CN104404420B - A kind of titanium alloy welding component vacuum heat deformation control method for opening big window - Google Patents
A kind of titanium alloy welding component vacuum heat deformation control method for opening big window Download PDFInfo
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- CN104404420B CN104404420B CN201410592247.7A CN201410592247A CN104404420B CN 104404420 B CN104404420 B CN 104404420B CN 201410592247 A CN201410592247 A CN 201410592247A CN 104404420 B CN104404420 B CN 104404420B
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- component
- support plate
- column
- titanium alloy
- big window
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Arc Welding In General (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of titanium alloy welding component vacuum heat deformation control methods for opening big window, include the following steps：The first step：Protection support plate is installed respectively in two ends of component, is connected and is supported by column pull rod；Second step：Enter stove modes of emplacement according to the design feature regulation component of component, selection is closed the longer one end of barrel lenght and is disposed vertically downward；Third walks：Component selection room temperature enters stove, forvacuum, and heating is kept the temperature after reaching predetermined temperature, then furnace cooling；4th step：After support plate cooling and when having certain interval with component cylinder, then support plate vertically dismantled.Its advantage is that：The method for connecting d type using both ends support plate, intermediate draw bar, the control relative to particular manufacturing craft deforms, simple in structure, easily operated, oval and deflection deformation can occur with control member, avoid and add hot sizing repeatedly.
Description
Technical field
The invention belongs to a kind of titanium alloy vacuum heat treatment methods, and in particular to a kind of titanium alloy welding structure for opening big window
Part vacuum heat deformation control method, it is suitable for opening the thin-wall titanium alloy class part of big window.
Background technology
Increasingly extensive titanium alloy member is applied on space product, is on the one hand to convenient for installing large number of equipment in inside
Big window must be opened up；On the other hand, it is limited by circle circle equipment and titanium alloy plate book size, component is justified by multiple circles
Molding cylinder Combination Welding forms, and component includes multiple tracks welding of longitudinal seam and circumferential seam and welding residual stress is big, needs to move back by destressing
Fire achievees the purpose that prevent from deforming and crack.In heat treatment complex deformation easily occurs for this kind of component, at present in produce reality, only
Optimize by traditional heat treatment process parameter, cannot effective control member different parts deformation, therefore follow-up machine cannot be met
The requirement of processing.Due to opening titanium alloy welding this body structure of component and the limitation of shape of big window, monolithic mold is used
The hot sizing operation cycle is long and inconvenient and expensive.
Invention content
The object of the present invention is to provide a kind of titanium alloy welding component vacuum heat deformation control method for opening big window,
It can effectively control the heat-treatment distortion of thin-walled, the titanium alloy welding component for opening big window, and component is made to meet follow-up machining
Requirement, and it is easy to operate.
The invention is realized in this way a kind of titanium alloy welding component vacuum heat Deformation control side opening big window
Method, it includes the following steps,
The first step：Component both ends installation protection support plate, support plate are connected and are supported, column upper mounting boss using column, with
Support plate is reduced to the pressure of component, there are gaps with component internal diameter size for support plate outer diameter, to ensure in heating and thermal insulation state
Lower dimensional fits are good；
Second step：Component is entered into stove, selection is closed the longer one end of barrel lenght and is disposed vertically downward, to reduce component certainly
Deformation caused by weight；
Third walks：Component selection room temperature enters stove, and forvacuum can prevent workpiece from aoxidizing during heating, rises
Temperature is kept the temperature after reaching predetermined temperature, then furnace cooling；
4th step：After support plate cooling and when having gap with component cylinder, then support plate to be dismantled, support plate should vertically take out,
Avoid the collision to component cylinder.
The first step component both ends protection support plate is to be connect using column pull rod with the fixed mode of component, by upper
Pull rod upright nut at support plate is fixed, and protection support plate is loop configuration and there are lightening holes, it is possible to reduce support plate weight, protection
The cutting edge portion of support plate has gradient, is installed convenient for support plate, has installation base on column pull rod, can be supported, subtract to support plate
Lack pressure of the support plate to component, support plate can accurately control the circularity of component cylinder, by the connection with column, can prevent open
The generation of the component cylinder deflection deformation of big window.
When the third step vacuum heat, forvacuum degree reaches 1~5 × 10-2Pa prevents component during heating
It aoxidizes；700 DEG C are risen to the speed of 2~3 DEG C/min, it is 1~5 × 10 to keep vacuum degree-2Pa；Component is kept the temperature at 700 DEG C
1.5h, then furnace cooling to less than 200 DEG C of closing diffusion pumps, component are come out of the stove when less than 80 DEG C.
