120 results about "Tool steel" patented technology

The invention discloses a manufacturing method for a meat grinder blade. The manufacturing method comprises the following steps that S01, 440C cutter steel powder is selected; s02, an injection mold corresponding to the meat grinder blade is selected, the injection mold comprises a front mold body and a rear mold body, and the front mold body and the rear mold body are heated; s03, the 440C cutter steel powder is fed into an injection molding machine to form a blank; step S04, trimming the blank piece; s05, the blank is placed on the ceramic plate, the ejector pin face of the blank faces upwards, and the sprue face of the blank faces downwards; s06, the blank obtained after workpiece placing is completed is transferred into a vacuum degreasing furnace to be degreased; s07, the blank is transferred into a vacuum sintering furnace to be sintered; s08, the sintered blank is transferred to a flat grinding machine to be subjected to flat grinding; s09, the blank piece obtained after plane grinding is checked, and the blank piece which is checked to be qualified is subjected to magnetic polishing; the concentricity of the shaft hole of the meat grinder blade and the blade body can be improved, and the coaxiality of the assembled meat grinder blade is correspondingly improved.

The application provides a tool steel and a preparation method thereof. The tool steel comprises the following chemical components in percentage by mass: C: 0.50-0.59%, Si: 0.80-0.95%, Mn: 0.35-0.55%, Cr: 8.00-9.00%, W: 0.80-1.20%, Mo: 3.00-3.40%, V: 0.30-0.50%, Nb: 0.15-0.30%, Co: 0.18-0.38%, Ni: 0.15-0.35%, and the balance of Fe and impurities. The tool steel has excellent high strength, high toughness and red hardness through the design of alloy components, the increase of the content of Mo, the addition of Co and Ni elements, the design principle of multiple element combination, and the comprehensive consideration of the precipitation and growth mechanism of different element carbides in the solidification process.

The invention is directed to a method for improving the wear resistance of a vanadium alloyed powder metallurgy produced cold work tool steel comprising 1-20 %V, 1 – 5 %Mo and ≤ 1 %W by HIPing the steel and subjecting the HIPed steel to a heat treatment at a temperature of at least 5 °C higher than the solidus temperature of the tool steel for a time of at least 30 minutes in order to increase the size of the VC-particles, wherein the cold work tool steel after hardening and tempering does not contain noticeable amounts of other carbides than VC.

The utility model discloses a tool steel quenching anti-deformation positioning device, which relates to the technical field of high-speed tool steel production and comprises a positioning mechanism and a waste water collecting tank mounted at the bottom of the positioning mechanism, a quenching spraying mechanism is arranged on the outer side of the positioning mechanism, and a water storage tank is arranged at the top of the quenching spraying mechanism. The positioning mechanism comprises a fixed sliding frame, a chain wheel limiting cover is fixedly installed on one side of the fixed sliding frame, a clamping motor is fixedly installed on one side of the interior of the chain wheel limiting cover, the output end of the clamping motor is fixedly connected with a chain wheel transmission assembly, and clamping bidirectional threaded rods are symmetrically installed on the outer side of the chain wheel transmission assembly; the high-speed tool steel is clamped and fixed through the clamping plate, the quenching stability of the high-speed tool steel is improved, meanwhile, the rotating motor is started to drive the clamping rotating base to rotate, the clamping plate can drive the high-speed tool steel to rotate, and the high-speed tool steel can be evenly heated and quenched in a rotating mode.

The present disclosure belongs to the field of steel materials, and relates to a steel wire rod for producing alloy tools with high fatigue life and high impact resistance and an application thereof. Chemical compositions of the steel include, by weight percentage: [C] 0.83%-0.92%, [Si] 2.30%-2.60%, [Mn] 0.40%-0.80%, [Cr] 0.70%-1.05%, [Ni] 1.31%-1.61%, [V] 0.14%-0.30%, [Al] 0.025%-0.060%, [P]≤0.025%, [S]≤0.020%, with the rest being Fe and unavoidable impurities. The alloy tool steel wire rod obtained in the present disclosure is suitable for producing screwdriver bits, screwdrivers, hex wrenches, etc., requiring high fatigue life and high impact resistance, and has the following properties: hardness within a range of 60-62 HRC, fatigue life of not less than 30,000 cycles, and impact resistance of not less than 60 seconds.

The invention provides a low-hardness tool steel wire rod and a production technology thereof. The low-hardness tool steel wire rod is composed of, by mass, 0.56%-0.60% of C, 0.60%-0.90% of Mn, 0.17%-0.37% of Si, 0.70%-0.90% of Cr, 0.09%-0.13% of V, smaller than or equal to 0.025% of P, smaller than or equal to 0.025% of S, smaller than or equal to 0.25% of Ni, smaller than or equal to 0.30% of Cu, smaller than or equal to 0.030% of Al and the balance Fe and inevitable impurities. Small square billets of 160mm * 160mm are adopted for rolling, components are optimized, a reasonable controlled rolling and controlled cooling process is adopted, the phenomenon that a wire rod generates an abnormal structure is avoided, and the structure of the wire rod is pearlite and ferrite; and meanwhile, the low hardness of the wire rod is guaranteed, the hardness of the wire rod is smaller than or equal to 25 HRC, deep processing of the wire rod is facilitated, the requirements of users for hot forging and drawing machining can be met, and wide application prospects are achieved.

The present application relates to a kind of tool steel wire rod and its production process, wire rod chemical composition is according to mass percentage C:1.12%~1.23%, Si:0.15%~0.32%, Mn:0.15%~0.40%, P:0.0050%~0.013%, S:0.0040%~0.015%, N:0.0025%~0.0040%, W:0.0005%~0.0018%, Sb:0.0004%~0.0021%, the balance is Fe and inevitable impurities.For the tool steel wire rod of carbon content 1.2% or so, from chemical composition, smelting process and rolling process each aspect carries out system design, using continuous casting instead of traditional mould casting production process, the low multiple porosity and shrinkage hole grade of continuous casting billet are all not greater than 1.0 level, and high-efficiency production of super-high-carbon tool steel wire rod is realized.

The utility model discloses a high-speed tool steel cast ingot demoulding auxiliary device, which relates to the technical field of cast ingot demoulding and comprises a demoulding mechanism and a demoulding sliding plate mounted at the bottom of the demoulding mechanism, a mould closing mechanism is arranged at the top of the demoulding mechanism, and a top mould mounting support is arranged in the mould closing mechanism. The demolding mechanism comprises a workbench, a heat dissipation frame is fixedly installed on the top of the workbench, fixing blocks are fixedly installed on the two sides of the heat dissipation frame, fixing bolts are symmetrically connected to the interiors of the two fixing blocks in a threaded mode, and a bottom mold body is fixedly installed on the top of the heat dissipation frame. An air hole ejection sliding plate is slidably connected into the bottom die body, a certain airflow is generated through a demolding air pump, the airflow passes through the air hole ejection sliding plate to demold a cast ingot, meanwhile, when a demolding sliding cover moves to the bottom of a heat dissipation frame, heat of the bottom die body can be discharged from air holes in the two sides of the heat dissipation frame, and the heat dissipation efficiency is improved. Therefore, the heat dissipation effect of the bottom die body is improved.

The application relates to the technical field of wire rod production, in particular to a production method of high-efficiency and energy-saving alloy tool steel wire rod, and production steps of the method comprise the following steps: (1) cogging; (2) heating; (3) rolling: adopting a finishing rolling unit to roll, the temperature of an intermediate blank entering the finishing rolling unit is 900-910 DEG C, the temperature of the intermediate blank leaving the finishing rolling unit is 900-920 DEG C, so that the difference between the temperature of the intermediate blank leaving the finishing rolling unit and the temperature of the intermediate blank entering the finishing rolling unit is less than or equal to 20 DEG C; (4) cooling; (5) packing, the temperature of entering and leaving the finishing rolling unit is controlled by the cooling water pressure between the finishing rolling unit racks, high-strain-rate large deformation rolling in a non-recrystallization zone increases the dislocation and substructure density in supercooled austenite, and the produced deformation storage energy.

