CN104493357B - Mechanical load Diffusion Welding device - Google Patents
Mechanical load Diffusion Welding device Download PDFInfo
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- CN104493357B CN104493357B CN201410676974.1A CN201410676974A CN104493357B CN 104493357 B CN104493357 B CN 104493357B CN 201410676974 A CN201410676974 A CN 201410676974A CN 104493357 B CN104493357 B CN 104493357B
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- joint seat
- load transfer
- transfer fixture
- diffusion welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A kind of mechanical load Diffusion Welding device that the present invention proposes, it is desirable to provide a kind of simple in construction, easy and simple to handle, highly versatile, pressure is constant, it is not necessary to large-scale rises temperature regulating device and the mechanical load diffusion welding (DW) device of complicated parts retainer.The technical scheme is that: heating furnace (16) forms heating system by built-in high-frequency induction heating power heater, for being provided energy by weldering piece surface atoms permeating, the load transfer fixture (17) being arranged in heating furnace (16) passes through dowel steel (14), be connected to ball-joint seat (19) and under between ball-joint seat (13), gear driving pair (10) is by rotating adjusting handle (12) or trimming hand wheel (11), drive elevating screw (9), by load transfer fixture (17), the pulling force that loading system provides is converted into the pressure of part to be welded；The pulling force of loading system is converted to weld the pressure of face of weld by loading system by load transfer fixture.
Description
Technical field
The present invention relates to a kind of for connection between plasticity difference or fusing point and the of the same race and foreign material of heat proof material, multilayer material
Diffusion welding (DW) device, be specifically related to the mechanical load Diffusion Welding device of a kind of band load steering clamp.
Background technology
Along with the development of material science, new material continues to bring out.In production application, it is frequently encountered by the connectivity problem of dissimilar metal.
The method of welding dissimilar metal is more, mainly has ultrasonic bonding, melting welding, solid phase pressure weldering, melting welding-soldering and liquid phase transition weldering
Deng.The welding procedure of some profile complex thin-wall workpiece, because bonding area is big, weld strength requires height, it is achieved such welding
Technique generally uses Diffusion Welding.Diffusion Welding can not only complete the welding of same material, and can complete between foreign material
Welding, is a kind of solid phase connecting method obtaining integral joint.Its weld strength is several times of general Welding intensity.Expand
Scattered soldering set has: the microscopic structure of (1) Diffusion Bonded Joint is close or identical with mother metal with performance, there is not fusion defects；(2) welding
Temperature is low, and mother metal damage is little；(3) inside and multiple spot, large-area welding can be carried out；(4) Light deformation, little stress, high-accuracy；
(5) it is suitable between plasticity difference or fusing point and the of the same race and xenogenesis of heat proof material, multilayer material connecting；(6) surface preparation requires height；
(7) welding and non-cutting time are long；(8) equipment one-time investment is big, the welding characteristic that workpiece size is limited by equipment.Diffusion welding (DW)
Technique is the most complicated, and equipment volume is big.Welding between thin-wall part ectonexine to be completed, nature can produce relatively under the high temperature conditions
Big deformation, if horizontal positioned, under gravity, will produce ovalizing deflection；If being disposed vertically, bottom heap will be produced
Compressive strain.For improving weld strength, preventing the oxidation of solder side, the interlayer between inside and outside wall must evacuation or be passed through indifferent gas
Body carries out atmosphere protection.Therefore in welding, it is common that workpiece is arranged on special device and makes it unsettled and the most uniform
Rotate and control workpiece deformation in welding process.Again, heating rate and insulation are determined according to material performance at different temperatures
Time.Diffusion welding (DW) is under vacuum or inert ambient environment, is in close contact by two test specimens to be welded, is heated to less than solidus temperature
Degree (T=0.5-0.8Tm).Materials to be welded produces microplasticity rheology under high moderate pressure effect and reaches to be in close contact, and makes boundary
The counterdiffusion of atom phase or solid state reaction at face, produce atom combination thus form firm integral joint.Meanwhile, in temperature-rise period
Workpiece " heart table " temperature difference can not be too big, and furnace atmosphere can not be contaminated, to reduce oxidation and residual stress.Above-mentioned complexity
Technical process make firing equipment also become complicated.
