CN116329442A - High-temperature alloy large-sized special-shaped ring forging forming method - Google Patents

Abstract

The invention discloses a shaping method of a large-scale special-shaped ring forging of a high-temperature alloy, which is characterized in that a sawn high-temperature alloy bar is heated to 850 ℃ and is insulated, then heated to 985 ℃ and is insulated, and finally heated to 1160 ℃ and is insulated; upsetting and punching the heated and heat-preserved high-temperature alloy bar, and then pre-rolling, reaming and finish rolling to finally obtain the forging. The method can make the structure and the performance uniform and consistent, and is suitable for forging and forming the high-temperature alloy large-scale special-shaped ring.

Description

High-temperature alloy large-sized special-shaped ring forging forming method

Technical Field

The invention relates to a forging forming method, in particular to a high-temperature alloy large-scale special-shaped ring forging forming method.

Background

The material of the forging piece of the case of the aircraft engine is generally difficult to deform, the forging piece is large and high in height and is limited by the technological level and the equipment capacity, and the forging piece is generally produced by adopting a method of machining and welding after being rolled into a rectangular ring piece in a sectional manner. The defects of the above process method waste a large amount of materials, and when machining is increased, the integrity of the forging is destroyed, so that the performance of the product at the welding position is reduced.

The Chinese patent specification discloses a method for forming a special-shaped ring by hot bulging of a high-temperature alloy rectangular ring rolling piece, wherein the heated high-temperature alloy rectangular ring rolling piece is sleeved on the periphery of a preheated bulging block in a bulging machine, the bulging machine is started to enable the bulging block to radially squeeze the ring rolling piece from the inner circumferential surface of the ring rolling piece and deform the ring rolling piece to form a special-shaped ring blank, the first bulging is completed, and then the special-shaped ring blank rotates along a central axis. After the first rotation is completed, the special-shaped ring blank is subjected to second bulging and second rotation with the deformation amount of one according to the operation, the special-shaped ring is obtained after the third bulging and third rotation with the deformation amount of one and the fourth bulging with the deformation amount of one, and the method solves the problem of one-step forming of the large forging.

Disclosure of Invention

The invention aims to provide a method for forging a large-scale special-shaped ring of a high-temperature alloy, which solves the technical problems of raw material waste, increase in machining, damaged integrity of a forging, reduced comprehensive performance of the forging and the like in the prior art.

In order to solve the technical problems, the extrusion forming is realized by adopting the following technical scheme:

step one, heating the bar material

Heating the sawed high-temperature alloy bar to 850 ℃ and preserving heat, wherein the preserving heat time is the thickness of the bar, and then reheating to 985 ℃ and preserving heat, the preserving heat time is the thickness of the bar, and finally heating to 1160 ℃ and preserving heat, and the preserving heat time is the thickness of the bar multiplied by 4min/10mm;

step two, upsetting and punching

Upsetting and punching the heated and heat-preserved high-temperature alloy bar to obtain a ring blank A;

step three, reaming

Placing one end of a horse on a horse frame in a lifting manner, applying pressure on the ring blank by an upper anvil, and simultaneously rotating the ring blank by a manipulator to expand and deform the ring blank into a tapered special-shaped ring blank B;

step four, bulging

Placing a punch at the upper end of the special-shaped ring blank, and applying pressure to the punch by an upper anvil to press the punch into the special-shaped ring blank to obtain a special-shaped ring blank C;

step five, rolling

And placing the special-shaped ring blank on a ring rolling machine, wherein the rotating speed of a main roller die is 0.1-0.3 rad/s, and ring rolling is carried out on the special-shaped ring blank C by a core roller die at a certain feeding speed and pressure F3, so that the forge piece is finally obtained.

Compared with the prior art, the invention has the following beneficial effects:

according to the high-temperature alloy large-scale special-shaped ring forging forming method, the inclined beam and the punch are adopted for reaming, the process method is simple and practical, the ring blank is tapered through the inclined beam, the ring blank with a certain taper is reamed through the punch, and finally the integrally formed forging is obtained through rolling, so that the waste of raw materials and the machining process are reduced, and the integrity and the good comprehensive performance of the forging are maintained.

Detailed Description

The implementation of the method for forging the large-sized special-shaped ring of the high-temperature alloy needs to provide equipment such as a forging heating furnace, a press, a mechanical arm and the like. The method comprises the following specific embodiments:

step one, heating the bar material

Heating the sawed high-temperature alloy bar to 850 ℃ and preserving heat, wherein the preserving heat time is the thickness of the bar, and then reheating to 985 ℃ and preserving heat, the preserving heat time is the thickness of the bar, and finally heating to 1160 ℃ and preserving heat, and the preserving heat time is the thickness of the bar multiplied by 4min/10mm;

step two, upsetting and punching

Upsetting and punching the heated and heat-preserved high-temperature alloy bar to obtain a ring blank A;

step three, reaming

Placing one end of a horse on a horse frame in a lifting manner, applying pressure on the ring blank by an upper anvil, and simultaneously rotating the ring blank by a manipulator to expand and deform the ring blank into a tapered special-shaped ring blank B;

step four, bulging

Placing a punch at the upper end of the special-shaped ring blank, and applying pressure to the punch by an upper anvil to press the punch into the special-shaped ring blank to obtain a special-shaped ring blank C;

step five, rolling

And placing the special-shaped ring blank on a ring rolling machine, wherein the rotating speed of a main roller die is 0.1-0.3 rad/s, and ring rolling is carried out on the special-shaped ring blank C by a core roller die at a certain feeding speed and pressure F3, so that the forge piece is finally obtained.

Claims (1)

1. The method for forging the high-temperature alloy large-scale special-shaped ring is characterized by comprising the following steps of:

step one, heating the bar material

Heating the sawed high-temperature alloy bar to 850 ℃ and preserving heat, wherein the preserving heat time is the thickness of the bar, and then reheating to 985 ℃ and preserving heat, the preserving heat time is the thickness of the bar, and finally heating to 1160 ℃ and preserving heat, and the preserving heat time is the thickness of the bar multiplied by 4min/10mm;

step two, upsetting and punching

Upsetting and punching the heated and heat-preserved high-temperature alloy bar to obtain a ring blank A;

step three, reaming

Placing one end of a horse on a horse frame in a lifting manner, applying pressure on the ring blank by an upper anvil, and simultaneously rotating the ring blank by a manipulator to expand and deform the ring blank into a tapered special-shaped ring blank B;

step four, bulging

Placing a punch at the upper end of the special-shaped ring blank, and applying pressure to the punch by an upper anvil to press the punch into the special-shaped ring blank to obtain a special-shaped ring blank C;

step five, rolling

And placing the special-shaped ring blank on a ring rolling machine, wherein the rotating speed of a main roller die is 0.1-0.3 rad/s, and ring rolling is carried out on the special-shaped ring blank C by a core roller die at a certain feeding speed and pressure F3, so that the forge piece is finally obtained.