CN104550622A - Method for rolling and forming beta-phase titanium alloy thick-wall ring forging - Google Patents

Method for rolling and forming beta-phase titanium alloy thick-wall ring forging Download PDF

Info

Publication number
CN104550622A
CN104550622A CN201410775857.0A CN201410775857A CN104550622A CN 104550622 A CN104550622 A CN 104550622A CN 201410775857 A CN201410775857 A CN 201410775857A CN 104550622 A CN104550622 A CN 104550622A
Authority
CN
China
Prior art keywords
special
heavy
ring
forging
titanium alloy
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
CN201410775857.0A
Other languages
Chinese (zh)
Inventor
占立水
邹伟
雷静越
苏春民
易文燕
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
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 CN201410775857.0A priority Critical patent/CN104550622A/en
Publication of CN104550622A publication Critical patent/CN104550622A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a method for rolling and forming beta-phase titanium alloy thick-wall ring forging. The method for rolling and forming beta-phase titanium alloy thick-wall ring forging comprises the following steps of: designing an intermediate blank to be a special ring blank provided with a lug boss close to an inner wall; calculating respective dimensions of the special ring blank according to an equivolumetric principle; designing a specific mould according to the shape and dimensions of the special ring blank; preparing the special ring blank from an beta-phase titanium alloy rod by using a specific mould after the beta-phase titanium alloy rod is heated until the beta-phase titanium alloy rod is heated at a temperature which can cause a deformation and is subject to upsetting, punching and pre-rolling; reheating the special ring blank until reheating the special ring blank at a temperature which can cause a deformation, and rolling the special ring blank into the thick-wall ring forging matched with appropriate rolling parameters. According to the method for rolling and forming the beta-phase titanium alloy thick-wall ring forging provided by the invention, defects such as recesses and folds arisen during the rolling of the thick-wall ring forging can be overcome efficiently, and rolling quality of the thick-wall ring forging can be improved. The method is used for rolling and forming the thick-wall ring forging.