The utility model discloses a kind of testing device of through type metal detection door, comprising: test body fixed rod, telescopic cylindrical rod and rotating clamping point;Test body fixed rod is provided with slot;Slot is placed with test body;Test body fixed rod is fixedly connected with rotating clamping point;Telescopic cylindrical rod is fixedly connected with rotating clamping point;Test body fixed rod is rotatably connected with telescopic cylindrical rod by rotating clamping point.In the utility model, it solves the problem that traditional test body is difficult to pull out and insert when pulling out and inserting tool steel, realizes that test body is from 0.7 meters high or 1.5 meters height, and from different angles through metal detection door, improve test height accuracy and the test efficiency of metal detection door.

The utility model discloses a cooling device for alloy tool steel production, which belongs to the technical field of alloy tool steel and comprises a base, a shell, a transmission component, a cooling component and a telescopic component, the transmission component is positioned on the upper surface of the base, the cooling component is positioned on the upper surface of the shell, and the telescopic component is positioned on the upper surface of the inner wall of the shell. The cooling component comprises a booster pump, a first pipeline, a hollow plate, a second pipeline, a third pipeline, a pressing plate, a spring and a spray head, a water tank is arranged on the upper surface of the shell, the booster pump is located on the upper surface of the water tank, one end of the booster pump is connected with the water tank through a pipeline, and one end of the first pipeline is connected with the other end of the booster pump; and the other end of the first pipeline penetrates through and is connected with the upper surface of the shell, the hollow plate is located on the upper surface of the inner wall of the shell, and the problem that the cooling effect on alloy tool steel is reduced due to the fact that an existing spray head is exposed outside for a long time and blocked by external dust is solved.

The invention discloses cold work tool steel and a preparation method thereof. The cold work tool steel comprises the following elements in percentage by weight: 0.75 to 1.15 percent of C, 0.45 to 1.50 percent of Si, less than or equal to 1.50 percent of Mn, 4.50 to 7.00 percent of Cr, 3.00 to 6.00 percent of Mo, less than or equal to 3.00 percent of W, 0.50 to 2.50 percent of V and the balance of Fe and inevitable impurities. The preparation method comprises the steps that C, Si, Mn, Cr, Mo, W, V and Fe are added into a furnace to be smelted, and molten steel is obtained; deoxidizing, desulfurizing and deoxidizing the molten steel; carrying out vacuum degassing on the molten steel, pouring into a steel ingot, and annealing, forging and rolling the steel ingot to obtain a finished product; and quenching the rolled material at 1140-1170 DEG C, and tempering for three times at 540 DEG C after quenching, and tempering for one hour each time. The cold work tool steel has high hardness and high toughness, and is suitable for machining tools of materials difficult to machine.

The invention discloses a combined standard device for calibrating the longitudinal resolution of a terahertz measurement system, which comprises a square upper interface substrate and a cylindrical gap standard block, and is characterized in that the upper interface substrate is arranged above the gap standard block, and the size of the upper interface substrate is larger than that of the gap standard block; a circular groove with a certain depth is machined in the upper end face of the gap standard block, the depth specification of the circular groove corresponds to the longitudinal resolution of a terahertz measurement system, an upper measurement interface and a lower measurement interface are formed between the upper interface substrate and the circular groove, and terahertz waves reflected by the upper measurement interface and the lower measurement interface are measured through the terahertz measurement system. Whether the terahertz measurement system has the longitudinal resolution corresponding to the depth specification of the circular groove or not can be judged; the upper interface substrate is made of inorganic non-metal ceramic materials, and the gap standard block is made of inorganic non-metal ceramic materials or high-carbon high-chromium tool steel. According to the invention, the test and calibration requirements of the terahertz measurement system on the longitudinal resolution index can be met, and the accuracy and consistency of the measurement result are ensured.

