CN115533011B - Forming die, pre-forging blank, die forging and production process of 05Cr17Ni4Cu4Nb die forging - Google Patents
Forming die, pre-forging blank, die forging and production process of 05Cr17Ni4Cu4Nb die forging Download PDFInfo
- Publication number
- CN115533011B CN115533011B CN202211381280.6A CN202211381280A CN115533011B CN 115533011 B CN115533011 B CN 115533011B CN 202211381280 A CN202211381280 A CN 202211381280A CN 115533011 B CN115533011 B CN 115533011B
- Authority
- CN
- China
- Prior art keywords
- forging
- die
- piece
- blank
- finish
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/003—Selecting material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/06—Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations
-
- 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
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/022—Open die forging
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
A forming die, a pre-forging blank, a die forging piece and a production process of a 05Cr17Ni4Cu4Nb die forging piece are disclosed, wherein the forming die comprises two sets of dies, namely a pre-forging die and a finish forging die, the pre-forging die comprises a pre-forging upper die and a pre-forging lower die, the finish forging die comprises a finish forging upper die and a finish forging lower die, and the process for producing the die forging piece comprises the steps of blanking, raw material heating, pre-forging die installation, free forging, pre-forging forming, forge piece cleaning, damage repairing, pre-forging blank heating, finish forging die installation, finish forging forming, flash cutting, forge piece cleaning, damage repairing, solid solution treatment, aging treatment and physical and chemical detection.
Description
Technical Field
The invention relates to the technical field of forging, in particular to a forming die, a pre-forging blank, a die forging piece and a production process of a 05Cr17Ni4Cu4Nb die forging piece.
Background
A05 Cr17Ni4Cu4Nb precipitation hardening stainless steel part is of an arc-shaped thin-wall structure in the middle, a cylindrical boss with a large height is arranged on one side, the part belongs to a thin-wall high-branch asymmetric structure, a forging is formed by adopting a free forging process, the length, width and height of the free forging are square blocks of 370mm, 225mm and 135mm respectively, redundant materials are removed through machining to obtain a final part, and the material utilization rate is only 9.8%. In addition, the 05Cr17Ni4Cu4Nb precipitation hardening stainless steel has high hardness and low machining speed, so that the supply period of parts is longer.
Therefore, the problem to be solved by those skilled in the art is how to improve the utilization rate of the 05Cr17Ni4Cu4Nb precipitation-hardened stainless steel part material and shorten the supply cycle.
Disclosure of Invention
The invention provides a forming die, a pre-forging blank, a die forging and a production process of a 05Cr17Ni4Cu4Nb die forging to solve the problems, and the die forging with a thin-wall high-branch asymmetric structure can be produced, so that the aims of improving the material utilization rate, reducing the production cost, shortening the part manufacturing period and meeting the requirement of mass production of products are fulfilled.
The technical scheme adopted by the invention is as follows:
a forming die of a 05Cr17Ni4Cu4Nb die forging comprises two sets of dies of a preforging die and a finish forging die, wherein the preforging die consists of a preforging upper die and a preforging lower die, the finish forging die consists of a finish forging upper die and a finish forging lower die, a preforging blank boss groove matched with the small boss shape and size of the die forging is arranged on the lower surface of the preforging upper die, the lower surface of the preforging upper die is a circular arc lower convex surface of the preforging upper die matched with the arc shape and size of the die forging, the upper surface of the preforging lower die is a plane, the upper surface of the finish forging lower die is a circular arc upper convex surface of the finish forging lower die matched with the arc shape and size of the die forging, a small boss groove matched with the small boss shape and size of the die forging is arranged in the middle of the upper surface of the finish forging lower die, a die arc plate groove matched with the arc shape and size of the die forging is arranged on the finish forging upper die, the edge of the arc plate groove has an inclined demoulding inclination, a large boss inclination is arranged in the middle of the die forging groove of the die forging, and the finish forging edge of the large boss groove of the die forging is arranged on the outer periphery of the die forging.
A pre-forging blank prepared by using a forming die of a 05Cr17Ni4Cu4Nb die forging piece comprises a pre-forging blank body and a pre-forging blank boss, wherein one side surface of the pre-forging blank body is a plane, the middle of the other side surface of the pre-forging blank body is the pre-forging blank boss, the size of the pre-forging blank boss is consistent with that of a small boss of the die forging piece, the side surface of the pre-forging blank body connected with the pre-forging blank boss is an inward pre-forging blank arc surface, and the radian of the pre-forging blank arc surface is consistent with that of the die forging piece arc surface.
