A kind of drainage arrangement for friction stitch welding under water
Technical field
The invention belongs to Solid-State Welding technical field, more particularly, is related to a kind of new friction stitch welding local dry cavity
Drainage arrangement.
Background technology
Friction stitch welding is a kind of new solid phase connecting method.Friction stitch welding is the W M Thomas for having TWI, E D
Nicholas et al. was in invention in 1992.Nearly ten years Europe has put into substantial amounts of energy and has carried out basic grinding for correlation
Study carefully.Preliminary research has all been done to friction stitch welding by domestic aspect Beijing Institute of Petrochemical Technology, University Of Tianjin etc..
The cell orifice welding of friction stitch welding is referred to as Friction Hydro Pillar Processing (FHPP), and it is former
Reason is using consumable characteristic rod (can be referred to as stopper) under the conditions of certain pressure or pulling force, by driving means band
Dynamic stopper rotation, stopper declines in rotation, is that stopper contacts, rubs with consent (treating welding hole), forms plasticized metal, Ran Housai
Rod stalling, upset, complete welding.Used as the solder technology and recovery technique of a solid phase, friction welding (FW) has many advantages, such as ring
Protect, weldering speed is fast, can weld etc. in adverse circumstances.
The characteristics of due to friction stitch welding so that its weld under water and adverse circumstances under welding have very big advantage,
So the main direction of studying of friction stitch welding is under water, but the specific heat capacity of water is higher, can cause the appearance of hardened structure,
It is unfavorable for the bore process of seam welding process next stage, so grope to Underwater Welding local dry cavity, but due to its stopper
Consumptive material is to consume property, and with the carrying out of welding process, the height of drainage cover is continually changing, and this will cause drainage arrangement
Different from the drainage arrangement of the local dry cavity of general melting welding.The domestic and international research to friction stitch welding local dry underwater welding is also still
In the starting stage.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of friction stitch welding local draining device under water,
It is poor in order to solve friction stitch welding Underwater Welding welding quality, the problem welded under air ambient, the reality of design are built under water
Test equipment, experiment flow and Processing for Data Analysis in Physics.To reach more more preferable quality of weld joint, optimize Underwater Welding
Operation, expands the purpose of process parameters range.
The technical purpose of the present invention is achieved by following technical proposals:
A kind of drainage arrangement for friction stitch welding under water, including soft shell, flange, foam mat, passage, magnetic force
Sucker, backing plate, installing hole and jointing clip, wherein:
Soft shell, flange, foam mat and surface of the work constitute air chamber, and the draining for being substantially carried out welding region is close
Envelope, also including matched air delivery device.
The soft shell in conical tubular, in the top of whole device, the top central authorities of soft shell arrange by
Installing hole, the main tapping for connecting welding equipment is simultaneously sealed, and the lower surface of soft shell and flange connect, using connection
Clip is connected, and the soft shell is mainly made using silica gel or PVC material, and its height can disappearing with stopper
Consumption and pushing for main tapping and reduce, and have certain transparency to observe drainage situation and welding process.Soft shell,
Flange, foam mat and surface of the work constitute air chamber, are substantially carried out the draining sealing of welding region.
The flange is in toroidal, and upper surface is connected with the lower surface of soft shell, uniform along circumference of flange
Air inlet is set, and such as 4-6 air inlets using air inlet with draining, and maintain the shape of air chamber, keep the storage needed for air chamber
Tolerance.
The flange lower surface is connected with the foam mat of toroidal, to keep air-tightness, prevent aqueous reflux.
The magnetic suction disc is connected with backing plate, and the backing plate is connected to the bottom of flange, the magnetic suction disc and backing plate
Quantity is consistent, and the magnetic suction disc is uniformly distributed along circumference of flange direction, such as 4-6 magnetic suction discs;Magnetic suction disc can be with machine
Tool is adjusted, and its major function is to fix the position of drainage arrangement, prevents not caused enough the water of soft shell rigidity in drainage procedure
Cover is tumbled, or the vibrations in welding process cause drainage arrangement change in location etc..
