87results about How to "Improve cutting performance" patented technology

The present invention relates to the technical field of cutting fluids, and in particular to a water-based high-lubricity cutting fluid and a preparation method thereof, comprising triethanolamine, an oily corrosion inhibitor, a lubricating additive, benzotriazole, a surfactant, a potassium hydroxide solution, a pH regulator and deionized water. The water-based high-lubricity cutting fluid in the present invention is compounded by lubricating additives, triethanolamine, an oily corrosion inhibitor, benzotriazole, a surfactant and the like, wherein the sulfide fatty acid ester embedded in the lubricating additive is thrown out from the pores under the action of centrifugal force when subjected to a high centrifugal speed, and adheres to the metal surface to form a dense sulfide film, which plays a lubricating role, can effectively reduce shear stress, reduce friction and power consumption, reduce the temperature of the friction part between the tool and the workpiece and the tool wear, improve the cutting performance of the workpiece material, and improve the lubrication performance of the cutting fluid, so that it has the characteristics of small usage and high cutting quality.

The utility model relates to the field of epoxy terrazzo plate processing, in particular to a cutting positioning device special for an epoxy terrazzo plate. The technical problem that in the cutting process of the epoxy terrazzo plate, the cutting quality of the epoxy terrazzo plate is reduced due to the fact that the epoxy terrazzo plate is not provided with a good positioning structure, the efficiency is low, the cutting face is not neat, and the inclination phenomenon occurs is solved. According to the technical scheme, the cutting positioning device special for the epoxy terrazzo plate comprises a cutting table and further comprises a clamping assembly and a cutting assembly. The clamping assembly is arranged, a second driving motor is started to drive a second threaded lead screw to rotate, two sets of limiting sliding blocks are made to move inwards or outwards at the same time for adjustment, adjustment is conveniently conducted according to plates of different sizes, and a first driving motor is started to drive a first threaded lead screw to rotate; and therefore, the moving frame can be adjusted to move left and right, and the plates can be automatically pushed to the cutting assembly conveniently.

The invention relates to the field of casting, and discloses a production method of green sand as-cast high-plasticity nodular cast iron QT450-18, which comprises the following steps of: preparing pig iron, waste steel and foundry returns according to a certain proportion, and preparing the green sand as-cast high-plasticity nodular cast iron QT450-18 by using auxiliary materials such as a silicon carbide pretreatment agent, a high-temperature graphitization carburant, a rare-earth magnesium silicon iron nodulizer, a silicon barium inoculant and a silicon strontium inoculant. And purity and component stability of molten iron are ensured. In the smelting process, purification and adjustment are carried out through accurate temperature control and segmented addition of auxiliary materials, then spheroidizing is carried out through a pouring method, and the microstructure of a casting is optimized through ladle-to-ladle inoculation and stream inoculation. The final casting has excellent mechanical properties, including tensile strength greater than or equal to 440 MPa, yield strength greater than or equal to 300 MPa, elongation greater than or equal to 16%, and V-shaped notch normal temperature impact absorption energy greater than or equal to 8 J. The method is simple and convenient to operate, high in production efficiency and suitable for large-scale industrial production.

The invention discloses a titanium and titanium alloy cutting tool coating and a preparation method thereof, the titanium and titanium alloy cutting tool coating comprises a coating substrate and a double-layer coating deposited on the substrate, and the double-layer coating sequentially comprises a base layer and a functional layer from the substrate side to the surface side of the double-layer coating. The base layer is composed of a metal compound TiBx, and the functional layer is composed of a metal compound TaSiy. The titanium and titanium alloy cutting tool coating provided by the invention has relatively high wear resistance, high temperature resistance, oxidation resistance and bonding resistance, the bonding strength between the coating and a matrix is good, the production process is simple, the production cost is low, and the titanium alloy cutting efficiency can be effectively improved.

