CN110961562A - Mould for blade blank making - Google Patents

Mould for blade blank making Download PDF

Info

Publication number
CN110961562A
CN110961562A CN201911134837.4A CN201911134837A CN110961562A CN 110961562 A CN110961562 A CN 110961562A CN 201911134837 A CN201911134837 A CN 201911134837A CN 110961562 A CN110961562 A CN 110961562A
Authority
CN
China
Prior art keywords
extrusion
rod
blank
die
insert
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.)
Pending
Application number
CN201911134837.4A
Other languages
Chinese (zh)
Inventor
关红
李琳
王丹
郑渠英
汪大成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AECC Shenyang Liming Aero Engine Co Ltd
Original Assignee
AECC Shenyang Liming Aero Engine Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AECC Shenyang Liming Aero Engine Co Ltd filed Critical AECC Shenyang Liming Aero Engine Co Ltd
Priority to CN201911134837.4A priority Critical patent/CN110961562A/en
Publication of CN110961562A publication Critical patent/CN110961562A/en
Pending legal-status Critical Current

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
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • B21J13/06—Hammers tups; Anvils; Anvil blocks
    • 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
    • B21J13/08—Accessories for handling work or tools
    • B21J13/14—Ejecting devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

The utility model provides a blade is mould for base, this mould includes ejector pin, ejector pin guide pin bushing, cushion, inserts, bed die and drift, the bed die lower extreme passes through the cushion and is connected with the ejector pin guide pin bushing, and bed die centre bore lower extreme is installed and is inserted, installs the drift in the bed die centre bore, insert and put the crowded member piece by crowded member blank extrusion of hot state in the hole of cushion intercommunication, and the conical surface of crowded member piece and the extrusion end cooperation of inserting, install the ejector pin in the ejector pin guide pin bushing centre bore. Compared with the precision forging technology, the pre-forging and final forging forming method not only saves large-scale precision forging equipment, precision tools and complex control technology, but also does not need chemical milling, and avoids environmental pollution. The metal streamline direction of the blade body of the blade is reasonable, and the mechanical property and the service performance of the blade are improved.

Description

Mould for blade blank making
Technical Field
The invention belongs to the technical field of molds for blades, and particularly relates to a mold for blank making of a blade.
Background
The compressor blade is characterized in that the blade body profile is thin, the thickness of the front edge and the rear edge is small, the alloying degree of materials is high, the subsequent procedure of the matched processing of the blade is a cold rolling process, the requirements on the machining allowance, the dimensional precision and the surface quality of a forged piece are high, the forging forming difficulty of the blade is increased by the factors, and the blade forging forming needs to adopt a new process to meet the blade forming requirement. According to the grasped information, a high-pressure compressor blade with precise cold rolling is applied to a certain engine abroad, but the blank forming mode is unknown, and the whole process route belongs to a confidential technology. Before this project, there was no breakthrough in this technology in China. Due to the characteristics of the structure, the rolling process and the high-temperature alloy of the blade with the tenon, the key control technology for the uniformity of the structures of the tenon, the transition zone and the blade profile of the blade and the coarseness of crystal grains exists, and the technology is not broken through abroad. The method breaks through the key technology, realizes the independent innovation of the blade manufacturing technology, and gets rid of the situation of being limited by people.
The traditional compressor blade adopts upset forging to manufacture a blank, and because the section difference between the tenon and the blade body is large, the blank needs to be accumulated and formed for many times, so that the rod part is subjected to idle burning for many times, the structure is thick, and the performance of a blade forging is influenced. In addition, if the upset forging process is unreasonable in calculation, the head is folded and needs to be polished and removed, the workload of auxiliary processes is increased, and the production efficiency is reduced.
Disclosure of Invention
The invention provides a die for blade blank making, which has the advantages of reasonable design, short period and high yield and aims to realize the precision forging process of blade single-side allowance of 0.5mm +/-0.2 mm, and the die comprises a mandril, a mandril guide sleeve, a cushion block, an insert block, a female die and a punch, wherein the lower end of the female die is connected with the mandril guide sleeve through the cushion block, the insert block is arranged at the lower end of a central hole of the female die, the punch is arranged in the central hole of the female die, an extrusion rod piece formed by hot extrusion rod piece blanks is arranged in a hole communicated with the cushion block, the conical surface of the extrusion rod piece is matched with the extrusion end of the insert block, and.
The insert is made of W18Cr4V material, the hardness of the insert is HRC58-62, and the height of the insert ish is more than or equal to 30mm, if the height h is too small, the tight fit surface of the insert and the female die is too small, the insert and the female die are easy to eject together when the extrusion rod piece is ejected, and the fit surface of the inner cavity of the female die is scraped; the extrusion hole of the insert consists of an upper extrusion section and a straight hole section h1And the lower extrusion section is connected end to end, and the upper extrusion section and the straight hole section are connected through a switching fillet R1Is connected to R1The extrusion die is characterized in that the extrusion die is 8-10mm, the upper extrusion section and the lower extrusion section are both flared holes, the taper α of the flared holes of the upper extrusion section is 60-90 degrees, when a hot extrusion rod blank is a fine material, the taper α is 60 degrees, when the hot extrusion rod blank is a coarse material, the taper α is 90 degrees, and the maximum diameter D of the upper extrusion section1＝D0-0.3 mm; the height h of the straight hole section of the insert12-3mm, the height h of the straight hole section1When the diameter is too small, the straight hole section is easy to damage; height h of straight hole section1Too large, the rod part of the hot extrusion rod blank is easy to be strained, and the resistance is larger during material ejection, and the bell-mouth switching R1Large to reduce metal flow resistance; diameter d of straight hole section of the insert0Equal to the middle and lower limit of the thermal state size of the head diameter of the hot extrusion rod blank, the middle and lower limit is 0-minus 0.5mm, and the distance h from the straight hole section to the bottom end face of the insert block2Is equal to the outer diameter D of the insert 01/3 and 5mm or more; the bottom section of the lower extrusion section of the insert is provided with a switching fillet R2Adapting R of the bottom surface of the insert2The radius is not too large, and enough stress area on the bottom surface of the insert is ensured; the outer surface of the bottom end of the insert is provided with a chamfer.
