CN111644550A - Forging forming device matched with upper anvil for free forging and method for forging multistage step roller by using forging forming device - Google Patents
Forging forming device matched with upper anvil for free forging and method for forging multistage step roller by using forging forming device Download PDFInfo
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- CN111644550A CN111644550A CN202010547701.2A CN202010547701A CN111644550A CN 111644550 A CN111644550 A CN 111644550A CN 202010547701 A CN202010547701 A CN 202010547701A CN 111644550 A CN111644550 A CN 111644550A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/06—Hammers tups; Anvils; Anvil blocks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J9/00—Forging presses
- B21J9/10—Drives for forging presses
- B21J9/12—Drives for forging presses operated by hydraulic or liquid pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K29/00—Arrangements for heating or cooling during processing
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Abstract
A forging forming device matched with an upper anvil and used for free forging and a method for forging a multi-step roller by using the forging forming device belong to the technical field of forging forming. The invention aims to solve the problem of a forging forming device for reducing the operation difficulty of forging. The forging forming device comprises a wedge block, steel pipes are respectively welded on the left side end face and the right side end face of the wedge block, one end of a steel bar penetrates through a nut to be connected with the steel pipes, the other end of the steel bar is welded with a heavy object plate, the nuts are welded on the left side and the right side of an upper anvil, the number of the nuts is 6, the positions of the nuts are evenly distributed at 4 points on the side face of the upper anvil, the wedge block is in a right-angle step form, and the length of the inclined edge of the wedge block is the same as the. The invention develops a manufacturing method of a forging with a cone or a circular truncated cone in an integrally forged forging, so that the metal flow line of the forging is better, the primary qualified rate reaches more than 95%, and the forging allowance of the forging is reduced, thereby reducing the manufacturing cost and the operation difficulty. The invention is used for free forging.
Description
Technical Field
The invention belongs to the technical field of forging forming; in particular to a forging forming device used for free forging and matched with an upper anvil and a method for forging a multi-step roller by using the forging forming device.
Background
Free forging is a process of obtaining a forged part by plastically deforming a metal blank on an anvil or between upper and lower anvil blocks of a forging press using impact force or pressure. Compared with the casting product, the free forging not only can eliminate the defects of shrinkage cavity, looseness, air holes and the like which are possibly brought by the casting product, but also can refine crystal grains and improve the mechanical property of the product. The free forging is to control the shape and size of the forged piece by manual operation, so the precision of the forged piece is low, the machining allowance is large, the labor intensity is high, and the production rate is not high, therefore, the free forging is mainly applied to single-piece and small-batch production. In the field of free forging, only simple structural parts such as circles, squares (squares and flat squares), cones, cakes and the like can be forged. The forged piece on the engineering machinery with the cone or the circular truncated cone and the like can only be forged into a material and then is cold-processed into the forged piece with the cone or the circular truncated cone, so that raw materials are greatly wasted.
At present, the domestic production technical scheme for forging the forged piece with the cone or the circular truncated cone is to adopt steel ingots → heating, forging → normalizing, annealing and processing and forming. The forging with the cone or the circular truncated cone mainly has a forming mode: forging the cone or the round table into a cylinder. The forming method has the main problems of large forging allowance, long subsequent machining time and serious raw material waste.
Disclosure of Invention
The invention aims to provide a forging forming device matched with an upper anvil for free forging and a method for forging a multi-step roller by using the forging forming device.
The invention is realized by the following technical scheme:
the utility model provides a forge forming device that anvil was used in cooperation for freely forging, a forge forming device that anvil was used in cooperation for freely forging include the voussoir, the left and right sides terminal surface of voussoir weld respectively the steel pipe, the one end of steel bar is passed the nut and is connected with the steel pipe, the other end and the heavy object board welding of steel bar, the nut welds in the left and right sides of last anvil.
According to the forging forming device matched with the upper anvil and used for free forging, the number of the nuts is 6, the nuts are all arranged at 4 points of the side face of the upper anvil, the wedge block is in a right-angle step shape, and the length of the oblique edge of the wedge block is the same as the feeding length of a forging piece.
According to the forging forming device matched with the upper anvil and used for free forging, the clearance distance between the wedge block and the upper anvil is the total height stroke, the height of the wedge block and the maximum size of a material during deformation, and the total height stroke is the maximum diameter or the maximum height of press forging.
The invention relates to a method for forging a multi-step roller by a forging forming device matched with an upper anvil for free forging, which comprises the following steps: the technological process of forging the multi-step roller of the forging forming device matched with the upper anvil for free forging comprises steel ingot heating → pressing jaw → first upsetting → first long circular blank drawing → second upsetting → second long circular blank drawing → third long circular blank drawing → half die forging → heat treatment by the forging forming device matched with the upper anvil for free forging.
The invention relates to a method for forging a multistage step roller matched with a forging forming device for an upper anvil for free forging, which is characterized in that a forging method for the multistage step roller with a cone frustum adopts a 30MN hydraulic press for forging, the weight of a steel ingot is 10.3 tons, the method for forging the multistage step roller matched with the forging forming device for the upper anvil for free forging is characterized in that the steel ingot is put into a gas heating furnace for heating, the heating temperature is 1190-1210 ℃, the heat preservation time is 9-15 hours, and then a jaw is pressed on the steel ingot.
The invention relates to a method for forging a multistage step roller by matching with a forging forming device for an upper anvil, which is used for free forging, wherein a steel ingot at a press jaw is subjected to primary upsetting after being returned to a furnace and heated, the temperature of the returned furnace is 1190-1210 ℃, the heat preservation time is 3-6 h, the first upsetting is carried out by an upsetting platform, the upsetting is carried out to the diameter of 1105-1320 mm, and the upsetting ratio is 1.4-2.0. The steel ingot deforms through upsetting, the forging ratio is increased, positive and negative segregation existing in the steel ingot can be effectively destroyed, and meanwhile, the deformation of a core is increased.
