CN205660313U - Be used for through -hole work piece welded fluid pipeline - Google Patents

Abstract

The utility model discloses a be used for through -hole work piece welded fluid pipeline adopts this fluid pipeline to weld preceding heating dehumidification, take away the produced welding heat of welding process the work piece, realizes the quick cooling in weld joint zone territory and heat -affected zone, does benefit to to improve and welds efficiency, apply to as the work piece material when the nickel base alloys, be favorable to the grain refinement of welding seam and heat affected area, can make welded joint's plasticity and toughness improvement, improve its combination of mechanical properties, steam that the liquid that lets in produced little or do not have the influence to the welding quality influence, does benefit to and guarantees welding quality. The utility model provides an among the welding method of through -hole work piece, through in the welding is gone on, the welding is carried on precedingly or back is carried out in the welding, lets in in the through -hole to the work piece as heat -absorbing medium or as heating medium's liquid, can reach the purpose that improves welding efficiency, improvement welding quality.

Description

Fluid circuit for the welding of through hole workpiece

Technical field

This utility model relates to welding technology field, particularly relates to a kind of fluid circuit for the welding of through hole workpiece.

Background technology

The most in the world in the CRDM of third generation compacted clay liners, pneumatic shell assembly is by capsul The entirety formed by the way of welding with base, this structure can significantly reduce CRDM in-site installation Difficulty also improves bulk life time and the reliability of mechanism.

Weld the dissimilar metal pipeline butt welding mostly being austenitic stainless steel with nickel-base alloy, i.e. control rod more than and to drive In mechanism, the material of capsul is austenitic stainless steel 00Cr18Ni10N, and the material of base is Inconel-690 nickel-base alloy, Easily producing the defects such as fire check, pore, slag inclusion when being welded together by both materials, its reason is mainly due to Ni-based conjunction The linear expansion coefficient of gold is big (about 1.5 times of carbon steel), and thermal conductivity less (about 0.3 times of carbon steel) easily produces relatively during welding Big welding stress so that nickel-base alloy produces tearing tendency because of shrinkage stress effect during welding solidification.

For the welding of this type of weld seam, prior art is all from strictly controlling welding parameter (thermal weld stress, welding current Deng) from the point of view of and take measures, such as Authorization Notice No. is the utility model patent of CN102275030B: " austenite is not The butt welding method of rust steel and nickel-base alloy ", although also can solve mother metal and include the butt welding of nickel-base alloy is easily generated part Problem, but facts have proved these methods slow down at a temperature of all also existing between the road (layer) of weld seam and be difficult to control, welding quality not The serious problems such as stable, production efficiency is low so that the welding quality of such weld seam is difficult to be effectively ensured.

Utility model content

For in prior art set forth above, mother metal includes in the butt welding of nickel-base alloy, particularly dissimilar metal pair Connecing the problem that welding quality is unstable, production efficiency is low present in weldering, this utility model provides a kind of for through hole workpiece The fluid circuit of welding.

The fluid circuit for the welding of through hole workpiece that this utility model provides solves problem by techniques below main points: The fluid circuit welded for through hole workpiece, the butt welding of two workpiece being provided with through hole thereon of this fluid circuit, And the through hole of latter two workpiece of butt welding is opposite joining relation, described fluid circuit includes inlet pipeline and outlet conduit, described in enter Mouth pipeline and outlet conduit all include that pipeline section and plug, the plug on described inlet pipeline are fixed on the port of export of corresponding pipeline section； Plug on described outlet conduit is fixed on the entrance point of corresponding pipeline section；

In both inlet pipeline and outlet conduit, the pipeline section of at least one connects and has flow control valve, described flow Regulation valve flows through the uninterrupted of the fluid of corresponding pipeline section for regulation.

Concrete, in the butt welding of two through hole workpiece, as driven machine for third generation compacted clay liners control rod Pneumatic shell assembly in structure, when carrying out capsul and base welding, owing to during Nickel-based Alloy Welding, linear expansion coefficient is big, thermal conductivity Less, after weld seam welding, rate of cooling is slow, and the t8/5 time is long, and the crystal grain mutability of weld dimensions is thick, makes welding point Plasticity and toughness decline, comprehensive mechanical performance is deteriorated.It is CN102275030B at Authorization Notice No., entitled " austenite stainless The butt welding method of steel and nickel-base alloy " patent documentation in, in welding process, between road (layer), temperature is dependent on air ambient Natural cooling, not only rate of cooling is relatively slow, affects production operation efficiency, and the weld seam at high temperature time of staying is long, low melting point Metal eutectic thing and nonmetal eutectic thing (Ni-S, Ni-P) generate more, easily produce the defects such as HOT CRACK FOR WELDING P.