The punch is made of 4Cr5W2VSi material, and the hardness is HRC 53-58; after the punch head enters the female die, a gap is formed between the lower end face of the large-diameter end of the punch head and the upper end face of the female die; a clearance of 0.05-0.10mm is arranged between the outer circular surface of the small-diameter end of the punch and the inner circular surface of the female die, the clearance is too large, and inverted burrs are easy to appear at the upper end of the head of the blank; the edge of the lower end face of the punch keeps a sharp edge, and if the sharp edge is chamfered, a reverse burr is also generated; the assembly part of the punch and the punch holder is fixed in size, so that the fixed end of the punch can be standardized to achieve the purpose of interchange; the punch and the punch holder are assembled in a clearance fit mode and fastened through screws, and a fine adjustment base plate is arranged between the punch holder and the upper die base plate and used for adjusting the depth b of the punch entering the female die, so that the length of the head of the extrusion rod piece is controlled.
The female die is made of 4Cr5W2VSi material, and the hardness is HRC 48-53; the female die is formed by connecting a first taper hole, a straight hole section and a second taper hole end to end, and the first taper hole is arranged at the height H of the female die1Height reduction H2The upper section of the first taper hole is provided with a transition fillet for guiding the punch; a second taper hole is formed in the position, 5mm higher than the lower end of the inner hole of the female die, so that an insert can be pressed in, and the inner diameter of a straight hole section of the female die is equal to the diameter of the head of a hot extrusion rod blank; the height H of the female die is equal to the height H of the insert block plus the length of the hot-state extrusion rod blank plus 3+ 5-10 mm; and the distance between the upper end surface of the female die and the upper end surface of the hot extrusion rod blank is more than or equal to 3 mm.
The cushion block, the ejector rod and the ejector rod guide sleeve are made of 40Cr or 5CrNiMo materials, the hardness of the cushion block and the ejector rod guide sleeve is HRC33-38, and the hardness of the ejector rod is HRC 25-31; the diameter of the inner hole of the cushion block is 0.2-0.4mm larger than that of the rod part of the hot extrusion rod blank; the diameter of an inner hole of the ejector rod guide sleeve is 0.3-0.6mm larger than that of the rod part of the thermal-state extrusion rod blank so as to prevent the rod part of the blank from being damaged and ensure that an ejector rod smoothly passes through the ejector rod guide sleeve, and the length of the ejector rod guide sleeve is larger than that of the thermal-state extrusion rod blank; the assembly clearance between the cushion block, the large end of the ejector rod guide sleeve and the lower die holder is 0.08-0.12 mm; diameter phi of working end of ejector rod1Is smaller than the diameter of the rod part of the hot extrusion rod blank.
The length of the ejector rod and the small-diameter end of the ejector rod guide sleeve needs to satisfy a formula (1) and a formula (2), and the length is as follows:
Ld＝Lg+30+10+Lw (1)
Lu-So-Lx-Lo＞10 (2)
wherein: d, the length of the ejector rod is mm; lg is the length of the rod part of the hot extrusion rod blank in mm; lx is the length of the small-diameter end of the ejector rod guide sleeve, and is mm; lw is the length of the thick rod part of the ejector rod, mm; lu is the length between the ejector rod fixing seat and the lower end face of the large-diameter end of the ejector rod guide sleeve, and is mm; lo is the length of the thick rod part of the ejector rod outside the ejector rod fixing seat, and is mm; so-the ejection stroke of the equipment, mm;
wherein: lg + Lp + Lv in equation (1), wherein: lsh is the length of the blade body of the finish forging, mm; lp-the length of the technological boss of the end forging blade tip, mm; lv is a section of 15-20 mm of the end of the rod part of the extrusion rod piece.