The invention relates to a method for forging a multistage step roller of a forging forming device matched with an upper anvil for free forging, which comprises the steps of returning a steel ingot subjected to primary upsetting to a furnace, heating, then drawing an oblong blank for the first time, wherein the temperature of the returned furnace is 1190-1210 ℃, the heat preservation time is 3-5 h, adopting an upper flat anvil and a lower flat anvil as the first round blank drawing, drawing the steel ingot subjected to primary upsetting to 940mm in diameter, and pressing down 60-80 mm for the single time.
The invention relates to a method for forging a multistage step roller by matching with a forging forming device for an upper anvil, which is used for free forging, wherein a steel ingot after long circular blank drawing for the first time is subjected to secondary upsetting after being heated back in a furnace, the back-furnace heating temperature is 1190-1210 ℃, the heat preservation time is 3-4 h, the secondary upsetting is carried out until the diameter is 1105-1320 mm, and the upsetting ratio is 1.4-2.0.
The invention relates to a method for forging a multistage step roller of a forging forming device matched with an upper anvil for free forging, which is characterized in that an ingot subjected to secondary upsetting is returned to a furnace to be heated and then subjected to secondary drawing of an oblong blank, the temperature of the returned furnace is 1190-1210 ℃, the heat preservation time is 3-4 h, an upper flat anvil and a lower flat anvil are adopted as the secondary drawing of the oblong blank, and the upset ingot is drawn to a diameter mm 940. The single rolling reduction is 60-80 mm. The rolling reduction of the round blank drawn out for the second time is not too large, the purpose is to prevent cracks from occurring inside, internal air holes can be welded, the carbide is loosened and broken, the core material is increased, and the internal quality of the product is improved.
The invention relates to a method for forging a multistage step roller of a forging forming device matched with an upper anvil for free forging, which is characterized in that in the method for forging the multistage step roller matched with the forging forming device for the upper anvil for free forging, an steel ingot after long circular blank drawing for the second time is subjected to furnace returning heating, long circular blank drawing for the third time is carried out, the furnace returning heating temperature is 1190-1210 ℃, the heat preservation time is 1-2 h, an upper flat anvil and a lower flat anvil are adopted as a third round blank drawing, the diameter of the upset steel ingot is 740mm, and the single rolling reduction is 60-80 mm. The third round billet is drawn out and is pressed down the volume and should not too big, and the purpose is to prevent inside crackle, can weld inside gas pocket, loose, broken carbide simultaneously, increases the core and walks to expect to improve product internal quality.
The invention relates to a method for forging a multistage step roller of a forging forming device matched with an upper anvil for free forging, which is characterized in that a steel ingot after long circular blanks are drawn for the third time is subjected to furnace returning heating, then semi-die forging is performed by using the forging forming device matched with the upper anvil for free forging, the furnace returning heating temperature is 1190-1210 ℃, the heat preservation time is 1-2 hours, then the forging is synchronously operated to a finished product size at a specified point position through an operating machine and a forging piece, the single reduction amount is 60-80 mm, then the forging piece is air-cooled to 400-500 ℃, and is loaded into a heat treatment furnace for normalizing, the normalizing temperature is 950-970 ℃, and the heat preservation time is 12 hours. The forging forming device matched with the upper anvil for free forging is adopted for half die forging, so that the metal flow line of the forge piece is better, the primary qualified rate reaches more than 95%, and the forging allowance of the forge piece is reduced. The heat treatment can refine the grains. And the annealing of dehydrogenation and stress relief reduces the forging stress, reduces the hardness of the forged piece and is beneficial to subsequent processing.
The forging forming device matched with the upper anvil and used for free forging is convenient to disassemble and assemble.
According to the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, an operator and the forging forming device matched with the upper anvil for free forging need to be paid attention to during half die forging and forged to a cone, and compared with the original process, the process for example saves the raw material amount by at least 0.5 ton, improves the core quality, reduces the process weight of a forging blank, reduces the manufacturing cost and optimizes the forging forming process.
The invention relates to a method for forging a multi-step roller by a forging forming device matched with an upper anvil for free forging, which develops a manufacturing method for integrally forging a forging with a cone or a round table, so that the metal flow line of the forging is better, the primary qualified rate reaches more than 95%, and the forging allowance of the forging is reduced, thereby reducing the manufacturing cost, reducing the operation difficulty, improving the production efficiency, improving the production environment and realizing batch production.
Drawings
FIG. 1 is a front view of a forging apparatus for free forging with an upper anvil according to the present invention;
FIG. 2 is a left side view showing the structure of a forging forming apparatus for free forging in cooperation with an upper anvil according to the present invention;
FIG. 3 is a top plan view of a wedge and steel tube joint of a forging apparatus for free forging with an anvil according to the present invention;
FIG. 4 is a front view of the steel bar and weight plate connection of a forging apparatus for free forging incorporating an upper anvil of the present invention;
FIG. 5 is a schematic structural view of a multi-step roll manufactured according to the present invention;
FIG. 6 is a schematic structural view of a multi-step roll manufactured in a comparative example;
FIG. 7 is a photograph of a multi-step roll made in accordance with the present invention;
FIG. 8 is a schematic structural view of a threadless bolt of a forging apparatus for free forging in cooperation with an upper anvil according to the present invention;
fig. 9 is a schematic structural view of a pin head of a forging apparatus for free forging in cooperation with an upper anvil according to the present invention.
