CN106799448A - The rolling and fetal membrane forging of the double flange semi-rings of stainless steel are unified into shape method - Google Patents

The rolling and fetal membrane forging of the double flange semi-rings of stainless steel are unified into shape method Download PDF

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Publication number
CN106799448A
CN106799448A CN201611093443.5A CN201611093443A CN106799448A CN 106799448 A CN106799448 A CN 106799448A CN 201611093443 A CN201611093443 A CN 201611093443A CN 106799448 A CN106799448 A CN 106799448A
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CN
China
Prior art keywords
rings
stainless steel
fetal membrane
ring
rolling
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
CN201611093443.5A
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Chinese (zh)
Inventor
袁慧
李艳英
李明
刘新宇
王斌
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.)
Guizhou Anda Aviation Forging Co Ltd
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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.)
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Publication date
Application filed by Guizhou Anda Aviation Forging Co Ltd filed Critical Guizhou Anda Aviation Forging Co Ltd
Priority to CN201611093443.5A priority Critical patent/CN106799448A/en
Publication of CN106799448A publication Critical patent/CN106799448A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00Making articles shaped as bodies of revolution
    • B21H1/06Making articles shaped as bodies of revolution rings of restricted axial length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations

Abstract

Rolling and fetal membrane forging the invention discloses a kind of double flange semi-rings of stainless steel are unified into shape method, and its step is:Stainless steel bars jumping-up, punching are first obtained into middle base, roll forming again is middle ring billet, middle ring billet is machined, obtain flanged (FLGD) ring billet, flanged (FLGD) ring billet is placed in fetal membrane carries out fetal membrane forging, flanged (FLGD) ring is obtained, by ring from two centres of symmetrical flange, cutting vertically obtains two double flange semi-rings.The method can both improve operating efficiency, and the requirement to capacity of equipment is reduced again, obtain size and of good performance pair of flange semi-ring.The method is used for the shaping of double flange semi-rings.