The utility model provides a centrifugal composite high-speed steel roller, which belongs to the technical field of high-speed steel rollers and comprises a roller body and a reinforcing component, the reinforcing component comprises a high-speed steel layer arranged on the outer wall of the roller body, the high-speed steel layer is made of high-speed steel, and a wear-resistant reinforcing layer is arranged inside the high-speed steel layer and made of hard alloy. A wear-resistant reinforcing layer is arranged in the roller body, a transition layer is arranged in the wear-resistant reinforcing layer, the transition layer is made of nodular cast iron, a toughness reinforcing layer is arranged in the transition layer, and the toughness reinforcing layer is made of alloy steel. The high-speed steel can effectively resist high temperature and high pressure, the rolling precision and surface quality of the roller are ensured, the nodular cast iron can be more stable due to the good toughness and strength, the alloy steel is utilized, breakage or damage is conveniently prevented in the rolling process during die casting, and the roller is firm and durable.

The utility model provides a circular saw blade with positioning structures, which comprises a saw blade body provided with an assembling groove, one side of the assembling groove is provided with a first side wall, the other side of the assembling groove is provided with a second side wall, the first side wall and the second side wall are opposite to each other, the first side wall is provided with a first positioning structure, and the second side wall is provided with a second positioning structure; the blade is arranged in the assembling groove, the blade is provided with a first side face and a second side face which are opposite, the first side face is provided with a first corresponding structure, the second side face is provided with a second corresponding structure, the first corresponding structure abuts against the first positioning structure, and the second corresponding structure abuts against the second positioning structure. The saw blade mainly aims to enable the blade to be rapidly and accurately installed on the saw blade body, prolong the service life of the blade and clamp the blade without being pressed by additional screws.

This invention belongs to the field of grinding disc manufacturing technology, specifically relating to a diamond positioning and implanted grinding disc and its manufacturing method. The grinding disc substrate undergoes a series of processes including degreasing and activation treatments, followed by basic nickel plating to form a base nickel plating layer. Then, using photolithography, a photosensitive dry film pattern with pre-drilled micro-holes is created on the surface of the nickel plating layer. Adhesive is then applied to fill the micro-holes, and diamond abrasive grains are implanted, ensuring the sharp corners remain upwards for initial fixation. Finally, the photosensitive dry film is removed, and a thicker nickel plating reinforcement treatment is performed, ensuring the diamond abrasive grains are firmly encapsulated by the nickel plating layer. This method utilizes photolithography to achieve precise positioning and uniform distribution of the diamond abrasive grains on the substrate surface, and through process control, maintains the abrasive grains in a favorable cutting posture with their sharp corners upwards, significantly enhancing the grain holding strength and effectively preventing loosening, collapse, or detachment. The resulting grinding disc exhibits superior cutting efficiency and stability.

Provided is a steel material which has excellent melt cracking resistance, excellent heat-working cracking resistance, and excellent machinability, and which is capable of achieving high fatigue strength when made into a component for a mechanical structure. This steel material has a chemical composition described in the description, Fn defined by formula (1) is 0.45-1.05, the number density of fine Bi particles, which are Bi particles having a circle-equivalent diameter of 0.1-1.0 [mu] m, at a position 0.08 R from the surface of the steel material (R is the radius) is 15.00 particles / mm2 or more, the number density of coarse Bi particles, which are Bi particles having a circle-equivalent diameter of 10.0 [mu] m or more, is 0.25 particles / mm2 or less, and the thickness of the steel material is 0.5 [mu] m or less. At a position 0.65 R deep from the surface of the steel material, the number density of the fine Bi particles is less than 15.00 particles / mm < 2 >, and the number density of the coarse Bi particles is more than 0.25 particles / mm < 2 >.

The utility model discloses a kind of split type exploitation diamond composite sheet, belong to diamond composite sheet technical field, including diamond pedestal and diamond surface layer, the upper surface edge position of diamond surface layer is provided with wear-resistant arc-shaped back edge, diamond surface layer's upper surface middle position integrally has several cutting knives, several cutting knives are annular array and are arranged at the surface position of diamond surface layer, the two sides of cutting knife all have cutting bevel;By setting diamond pedestal and gold face layer cooperation assembly plug post and assembly bolt use, diamond pedestal and diamond surface layer split type design, after being inserted into assembly slot by assembly plug post, and using assembly bolt to assemble, diamond composite sheet of split type design can only dismount and replace diamond surface layer when appearing cutter body abrasion in use process, while retaining diamond base layer, it is convenient to dismount and replace, and can avoid the tediousness of dismounting diamond pedestal and affect operation efficiency.