The die forging piece prepared by using the forming die of the 05Cr17Ni4Cu4Nb die forging piece comprises a die forging piece arc plate, a die forging piece large boss and a die forging piece small boss, wherein the die forging piece arc plate is an arc-shaped thin plate, the thickness of the die forging piece arc plate is 20mm to 35mm, the front end of the die forging piece arc plate is used as a die forging piece clamping edge, the drawing inclination of the periphery of the die forging piece arc plate is 7 degrees, the die forging piece small boss is arranged in the middle of the inner side surface of the die forging piece arc plate, the die forging piece large boss is arranged in the middle of the outer side surface of the die forging piece arc plate, the die forging piece large boss is cylindrical, and the drawing inclination of the die forging piece large boss is 7 degrees.
A production process for producing a die forging by using a forming die of a 05Cr17Ni4Cu4Nb die forging comprises the following steps:
s1, blanking: sawing 05Cr17Ni4Cu4Nb bars, and chamfering two ends of the raw material;
s2, heating raw materials: preheating raw materials, and then heating along with the temperature rise of a furnace;
s3, mounting a pre-forging die: heating a preforging die to 250-400 ℃, fully preheating, and then installing on a screw press;
s4, free forging: taking out the raw materials and forging to prepare a free forging stock;
s5, pre-forging forming: rapidly placing the free forging stock in the center of a pre-forging lower die, striking the free forging stock by a pre-forging upper die, performing pre-forging forming to obtain a pre-forging stock, taking out the pre-forging stock, and placing the pre-forging stock in air for cooling;
s6, cleaning the forged piece: carrying out sand blowing treatment on the pre-forging blank to remove surface oxide skin;
s7, repairing the flaw: polishing and removing cracks and folding defects on the surface of the pre-forging blank, and rounding off sharp corners;
s8, heating of the pre-forged blank: preheating the pre-forging stock, and then heating along with a furnace;
s9, installing a finish forging die: heating a finish forging die to 250-400 ℃, fully preheating, and then installing on a screw press or a die forging hammer;
s10, finish forging forming: transferring the heated pre-forging blank into a finish forging die cavity, positioning the pre-forging blank boss in a finish forging lower die, and performing finish forging forming to obtain a die forging piece;
s11, cutting off burrs: cutting off the flash of the die forging piece on the trimming press, and placing the die forging piece in the air for cooling;
s12, cleaning a forged piece: carrying out sand blowing treatment on the die forging to remove surface oxide skin;
s13, repairing the wound: polishing and cleaning cracks and folding defects on the surface of the die forging;
s14, solid solution treatment: carrying out solution treatment on the die forging;
s15, aging treatment: carrying out aging treatment on the die forging 7;
s16, physical and chemical detection: breaking 1 piece of the test piece in each batch, and taking a room temperature tensile test bar and a macrostructure detection test block for physical and chemical detection.
The production process for producing the die forging by using the forming die of the 05Cr17Ni4Cu4Nb die forging comprises the step S2, wherein the preheating temperature is 700-800 ℃, the heat preservation coefficient is 0.6-0.8, the heating temperature after temperature rise is 1120-1140 ℃, and the heat preservation coefficient is 0.5-0.8.
According to the production process for producing the die forging by using the forming die of the 05Cr17Ni4Cu4Nb die forging, in the step S4, the free forging stock is in a long strip shape, the height H1 direction is consistent with the length H direction of the raw material, and a fillet is reserved at the length-width joint of the free forging stock.
The production process for producing the die forging by using the forming die of the 05Cr17Ni4Cu4Nb die forging comprises the step S8, wherein the preheating temperature is 700-800 ℃, the preheating and heat preservation time is 60min-90min, the temperature after furnace temperature rise is 1120-1140 ℃, and the heat preservation time is 30min-80min.
According to the production process for producing the die forging by using the forming die of the 05Cr17Ni4Cu4Nb die forging, the transfer time of the pre-forging blank in the step S10 is not more than 30S, and the pre-forging blank is positioned on the finish forging lower die through the boss.
