nitrile butadiene rubber with the bare steel framework is obtained by dispersing the composite bonding agent in a phenolic resin carrier, using the auxiliaries for matching and dissolving in mixed solvent for preparing rubber slurry. The cobalt salt bonding agent has the advantages of good thermal stability, good dynamic mechanical properties, capability of being directly coated for use and low cost, and is applicable to high-strength bonding mixed rubber of the nitrile butadiene rubber and regenerated rubber or regenerated rubber powder with material of the bare steel framework.

The invention discloses a cobalt salt bonding agent for bonding ethylene propylene diene monomer with a copper or zinc framework and a preparation method thereof, the bonding agent consists of a composite bonding agent, phenolic resin and auxiliaries, the composite bonding agent comprises a main bonding agent and an auxiliary bonding agent, wherein the main bonding agent comprises cobalt boroacylate and cobalt neocaprate, the auxiliary bonding agent is cerium 2-ethylhexanoate, the phenolic resin comprises a methyl donor and a methyl acceptor, and the auxiliaries comprise a toughener, an activating agent, a vulcanizing activator, a silane coupling agent and a vulcanizing agent; and the cobalt salt bonding agent for bonding the ethylene propylene diene monomer with the copper or zinc framework is obtained by dispersing the composite bonding agent in a phenolic resin carrier, using the auxiliaries for matching and dissolving in mixed solvent for preparing into glue slurry. The cobalt salt bonding agent has the advantages of good thermal stability, good dynamic mechanical properties, direct coating for use and low cost, and is applicable to high-strength bonding the ethylene propylene diene monomer including mixed rubber of the ethylene propylene diene monomer, natural rubber and reclaimed rubber or reclaimed rubber powder with the copper, zinc, copper alloy, zinc alloy, zinc-plated and brass-plated frameworks.

The invention discloses a cobalt salt adhesive for adhering natural rubber and copper and zinc frameworks and a preparation method thereof. The adhesive comprises a compound adhesive, phenolic resin and aids, wherein the compound adhesive comprises cobalt boroacylate and cobalt neocaprate; the phenolic resin comprises a methyl donor and a methyl acceptor; and the aids comprise a toughening agent,an activating agent, a curing activator, a silane coupling agent and a vulcanizer. The preparation method comprises the following steps of: dispersing the compound adhesive in the phenolic resin carrier, matching with the aids, dissolving by using a mixed solvent to prepare adhesive cement so as to obtain the cobalt salt adhesive for adhering the natural rubber and the copper and zinc frameworks.The cobalt salt adhesive has the advantages of high thermal stability, good dynamic mechanical performance, direct coating, and low cost, and is suitable for high-strength adhesion between the reclaimed rubber or reclaimed rubber granule-containing natural rubber, including the natural rubber and mixed rubber of the natural rubber and general-purposed synthetic rubber, and copper, zinc, copper alloy, zinc alloy, zinc-plated and brass-plated frameworks.

The invention discloses a cobalt salt bonding agent for bonding natural rubber and a naked steel framework and a preparation method thereof. The bonding agent comprises a compound bonding agent, a phenolic resin and an aid, wherein the compound bonding agent consists of a main bonding agent and an auxiliary bonding agent; the main bonding agent comprises cobalt boroacylate and cobalt neodecanoate; the auxiliary bonding is 2- ethyl vanadium caproate; the phenolic resin comprises a methyl donor and a methyl acceptor; and the aid comprises a toughening agent, an activating agent, a vulcanizing activator, a silane coupling agent and a vulcanizing agent. The cobalt salt bonding agent for bonding natural rubber and the naked steel framework is obtained by dispersing the compound bonding agent into a phenolic resin carrier, adding the aid, and dissolving into adhesive cement by using a mixed solvent. The cobalt salt bonding agent has the advantages of high thermal stability, high dynamic property, direct coating and low cost, an is suitable for high-strength bonding of natural rubber containing reclaimed rubber or reclaimed rubber powder such as natural rubber and mixed rubber consisting of the natural rubber and general synthetic rubber with a naked steel framework material.