The invention is directed to a wear resistant vanadium alloyed powder metallurgy produced cold work tool steel for knives consisting of in weight % (wt.%): 2.2 - 2.4 C; 0.1 - 0.55 Si; 0.2 - 0.8 Mn; 4.1 - 5.1 Cr; 3.1 - 4.5 Mo; 7.2 - 8.5 V optional components and impurities balance Fe, wherein the cold work tool steel after hardening does not contain more than 1 volume % of carbides larger than 1 pm other than vanadium carbides and wherein at least 25 % of the vanadium carbides have a size of 3 pm and / or wherein the vanadium carbides are near spherical and at least 55 of the number of the vanadium carbides has an aspect ratio ≤ 1.5. The invention is also directed to a method of producing said steel and the use of said steel.

The application belongs to the technical field of metal materials, and particularly relates to a high-life cutter steel and a carburizing method of a cutter. The chemical composition of the steel is as follows: C: 0.18%-0.22%, Si: 0.25%-0.30%, Mn: 0.50%-0.60%, P<=0.010%, S<=0.015%, Cr: 1.9%-2.0%, Ni: 1.80%-2.20%, Cu: 0.20%-0.50%, and the rest is Fe and inevitable impurities. The steel can effectively meet the performance requirements of fatigue resistance and high hardness of the cutter steel through component design and heat treatment methods, and a manufacturing method with significantly improved comprehensive mechanical properties and fatigue resistance is obtained. Through inhibition of carbide precipitation, optimization of carbon distribution and reduction of residual austenite, the surface hardness and fatigue performance are simultaneously improved.

The utility model discloses a tool steel strip blank pretreatment positioning device, and relates to the technical field of tool steel strips. The steel strip blank comprises a bottom plate, a positioning plate is arranged at the top of the bottom plate, and a steel strip blank body is arranged at the top of the positioning plate; an anti-deviation positioning assembly is arranged at the top of the positioning plate and comprises a first guide roller arranged on one side of the steel strip blank body. A first guide roller and a second guide roller in the anti-deviation positioning assembly are used for limiting a steel strip blank in multiple directions, and a driving wheel driven by a servo motor and a chain transmission system are matched, so that it is ensured that the position of the steel strip blank is accurate in the moving process, the deviation problem caused by manual feeding is avoided, the pretreatment effect is remarkably improved, and the production efficiency is improved. The rotating assembly drives the positioning plate to rotate, so that the steel strip blank can be turned over or the position can be adjusted, clamping of a shielding area is avoided, comprehensive pretreatment of the surface of the blank is achieved, manual repeated adjustment is not needed, and the treatment efficiency is greatly improved.

The present application relates to a kind of tool steel of excellent low temperature-resistant tool steel and its production method, and the chemical composition in steel is as follows by weight percentage: C 0.38%~0.70%, Si≤0.5%, Mn 0.4%~1.5%, Nb 0.01%~0.8%, Cr≤1.0%, Ni≤0.5%, 90≤C / N≤150, Ca 0.0005%~0.005%, wherein Si, Cr, Ni is not zero;Impurity element B≤0.0008%, P≤0.020%, S≤0.015%, the balance is Fe and inevitable impurities.The tool steel workpiece produced by the present application is above 50HRC in-20 ℃ hardness after heat treatment, the yield strength is above 500MPa, the impact energy is above 30J, the surface decarburization layer depth is not more than 10 μm, there is no intergranular oxidation, no microcrack, excellent wear resistance and impact toughness in low temperature environment, and the service life is obviously improved.

The present application belongs to the field of building engineering construction, and particularly relates to a device and method for hoisting and positioning a laminated slab. The device comprises a steel frame, a lifting ring, a fixture, a steel wire rope and a fixator, and the fixator further comprises a rotating buckle, a clasp, a wheel disc and a scale disc. The fixator is used to control the lifting and fixing of the steel wire rope, the steel frame serves as a main body balancing tool, and the steel frame is symmetrically provided with the fixator on one side and the lifting ring on the other side. The device for hoisting and positioning with the steel frame as the support has the advantages of simple structure, convenient installation, easy disassembly, wide adaptability, stability and reliability, and can effectively improve the hoisting angle and hoisting stability, and has the characteristics of fast construction speed and high safety.