Diffusion Welding must apply certain extruding force under diffusion welding (DW) temperature conditions on of the same race or welding dissimilar materials face,
The size of extruding force is different because of the difference of welding material.The localized contact plastic deformation of joint interface organizational structure interface, promotes oxygen
Change the broken decomposition of film.When contacting when reaching to wash one's face, occurring to spread between welding material atom, the oxide on interface is dissolved simultaneously
Absorbing, then recrystallized structure growth, crystal boundary moves, and sometimes occurs joining raw brilliant and intermetallic compound, through after a period of time
Constitute the welding point of firmly one.The formation of Diffusion Bonding Joint substantially can be divided into three phases, and the first stage is material list
The physical contact in face, preferably connects in order to two test specimens to be welded obtain, it is necessary to make them be close to be enough to set up metallic bond as far as possible
Distance within.The surface of the microcosmic injustice contacted with each other is under the effect of high temperature and pressure, and microscopic protrusions position can occur plasticity
Deformation, uneven contact surface can be rolled, and actual contact area constantly increases.Second stage is that contact interface is interatomic
Phase counterdiffusion, actual contact surface continues heating after being formed and plastic deformation can make the energy of lattice Atom and mobility increase,
The atom of connector area can be activated and migrate, original equilbrium position enter new equilbrium position, diffuse into one another,
The degree of depth connected gradually expands, and firm binder course is constantly formed, and the little space of part remains in crystal grain.Phase III is can
It is abutted against the formation of head.Recovery and recrystallization at high temperature can occur due to material, and this stage will eliminate remaining microcosmic discontinuity
And defect, the binder course that contact phase is formed gradually develops to volume direction, ultimately forms reliable jointing.Wherein weld
The hole that head is formed because of non-seam is the initial imperfection of joint, and hole Micro-v oid axially broadens along loading with increasing of cycle-index；
Hole extends and causes loaded area reduction is the main cause that joint fatigue lost efficacy.
Traditional Vacuum diffusion bonding furnace is designed with electrohydraulic servo system, and through development for many years, system structure is relative to one-tenth
Ripe, but still there are some intrinsic shortcomings, such as: vacuum heating system pressure apparatus adjust threshold values high and low pressure force value control accuracy poor,
There is certain pollution etc. in the hydraulic oil in electro-hydraulic device, therefore, electrohydraulic servo system can not meet novel Diffusion Welding to environment
Technology requirement.Diffusion Welding device provides stable and moderate pressure to soldered surface requirements, and the pressure between composition surface is to eliminate
Or minimizing surface microscopic is uneven, increase the direct contact surface area of material, to such an extent as to reach the essential condition of atomic distance, main
First stage to be affected.There is the suitable scope that needs in the pressure applied, excessive and too small be all unfavorable for carrying of strength of joint
High.If hypotony, not enough by the plastic deformation on weldering surface, physical contact surface atomic distance is more than the distance setting up metallic bond,
Between atom, repulsive force plays a leading role, and causes atoms permeating not enough, and on interface, the hole of residual is excessive and too much；Too high diffusion
Pressure can produce bigger surface plastic deformation, can make to be welded Surface Recrystallization temperature reduction, accelerates crystal boundary migration, also will make liquid
Too much, in joint, remaining liquid intermediate layer is very few for state metal extrusion, it is impossible to produce a certain degree of interaction (profit with mother metal
Wet, fill, dissolve, spread), reduce diffusion effect equally, cause joint performance to be deteriorated.Therefore, Diffusion Welding device carries
The pressure of confession will directly affect diffusion welding (DW) result.As pressurizeed with airbag aeration or adding backing plate pressurization, mould structure is complicated, and diffusion is even
If junction protects bad meeting to cause oxidation, affect bonding strength.