The production process for producing the die forging by using the forming die of the 05Cr17Ni4Cu4Nb die forging comprises the steps of S14, preheating at the solid solution temperature of 890-910 ℃ for 60min-80min, heating to 1030-1050 ℃ along with a furnace, keeping the temperature for 110-140min, and taking out the die forging and placing in the air for cooling.
According to the production process for producing the die forging by using the forming die of the 05Cr17Ni4Cu4Nb die forging, in the step S15, the aging system is to heat the die forging at 510-530 ℃ for 260-280min, and then the die forging is taken out and placed in the air for cooling.
The invention has the beneficial effects that: through reasonable design of the die structure and reasonable formulation of process parameters, smooth forming of the thin-wall high-branch asymmetric-structure die forging piece with high difficulty can be realized, the performance of the die forging piece meets the standard requirement, the material utilization rate of the 05Cr17Ni4Cu4Nb precipitation hardening stainless steel part can be improved to 27.3% from 9.8% after the die forging process is implemented, the machining allowance of the part is greatly reduced, and the machining efficiency is improved by over 65%.
Drawings
FIG. 1 is a schematic view of the raw material structure of the present invention.
Fig. 2 is a schematic view of the free forging structure of the present invention.
FIG. 3 is a schematic view of the pre-forging process of the present invention.
FIG. 4 is a front view of a pre-forged blank of the present invention.
Fig. 5 is a top view of a pre-forged blank of the present invention.
FIG. 6 is a schematic view of the finish forging process of the present invention.
FIG. 7 is a schematic structural view of a die forging of the present invention.
FIG. 8 is a front view of the die forging of the present invention.
FIG. 9 is a top view of the die forging of the present invention.
Wherein: 1-raw materials; 2-free forging stock; 3-pre-forging an upper die; 31-pre-forging blank boss groove; 32-preforging the arc lower convex surface of the upper die; 4-pre-forging the blank; 41-pre-forging a blank body; 42-pre-forging a blank circular arc surface; 43-pre-forging a blank boss; 5-pre-forging the lower die; 6-finish forging the lower die; 61-finish forging the arc convex surface of the lower die; 62-die forging small boss groove; 7-die forging; 71-large bosses of die forgings; 72-die forging arc plate; 73-small bosses of die forgings; 74-drawing inclination of the periphery of the arc-shaped plate of the die forging; 75-clamping edges of the die forging; 76-flash; 8-finish forging the upper die; 81-die forging arc plate groove; 82-large boss groove of die forging; 83-draft of the mold; 84-large boss demoulding inclination; 85-flash groove.
Detailed Description
The requirements of the 05Cr17Ni4Cu4Nb die forging 7 are as follows: the mechanical property Rm at room temperature is 1200 +/-100 Mpa, rp0.2 is more than or equal to 1000Mpa, A is more than or equal to 10 percent, Z is more than or equal to 44 percent, the macrostructure is free of defects, and the streamline is distributed along with the shape of the forged piece.
A forming die of a 05Cr17Ni4Cu4Nb die forging comprises two sets of dies of a preforging die and a finish forging die, wherein the preforging die consists of a preforging upper die 3 and a preforging lower die 5, the finish forging die consists of a finish forging upper die 8 and a finish forging lower die 6, a preforging blank boss groove 31 matched with the shape and the size of a small boss 73 of the die forging is arranged on the lower surface of the preforging upper die 3, the lower surface of the preforging upper die 3 is a preforging upper die arc lower convex surface 32 matched with the shape and the size of a die forging arc plate 72, the upper surface of the preforging lower die 5 is a plane, the upper surface of the finish forging lower die 6 is a finish forging lower die arc upper convex surface 61 matched with the shape and the size of the die forging arc plate 72, the middle of the upper surface of the finish forging lower die 6 is provided with a die forging small boss groove 62 matched with the die forging small boss 73 in shape and size, the finish forging upper die 8 is provided with a die forging arc plate groove 81 matched with the die forging arc plate 72 in shape and size, the edge of the die forging arc plate groove 81 is provided with an inclined demoulding inclination 83, the demoulding inclination 83 is 7 degrees, the middle of the die forging arc plate groove 81 is provided with a die forging large boss groove 82 matched with the die forging large boss 71 in shape and size, the edge of the die forging large boss groove 82 is provided with an inclined large boss demoulding inclination 84, and the periphery of the die forging arc plate groove 81 on the finish forging upper die 8 is provided with a flash groove 85.