Detailed Description
The first embodiment is as follows:
the utility model provides a forge forming device that anvil was used in cooperation for freely forging, a forge forming device that anvil was used in cooperation for freely forging include voussoir 2, the left and right sides terminal surface of voussoir weld respectively and have steel pipe 3, the one end of rod iron 4 is passed nut 5 and is connected with the steel pipe, the other end and the heavy object board 6 welding of rod iron, the nut welds in the left and right sides of last anvil 1.
In the forging and forming device matched with the upper anvil for free forging, the number of nuts is 6, the positions of the nuts are all divided into 4 points on the side surface of the upper anvil, the wedge block is in a right-angle step shape, and the length of the oblique edge of the wedge block is the same as the feeding length of a forged piece.
In the forging and forming device for free forging matched with the upper anvil, the clearance distance between the wedge block and the upper anvil is the total height stroke, the height of the wedge block and the maximum size of the material during deformation, and the total height stroke is the maximum diameter or the maximum height of the press forging.
In the forging and forming device for free forging matched with the upper anvil, the type of the nut is M100, the interior of the nut is a smooth surface, threads in the interior of the nut are machined and removed by a lathe, and the inner hole of the nut is larger than the maximum side length of the M42 nut. The internal thread of the nut is removed, so that the friction force is reduced, and the service life of the steel bar is prolonged.
In the forging and forming device for free forging matched with the upper anvil, the steel bar and the steel pipe are fixedly connected in a detachable mode.
In the forging and forming device for free forging matched with the upper anvil, the steel bar is 40mm in diameter, and the lower end of the steel bar is welded with a nut M42 as shown in figure 4.
In the forging and forming device for free forging matched with the upper anvil, the nut of the M42 connected with the steel bar is a non-threaded nut and is used for being detachably and fixedly connected with the steel pipe.
In the forging and forming device for free forging matched with the upper anvil, the steel pipe has the dimensions of 60mm in outer diameter and 40mm in inner diameter, 3 steel pipes are welded to the left side and the right side of the wedge respectively, and each steel pipe is provided with a hole with the diameter of 25mm in the horizontal direction, as shown in figure 3.
In the forging forming device for free forging used in the present embodiment, a bolt of M42 is used to drill a hole with a diameter of 20mm at the end of the bolt 8, as shown in fig. 8, and then the bolt of M42 is passed through the nut of M42 connected to the steel bar and the hole of the steel pipe, and then the bolt is fixedly connected with the pin head.
In the forging and forming device matched with the upper anvil for free forging in the embodiment, the length of the pin head 9 is 100mm, the diameter of the pin head is 18mm, 2 holes with the diameter of 10mm are formed in the pin head, and as shown in fig. 9, a No. 8 line penetrates through the binding to prevent the pin head from penetrating out and enabling the joint of the steel pipe and the steel bar to fall off.
The forging and forming device matched with the upper anvil and used for free forging is convenient to disassemble and assemble.
The second embodiment is as follows:
according to the first embodiment, the method for forging the multi-step roller by the free forging and upper anvil matched forging forming device comprises the following steps: the technological process of forging the multi-step roller of the forging forming device matched with the upper anvil for free forging comprises steel ingot heating → pressing jaw → first upsetting → first long circular blank drawing → second upsetting → second long circular blank drawing → third long circular blank drawing → half die forging → heat treatment by the forging forming device matched with the upper anvil for free forging.
In the method for forging the multistage step roller for the forging forming device matched with the upper anvil for free forging, a 30MN hydraulic press is adopted for forging, the weight of a steel ingot is 10.3 tons, and the method for forging the multistage step roller for the forging forming device matched with the upper anvil for free forging is characterized in that the steel ingot is put into a gas heating furnace for heating at the temperature of 1190 ℃ for heat preservation time of 15 hours, and then a jaw is pressed on the steel ingot.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot at the pressing jaw is returned to the furnace and heated, then the steel ingot is subjected to first upsetting, the temperature of the returned furnace is 1190 ℃, the heat preservation time is 6 hours, the upsetting platform for first upsetting is used for upsetting, the steel ingot is subjected to upsetting until the diameter is 1105mm, and the upsetting ratio is 1.4.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to primary upsetting is returned to a furnace and heated, then an oblong blank is drawn for the first time, the temperature of the returned furnace is 1190 ℃, the heat preservation time is 5 hours, the upper flat anvil and the lower flat anvil are adopted as the first round drawn blank, the steel ingot subjected to primary upsetting is drawn to be 940mm in diameter, and the single rolling reduction is 60 mm.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the first time is heated back in a furnace and then is subjected to secondary upsetting, the back-furnace heating temperature is 1190 ℃, the heat preservation time is 3 hours, the secondary upsetting is carried out until the diameter is 1110mm, and the upsetting ratio is 1.4.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to secondary upsetting is returned to the furnace and heated, then the steel ingot is subjected to secondary drawing of the long round blank, the temperature of the returned furnace is 1190 ℃, the heat preservation time is 4 hours, the steel ingot subjected to secondary drawing of the long round blank adopts the upper flat anvil and the lower flat anvil, and the steel ingot subjected to upsetting is drawn to the round blank with the diameter of 940 mm. The single pressing amount is 60 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the second time is subjected to furnace returning heating, the furnace returning heating temperature is 1190 ℃, the heat preservation time is 2 hours, the upper flat anvil and the lower flat anvil are adopted for the third time drawn round blank, the diameter of the upset steel ingot is drawn to 740mm, and the single rolling reduction is 60 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, after the steel ingot subjected to third drawing of the long circular blank is subjected to furnace returning and heating, the steel ingot is subjected to semi-forging by the forging forming device matched with the upper anvil for free forging, the furnace returning and heating temperature is 1190 ℃, the heat preservation time is 2 hours, then the steel ingot is synchronously forged to the finished product size at the specified point position through the manipulator and the forge piece, the single reduction is 60mm, then the forge piece is air-cooled to 500 ℃, and is put into a heat treatment furnace for normalizing, the normalizing temperature is 950 ℃, and the heat preservation time is 12 hours.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, attention needs to be paid to the manipulator and the forging forming device matched with the upper anvil for free forging during half die forging to synchronously move and forge the roller to the cone, and compared with the original process, the process is taken as an example, the raw material quantity is saved by 0.5 ton at least, the core quality is improved, the process weight of a forging blank is reduced, the manufacturing cost is reduced, and the forging forming process is optimized.