The pressing mechanism of diffusion welding (DW) typically has machinery (hydraulic pressure) formula to account for 65%, thermally expansive accounts for 11%, HIP (Hot
Isostatic Pressing) formula accounts for 24%.The pressing jig of traditional mechanical formula diffusion welding (DW) is typically by train wheel bridge, lower plate, die cavity
Body, guide pillar and nut composition.Pressure to strain guide pillar, thus drives upper and lower clamping plate to be applied to by tightening force by tightening nuts
It is soldered surface.It is disadvantageous in that, the pressure applied during prestrain, after pressure apparatus is heated together with soldering part, occurs
Thermal expansion, the pressure acting on soldered surface will decline, and cause being welded surface atom diffusion deficiency, and after welding, intensity reduces,
Even do not combine；If providing excessive precompression before heating, after adding thermal expansion, pressure does not simply fail to measure, and also can cause and be welded
Pipe fitting surface produces big plastic deformation, not only affects accessory size and is also possible to reduce weld strength.Physicochemical property difference is bigger
The diffusion of titanium alloy and copper alloy is connected in research and also runs into the biggest difficulty, the most polynary precision friction pays class tube-in-tube structure part (elder generation
Enter aero-engine Constant-Speed Unit) the most not yet succeed.Additionally, conventional diffusion welding equipment versatility is poor, cost is relatively
High.There is bulky, pressure and play that tune threshold values is high, be heated to metal molten warm mechanics temperature work in especially Vacuum diffusion bonding furnace
The problems such as cycle length, production efficiency are low, greasy dirt dye.
Summary of the invention
In order to solve the insufficient pressure that conventional diffusion welder causes and the shortcoming that cannot accurately control, mesh of the present invention because of heating
Be the weak point existed for prior art, it is provided that a kind of simple in construction, easy and simple to handle, highly versatile, pressure is constant,
Need not the mechanical load diffusion welding (DW) device of the large-scale parts retainer rising temperature regulating device and complexity.
The technical solution used in the present invention is: a kind of mechanical load Diffusion Welding device, including loading system, temperature-controlling system
With the load transfer fixture of offer welding pressure, loading system mainly includes connecting firmly before amplifying between lever 2 and pedestal 5 vertical
Post 18, rear column 3 and the elevating screw 9 rotated by gear driving pair 10, temperature-controlling system mainly includes that temperature-controlling system is main
Including being perpendicular to above pedestal 5, the heating furnace 16 connected firmly by fixing axle 15, it is characterised in that: heating furnace 16 is by interior
Put high-frequency induction heating power heater composition heating system, for being provided energy by weldering piece surface atoms permeating, be arranged on and add
Load transfer fixture in hot stove 16 17 by dowel steel 14, be connected to ball-joint seat 19 with under ball-joint seat 13
Between, gear driving pair 10, by rotating adjusting handle 12 or trimming hand wheel 11, drives elevating screw 9, passes through load transfer
The pulling force that loading system provides is converted into the pressure of part to be welded by fixture 17；Loading system will be loaded by load transfer fixture
The pulling force of system is converted to weld the pressure of face of weld.
Compared with existing diffusion welding (DW) device, the method have the advantages that
The present invention utilizes a kind of load transfer fixture that pulling force is converted into pressure to make diffusion welding (DW) apparatus structure simple, stable, is manufactured into
This is low, highly versatile, it is not necessary to the large-scale parts retainer rising temperature regulating device and complexity, easy and simple to handle.
The present invention uses gear driving pair 10 by rotating adjusting handle 12 or trimming hand wheel 11, drives elevating screw 9, logical
Cross load switch fixture 17 and the pulling force that loading system provides is converted into the pressure of part to be welded, to applying one between part to be welded
Fixed pressure so that realizing diffusion between piece surface to be welded and connect, this connection procedure material area is big, and the dwell time is long,
Keep the uniform contact connecting workpiece.In the temperature rise period, pressurization can make local surfaces boss be driven plain to the present invention, is equivalent to change
It is apt to surface roughness；The position oxide-film that Plastic Flow occurs simultaneously is able to Mechanical Crushing.Certain in the amount adding intermediate layer
In the case of, pressurization can also eliminate shrinkage porosite and the shrinkage cavity in isothermal solidification latter stage, makes the gap uniformity of docking workpiece, it is ensured that weld seam is each
Place's performance is consistent.