In above fluid circuit structure, the inlet pipeline of setting is used for being passed through liquid in the through hole of workpiece, going out of setting Mouth pipeline liquid in workpiece through-hole flows out workpiece, the plug that inlet pipeline and outlet conduit all include, is respectively used to import The connection of pipeline, outlet conduit and workpiece through-hole end, so, by this fluid circuit structure, can realize following welding scheme: Before two workpiece weld front position pairing, it is utilized respectively the plug on inlet pipeline and outlet conduit, it is achieved inlet tube, outlet The connection of pipe ends different from each workpiece respectively, after being passed through liquid, workpiece can be heated respectively by above liquid as thermal source, So, for workpiece highstrung to steam in the case of being heated, when being nickel-base alloy such as the material of workpiece, use liquid to work Part welds after heating again, can be prevented effectively from as under environment in the winter time, and the condensing water vapor being attached to workpiece welding region causes Gas hole defect occurs on weld seam, reaches beneficially to improve the purpose of welding quality；In like manner, weld front position at two workpiece to have matched After, also can connect inlet pipeline and outlet conduit respectively at the assembly two ends that two workpiece are formed, be passed through as thermal source During liquid, two workpiece are produced the technique effect simultaneously driving away steam.

As it has been described above, for during such as workpiece that material is nickel-base alloy, the sweating heat of nickel-base alloy scatters and disappears the direct shadow of speed Ring welding point and the comprehensive mechanical performance of heat affected area, therefore in the fluid circuit of arrangement above, by welding at two workpiece After completing or after two workpiece weldering front positions have been matched, connect inlet tube respectively at the assembly two ends of two workpiece formation Road and outlet conduit, after being passed through as the liquid of heat-absorbing medium, described liquid phase, for air cooling, can quickly take away sweating heat, So, can make to refine for the crystal grain if material is the workpiece of nickel-base alloy, beneficially weld dimensions, welding can be made The plasticity of joint and toughness improve, and improve its comprehensive mechanical performance.

More than use the form that plug realizes inlet pipeline and outlet conduit is connected with workpiece respectively, can be realized by plug When being passed through liquid in workpiece through-hole, it is to avoid described liquid is spilt by the end of workpiece and hinders welding operation, affects weld seam Region and the drying property etc. in heat-affected zone.

The flow control valve of arrangement above is passed through the size of fluid flow in workpiece through-hole for regulation, is particularly well-suited to adopt In the case of taking away welding heat with this fluid circuit, take away speed obtaining preferable sweating heat.

Further, for during such as workpiece that material is nickel-base alloy, owing to the impact of steam welding quality is relatively big, for keeping away Exempt from when being passed through the liquid as heat-absorbing medium in workpiece through-hole by fluid circuit, above liquid butt welded seam or heat affected area The inner side welding quality in territory impacts, can be by first arranging one bottom girth joint at pad, by bottom girth joint pair The outside of workpiece through-hole and bottom girth joint is further continued for after closing in the outside welding of bottom girth joint and is passed through as suction The liquid of thermal medium；Also the welded ends of workpiece can be processed into specific form, by the workpiece itself of pairing before weldering, hinder Liquid as heat-absorbing medium directly contacts with molten bath；Can also use after pairing before two workpiece welderings, by any one work In the through hole of part insert a sleeve, and make welding position between the two ends of described sleeve, i.e. the welding of two workpiece Connect end to be all sheathed on outside sleeve, by described sleeve, complete the isolation between the liquid as heat-absorbing medium and molten bath.