Description

The rolling and fetal membrane forging of the double flange semi-rings of stainless steel are unified into shape method
Technical field
The present invention relates to one kind rolling and fetal membrane forging method, more particularly to the rolling of the double flange semi-rings of stainless steel and Fetal membrane forging is unified into shape method.
Background technology
Double flange semi-rings are often used as the fixing device of aero-engine casing, in actual production process, typically all It is first to be forged into one with two annular elements of flange, then two double flanges half is cut into vertically from two centres of flange Ring.Because with the presence of two flanges, directly can not be produced using annular element rolling mode, and can only be forged into using fetal membrane Shape, but the forging build is larger, flange position changes of section is very big, directly using fetal membrane forging, will to equipment tonnage Ask high, and easily occur filling the defect such as discontented.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of rolling and fetal membrane forging is unified into shape method to realize double methods Blue half loop forming, so as to obtain size and of good performance pair of flange semi-ring.
In order to solve the above technical problems, the rolling and fetal membrane forging of the double flange semi-rings of stainless steel of the present invention are unified into shape Method, its technical scheme is comprised the following steps:
Stainless steel is cutting into bar by certain specification;Stainless steel bars is heated to 1140 DEG C, is protected by 0.8min/mm Temperature;Then jumping-up, punching on forcing press, middle base is obtained after cooling, annealing;Middle base is reheated to 1140 DEG C again, It is incubated by 0.8min/mm;Be placed on looping mill and rolled, during rolling, home roll to the maximum pressure of middle base for 420KN~ 460KN, its calculation is F=a × β × n × σ × S, wherein, what a was increased pressure by for home roll gradient restricted spread is Number, β is parameter of the influence of intermediate stress, and n is stress status modulus, the flow stress of σ materials, S be home roll with middle base most Large access area;After the completion of rolling, air cooling obtains middle ring billet;
Middle ring billet is machined, two flanges are processed in middle ring billet symmetric position, obtain ring billet;
Ring billet is reheated to 1140 DEG C, is incubated by 0.8min/mm;Be placed in fetal membrane, drive forging hammer with 1260KN~ Ring billet forging and molding is with two rings of flange, the calculating side of the driving force of forging hammer by the driving force extruding drift of 1330KN Formula is F=(1+ μ) × σ × S1, in formula, μ is friction factor, the flow stress of σ materials, S1It is ring billet and the contact area of fetal membrane;
By ring from two centres of symmetrical flange, two double flange semi-rings are cut into vertically, double flange semi-rings have Two flanges.
The stainless steel is 1Cr11Ni2W2MoV steel.
Compared with prior art, beneficial effects of the present invention are as follows:
The rolling and fetal membrane forging of the double flange semi-rings of stainless steel of the present invention are unified into shape method, by rolling and fetal membrane Forging joint shaping, both improves operating efficiency, the requirement to capacity of equipment is reduced again, in the manufacturing process, to equipment Maximum pressure requirement is 1330KN so that double flange semi-rings can be shaped using ordinary press.Double flanges of the method shaping Half ring size and performance can meet use requirement.
After testing, the double flange semi-rings of the method production 1Cr11Ni2W2MoV steel, its room temperature tensile properties are as follows:
Tensile strength is 1050MPa~1060MPa (more than the 1026MPa of design use requirement), when elongation is 0.2% Yield strength for 950MPa~960MPa (more than design use requirement 841MPa), elongation after fracture be 17%~18% (more than the 9% of design use requirement), the contraction percentage of area is 71%~73% (more than the 40% of design use requirement), and Bu Shi is hard Spend is 321HB~325HB (meeting the 311HB~388HB of design use requirement).
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 middle ring billet.
Fig. 2 is flanged (FLGD) ring billet structural representation.
Fig. 3 is double flange semi-loop schematic diagrames.
Specific embodiment
The rolling and fetal membrane forging for implementing the double flange semi-rings of stainless steel of the present invention are unified into shape method and need to provide The equipment such as forge furnace, forcing press, manipulator, looping mill, cutting off machine.With China's material trademark as 1Cr11Ni2W2MoV The specific embodiment of the method is illustrated as a example by stainless steel:
The main chemical elements content (percentage by weight) of the 1Cr11Ni2W2MoV steel is:C content 0.10%~ 0.16%th, containing Cr amounts 10.50%~12.00%, ni content 1.40%~1.80%, containing W amounts 1.50%~2.00%, containing Mo amounts 0.35%~0.50%, V content 0.18%~0.30%, containing Mn amount≤0.60%, si content≤0.60%, containing S amount≤ 0.025%th, P content≤0.030%, balance of Fe.
The step of this method, is as follows:
1Cr11Ni2W2MoV steel is cutting into bar by certain specification;1Cr11Ni2W2MoV Steel Bars are heated to 1140 DEG C, it is incubated by 0.8min/mm;Then jumping-up, punching on forcing press, middle base is obtained after cooling, annealing;Again by centre Base is reheated to 1140 DEG C, is incubated by 0.8min/mm;It is placed on looping mill and is rolled, during rolling, home roll is to middle base Maximum pressure is 420KN~460KN, and its calculation is F=a × β × n × σ × S, wherein, a is home roll gradient restricted spread And the coefficient for increasing pressure by, β is parameter of the influence of intermediate stress, and n is stress status modulus, the flow stress of σ materials, and S is The Maximum Contact area of home roll and middle base;After the completion of rolling, air cooling obtains middle ring billet 1, as shown in Figure 1;
Middle ring billet 1 is machined, two flanges 3 is processed in middle ring billet symmetric position, obtain ring billet 2, As shown in Figure 2;
Ring billet 2 is reheated to 1140 DEG C, is incubated by 0.8min/mm;Be placed in fetal membrane, drive forging hammer with 1260KN~ The forging and molding of ring billet 2 is with two rings of flange, the calculating of the driving force of forging hammer by the driving force extruding drift of 1330KN Mode is F=(1+ μ) × σ × S1, in formula, μ is friction factor, the flow stress of σ materials, S1It is ring billet and the contact surface of fetal membrane Product;
By ring from two centres of symmetrical flange, two double flange semi-rings 4 are cut into vertically, double flange semi-rings have Two flanges 5, as shown in Figure 3.

Claims (2)