The method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging in the embodiment develops a manufacturing method for integrally forging a forging with a cone or a circular truncated cone, so that the metal flow line of the forging is better, the primary qualified rate reaches more than 95%, the forging allowance of the forging is reduced, the manufacturing cost is reduced, the operation difficulty is reduced, the production efficiency is improved, the production environment is improved, and the batch production is realized.
The third concrete implementation mode:
according to the first embodiment, the method for forging the multi-step roller by the free forging and upper anvil matched forging forming device comprises the following steps: the technological process of forging the multi-step roller of the forging forming device matched with the upper anvil for free forging comprises steel ingot heating → pressing jaw → first upsetting → first long circular blank drawing → second upsetting → second long circular blank drawing → third long circular blank drawing → half die forging → heat treatment by the forging forming device matched with the upper anvil for free forging.
In the method for forging the multistage step roller of the forging forming device for the free forging matched with the upper anvil, the forging method for the multistage step roller with the cone frustum adopts a 30MN hydraulic press for forging, the weight of a steel ingot is 10.3 tons, and in the method for forging the multistage step roller of the forging forming device for the free forging matched with the upper anvil, the steel ingot is put into a gas heating furnace for heating, the heating temperature is 1210 ℃, the heat preservation time is 10 hours, and then a jaw is pressed on the steel ingot.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot at the pressure jaw is returned to the furnace and heated, then the first upsetting is carried out, the temperature of the returned furnace is 1210 ℃, the heat preservation time is 4 hours, the upsetting platform for the first upsetting is carried out, the upsetting is carried out until the diameter is 1180mm, and the upsetting ratio is 1.6.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to primary upsetting is returned to a furnace and heated, then an oblong blank is drawn for the first time, the temperature of the returned furnace is 1210 ℃, the heat preservation time is 3 hours, the upper flat anvil and the lower flat anvil are adopted as the first round drawn blank, the steel ingot subjected to primary upsetting is drawn to 940mm of diameter, and the single rolling reduction is 80 mm.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the first time is heated back in a furnace and then is subjected to secondary upsetting, the back-furnace heating temperature is 210 ℃, the heat preservation time is 3 hours, the secondary upsetting is carried out until the diameter is 1260mm, and the upsetting ratio is 1.8.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to secondary upsetting is returned to the furnace and heated, then the steel ingot is subjected to secondary drawing and long round blank, the temperature of the returned furnace is 1210 ℃, the heat preservation time is 4 hours, the steel ingot subjected to secondary drawing and long round blank adopts upper flat and lower flat anvils, and the steel ingot subjected to upsetting is drawn and round blank to the diameter of 940 mm. The single pressing amount is 80 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the second time is subjected to furnace returning heating, the furnace returning heating temperature is 1210 ℃, the heat preservation time is 1h, the steel ingot after upsetting is drawn to be 740mm in diameter by adopting the upper flat anvil and the lower flat anvil, and the single reduction is 60 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, after the steel ingot subjected to third drawing of the long circular blank is subjected to furnace returning and heating, the furnace returning and heating temperature is 1210 ℃, the heat preservation time is 1h, then the forging is synchronously operated to the finished product size at the specified point position through the manipulator and the forging, the single rolling reduction is 60mm, then the forging is air-cooled to 400 ℃, and is put into a heat treatment furnace for normalizing, the normalizing temperature is 970 ℃, and the heat preservation time is 12 h.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, attention needs to be paid to the manipulator and the forging forming device matched with the upper anvil for free forging during half die forging to synchronously move and forge the roller to the cone, and compared with the original process, the process is taken as an example, the raw material quantity is saved by 0.5 ton at least, the core quality is improved, the process weight of a forging blank is reduced, the manufacturing cost is reduced, and the forging forming process is optimized.
The method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging in the embodiment develops a manufacturing method for integrally forging a forging with a cone or a circular truncated cone, so that the metal flow line of the forging is better, the primary qualified rate reaches more than 95%, the forging allowance of the forging is reduced, the manufacturing cost is reduced, the operation difficulty is reduced, the production efficiency is improved, the production environment is improved, and the batch production is realized.
The fourth concrete implementation mode:
according to the first embodiment, the method for forging the multi-step roller by the free forging and upper anvil matched forging forming device comprises the following steps: the technological process of forging the multi-step roller of the forging forming device matched with the upper anvil for free forging comprises steel ingot heating → pressing jaw → first upsetting → first long circular blank drawing → second upsetting → second long circular blank drawing → third long circular blank drawing → half die forging → heat treatment by the forging forming device matched with the upper anvil for free forging.