As the above fluid circuit further technical scheme for the welding of through hole workpiece:

As the specific implementation of described plug, described plug is circular cone shape, and plug is provided with through hole, plug The two ends of upper through hole lay respectively on the different end faces of this plug, and pipeline section is connected on one end that plug is relatively large in diameter, and pipeline section The through hole of pore and corresponding plug be opposite joining relation.In this programme, can be by work be first inserted in one end less for plug diameter In the through hole of part, along with plug continues deeper into the through hole of workpiece, both can be formed to rise and connect in succession, and this fluid circuit is connected to work On part, and complete the end seal of workpiece through-hole.Further, the most described end seal effect, on described plug also It is arranged with sealing ring, further, for further promoting described sealing effectiveness, one layer of rubber can be set in the side of plug Layer is as described sealing ring, such as a rubber sealing boot in circular cone shape sheathed on plug.

As plug another kind way of realization, described plug includes shrouding and many connecting bolts, and described shrouding is arranged Having the plate hole running through shrouding two ends, also include the first flange arranged around any one end of shrouding outer rim, described first flange is ring Shape, described plate hole is positioned at the inner side of the first flange, and described first flange is relative to the end face evagination of shrouding, and described connecting bolt is equal It is threadedly connected on the first flange, and the two ends of connecting bolt lay respectively at the inner side and outer side of the first flange；

Pipeline section is connected on the shrouding of plug, and the plate hole of the pore of pipeline section and shrouding is opposite joining relation, and with shrouding phase The first flange even and pipeline section lay respectively at the not homonymy of shrouding.

In this plug implementation, when completing plug and being connected with workpiece end, plate hole is provided with the one of the first flange End is near the end face of workpiece, so, so that it may make the end face of workpiece be positioned at the inner side of the first flange, by the bolt that is rotatably connected, When the outer surface of the end inside connecting bolt and workpiece interacts, plug can be realized on workpiece by connecting bolt Fixing, compared to a upper plug implementation, in this programme, plug is the most reliable with the annexation of workpiece.Further , for the benefit of plug and the sealing effectiveness of workpiece end when being passed through liquid, preferably arranged between shrouding and the end face of workpiece Sealing ring, due to this fluid circuit operationally, in workpiece through-hole intrinsic pressure not quite, install plug time, operator's hands Press end socket to the side of workpiece, remove in fastening bolt described by pressure, can close by between shrouding and workpiece Seal realizes good sealing effectiveness, so, in this case, preferably selects easily deformable and elastic good rubber seal.

When plug installed by workpiece, for ease of the location of plug Yu workpiece, also include the second flange arranged around plate hole, In the form of a ring, described second flange and the first flange are positioned at the homonymy of plate hole to described second flange.In this programme, shrouding and second convex Edge composition be similar to that hubbed clip-on-welding flange, i.e. by by second flange insert workpiece through hole in after, convex by second Mutually retrain with the hole wall of through hole on workpiece outside edge, reach the technique effect of plug and workpiece location.Further, for the benefit of The accuracy of location, is preferably set to circular cone shape by the profile of the second flange, and the free end of the i.e. second flange is smaller in size than the Two flanges is connected the size of end with shrouding.

In welding methods such as using manual welding, argonaut welding, SMAW, submerged-arc welding, two workpiece are welded Time, if after having spliced before the weldering of two workpiece can synchronous axial system, then can effectively facilitate welding, be beneficial to improve welding quality, therefore It is set to: on the pipeline section of inlet pipeline and outlet conduit, be provided with swivel joint.In this case, inlet pipeline and outlet conduit exist Rotatable to spliced workpiece while providing working fluid in the through hole of workpiece, above-mentioned technique effect can be realized.

As a kind of technical scheme that liquid is circulated utilization, also include water tank and pump, the position, suction side of described pump In the accommodation space of water tank, the outlet side of described pump is connected with the arrival end of inlet pipeline, the port of export of described outlet conduit It is positioned in the accommodation space of water tank.

For ease of controlling when workpiece is heated by liquid as heat carrier, the technical side of temperature of liquid can be controlled very well Case, is additionally provided with heater and temperature measurer in described water tank.

Meanwhile, the invention also discloses the welding method of a kind of through hole workpiece, the following steps carried out including order: S1: two respective welded ends of workpiece of processing respectively；S2: relative position before the welded ends of two workpiece is carried out weldering Fixing；S3: be welded to connect, also includes that fluid is passed through step, described fluid be passed through step be positioned at step S3 carry out before, enter Among row, carry out after in any one stage in three phases or several stage, described fluid is passed through step for using such as The fluid circuit of upper offer, is passed through liquid medium in the through hole of workpiece, and described liquid medium is used for taking away welding heat or right Workpiece heats.