The technical scheme of this method can be used for friction stitch welding welder equipment and various materials tested, in welding process
The formation of welding overlap and the observation of welding stability, friction stitch welding welder equipment is capable of achieving under water using the equipment of the present invention
The welding of optional position:Certain dimensioned sample is first according to, is assembled on welding machine main tapping, spring chuck is fixed, will
Soft shell is fixed on main tapping, by clamp connection, then flange and soft shell is connected, and is equally connected using clip
Connect, sponge is pasted in farad bottom, then assemble four connectors and be connected on magnetic stand, by magnetic-adsorption in workpiece table
Face.Connection gas circuit is installed after sample and can be carried out experiment.Simultaneously start-up frequency, before welding starts draining is given, so that
Horizontal plane is located under workpiece.Start friction stitch welding equipment, welding machine main shaft will be moved downward, soft shell short transverse is shunk,
Sample and mother metal absorption surface, welding process starts, and whole process can pass through transparent soft shell and observe.By the present invention
Technical scheme can obtain the joint of local dry underwater welding.
The present invention is for needed for the friction stitch welding under water Welding experiment of local dry cavity.It is folded that the experimental facilitiess are mainly used in friction
The welding of weldering local dry cavity, can observe to ensureing the smooth enforcement of local dry cavity and intuitively welding process very much, from
And the mechanism for more profoundly analyzing friction stitch welding is reached, optimize the effect of friction stitch welding technological parameter, the reason to friction stitch welding
There is important meaning by research aspect.
Description of the drawings
Fig. 1 is the structural representation of the drainage arrangement of the present invention, wherein 1 is soft shell, 2 is flange, and 3 is sponge liner
Pad, 4 is passage, and 5 is magnetic suction disc, and 6 is backing plate, and 7 is installing hole, and 8 is jointing clip.
Specific embodiment
Technical scheme is further illustrated with reference to specific embodiment.
As shown in Figure 1, the structural representation of drainage arrangement of the invention, wherein 1 is soft shell, 2 is flange, and 3 are
Foam mat, 4 is passage, and 5 is magnetic suction disc, and 6 is backing plate, and 7 is installing hole, and 8 is jointing clip.
Soft shell, flange, foam mat and surface of the work constitute air chamber, and the draining for being substantially carried out welding region is close
Envelope, also including matched air delivery device (not marking in figure).
The soft shell in conical tubular, in the top of whole device, the top central authorities of soft shell arrange by
Installing hole, the main tapping for connecting welding equipment is simultaneously sealed, and the lower surface of soft shell and flange connect, using connection
Clip is connected, and the soft shell is mainly made using silica gel or PVC material, and its height can disappearing with stopper
Consumption and pushing for main tapping and reduce, and have certain transparency to observe drainage situation and welding process.Soft shell,
Flange, foam mat and surface of the work constitute air chamber, are substantially carried out the draining sealing of welding region.
The flange is in toroidal, and upper surface is connected with the lower surface of soft shell, uniform along circumference of flange
Air inlet is set, and such as 4-6 air inlets using air inlet with draining, and maintain the shape of air chamber, keep the storage needed for air chamber
Tolerance.
The flange lower surface is connected with the foam mat of toroidal, to keep air-tightness, prevent aqueous reflux.
The magnetic suction disc is connected with backing plate, and the backing plate is connected to the bottom of flange, the magnetic suction disc and backing plate
Quantity is consistent, and the magnetic suction disc is uniformly distributed along circumference of flange direction, such as 4-6 magnetic suction discs;Magnetic suction disc can be with machine
Tool is adjusted, and its major function is to fix the position of drainage arrangement, prevents not caused enough the water of soft shell rigidity in drainage procedure
Cover is tumbled, or the vibrations in welding process cause drainage arrangement change in location etc..
When being tested, workpiece and stopper are installed first, then the soft shell of above-mentioned drainage arrangement are utilized clip
(will main tapping be arranged in installing hole, do not show in figure) be connected on main tapping, and soft shell and flange are connected by clip
Connect, magnetic suction disc is fixed on flange so as to be close to the surface of workpiece.Magnetic suction disc switch is opened, and the suction of magnetic will pass through
Backing plate is delivered to flange, compresses sponge so as to and surface of the work is in close contact, while start-up frequency, gives before welding starts
Draining, so that horizontal plane is located under workpiece.The big rotating speed of stopper and negative pressure will not be impacted to drainage effect.Startup rubs
Stitch welding equipment is wiped, welding machine main shaft will move downward, soft shell short transverse is shunk, sample and mother metal absorption surface were welded
Journey starts, and whole process can pass through transparent soft shell and observe.
Exemplary description is done to the present invention above, it should explanation, in the situation of the core without departing from the present invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent of creative work equal
Fall into protection scope of the present invention.