The invention discloses a composite steel ingot and a production method thereof. The production method comprises the following steps: preparing high-alloy tool steel into alloy powder; the high-alloy tool steel comprises the following components in percentage by weight: 0.8%-1.1% of C, less than 1% of Si, less than 1% of Mn, 3.5%-4.3% of Cr, 4.5%-7% of Mo, 5%-7% of W, 2.0%-2.7% of V, 3.0%-5.0% of Co and the balance of Fe. The cylindrical soft steel container is filled with alloy powder, and after vacuum degassing, the cylindrical 42CrMo serves as a core material to be inserted into the center of the cylindrical soft steel container; and performing hot isostatic pressing treatment, and then performing annealing treatment. According to the invention, the hot isostatic pressing treatment is carried out on the to-be-treated material consisting of the high-alloy tool steel with specific components and the low-alloy material 42CrMo, so that the wear resistance and toughness of the composite steel ingot are realized, and the composite steel ingot with high cost performance and wear resistance is obtained.

The application belongs to the technical field of connection of metal materials, and discloses a diffusion welding method of beryllium copper and tool steel. ‑3 The application discloses a diffusion welding method of beryllium copper and tool steel, which comprises the following steps: (1) polishing and polishing the welding surface of the beryllium copper and the tool steel, and then cleaning; (2) assembling the beryllium copper and the tool steel in a package; (3) sending the assembled package into a vacuum degassing furnace, setting the temperature to 300-350 DEG C, and performing vacuumization on the package in the process, until the vacuum degree reaches 1*10 ‑3 Pa; (4) assembling the degassed package into a hot isostatic pressing device, and then performing hot isostatic pressing, using a protective gas as a pressure medium, setting the hot pressing temperature to 600-650 DEG C, setting the pressure to 100-130 Mpa, and setting the holding and pressure maintaining time to 2-4 h; (5) after the hot isostatic pressing is completed, furnace cooling is performed, then the package is cut open, and the beryllium copper-tool steel diffusion welding finished product is obtained. The beryllium copper-tool steel diffusion welding finished product prepared by the application has a high welding surface bonding rate and good tensile strength.

The utility model provides a centering guiding device for high-speed tool steel forging, which relates to the technical field of metallurgical machinery guiding, and comprises an external transmission component and a gear centering component, the gear centering component is arranged between the inner surfaces of the external transmission component, and the gear centering component is arranged between the inner surfaces of the external transmission component through cooperation of all parts of the gear centering component. When steel billets are centered and guided before steel forging, a motor drives a driving gear to rotate, then a driven gear drives an outer ring to rotate, the outer ring drives six centering claws to rotate, locking and clamping of the center steel billets are achieved, a displacement sensor is used for checking offset errors, and the centering claws capable of freely controlling clamping force are driven by the motor in a matched mode. The problems that a centering claw of a traditional device possibly has precision deviation under high-speed rotation and is poor in controllability are solved, the accident rate is greatly reduced, the practicability and functionality of the centering claw in daily use are both effectively considered, and compared with a traditional single mode, the centering claw is more suitable for actual requirements.

The purpose of the present invention is to provide a matrix high-speed tool steel having high softening resistance and a high fracture toughness value. In order to achieve the purpose, provided is a matrix high-speed tool steel comprising, in mass%, 0.45-0.60% C, 0.05-0.30% Si, 0.20-1.20% Mn, 0.01-1.00% Ni, 2.00-3.00% Cr, 0.003-0.100% Al, 0.80-1.30% V, 0.01-0.30% Nb, 2.00-4.00% Mo+0.5W, 0.003-0.040% N, and Fe and unavoidable impurities as the remainder. The unavoidable impurities have a P content of 0.050 mass% or less, an S content of 0.010 mass% or less, a Cu content of 0.30 mass% or less, and an O content of 0.050 mass% or less. The matrix high-speed tool steel has an areal primary-carbide proportion F of 0.40-0.70% and has a hardness after quenching and tempering of 55 HRC or greater.

The utility model discloses a tempering device for die steel processing heat treatment, which comprises a tempering box, a distance adjusting component is arranged in the tempering box, an upper mounting frame and a lower mounting frame are arranged in the tempering box through the distance adjusting component, and heating wires are fixedly arranged in the upper mounting frame and the lower mounting frame. And a movable placement assembly is arranged on the upper side wall of the tempering box. The distance adjusting assembly drives the upper mounting frame and the lower mounting frame to move, so that the upper mounting frame and the lower mounting frame drive the heating wire to move, when the upper mounting frame moves downwards, the lower mounting frame gets close to the die steel, and when the upper mounting frame moves upwards, the lower mounting frame gets away from the die steel, and therefore the position of the heating wire is adjusted according to the specification of the die steel; a proper distance is kept between the heating wire and the die steel, uneven heating of the die steel caused by too short distance is avoided, and slow rising of the surface temperature of the die steel caused by too long distance is avoided.

The invention relates to the field of powder injection molding materials, in particular to high-strength, high-toughness and high-wear-resistance tool steel and a molding process thereof, and the tool steel comprises the following components in percentage by mass: 1.0-1.6% of C, 0.1-0.6% of Si, less than 1.0% of Mn, less than 1.0% of P, less than 1.0% of S and the balance of Fe. The alloy comprises the following components in percentage by weight: 3.0%-8.0% of Cr, 0.5%-3.0% of Mo, 0.5%-2.0% of V and less than 1% of Zr; 1.0% to 4.0% of Nb; less than 5.0% of Co; ce / La: less than 0.1%; according to the tool steel material, the size of main carbides in the tool steel material is finally smaller than 2 micrometers through the injection molding technology, selection of appropriate alloy elements and content and the appropriate heat treatment technology, and therefore the material has better abrasion resistance and meanwhile has good toughness and high strength.

The invention provides casting powder for continuous casting of ultrahigh-carbon high-alloy tool steel and application of the casting powder, and relates to the technical field of casting powder, the casting powder comprises the following chemical components in percentage by mass: 21%-23% of CaO, 25%-28% of SiO2, 0%-2.0% of MgO, 2.0%-5.0% of Al2O3, 18.0%-22.0% of Na2O, 15.0%-21.0% of F <->, 0.2%-3.0% of Li2O, 0.7%-2.2% of B2O3, 2.5%-5.0% of C and 0.4%-1.5% of Fe2O3, the casting powder reaches relatively low alkalinity, and the casting powder has an ultralow melting point and low viscosity. And slag entrapment and slag runner phenomena are prevented during continuous casting. The technical problems that in the continuous casting process of ultrahigh-carbon high-alloy tool steel casting, due to the fact that alkalinity is high, many crystals are separated out, the heat conduction performance is poor, and the bonding breakout phenomenon is likely to happen are solved.

The invention provides a production process and application of a cold-rolled tool steel strip for a saw blade. Comprising the following steps that A1, a tool steel plate blank is heated and then continuously rolled, the coiling temperature is controlled to be 560-600 DEG C, and a hot-rolled wide plate coil is obtained; the method comprises the following steps: A1, carrying out hot rolling on a wide-width plate coil, A2, annealing the hot-rolled wide-width plate coil in a protective atmosphere, A3, carrying out acid pickling, rinsing and drying on the annealed steel coil, and then carrying out cold continuous rolling by adopting a multi-rack continuous rolling mill, A4, annealing the cold-rolled steel coil again in the protective atmosphere, and A5, cooling the annealed steel coil. The invention mainly aims to provide a production process and application of a 75Cr1 cold-rolled tool steel strip for a saw blade, and aims to solve the problems that in the prior art, in the whole-process production process of hot rolling, annealing and cold rolling, the size of cementite particles is difficult to effectively control, so that the structure of the steel strip is thick and large, and the service life of the steel strip is prolonged. And therefore, the technical problems of insufficient dissolution of carbides and low fatigue life during subsequent quenching heat treatment are solved.