In this welding method, by carrying out in welding, welding carry out before or after welding carries out, logical in the through hole of workpiece Enter as heat-absorbing medium or as adding the liquid of thermal medium, the heating and dehumidification before workpiece is welded can be realized, can realize quickly taking away Welding heat, it is achieved the quick cooling of workpiece, is different from traditional welding method, these heating means, and heating-up temperature is easy to control, with Time localized hyperthermia on workpiece can be avoided to affect the material property of workpiece；Employing the method heating and the method cool down, can be by same One pipeline realizes, and is conducive to reducing the quantity of auxiliary welding equipment；Use the method to cool down, improve workpiece welding efficiency While, for the lower material to water vapor sensitive that is heated, as when applying to the welding of pneumatic shell assembly, i.e. two workpiece are respectively For the material of one of them in capsul and base, pneumatic shell and base be nickel-base alloy or both be nickel-base alloy time, also Can be prevented effectively from or reduce the steam butt welded seam region and the impact of heat-affected zone material behavior produced by above liquid, be beneficial to Welding quality.

The further technical scheme of welding method as described through hole workpiece:

The implementation method of described step S1 is: process the groove of indent wherein on the welded ends of a workpiece, The welded ends of another workpiece processes the projection of evagination, and described groove and projection have following relation: complete After becoming step S2, in the described groove of described protruding embedding.

By arranging groove and projection before weldering, by under the constrained thermal stress between described groove and protruding side Between two workpiece, stagger degree in position, can reach the purpose controlling welding deformation, when applying to the welding of pneumatic shell assembly, When i.e. two workpiece are respectively capsul and base, use this programme, be beneficial to ensure the concentricity of gained pneumatic shell modular construction.

As a kind of form by two workpiece each welded ends, it is achieved the liquid that inside workpiece is passed through with The technical scheme of molten bath isolation, the position in protruding form respective with groove and each corresponding workpiece of leisure meets following relation: Described protruding embed in described groove after, the matching relationship of two workpiece make the through hole of two workpiece and position while welding every From.

Further, in described welding method, the through hole of workpiece is passed through liquid medium as taking away the cold of sweating heat But during agent, it is preferred to use below scheme completes welding: first welding connects the girth joint of two workpiece together, and described girth joint is real Isolation outside existing two workpiece through-holes and girth joint, is not passed through coolant in workpiece through-hole during this, treat that girth joint is certainly When being so cooled to remove surface welding slag, then in workpiece through-hole, it is passed through coolant, is then further continued for entering in the outside of girth joint Row welding obtains complete weld seam, so, due on workpiece the wall temperature of through hole be unlikely on rise so high, can avoid completely by cold But the steam welding quality that agent produces impacts.

Efficiently taking away welding heat by coolant, carrying out heating at expelling water vapour simultaneously before weldering by above-mentioned employing Reason, experiment proves: when using the welding that this welding method carries out pneumatic shell assembly, between nickel-base alloy and nickel-base alloy, stainless Weld between steel with nickel-base alloy, the defect of fire check does not all occur；Observed by metallographic detection and find weld dimensions Grain size be significantly less than the weld seam of natural cooling in air, the width of heat affected area also substantially in relatively air the welding of cooling connect Narrow, the comprehensive mechanical performance of welding point significantly improves, and welding production efficiency is substantially improved simultaneously.

This utility model has the advantages that

This utility model provide for through hole workpiece welding fluid circuit in, can use this fluid circuit that workpiece is entered Row welds front heating and dehumidification, takes away sweating heat produced by welding process, it is achieved welded seam area and the quick cooling in heat-affected zone, It is beneficial to improve welding efficiency；Apply to as workpiece material be nickel-base alloy time, as when applying to the welding of pneumatic shell assembly, I.e. two workpiece be respectively the material of one of them in capsul and base, pneumatic shell and base be nickel-base alloy or both be During nickel-base alloy so that the t8/5 time reduces, beneficially the crystal grain refinement of weld dimensions, can make the plasticity of welding point Improve with toughness, improve its comprehensive mechanical performance.

The flow control valve of arrangement above is passed through the size of fluid flow in workpiece through-hole for regulation, is particularly well-suited to adopt In the case of taking away welding heat with this fluid circuit, take away speed obtaining preferable sweating heat.