In the method for forging the multistage step roller of the forging forming device for the free forging matched with the upper anvil, the forging method for the multistage step roller with the cone frustum adopts a 30MN hydraulic press for forging, the weight of a steel ingot is 10.3 tons, and in the method for forging the multistage step roller of the forging forming device for the free forging matched with the upper anvil, the steel ingot is put into a gas heating furnace for heating at 1200 ℃, the heat preservation time is 11 hours, and then the jaw pressing is carried out on the steel ingot.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot at the pressing jaw is returned to the furnace and heated, the temperature of the returned furnace is 1200 ℃, the heat preservation time is 5 hours, the upsetting platform for the first upsetting is used for upsetting, the steel ingot is upset to the diameter of 1220mm, and the upsetting ratio is 1.7.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to primary upsetting is returned to a furnace and heated, then an oblong blank is drawn for the first time, the temperature of the returned furnace is 1200 ℃, the heat preservation time is 3 hours, the upper flat anvil and the lower flat anvil are adopted as the first round drawn blank, the steel ingot subjected to primary upsetting is drawn to 940mm in diameter, and the single rolling reduction is 70 mm.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the first time is heated back in a furnace and then is subjected to secondary upsetting, the back-furnace heating temperature is 1200 ℃, the heat preservation time is 3 hours, the secondary upsetting is carried out until the diameter is 1260mm, and the upsetting ratio is 1.8.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to secondary upsetting is returned to the furnace and heated, then the steel ingot is subjected to secondary drawing of the long round blank, the temperature of the returned furnace is 1200 ℃, the heat preservation time is 3 hours, the upper flat anvil and the lower flat anvil are adopted as the second drawing of the round blank, and the steel ingot subjected to upsetting is drawn to the diameter of 940 mm. The single pressing amount is 70 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the second time is subjected to furnace returning heating, the furnace returning heating temperature is 1200 ℃, the heat preservation time is 1h, the steel ingot after upsetting is drawn to be 740mm in diameter by adopting the upper flat anvil and the lower flat anvil, and the single reduction is 60 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, after the steel ingot subjected to third drawing of the long circular blank is subjected to furnace returning and heating, the steel ingot is subjected to semi-forging by the forging forming device matched with the upper anvil for free forging, the furnace returning and heating temperature is 1200 ℃, the heat preservation time is 1h, then the forging is synchronously operated at the specified point position through the manipulator and the forging to the finished product size, the single rolling reduction is 60mm, then the forging is subjected to air cooling to 500 ℃, and is put into a heat treatment furnace for normalizing, the normalizing temperature is 960 ℃, and the heat preservation time is 12 h.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, attention needs to be paid to the manipulator and the forging forming device matched with the upper anvil for free forging during half die forging to synchronously move and forge the roller to the cone, and compared with the original process, the process is taken as an example, the raw material quantity is saved by 0.5 ton at least, the core quality is improved, the process weight of a forging blank is reduced, the manufacturing cost is reduced, and the forging forming process is optimized.
The method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging in the embodiment develops a manufacturing method for integrally forging a forging with a cone or a circular truncated cone, so that the metal flow line of the forging is better, the primary qualified rate reaches more than 95%, the forging allowance of the forging is reduced, the manufacturing cost is reduced, the operation difficulty is reduced, the production efficiency is improved, the production environment is improved, and the batch production is realized.
The fifth concrete implementation mode:
according to the first embodiment, the method for forging the multi-step roller by the free forging and upper anvil matched forging forming device comprises the following steps: the technological process of forging the multi-step roller of the forging forming device matched with the upper anvil for free forging comprises steel ingot heating → pressing jaw → first upsetting → first long circular blank drawing → second upsetting → second long circular blank drawing → third long circular blank drawing → half die forging → heat treatment by the forging forming device matched with the upper anvil for free forging.
In the method for forging the multistage step roller of the forging forming device for the free forging matched with the upper anvil, the forging method for the multistage step roller with the cone frustum adopts a 30MN hydraulic press for forging, the weight of a steel ingot is 10.3 tons, and in the method for forging the multistage step roller of the forging forming device for the free forging matched with the upper anvil, the steel ingot is put into a gas heating furnace for heating, the heating temperature is 1210 ℃, the heat preservation time is 9 hours, and then a jaw is pressed on the steel ingot.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot at the pressure jaw is returned to the furnace and heated, then the first upsetting is carried out, the temperature of the returned furnace is 1210 ℃, the heat preservation time is 3 hours, the upsetting platform for the first upsetting is carried out, the upsetting is carried out until the diameter is 1145mm, and the upsetting ratio is 1.44.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to primary upsetting is returned to a furnace and heated, then an oblong blank is drawn for the first time, the temperature of the returned furnace is 1210 ℃, the heat preservation time is 3 hours, the upper flat anvil and the lower flat anvil are adopted as the first round drawn blank, the steel ingot subjected to primary upsetting is drawn to 940mm of diameter, and the single rolling reduction is 80 mm.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the first time is heated back in a furnace and then is subjected to secondary upsetting, the back-furnace heating temperature is 1210 ℃, the heat preservation time is 3 hours, the secondary upsetting is carried out until the diameter is 1145mm, and the upsetting ratio is 1.44.
In the method for forging the multi-step roller of the forging forming device matched with the upper anvil for free forging, the steel ingot subjected to secondary upsetting is returned to the furnace and heated, then the steel ingot is subjected to secondary drawing of the long round blank, the temperature of the returned furnace is 1210 ℃, the heat preservation time is 3 hours, the steel ingot subjected to secondary drawing of the long round blank adopts upper flat anvils and lower flat anvils, and the steel ingot subjected to upsetting is drawn to the round blank with the diameter of 940 mm. The single pressing amount is 60 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the second time is subjected to furnace returning heating, the furnace returning heating temperature is 1210 ℃, the heat preservation time is 1h, the steel ingot after upsetting is drawn to be 740mm in diameter by adopting the upper flat anvil and the lower flat anvil, and the single reduction is 60 mm.