2. welding cost is low.Present invention only requires the heating of the welding region to soldering part, efficient energy-saving, welding effect is good,
Qualification rate is high.The present invention is by the defect at detection tabs, as cavity, field trash, residual gas etc. within a fitting is evaluated
The impact of atmosphere butt joint mechanical property, is observed diffusion junction joint microscopic structure.Result shows: junction is welded
Conjunction rate is relatively big, and up to 99.5%, minimum 88.89%.(1) weld seam connected is narrower, without cast sturcture, its metallurgy,
Mechanical property is essentially identical with matrix material；(2) weld edge is smoother, favourable to follow-up superplastic forming process；(3) hair
Base is easy to assembly, and welding is easily.
3. pressure stability in welding process.By levelling device, regulate suitable pressure, make the motion of liquid metals atom relatively
For freedom, and it is prone in the potential energy field that mother metal surface atom produces, form stable atomic arrangement and solidify, makes the tight of interface
Contact becomes relatively easy；Welding pressure can be greatly lowered, shorten weld interval.Suitably regulation pressure to broken oxide-film,
Improve the compactness of joint, it is to avoid the pressure caused because of the thermal expansion of soldering part and fixture is significantly decayed.Force value controlled and
Precision is high, and pressure precision reaches 0.5%.Under the parameters such as suitable temperature and weld interval, face of weld is without any defect.
Accompanying drawing explanation
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the organigram of mechanical load Diffusion Welding device of the present invention.
Fig. 2 is the organigram of Fig. 1 load transfer fixture.
In figure: 1. balance weight, 2. amplify lever, 3. rear column, 4. counterweight, 5. pedestal, 6. horizontal adjustment bolt, 7. stable
Counterweight, 8. front apron, 9. elevating screw, 10. gear driving pair, 11. trimming hand wheels, 12. adjusting handles, 13. times ball-joint
Seat, 14. dowel steels, 15. heaters fix axle, 16. heating furnaces, 17. load transfer fixtures, and 18. front columns are spherical on 19.
Connecting seat, 20. balanced pointers, 21. balance scales, 22. front fulcrum hooks, 23. balance fulcrums, 24. rear fulcrum hooks, 25. is long
Suspension rod, 26. dowel steel connecting pin bores, 27. upper junction plates, 28. clamp nuts, 29. guide posts, 30. lower platens, 31. top boards,
32. cavity, 33. lower connecting plates.
Detailed description of the invention
Refering to Fig. 1.In embodiment described below, mechanical load Diffusion Welding device mainly includes, loading system, control
Temperature system and the load transfer fixture of offer welding pressure.Temperature control heating system is mainly fixed axle 15, heating furnace by heater
16 and heating furnace displacement regulation adjustment ring composition, for by weldering piece surface atoms permeating provide energy.Loading system is mainly wrapped
Include and connect firmly in the front column 18 amplified between lever 2 and pedestal 5, rear column 3, the lifting that rotated by gear driving pair 10
Screw mandrel 9.The Main Function of load transfer fixture is the pressure that the pulling force that loading system provides is converted into part to be welded.Described load
Lotus switch fixture is arranged in heating furnace 16, and by dowel steel 14 be connected to ball-joint seat 19 with under ball-joint seat
Between 13, gear driving pair 10, by rotating adjusting handle 12, drives elevating screw 9, will by load transfer fixture 17
The pulling force that loading system provides is converted into the pressure of part to be welded.