The invention has the beneficial effects that:
compared with the precision forging technology, the pre-forging and final forging forming method not only saves large-scale precision forging equipment, precision tools and complex control technology, but also does not need chemical milling, and avoids environmental pollution. The metal streamline direction of the blade body of the blade is reasonable, and the mechanical property and the service performance of the blade are improved.
The project takes a thin blade body and a compressor blade which is difficult to deform as a research object, breaks through the manufacturing technology of adopting a semi-precision forging blank and a cold precision rolling blade body for the GH2150 alloy blade for the first time in China, successfully adopts the technological methods of extruding a rod, upsetting, pre-forging and finish forging forming, and realizes the precision forging technological process of 0.5mm +/-0.2 mm of the single-side allowance of the blade. The requirements of cold rolling process on the processing allowance, the size precision and the surface quality of the forged piece are met, the international advanced level is reached, and the domestic blank is filled.
The invention has wide application range and can be popularized and applied to the manufacture of compressor blades of other models.
Compared with the traditional upsetting forming method, the single blade forging saves 0.15 kilogram of material consumption, each engine has a GH150 alloy cold-rolled blade 1332, and the material consumption of the single engine is reduced by nearly 12 ten thousand yuan. Meanwhile, the phenomenon that multiple times of accumulation and forming are needed in upsetting and the rod part is in idle burning is avoided, and the structure and the performance of the blade forging are improved.
Drawings
FIG. 1 is a schematic view of a mold for blade blank manufacturing according to the present invention;
FIG. 2 is a schematic diagram of an insert structure of a blade blank-making die according to the present invention;
FIG. 3 is a schematic view of a negative mold structure of a blade blank making mold according to the present invention;
FIG. 4 is a schematic diagram of a die punch for blade blank making according to the present invention;
FIG. 5 is a schematic view of a mold ejector pin structure for blade blank making according to the present invention;
FIG. 6 is an assembly diagram of the ejector rod guide sleeve, the ejector rod and the ejector rod fixing seat of the blade blank-making mold of the present invention;
FIG. 7 is a schematic view of an extrusion rod member structure of a blade blank-making mold according to the present invention;
the method comprises the following steps of 1-ejector rod, 2-ejector rod guide sleeve, 3-cushion block, 4-insert, 5-female die, 6-punch and 7-ejector rod fixing seat.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Determining the design parameters of the rod extruding die for forging forming, wherein the rod extruding die is shown in figure 7, and the design is the design parameters of the rod extruding die for forging forming in the step 1 of blank making; designing a forging blank suitable for rolling and a tool for forging the forging blank, wherein the subsequent process of matching and processing the blade is a cold rolling process, the requirements on the machining allowance, the dimensional precision and the surface quality of a forged piece are high, and the factors increase the difficulty of forging and forming the blade, so that the reasonable forging structure is designed, and the optimal forging process is selected, which is inevitably the main task and the working difficulty of the research subject; the blade forging is delivered in a solid solution state to meet the requirement that the hardness of a subsequent cold rolling process is not too high easily to prevent cracks; the structure uniformity and coarse grain of three parts of a tenon, an R switching part and a cold-rolled blade body of the blade are controlled; the blade needs to pass three long-term test examinations of 2 multiplied by 107 times of sigma stress cyclic vibration fatigue examination and 1200 hours of engine accumulation before installation.
As shown in fig. 1 to 6, a blade blank making die comprises a mandril, a mandril guide sleeve, a cushion block, an insert, a female die and a punch, wherein the lower end of the female die is connected with the mandril guide sleeve through the cushion block, the insert is installed at the lower end of a central hole of the female die, the punch is installed in the central hole of the female die, an extrusion rod piece formed by hot extrusion rod piece blanks is installed in a hole communicated with the cushion block, the conical surface of the extrusion rod piece is matched with the extrusion end of the insert, and the mandril is installed in the central hole of the.
