69results about How to "Reduce forging cost" patented technology

A superalloy made of a forging nickel-base superalloy such as Rene™ 88DT or ME3 is forged in a forging press having forging dies made of a die nickel-base superalloy. The forging is accomplished by heating to a forging temperature of from about 1700° F. to about 1850° F., and forging at that forging temperature and at a nominal strain rate. The die nickel-base superalloy is selected to have a creep strength of not less than a flow stress of the forging nickel-base superalloy at the forging temperature and strain rate.

The invention provides a cogging forging method. The cogging forging method includes the following steps of 1, forging heating, wherein a proper heating technology is formulated according to the heat conductivity of a material and changes of the specific heat capacity, and it is guaranteed that the center of a forging is completely forged so that the plasticity of the forging can be improved and the deformation resistance of the forging can be reduced; 2, blank cogging forging, wherein the upsetting process and the drawing-out process are specifically carried out so that the overall uniformity of the forging can be improved, and regions which are difficult to deform can be eliminated; 3, forging melting-down heating, wherein when the temperature of the forging is lower than 800 DEG C, forging is stopped, and the melting-down heating process is carried out; 4, molding, wherein a steel ingot is forged to be in a target forging shape; 5, post-forging heat treatment of the forging. According to the cogging forging method, the regions which are difficult to deform in the cogging process are eliminated, and the strain uniformity of the center of the forging is improved; due to a combined cogging tool, the upsetting process and the drawing-out process are rapidly switched, the heating number required during cogging forging is decreased, the forging cost is reduced, and the production efficiency is improved.

The invention discloses a method for processing a large combination type herringbone gear, which comprises the following steps of: forging; carrying out rough processing of the end surface, an incircle and an excircle on a processed workpiece by utilizing a lathe; drilling a hoisting hole; carrying out rough gear hobbing on the workpiece by utilizing a gear hobbing machine; carrying out tempering processing on a gear; semifinishing an inner hole, the end surface and an addendum circle by utilizing the lathe; drawing any pair of end surface gear central lines based on the end surface of one side of a reference groove, making a reference groove mark on an addendum and drawing a position line of each hole; drawing and drilling each hole by using a drilling machine; finishing and lathing the inner hole and both end surfaces of the lathe to a preset size; positioning based on a reference surface, carrying out correcting gear grinding on the addendum circle ; chambering, drilling and articulating each hole on a gear ring; and screwing a bolt and hinging the bolt and combining two gears into a pair. The invention has the advantages of material saving, cost reduction and mechanical performance improvement of products.

The invention relates to a preparation method of a TC4 titanium alloy plate material for 3C products. The preparation method comprises the following steps: cast ingot smelting, plate blank preparation, plate rolling, heat treatment, plate shape correction, surface treatment, discharging and machining. According to the preparation method of the TC4 titanium alloy plate material for 3C products, through the control over the components and the processing technology, both the microstructure and the mechanical property of the plate material are optimized, a fine, uniform and microscopic equiaxed structure is obtained, an medium and low range microhardness characteristic is achieved, and follow-up surface treatment processing steps such as polishing are facilitated; besides, with the adoption of the TC4 titanium alloy plate material prepared by adopting the preparation method, the 3C products are more uniform and beautiful in color and luster due to surface treatment, the problems such as nonuniform color and spot defects caused by surface treatment are avoided, the requirements of the 3C products and related accessories on the manufacturing cost and quality of shells are met, both the equipment and process are simple, and the stable and large-scale production is realized.

Dispersion strengthened aluminum base alloys are shaped into metal parts by high strain rate forging compacts or extruded billets composed thereof. The number of process steps required to produce the forged part are decreased and strength and toughness of the parts are increased. The dispersion strengthened alloy may have the formula Al_bal,Fe_a,Si_bX_c, wherein X is at least one element selected from Mn, V, Cr, Mo, W, Nb, and Ta, “a” ranges from 2.0 to 7.5 weight-%, “b” ranges from 0.5 to 3.0 weight-%, “c” ranges from 0.05 to 3.5 weight-%, and the balance is aluminum plus incidental impurities. Alternatively, the dispersion strengthened alloy may be described by the formula Al_bal,Fe_a,Si_bV_dX_c, wherein X is at least one element selected from Mn, Mo, W, Cr, Ta, Zr, Ce, Er, Sc, Nd, Yb, and Y, “a” ranges from 2.0 to 7.5 weight-%, “b” ranges from 0.5 to 3.0 weight-%, “d” ranges from 0.05 to 3.5 weight-%, “c” ranges from 0.02 to 1.50 weight-%, and the balance is aluminum plus incidental impurities. In both cases, the ratio [Fe+X]:Si in the dispersion strengthened alloys is within the range of from about 2:1 to about 5:1.

