CN103586378B - High temperature alloy dual-property dish forming process of roll milling - Google Patents
High temperature alloy dual-property dish forming process of roll milling Download PDFInfo
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- CN103586378B CN103586378B CN201310551488.2A CN201310551488A CN103586378B CN 103586378 B CN103586378 B CN 103586378B CN 201310551488 A CN201310551488 A CN 201310551488A CN 103586378 B CN103586378 B CN 103586378B
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Abstract
The invention provides a kind of forming process of roll milling of high temperature alloy double-properties turbine disk.The principal character of this technique uses two-sided roll milling forming technology and induction heating method to carry out turbine disk roll milling forming at high operating temperatures, can once-forming go out diskware profile and produce the Grain size distribution of dual-property.The high temperature alloy dish base that this technique uses can be the powder disk base after high temperature insostatic pressing (HIP), also can be that requirement dish base crystal grain can not be too thick, and powder disk base is without rarefaction defect, and between particle, seam is good by the ingot casting dish base through forging.Compared with the existing isothermal forging+duplex structure Technology for Heating Processing generally used, the technical advantage of the manufacture method of this high temperature alloy double-properties turbine disk is that the geometry simultaneously forming diskware organizes dual-property with two, eliminate duplex structure Technology for Heating Processing, technological process is short, numerical control operating, process stabilizing, mouldless shaping, low load, low cost, is easy to commercial Application.
Description
Technical field
The present invention relates to a kind of forming process of roll milling of high temperature alloy double-properties turbine disk.
Background technology
In the prior art, no matter be ingot casting blank, or powder disk base, generally use the Integral die-forged process forming turbine disk both at home and abroad.Integral die-forged technique comprises common die forging, thermal differential forging and isothermal forging.Isothermal forging can improve the uniformity of diskware structure property, but die cost is very high.Dual-property dish is divided into pairing gold dual-property dish and single alloy double performance dish.Pairing gold dual-property dish makes wheel rim position with lasting, creep resisting coarse-grain alloy, make wheel hub position with the thin peritectic alloy of high strength, two parts are coupled together by methods such as welding, high temperature insostatic pressing (HIP) compound or superplastic forgings and has just made pairing gold dual-property dish.The manufacturing process technology difficult point of this dish is how to avoid to coil edge and core two kinds of alloys may become " Weak link " of formation of crack and single alloy double performance dish does not exist " weak link " problem, but can not doing required grain size gradient by Integral die-forged method distributes.The method of existing two kinds of single alloy double performance dishes of manufacture, first method is with thin crystalline flour end base and special thermal treatment stove, makes core keep low temperature carefully brilliant, makes wheel rim keep high temperature and grain growth, have a rational Temperature Distribution in transition region.This key problem in technology is the thermal insulation of design core or cooling device.The typical process manufacturing single alloy double performance dish in the world makes thin crystalline flour end base by isothermal forging (ITF), then obtain dual-property dish by duplex structure heat treatment (DMHT).Due to the heat conducting effect of the turbine disk self, between core and wheel rim, the long-time larger temperature difference is kept to be a very difficult thing.Another kind method uses thin crystalline flour end base, Zhi Duan center and transition region, and an outer rim eddy-current heating does not forge, and causes grain growth; Its shortcoming is that outer rim has not forged void defects, is difficult to keep heart portion to stablize low temperature.
Diskware two-sided roll milling is a kind of hot forming new technology, its advantage be load low, without mould, flexibility, Digital Control, process stabilizing.The authorized utility model patent (patent No. Zl200720195059.6) of corresponding two-sided roll milling forming equipment.Usual diskware heats together with in heating furnace with ram, carries out isothermal spreading.A nearest disk miller two-sided roll milling forming induction heating technique has declared patent of invention (application number 201110399183.5), and this technology achieves controlled, the non-samming roll milling forming of diskware.The present invention is by above-mentioned two kinds of technology for the manufacture of high temperature alloy double-properties turbine disk, and invention emphasis is concrete forming technology.
Summary of the invention
The invention provides a kind of forming process of roll milling of high temperature alloy double-properties turbine disk.The technical characteristic of this technique is: the high temperature alloy dish base used can be the powder disk base after high temperature insostatic pressing (HIP), also can be that requirement dish base crystal grain can not be too thick, and powder disk base is without rarefaction defect, and between particle, seam is good by the ingot casting dish base through forging.Use two-sided roll milling forming technology and induction heating method to carry out turbine disk roll milling forming at high operating temperatures, can once-forming go out diskware profile and produce the Grain size distribution of dual-property.