Meanwhile, this case is used to be positioned at weld seam for the docking of the workpiece being provided with through hole, the i.e. lacuna of liquid flowing Side, so, under the effect of sweating heat, the liquid that is passed through the steam welding quality impact produced is little or without impact, is beneficial to Ensure welding quality.

This utility model provide through hole workpiece welding method in, by carrying out in welding, welding carry out before or weldering After tapping into row, it is passed through as heat-absorbing medium or as adding the liquid of thermal medium in the through hole of workpiece, before can realizing workpiece weldering Heating and dehumidification, can realize quickly taking away welding heat, it is achieved the quick cooling of workpiece, be different from traditional welding method, originally add By the use of thermal means, heating-up temperature is easy to control, localized hyperthermia on workpiece can be avoided to affect the material property of workpiece simultaneously；Use the method Heating and the method cool down, and can be realized by same pipeline, are conducive to reducing the quantity of auxiliary welding equipment；Employing the method is entered Row cooling, while improving workpiece welding efficiency, for the lower material to water vapor sensitive that is heated, as applied to pneumatic shell group During the welding of part, it is Ni-based conjunction that i.e. two workpiece are respectively the material of one of them in capsul and base, pneumatic shell and base Gold or both are when being nickel-base alloy, also can be prevented effectively from or reduce the steam butt welded seam region produced by above liquid and hot shadow Ring the impact of region material characteristic, beneficially welding quality.

Accompanying drawing explanation

Fig. 1 is that the structure for one specific embodiment of fluid circuit of through hole workpiece welding described in the utility model is shown It is intended to；

Fig. 2 is described in the utility model in one specific embodiment of fluid circuit of through hole workpiece welding, plug Side view.

Numbering in figure is followed successively by: 1, flow control valve, and 2, swivel joint, 3, plug, 31, shrouding, the 32, first flange, 33, connecting bolt, 34, plate hole, the 35, second flange, 4, sealing ring, 5, workpiece, 6, pipeline section, 7, pump, 8, heater, 9, thermometric Instrument, 10, water tank.

Detailed description of the invention

Below in conjunction with embodiment, the utility model is described in further detail, but structure of the present utility model is not only It is limited to following example.

Embodiment 1:

As depicted in figs. 1 and 2, for the fluid circuit of through hole workpiece welding, this fluid circuit is with being provided with thereon The butt welding of two workpiece 5 of through hole, and the through hole of latter two workpiece 5 of butt welding is opposite joining relation, described fluid circuit includes Inlet pipeline and outlet conduit, described inlet pipeline and outlet conduit all include pipeline section 6 and plug 3, on described inlet pipeline Plug 3 is fixed on the port of export of corresponding pipeline section 6；Plug 3 on described outlet conduit is fixed on the entrance point of corresponding pipeline section 6；

In both inlet pipeline and outlet conduit, the pipeline section 6 of at least one connects and has flow control valve 1, described stream Adjustable valve 1 flows through the uninterrupted of the fluid of corresponding pipeline section for regulation.

Concrete, in the butt welding of two through hole workpiece 5, as driven machine for third generation compacted clay liners control rod Pneumatic shell assembly in structure, when carrying out capsul and base welding, owing to during Nickel-based Alloy Welding, linear expansion coefficient is big, thermal conductivity Less, after weld seam welding, rate of cooling is slow, and the t8/5 time is long, and the crystal grain mutability of weld dimensions is thick, makes welding point Plasticity and toughness decline, comprehensive mechanical performance is deteriorated.It is CN102275030B at Authorization Notice No., entitled " austenite stainless The butt welding method of steel and nickel-base alloy " patent documentation in, in welding process, between road (layer), temperature is dependent on air ambient Natural cooling, not only rate of cooling is relatively slow, affects production operation efficiency, and the weld seam at high temperature time of staying is long, low melting point Metal eutectic thing and nonmetal eutectic thing (Ni-S, Ni-P) generate more, easily produce the defects such as HOT CRACK FOR WELDING P.