This invention discloses a medium carbon steel for steering screws in new energy vehicles and its production method. The chemical composition of the medium carbon steel, by mass percentage, is as follows: C: 0.45%~0.70%, Si: 0.25%~0.55%, Mn: 0.45%~1.05%, Cr: ≤0.40%, Mo≤0.40%, Ni≤0.40%, P≤0.035%, S: 0.015%~0.035%, O≤0.0012%, with the balance being Fe and unavoidable impurities. The production method includes a complete process: molten iron pretreatment – ​​converter smelting – LF refining – RH furnace vacuum degassing – continuous casting – rolling – quenching and tempering – finishing – sub-critical quenching – low-temperature tempering. By controlling the composition to reduce the addition of expensive alloying elements, and through a composite heat treatment of "quenching and tempering + sub-critical quenching + low-temperature tempering," a hardness gradient of ≥60HRC on the surface and 22~28HRC in the core is achieved, with no decarburized layer on the surface. Simultaneously, strict control of non-metallic inclusions enhances the purity of the steel. This invention's product is compatible with cyclone milling processes, exhibits minimal quenching deformation, and can be straightened, meeting the high precision and long service life requirements of steering screws in new energy vehicles.

The utility model relates to the technical field of machining lathes, and discloses a cam transmission mechanism of a machining lathe, which comprises a screw rod, a pillow seat is sleeved on the screw rod in a threaded manner, a ram is mounted on the pillow seat and arranged on the lathe, a spline shaft is coaxially arranged at the end part of the screw rod, and the end part of the spline shaft is provided with a cam shaft. A rotating shaft is coaxially installed at the end, away from the lead screw, of the spline shaft, a motor is installed at the end of the rotating shaft, the rotating shaft is rotationally sleeved with a support through a bearing, and the support is installed on a lathe. The lead screw and the spline shaft are connected through an overload clutch mechanism. A cam transmission mechanism of a machining lathe solves the problems that in the prior art, when a cutter is abraded, the cutting effect of the cutter is poor, when a ram slides according to the running speed of a hydraulic cylinder, the abraded cutter can seriously affect the cutting speed of the cutter, and then the cutter is prone to being clamped when the ram runs. And both the motor and the hydraulic cylinder are damaged.

The invention discloses a preparation method and device of a hair follicle-like composite microstructure. According to the method, by means of the thermal deformation performance of the memory alloy material, the electrode deformation section made of the memory alloy material goes deep into the pit formed in the surface of the cutter through laser machining, the deformation section is heated to be in a circular arc shape, and an electrochemical etching method is adopted; an electrochemical system formed by an electrode, a cutter, a power supply device and electrolyte in the pit is used for enabling the rotating electrode to etch the pit into hair follicle structures, then flocking glue doped with magnetic particles is injected into the hair follicle structures, fiber bundles are implanted into the hair follicle structures, and then the hair follicle structures are formed. And after flocking is completed, the magnetic particles in the hair follicle structures are magnetized, and then the work of preparing the hair follicle-imitating composite microstructure on the surface of the tool is completed. According to the prepared cutter surface hair follicle-imitating composite microstructure, the cutter can achieve the continuous wetting effect in the working process, the good wetting performance is achieved, and then the cutting performance of the cutter is improved.

This invention discloses a free-machining high-strength aluminum-lithium alloy, its preparation method, and its applications, belonging to the field of alloy materials technology. The free-machining high-strength aluminum-lithium alloy has the following weight percentages of elements: Li: 3.5–5.5%, Cu: 2.6–3.1%, Zn: 6.8–7.1%, Mg: 2.1–3.0%, Y: 1.5–4.0%, Bi: 0.85–1.05%, In: 0.05–0.08%, Cr: 0.05–0.45%, Ti: 0.02–0.04%, with the balance being Al. This invention involves batching, smelting, refining, online refining, online degassing and filtration, casting, homogenization, extrusion, and two-stage aging treatment to finally obtain a free-machining high-strength aluminum-lithium alloy with a uniform microstructure. This invention has a reasonable component ratio, low manufacturing cost, and the resulting product has excellent strength and hardness, and exhibits excellent surface finish after dry machining.