It is an advantage of the invention that 1) support plate is used to add the method for column, controls and deform relative to particular manufacturing craft, structure letter
It is single, it is easily operated, it can reach the purpose that the deformation of big window deflection is opened in control；2) stove, the liter of slow heating are entered using low temperature
Warm technique reduces out the thermal stress that the heating of big window component generates, reduces the generation of deformation；3) by specified vacuum degree,
Heating rate, holding temperature and time are advantageously implemented the higher force performance of component and the best combination compared with small deformation；4) base
In the rule that the support plate of grasp is thermally expanded with component, using the purpose by support plate control to component cylinder roundness；5) pass through band
The vacuum heat of tooling, component have reached the dual purpose of annealing and school shape, and the welded unit for solving out big window generates
The problem of crackle and deflection deformation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the titanium alloy welding component for opening big window in the embodiment of the present invention；
Fig. 2, which is that the titanium alloy welding component for opening big window in the embodiment of the present invention is used, protects support plate schematic diagram；
Fig. 3 is to open what column used in the titanium alloy welding component of big window was connect with support plate in the embodiment of the present invention
Tooling schematic diagram.
Fig. 4 enters stove placement position figure for the titanium alloy welding component for opening big window in the embodiment of the present invention.
In figure, 1 upper support plate, 2 boss, 3 columns, 4 lower support plates.
Specific implementation mode
It describes in detail with reference to the accompanying drawings and examples to the present invention：
A kind of titanium alloy welding component vacuum heat deformation control method for opening big window, includes the following steps：
The first step：Component both ends installation protection support plate, support plate are connected and are supported, column upper mounting boss using column, with
Support plate is reduced to the pressure of component, there are certain intervals with component internal diameter size for support plate outer diameter, to ensure in heating and thermal insulation
Dimensional fits are good under state；
Second step：Enter stove modes of emplacement according to the design feature regulation component of component, it is longer that selection is closed barrel lenght
One end is disposed vertically downward, is deformed caused by member dead weight with reducing；
Third walks：Component selection room temperature enters stove, and forvacuum can prevent workpiece from aoxidizing during heating, rises
Temperature is kept the temperature after reaching predetermined temperature, then furnace cooling；
4th step：After support plate cooling and when having certain interval with component cylinder, then support plate dismantled.Support plate should vertically take
Go out, avoids the collision to component cylinder.
When the third step vacuum heat, forvacuum degree reaches (1~5) × 10-2Pa prevents component in heating process
It is middle to aoxidize；700 DEG C are risen to the speed of 2~3 DEG C/min, holding vacuum degree is (1~5) × 10-2Pa；Component is at 700 DEG C
1.5h is kept the temperature, then furnace cooling to less than 200 DEG C of closing diffusion pumps, component are come out of the stove when less than 80 DEG C.
Support plate is protected, to be connect using column, to pass through the upright nut at upper support plate with the fixed mode of component in component both ends
It is fixed.
Support plate is protected as loop configuration and there are lightening holes, it is possible to reduce support plate weight.
The cutting edge portion of support plate has gradient, is installed convenient for support plate.
There is installation base on column pull rod, support plate can be supported, reduces pressure of the support plate to component.
Support plate can accurately control the circularity of component cylinder, by the connection with column, can prevent open the structure of big window
The generation of part cylinder deflection deformation.
By Fig. 1 open the titanium alloy welding component vacuum heat Deformation control of big window for, geomery is shown in attached
Fig. 1 justifies welding forming by BT20 titanium alloy plate circles, and component overall length is 1200mm, and section maximum gauge is 360mm, is existed
A plurality of welding of longitudinal seam and circumferential seam.Roundness deformation is required to be less than 1mm before and after vacuum heat, component straightness is less than 1.5mm.With stove material
Test piece meets the requirement of performance σ b >=930MPa, δ 5 >=10%, appearance non-oxidation and pollution.
Specific implementation mode is carried out by following processing step：4 points of the first step and straight line degree measurement record：Measure component cylinder
Body level and vertical direction outer diameter (360 dimensions of φ), (horizontal direction that is determined by four chain-dotted lines and therewith at
The outer diameter of 90 ° of vertical direction), measure the whole straightness of component cylinder.Second step：The installation protection support of component both ends
Disk, support plate structure type such as Fig. 2.Support plate is connected and is supported using column, and column upper mounting boss can prop up support plate
Support reduces support plate to the pressure of component, such as Fig. 3.There are certain interval, (radial direction is reserved with component internal diameter size for support plate outer diameter
1.5mm), to ensure that dimensional fits are good under heating and thermal insulation state.Third walks：Entered according to the design feature regulation component of component
Stove modes of emplacement, selection are closed the longer one end of barrel lenght and are disposed vertically downward, deformed caused by member dead weight with reducing, such as
Fig. 4.4th step component vacuum heat：Forvacuum degree reaches (1~5) × 10-2Pa prevents component from occurring during heating
Oxidation；700 DEG C are risen to the speed of 2~3 DEG C/min, holding vacuum degree is (1~5) × 10-2Pa；Component keeps the temperature 1 at 700 DEG C~
2h, then furnace cooling to less than 200 DEG C of closing diffusion pumps, component are come out of the stove when less than 80 DEG C.Preferred processing mode is as follows：
Forvacuum degree reaches 3 × 10-2Pa prevents component from aoxidizing during heating；700 DEG C are risen to the speed of 2 DEG C/min,
It is 3 × 10 to keep vacuum degree-2Pa；Component keeps the temperature 1.5h at 700 DEG C, then furnace cooling to less than 200 DEG C of closing diffusion pumps, structure
Part is come out of the stove when less than 80 DEG C.5th step：After support plate cooling and when having certain interval with component cylinder, then support plate dismantled.