In above fluid circuit structure, the inlet pipeline of setting is for being passed through liquid, going out of setting in the through hole of workpiece 5 Mouthful pipeline liquid in workpiece 5 through hole flows out workpiece 5, the plug 3 that inlet pipeline and outlet conduit all include, be respectively used to into Mouth pipeline, outlet conduit and the connection of workpiece 5 through hole end, so, by this fluid circuit structure, can realize the following side of welding Case: before two workpiece 5 weld front position pairing, the plug 3 being utilized respectively on inlet pipeline and outlet conduit, it is achieved import Pipe, outlet respectively from the connection of each different end of workpiece 5, after being passed through liquid, above liquid can be as thermal source, respectively to workpiece 5 Heat, so, for workpiece 5 highstrung to steam in the case of being heated, when being nickel-base alloy such as the material of workpiece 5, Use liquid to weld again after workpiece 5 is heated, can be prevented effectively from as, under environment in the winter time, being attached to workpiece 5 welding region Condensing water vapor cause gas hole defect occur on weld seam, reach beneficially to improve the purpose of welding quality；In like manner, at two workpiece 5 After weldering front position has been matched, also can connect inlet pipeline and outlet conduit respectively at the assembly two ends that two workpiece 5 are formed, When being passed through the liquid as thermal source, two workpiece 5 are produced the technique effect simultaneously driving away steam.

As it has been described above, for during such as workpiece 5 that material is nickel-base alloy, the sweating heat of nickel-base alloy scatters and disappears the direct shadow of speed Ring welding point and the comprehensive mechanical performance of heat affected area, therefore in the fluid circuit of arrangement above, by welding at two workpiece 5 After completing or welding after front position matched at two workpiece 5, the assembly two ends formed at two workpiece 5 connect import respectively Pipeline and outlet conduit, after being passed through as the liquid of heat-absorbing medium, described liquid phase, for air cooling, can quickly take away welding Heat, so, can make to refine for the crystal grain such as the workpiece 5 that material is nickel-base alloy, beneficially weld dimensions, can make The plasticity of welding point and toughness improve, and improve its comprehensive mechanical performance.

More than use the form that plug 3 realizes inlet pipeline and outlet conduit is connected with workpiece 5 respectively, plug 3 can be passed through Realize when being passed through liquid in workpiece 5 through hole, it is to avoid described liquid is spilt by the end of workpiece 5 and hinders welding operation, shadow Ring welded seam area and the drying property etc. in heat-affected zone.

The flow control valve 1 of arrangement above is passed through the size of fluid flow in workpiece 5 through hole for regulation, is particularly well-suited to In the case of using this fluid circuit to take away welding heat, take away speed obtaining preferable sweating heat.

Further, for during such as workpiece 5 that material is nickel-base alloy, owing to the impact of steam welding quality is relatively big, for Avoid when being passed through the liquid as heat-absorbing medium by fluid circuit in workpiece 5 through hole, above liquid butt welded seam or hot shadow The inner side welding quality ringing region impacts, can be by first arranging one bottom girth joint at pad, by bottom boxing Stitch and be further continued for after the outside of workpiece 5 through hole and bottom girth joint is closed in the outside welding of bottom girth joint and be passed through work Liquid for heat-absorbing medium；Also the welded ends of workpiece 5 can be processed into specific form, by the workpiece 5 of pairing before weldering Body, hinders the liquid as heat-absorbing medium directly to contact with molten bath；Can also use before two workpiece 5 are welded after pairing, by appointing Meaning one workpiece 5 through hole in insert a sleeve, and make welding position between the two ends of described sleeve, i.e. two works The welded ends of part 5 is all sheathed on outside sleeve, by described sleeve, completes between the liquid as heat-absorbing medium and molten bath Isolation.

Meanwhile, the present embodiment also discloses the welding method of a kind of through hole workpiece, the following steps carried out including order: S1: two respective welded ends of workpiece 5 of processing respectively；S2: carry out welding front phase para-position by the welded ends of two workpiece 5 Put fixing；S3: be welded to connect, also includes that fluid is passed through step, described fluid be passed through step be positioned at step S3 carry out before, Among carrying out, carry out after in any one stage in three phases or several stage, described fluid is passed through step for using Fluid circuit as provided above, is passed through liquid medium in the through hole of workpiece 5, described liquid medium be used for taking away welding heat or Workpiece 5 is heated.