The insert is made of W18Cr4V material, the hardness of the insert is HRC58-62, the height h of the insert is equal to 30mm, if the height h is too small, the tight fit surface of the insert and a female die is too small, the insert is easy to eject together when an extrusion rod piece is ejected, and the female die is enabled to eject the extrusion rod pieceScraping and scrapping the matching surface of the inner cavity of the die; the extrusion hole of the insert consists of an upper extrusion section and a straight hole section h1And the lower extrusion section is connected end to end, and the upper extrusion section and the straight hole section are connected through a switching fillet R1Is connected to R1The extrusion die is 10mm in value, the upper extrusion section and the lower extrusion section are both flared holes, the taper α of the flared holes of the upper extrusion section is 60-90 degrees, when a hot extrusion rod blank is a fine material, the taper α is 60 degrees, when the hot extrusion rod blank is a coarse material, the taper α is 90 degrees, and the maximum diameter D of the upper extrusion section1＝D0-0.3 mm; the height h of the straight hole section of the insert1Is 2.5mm, and the height h of the straight hole section1When the diameter is too small, the straight hole section is easy to damage; height h of straight hole section1Too large, the rod part of the hot extrusion rod blank is easy to be strained, and the resistance is larger during material ejection, and the bell-mouth switching R1Large to reduce metal flow resistance; diameter d of straight hole section of the insert0Equal to the diameter of the head of the hot extrusion rod blank, and the distance H from the straight hole section to the bottom end face of the insert2Is equal to the outer diameter D of the insert 01/3 and 5mm or more; the taper of the bell-mouthed hole of the lower extrusion section is 4 degrees, and the bottom section of the lower extrusion section is provided with a switching fillet R2Adapting R of the bottom surface of the insert2The radius is not too large, and enough stress area on the bottom surface of the insert is ensured; the outer surface of the bottom end of the insert is provided with a 0.5 multiplied by 45 degree chamfer, and the working surface of the insert is polished to Ra0.8 mu m.
The punch is made of 4Cr5W2VSi material, and the hardness is HRC 53-58; after the punch head enters the female die, a 10mm gap is formed between the lower end face of the large-diameter end of the punch head and the upper end face of the female die; a gap of 0.05mm is formed between the outer circular surface of the small-diameter end of the punch and the inner circular surface of the female die, the gap is too large, and inverted burrs are easy to appear at the upper end of the head of the blank; the edge of the lower end face of the punch keeps a sharp edge, and if the sharp edge is chamfered, a reverse burr is also generated; the assembly part of the punch and the punch holder is fixed in size, so that the fixed end of the punch can be standardized to achieve the purpose of interchange; the punch and the punch holder are assembled in a clearance fit mode and fastened through screws, and a fine adjustment base plate is arranged between the punch holder and the upper die base plate and used for adjusting the depth b of the punch entering the female die, so that the length of the head of the extrusion rod piece is controlled.
The female die is made of 4Cr5W2VSi material, and the hardness is HRC 48-53; the female die is composed of a first taper hole and a straight hole section D2And a second taper hole which is connected end to end, wherein the first taper hole is arranged at the height H of the female die1Height reduction H2The upper section of the first taper hole is provided with a transition fillet with the radius of 3mm, and the transition fillet is used for guiding the punch; the taper of the first taper hole is 15 degrees; a second taper hole is formed in the position, 5mm higher than the lower end of the inner hole of the female die, and the taper of the second taper hole is 30 degrees so as to press an insert; the inner diameter of a straight hole section of the female die is equal to the diameter of the head of the hot extrusion rod blank; height H of the female die1The height h of the insert and the length of the hot-state extrusion rod bar are plus 3 plus 5-10 mm; the distance between the upper end surface of the female die and the upper end surface of the hot extrusion rod blank is more than or equal to 3 mm; and the inner hole of the female die and the excircle are kept to be highly concentric.