The invention relates to the field of machine manufacturing, and provides a method for machining a multi-slope part by using a three-axis machining center, which replaces a five-axis machining center and reduces the manufacturing cost, and adopts the scheme that firstly, the three-axis machining center is used for machining one side of the part to be a multi-slope, and a process block is selected to be adhered to the multi-slope surface of the part; the outline formed after the part on the side is combined with the process block is changed into a shape capable of being aligned by a three-axis machining center through milling; then the bonded part and the process block are turned over, and the other side of the part is machined through the three-axis machining center; and finally, the bonded process blocks are removed, and the machined part is obtained. The method is suitable for machining of various mold parts.

The utility model relates to an oil exploitation drilling tool. The drilling tool comprises a drill body, three evenly-distributed cones, a PDC cutting structure and a plurality of auxiliary assemblies. The tooth wheel is composed of a tooth column and three layers of tooth palms, and coarse and fine layered crushing is carried out step by step, so that the drilling efficiency is improved. The PDC cutting structure is arranged at the end of the drill body and comprises a triangular prism, a column groove, a main blade, an auxiliary blade and a side blade, large-diameter PDC cutting parts are arranged on the main blade and the auxiliary blade, PDC cutting parts with the diameters gradually reduced are arranged on the side blade, the cutting effect is optimized, and the adaptability of the drilling tool in a hard rock stratum is enhanced. The adaptability of the drilling tool in soft and hard rock stratums is further improved through the small blades and the small-diameter PDC cutting pieces on the rectangular plate, and it is ensured that the drilling tool works stably and efficiently. The overall design effectively reduces the abrasion of the drilling tool, prolongs the service life, improves the drilling efficiency, and reduces the mining cost. The drilling tool is suitable for rock stratums with different hardness and has a wide application prospect in oil exploitation.

The utility model relates to a high-strength mechanical tooth for waste treatment, which comprises a blocky mechanical tooth body, one end of the mechanical tooth body tilts upwards to form a working head in a flat tool nose shape, and the periphery of the upper surface of the mechanical tooth body behind the working head sinks downwards. Slope faces located on the two sides of the rear portion of the working head and a downwards-inclined tail portion are formed, so that waste chips and sewage generated after the working head treats waste products can conveniently flow out through the slope faces, the portion, located on the lower surface of the mechanical tooth body, of the lower portion of the slope faces is an assembling face, and limiting protruding blocks are arranged on the assembling face. Bolt holes are formed in the limiting convex blocks, the limiting convex blocks are clamped into corresponding grooves of the waste disposer, and then bolts are inserted into the bolt holes, so that the mechanical tooth body and the waste disposer are connected and fixed. The utility model has the advantages of simple structure, convenience in installation and use, good firmness, reasonable structure, high hardness and high wear resistance, greatly improved working efficiency and the like.

The invention relates to the field of machining, and discloses a coated tool and a coating preparation process thereof.The coated tool comprises a tool bit, a tool bar is integrally and fixedly connected to the bottom of the tool bit, a tool fixing structure is fixedly connected to the bottom of the tool bar, and a threaded groove for locking is formed in the upper end of the side face of the tool fixing structure; a rotary knob for fixing is in threaded connection in the area, corresponding to the threaded groove for locking, of the side face of the tool fixing structure, a first cooling liquid channel is formed in an inner cavity of the tool bit, the inner cavity of the tool fixing structure is hollow and communicates with the inner cavity of the tool bit, and an alloy supporting rod is movably inserted into the inner cavity of the tool fixing structure; according to the coating cutter, the self-locking gasket is used for preventing looseness, mounting and dismounting are easy and convenient, the built-in cooling liquid channel is used for heat dissipation and lubrication, multiple assemblies are matched for stable positioning, the coating technology is precise, the performance is improved, the stability, working efficiency, machining precision and adaptability of the cutter are greatly improved, the service life of the cutter is greatly prolonged, and the operation difficulty and production cost are reduced.

The invention discloses a copper alloy material for an automobile networking camera lens, which comprises the following components in percentage by mass: 20 to 30 percent of Zn, 0.05 to 0.08 percent of P, 0.6 to 0.8 percent of Bi, 0.06 to 0.09 percent of Sn, 0.01 to 0.03 percent of Ce and the balance of copper. In the forming process of the copper alloy material, a refining agent comprises, by mass, 10%-20% of potassium fluoborate, 20%-30% of potassium fluotitanate, 20%-40% of potassium fluozirconate and 15%-30% of sodium tetraborate, the alloy formula and the refining agent components are designed in the scheme, the multiple components in the refining agent are shared, formed copper alloy grains and structures are refined, bismuth phase distribution is improved, and the copper alloy material is good in mechanical property and high in mechanical strength. And the cutting performance is outstanding.