The invention discloses a detection device with a classified storage function for LED processing, and relates to the technical field of LED processing detection, the detection device comprises a workbench, an annular sliding groove is formed in the front side of the workbench, and an annular sliding plate is slidably connected in the annular sliding groove. According to the detection device with the classified storage function for LED processing, through mutual cooperation of the workbench, the annular sliding groove, the annular sliding plate, an L-shaped limiting plate, a driving motor, a fixing frame, a gear and annular teeth, a circular processing detection assembly line can be formed; the lamp bead type LED lamp can be continuously placed on the annular sliding plate to be conveyed and detected, and the lamp bead type LED detection efficiency can be greatly improved; an extrusion block I, an extrusion block II, a spring I and a semi-ring fixing groove are matched with one another,so that lamp beads of the lamp bead type LED lamp can be directly placed in a fixing space formed between the two semi-ring fixing grooves in an inverted mode to be fixed, and then detection can be conducted along with rotating conveying of the annular sliding plate.

The invention discloses a coating-type binder used for bonding ethylene propylene diene rubber and a metal framework and a preparation method. The coating-type binder is prepared from a composite binder, rubber and an auxiliary agent, wherein the composite binder consists of a main binder and an auxiliary binder which become A component, the main binder consists of cobalt boracyl 23 and cobalt neocaprate and the auxiliary binder is a composite organic salt containing nickel and calcium; the rubber is ethylene propylene diene rubber and natural rubber; the auxiliary agent consists of an age resister, a plasticizer, a strengthening agent, an accelerator, a activator and a vulcanizing agent which are of conventional use in rubber product production, A component is dispersed in rubber material and coordinates with the age resister, the plasticizer, the strengthening agent, the accelerator, the activator and the vulcanizing agent to constitute binding master batch B; the binding master batch B is dissolved by solvent of oil to prepare the coating-type binder used for bonding ethylene propylene diene rubber and metal framework. The coating-type binder of the invention is suitable for the high tenacity bonding between the mixed rubber of ethylene propylene diene rubber and natural rubber and copper, zinc, copper alloy, zinc alloy and aluminum alloy framework.

The invention discloses a cobalt salt binding agent for binding a nitrile rubber and a bare steel framework and a preparation method thereof. The binding agent comprises a composite binding agent, a rubber and auxiliary agents; the composite binding agent consists of main binding agents and auxiliary binding agents to form a component A, wherein the main binding agents comprise cobalt acylate and cobalt neodecanoate, and the auxiliary binding agents comprise diethyl vanadium caproate and diethyl cerium caproate; the rubber is the nitrile rubber; the auxiliary agents comprise anti-aging agent, plasticizer, reinforcing agent, accelerator, active agent and vulcanizing agent; and the component A is dispersed into a nitrile rubber carrier and matched with the auxiliary agents to form binding master batch B, and the binding master batch B is dissolved by an ethyl acetate solvent to form mucilage so as to obtain the cobalt salt binding agent for binding the nitrile rubber and the bare steel framework. The binding agent has the advantages of good thermal stability, good dynamic mechanical property, direct coating and use and low cost, and is suitable for high-strength binding among the nitrile rubber, the nitrile composite rubber and the bare steel framework material.

The invention provides a roll-pressing narrow lap welding machine and moveable lining plates thereof. The welding machine comprises a machine body, an inlet side lining plate assembly and an outlet side lining plate assembly, wherein the inlet side lining plate assembly consists of a first fixed lining plate, a first moveable lining plate and a first connecting piece; the outlet side lining plate assembly consists of a second fixed lining plate, a second moveable lining plate and a second connecting piece; the first moveable lining plate and the second moveable lining plate are provided with opposite first and second connecting side parts and opposite first and second non-connecting side parts; concavo-convex notches are formed in the first non-connecting side part and the second non-connecting side part; the first connecting side part and the second connecting side part are moveably connected with one side part of the first fixed lining plate and one side part of the second fixed lining plate through the first connecting piece and the second connecting piece; and the other side part of the first fixed lining plate and the other side part of the second fixed lining plate are fixedly connected with the inlet side and the outlet side of the machine body. The roll-pressing narrow lap welding machine and the moveable lining plates thereof have the advantages that the fact that the roll-pressing narrow lap welding machine equipment meets the processing and production requirements of hot-dipped aluminum zinc plates can be effectively guaranteed; spare part cost, processing cycle and processing difficulty are reduced; and the outage failure times are reduced and the waste defective rate is reduced.

