CN106734838A - TC17 titanium alloy tubular journal forging near isothermal forging manufacturing process - Google Patents
TC17 titanium alloy tubular journal forging near isothermal forging manufacturing process Download PDFInfo
- Publication number
- CN106734838A CN106734838A CN201611093430.8A CN201611093430A CN106734838A CN 106734838 A CN106734838 A CN 106734838A CN 201611093430 A CN201611093430 A CN 201611093430A CN 106734838 A CN106734838 A CN 106734838A
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- CN
- China
- Prior art keywords
- forging
- titanium alloy
- tubular journal
- manufacturing process
- near isothermal
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Classifications
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- 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 kind of TC17 titanium alloys tubular journal forging near isothermal forging manufacturing process, its step is：After first TC17 titanium alloy rod bars are heated according to certain mode, through jumping-up, punching, roll in advance, after chamfering, obtain rectangle ring billet；The rectangle ring billet is inserted in fetal membrane again, according to certain deformation velocity, it is formed, obtain TC17 titanium alloy tubular journal forging.The method can reasonably distribute the deflection in each region, obtain the structure property of best match.The method is used for tubular journal forging extrusion molding.
Description
Technical field
The present invention relates to a kind of near isothermal forging manufacturing process, more particularly to TC17 titanium alloy tubular journal forging is near
Isothermal forging manufacturing process.
Background technology
TC17 titanium alloy tubular 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 bar portion tissue undesirable, complete, thick, straight continuous grain boundary α occurs on the original β crystal boundaries of bar portion
Phase；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, TC17 titanium alloys tubular 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 TC17 titanium alloy rod bars of specification blanking, first by bar be heated to transformation temperature with
Lower 40 DEG C of insulations, soaking time presses 0.3min/mm~0.5min/mm calculating；More than transformation temperature 30 DEG C of insulations, insulation are warming up to again
Time presses 0.4min/mm~0.6min/mm calculating；After insulation, bar is carried out jumping-up, punching, it is pre- roll and internal diameter top and
Rectangle ring billet is obtained after external diameter lower bevel；
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, middle base is extruded,
Until shaping is complete, TC17 titanium alloy tubular journal forging is obtained.
Compared with prior art, beneficial effects of the present invention are as follows：
TC17 titanium alloys tubular 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 reasonable distribution blank in β phase regions and the deflection of (alpha+beta) phase region, during forging 70% or so deflection fall β it is interval,
30% or so deflection falls to be obtained when (alpha+beta) is mutually interval the structure property of best match.When blank temperature is by transformation temperature
When, the α phases for separating out again can obtain certain deformation in two-phase section, and crystal grain is crushed, it is to avoid the formation of α crystal boundaries；Improve
Lowering temperature uniform after forging it is possible to prevente effectively from be conducive to while grain boundary α is mutually separated out improve forging tissue uniformity, forged
Part section state consistency preferable basket tissue high.And chamfering is carried out on the internal diameter top of rectangle ring billet and external diameter bottom, make
Rectangle ring billet can preferably fit 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 TC17 titanium alloys tubular 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 TC17 alloys is：Containing Al amounts 4.5%~5.5%, containing Sn amounts
1.6%~2.4%, containing Zr amounts 1.6%~2.4%, containing Mo amounts 3.5%~4.5%, containing Cr amounts 3.5%~4.5%, containing Fe amounts
0.30%th, C content 0.05%, leaded wastewater 0.05%, containing H amount 0.0125%, containing O amount 0.08%~0.13%, balance of Ti.
The step of this method, is as follows：
Being heated in forge furnace by the TC17 titanium alloy rod bars of specification blanking, first by bar be heated to transformation temperature with
Lower 40 DEG C of insulations, soaking time presses 0.3min/mm~0.5min/mm calculating；More than transformation temperature 30 DEG C of insulations, insulation are warming up to again
Time presses 0.4min/mm~0.6min/mm calculating；After insulation, jumping-up, punching are carried out to bar, rolled in advance, obtained rectangle after chamfering
Ring billet 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 TC17 titanium alloy tubular journal forging
5, as shown in Figure 5.