Description

The roll-forming method of beta titanium alloy heavy wall ring forging
Technical field
The present invention relates to a kind of roll-forming method of annular forging piece, particularly relate to the roll-forming method of beta titanium alloy heavy wall ring forging.
Background technology
The roll forming of ring refers to that wall thickness reduces, the Plastic Forming mode that internal-and external diameter increases under the effect of home roll and core roller roll-force.This forming mode is when producing heavy wall ring forging, flowing velocity near the metal material of ring inner and outer wall is higher than the flowing velocity of middle part metal material, and wall thickness is larger, difference is between the two also larger, if when adopting straight-flanked ring base roll forming, the upper surface of the heavy wall ring forging after being shaped can be caused to occur groove, namely near outer wall section and the height being greater than mid portion near the height of inner wall section.
At present, the solution of this kind of ring defect has two kinds: one to be amplify forging short transverse size usually, and then machine extra bus is except facing groove or folding method; Two be add auger roller press down speed, prevent the height near inner and outer wall both sides from increasing too fast.First method can destroy the metal streamline of forging end face, reduces the intensity of ring, and waste material.Although the height of second method inner and outer wall both sides increases obtain suppression, easily make excessive metal material flow to upper end, inner and outer wall both sides also, and overstocked formation fold herein; If that bores roller presses down excessive velocities, forging end face also can be made to occur serious temperature rise phenomenon, have a strong impact on forging quality.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method adopting the special-shaped ring base near inwall place with boss to be configured as heavy wall ring forging, the method can avoid forging end face to occur groove or the defect such as folding, and improves performance and the stock utilization of ring.
For solving the problems of the technologies described above, the roll-forming method of beta titanium alloy heavy wall ring forging of the present invention, its technical scheme comprises the following steps:
Beta titanium alloy bar by specification blanking is heated to deformation temperature in forge furnace, jumping-up, punching, rolls into straight-flanked ring base in advance;
Straight-flanked ring base is placed on the chopping block of forcing press, then particular manufacturing craft is evenly placed on straight-flanked ring base, drive hammer to move down with the downforce of F=580KN ~ 5200KN, and straight-flanked ring base is pressed into required special-shaped ring base, wherein, the outer wall height h of special-shaped ring base 1be less than the height h of heavy wall ring forging, the inside wall height h of special-shaped ring base 2be greater than the height h of heavy wall ring forging; The boss upper surface thickness d of special-shaped ring base 2special-shaped ring base gross thickness d 10.25 ~ 0.35 times, lower surface thickness d 3be greater than or equal the gross thickness d of 0.4 times of special-shaped ring base 1;
Looping mill is loaded after special-shaped ring base is reheated deformation temperature, setting home roll rotating speed is 1.0rad/s, cone roller rotating speed is 0.9rad/s, after special-shaped ring base is nipped and is rolled, control radial rolling power is 380KN ~ 3400KN, axial rolling force is 280KN ~ 2400KN, drives home roll with v respectively 1=2.00mm/s ~ 4.00mm/s radial feed speed, cone roller are with v 2the axial feed velocity of=1.10mm/s ~ 2.20mm/s is rolled shaping;
When the cavity of profiled section is all full of, just reach heavy wall ring forging required size; Control cone roller and do feed motion no longer downwards, adjustment radial feed speed is 0.40mm/s and progressively reduces, and carries out school circle, shaping, be finally configured as the heavy wall ring forging of rectangle to it.
The radial feed speed v of described home roll 1with the axial feed velocity v of cone roller 2meet relation as follows:
v 1 = d 1 - d h 2 - h v 2
In formula: d 1the gross thickness of special-shaped ring base, h 2for the height of special-shaped ring base inwall, d are the thickness of heavy wall ring forging, the height of h heavy wall ring forging.
The upper/lower terminal of described particular manufacturing craft devises two mold cavities that shape is identical, size is different respectively.
Described beta titanium alloy is TB2 alloy.
Compared with prior art, beneficial effect of the present invention is as follows:
The roll-forming method of beta titanium alloy heavy wall ring forging of the present invention, heavy wall ring forging is configured as by adopting the special-shaped ring base near inwall place with boss, the advantage of this special-shaped ring base is, time finish to gauge is shaped, the upper end of special-shaped ring base outer wall is an emptying state, not by External Force Acting, under the effect of roll-force, metal material can tangentially flow except part metals material, make the internal diameter of ring, external diameter increases, outside wall thickness reduces, some metal material can vertically and Radial Flow, fill the cavity of profiled section, and can not fold overstocked formation of inner and outer wall both sides upper end.And as calculated, this special-shaped ring base is rolled into heavy wall ring forging, its deflection is 30% ~ 50%, can meet deflection requirement.
This method adopts home roll with v 1=2.00mm/s ~ 4.00mm/s radial feed speed, cone roller are with v 2the feeding mode of the axial feed velocity of=1.10mm/s ~ 2.20mm/s, makes them meet formula ensure when outside dimension reaches requirement size, profiled section is just filled complete, avoid the defect that radial feed speed and axial feed velocity do not mate and formed, as radial feed excessive velocities causes profiled section to fill the defects such as discontented, or axial feed velocity is too fast and cause occurring the defects such as folding or groove.And the radial feed speed of home roll is v 1=2.00mm/s ~ 4.00mm/s, cone roller axial feed velocity are v 2=1.10mm/s ~ 2.20mm/s can not cause temperature rise phenomenon.