1. the rolling and fetal membrane forging of a kind of double flange semi-rings of stainless steel is unified into shape method, it is characterised in that including following step Suddenly:
Stainless steel is cutting into bar by certain specification;Stainless steel bars is heated to 1140 DEG C, is incubated by 0.8min/mm; Then jumping-up, punching on forcing press, middle base is obtained after cooling, annealing;Middle base is reheated to 1140 DEG C again, is pressed 0.8min/mm is incubated;Be placed on looping mill and rolled, during rolling, home roll to the maximum pressure of middle base for 420KN~ 460KN, its calculation is F=a × β × n × σ × S, wherein, what a was increased pressure by for home roll gradient restricted spread is Number, β is parameter of the influence of intermediate stress, and n is stress status modulus, the flow stress of σ materials, S be home roll with middle base most Large access area;After the completion of rolling, air cooling obtains middle ring billet;
Middle ring billet is machined, two flanges are processed in middle ring billet symmetric position, obtain ring billet;
Ring billet is reheated to 1140 DEG C, is incubated by 0.8min/mm;Be placed in fetal membrane, drive forging hammer with 1260KN~ Ring billet forging and molding is with two rings of flange, the calculating side of the driving force of forging hammer by the driving force extruding drift of 1330KN Formula is F=(1+ μ) × σ × S1, in formula, μ is friction factor, the flow stress of σ materials, S1It is ring billet and the contact area of fetal membrane;
By ring from two centres of symmetrical flange, two double flange semi-rings are cut into vertically, double flange semi-rings have two Flange.
2. the rolling and fetal membrane forging of the double flange semi-rings of stainless steel according to claim 1 is unified into shape method, its feature It is that the stainless steel is 1Cr11Ni2W2MoV steel.
CN201611093443.5A 2016-12-01 2016-12-01 The rolling and fetal membrane forging of the double flange semi-rings of stainless steel are unified into shape method Pending CN106799448A (en)

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Application Number Priority Date Filing Date Title
CN201611093443.5A CN106799448A (en) 2016-12-01 2016-12-01 The rolling and fetal membrane forging of the double flange semi-rings of stainless steel are unified into shape method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611093443.5A CN106799448A (en) 2016-12-01 2016-12-01 The rolling and fetal membrane forging of the double flange semi-rings of stainless steel are unified into shape method

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CN106799448A true CN106799448A (en) 2017-06-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108246949A (en) * 2017-12-07 2018-07-06 陕西宏远航空锻造有限责任公司 A kind of manufacturing method of saddle-shaped forge piece

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* Cited by examiner, † Cited by third party
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CN102615223A (en) * 2012-03-30 2012-08-01 山东建筑大学 Method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces
JP2012166229A (en) * 2011-02-14 2012-09-06 Jtekt Corp Method for manufacturing blank for bearing ring of rolling bearing
CN102836937A (en) * 2012-08-31 2012-12-26 武汉理工大学 Symmetrical composite roll forming method of external step ring with thick wall and small hole
CN203245182U (en) * 2013-01-14 2013-10-23 山东润驰重型锻造有限公司 Rolled kettle body flange
CN104259762A (en) * 2014-08-18 2015-01-07 贵州航宇科技发展股份有限公司 Forging and forming method for F22 flange ring pieces with non-uniform sections
CN104384826A (en) * 2014-08-18 2015-03-04 贵州航宇科技发展股份有限公司 Forging method of GH4169 alloy inner cartridge receiver special-shaped ring part
CN104889681A (en) * 2015-05-19 2015-09-09 宁波大学 Method for processing welding neck flange
CN105478637A (en) * 2015-12-25 2016-04-13 贵州航宇科技发展股份有限公司 Manufacturing method and mold of 2219 aluminum alloy strap inner flange high cylinder special-shaped annular forging
WO2016098886A1 (en) * 2014-12-19 2016-06-23 Ntn株式会社 Method for manufacturing inner member and hub ring of wheel bearing device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012166229A (en) * 2011-02-14 2012-09-06 Jtekt Corp Method for manufacturing blank for bearing ring of rolling bearing
CN102615223A (en) * 2012-03-30 2012-08-01 山东建筑大学 Method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces
CN102836937A (en) * 2012-08-31 2012-12-26 武汉理工大学 Symmetrical composite roll forming method of external step ring with thick wall and small hole
CN203245182U (en) * 2013-01-14 2013-10-23 山东润驰重型锻造有限公司 Rolled kettle body flange
CN104259762A (en) * 2014-08-18 2015-01-07 贵州航宇科技发展股份有限公司 Forging and forming method for F22 flange ring pieces with non-uniform sections
CN104384826A (en) * 2014-08-18 2015-03-04 贵州航宇科技发展股份有限公司 Forging method of GH4169 alloy inner cartridge receiver special-shaped ring part
WO2016098886A1 (en) * 2014-12-19 2016-06-23 Ntn株式会社 Method for manufacturing inner member and hub ring of wheel bearing device
CN104889681A (en) * 2015-05-19 2015-09-09 宁波大学 Method for processing welding neck flange
CN105478637A (en) * 2015-12-25 2016-04-13 贵州航宇科技发展股份有限公司 Manufacturing method and mold of 2219 aluminum alloy strap inner flange high cylinder special-shaped annular forging

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108246949A (en) * 2017-12-07 2018-07-06 陕西宏远航空锻造有限责任公司 A kind of manufacturing method of saddle-shaped forge piece

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Application publication date: 20170606