Support plate should vertically take out, and avoid the collision to component cylinder.The quality testing of 6th step component：After measuring component vacuum heat
Outer diameter and straightness size and the performance with stove test piece, check appearance color, acquisition meets inter process size and requires and property
The component that can be required.
As shown in Fig. 2, the cutting edge portion of upper and lower end protection support plate has gradient, it is outside by component body end surface inner stopper
It tilts, is easily installed and dismantles.
As shown in figure 3, the dismounting of support plate, the protrusion of column are convenient in the protruding member part of upper and lower end protection support plate
It is fixed convenient for passing through nut.
Claims (1)
1. a kind of titanium alloy welding component vacuum heat deformation control method for opening big window, it is characterised in that：It includes such as
Lower step,
The first step：Component both ends installation protection support plate, support plate is connected and is supported, column upper mounting boss using column, to reduce
Support plate is to the pressure of component, and there are gaps with component internal diameter size for support plate outer diameter, to ensure the ruler under heating and thermal insulation state
Very little no-float；Support plate is protected, to be connect using column, to pass through the column at upper support plate with the fixed mode of component in component both ends
Nut is fixed, and protection support plate is loop configuration and there are lightening holes, it is possible to reduce support plate weight protects the cutting edge portion of support plate to have
It is gradient, it is installed convenient for support plate, has installation base on column, support plate can be supported, reduce pressure of the support plate to component, support
Disk can accurately control the circularity of component cylinder, by the connection with column, the component cylinder of big window can be prevented open to bend
The generation of deformation；
Second step：Component is entered into stove, selection is closed the longer one end of barrel lenght and is disposed vertically downward, led to reduce member dead weight
The deformation of cause；
Third walks：Component selection room temperature enters stove, and forvacuum can prevent workpiece from aoxidizing during heating, and heating reaches
It is kept the temperature after to predetermined temperature, then furnace cooling；Forvacuum degree reaches 1~5 × 10-2Pa prevents component during heating
It aoxidizes；700 DEG C are risen to the speed of 2~3 DEG C/min, it is 1~5 × 10 to keep vacuum degree-2Pa；Component is kept the temperature at 700 DEG C
1.5h, then furnace cooling to less than 200 DEG C of closing diffusion pumps, component are come out of the stove when less than 80 DEG C；
4th step：After support plate cooling and when having gap with component cylinder, then support plate dismantled, support plate should vertically take out, and avoid
Collision to component cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592247.7A CN104404420B (en) | 2014-10-29 | 2014-10-29 | A kind of titanium alloy welding component vacuum heat deformation control method for opening big window |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410592247.7A CN104404420B (en) | 2014-10-29 | 2014-10-29 | A kind of titanium alloy welding component vacuum heat deformation control method for opening big window |
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| Publication Number | Publication Date |
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| CN104404420A CN104404420A (en) | 2015-03-11 |
| CN104404420B true CN104404420B (en) | 2018-07-13 |
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| CN106381373A (en) * | 2016-11-25 | 2017-02-08 | 沈阳黎明航空发动机(集团)有限责任公司 | Correction method and device for plate type multilayered structure titanium alloy parts |
| CN112795766B (en) * | 2020-12-09 | 2022-05-27 | 北京星航机电装备有限公司 | Annealing and shape correcting method for high-temperature alloy welding part |
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| CN201825989U (en) * | 2010-09-30 | 2011-05-11 | 成都飞机工业（集团）有限责任公司 | Jig for controlling heat treatment deformation |
| CN103834883B (en) * | 2012-11-20 | 2016-02-10 | 北京航星机器制造公司 | A kind of thin-walled shape of a saddle aluminum alloy casting method for controlling heat treatment deformation |
| CN104109748B (en) * | 2014-06-27 | 2016-06-01 | 中航飞机股份有限公司西安飞机分公司 | Edge bar part method for controlling heat treatment deformation on a kind of aircraft |
| CN104109749B (en) * | 2014-06-27 | 2016-02-24 | 中航飞机股份有限公司西安飞机分公司 | A kind of aircraft slide rail class part method for controlling heat treatment deformation and control fixture |
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