A pre-forging blank prepared by using a forming die of a 05Cr17Ni4Cu4Nb die forging comprises a pre-forging blank body 41 and a pre-forging blank boss 43, wherein one side surface of the pre-forging blank body 41 is a plane, the middle of the other side surface of the pre-forging blank body 41 is the pre-forging blank boss 43, the size of the pre-forging blank boss 43 is consistent with that of a small boss 73 of the die forging, the side surface of the pre-forging blank body 41 connected with the pre-forging blank boss 43 is an inward pre-forging blank arc surface 42, and the radian of the pre-forging blank arc surface 42 is consistent with that of the die forging arc surface.
The die forging piece prepared by using the forming die of the 05Cr17Ni4Cu4Nb die forging piece comprises a die forging piece arc-shaped plate 72, a die forging piece large boss 71 and a die forging piece small boss 73, wherein the die forging piece arc-shaped plate 72 is an arc-shaped thin plate, the thickness of the die forging piece arc-shaped plate is 20mm to 35mm, the front end of the die forging piece arc-shaped plate 72 is a die forging piece clamping edge 75, the drawing inclination 74 of the periphery of the die forging piece arc-shaped plate is 7 degrees, the die forging piece small boss 73 is arranged in the middle of the inner side surface of the die forging piece arc-shaped plate 72, the die forging piece large boss 71 is arranged in the middle of the outer side surface of the die forging piece arc-shaped plate 72, the die forging piece large boss 71 is cylindrical, and the drawing inclination of the die forging piece large boss 71 is 7 degrees.
A production process for producing a die forging by using a forming die of a 05Cr17Ni4Cu4Nb die forging comprises the following steps:
s1, blanking: sawing 05Cr17Ni4Cu4Nb bars, blanking to obtain blanks with the diameter phi =180 +/-2 mm, the length H =120mm to 125mm, and rounding R5mm at two ends of the raw material 1;
s2, heating raw materials: preheating a raw material 1, heating along with a furnace, wherein the preheating temperature is 700 to 800 ℃, and keeping the temperature for 85min, wherein the heat preservation time = the heat preservation coefficient, namely the effective thickness of the raw material, the heat preservation coefficient is selected to be 0.7 during preheating, then heating along with the furnace to 1120-1140 ℃, and keeping the temperature for 60min, wherein the heat preservation time = the heat preservation coefficient, namely the effective thickness of the raw material, and the heat preservation coefficient is selected to be 0.5 at the moment;
s3, mounting a pre-forging die: heating a preforging die to 250 to 400 ℃, fully preheating, and then installing on a screw press;
s4, free forging: taking out the raw material 1, forging a long free forging blank 2 with the height H1=110 +/-5 mm, the width B =145 +/-5 mm and the length C =200 +/-5 mm, and reserving a fillet at the length-width joint of the free forging blank 2;
s5, pre-forging forming: rapidly placing the free forging stock 2 in the center of a lower pre-forging die 5, striking the free forging stock 2 by an upper pre-forging die 3, performing pre-forging forming to obtain a pre-forging stock 4, taking out the pre-forging stock 4, and then placing in air for cooling;
s6, cleaning the forged piece: carrying out sand blowing treatment on the pre-forging blank 4, and removing surface oxide skin;
s7, repairing the flaw: polishing and removing the defects of cracks, folding and the like on the surface of the pre-forging blank 4, and rounding off sharp corners;
s8, heating the pre-forging blank: preheating the pre-forging blank 4, heating with a furnace, wherein the preheating temperature is 700-800 ℃, keeping the temperature for 70min, then heating with the furnace to 1120-1140 ℃, and keeping the temperature for 30min;
s9, installing a finish forging die: heating a finish forging die to 250-400 ℃, fully preheating, and then installing on a 4000-ton screw press;
s10, finish forging forming: transferring the heated preforging blank 4 into a finish forging die cavity within 30s, positioning in a finish forging lower die 6 through a preforging blank boss 43, striking the preforging blank 4 by a finish forging upper die 8 for 2 to 3 times, and performing finish forging forming to obtain a die forging 7;
s11, cutting off burrs: cutting off the flash 76 of the die forging 7 on the trimming press, and cooling the die forging 7 in the air;
s12, cleaning a forged piece: carrying out sand blowing treatment on the die forging 7 to remove surface oxide skin;
s13, repairing the wound: polishing and cleaning the defects of cracks, folding and the like on the surface of the die forging 7;
s14, solid solution treatment: carrying out solution treatment on the die forging 7, setting the temperature of a solution furnace to be 890-910 ℃, firstly, keeping the temperature of the die forging 7 at 60min-80min, heating the die forging to 1030-1050 ℃ along with the furnace, then keeping the temperature for 110-140min, and then taking out the die forging 7 and placing the die forging in the air for cooling;
s15, aging treatment: carrying out aging treatment on the die forging 7, setting the temperature of an aging furnace to be 510-530 ℃, keeping the temperature for 260-280min, taking out the die forging 7, and cooling in the air;
s16, physical and chemical detection: breaking 1 piece of the test piece in each batch, and taking a room temperature tensile test bar and a macrostructure detection test block for physical and chemical detection.