Take the trade mark as the beta titanium alloy heavy wall ring forging of TB2 be example:
This alloy heavy wall ring forging is without groove, the blemish such as folding after testing.
The room temperature tensile properties of this alloy heavy wall ring forging after testing, its tensile strength is 1411Mpa ~ 1451Mpa (being greater than the 1345Mpa of instructions for use), its tensile strength is 1056MPa (being greater than the 1023.3MPa of design instructions for use), and elongation after fracture was 10% (being greater than 9% of design instructions for use).
The testing result of the drawing by high temperature duration running of this alloy heavy wall ring forging also all meets technical conditions requirement after testing.
Above-mentioned Physico-chemical tests result shows, the TB2 heavy wall ring forging property indices of the intermediate blank roll forming after improving is adopted all to meet the requirements, solve end face pit, the defect such as folding, and its mechanical property and structure property reach the instructions for use of heavy wall ring.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is intermediate blank die mould process schematic.
Fig. 2 is the structural representation of intermediate blank.
Fig. 3 is the structural representation of particular manufacturing craft.
Fig. 4 is the changes of section schematic diagram of intermediate blank in the operation of rolling.
Fig. 5 is heavy wall ring forging structural representation.
Detailed description of the invention
The roll-forming method implementing beta titanium alloy heavy wall ring forging of the present invention needs to provide the equipment such as forge furnace, forcing press, machine for rolling ring, manipulator.The beta titanium alloy being TB2 for China's material trademark below describes the detailed description of the invention of the method in detail:
The main chemical elements content (percentage by weight) of this alloy is: containing Mo amount 4.7% ~ 5.7%, V content 4.7% ~ 5.7%, containing Cr amount 7.5% ~ 8.5%, containing Al amount 2.5% ~ 3.5%, containing Fe amount≤0.30%, C content≤0.05, leaded wastewater≤0.04%, containing H amount 0.015%, containing O amount 0.15%, surplus is Ti, other element summation≤0.40.
The step of this method is as follows:
Step 1: preparation intermediate blank
TB2 alloy bar material by specification blanking is heated to deformation temperature in forge furnace, jumping-up, punching, rolls into straight-flanked ring base in advance.
Straight-flanked ring base is placed on the chopping block 300 of forcing press, then particular manufacturing craft 200 is evenly placed on straight-flanked ring base, as shown in Figure 1, drive hammer 400 to move down with the downforce of F=580KN ~ 5200KN, and straight-flanked ring base is pressed into required special-shaped ring base 100.
Size due to heavy wall ring forging 500 is known, according to equal-volume principle, special-shaped ring base 100 can be designed to structure as shown in Figure 2, wherein, and the outer wall height h of special-shaped ring base 100 1be less than the height h of heavy wall ring forging 500, the inside wall height h of special-shaped ring base 100 2be greater than the height h of heavy wall ring forging 500; The boss upper surface thickness d of special-shaped ring base 100 2special-shaped ring base 100 gross thickness d 10.25 ~ 0.35 times, lower surface thickness d 3be greater than or equal the gross thickness d of 0.4 times of special-shaped ring base 100 1.
Fig. 3 is particular manufacturing craft 200 structural representation of preparation intermediate blank 100.The upper/lower terminal of particular manufacturing craft 200 devises the mold cavity 201 and 202 that shape is identical, size is different respectively, for the heavy wall ring forging of rolling different size.
Step 2: finish to gauge is shaped
Looping mill is loaded after special-shaped ring base 100 is reheated deformation temperature, setting home roll rotating speed is 1.0rad/s, cone roller rotating speed is 0.9rad/s, after special-shaped ring base 100 is nipped and is rolled, control radial rolling power is 380KN ~ 3400KN, axial rolling force is 280KN ~ 3200KN, drives home roll with v respectively 1=2.00mm/s ~ 4.00mm/s radial feed speed, cone roller are with v 2the axial feed velocity of=1.10mm/s ~ 2.20mm/s is rolled shaping, wherein, and the radial feed speed v of home roll 1with the axial feed velocity v of cone roller 2meet relation as follows:
v 1 = d 1 - d h 2 - h v 2
In formula: d 1the gross thickness of special-shaped ring base, h 2for the height of special-shaped ring base inwall, d are the thickness of heavy wall ring forging, the height of h heavy wall ring forging.
Under the cooperation of home roll and core roller, special-shaped ring base 100 is as being in together in a semienclosed die cavity, special-shaped ring base 100 is an emptying state near the upper surface at outer wall place, not by External Force Acting, in the operation of rolling, special-shaped ring base 100 radial rolling power and be applied to boss upper end, inwall place the effect of axial rolling force under, except part metals material can tangentially flow, make the internal diameter of ring, external diameter increases, outside wall thickness reduces, some metal material can vertically and Radial Flow, fill the cavity of profiled section, its filling process as shown in Figure 4.
Step 3: school circle, shaping
When the cavity of profiled section is all full of, just reach heavy wall ring forging 500 required size; Control cone roller and do feed motion no longer downwards, adjustment radial feed speed is 0.40mm/s and progressively reduces, and carries out school circle, shaping, be finally configured as the heavy wall ring forging 500 of rectangle, as shown in Figure 5 to it.
Adopt the TB2 alloy heavy wall ring forging of said method roll forming, its ratio of height to thickness is between 0.5 ~ 1.2.