In the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, after the steel ingot subjected to third drawing of the long circular blank is subjected to furnace returning and heating, the furnace returning and heating temperature is 1210 ℃, the heat preservation time is 1h, then the forging is synchronously operated to the finished product size at the specified point position through the manipulator and the forging, the single rolling reduction is 60mm, then the forging is subjected to air cooling to 450 ℃, and is loaded into the heat treatment furnace for normalizing, the normalizing temperature is 960 ℃, and the heat preservation time is 12 h.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, attention needs to be paid to the manipulator and the forging forming device matched with the upper anvil for free forging during half die forging to synchronously move and forge the roller to the cone, and compared with the original process, the process is taken as an example, the raw material quantity is saved by 0.5 ton at least, the core quality is improved, the process weight of a forging blank is reduced, the manufacturing cost is reduced, and the forging forming process is optimized.
The method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging in the embodiment develops a manufacturing method for integrally forging a forging with a cone or a circular truncated cone, so that the metal flow line of the forging is better, the primary qualified rate reaches more than 95%, the forging allowance of the forging is reduced, the manufacturing cost is reduced, the operation difficulty is reduced, the production efficiency is improved, the production environment is improved, and the batch production is realized.
The sixth specific implementation mode:
the utility model provides a forge forming device that anvil was used in cooperation for freely forging, a forge forming device that anvil was used in cooperation for freely forging include the voussoir, the left and right sides terminal surface of voussoir weld respectively the steel pipe, the one end of steel bar is passed the nut and is connected with the steel pipe, the other end and the heavy object board welding of steel bar, the nut welds in the left and right sides of last anvil.
The seventh embodiment:
according to a sixth specific embodiment, the forging forming device matched with the upper anvil for free forging is characterized in that the number of the nuts is 6, the positions of the nuts are all divided into 4 points on the side surface of the upper anvil, the wedge block is in a right-angle step shape, the length of the inclined edge of the wedge block is equal to the length of the feeding amount of a forged piece, the gap distance between the wedge block and the upper anvil is the total height stroke-the height of the wedge block-the maximum size of the material during deformation, and the total height stroke is the maximum diameter or the maximum height of the press forging.
The specific implementation mode is eight:
according to a sixth embodiment, the method for forging the multi-step roller by the free forging and upper anvil matching forging forming device comprises the following steps: the technological process of forging the multi-step roller of the forging forming device matched with the upper anvil for free forging comprises steel ingot heating → pressing jaw → first upsetting → first long circular blank drawing → second upsetting → second long circular blank drawing → third long circular blank drawing → half die forging → heat treatment by the forging forming device matched with the upper anvil for free forging.
In the method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging, attention needs to be paid to the manipulator and the forging forming device matched with the upper anvil for free forging during half die forging to synchronously move and forge the roller to the cone, and compared with the original process, the process is taken as an example, the raw material quantity is saved by 0.5 ton at least, the core quality is improved, the process weight of a forging blank is reduced, the manufacturing cost is reduced, and the forging forming process is optimized.
The method for forging the multi-step roller by the forging forming device matched with the upper anvil for free forging in the embodiment develops a manufacturing method for integrally forging a forging with a cone or a circular truncated cone, so that the metal flow line of the forging is better, the primary qualified rate reaches more than 95%, the forging allowance of the forging is reduced, the manufacturing cost is reduced, the operation difficulty is reduced, the production efficiency is improved, the production environment is improved, and the batch production is realized.
The specific implementation method nine:
according to the eighth embodiment, the forging method of the multistage step roller with the cone frustum and matched with the forging forming device for the upper anvil is characterized in that a 30MN hydraulic press is adopted for forging, the weight of a steel ingot is 10.3 tons, the steel ingot is placed into a gas heating furnace for heating at the temperature of 1190-1210 ℃ for 9-15 hours, and then the steel ingot is subjected to jaw pressing.
The detailed implementation mode is ten:
according to the eighth embodiment, in the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot at the press jaw is returned to the furnace and heated, then the steel ingot is subjected to primary upsetting, the temperature of the returned furnace is 1190-1210 ℃, the heat preservation time is 3-6 h, the first upsetting platform is used for upsetting, the upsetting is carried out until the diameter is 1105-1320 mm, and the upsetting ratio is 1.4-2.0.
The concrete implementation mode eleven:
according to the eighth embodiment, in the method for forging the multistage step roller matched with the forging forming device for the upper anvil for free forging, the steel ingot subjected to primary upsetting is returned to the furnace and heated, then the steel ingot is subjected to primary drawing of the long round blank, the furnace returning heating temperature is 1190-1210 ℃, the heat preservation time is 3-5 h, the upper flat anvil and the lower flat anvil are adopted as the first round drawing blank, the steel ingot subjected to primary upsetting is drawn into the long round blank with the diameter of 940mm, and the single reduction is 60-80 mm.
The specific implementation mode twelve:
according to the eighth embodiment, in the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long circular blank is drawn for the first time is returned to the furnace for heating and then is subjected to secondary upsetting, the temperature of the returned furnace is 1190-1210 ℃, the heat preservation time is 3-4 h, the steel ingot is subjected to secondary upsetting to the diameter of 1105-1320 mm, and the upsetting ratio is 1.4-2.0.