This is a kind of manufacture method of brand-new high temperature alloy double-properties turbine disk, compared with the existing isothermal forging+duplex structure Technology for Heating Processing generally used, its advantage is that the geometry simultaneously forming diskware organizes dual-property with two, and eliminate duplex structure Technology for Heating Processing, technological process is short, numerical control operating, process stabilizing, mouldless shaping, low load, low cost, is easy to commercial Application.
The principle of this process forming high temperature alloy double-properties turbine disk is: controlling the deformation process at each position of the turbine disk, Dynamic Recrystallization, dynamically grain growth process by controlling the Temperature Distribution of diskware, strain rate distribution and Strain Distribution, obtaining shape thus, organizing all qualified double-properties turbine disk.
The method for designing of this technique is: calculate Temperature Distribution, Strain Distribution and strain rate distribution required when diskware is shaped according to the geometry of diskware and required Grain size distribution, design the movement code of ram and the geometric parameter of induction coil accordingly.The design of Temperature Distribution and the design of induction coil in the turbine disk in roll milling forming process, the design of turbine disk internal strain, strain rate distribution and the cephalomotor design of spreading, all need to use thermal forging technology numerical simulation and Crystal Evolution forecasting software.The basic data of carrying out required for these numerical computations is: double-properties turbine disk size and grain size requirement, dish base size and the distribution of initial grain degree, the heat transfer property of high-temperature alloy material, thermal deformation behavior and Crystal Evolution rule.
The parameter area of forming process of roll milling is: wheel rim position deformation temperature is higher than the temperature of the complete solid solution of δ phase, and lower than initial forging temperature, strain rate is lower than 0.001s
-1; Centre deformation temperature starts the temperature of solid solution lower than δ phase, and higher than final forging temperature, strain rate is higher than 0.005s
-1.Between wheel rim and center, temperature and strain rate smoothly transit.
accompanying drawing explanationbelow in conjunction with accompanying drawing, the present invention will be further described in detail
Fig. 1 is the diskware roll milling forming equipment principle schematic that the present invention uses, and describes by the diskware of spreading, structural relation between main shaft and 4 symmetrical rams.The rotating drive diskware of ram is around the rotation of main shaft, and the rotation after ram press-in diskware certain depth makes diskware generation spreading be out of shape.
Fig. 2 is the diskware inductive heating principle schematic diagram that the present invention uses, and in figure, D is the diameter of diskware, and L, a, b, c are the physical dimension of induction coil, and they have a significant effect to diskware Temperature Distribution.
Detailed description of the invention
Dual-property dish diameter to be formed is 200mm, maximum gauge 20mm, have in dish one dark be the wide groove for 30mm of 5mm, the internal diameter of groove is 100m.Diskware material is GH4169 high temperature alloy.The grain size of this dual-property dish requires: wheel rim position grain size is 5-6 level, and wheel hub (center) position grain size is 8-12 level, and between wheel rim and wheel hub, grain size smoothly transits.This dual-property dish shaping specific works step is as follows.
1) base: use standard state bar, through open die forging base, obtain the dish base that average grain size is 60-100 μm, dish base is equal with diskware volume, and dish base diameter is 180mm.
2) according to Grain size distribution design diskware lip temperature 1020 DEG C-1100 DEG C, central temperature 950 DEG C-1000 DEG C, designs induction heating circle, L=240mm, a=240mm, b=65-80mm, c=8-10mm accordingly.Use high-frequency induction heating power.
3) require design ram movement code according to diskware physical dimension, strain rate, comprise the amount of feeding, feed speed and ram rotating speed.
4) apply numerical simulation technology check, optimize designed by ram kinematic parameter and diskware temperature parameter.
5) induction coil is installed, ram movement code is input in computer for controlling.Be installed dish base on main shaft.
6) start spreading main frame, make ram contact diskware surface band Moving plate part and rotate, open water cold, infrared side temperature and temperature controller, induction heating power.Test point temperature is set to 1030 DEG C, heat time 30-40 minute, temperature retention time 5-10 minute, ram rotating speed 5rpm.