The cushion block, the ejector rod and the ejector rod guide sleeve are made of 40Cr or 5CrNiMo materials, the hardness of the cushion block and the ejector rod guide sleeve is HRC33-38, and the hardness of the ejector rod is HRC 25-31; the diameter of the inner hole of the cushion block is 0.3mm than that of the rod part of the hot extrusion rod blank; the diameter of the inner hole of the ejector rod guide sleeve is 0.5mm larger than that of the hot extrusion rod blank rod part, so that the blank rod part is prevented from being damaged, and the ejector rod is ensured to pass through smoothly. However, the clearance is too large, the rod part of the hot extrusion rod blank is easy to bend and is clamped in a die during material ejection, and the ejector rod is broken; the length of the ejector rod guide sleeve is 40mm longer than that of the hot extrusion rod blank rod part, wherein 30mm is an adjustment amount reserved for the length of the blank rod part, and 10mm is reserved for ensuring that the ejector rod stays in the ejector rod guide sleeve all the time; the assembly clearance between the cushion block, the large end of the ejector rod guide sleeve and the lower die base is unilateral 0.1 mm; diameter phi of working end of ejector rod1Is 0.5mm smaller than the diameter of the rod part of the hot extrusion rod blank.
The length of the ejector rod and the small-diameter end of the ejector rod guide sleeve needs to satisfy a formula (1) and a formula (2), and the length is as follows:
Ld＝Lg+30+10+Lw (1)
Lu-So-Lx-Lo＞10 (2)
wherein: d, the length of the ejector rod is mm; lg is the length of the rod part of the hot extrusion rod blank in mm; lx is the length of the small-diameter end of the ejector rod guide sleeve, and is mm; lw is the length of the thick rod part of the ejector rod, mm, and the length value is 71 mm; lu is the length between the ejector rod fixing seat and the lower end face of the large-diameter end of the ejector rod guide sleeve, and is mm; lo is the length of the thick rod part of the ejector rod outside the ejector rod fixing seat, and is mm; so-the ejection stroke of the equipment;
wherein: lg + Lp + Lv in equation (1), wherein: lsh-the length of the finish forged blade body; lp-the length of the technological boss of the end forging blade tip; an Lv-section of the end of the rod part of the extrusion rod piece, which is 15-20 mm in length, has cracks and other defects and needs to be cut off.
The one-time use process of the die for blade blank manufacturing comprises the following steps:
when the die is arranged in the die holder, the ejector rod is connected with the ejector rod fixing seat of the die holder, the ejector rod guide sleeve penetrates through the ejector rod and is arranged on the ejector device at the bottom of the press machine together, and the large-diameter end of the ejector rod guide sleeve is arranged on the bottom plate of the lower die holder; placing the insert into the female die, fixing the cushion block on the lower end surface of the female die, placing the female die provided with the insert and the cushion block into a round hole of the lower die holder, fastening the lower die holder by using a bolt, and clamping the female die; mounting the large-diameter end of the punch on a punch holder of a press machine, and then fastening the large-diameter end of the punch through a screw to finish the die mounting;
extrusion molding of the extrusion rod piece: the hot extrusion rod blank is placed into a female die, then a press machine is started, the press machine works to drive a punch to move downwards to extrude the hot extrusion rod blank, the hot extrusion rod blank is extruded into an extrusion rod piece to be extruded under the matching action of the punch, the female die, an insert and a cushion block, and the punch moves reversely to return to an original position after the extrusion is finished; and then the ejector rod moves upwards under the action of the press machine to eject the extrusion rod piece out of the extrusion rod die, and the extrusion forming is finished.
When the outer diameter of the female die is small, the female die is wrapped by a lining and is placed into a round hole of a lower die base together, the lining is made of 40Cr materials, the hardness is HRC25-31, the lining consists of two semicircles, the outer diameter of the lining is in transition fit with the lower die base, and the inner diameter of the lining is in transition fit with the female die.