The specific implementation mode is thirteen:
according to the eighth embodiment, in the method for forging the multistage step roller matched with the forging forming device for the upper anvil for free forging, the steel ingot subjected to secondary upsetting is returned to the furnace and heated, then the long round blank is drawn for the second time, the furnace returning heating temperature is 1190-1210 ℃, the heat preservation time is 3-4 hours, the upper flat anvil and the lower flat anvil are adopted as the second round blank drawing, and the diameter of the steel ingot subjected to upsetting is 940 mm. The single rolling reduction is 60-80 mm.
The specific implementation mode is fourteen:
according to the eighth embodiment, in the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, the steel ingot after the long round blank is drawn for the second time is returned to the furnace and heated, the temperature of the returned furnace is 1190-1210 ℃, the heat preservation time is 1-2 hours, the steel ingot after the long round blank is drawn for the third time is a flat anvil and a flat anvil, the steel ingot after upsetting is drawn to be 740mm in diameter, and the single reduction is 60-80 mm.
The concrete implementation mode is fifteen:
according to the eighth embodiment, in the method for forging the multistage step roller by the forging forming device matched with the upper anvil for free forging, after the steel ingot subjected to third drawing of the long circular blank is subjected to furnace returning and heating, semi-forging is performed by the forging forming device matched with the upper anvil for free forging, the furnace returning and heating temperature is 1190-1210 ℃, the heat preservation time is 1-2 hours, then the forging is synchronously operated at the specified point position through the manipulator and the forging to the finished product size, the single rolling reduction is 60-80 mm, then the forging is air-cooled to 400-500 ℃, and is loaded into the heat treatment furnace for normalizing, the normalizing temperature is 950-970 ℃, and the heat preservation time is 12 hours.
Claims (10)
1. A forging forming device for freely forging matched upper anvil is characterized in that: a forge forming device that anvil was used in cooperation for freely forging include voussoir (2), the left and right sides terminal surface of voussoir (2) weld respectively steel pipe (3), the one end of rod iron (4) is passed nut (5) and is connected with steel pipe (3), the other end and heavy object board (6) welding of rod iron (4), nut (5) weld in the left and right sides of last anvil (1).
2. The forging-forming apparatus for free forging using an anvil as set forth in claim 1, wherein: the number of the nuts (5) is 6, the positions of the nuts are all divided into 4 points on the side surface of the upper anvil (1), the wedge block (2) is in a right-angle step shape, and the length of the oblique edge of the wedge block (2) is the same as the feeding length of the forge piece.
3. A method of forging a multistage stepped roll using the forging apparatus for free forging with an upper anvil according to claim 1, comprising the steps of: the technological process of forging the multi-step roller of the forging forming device matched with the upper anvil for free forging comprises steel ingot heating → pressing jaw → first upsetting → first long circular blank drawing → second upsetting → second long circular blank drawing → third long circular blank drawing → half die forging → heat treatment by the forging forming device matched with the upper anvil for free forging.
4. The method for forging a multistage stepped roll of a forging forming apparatus for a free forging in cooperation with an upper anvil according to claim 3, wherein: the forging method of the multistage step roller with the cone frustum adopts a 30MN hydraulic press for forging, the weight of a steel ingot is 10.3 tons, the method for forging the multistage step roller by matching with a forging forming device for an upper anvil is used for free forging, the steel ingot is put into a gas heating furnace for heating, the heating temperature is 1190-1210 ℃, the heat preservation time is 9-15 hours, and then a jaw is pressed on the steel ingot.
5. The method of forging a multistage stepped roll for a free-forging anvil-fitted forging forming device according to claim 3 or 4, wherein: in the method for forging the multi-step roller by matching with the forging forming device for the upper anvil, the steel ingot of the pressure jaw is returned to the furnace for heating and then subjected to primary upsetting, the temperature for returning to the furnace is 1190-1210 ℃, the heat preservation time is 3-6 hours, the primary upsetting is carried out by an upsetting platform, the upsetting is carried out until the diameter is 1105-1320 mm, and the upsetting ratio is 1.4-2.0.
6. The method of forging a multistage stepped roll for a free-forging anvil-fitted forging forming device according to claim 3 or 4, wherein: in the method for forging the multi-step roller by matching with the forging forming device for the upper anvil, the steel ingot subjected to primary upsetting is returned to the furnace to be heated, and then long round blanks are drawn for the first time, the temperature for returning to the furnace is 1190-1210 ℃, the heat preservation time is 3-5 hours, the upper flat anvil and the lower flat anvil are adopted as the first round blank drawn, the steel ingot subjected to primary upsetting is drawn to be 940mm in diameter, and the single reduction is 60-80 mm.
7. The method of forging a multistage stepped roll for a free-forging anvil-fitted forging forming device according to claim 3 or 4, wherein: in the method for forging the multi-step roller by matching with the forging forming device for the upper anvil, the steel ingot after the long circular blank is drawn for the first time is returned to the furnace for heating and then is subjected to secondary upsetting, the temperature for returning to the furnace is 1190-1210 ℃, the heat preservation time is 3-4 h, the secondary upsetting is carried out until the diameter is 1105-1320 mm, and the upsetting ratio is 1.4-2.0.
8. The method of forging a multistage stepped roll for a free-forging anvil-fitted forging forming device according to claim 3 or 4, wherein: in the method for forging the multi-step roller by matching with the forging forming device for the upper anvil, the steel ingot subjected to secondary upsetting is returned to the furnace and heated, then long round blank drawing is carried out for the second time, the temperature for returning to the furnace is 1190-1210 ℃, the heat preservation time is 3-4 h, the round blank drawing for the second time adopts the upper flat anvil and the lower flat anvil, and the steel ingot subjected to upsetting is drawn to the round blank drawing diameter of 940 mm. The single rolling reduction is 60-80 mm.