Loading system, mainly by balance weight 1, amplifies lever 2, rear column 3, counterweight 4, pedestal 5, horizontal adjustment bolt 6,
Stablize counterweight 7, front apron 8, elevating screw 9, gear driving pair 10, trimming hand wheel 11, adjusting handle 12, under spherical company
Joint chair 13, dowel steel 14, load transfer fixture 17, front column 18 and upper ball-joint seat 19 form, and wherein, finely tune hands
Wheel 11 connects gear driving pair 10 by transverse plane on pedestal 5, and gear driving pair 10 connects elevating screw 9, elevating screw 9
By adjusting handle 12 coaxially connected under ball-joint seat 13, ball-joint seat 13 is connected to the lower end of dowel steel 14, power transmission
Bar 14, by heating furnace 16, connects load transfer fixture 17 and connects ball-joint seat 19 mutually, simultaneously by being arranged on loading
Universal joint in system and device is connected and amplifies lever 2, is positioned at the balance weight 1 outside loading system device by amplifying lever 2
Tail end be connected vertical rod connect pull-up counterweight 4.Front column 18 and rear column 3 are the agent structures of support equipment, are supported on pressure
Between system and device and pedestal 5.Pedestal 5 provides operating platform, bottom to be provided with the horizontal adjustment bolt of regulation complete equipment level
6, pedestal inner chamber is provided with stabilizing equipment center of gravity, it is to avoid because excessive load causes the stable counterweight 7 that equipment glances off.Pedestal 5
Front end front apron 8 is to indicate the isoparametric maintenance window of unit type, specification, tonnage.Elevating screw 9 passes through gear driving pair
10 trimming hand wheels 11 being connected and the common effect of the adjusting handle 12 being coaxially connected, regulate the load being positioned at heating furnace 16 center
Lotus switch fixture 17, to the pressure on part to be welded, rotates adjusting handle 12 simultaneously or trimming hand wheel 11 can drive elevating screw
9 rise or fall, then by under ball-joint seat 13, dowel steel 14, load transfer fixture 17 and upper ball-joint seat 19
It is delivered to the motion of screw mandrel amplify lever 2, is made by leverage balanced pointers 20 move downward or upward again, regulation
The indicating positions of balanced pointers 20, makes balanced pointers be positioned at the balance red line of balance scale 21.It is connected to dowel steel
Under on 14 upper and lowers, ball-joint seat 13 and upper ball-joint seat 19 use the ball-joint structure of self-aligning, it is ensured that power transmission
Bar 14 and the axiality of load transfer fixture 17, to provide high accuracy force value.The ball-joint structure of self-aligning is mainly propped up by ball
Support seat, steel ball, sphere countersink pins and outer shroud composition, when bearing external load effect, outer shroud drives sphere countersink pins to steel ball
Support seat with ball and apply pressure, by steel ball sphere-contact in ball supports seat and sphere counterbore, carry out self-aligning, from
And ensure that higher axiality.For exempting to use a large amount of counterweight to cause equipment insufficient rigidity, balance weight 1 is put by amplifying lever 2
The force value of big counterweight, the moment that lever 2 fulcrum rear portion equipment component produces is amplified in leveling.Counterweight 4 according to amplify lever is
Number is demarcated, when, after the load calculating applying, being combined according to calibrated weight load.Counterweight after combination is put
Putting on weight tray, now the action of gravity of counterweight is on rear dowel steel, and rear dowel steel drives and amplifies lever rear end decline, warp
Amplify lever leverage, amplify lever front end will rise, thus drive before dowel steel rise, because of under ball-joint seat consolidated
Being scheduled on elevating screw, can produce an axial tension between upper and lower dowel steel, loading system is carried by load transfer fixture 17
The pulling force of confession is converted into the pressure of part to be welded.
Heating furnace 16 is by the fixing connection of fixing axle 15 vertically connected firmly on transverse plane on pedestal 5, and heating furnace 16 passes through
Built-in high-frequency induction heating power heater composition heating system, for being provided energy by weldering piece surface atoms permeating.High frequency sense
Should heat compared with the industrial frequency electric resistance silk mode of heating that traditional diffusion welding machine uses, have noncontact heating, firing rate fast,
Heated perimeter is concentrated, and improves heat penetration, it is ensured that the uniform advantage of welding performance.Simultaneously because high frequency has the spy of kelvin effect
Point, is particularly suitable to welded tube.Firing rate is conducive to improving productivity ratio soon, is suitable for disperseing, single welding.