The invention discloses a method for improving cracks of a 9SiCr casting blank, which comprises the following steps of: feeding a pure calcium line into molten steel to carry out calcium treatment on the molten steel, controlling the pure calcium line fed into the first furnace of molten steel to be 1.2-1.4 m / t, and controlling the pure calcium line fed into the second furnace of molten steel to be 0.7-0.9 m / t; the total aluminum content Alt in the steel is controlled to range from 0.020% to 0.035%; controlling the superheat degree of the molten steel to be 20-35 DEG C; the pulling speed of a 160mm * 160mm casting blank is controlled to be 1.75 m / min; the water flow of the crystallizer is controlled to be 1800 L / min; a secondary cooling water dynamic water distribution mode is weak cooling, and the water inlet temperature of secondary cooling water and crystallizer water is controlled to be 25-35 DEG C; special high-carbon high-alloy steel crystallizer casting powder is used; the casting blank with the surface temperature of 700-800 DEG C is off-line hoisted into a heat preservation pit for heat preservation, and the heat preservation pit is preheated to 200 DEG C or above in advance; according to the method, it can be guaranteed that the surface quality of the casting blank of the steel grade is stable, embrittlement does not occur in the cooling process of the casting blank, cracking does not occur in the rolling process, and the method has the advantages of being controllable, high in quality, efficient and low in cost and is suitable for large-scale industrial production of the high-carbon alloy tool steel 9SiCr.

The invention discloses a tool steel strip for a measuring tape and a preparation method thereof, belongs to the technical field of metallurgy, and realizes that high-carbon steel forms a uniform and fine sorbite structure in a hot rolling state by accurately controlling hot rolling deformation and a cooling system, so that the strength, the elastic limit and the fatigue life of a material are improved, meanwhile, good plasticity is kept, the technological process is simplified, and the production cost is reduced. The production cost is reduced.

The utility model relates to a kind of water distribution valves, including stepper motor, motor base and water distribution valve valve body, the water distribution valve valve body its appearance is round or polygonal, distribution valve spool is installed in the inner cavity of the water distribution valve valve body, and a sealing ring is set on the distribution valve spool, sealing effect is played with the water distribution valve valve body connection stepper motor end;N water outlet pipe interfaces are arranged on the outer wall of the water distribution valve valve body in circular layout, the utility model can realize multiple N-way cooling water, still can maintain due pressure, user realizes timely chip breaking when processing easy to entangle tool steel, aluminum material, copper material.

The utility model discloses a high-speed tool steel isothermal quenching tank stirring device which comprises a tank body and supporting legs fixedly mounted at the bottom of the tank body, cylinders are symmetrically and fixedly mounted on the outer side of the tank body, the telescopic ends of the cylinders are fixedly connected with an inner gear ring, the top of the inner gear ring is fixedly connected with a cylinder, and the top of the cylinder is fixedly connected with a top plate. A servo motor is fixedly mounted at the bottom of the top plate, a main gear is fixedly connected to the output end of the servo motor, a main stirring rod is fixedly connected to the bottom of the main gear, and the servo motor, the main gear, the main stirring rod, an annular disc, a vertical shaft, a driven gear, a side stirring rod, a reciprocating screw rod, an inner ring body and a vertical rod are arranged, so that the main stirring rod stirs the central position above quenching liquid; the side stirring rods stir the upper side edge position of quenching liquid, and the vertical rods stir the lower side of the quenching liquid, so that stirring treatment of the whole position in the quenching liquid is achieved, uniform mixing of the quenching liquid is kept, and the cooling effect and the quenching quality of high-speed steel are improved.