The invention belongs to the technical field of welding, and particularly relates to nickel-based brazing filler metal for brazing of a red copper oxygen lance nozzle and a brazing process method.The nickel-based brazing filler metal is prepared from, by mass, 5.5%-8.0% of Cr, 1.5%-3.0% of Se, 1.0%-2.5% of Mo, 1.0%-3.5% of W, 3.5%-6.0% of Si, 2.5%-4.0% of B, 2.0%-3.5% of Fe, 1.5%-3.5% of Ti, 3.5%-6.0% of Cu, 3.0%-5.5% of Zn, 1.0%-3.5% of Re, 1.0%-2.0% of Ag and the balance Ni. The added metallic silver and selenium can improve the conductivity and expandability of the brazing filler metal, improve the cutting performance and reduce the brazing temperature, and the added metallic titanium can refine crystal grains and is combined with chromium, molybdenum and tungsten to generate excellent alloying performance, so that the corrosion resistance and the post-welding stability are improved.

The utility model relates to the technical field of milling machining, concretely to line board precision milling cutter of replaceable tool bit, including tool bit and tool bar, the one end center of tool bit is installed with the plug -in rod, the side of plug -in rod is installed with the limiting rod perpendicularly, the upper end center of tool bar is seted up with the spigot, the side of spigot is seted up with the limiting mouth, when the plug -in rod is inserted with spigot and cooperates, limiting rod slides into the inboard of limiting mouth, and the both sides of tool bar are installed with the limiting component. In this line board precision milling cutter of replaceable tool bit, the plug -in rod is seted up in the one end center of tool bit, and the limiting rod is installed perpendicularly in the side, and the spigot and limiting mouth are seted up correspondingly in tool bar, and after the plug -in cooperation of both, limiting component will block limiting rod in limiting mouth. This structure design makes the tool bit replacement process extremely simple, only needs to insert the plug -in rod into the spigot, and promotes limiting rod to slide into limiting mouth, and can complete installation through limiting component fixedly, and when disassembling, reverse operation, and the tool bit replacement time is greatly reduced.

The invention relates to quenched and tempered steel for a large-specification wind power fastener. The fastener steel comprises the following chemical components in percentage by mass: 0.38 to 0.45 percent of C, 0.22 to 0.30 percent of Si, 1.52 to 1.60 percent of Mn, less than or equal to 0.011 percent of P, 0.008 to 0.025 percent of S, 0.55 to 0.65 percent of Ni, 1.21 to 1.31 percent of Cr, 0.50 to 0.58 percent of Mo and the balance of Fe and inevitable impurity elements. The whole technological process comprises the steps of burdening, KR molten iron pretreatment, converter or electric furnace smelting, LF refining (sulfide denaturation treatment), degassing, continuous casting, warm conveying to a heating furnace, heating, high-pressure water descaling, rolling, waste heat quenching treatment, tempering, turning, packaging and warehousing. The diameter of the fastener steel ranges from 80 mm to 130 mm, the martensite content of the core area after overall quenching reaches 90% or above, the core-surface hardness difference after quenching is controlled within 3 HRC, and the fastener steel achieves large specification, high dimensional precision and excellent comprehensive mechanical performance at the same time.