Pedestal 5 is provided with regulation process simple, the levelling device of the dowel steel 14 that is connected.Levelling device mainly includes. it is connected
The elevating screw 9 of gear driving pair 10 and the adjusting handle 12 being connected to elevating screw 9, and coaxially connected at elevating screw 9
Ball-joint seat 13 under on, under ball-joint seat 13 be connected load transfer fixture 17 by dowel steel 14, load transfer fixture
17 connect upper ball-joint seat 19 by heating furnace upper port, and upper ball-joint seat 19 links up with 22 with horizontal perpendicular through front fulcrum
Amplifying lever 2 to be connected, the balance scale 21 that amplification lever 2 tail end is connected is by rear fulcrum hook 24 and balanced pointers 20 and length
Suspension rod 25 is connected.Rotate adjusting handle 12 drive elevating screw 9 to rise or fall, then by under ball-joint seat 19,
The motion of elevating screw 9 is delivered to amplify lever 2 by pull bar, load transfer fixture 17 and upper ball-joint seat 19, passes through thick stick
Bar effect drives balanced pointers 20 to move downward or upward, until balanced pointers 20 points to balance at the balance red line of scale 21
?.
Refering to Fig. 2.Load transfer fixture mainly includes that two ends are shaped with the dowel steel 14 of connecting pin bores 26, is positioned in dowel steel
Portion's upper junction plate 27, lower connecting plate 33, clamp nut 28, guide post 29, lower platen 30, top board 31 and cavity 32,
Wherein, the guide post 29 being parallel to each other before and after three is connected with the pilot hole of lower platen 30 by upper junction plate 27, forms one
Individual connection assembly, another three guide posts being parallel to each other 29 are connected with the pilot hole of top board 31 by lower connecting plate 33, shape
Become another to connect assembly, between upper and lower pressing plate, after these two assembly interconnections, i.e. form a cavity 32.Upper and lower
Pressing plate is between upper and lower connecting plate, and the assembly direction of two groups of guide posts is contrary.The load transfer assembling part to be welded is pressed from both sides
Tool is connected with dowel steel, dowel steel again with under ball-joint seat 13 and upper ball-joint seat 19 be connected, constitute complete adding
Loading system.The Main Function of load transfer fixture is that the pulling force of loading system is converted into the pressure to face of weld, and it is the most former
Reason be when loading system by dowel steel to load transfer fixture apply tensile load time, will drive upper and lower connecting plate upwards and to
Lower motion, because guide post and connecting plate use clamp nut to be connected, can drive guide post to move together, thus drive presser motion,
Distance between two pressing plates will reduce, it is achieved soldering part is applied pressure.
Being embodied as of the present invention mainly comprises the steps of
1. prepare before weldering.Control face of weld roughness Ra≤0.8 μm, the depth of parallelism≤0.05, check piece surface flawless, trachoma
Or pore in groups, without the oxide layer caused because of machining.Use (2%-3%HF+ (4%-6%) HNO3Mix acid liquor clear
Wash by weldering surface (2-4min), part is put into equipped with in the ultrasonic washing instrument of acetone soln clean (15-20min has cleaned
Rapidly junction to be welded is fitted tightly by junction to be welded use blowing dry doubling after one-tenth.
2. part to be welded is installed.Face of weld pretreatment part after good is put into the type between lower platen 30 and top board 31
In cavity 32.
3. apply pressure.After installing load transfer fixture, first suitable counterweight is placed on counterweight seat, then rotates
Adjusting handle 12, is moved by the threaded engagement of handwheel with screw mandrel, drives elevating screw 9 to move downward, and screw mandrel drives lower ball
Shape connects seat, under ball-joint seat drive load transfer fixture and dowel steel again, thus drive amplification lever front end to decline, amplify
Lever rear end rises, pull-up counterweight seat, and pull-up counterweight 4, until the adjustment pointer 20 on counterweight seat points to balance mark
The center graduation mark of chi 21, completes pressure and applies.
4. heating.Fixing axle 15 is adjusted the position of heating furnace 16 by adjustment ring, until part to be welded is positioned at heating furnace
In the middle of the effective heating area of 16, close heating furnace 16, set heating-up temperature and begin to warm up.