Claims (6)

1. The utility model provides a blade is mould for base, its characterized in that, includes ejector pin, ejector pin guide pin bushing, cushion, inserts, bed die and drift, the bed die lower extreme passes through the cushion and is connected with the ejector pin guide pin bushing, and bed die centre bore lower extreme is installed and is inserted, installs the drift in the bed die centre bore, insert and the downthehole crowded member of installing by crowded member blank extrusion of hot state, and the conical surface of crowded member and the extrusion end cooperation of inserting, install the ejector pin in the ejector pin guide pin bushing centre bore.
2. The die for blade blank making according to claim 1, wherein: the insert is made of W18Cr4V material, the hardness of the insert is HRC58-62, and the height h of the insert is more than or equal to 30 mm; the extrusion hole of the insert consists of an upper extrusion section and a straight hole section h1And the lower extrusion section is connected end to end, and the upper extrusion section and the straight hole section are connected through a switching fillet R1Is connected to R1The extrusion die is characterized in that the extrusion die is 8-10mm, the upper extrusion section and the lower extrusion section are both flared holes, the taper α of the flared holes of the upper extrusion section is 60-90 degrees, when a hot extrusion rod blank is a fine material, the taper α is 60 degrees, when the hot extrusion rod blank is a coarse material, the taper α is 90 degrees, and the maximum diameter D of the upper extrusion section1＝D0-0.3 mm; the height h of the straight hole section of the insert12-3 mm; diameter d of straight hole section of the insert0Equal to the middle and lower limit of the thermal state size of the head diameter of the hot extrusion rod blank, the middle and lower limit is 0-minus 0.5mm, and the distance h from the straight hole section to the bottom end face of the insert block2Is equal to the outer diameter D of the insert01/3 and 5mm or more; the bottom section of the lower extrusion section of the insert is provided with a switching fillet R2And the outer surface of the bottom end of the insert is provided with a chamfer.
3. The die for blade blank making according to claim 1, wherein: the punch is made of 4Cr5W2VSi material, and the hardness is HRC 53-58; after the punch head enters the female die, a gap is formed between the lower end face of the large-diameter end of the punch head and the upper end face of the female die; a gap of 0.05-0.10mm is arranged between the outer circular surface of the small diameter end of the punch and the inner circular surface of the female die.
4. The die for blade blank making according to claim 1, wherein: the female die is made of 4Cr5W2VSi material, and the hardness is HRC 48-53; the female die is formed by connecting a first taper hole, a straight hole section and a second taper hole end to end, the first taper hole is formed in the position where the height H of the female die is reduced by the height H', and the upper section of the first taper hole is provided with a transition fillet; a second taper hole is formed in the position, 5mm higher than the lower end of the inner hole of the female die, and the inner diameter of a straight hole section of the female die is equal to the diameter of the head of the hot extrusion rod blank; the height H of the female die is equal to the height H of the insert block plus the length of the hot-state extrusion rod blank plus 3+ 5-10 mm; and the distance between the upper end surface of the female die and the upper end surface of the hot extrusion rod blank is more than or equal to 3 mm.
5. The die for blade blank making according to claim 1, wherein: the cushion block, the ejector rod and the ejector rod guide sleeve are made of 40Cr or 5CrNiMo materials, the hardness of the cushion block and the ejector rod guide sleeve is HRC33-38, and the hardness of the ejector rod is HRC 25-31; the diameter of the inner hole of the cushion block is 0.2-0.4mm larger than that of the rod part of the hot extrusion rod blank; the diameter of an inner hole of the ejector rod guide sleeve is 0.3-0.6mm larger than that of the rod part of the thermal state extrusion rod blank, and the length of the ejector rod guide sleeve is larger than that of the thermal state extrusion rod blank; the assembly clearance between the cushion block, the large end of the ejector rod guide sleeve and the lower die holder is 0.08-0.12 mm; diameter phi of working end of ejector rod1Is smaller than the diameter of the rod part of the hot extrusion rod blank.
6. The die for blade blank making according to claim 1, wherein: the length of the ejector rod and the small-diameter end of the ejector rod guide sleeve needs to satisfy a formula (1) and a formula (2), and the length is as follows:
Ld＝Lg+30+10+Lw (1)
Lu-So-Lx-Lo＞10 (2)
wherein: d, the length of the ejector rod is mm; lg is the length of the rod part of the hot extrusion rod blank in mm; lx is the length of the small-diameter end of the ejector rod guide sleeve, and is mm; lw is the length of the thick rod part of the ejector rod, mm; lu is the length between the ejector rod fixing seat and the lower end face of the large-diameter end of the ejector rod guide sleeve, and is mm; lo is the length of the thick rod part of the ejector rod outside the ejector rod fixing seat, and is mm; so-the ejection stroke of the equipment, mm;
wherein: lg + Lp + Lv in equation (1), wherein: lsh is the length of the blade body of the finish forging, mm; lp-the length of the technological boss of the end forging blade tip, mm; lv is a section of 15-20 mm of the end of the rod part of the extrusion rod piece.
CN201911134837.4A 2019-11-19 2019-11-19 Mould for blade blank making Pending CN110961562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911134837.4A CN110961562A (en) 2019-11-19 2019-11-19 Mould for blade blank making