The invention discloses a cobalt salt adhesive for bonding nitrile rubber and a copper / zinc frame and a preparation method thereof. The adhesive comprises a compound adhesive, phenolic resin and assistants, wherein the compound adhesive comprises a main adhesive and an auxiliary adhesive, wherein the main adhesive comprises cobalt borate and cobalt neodecanoate; the auxiliary adhesive is compound organic salt containing nickel and vanadium; the phenolic resin comprises a methylene donor and a methylene acceptor; and the assistants comprise toughening agents, activating agents, vulcanization activators, silane coupling agents and vulcanizing agents. The preparation method comprises the following steps: dispersing the compound adhesive in the carrier phenolic resin, and dissolving by a mixed solvent under the actions of the assistants to obtain adhesive cement, thereby obtaining the cobalt salt adhesive for bonding the nitrile rubber and the copper / zinc frame. The cobalt salt adhesive provided by the invention has the advantages of high thermal stability, favorable dynamic mechanical properties and low cost, can be directly coated, and is suitable for high-strength bonding of mixed rubberof nitrile rubber and regenerated rubber or regenerated rubber powder and a copper / zinc / copper alloy / zinc alloy / zinc plated / brass-plated frame.

The invention discloses flame cutting equipment for steel plate profile machining, and belongs to the technical field of steel plate profile machining. The flame cutting equipment comprises a base assembly, a front frame assembly is arranged at one end of the base assembly, a rear frame assembly is arranged at the other end of the base assembly, a guide assembly is arranged between the front frame assembly and the rear frame assembly, a mounting assembly is arranged on the bottom side of the guide assembly, a cutting assembly is arranged on the bottom side of the mounting assembly, and the base assembly comprises a fixed base. A material receiving groove is fixedly formed in the upper end of the fixed base, an electric push rod is fixedly installed at the upper end of the inner side of the material receiving groove, a material carrying bracket is fixedly installed at the telescopic end of the electric push rod, the front frame assembly comprises an assembly front frame, and a guide through opening is formed in the surface of the assembly front frame. The machining and cutting work efficiency can be improved, the machining and manufacturing diameter size of round block parts can be adjusted, the machining and manufacturing use requirements suitable for the round block parts of different diameter specifications can be met conveniently, and the adjustability and adaptability of cutting equipment are improved.

The present invention discloses a slide member rotation prevention device comprising a main body for placing a slide member, the slide member is provided with a guide groove, the main body is provided with a first guide round hole and a second guide round hole, the plane of the axle wire of the first guide round hole and the plane of the axle wire of the second guide round hole are not parallel to the sliding direction of the slider member; the slide member rotation prevention device further includes two guide conical-surface pins, the guide conical-surface pins are respectively inserted into the guide groove through the first guide round hole and the second guide round hole, and the guide conical-surface pins are respectively matched with gaps of the first guide round hole and the second guide round hole. The slide member rotation prevention device makes up for the lack of rotation during sliding of a slide member in a main body in the prior art, can effectively control a rotation gap of the slide member in the main body in micron level, meanwhile reduces machining requirements of the guide conical-surface pins and the guide groove, and improves production efficiency. In addition, the device also has the advantages of simple structure, easy processing and the like.