7) start ram programme-control, start diskware spreading distortion.
8) after spreading terminates, ram returns to diskware surface, and diskware is slow cooling in rotation, and follow procedure requires from 1030 DEG C to 450 DEG C, approximately needs 50-60 minute.
9), after diskware cools to 450 DEG C, ram resets and returns mechanical zero, and diskware air cooling is to room temperature.
Claims (2)
1. a forming process of roll milling for high temperature alloy double-properties turbine disk, is characterized in that: the dish base of described high temperature alloy is forged by ingot casting or powder sinteredly to make, and powder disk base is without rarefaction defect, and between particle, seam is good; The forming process of roll milling of described double-properties turbine disk, can once-forming go out the grain structure of diskware profile and dual-property; Distribute according to Temperature Distribution, Strain Distribution and strain rate that geometry and the required Grain size distribution of diskware calculate when diskware is shaped, design the movement code of ram and the geometric parameter of induction coil accordingly.
2., according to the forming process of roll milling of high temperature alloy double-properties turbine disk according to claim 1, for GH4169 high temperature alloy, dish base crystallite dimension is 60 μm-100 μm, and diskware edge deformation temperature 1020 DEG C-1100 DEG C, strain rate is lower than 0.001s
-1; Centre deformation temperature 950 DEG C-1000 DEG C, strain rate is higher than 0.005s
-1.
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| CN201310551488.2A CN103586378B (en) | 2013-11-08 | 2013-11-08 | High temperature alloy dual-property dish forming process of roll milling |
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| CN201310551488.2A CN103586378B (en) | 2013-11-08 | 2013-11-08 | High temperature alloy dual-property dish forming process of roll milling |
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| CN103586378A CN103586378A (en) | 2014-02-19 |
| CN103586378B true CN103586378B (en) | 2016-03-09 |
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| CN105817299B (en) * | 2016-02-02 | 2018-12-25 | 机械科学研究总院先进制造技术研究中心 | Hydraulic parallel feed mechanism for diskware spreading |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52147566A (en) * | 1976-06-02 | 1977-12-08 | Mitsubishi Heavy Ind Ltd | Disccshaped parts roll forming method |
| CN101185952A (en) * | 2007-11-05 | 2008-05-28 | 机械科学研究总院先进制造技术研究中心 | Two-sided roll milling forming method and two-sided roll milling forming equipment |
| CN201172095Y (en) * | 2007-11-15 | 2008-12-31 | 机械科学研究总院先进制造技术研究中心 | Double ended rolling forming device |
| JP2011255410A (en) * | 2010-06-10 | 2011-12-22 | Mitsubishi Materials Corp | Method for manufacturing annular compact |
| CN102497688A (en) * | 2011-12-05 | 2012-06-13 | 机械科学研究总院先进制造技术研究中心 | Induction heating technique for double-sided roll forming of discal parts |
| CN103230990A (en) * | 2013-03-14 | 2013-08-07 | 西安交通大学 | Multidirectional composite vibration incremental type rolling and forming device and technology thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU1770014C (en) * | 1990-04-04 | 1992-10-23 | Специальное Конструкторское Технологическое Бюро "Тантал" При Уфимском Авиационном Институте Им.Серго Орджоникидзе | Method of disk uncoiling (reeling out) |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52147566A (en) * | 1976-06-02 | 1977-12-08 | Mitsubishi Heavy Ind Ltd | Disccshaped parts roll forming method |
| CN101185952A (en) * | 2007-11-05 | 2008-05-28 | 机械科学研究总院先进制造技术研究中心 | Two-sided roll milling forming method and two-sided roll milling forming equipment |
| CN201172095Y (en) * | 2007-11-15 | 2008-12-31 | 机械科学研究总院先进制造技术研究中心 | Double ended rolling forming device |
| JP2011255410A (en) * | 2010-06-10 | 2011-12-22 | Mitsubishi Materials Corp | Method for manufacturing annular compact |
| CN102497688A (en) * | 2011-12-05 | 2012-06-13 | 机械科学研究总院先进制造技术研究中心 | Induction heating technique for double-sided roll forming of discal parts |
| CN103230990A (en) * | 2013-03-14 | 2013-08-07 | 西安交通大学 | Multidirectional composite vibration incremental type rolling and forming device and technology thereof |
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