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911134837.4A CN110961562A (en) 2019-11-19 2019-11-19 Mould for blade blank making

Publications (1)

Publication Number Publication Date
CN110961562A true CN110961562A (en) 2020-04-07

Family

ID=70030832

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911134837.4A Pending CN110961562A (en) 2019-11-19 2019-11-19 Mould for blade blank making

Country Status (1)

Country Link
CN (1) CN110961562A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112207142A (en) * 2020-09-24 2021-01-12 哈尔滨理工大学 Multiple extrusion device and method for preparing layered heterogeneous magnesium alloy
CN116441430A (en) * 2023-06-19 2023-07-18 中国航发成都发动机有限公司 Blade hot extrusion forming device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009220152A (en) * 2008-03-17 2009-10-01 Shuichi Naito Cold heading device
CN102310154A (en) * 2011-09-20 2012-01-11 沈阳黎明航空发动机(集团)有限责任公司 Die in alloy blade precision forging process
CN205200426U (en) * 2015-11-12 2016-05-04 苏州工业园区新凯精密五金有限公司 Mould structure of driving cog intense beam intermediate tooth shape
CN105598337A (en) * 2015-12-28 2016-05-25 无锡透平叶片有限公司 Blade extruding rod mould
CN109351906A (en) * 2018-11-23 2019-02-19 中国航发沈阳黎明航空发动机有限责任公司 It is a kind of suitable for the rough forging of rolling and its pier nose mould design method of forging

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009220152A (en) * 2008-03-17 2009-10-01 Shuichi Naito Cold heading device
CN102310154A (en) * 2011-09-20 2012-01-11 沈阳黎明航空发动机(集团)有限责任公司 Die in alloy blade precision forging process
CN205200426U (en) * 2015-11-12 2016-05-04 苏州工业园区新凯精密五金有限公司 Mould structure of driving cog intense beam intermediate tooth shape
CN105598337A (en) * 2015-12-28 2016-05-25 无锡透平叶片有限公司 Blade extruding rod mould
CN109351906A (en) * 2018-11-23 2019-02-19 中国航发沈阳黎明航空发动机有限责任公司 It is a kind of suitable for the rough forging of rolling and its pier nose mould design method of forging

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112207142A (en) * 2020-09-24 2021-01-12 哈尔滨理工大学 Multiple extrusion device and method for preparing layered heterogeneous magnesium alloy
CN116441430A (en) * 2023-06-19 2023-07-18 中国航发成都发动机有限公司 Blade hot extrusion forming device
CN116441430B (en) * 2023-06-19 2023-11-10 中国航发成都发动机有限公司 Blade hot extrusion forming device

Similar Documents

Publication Publication Date Title
CN101791671B (en) Precision forging method of titanium alloy blade
CN100431775C (en) Fast precise semi-axle casing extruding formation process
CN110961562A (en) Mould for blade blank making
CN102601151A (en) Method for manufacturing precision combined dies by involute spline open extrusion
CN101545440B (en) Method for manufacturing swivel of actuating lever for motorcycle
CN103240359B (en) Near-net forming method of high-strength internal hexagon bored bolt
CN108480930B (en) A kind of processing method of low-pressure compressor casing
CN103252409B (en) Near-net forming die for high-strength internal hexagonal through-hole bolt
CN210387405U (en) Tool die for hot forging and cold forging composite distribution plastic forming
CN104826972B (en) The continuous upsetting die of I shape joint and forming technology thereof
CN208303761U (en) Configure the conjunction gear cold-finishing mould of spline mandril
CN110102631B (en) Waste edge cutting machine for ultra-thin structure nonferrous metal net-near forming component
CN204657385U (en) The combination die of automobile axle clutch plate gear blank warm and hot forging
CN113399611A (en) Friction press-based spline hub forging process
CN107520389B (en) Chamfering die and chamfering method
CN201815557U (en) Cold extruding die for dual-head pipe joint
CN201500731U (en) Punching, drawing and forming composite die for grinding disk of motor
CN210359071U (en) Parking gear blank precision forging die
CN215089842U (en) Cold extrusion forming die for special-shaped shaft sleeve of automobile transmission
CN218283409U (en) Forming die for thin-wall inner cone bushing
CN213944760U (en) A mold processing group for compound cold extrusion of car spring supporting seat
CN215657619U (en) Forming die for flange part with hole penetrating through flange
CN217858620U (en) Tooth-shaped forging die for meshing sleeve of automobile differential lock
CN212884796U (en) Final forging die for producing engine steel piston
CN213379109U (en) Hexagon bolt and cold heading forming die thereof

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
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20200407