And (4) after the sampling in the step S16, the macroscopic structure test piece of the die forging 7 has no defects, and the fiber streamline is distributed along the shape contour of the die forging 7.
Table 1 shows the mechanical properties of the test bars after the sampling detection in the step S16, and the measured value of the mechanical properties of the die forging 7 has larger margin compared with the standard requirements.
TABLE 1 mechanical Property test results of die forgings
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (10)
1. A forming die of a 05Cr17Ni4Cu4Nb die forging is characterized by comprising two sets of dies, namely a preforging die and a finish forging die, wherein the preforging die consists of a preforging upper die (3) and a preforging lower die (5), the finish forging die consists of a finish forging upper die (8) and a finish forging lower die (6), a preforging blank boss groove (31) matched with the shape and the size of a die forging small boss (73) is arranged on the lower surface of the preforging upper die (3), a preforging upper die arc lower convex surface (32) matched with the shape and the size of a die forging arc plate (72) is arranged on the lower surface of the preforging upper die (3), the upper surface of the preforging lower die (5) is a plane, and a finish forging lower die arc upper convex surface (61) matched with the shape and the size of the die forging arc plate (72) is arranged on the upper surface of the finish forging lower die (6), the middle of the upper surface of the finish forging lower die (6) is provided with a die forging small boss groove (62) matched with the die forging small boss (73) in shape and size, the finish forging upper die (8) is provided with a die forging arc plate groove (81) matched with the die forging arc plate (72) in shape and size, the edge of the die forging arc plate groove (81) is provided with an inclined demoulding inclination (83), the demoulding inclination (83) is 7 degrees, the middle of the die forging arc plate groove (81) is provided with a die forging large boss groove (82) matched with the die forging large boss (71) in shape and size, the edge of the die forging large boss groove (82) is provided with an inclined large boss demoulding inclination (84), the outer periphery of the die forging arc-shaped plate groove (81) on the finish forging upper die (8) is provided with a flash groove (85).
2. A pre-forging blank is characterized by being prepared by using the forming die of the 05Cr17Ni4Cu4Nb die forging piece as claimed in claim 1, and comprising a pre-forging blank body (41) and a pre-forging blank boss (43), wherein one side surface of the pre-forging blank body (41) is a plane, the middle of the other side surface of the pre-forging blank body (41) is the pre-forging blank boss (43), the size of the pre-forging blank boss (43) is consistent with that of the small boss (73) of the die forging piece, the side surface of the pre-forging blank body (41) connected with the pre-forging blank boss (43) is a pre-forging blank arc surface (42) facing inwards, and the radian of the pre-forging blank arc surface (42) is consistent with that of the die forging piece arc surface.
3. A die forging piece is characterized by being prepared by using the forming die of the 05Cr17Ni4Cu4Nb die forging piece as claimed in claim 1, and comprising a die forging piece arc plate (72), a die forging piece large boss (71) and a die forging piece small boss (73), wherein the die forging piece arc plate (72) is an arc-shaped thin plate, the thickness of the arc-shaped thin plate is 20mm to 35mm, the front end of the die forging piece arc plate (72) is a die forging piece clamping edge (75), the drawing inclination of the periphery of the die forging piece arc plate (72) is 7 degrees, the die forging piece small boss (73) is arranged in the middle of the inner side surface of the die forging piece arc plate (72), the die forging piece large boss (71) is cylindrical, and the drawing inclination of the die forging piece large boss (71) is 7 degrees.