9. The method of forging a multistage stepped roll for a free-forging anvil-fitted forging forming device according to claim 3 or 4, wherein: in the method for forging the multi-stage step roller by matching with the forging forming device for the upper anvil, the steel ingot after the long round blank is drawn for the second time is returned to the furnace for heating, the long round blank is drawn for the third time, the furnace returning heating temperature is 1190-1210 ℃, the heat preservation time is 1-2 h, the steel ingot after upsetting is drawn to the diameter of 740mm by adopting the upper flat anvil and the lower flat anvil, and the single reduction is 60-80 mm.
10. The method of forging a multistage stepped roll for a free-forging anvil-fitted forging forming device according to claim 3 or 4, wherein: according to the method for forging the multi-step roller by the aid of the forging forming device matched with the upper anvil for free forging, after the steel ingot with the long round blank drawn for the third time is heated in a furnace returning mode, the forging forming device matched with the upper anvil for free forging is used for half die forging, the furnace returning heating temperature is 1190-1210 ℃, the heat preservation time is 1-2 hours, then the forging is synchronously operated at the specified point position through an operating machine and the forging to be forged to the finished product size, the single pressing amount is 60-80 mm, then the forging is air-cooled to 400-500 ℃, the forging is loaded into a heat treatment furnace for normalizing, the normalizing temperature is 950-970 ℃, and the heat preservation time is 12 hours.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61193701A (en) * | 1985-02-25 | 1986-08-28 | Kawasaki Steel Corp | Method and device for rolling down of hot slab to different widths |
| CN104588560A (en) * | 2014-12-26 | 2015-05-06 | 无锡透平叶片有限公司 | Molding anvil block structure for numerical control free forging blank |
| CN104841829A (en) * | 2015-05-21 | 2015-08-19 | 江苏金源锻造股份有限公司 | Squeeze roller forging technology |
| CN204867271U (en) * | 2015-07-17 | 2015-12-16 | 安阳锻压数控设备有限公司 | Whole structure of fast speed adjusting of numerical control hammer die positioning |
| CN105750471A (en) * | 2014-12-18 | 2016-07-13 | 苏州宝业锻造有限公司 | Upper anvil provided with insert |
| CN207013669U (en) * | 2017-07-13 | 2018-02-16 | 江阴南工锻造有限公司 | Forge fitting device in inclined-plane |
| CN108672625A (en) * | 2018-05-28 | 2018-10-19 | 建龙北满特殊钢有限责任公司 | A kind of processing method producing multi-step cold roll base using diameter forging machine |
| CN208083331U (en) * | 2018-03-29 | 2018-11-13 | 中信重工机械股份有限公司 | A kind of high temperature alloy block insert type forging flat anvil |
| CN109735763A (en) * | 2018-12-31 | 2019-05-10 | 宝鼎科技股份有限公司 | 25X2H4M ф A steel alloy large-size steam turbine shaft forging and preparation method |
| CN111036824A (en) * | 2019-12-26 | 2020-04-21 | 中钢集团邢台机械轧辊有限公司 | Forging method of conical step shaft |
| CN111167986A (en) * | 2020-02-26 | 2020-05-19 | 建龙北满特殊钢有限责任公司 | Forging method for improving net shape of roller blank by using radial forging machine |
-
2020
- 2020-06-16 CN CN202010547701.2A patent/CN111644550B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61193701A (en) * | 1985-02-25 | 1986-08-28 | Kawasaki Steel Corp | Method and device for rolling down of hot slab to different widths |
| CN105750471A (en) * | 2014-12-18 | 2016-07-13 | 苏州宝业锻造有限公司 | Upper anvil provided with insert |
| CN104588560A (en) * | 2014-12-26 | 2015-05-06 | 无锡透平叶片有限公司 | Molding anvil block structure for numerical control free forging blank |
| CN104841829A (en) * | 2015-05-21 | 2015-08-19 | 江苏金源锻造股份有限公司 | Squeeze roller forging technology |
| CN204867271U (en) * | 2015-07-17 | 2015-12-16 | 安阳锻压数控设备有限公司 | Whole structure of fast speed adjusting of numerical control hammer die positioning |
| CN207013669U (en) * | 2017-07-13 | 2018-02-16 | 江阴南工锻造有限公司 | Forge fitting device in inclined-plane |
| CN208083331U (en) * | 2018-03-29 | 2018-11-13 | 中信重工机械股份有限公司 | A kind of high temperature alloy block insert type forging flat anvil |
| CN108672625A (en) * | 2018-05-28 | 2018-10-19 | 建龙北满特殊钢有限责任公司 | A kind of processing method producing multi-step cold roll base using diameter forging machine |
| CN109735763A (en) * | 2018-12-31 | 2019-05-10 | 宝鼎科技股份有限公司 | 25X2H4M ф A steel alloy large-size steam turbine shaft forging and preparation method |
| CN111036824A (en) * | 2019-12-26 | 2020-04-21 | 中钢集团邢台机械轧辊有限公司 | Forging method of conical step shaft |
| CN111167986A (en) * | 2020-02-26 | 2020-05-19 | 建龙北满特殊钢有限责任公司 | Forging method for improving net shape of roller blank by using radial forging machine |
Non-Patent Citations (3)
| Title |
|---|
| 傅前进等: "中厚板轧机支承辊研制 ", 《大型铸锻件》 * |
| 宋玉冰等: "辊压机整体锻造挤压辊锻造工艺研究", 《矿山机械》 * |
| 杨景华等: "大型支承辊的锻造工艺 ", 《金属加工(热加工)》 * |
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