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 PDFInfo
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- 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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- Prior art keywords
- rings
- stainless steel
- fetal membrane
- ring
- rolling
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- 238000005242 forging Methods 0.000 title claims abstract description 24
- 210000002219 Extraembryonic Membranes Anatomy 0.000 title claims abstract description 22
- 238000005096 rolling process Methods 0.000 title claims abstract description 19
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 17
- 239000010935 stainless steel Substances 0.000 title claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000004080 punching Methods 0.000 claims abstract description 4
- 241001081830 Degeneriaceae Species 0.000 claims description 9
- 239000000463 materials Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000003570 air Substances 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 238000004364 calculation methods Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052729 chemical elements Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 239000011514 iron Substances 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000034 methods Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
- B21H1/06—Making articles shaped as bodies of revolution rings of restricted axial length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
Abstract
Description
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)
Priority Applications (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 |
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 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106799448A true CN106799448A (en) | 2017-06-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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 |
Country Status (1)
| Country | Link |
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| CN (1) | CN106799448A (en) |
Cited By (1)
| 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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|---|---|---|---|---|
| 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 |
-
2016
- 2016-12-01 CN CN201611093443.5A patent/CN106799448A/en not_active Application Discontinuation
Patent Citations (9)
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |