CN106694788A - GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method - Google Patents

GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method Download PDF

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Publication number
CN106694788A
CN106694788A CN201611093428.0A CN201611093428A CN106694788A CN 106694788 A CN106694788 A CN 106694788A CN 201611093428 A CN201611093428 A CN 201611093428A CN 106694788 A CN106694788 A CN 106694788A
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CN
China
Prior art keywords
forging
alloy
hollow shaft
shaft neck
forged piece
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
CN201611093428.0A
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Chinese (zh)
Inventor
魏志坚
谢永富
欧阳斌
斯庆阳
杜常鹏
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.)
AVIC Guizhou Anda Aviation Forging Co Ltd
Original Assignee
Guizhou Anda Aviation Forging 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 Guizhou Anda Aviation Forging Co Ltd filed Critical Guizhou Anda Aviation Forging Co Ltd
Priority to CN201611093428.0A priority Critical patent/CN106694788A/en
Publication of CN106694788A publication Critical patent/CN106694788A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • 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
    • B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
    • 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
    • B21J5/025—Closed die forging

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

Abstract

The invention discloses a GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method. The method includes the steps that a GH4169 alloy bar is heated according to a certain manner in the first place and then subjected to upsetting, punching, pre-rolling and chamfering, and then a rectangular ring blank is obtained; and then the rectangular ring blank is placed into a blank film and subjected to forming according to a certain deformation speed, and a GH4169 alloy hollow shaft neck forged piece is obtained. By means of the method, deformation quantity in all areas can be distributed reasonably, and optimally-matched structure performance is obtained. The method is used for hollow shaft neck forged piece squeezing and forming.

Description

GH4169 alloy hollow axle journal forging near isothermal forging manufacturing process
Technical field
The present invention relates to a kind of near isothermal forging manufacturing process, more particularly to GH4169 alloy hollow axle journal forging is near Isothermal forging manufacturing process.
Background technology
GH4169 alloy hollow axle journals forging is hollow thin-wall shaped piece, and shape upper end is a typhon mouthful, lower end band There is a cylindrical tube, wall is thin at horn mouth, and is relatively large in diameter, and cylinder wall thickness are relatively thin.Because the forging is aircraft engine office Key tumbler, condition of work is very severe, it is desirable to which forging has intensity higher, fracture toughness and preferable low-cycle fatigue Can etc., it is difficult to meet these performance requirements using common die forging and open die forging.The current forging mainly uses bar stock closed mould Shape is swaged into, then is produced by way of machine adds digging, but the method one side is in die forging, it may appear that deform uneven, bar portion Deflection is small, causes forging tissue undesirable；Another aspect machine adds the digging to cut off the forging flow lines of forging, so as to influence forging Quality.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind and uses circular material blank near isothermal forging extrusion forming method, squeezes During pressing formation, extrusion die effect is played at mold cavity intermediate change step, and upper end maximum outside diameter die cavity plays extruding The effect of cylinder, significantly improves the deformation of tubular journal forging bar portion, and blank deformation is big, is conducive to obtaining fine uniform As-forged microstructure.
In order to solve the above technical problems, GH4169 alloy hollows axle journal forging near isothermal forging shaping side of the present invention Method, its technical scheme is comprised the following steps：
Being heated in forge furnace by the GH4169 alloy bar materials of specification blanking, first by bar be heated to 880 DEG C~ 900 DEG C of insulations, soaking time presses 0.4min/mm~0.6min/mm calculating；990 DEG C~1020 DEG C insulations are warming up to again, during insulation Between press 0.6min/mm~0.8min/mm calculating；After insulation, jumping-up, punching are carried out to bar, pre- is rolled and internal diameter top and outer Rectangle ring billet is obtained after the lower bevel of footpath；
Rectangle ring billet is inserted in shaping dies, mold is driven with v1The speed that pushes of=1.5mm/s~2mm/s is carried out Extruding, when mold is closed with lower mould, will push speed and is reduced to v2=(0.3~0.5) v1, squeezes to middle base Pressure, until shaping is complete, obtains GH4169 alloy hollow axle journal forging.
Compared with prior art, beneficial effects of the present invention are as follows：
GH4169 alloy hollows axle journal forging near isothermal forging manufacturing process of the present invention, when improve forging forming Deflection, makes original grain fully crush, and obtains fine uniform tissue；Push speed and first use v1=1.5mm/s~2mm/s, When mold is closed with lower mould, speed will be pushed and be reduced to v2=(0.3~0.5) v1, both prevented temperature rise phenomenon to produce, Simultaneously also can each position of reasonable distribution forging deflection, obtain best match structure property.Lowering temperature uniform after forging is improved, Be conducive to improving the uniformity of forging tissue, obtain forging section state consistency as-forged microstructure high.And in rectangle ring billet Internal diameter top carries out chamfering with external diameter bottom, rectangle ring billet is preferably fitted with shaping dies.
Brief description of the drawings
The present invention is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural representation of rectangle ring billet.
Fig. 2 is the die-filling schematic diagram of rectangle ring billet.
Fig. 3 is that mold closes schematic diagram with lower mould.
Fig. 4 is forging forming schematic diagram.
Fig. 5 is tubular journal forging structural representation.
Specific embodiment
Implementing GH4169 alloy hollows axle journal forging near isothermal forging manufacturing process of the present invention needs to provide forging The equipment such as heating furnace, forcing press, manipulator.Its specific embodiment：
The main chemical elements content (percentage by weight) of the GH4169 alloys is：C content≤0.08%, containing Cr amount 17.0%~21.0%, ni content 50.0%~55.0%, containing Co amount≤1.0%, containing Mo amount 2.80%~3.30%, containing Al amount 0.30%~0.70%, containing Ti amounts 0.75%~1.15%, containing Nb amounts 4.75%~5.50%, containing B amounts≤0.006%, containing Mg Measure≤0.01%, measured containing Mn amounts≤0.35%, si content≤0.35%, P content≤0.015%, containing S amounts≤0.015%, containing Cu ≤ 0.30%, containing Ca amounts≤0.01%, containing Pb amounts≤0.0005%, containing Se amounts≤0.0003%, balance of Fe.
The step of this method, is as follows：
Being heated in forge furnace by the GH4169 alloy bar materials of specification blanking, first by bar be heated to 880 DEG C~ 900 DEG C of insulations, soaking time presses 0.4min/mm~0.6min/mm calculating；990 DEG C~1020 DEG C insulations are warming up to again, during insulation Between press 0.6min/mm~0.8min/mm calculating；After insulation, jumping-up, punching are carried out to bar, rolled in advance, obtained straight-flanked ring after chamfering Base 3, as shown in Figure 1；
As shown in Fig. 2 rectangle ring billet 3 is inserted in shaping dies, mold 1 is driven with v1=1.5mm/s~2mm/s's Push speed to be extruded, when mold 1 is closed with lower mould 2, as shown in figure 3, will push speed is reduced to v2=(0.3 ~0.5) v1, middle base 4 is extruded, until shaping is complete, as shown in figure 4, obtaining GH4169 alloy hollow axle journal forging 5, as shown in Figure 5.