Claims (5)

1. a roll-forming method for beta titanium alloy heavy wall ring forging, is characterized in that, comprises the following steps:
Beta titanium alloy bar by specification blanking is heated to deformation temperature in forge furnace, jumping-up, punching, rolls into straight-flanked ring base in advance;
Straight-flanked ring base is placed on the chopping block of forcing press, then particular manufacturing craft is evenly placed on straight-flanked ring base, drive hammer to move down with the downforce of F=580KN ~ 5200KN, and straight-flanked ring base is pressed into required special-shaped ring base, wherein, the outer wall height h of special-shaped ring base 1be less than the height h of heavy wall ring forging, the inside wall height h of special-shaped ring base 2be greater than the height h of heavy wall ring forging; The boss upper surface thickness d of special-shaped ring base 2special-shaped ring base gross thickness d 10.25 ~ 0.35 times, lower surface thickness d 3be greater than or equal the gross thickness d of 0.4 times of special-shaped ring base 1;
Looping mill is loaded after special-shaped ring base is reheated deformation temperature, setting home roll rotating speed is 1.0rad/s, cone roller rotating speed is 0.9rad/s, after special-shaped ring base is nipped and is rolled, control radial rolling power is 380KN ~ 3400KN, axial rolling force is 280KN ~ 3200KN, drives home roll with v respectively 1=2.00mm/s ~ 4.00mm/s radial feed speed, cone roller are with v 2the axial feed velocity of=1.10mm/s ~ 2.20mm/s is rolled shaping;
When the cavity of profiled section is all full of, just reach heavy wall ring forging required size; Control cone roller and do feed motion no longer downwards, adjustment radial feed speed is 0.40mm/s and progressively reduces, and carries out school circle, shaping, be finally configured as the heavy wall ring forging of rectangle to it.
2. the roll-forming method of beta titanium alloy heavy wall ring forging according to claim 1, is characterized in that, described beta titanium alloy is TB2 alloy.
3. the roll-forming method of beta titanium alloy heavy wall ring forging according to claim 1 and 2, is characterized in that, the radial feed speed v of described home roll 1with the axial feed velocity v of cone roller 2meet relation as follows:
v 1 = d 1 - d h 2 - h v 2
In formula: d 1the gross thickness of special-shaped ring base, h 2for the height of special-shaped ring base inwall, d are the thickness of heavy wall ring forging, the height of h heavy wall ring forging.
4. the roll-forming method of beta titanium alloy heavy wall ring forging according to claim 1 and 2, is characterized in that, the upper/lower terminal of described particular manufacturing craft devises two mold cavities that shape is identical, size is different respectively.
5. the roll-forming method of beta titanium alloy heavy wall ring forging according to claim 1 and 2, is characterized in that, the ratio of height to thickness of described heavy wall ring forging is between 0.5 ~ 1.2.
CN201410775857.0A 2014-12-15 2014-12-15 Method for rolling and forming beta-phase titanium alloy thick-wall ring forging Pending CN104550622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410775857.0A CN104550622A (en) 2014-12-15 2014-12-15 Method for rolling and forming beta-phase titanium alloy thick-wall ring forging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410775857.0A CN104550622A (en) 2014-12-15 2014-12-15 Method for rolling and forming beta-phase titanium alloy thick-wall ring forging

Publications (1)

Publication Number Publication Date
CN104550622A true CN104550622A (en) 2015-04-29

Family

ID=53068287

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410775857.0A Pending CN104550622A (en) 2014-12-15 2014-12-15 Method for rolling and forming beta-phase titanium alloy thick-wall ring forging

Country Status (1)

Country Link
CN (1) CN104550622A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105363973A (en) * 2015-12-02 2016-03-02 贵州安大航空锻造有限责任公司 Method for formation of beta-phase titanium alloy multi-step large profiled ring
CN108472710A (en) * 2015-07-31 2018-08-31 奥托福克斯两合公司 The method for manufacturing odd-shaped cross section looping mill rolling product

