14results about How to "Small machining allowance" patented technology

The invention discloses a processing method of a high-density molybdenum alloy product. The processing method specifically comprises the following steps: step 1, selecting a molybdenum powder raw material; 2, the raw materials selected in the step 1 are mixed, and after mixing, ball materials are separated to obtain molybdenum pre-alloy powder; 3, the molybdenum pre-alloy powder obtained in the step 2 is loaded into a rubber sleeve to be machined, and a molybdenum alloy fine trimming blank is obtained; 4, the molybdenum alloy fine fettling blank is put into a mold to be sintered, and a molybdenum alloy sintered blank is obtained; and 5, the molybdenum alloy product obtained in the step 4 is subjected to polishing treatment, cleaning and drying, and then the molybdenum alloy product is obtained. According to the method, the problems of low density and low material utilization rate of an existing high-density molybdenum alloy product processing method are solved.

This utility model discloses a novel submersible motor upper seat structure for wells, including a motor upper seat with an oil chamber and a bearing chamber inside. A mechanical seal chamber is located above the bearing chamber for installing the mechanical seal. The oil chamber and the mechanical seal chamber are connected by a slot. Positioning holes are evenly distributed along the circumference of the side of the motor upper seat, with the positioning holes positioned higher than the highest point of the oil chamber, and the highest point of the mechanical seal chamber higher than the oil chamber. This utility model modifies the positional relationship between the oil chamber, the mechanical seal chamber, and the positioning holes, reducing quality risks in casting and machining, improving product quality and production efficiency; it increases oil saturation, completing oil injection in one step, significantly saving labor costs; the upper seat is made of hard-anodized aluminum alloy, which has low cutting resistance, is easy to machine, causes less tool wear, is less prone to corrosion, has minimal impact on the appearance of the electric pump, and has a cost similar to that of gray cast iron upper seats. Aluminum alloy is lightweight, reducing transportation and assembly costs, and has good thermal conductivity, which can lower the temperature of the motor during operation.

The application discloses a short-process low-cost Ti-55531 high-strength titanium alloy rod forging method and belongs to the technical field of titanium alloy material processing. The method comprises the following steps: material preparation, first high-temperature forging, second high-temperature forging, surface treatment, low-temperature upsetting and drawing and redrawing, continuous hexagonal drawing and rolling forming. The forging and rolling are regarded as necessary processes after each drawing by optimizing heating process parameters and deformation time sequence, combined with the cooperative process of reversing upsetting and drawing and rapid water quenching, the organization evolution is accurately controlled, the efficiency and uniformity are improved by adopting the multi-fire continuous deformation mode, and finally the processing loss is reduced by precise forming, so that the efficient and economic preparation of high-performance rods is realized.

The invention relates to a forming method for simultaneous special-shaped ring rolling of a main roller and a conical roller. The forming method comprises the following steps: blanking; heating before forging: heating to a forging temperature and keeping the temperature for a period of time; upsetting and punching to obtain a ring blank; pre-rolling at a first station; and carrying out second-station finish rolling. According to the forming method for simultaneous special-shaped ring rolling of the main roller and the conical roller, after a ring blank obtained through early upsetting and punching processes is heated and subjected to heat preservation before forging, a rectangular-section ring piece with the specified size is obtained through pre-rolling of a first station of the double-station special-shaped main roller and a first station of the double-station special-shaped conical roller; and then the double-station special-shaped main roller is lifted to a second station, the double-station special-shaped conical roller switches a follow-up point and moves to a preset position of the second station, and finally finish rolling forming of the complex special-shaped section ring forge piece with the end face and the outer diameter being provided with steps at the same time is completed, so that the purposes of reducing the machining allowance and reducing the cost and improving the efficiency of enterprises are achieved.

The application discloses a kind of aluminum matrix composite powder die forging preparation methods, specifically related to metal matrix composite preparation and forming processing field.The method includes: aluminum powder, alloying element powder and ceramic reinforcing particles are made into near-spherical composite particles with particle size 0.15mm~3mm by mechanical ball milling;Composite particles are loaded into mold cavity, heated to 250℃~650℃ in protective atmosphere and applied not less than 20MPa die forging pressure, directly formed into die forging;Finally, after deburring and size finishing, the part is obtained.Ceramic reinforcing particles volume fraction is 1%~35%, and aluminum powder and alloying element powder particle size is 10μm~50μm.The application organically combines ball milling mixing and die forming, realizes powder densification and part forming one-step completion, simplifies traditional multi-process process flow, significantly improves production efficiency and material utilization, reduces production cost, and is suitable for batch manufacturing of high-performance aluminum matrix composite parts.