Claims (1)

1. a kind of GH4169 alloy hollows axle journal forging near isothermal forging manufacturing process, it is characterised in that comprise the following steps：
Being heated in forge furnace by the GH4169 alloy bar materials of specification blanking, bar is first heated to 880 DEG C~900 DEG C Insulation, soaking time presses 0.4min/mm~0.6min/mm calculating；990 DEG C~1020 DEG C insulations are warming up to again, and soaking time is pressed 0.6min/mm~0.8min/mm is calculated；After insulation, bar is carried out jumping-up, punching, it is pre- roll and internal diameter top and external diameter under Rectangle ring billet is obtained after portion's chamfering；
Rectangle ring billet is inserted in shaping dies, mold is driven with v1The speed that pushes of=1.5mm/s~2mm/s is extruded, When mold is closed with lower mould, speed will be pushed and be reduced to v2=(0.3~0.5) v1, middle base is extruded, until Shaping is complete, obtains GH4169 alloy hollow axle journal forging.
CN201611093428.0A 2016-12-01 2016-12-01 GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method Pending CN106694788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611093428.0A CN106694788A (en) 2016-12-01 2016-12-01 GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611093428.0A CN106694788A (en) 2016-12-01 2016-12-01 GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method

Publications (1)

Publication Number Publication Date
CN106694788A true CN106694788A (en) 2017-05-24

Family

ID=58935508

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611093428.0A Pending CN106694788A (en) 2016-12-01 2016-12-01 GH4169 alloy hollow shaft neck forged piece nearly-isothermal forging forming method

Country Status (1)

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CN (1) CN106694788A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101761542A (en) * 2009-11-27 2010-06-30 贵州安大航空锻造有限责任公司 Large integral disc-shaft forging piece formed by similar isothermal forging
CN101758159A (en) * 2009-11-27 2010-06-30 贵州安大航空锻造有限责任公司 Near isothermal forging method for whole titanium alloy disc shaft forgeable piece
CN202192194U (en) * 2011-07-22 2012-04-18 江阴市燎原锻压有限公司 Die forging device for titanium alloy forging piece
CN103447768A (en) * 2013-08-27 2013-12-18 贵州安大航空锻造有限责任公司 Preparing method of GH4169 alloy large-scale special-shaped cross section annular blank
CN103831380A (en) * 2013-12-15 2014-06-04 无锡透平叶片有限公司 Die forging forming technology for GH4169 alloy forge piece
CN104741875A (en) * 2015-03-25 2015-07-01 诸城市福日机械有限公司 Processing process of axle shaft sleeve
CN105397004A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Forming method of large GH4169 alloy die forging
CN105734473A (en) * 2014-12-12 2016-07-06 陕西宏远航空锻造有限责任公司 Isothermal forging structure control method of TC17 titanium alloy

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101761542A (en) * 2009-11-27 2010-06-30 贵州安大航空锻造有限责任公司 Large integral disc-shaft forging piece formed by similar isothermal forging
CN101758159A (en) * 2009-11-27 2010-06-30 贵州安大航空锻造有限责任公司 Near isothermal forging method for whole titanium alloy disc shaft forgeable piece
CN202192194U (en) * 2011-07-22 2012-04-18 江阴市燎原锻压有限公司 Die forging device for titanium alloy forging piece
CN103447768A (en) * 2013-08-27 2013-12-18 贵州安大航空锻造有限责任公司 Preparing method of GH4169 alloy large-scale special-shaped cross section annular blank
CN103831380A (en) * 2013-12-15 2014-06-04 无锡透平叶片有限公司 Die forging forming technology for GH4169 alloy forge piece
CN105734473A (en) * 2014-12-12 2016-07-06 陕西宏远航空锻造有限责任公司 Isothermal forging structure control method of TC17 titanium alloy
CN104741875A (en) * 2015-03-25 2015-07-01 诸城市福日机械有限公司 Processing process of axle shaft sleeve
CN105397004A (en) * 2015-12-02 2016-03-16 贵州安大航空锻造有限责任公司 Forming method of large GH4169 alloy die forging

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