4. The production process of the die forging is characterized in that the die forging production steps are carried out by using the forming die of the 05Cr17Ni4Cu4Nb die forging as claimed in claim 1:
s1, blanking: sawing 05Cr17Ni4Cu4Nb bars, and chamfering two ends of the raw material (1);
s2, heating raw materials: preheating the raw material (1), and then heating along with the furnace;
s3, mounting a pre-forging die: heating a preforging die to 250-400 ℃, fully preheating, and then installing on a screw press;
s4, free forging: taking out the raw material (1) for forging to prepare a free forging stock (2);
s5, pre-forging forming: rapidly placing the free forging stock (2) in the center of a lower pre-forging die (5), striking the free forging stock (2) by an upper pre-forging die (3), performing pre-forging forming to obtain a pre-forging stock (4), taking out the pre-forging stock (4), and placing in air for cooling;
s6, cleaning the forged piece: carrying out sand blowing treatment on the pre-forging blank (4) to remove surface oxide skin;
s7, repairing the flaw: polishing and removing cracks and folding defects on the surface of the pre-forging blank (4), and rounding off sharp corners;
s8, heating of the pre-forged blank: preheating the pre-forging stock (4), and then heating along with the furnace;
s9, installation of a finish forging die: heating a finish forging die to 250 to 400 ℃, fully preheating, and then installing the die on a screw press or a die forging hammer;
s10, finish forging forming: transferring the heated pre-forging blank (4) into a finish forging die cavity, positioning in a finish forging lower die (6) through a pre-forging blank boss (43), and performing finish forging forming to obtain a die forging piece (7);
s11, cutting off burrs: cutting off the flash (76) of the die forging (7) on the trimming press, and cooling the die forging (7) in the air;
s12, cleaning the forged piece: carrying out sand blowing treatment on the die forging (7) to remove surface oxide skin;
s13, repairing the flaw: polishing and cleaning cracks and folding defects on the surface of the die forging (7);
s14, solid solution treatment: carrying out solution treatment on the die forging (7);
s15, aging treatment: carrying out aging treatment on the die forging (7);
s16, physical and chemical detection: breaking 1 piece of the sample in each batch, and taking a room-temperature tensile test bar and a macroscopic tissue detection test block for physical and chemical detection.
5. The production process of the die forging according to claim 4, wherein in the step S2, the preheating temperature is 700-800 ℃, the heat preservation coefficient is 0.6-0.8, the heating temperature after temperature rise is 1120-1140 ℃, and the heat preservation coefficient is 0.5-0.8.
6. The production process of die forging according to claim 4, wherein in the step S4, the free forging stock (2) is long, the height H1 direction is consistent with the length H direction of the raw material (1), and the length-width joint of the free forging stock (2) is kept with round corners.
7. The production process of the die forging according to claim 4, wherein in the step S8, the preheating temperature is 700-800 ℃, the preheating and heat preservation time is 60min-90min, the temperature after furnace temperature rise is 1120-1140 ℃, and the heat preservation time is 30min-80min.
8. The process for producing die forgings according to claim 4, wherein the transfer time of the pre-forging stock (4) in the step S10 is not more than 30S, and the pre-forging stock (4) is positioned on the finish forging lower die (6) through a pre-forging stock boss (43).
9. The production process of the die forging according to claim 4, wherein in the step S14, the solid solution temperature is 890-910 ℃, the temperature is preheated for 60min-80min, then the temperature is raised to 1030-1050 ℃ along with a furnace, the temperature is kept for 110-140min, and finally the die forging (7) is taken out and placed in air for cooling.