The invention discloses a forging method capable of improving structure uniformity of a titanium alloy forging stock. Differential thermal analyzing is used for measuring the phase transformation temperature beta t of a titanium alloy blank to be forged; under the temperature from (beta t+100) DEG C to (beta t+150) DEG C, heat preservation is carried out for 4 hours to 6 hours, and the blank to beforged is forged into a square blank; the obtained square blank is subject to heat preservation for 2 hours to 4 hours at the temperature from (beta t-20) DEG C to (beta t-10) DEG C, second-heating forging is carried out, the obtained square blank is subject to free drawing until the deformation amount reaches 50% to 60% of the total deformation amount, and the square blank obtained after free drawing is obtained; the obtained square blank obtained after free drawing rotates by 45 degrees around the center axis of the length direction of the square blank, pressing is carried out, and the final square blank is obtained; and the macrostructure of the cross section of the forge blank obtained after machining is uniform, the grain boundary is clear, no special-shaped piebald defects exist, the microstructure is uniform and consistent, the whole is of a net basket structure or equal-axis structure, and the edge and heart structures have no difference.

The invention discloses a hollow near-forming forging method of a large MW wind power main shaft. The method is characterized by comprising the following specific steps that 1, a steel ingot is heatedto 1200-1250 DEG C, heat preservation is carried out, then chamfering is carried out, water removing and upsetting are carried out, and blanking is carried out after the steel ingot is pulled out; 2,the steel ingot subjected to the first step is heated to 1200-1250 DEG C, heat preservation is carried out, then upsetting is carried out by adopting a special anti-extrusion leakage disc, then the hole is punched downwards to a certain height through a special punching core rod, and then the special punching core rod is used for drawing to a certain size; 3, the steel ingot subjected to the second step is heated to 1200-1250 DEG C, heat preservation is carried out, then upsetting is carried out by adopting a special anti-extrusion leakage disc, then the hole is punched downwards to a certainheight through a special punching core rod, and then a flange is printed out; and 4, the steel ingot subjected to the third step is heated to 1150-1250 DEG C, heat preservation is carried out, then locally upsetting the flange through the leakage disc, and finally the flange is formed and finished to obtain a finished product. According to the method, the problem that the small-head-end inner hole is very small in wind power main shaft production is solved, the waste of raw materials in the production process is greatly reduced, and the production cost is low.

The invention relates to the technical field of forging, in particular to a combined core-inlaid die. The combined core-inlaid die comprises a die sleeve and a die core. The die sleeve comprises an upper die sleeve body and a lower die sleeve body. The die core comprises an upper die core body and a lower die core body. An upper mounting groove is formed in the upper die sleeve body. The upper die core body is mounted in the upper mounting groove. A lower mounting groove is formed in the lower die sleeve body. The lower die core body is mounted in the lower mounting groove. An upper die cavity is formed in the upper die core body. A lower die cavity is formed in the lower die core body. A set of guide posts are arranged between the upper die sleeve body and the lower die sleeve body. According to the combined core-inlaid die, the material cost can be reduced, and the die manufacturing difficulty can be lowered; meanwhile, the strength of the die core can meet the forging requirements, and the quality of forged pieces is not affected. An application method of the combined core-inlaid die comprises the following steps: A, selecting the corresponding upper die core body and the corresponding lower die core body according to the size of a forged piece; B, mounting the upper die core body on the upper die sleeve body, and mounting the lower die core body on the lower die sleeve body; C, mounting the guide posts; and D, conducting forging. By means of the method, the same die sleeve is applicable to die cores of various different die cavity sizes, the manufacturing quantity of dies is reduced, and the forging cost is lowered.

A die forging technology for manufacturing black-surface pie-shaped workpiece without excessive edge includes such steps as making raw blank, loading it in a close die, punching on its surface to form a central recess, turning over the blank, and die forging.

The invention discloses a forging and stamping die of a brake cylinder seat, which comprises an upper die and a lower die, and a die cavity formed between the upper die and the lower die, wherein the upper die and the lower die are matched and positioned through a concave lock catch of the upper die and a convex lock catch of the lower die, a flash cavity is arranged on the edge of the die cavity between the upper die and the lower die, and a flash bridge part is arranged between the die cavity and the flash cavity. Furthermore, the distance from the upper die to the lower die at the flash bridge part is 1/3 of that from the upper die to the lower die at the flash cavity. During the forging, a metal blank is not easy to extrude out of the die cavity during the forging to ensure that the forged forging has stable quality; and the die has long service life and low forging cost.

The invention discloses a method for optimizing grain size and uniformity of a tantalum plate. The method comprises the following steps: 1, a tantalum cast ingot with a circular section shape is flattened by using a rapid forging machine in a room-temperature environment to obtain a tantalum blank with a rectangular section shape; 2, saw cutting is conducted, and a tantalum blank with the square cross section is obtained; 3, forging and rounding are conducted after heat preservation, and a bar blank with a circular cross section is obtained; 4, primary annealing treatment is performed to obtain an annealed bar billet; 5, the bar billet is extruded after heat preservation to obtain a plate blank with a rectangular section; 6, secondary annealing treatment is conducted, and an annealed plateblank is obtained; 7, rolling is performed to obtain a plate; and 8, third-time annealing treatment is conducted, and a finished tantalum plate is obtained. By the method, preparation of the medium-thickness tantalum plate with the thickness ranging from 5 mm to 20 mm can be achieved, the grain size is superior to 6.5 levels, the maximum grain size is less than or equal to 38 [mu]m, the grain size of the plate in the thickness direction is uniform, and the grain size level difference between a surface layer and the core portion is within 0.5 level.

The invention discloses a flange shaft forging method. The flange shaft forging method includes steps of (1) manufacturing a special composite die composed of an outer die, an inner die, a press block and a drain plate; (2) placing the inner die into the outer die and pressing to form a complete die; (3) placing a heated blank into an inner die cavity; (4) placing the pressing block on the blank and in the die cavity; (5) forging and pressing the press block into the die cavity so as to allow the blank to deform and fill with the die cavity; and (6) lifting the integral die to place on the drain plate, stamping the press block to enable the press block and the inner die to separate from the outer die, separating the press block and the inner die, and taking out the forged blank. Compared the prior art, the flange shaft forging method is easier in demoulding, reverse rotation dies are omitted, demounting way is changed, time and labor are saved, and speed and efficiency are high. The inner die is light in weight and easy to carry and cool. Further, multiple inner dies can be used by turns, the service live of the die is prolonged, and forging cost is reduced. The flange shaft forging method is convenient to operate, low in consumption and applicable to forging and forming of circular and special-shaped flange shafts.

The invention discloses a special machining method of a large module gear of a heavy anchor machine. The special machining method comprises the following steps that forging is conducted; rough machining of the end faces, the inner circle and the outer circle of a processed workpiece is conducted by using a lathe; a lifting hole is drilled; rough hobbing is conducted the workpiece by using a machining center; quenching and tempering is conducted on the gear; semi-finish machining of an inner hole, the end faces and crest circles is conducted by using the lathe; by making the end face of one side of a benchmark groove as a benchmark, the centerlines of any one pair of end face teeth are marked out, benchmark groove marks are made on crests, and the position line of each hole is marked out; each hole is drilled through a drilling machine; the inner hole and the two end faces are turned to preset sizes through the lathe in a finish machining mode; positioning is conducted according to a datum plane, and correction gear grinding is conducted on the crest circles; each hole in a gear ring is expanded, drilled and reamed. The special machining method has the advantages of saving materials, reducing cost and improving product mechanical properties.

The invention discloses a progressive loading precision forming die device and process method for a complex component of an ultra-long grid high-rib wallboard, and relates to the technical field of hot working. The progressive loading precision forming die device comprises an upper die and a lower die, and a punch is arranged on the upper die; and the lower die comprises an insert, a die core anda die holder, an installation groove is formed in the upper surface of the die holder, the die core is installed in the installation groove in a sliding mode, and the insert is installed on the uppersurface of the die core. According to the device and method, through horizontal sliding of the die core on the die holder, local progressive loading of a forging on a single-action press is realized,the die size is reduced, and the folding defect caused by overall loading is avoided.

The invention relates to a ceramic forging method, and belongs to the technical field of ceramic preparation. The ceramic forging method comprises the following step that oscillating pressure is applied on to-be-forged ceramic at the forging temperature for forging. According to the ceramic forging method, the deformation mechanism of a ceramic material at the high temperature is changed under the oscillating pressure, the deformation capacity and the deformation rate of the ceramic material are improved, generation of micro fatigue in the ceramic material and the material deformation process are greatly improved, then the ceramic material can reach the higher deformation rate and the larger deformation amount at the lower temperature and pressure, and therefore ceramic forging can be achieved, and the cost is greatly reduced. In addition, through the deformation process generated by oscillating pressure forging, improvement of the relative density and strengthening of the performance of the ceramic material can be achieved, and forging forming of ceramic components in certain shapes and sizes can be achieved.

The forming method of the thin web type forge piece is simple, the production period can be shortened, the forging cost can be reduced, and the forge piece quality can be improved. The forming method of the thin web type forge piece comprises the steps that blank manufacturing is conducted, specifically, a bar is drawn out according to the length of the forge piece, and a cylindrical rough blank is manufactured; pre-forging is conducted, specifically, a rough blank is laid in a pre-forging lower cavity, the side face of the rough blank is made to be matched with a positioning groove, the position of the rough blank is determined, then a pre-forging die upper die moves downwards, the pre-forging lower cavity and a pre-forging upper cavity are made to be matched to flatten the rough blank till a pre-forging cavity is filled with materials, and a plate-shaped pre-forged piece with a rib structure A initial blank on one side is obtained; and finish forging is conducted, specifically, the pre-forged piece is placed in a finish forging lower cavity, the initial blank of the rib structure A of the pre-forged piece is made to be matched with the forming groove of the rib structure A, the pre-forged piece is positioned, an upper die of a finish forging die moves downwards, the finish forging lower cavity and a finish forging upper cavity are made to be matched to flatten the pre-forged piece till the finish forging cavity is filled with materials, and therefore the forged piece is obtained.