5. unloading.After part to be welded completes welding and is cooled to room temperature, open heating furnace 16, unscrew load transfer fixture
Clamp nut 28 on 17, takes off guide post 29 and upper junction plate 27, lower connection 33, from top board 31 and lower platen 30
In cavity 32 in take out part to be welded, complete welding.
Multiple feature and advantage of the present invention are elaborated, including pulling force-pressure conversion device and adding
The 26S Proteasome Structure and Function details of loading system.For skilled professional and technical personnel, according to above-mentioned disclosed Diffusion Welding device
Can realize or use the present invention.Design multiple amendment according to the present invention those skilled in the art be will be apparent from.
Therefore the present invention is not intended to be limited to specific embodiment disclosed herein, and these multiple changes are without departing from appended claims
In the degree of spirit and scope, they belong in the scope of the invention.
Claims (9)
- null1. a mechanical load Diffusion Welding device，Including loading system、Temperature-controlling system and the load transfer fixture of offer welding pressure,Loading system mainly includes connecting firmly the front column (18) amplifying between lever (2) and pedestal (5)、Rear column (3) and the elevating screw (9) rotated by gear driving pair (10)，Temperature-controlling system mainly includes vertically connecting firmly pedestal (5) top,The heating furnace (16) connected firmly by fixing axle (15)，It is characterized in that: heating furnace (16) forms heating system by built-in high-frequency induction heating power heater，For being provided energy by weldering piece surface atoms permeating，The load transfer fixture (17) being arranged in heating furnace (16) passes through dowel steel (14)，Be connected to ball-joint seat (19) and under between ball-joint seat (13)，Gear driving pair (10) is by rotating adjusting handle (12) or trimming hand wheel (11)，Drive elevating screw (9)，By load transfer fixture (17), the pulling force that loading system provides is converted into the pressure of part to be welded；The pulling force of loading system is converted to weld the pressure of face of weld by loading system by load transfer fixture；nullLoad transfer fixture mainly includes that two ends are shaped with the dowel steel (14) of connecting pin bores (26)，It is positioned at upper junction plate in the middle part of dowel steel (27)、Lower connecting plate (33)、Clamp nut (28)、Guide post (29)、Lower platen (30)、Top board (31) and cavity (32)，Wherein，The guide post (29) being parallel to each other before and after three is connected with the pilot hole of lower platen (30) by upper junction plate (27)，Form one and connect assembly，Another three guide posts being parallel to each other (29) are connected with the pilot hole of top board (31) by lower connecting plate (33)，Form another and connect assembly，I.e. upper after these two assembly interconnections、A cavity (32) is formed between lower platen，Wherein，The guide post (29) being parallel to each other before and after three is connected with the pilot hole of lower platen (30) by upper junction plate (27)，Form one and connect assembly，Another three guide posts being parallel to each other (29) are connected with the pilot hole of top board (31) by lower connecting plate (33)，Form another and connect assembly，I.e. upper after these two assembly interconnections、A cavity (32) is formed between lower platen.
- 2. mechanical load Diffusion Welding device as claimed in claim 1, it is characterized in that: in loading system, trimming hand wheel (11) connects gear driving pair (10) by the upper transverse plane of pedestal (5), gear driving pair (10) connects elevating screw (9), elevating screw (9) by adjusting handle (12) coaxially connected under ball-joint seat (13), ball-joint seat (13) is connected to the lower end of dowel steel (14), dowel steel (14) passes through heating furnace (16), connect load transfer fixture (17) and connect ball-joint seat (19) mutually, simultaneously by the universal joint connected amplification lever (2) being arranged in loading system device.
- 3. mechanical load Diffusion Welding device as claimed in claim 2, it is characterised in that: it is positioned at the balance weight outside loading system device (1) by amplifying the vertical rod that is connected of lever (2) tail end and connects pull-up counterweight (4).
- 4. mechanical load Diffusion Welding device as claimed in claim 1, it is characterised in that: front column (18) and rear column (3) they are the agent structures of support equipment, are supported between pressure system device and pedestal (5).