The invention discloses an adjustable food slicing device. The device comprises a shell. A driving unit is mounted on one side of the shell. A cutting chamber is formed in the shell. The side wall ofthe cutting chamber is rotationally connected with a rotary shaft. Cutting blades are mounted on the rotary shaft. One side of the shell is fixedly connected with a bearing pedestal. One end of the rotary shaft is sleeved with the bearing pedestal. Clamping mechanisms are arranged between the cutting blades. Through first clamping blocks and second clamping blocks on the clamping mechanisms and first clamping grooves and second clamping grooves in the cutting blades, the cutting blades are clamped, adjustable bolts are adjusted from an open groove by opening a cover plate, a limit clamping plate is pressed or loosened, meanwhile, the clamping mechanisms between the cutting blades are clamped or loosened at the same time, the distance between the cutting blades is adjusted, the cutting blade thickness of the device can be adjusted within a certain range, and the device can better meet requirements of factory food processing and production.

The invention provides an auxiliary device for making a foam model for automobile mould processing, relates to the technical field of automobile moulds and solves the problems that the traditional auxiliary device for making an automobile foam model cannot adjust the position and angle of the foam model according to the processing needs of the automobile foam model, and cannot meet the processingneeds of the difficult foam model. The auxiliary device comprises a receiving plate and a placing plate; the receiving plate is installed at the top of a base by a bolt, and the receiving plate is a square plate structure; two drive motors are provided, and the two drive motors are respectively connected with an external control circuit through power wires; two drive assembly slots are provided, and the two drive assembly slots are respectively installed at the front and rear ends of the top of the receiving plate; and the auxiliary device can adjust the placing plate at the top of the receiving plate according to the processing and manufacturing needs of the foam model, change the position and angle of a foam block at the top of the placing plate, and meet the processing and manufacturingneeds of different parts of the foam model well.

The invention discloses a mailbox device. The mailbox device comprises a machine frame. A sliding cavity is formed in the machine frame. A mounting groove is formed in the part, above the sliding cavity, in the machine frame. An output cavity extending left and right is formed between the sliding cavity and the mounting groove in a mutual communicating mode, and an end port of the output cavity faces rightwards. An undercarriage is slidably mounted in the sliding cavity. A mounting base is fixedly arranged in the center of the inner bottom wall of the sliding cavity. A first driving machine isarranged in the mounting base. Sliding tables are slidably mounted on the inner bottom walls, on the left side and the right side of the mounting base, of the sliding cavity. First screw holes are formed in the sliding tables. Frist screws are mounted in the first screw holes in a matched mode. The outer side ends of the left first screw and the right first screw are rotationally connected with the inner walls of the left side and the right side of the sliding cavity in a matched mode correspondingly.

The invention relates to the technical field of piano processing, and discloses a four-axis piano soundboard frame cambered surface processing machine which comprises a fixed bottom plate. A fixed vertical plate is fixedly connected to the upper surface of the fixed bottom plate, a motor plate is fixedly connected to the surface of the fixed vertical plate, and a motor is connected to the rear portion of the motor plate through bolts. A machining mechanism is arranged in the fixed vertical plate, and a discharging mechanism is arranged on the upper surface of a connecting base. According to the four-axis piano soundboard frame cambered surface machining machine, through rotation of the motor and rotation of two rotating handles, a balance plate can be driven to move at an oval radian, thena tool is driven to rotate through the meshing effect of gears, and the tool can operate at a fixed radian while rotating, so that arc-shaped processing of a raw material wood board is realized, thesize and the position of processing each time are the same, the overall working efficiency and the processing quality are well improved, and the requirements of processing production are met.

The invention relates to a method for graphite ore enhanced flotation purification through microwave roasting pretreatment, and belongs to the technical field of graphite purification. According to the method, the low-grade fine flake graphite ore difficult to float is subjected to microwave roasting pretreatment to strengthen flotation to improve the graphite purification effect, the fixed carbon content of the graphite ore is 5%-20%, the main components of impurities are oxides of elements such as Fe, Al, Ca, Mg and Si, the water content is 1% or below, the graphite ore is subjected to microwave roasting pretreatment for 5-30 min and then subjected to crushing and wet grinding, and flotation is performed for many times to obtain a graphite product with the fixed carbon content of 95%-97%. The method can be used for effectively purifying the graphite ore, so that the graphite meets the production requirements; and the purification method has the advantages of low energy consumption, easiness in operation, high product purity, easiness in industrialization and the like.