The present application relates to the technical field of part processing, and discloses a forging forming method and tool for large thin-wall drum-shaped parts, comprising the following steps: step 1, designing a forging drawing according to the size of the part; step 2, designing a tire mold tool according to the forging drawing; the tire mold tool comprises a hollow forming tire mold, an upper pad mold and a punching tool; step 3, determining the process parameters of staged heating and the forging process parameters of each step; step 4, performing forging forming processing according to the steps, and obtaining a forging part. The present application can achieve high product processing quality, help to improve processing efficiency and reduce processing cost.

The invention discloses a forming method of a high-rib arc die forging, and belongs to the technical field of forging. The method comprises the steps that S1, a final forge piece is designed, specifically, ribs of a part are divided into 10 equal parts according to the height, four draft sections are divided from the rib top to the rib root according to the proportion of 1: 2: 3: 4, draft angles of 5-7 degrees, 7-10 degrees, 10-15 degrees and 15-20 degrees are sequentially set, transition fillets between the draft sections are R300-R800, meanwhile, bosses are arranged at the tops of the ribs, and the four corners of a rib plate are wrapped with cylinders; s2, die design is conducted, specifically, a second forming cavity for forming high ribs is formed in a lower die, and an air storage tank and a bridge part are arranged; s3, a rough blank is designed, the size of the rough blank is 1.1-1.2 times that of a final forging, and a positioning face is set; s4, finish forging forming is conducted, and variable-speed pressing is adopted; and S5, machining to obtain the part. According to the method, the rib part is sectionally provided with different draft angles, and optimized transition fillets are supplemented, so that the metal flow resistance is effectively reduced, complete filling of the high rib part is ensured, the defect of insufficient filling is avoided, meanwhile, the bottom deformation amount is increased, and a forge piece deformation dead zone is prevented from being formed.

This invention discloses a near-net-shape aluminum-based composite material part manufacturing method and part. The manufacturing method includes: establishing a three-dimensional part model of the part to be manufactured, wherein the part model has a built-in double-helix siphon microchannel; slicing the part model to obtain slice data for each layer, wherein the slice data includes the geometry and printing path of the part in that layer; printing the part model using sand mold printing according to the slice data to obtain a preform, wherein after printing each layer, a binder is sprayed onto the powder layer used for printing; the preform is sequentially sintered, post-treated, and pre-treated to obtain a treated preform; the treated preform is placed in a pre-fabrication container, impregnated with molten aluminum, and then slowly cooled and solidified to obtain the part to be manufactured. This invention solves the problems of high processing difficulty and difficulty in controlling the precision of aluminum-based composite material parts in the prior art.

The invention provides a preparation process of a ceramic grinding ball for grinding a battery raw material. The process comprises the following steps: forming a gel system by adopting non-toxic water-borne epoxy resin and water-dispersible polyamine, taking water as a solvent, preparing uniform slurry from ceramic powder, a dispersing agent and the like, performing vacuum defoaming, injecting the slurry into a silicon rubber spherical mold, performing gel curing under mild conditions, drying, and performing program control sintering, thereby finally obtaining the ceramic grinding ball. The ceramic powder is aluminum oxide, zirconium oxide toughened aluminum oxide or aluminum oxide toughened zirconium oxide ceramic powder. Near-net-size forming of the ceramic grinding ball is achieved, the sphericity degree of a green body is good, the surface is smooth and clean, and post-processing is greatly reduced. The process is non-toxic and environment-friendly, contact with metal equipment is avoided, and the metal impurity pollution risk of the product is remarkably reduced. The obtained ceramic grinding ball is high in density, the performance reaches the traditional compression molding level, and the ceramic grinding ball is particularly suitable for the field of high-purity battery material grinding and grinding of other materials sensitive to metal impurities.

The utility model discloses a die -casting die, including upper pressure mould, lower pressure mould, inlay, core -pulling, core rod, upper pressure mould includes pressure mould boss, lower pressure mould includes pressure mould recess, and the cavity is formed between pressure mould boss and pressure mould recess, and upper pressure mould is equipped with the inlay groove, and the inlay groove is communicated with the upper end surface of upper pressure mould and the cavity, and the inlay is inserted in the inlay groove, and the inlay includes the convex strip, and the convex strip forms a part of pressure mould boss, and the core -pulling is installed in the side of upper pressure mould and lower pressure mould, and the convex strip is equipped with the first through -hole, and the core -pulling is equipped with the second through -hole, and the core rod passes through the first through -hole and the second through -hole, the utility model discloses the core -pulling and core rod in the die -casting die design inside, and the core -pulling is positioned and inserted through the inlay, forms the pre -casting hole after alloy liquid fills, and the core -pulling is extracted after the casting forms, and the incidence of the inner hole defect is reduced.

The present application belongs to the technical field of titanium alloy forging, and relates to a die forging method of a special-shaped titanium alloy nozzle shell. In view of the problems of low material utilization, low processing efficiency and damaged metal streamline in the prior art, the present application proposes to integrate the pre-forging and finish-forging dies into an integrated multi-cavity die, thereby simplifying the forging process. The specific steps include designing and processing the die, preheating the die, heating the bar and forging the pre-forging piece, transferring the pre-forging piece to the finish-forging die to forge the formed piece, and then performing surface treatment, heat treatment and machining. The present application can improve the material utilization, save the production cost, ensure the stable product performance, simplify the process flow, reduce the labor intensity and cost of workers, and has a wide application prospect.

This invention discloses a multi-wire cutting production method for camera color filters, belonging to the field of color filter processing technology. This process achieves efficient color filter cutting through three core steps: precise compensation data testing, hexagonal single-sided contour cutting, and hexagonal cutting. The invention employs a hexagonal cutting layout, increasing material utilization by 5.5% while reducing machining allowance in the rounding process, thus improving production efficiency, all while maintaining the same output quantity. The application of translational worktable control compensation technology ensures the accuracy of the cutting path, solving the problems of low material utilization and excessive machining allowance in traditional cutting processes, making it suitable for the large-scale production of camera color filters.

The invention discloses a manufacturing method of a 6061T6 aluminum alloy rotating shaft die forging, and particularly relates to the technical field of aluminum alloy rotating shaft die forging manufacturing, which comprises the following steps: firstly heating a blank to a first temperature for heat preservation, then heating to a second temperature for heat preservation, and simultaneously heating a die for heat preservation; upsetting, drawing, squaring, chamfering, rolling and pre-forming the homogenized blank, monitoring the temperature of the blank in real time in the process, and carrying out remelting heat preservation control; and the blank obtained after blank making is transferred into a preheating die, closed die forging is conducted at the sectional strain rate under the isothermal condition, and the final forging temperature is controlled. Through cooperation of multiple processes, grain refinement and structure homogenization are achieved, the strength, plasticity and fatigue life of the forged piece are remarkably improved, meanwhile, the material utilization rate and the process stability are greatly improved, and the method is suitable for batch manufacturing of high-performance aluminum alloy rotating shafts in the fields of aerospace, automobiles and the like.

This invention discloses a method for machining deep and narrow grooves on an aluminum-magnesium casing. First, a pre-drilling process is performed within the waist-shaped groove using a drill bit of the same width as the groove. This removes most of the excess material, significantly reducing the subsequent milling allowance, improving machining efficiency, and facilitating chip removal during milling. This avoids chip breakage due to poor chip removal and dimensional deviations caused by tool sticking. Then, a variable-speed, half-circle, stepped layer milling method is used to machine to the designed dimensions. High feed rates are used on straight sections to greatly improve machining efficiency, while low feed rates are used on smooth transition sections to prevent tool breakage. The subsequent milling operation incorporates a small portion of the allowance from the previous milling of the sidewall, effectively finishing the first layer of sidewalls while significantly reducing the number of layer milling marks. Compared to existing layer milling methods, this method ensures the groove width, meets the groove wall roughness requirements, and greatly improves machining efficiency.