Claims (1)
1. a kind of TC17 titanium alloys tubular journal forging near isothermal forging manufacturing process, it is characterised in that comprise the following steps：
Being heated in forge furnace by the TC17 titanium alloy rod bars of specification blanking, first bar is heated to 40 below transformation temperature
DEG C insulation, soaking time press 0.3min/mm~0.5min/mm calculate；More than transformation temperature 30 DEG C of insulations, soaking time are warming up to again
Calculated by 0.4min/mm~0.6min/mm；After insulation, jumping-up, punching are carried out to bar, is rolled and internal diameter top and external diameter in advance
Rectangle ring billet is obtained after lower bevel；
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 TC17 titanium alloy tubular journal forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093430.8A CN106734838A (en) | 2016-12-01 | 2016-12-01 | TC17 titanium alloy tubular journal forging near isothermal forging manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611093430.8A CN106734838A (en) | 2016-12-01 | 2016-12-01 | TC17 titanium alloy tubular journal forging near isothermal forging manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106734838A true CN106734838A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611093430.8A Pending CN106734838A (en) | 2016-12-01 | 2016-12-01 | TC17 titanium alloy tubular journal forging near isothermal forging manufacturing process |
Country Status (1)
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| CN (1) | CN106734838A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848343A (en) * | 2018-11-28 | 2019-06-07 | 通裕重工股份有限公司 | A kind of abnormal shape step ring forging forming method |
| CN112974698A (en) * | 2021-02-07 | 2021-06-18 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Journal die forging method for aeroengine |
Citations (5)
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| CN101804441A (en) * | 2008-12-25 | 2010-08-18 | 贵州安大航空锻造有限责任公司 | Near-isothermal forging method of TC17 biphase titanium alloy disc forge piece |
| CN103100623A (en) * | 2012-12-12 | 2013-05-15 | 贵州航宇科技发展股份有限公司 | Roll-forming method of TC17 titanium alloy complex deformed section ring unit |
| CN104148554A (en) * | 2014-06-30 | 2014-11-19 | 贵州安大航空锻造有限责任公司 | Titanium alloy and annular titanium alloy forge piece forming method |
| CN104480416A (en) * | 2014-11-29 | 2015-04-01 | 无锡透平叶片有限公司 | Cross-phase region forging process of TC18 titanium alloy on screw press |
| 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 |
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2016
- 2016-12-01 CN CN201611093430.8A patent/CN106734838A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804441A (en) * | 2008-12-25 | 2010-08-18 | 贵州安大航空锻造有限责任公司 | Near-isothermal forging method of TC17 biphase titanium alloy disc forge piece |
| CN103100623A (en) * | 2012-12-12 | 2013-05-15 | 贵州航宇科技发展股份有限公司 | Roll-forming method of TC17 titanium alloy complex deformed section ring unit |
| CN104148554A (en) * | 2014-06-30 | 2014-11-19 | 贵州安大航空锻造有限责任公司 | Titanium alloy and annular titanium alloy forge piece forming method |
| CN104480416A (en) * | 2014-11-29 | 2015-04-01 | 无锡透平叶片有限公司 | Cross-phase region forging process of TC18 titanium alloy on screw press |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848343A (en) * | 2018-11-28 | 2019-06-07 | 通裕重工股份有限公司 | A kind of abnormal shape step ring forging forming method |
| CN109848343B (en) * | 2018-11-28 | 2020-09-11 | 通裕重工股份有限公司 | Forging forming method for replacing ring of hydraulic pile driver |
| CN112974698A (en) * | 2021-02-07 | 2021-06-18 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Journal die forging method for aeroengine |
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Application publication date: 20170531 |