The invention discloses a strengthening and toughening heat treatment production method of a 50CrVA steel elastic element for a bridge, and belongs to the technical field of steel preparation, and the method comprises the steps of blanking, free forging, annealing, rough turning, quenching and tempering. Free forging is conducted, the initial stage temperature is 1200 + / -10 DEG C, and the final forging temperature is 950 + / -10 DEG C; annealing is conducted, the annealing temperature is 860 + / -10 DEG C, heat preservation is conducted for 2.5-3.5 h, furnace cooling is conducted to 400 + / -10 DEG C, and air cooling is conducted; quenching is conducted, the quenching temperature is 915 + / -10 DEG C, the heat preservation time is 20 min, and oil cooling is conducted; the tempering temperature is 500 + / -20 DEG C, the heat preservation time is 3 h, and oil cooling is conducted. The method has the advantages that the cutting performance of the steel is improved through annealing, and deformation and cracking during quenching are reduced. Meanwhile, undissolved carbides and aphanitic martensite structures are obtained, and good wear resistance is guaranteed. And the fracture toughness in a medium-temperature tempering state is improved by quenching at 915 DEG C. And finally, martensite is promoted to start to decompose through medium-temperature tempering, and quenching internal stress gradually disappears. But part of solid solution carbon begins to be separated out in the form of cementite and can be pinned for dislocation, and a certain strengthening effect on a matrix is achieved. Meanwhile, due to the fact that the tempering temperature is slightly low, most alloy elements are still in a matrix, and solid solution strengthening still plays a main role. And when tempering is carried out within the temperature range, the test steel can keep certain hardness. Through quenching and tempering processes after annealing, the 50CrVA steel elastic element for the bridge, which is excellent in strength and hardness and high in toughness, can be obtained.

The utility model discloses a turning tool bar facilitating machining of motor parts. The turning tool bar comprises a tool body, an inner cooling device, an angle sleeve and a pressing cap. A blade groove is formed in the head of the tool body, and the turning tool is arranged in the blade groove and pressed by the pressing cap. An inner cooling device is arranged in the cutter body; the inner cooling device comprises an upper spraying pipe arranged on the upper portion of the cutter body and a lower spraying opening formed in the front end of the cutter body. The upper spraying pipe and the lower spraying opening are both communicated with a cooling water channel in the cutter body; the section of the angle sleeve is triangular, and the angle sleeve is fixed to a machine tool after being tightly attached to the side of the cutter body. The utility model has the advantages that the production cost is reduced; according to the inner cooling device, the problem of overheating during machining is well solved, the cutting performance is improved, cutting can be washed away through high-pressure cooling water, and the problem of long cuttings is well solved.

The present invention relates to a short-spacing diamond uniform arrangement forming device; the device comprises a diamond particle distribution component; the distribution component comprises a diamond particle adsorption mechanism, a diamond vibration flattening device, and a servo electric cylinder; the diamond vibration flattening device is arranged below the diamond particle adsorption mechanism to flatten the diamond particles in the material tray; the diamond particle adsorption mechanism comprises a diamond uniform arrangement adsorption device and an adsorption tube; the diamond uniform arrangement adsorption device comprises an arrangement locking plate A and an arrangement locking plate B respectively; the arrangement locking plate A and the arrangement locking plate B are respectively provided with fixed hole arrays A and fixed hole arrays B with different arrangements; the adsorption tube comprises an adsorption tube A and an adsorption tube B, which respectively pass through the fixed hole array A and the fixed hole array B. The adsorption tube A and the adsorption tube B successively release diamond particles at the female mold cavity according to the process requirements, and the formed diamond arrangement is denser than the arrangement of the adsorption tube A / adsorption tube B, thereby improving the cutting performance of the diamond tool head.

The utility model discloses a cutter for a food processor, the cutter is provided with a cutter shaft hole, one side of the cutter is provided with a downward bending section, the cutter between the cutter shaft hole and the downward bending section is also provided with a pre-crushing sharp knife extending upwards, and the pre-crushing sharp knife and the downward bending section are integrally formed; according to the cutter for the food processor, the downward bending section and the integrally-formed pre-crushing sharp knife are additionally arranged on the cutter, the defects that the cutter is formed by assembling a plurality of accessories, so that the structure is complex, and the machining and mounting process difficulty is large are overcome, and in addition, the downward bending section and the upwards-extending pre-crushing sharp knife are additionally arranged, so that the cutting efficiency is improved. The cutter actually forms cutting in upper, middle and lower range spaces, the cutting surface is enlarged, and the cutting efficiency and the cutting effect are improved; more importantly, the downward bending section can better cut and scrape away food materials adhered to the side wall of the barrel body.

This utility model discloses a shredder and its cutting device. The cutting device includes at least one first cutter and at least one second cutter, both of which are connected to the rotating shaft of a drive mechanism. The first cutter has a first blade body extending along a first direction, and the second cutter has a second blade body extending along the first direction. The first and second blade bodies are staggered circumferentially along the rotating shaft, with the first blade body parallel to the first direction and the second blade body at an angle to the first direction. By setting an angle between the first and second blade bodies, the cutting device of this utility model offers multiple cutting angles, increasing the cutting range and enabling rapid and complete shredding of fruits and vegetables, effectively improving cutting efficiency and achieving better cutting results.

The present invention is specifically a brush wire telescopic descaling device for an electrochemical reaction chamber, which solves the problem of deterioration of water quality during water treatment in an existing electrochemical reaction chamber. A brush wire telescopic descaling device for an electrochemical reaction chamber, the reaction chamber body includes a cylindrical inner cathode cylinder located in the middle, an outer cathode cylinder is arranged on the outer side of the inner cathode cylinder, and a plurality of electrode cylinders are arranged between the inner cathode cylinder and the outer cathode cylinder, and the electrode cylinder is composed of a cathode cylinder and an anode cylinder; a descaling brush body is arranged on the outer side of the inner cathode cylinder, the inner side of the outer cathode cylinder, and the inner and outer sides of the cathode cylinder, and a brush wire is slidably penetrated on the lower part of the circumferential surface of the descaling brush body. In the present invention, the brush wire is a telescopic profiling brush wire, the front blade surface of the cutting end has a small squeezing effect on the scale layer to be cut, and the cutting end has good cutting performance, which not only removes scale cleanly, but also consumes less energy for descaling. In addition, the descaling brush body rotates while moving, and the cutting end forms a peeling cutting on the scale layer, and the energy-saving effect is more significant.

The application provides a silicon bronze bar and a preparation method thereof. The silicon bronze bar contains the following elements and mass percentages: Si: 2.5-3.8 wt%, Mn: 1.0-1.8 wt%, Ni: 0.5-2.0 wt%, Fe: 0.01-0.3 wt%, Zn: 0.01-0.5 wt%, and the balance of Cu and inevitable impurities. The microstructure of the cross section of the silicon bronze bar includes alpha phase, Ni2Si phase, Fe3Si phase and Mn2Si phase, and the area ratio of the Mn2Si phase is 4-8%. The alloy composition and microstructure are designed, and the content ranges of Si, Mn, Ni and Fe elements are controlled. The microstructure of the silicon bronze bar has second phase particles of Ni2Si, Fe3Si and Mn2Si with certain sizes in addition to the matrix phase alpha phase. The Ni2Si phase and Fe3Si phase are strengthening phases, which can improve the strength of the alloy. The Mn2Si phase is a brittle phase, and the area ratio of the Mn2Si phase is controlled, so that the silicon bronze bar has high strength and excellent cutting performance.

The invention discloses a low-carbon, high-sulfur, bismuth-containing free-cutting steel and a manufacturing method thereof. The free-cutting steel is prepared by a certain ratio of manganese, sulfur and bismuth and a certain content of oxygen. Beneficial inclusions are precipitated during solidification and dispersed in the steel. The inclusions mainly include a manganese sulfide soft core structure, a manganese sulfide oxygen composite inclusion hard core structure, and a manganese sulfide bismuth composite inclusion hard core structure. The inclusions are dispersed in the steel, and during the rolling process, the manganese sulfide soft core structure is prevented from being elongated and deformed, so that the morphology of the inclusions changes to a spindle shape or a spherical shape that is beneficial to cutting, thereby achieving the purpose of improving the cutting performance and surface quality of the material.

The utility model relates to the technical field of mechanical part machining, and discloses a deburring cutter which comprises a cutter body, a cutting edge is fixedly installed at the bottom of the cutter body, cutting lines are arranged on the outer wall of the cutting edge, a first cutting block is arranged at the bottom of the cutting edge, a connecting opening is formed in the inner side of the cutter body, and a second cutting block is arranged on the outer wall of the connecting opening. A positioning hole is formed in the inner side of the cutter body, and a threaded hole is formed in the cutter body. According to the deburring cutter, through the design of the horn-mouth-shaped cutting edge, after the cutter enters a corner, cutting is conducted according to the position where burrs are located, the burrs are machined to be in a shape similar to a chamfer for deburring, in this way, machining is stable and efficient, and the cutting performance can be improved and the abrasion resistance of the cutter can be enhanced in cooperation with upper thread type rising cutting lines; when normal cutting is carried out, the bottom of the cutting edge can make contact with a machined object, the overall contact area can be effectively reduced, and machining heat is reduced.