- 5. mechanical load Diffusion Welding device as claimed in claim 1, it is characterized in that: pedestal (5) provides operating platform, bottom is provided with the horizontal adjustment bolt (6) of regulation complete equipment level, and pedestal inner chamber is provided with stabilizing equipment center of gravity, it is to avoid excessive load produces the stable counterweight (7) of deflection.
- 6. mechanical load Diffusion Welding device as claimed in claim 1, it is characterized in that: the trimming hand wheel (11) that elevating screw (9) is connected by gear driving pair (10) acts on the common of the adjusting handle (12) being coaxially connected, regulation is positioned at the load transfer fixture (17) at heating furnace (16) center to the pressure on part to be welded, ball-joint seat (13) under by, dowel steel (14), the motion of screw mandrel is delivered to amplify lever (2) by load transfer fixture (17) and upper ball-joint seat (19), balanced pointers (20) is driven to move by leverage, balanced pointers is made to be positioned at the balance of balance scale (21).
- 7. mechanical load Diffusion Welding device as claimed in claim 1, it is characterized in that: under being connected on dowel steel (14) upper and lower, ball-joint seat (13) and upper ball-joint seat (19) use the ball-joint structure of self-aligning, it is ensured that dowel steel (14) and the axiality of load transfer fixture (17).
- 8. mechanical load Diffusion Welding device as claimed in claim 7, it is characterized in that: the ball-joint structure of self-aligning is mainly supported seat, steel ball, sphere countersink pins and outer shroud by ball and forms, when bearing external load effect, outer shroud drives sphere countersink pins that steel ball and ball support seat applying pressure, by steel ball sphere-contact in ball supports seat and sphere counterbore, carry out self-aligning, it is ensured that axiality.
- null9. mechanical load Diffusion Welding device as claimed in claim 1，It is characterized in that: on pedestal (5), be provided with regulation process simple，The levelling device of connected dowel steel (14)，Levelling device mainly includes the elevating screw (9) of connected toothed wheel transmission 10 and is connected to the adjusting handle (12) of elevating screw (9),And coaxially connected on elevating screw (9) under ball-joint seat (13),Under ball-joint seat (13) by dowel steel (14) be connected load transfer fixture (17),Load transfer fixture (17) connects upper ball-joint seat (19) by heating furnace upper port,Upper ball-joint seat (19) is connected with horizontal magnification lever (2) perpendicular through front fulcrum hook (22),The balance scale (21) being connected with amplification lever (2) tail end is connected with balanced pointers (20) and long suspension rod (25) by rear fulcrum hook (24).
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669718A (en) * | 2005-03-23 | 2005-09-21 | 西北工业大学 | Pressurizing device and method for vacuum diffusion welding machine |
| CN102328153A (en) * | 2011-09-01 | 2012-01-25 | 河南科技大学 | Crimping diffusion welding process and clamp of aluminum or aluminum alloy and heterogeneous metal |
| CN102756205A (en) * | 2012-07-13 | 2012-10-31 | 安徽华东光电技术研究所 | Clamp for diffusion welding and using method thereof |
| CN204381653U (en) * | 2014-11-23 | 2015-06-10 | 中国人民解放军第五七一九工厂 | With different material Diffusion Welding pressue device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100681535B1 (en) * | 2005-12-14 | 2007-02-09 | 한국항공우주연구원 | Diffusion bonding and superplastic forming device using movable insert modules |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1669718A (en) * | 2005-03-23 | 2005-09-21 | 西北工业大学 | Pressurizing device and method for vacuum diffusion welding machine |
| CN102328153A (en) * | 2011-09-01 | 2012-01-25 | 河南科技大学 | Crimping diffusion welding process and clamp of aluminum or aluminum alloy and heterogeneous metal |
| CN102756205A (en) * | 2012-07-13 | 2012-10-31 | 安徽华东光电技术研究所 | Clamp for diffusion welding and using method thereof |
| CN204381653U (en) * | 2014-11-23 | 2015-06-10 | 中国人民解放军第五七一九工厂 | With different material Diffusion Welding pressue device |
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