In this welding method, by carrying out in welding, welding carry out before or welding carry out after, in the through hole of workpiece 5 It is passed through as heat-absorbing medium or as adding the liquid of thermal medium, the heating and dehumidification before workpiece 5 is welded can be realized, fast speed belt can be realized Walking welding heat, it is achieved the quick cooling of workpiece 5, be different from traditional welding method, these heating means, heating-up temperature is easy to control System, can avoid localized hyperthermia on workpiece 5 to affect the material property of workpiece 5 simultaneously；The method heating and the method is used to cool down, can Realized by same pipeline, be conducive to reducing the quantity of auxiliary welding equipment；Use the method to cool down, improve workpiece 5 While welding efficiency, for the lower material to water vapor sensitive that is heated, as when applying to the welding of pneumatic shell assembly, i.e. two Workpiece 5 is respectively capsul and base, in pneumatic shell and base the material of one of them be nickel-base alloy or both be Ni-based During alloy, also can be prevented effectively from or reduce the steam butt welded seam region produced by above liquid and heat-affected zone material behavior Impact, beneficially welding quality.

Embodiment 2:

As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1: as described plug 3 Specific implementation, described plug 3, in circular cone shape, plug 3 is provided with through hole, position respectively, the two ends of through hole on plug 3 On the different end faces of this plug 3, pipeline section 6 is connected on one end that plug 3 is relatively large in diameter, and the pore of pipeline section 6 is stifled with corresponding The through hole of 3 is opposite joining relation.In this programme, can by one end less for plug 3 diameter first being inserted in the through hole of workpiece 5, Along with plug 3 continues deeper into the through hole of workpiece 5, both can be formed to rise and connect in succession, are connected to by this fluid circuit on workpiece 5, and Complete the end seal of workpiece 5 through hole.

In the present embodiment, the most described end seal effect, described plug 3 is also arranged with sealing ring 4, further , for further promoting described sealing effectiveness, one layer of rubber layer can be set in the side of plug 3 as described sealing ring 4, Such as a rubber sealing boot in circular cone shape sheathed on plug 3.

Embodiment 3:

As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1: another kind of as plug 3 Way of realization, described plug 3 includes shrouding 31 and many connecting bolts 33, described shrouding 31 is provided through shrouding 31 two ends Plate hole 34, also include around any one end of shrouding 31 outer rim arrange the first flange 32, described first flange 32 is in the form of a ring, described Plate hole 34 is positioned at the inner side of the first flange 32, and described first flange 32 is relative to the end face evagination of shrouding 31, described connecting bolt 33 are all threadedly connected on the first flange 32, and the two ends of connecting bolt 33 lay respectively at the inner side and outer side of the first flange 32；

Pipeline section 6 is connected on the shrouding 31 of plug 3, and the plate hole 34 of the pore of pipeline section 6 and shrouding 31 is in opposite joining relation, and The first flange 32 being connected with shrouding 31 and pipeline section 6 lay respectively at the not homonymy of shrouding 31.

In this plug 3 implementation, when completing plug 3 and being connected with workpiece 5 end, plate hole 34 is provided with the first flange One end of 32 is near the end face of workpiece 5, so, so that it may make the end face of workpiece 5 be positioned at the inner side of the first flange 32, by rotating When the outer surface of connecting bolt 33, the end inside connecting bolt 33 and workpiece 5 interacts, can be by connecting bolt 33 Realize plug 3 fixing on workpiece 5, compared to upper plug 3 implementation, plug 3 and the connection of workpiece 5 in this programme Relation is the most reliable.

In the present embodiment, for the benefit of plug 3 and the sealing effectiveness of workpiece 5 end when being passed through liquid, preferably at shrouding 31 And sealing ring 4 is set between the end face of workpiece 5, due to this fluid circuit operationally, in workpiece 5 through hole intrinsic pressure not quite, When installing plug 3, operator press end socket with hands to the side of workpiece 5, remove described by pressure in fastening bolt 33, Good sealing effectiveness can be realized by the sealing ring 4 between shrouding 31 and workpiece 5, so, in this case, preferably select and be prone to Deformation and elastic good rubber seal 4.