10. The production process of the die forging according to claim 4, wherein in the step S15, the aging system is heating at 510-530 ℃ for 260-280min, and then taking out the die forging (7) and placing in air for cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211381280.6A CN115533011B (en) | 2022-11-07 | 2022-11-07 | Forming die, pre-forging blank, die forging and production process of 05Cr17Ni4Cu4Nb die forging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211381280.6A CN115533011B (en) | 2022-11-07 | 2022-11-07 | Forming die, pre-forging blank, die forging and production process of 05Cr17Ni4Cu4Nb die forging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115533011A CN115533011A (en) | 2022-12-30 |
| CN115533011B true CN115533011B (en) | 2023-03-24 |
Family
ID=84720915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211381280.6A Active CN115533011B (en) | 2022-11-07 | 2022-11-07 | Forming die, pre-forging blank, die forging and production process of 05Cr17Ni4Cu4Nb die forging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115533011B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795333A (en) * | 1986-02-14 | 1989-01-03 | National Research Development Corporation | Rotary forging |
| CN101214526A (en) * | 2008-01-04 | 2008-07-09 | 华中科技大学 | 7A04 aluminum alloy casing body parts multi-functional die forging technique and mold |
| CN101386120A (en) * | 2008-10-23 | 2009-03-18 | 海盐猛凌汽车配件有限公司 | Forming method of automobile generator claw pole |
| CN102873240A (en) * | 2012-09-27 | 2013-01-16 | 许昌中兴锻造有限公司 | Non-flash forging process for middle flanges of transmission shafts |
| CN103121075A (en) * | 2013-03-07 | 2013-05-29 | 上海交通大学 | Hot forging method for transmission shaft yoke with horizontal yoke part |
| CN104128548A (en) * | 2013-07-17 | 2014-11-05 | 国家电网公司 | Cushion die for forging sleeve with skirt portion and die component using cushion die |
| CN107855453A (en) * | 2017-10-18 | 2018-03-30 | 国营第六六厂 | A kind of forging die for combining die-forging forming |
-
2022
- 2022-11-07 CN CN202211381280.6A patent/CN115533011B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795333A (en) * | 1986-02-14 | 1989-01-03 | National Research Development Corporation | Rotary forging |
| CN101214526A (en) * | 2008-01-04 | 2008-07-09 | 华中科技大学 | 7A04 aluminum alloy casing body parts multi-functional die forging technique and mold |
| CN101386120A (en) * | 2008-10-23 | 2009-03-18 | 海盐猛凌汽车配件有限公司 | Forming method of automobile generator claw pole |
| CN102873240A (en) * | 2012-09-27 | 2013-01-16 | 许昌中兴锻造有限公司 | Non-flash forging process for middle flanges of transmission shafts |
| CN103121075A (en) * | 2013-03-07 | 2013-05-29 | 上海交通大学 | Hot forging method for transmission shaft yoke with horizontal yoke part |
| CN104128548A (en) * | 2013-07-17 | 2014-11-05 | 国家电网公司 | Cushion die for forging sleeve with skirt portion and die component using cushion die |
| CN107855453A (en) * | 2017-10-18 | 2018-03-30 | 国营第六六厂 | A kind of forging die for combining die-forging forming |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115533011A (en) | 2022-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105458135A (en) | Alloy piece forging technology | |
| CN115533011B (en) | Forming die, pre-forging blank, die forging and production process of 05Cr17Ni4Cu4Nb die forging | |
| CN113458248B (en) | Necking and flaring mixed forming method for conical barrel part with straight barrel | |
| CN102672433B (en) | Manufacture method of cone annular spherical steel workpieces | |
| CN110773691B (en) | Processing method of thin-wall aluminum alloy forging | |
| CN112626419A (en) | Manufacturing process of large-scale main shaft single vacuum steel ingot forge piece | |
| CN109465369B (en) | Ring rolling forming device for rolling and bending single integral ring of special-shaped joint | |
| CN113172190B (en) | Forging forming method | |
| CN101254517A (en) | Silumin piston contour forging technique and mold | |
| CN111761308A (en) | Manufacturing method of large conical ring piece | |
| CN112548010B (en) | Preparation method of titanium alloy elliptical ring material | |
| CN114273575B (en) | Large-deformation short-flow forging method | |
| CN114309403A (en) | Low-cost forging forming method of titanium alloy blade | |
| CN116900229B (en) | Embedded split mold opening and closing and mold opening and closing imitation forging method | |
| CN107866512A (en) | Difficult-to-deformation material blank-making method based on cross wedge rolling | |
| CN109807335B (en) | Method for manufacturing cutting tool blank with transition surface | |
| CN113894242B (en) | Roller and forging forming process thereof | |
| CN221023041U (en) | Equipment for manufacturing full-plate embossing of metal shell of calabash-shaped heat-preserving container | |
| CN107443031A (en) | A kind of moon dental cast production technology | |
| CN112474855B (en) | Extrusion die and bar forming method | |
| RU2261155C2 (en) | Method for making articles such as wheel rims | |
| CN116140517A (en) | Production process of forged pipe | |
| CN110508734B (en) | Near-net forming method for titanium alloy forged piece with warped thin plate | |
| CN116652097A (en) | Blade tenon forming method | |
| CN114160723A (en) | Forging forming method for thin-wall large-horn-shaped part |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |