45results about How to "Shorten forging time" patented technology

The invention discloses a closed forging technique for a steering knuckle, belongs to automotive steering knuckle forging in the machining field, and overcomes the defects of need of procedures, such as trimming and the like, large metal consumption, low use ratio of a material and the like. The steering knuckle is forged on an electric straight direct drive spindle press by the closed forging technique; an extrusion blanking mould and a final forging mould both have a closed structure; a rod part of the steering knuckle is placed on an upper mould, and an ear part is placed on a lower mould; extrusion blanking and final forging forming can be tried; required blow energy is determined by actually debugging, a procedure of the blow energy is stored and used in the process of mass production; and in a series of technical schemes, the flashless forging of the steering knuckle is realized by three forging process steps, the procedures, such as preforging, trimming, revising and the like are saved, the use ratio of a forging material of the steering knuckle is increased, mould input is reduced, working efficiency is improved, and production cost is reduced.

The invention discloses a forging method of a single-throw crank shaft. The forging method of the single-throw crank shaft comprises the following steps: a step a of pouring a cylindrical blank material, wherein the cylindrical blank material comprises chemical components, by weight percent: 0.12-0.40% of C, 0.42-1.0% of Mn, 0.7-1.5% of Si, 0.09-0.15% of V, 0.15-0.22% of Ti, 0.4-1.4% of Cr, 0.6-1.5% of Ni, 0.18-0.30% of Mo, 0.4-0.8% of Li, 0.04-0.08% of Nb, 0.18-0.24% of Al, 0.18-0.45% of Mg, no greater than 0.033% of P, no greater than 0.030% of S and the balance of Fe; and a step b of forging, wherein the sep b comprises the following steps: at first, heating the selectively-used cylindrical blank material to an initial forging temperature by adopting an intermediate frequency heating furnace; next, rolling the heated blank material in a cross wedge rolling mill through a cross wedge rolling die into a rough blank and forming shaft rod parts of two ends; subsequently, putting the rolled rough blank in a bending die for bending; and finally, upsetting and extruding the bent rough blank in an upsetting forging concave die in two directions for shaping. With the adoption of a quenching and tempering heat treatment technology for the single-throw crank shaft provided by the invention, the high temperature normalizing and the forging are caused to organically form a continuous production line; and therefore, the defects of the prior art are overcome, the energy resource is saved, the heat treatment quality is improved, the production period is shortened, the production cost is lowered and the radiation pollution to a workshop environment is reduced.

The invention relates to the forging field, and aims to provide a forging method for a magnesium-alloy automobile hub. The forging method for the magnesium-alloy automobile hub comprises the following steps: step I, heating a magnesium alloy rod in a heating furnace; step II, pre-forging the magnesium alloy rod; step III, carrying out pre-profiling forging on disc-shaped blank; step IV, carrying out fine-profiling forging on a pre-profiled hub; step V, carrying out fine-shaping forging on a fine-profiled hub; step VI, transferring the fine-shaped hub to a transfer table for heating through a position transfer device, wherein a heating temperature is controlled to 320 DEG C to 450 DEG C; and step VII, carrying out rim extrusion sizing on the fine-shaped hub. The forging method for the magnesium-alloy automobile hub is relatively high in production efficiency; and the magnesium-alloy automobile hub is compact in texture, is uniform in component, and is relatively high in mechanical strength.

The invention relates to a no-riser and no-ingot tail forging method for a large-scale wind power main shaft; before heating and forging, a riser and a ingot tail of a steel ingot are cut off by a saw, then a jaw of pliers of a manipulator is used for clamping the steel ingot without the riser and the ingot tail, and then the processes of upsetting, drawing out, rolling circle, forging steps and upsetting flange are carried out; the jaw of the pliers of the manipulator includes pliers arms (2), sleeve seats (4) and ball-head cylinders (5); the number of the pliers arms (2), the sleeve seats (4) and the ball-head cylinders (5) is two, one piece is at the left and the other piece is at the right, one end of the left pliers arm (2) is articulated with one end of the right pliers arms (2) by a gemel (1), the other ends thereof are respectively provided with the left sleeve seat (4) and the right sleeve seat (4), the left ball-head cylinder and the right ball-head cylinder (5) are respectively pass through the left sleeve seat (4) and the right sleeve seat (4); the ball-head ends of the left ball-head cylinder and the right ball-head cylinder (5) are arranged at the inner sides of the left sleeve seat (4) and the right sleeve seat (4) in a left and right antithetic manner, and the other ends thereof are provided with a fixed pin (6) by inserting along the radial direction. The method of the invention can reduce forging processes, improve production efficiency, shorten forging time and enhance forging precision and forging quality.

The invention relates to a forging method for a six-throw crankshaft. The method comprises the following steps of: a), after upsetting a forge piece, drawing the forge piece to be flat and square, stamping the top and the bottom of the forge piece by using a triangular knife according to the number of the sections of the six-throw crankshaft needing to be forged, and stamping the forge piece into the same sections as the six-throw crankshaft; b), drawing the longer section of the six-throw crankshaft by using a short anvil according to the length of the six-throw crankshaft needing to be forged, and then integrally drawing the overall forge piece to a required size; c), twisting a corresponding section of the drawn forge piece to obtain a blank of the six-throw crankshaft needing to be forged; and d), performing precision-forging finishing on the blank of the six-throw crankshaft to obtain the six-throw crankshaft needing to be forged. The method is suitable for forging the six-throw crankshaft.

The invention relates to a shoulder core forging die for a 3T/5T swager and is mainly used for forging core forgings. The shoulder core forging die comprises a support (1), a core (2) and a jaw (4), wherein the core (2) is divided into two straight sections from the front to the rear along a length direction; the front straight-section core has a smaller diameter and is called a small diameter section (2.1); the rear straight-section core has a larger diameter and is called a large diameter section (2.2); the tail of the large diameter section (2.2) is an octagon (5); the core (2) is transversely shelved on the support (1); and the jaw (4) is arranged at the octagonal end of the core (2). During production, the front small diameter section core is used for performing primary expanding, and the rear large diameter section core is directly used for performing secondary expanding. Therefore, the forging time can be greatly shortened, and the energy consumption is also reduced.

The invention relates to the field of metallurgy forging, in particular to a method for forging by using a tilting gear and a manipulation trolley instead of a sleeve for turning steel ingot. The method comprises the following steps of: 1) arranging the tilting gear at the tail or the head of the steel ingot, and clamping the cap at the head of the steel ingot by using a manipulator of the manipulation trolley; and 2) hooking the tilting gear by using a main hook of a crown wheel and making the tilting gear and the manipulator of the manipulation trolley simultaneously turn the steel ingot. Compared with the prior art, the method has the advantages that: the operating process of the method is easily controlled, the clamping force on the steel ingot is large, the operation is simple and convenient, the forging time is saved, and the working efficiency is improved.

The invention relates to a crank throw forming forging process which comprises a forging machine, a manipulator, an anvil replacing die, a reverse buckling bending die, a core die, an upper anvil, a lower anvil, a workbench and a forged piece. Firstly, a prefabricated forge piece with a boss arranged in the middle is pressed to be thin and drawn out, then a male die, a trapezoidal die and a female die are arranged below the boss, a concave anvil replacing die and an arc anvil replacing die are arranged above the boss, multi-angle left-right moving and overturning forging is conducted on the boss, forging of a curved neck cylindrical blank is completed, then reverse forging bending is conducted through a reverse buckling bending die, and the curved neck cylindrical blank is formed. And two wings of the prefabricated forge piece are bent and folded together, then a series of core molds with different thickness differences at the two ends are used for pressing, meanwhile, the boss head is forged into the quadrangular crank throw head, and finally the crank throw forge piece is finished to the set size. The forging die has the advantages of being good in forming degree, small in machining allowance, short in forging time, small in material loss and low in production cost.

The invention discloses a forging method of a large medium-thickness cake-like forging. On the premise of guaranteeing product quality, the heating number of forging can be reduced, the loss in heat treatment of raw materials is saved, forging time is shortened, and production cost is lowered. According to the forging method, the forging is heated to expected temperature, indenting is performed, and an outer edge is rotatably and flatly pressed. The forging method is characterized in that the indenting is double-surface continuous indenting, that is, after one surface is indented, the forgingis immediately turned over by 180 degrees to indent the other surface; and finally, rotatable flat-pressing, outer circle rolling, flattening of the two indented surfaces and forming are performed.

The invention belongs to the technical field of shaft forge piece forging, and particularly relates to gearbox shaft forge piece machining equipment and a machining method thereof. The gearbox shaft forge piece machining equipment comprises a machining base, the machining base is provided with a thermal correction shaft forging piece lower die, an upper die fixing plate capable of doing reciprocating rectilinear motion in the vertical direction is arranged above the thermal correction shaft forging piece lower die, and a thermal correction shaft forging piece upper die is arranged at the bottom of the upper die fixing plate. Through the arrangement of a flash removal cutter, a cutter limiting plate and a rim charge blocking and communicating plate, the shaft forging piece is subjected to thermal correction, meanwhile, flash of the shaft forging piece is automatically cut off through the flash removal cutter, the forging time of the shaft forging piece is shortened, the mechanical performance of the shaft forging piece is improved, and the service life of the shaft forging piece is prolonged; and through moving the rim charge blocking and communicating plate, the flash on the edge blocking and communicating plate can enter a discharging groove, the flash is automatically discharged through the discharging groove, the flash does not need to be manually cleaned, operation is easy and convenient, and the automation degree and the production efficiency are high.

The invention provides 22Cr12NiWMoV forged round steel for a gas turbine and a preparation method thereof, and belongs to the technical field of metal material machining. The preparation method of the 22Cr12NiWMoV forged round steel for the gas turbine comprises the step of sequentially carrying out sectional heating, forging and post-forging heat treatment on a 22Cr12NiWMoV steel ingot to be treated so as to obtain the 22Cr12NiWMoV forged round steel for the gas turbine. According to the method, by adopting a pre-forging segmented heating mode and controlling forging parameters during forging, the prepared 22Cr12NiWMoV forged round steel for the gas turbine can have excellent room-temperature and high-temperature mechanical properties, meanwhile, crystal grains are fine, few non-metallic inclusions exist, and the preparation method is simple, easy to implement and low in cost.

The invention provides 316LN forged round steel for a nuclear power pipeline and a preparation method of the 316LN forged round steel, and belongs to the technical field of metal material machining. The preparation method of the 316LN forged round steel for the nuclear power pipeline comprises the following steps that a 316LN steel ingot to be treated is sequentially subjected to sectional type heating, forging and solution treatment, and the 316LN forged round steel for the nuclear power pipeline is obtained. According to the 316LN forged round steel for the nuclear power pipeline and the preparation method, by adopting a pre-forging segmented heating mode, controlling forging parameters during forging and finally adopting a solid solution strengthening mechanism, the prepared 316LN forged round steel for the nuclear power pipeline has excellent mechanical performance and corrosion resistance, meanwhile, grains are small, non-metallic inclusions are few, and the preparation method is simple, easy to implement and low in cost.