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5582281A (en) * 1994-07-19 1996-12-10 Chuetsu Metal Works Co., Ltd. Method of connecting a sliding member to a synchronizer ring
JP2001355030A (en) * 2000-06-12 2001-12-25 Mitsubishi Materials Corp Copper alloy-made hot-die forged synchronizer ring having excellent fatigue strength in chamfer part
CN102764836A (en) * 2012-07-05 2012-11-07 无锡市钻通工程机械有限公司 Forging method for titanium alloy disk-shaped piece
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
CN103691855A (en) * 2013-12-16 2014-04-02 贵州安大航空锻造有限责任公司 Method for rolling rectangular structural steel ring blank to form irregularly-shaped thin-walled ring part
CN103966535A (en) * 2014-05-06 2014-08-06 西北工业大学 Beta phase nearly isothermal forging of high-damage tolerant titanium alloy TC4-DT

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5582281A (en) * 1994-07-19 1996-12-10 Chuetsu Metal Works Co., Ltd. Method of connecting a sliding member to a synchronizer ring
JP2001355030A (en) * 2000-06-12 2001-12-25 Mitsubishi Materials Corp Copper alloy-made hot-die forged synchronizer ring having excellent fatigue strength in chamfer part
CN102764836A (en) * 2012-07-05 2012-11-07 无锡市钻通工程机械有限公司 Forging method for titanium alloy disk-shaped piece
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
CN103691855A (en) * 2013-12-16 2014-04-02 贵州安大航空锻造有限责任公司 Method for rolling rectangular structural steel ring blank to form irregularly-shaped thin-walled ring part
CN103966535A (en) * 2014-05-06 2014-08-06 西北工业大学 Beta phase nearly isothermal forging of high-damage tolerant titanium alloy TC4-DT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108472710A (en) * 2015-07-31 2018-08-31 奥托福克斯两合公司 The method for manufacturing odd-shaped cross section looping mill rolling product
CN108472710B (en) * 2015-07-31 2019-10-25 奥托福克斯两合公司 The method for manufacturing odd-shaped cross section looping mill rolling product
CN105363973A (en) * 2015-12-02 2016-03-02 贵州安大航空锻造有限责任公司 Method for formation of beta-phase titanium alloy multi-step large profiled ring

Similar Documents

Publication Publication Date Title
CN103691855B (en) The roll forming of structural steel straight-flanked ring base is the method for special-shaped thin wall ring
CN104607579A (en) Rolling forming method for aluminium alloy thick wall ring forge piece
CN103722107B (en) The roll forming of rectangular titanium alloy base is the method for special-shaped thin wall ring
CN100584482C (en) Method for rolling and shaping titanium alloy special-shaped ring forging
CN100574925C (en) The method for rolling and shaping of titanium alloy taper ring forged piece
CN104550584A (en) Roll forming method for cobalt-based superalloy thick-wall ring forgings
CN104607578A (en) Roll forming method for stainless steel thick-wall ring forged piece
CN103691853B (en) The roll forming of nickel base superalloy straight-flanked ring base is the method for special-shaped thin wall ring
CN104550583A (en) Method for rolling and forming alpha-phase titanium alloy thick-wall ring forging
CN104550585A (en) Rolling forming method of structural steel thick-wall ring forging
CN105397004A (en) Forming method of large GH4169 alloy die forging
CN103706736B (en) The roll forming of aluminium alloy straight-flanked ring base is the method for special-shaped thin wall ring
CN105537473A (en) Forming method of nickel-based high-temperature alloy multi-step large special-shaped ring part
CN103691854B (en) The roll forming of cobalt base superalloy straight-flanked ring base is the method for special-shaped thin wall ring
CN105414233A (en) Backward extrusion die with back pressure and processing technology adopting same
CN111112526A (en) Manufacturing method of IN718 alloy axial asymmetric multi-flange casing ring piece
CN104624879B (en) The roll-forming method of bearing steel heavy wall ring forging
CN104550622A (en) Method for rolling and forming beta-phase titanium alloy thick-wall ring forging
CN101658858A (en) Cross wedge rolling forming method of hollow shaft head of automobile rear bridge
CN103521583A (en) Device and method for spinning cylindrical titanium alloy part
CN104550586A (en) Rolling and forming method for iron-based high-temperature alloy thick-walled ring forging
CN105382157A (en) Forming method for large special-shaped structural steel multi-step ring piece
CN104308056B (en) The hot forging forming method of cylindrical forged piece
CN105382155A (en) Roll forming method for alpha-beta two-phase titanium alloy thick-wall ring forged piece
CN103658168A (en) Method for rolling rectangular die block steel ring blank into abnormal-shaped thin-wall ring member

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20150429