When plug 3 installed by workpiece 5, for ease of the location of plug 3 with workpiece 5, also include the arranged around plate hole 34 Two flanges 35, in the form of a ring, described second flange 35 and the first flange 32 are positioned at the homonymy of plate hole 34 to described second flange 35.We In case, shrouding 31 and the second flange 35 composition are similar to that hubbed clip-on-welding flange, i.e. by the second flange 35 is inserted work After in the through hole of part 5, by mutually retraining with the hole wall of through hole on workpiece 5 outside the second flange 35, reach plug 3 and workpiece 5 The technique effect of location.Further, the accuracy for the benefit of positioned, preferably the profile of the second flange 35 is set to the frustum of a cone Shape, the free end of the i.e. second flange 35 is smaller in size than the second flange 35 and is connected the size of end with shrouding 31.

Embodiment 4:

This case is further qualified on the basis of embodiment 1 by the present embodiment, use manual welding, argonaut welding, When two workpiece 5 are welded by the welding method such as SMAW, submerged-arc welding, if two workpiece 5 can after having spliced before welding Synchronous axial system, then can effectively facilitate welding, be beneficial to improve welding quality, therefore be set to: inlet pipeline and the pipe of outlet conduit It is provided with swivel joint 2 in section 6.In this case, inlet pipeline and outlet conduit provide working fluid in the through hole to workpiece 5 While spliced workpiece 5 rotatable, above-mentioned technique effect can be realized.

As a kind of technical scheme that liquid is circulated utilization, also include water tank 10 and pump 7, the suction of described pump 7 End is positioned in the accommodation space of water tank 10, and the described outlet side of pump 7 is connected with the arrival end of inlet pipeline, described outlet conduit The port of export is positioned in the accommodation space of water tank 10.

For ease of controlling when workpiece 5 is heated by liquid as heat carrier, the technology of temperature of liquid can be controlled very well Scheme, is additionally provided with heater 8 and temperature measurer 9 in described water tank 10.

Embodiment 5:

This case is further qualified on the basis of embodiment 1 by the present embodiment, as the welding side of above through hole workpiece The further technical scheme of method:

The implementation method of described step S1 is: process the groove of indent wherein on the welded ends of a workpiece 5, The welded ends of another workpiece 5 processes the projection of evagination, and described groove and projection have following relation: complete After becoming step S2, in the described groove of described protruding embedding.

By arranging groove and projection before weldering, by under the constrained thermal stress between described groove and protruding side Between two workpiece 5, stagger degree in position, can reach the purpose controlling welding deformation, in the welding applying to pneumatic shell assembly Time, when i.e. two workpiece 5 are respectively capsul and base, use this programme, be beneficial to ensure the same of gained pneumatic shell modular construction Heart degree.

As a kind of form by two respective welded ends of workpiece 5, it is achieved the internal liquid being passed through of workpiece 5 With the technical scheme of molten bath isolation, the position in protruding form respective with groove and each corresponding workpiece of leisure 5 meets such as ShiShimonoseki System: after in the described groove of described protruding embedding, the matching relationship of two workpiece 5 makes through hole and the weld seam position of two workpiece 5 Put isolation.

Embodiment 6:

This case is further qualified on the basis of embodiment 5 by the present embodiment, in described welding method, at workpiece 5 Through hole is passed through liquid medium as when taking away the coolant of sweating heat, uses below scheme to complete welding: first welding is together Connecting the girth joint of two workpiece 5, described girth joint realizes the isolation outside two workpiece 5 through holes and girth joint, during this It is not passed through coolant, when girth joint naturally cools to remove surface welding slag, then in workpiece 5 through hole in workpiece 5 through hole It is passed through coolant, is then further continued for carrying out welding in the outside of girth joint obtaining complete weld seam, so, due to logical on workpiece 5 The wall temperature in hole rises so high on being unlikely to, and the steam welding quality produced by coolant can be avoided completely to impact.

Efficiently taking away welding heat by coolant, carrying out heating at expelling water vapour simultaneously before weldering by above-mentioned employing Reason, experiment proves: when using the welding that this welding method carries out pneumatic shell assembly, between nickel-base alloy and nickel-base alloy, stainless Weld between steel with nickel-base alloy, the defect of fire check does not all occur；Observed by metallographic detection and find weld dimensions Grain size be significantly less than the weld seam of natural cooling in air, the width of heat affected area also substantially in relatively air the welding of cooling connect Narrow, the comprehensive mechanical performance of welding point significantly improves, and welding production efficiency is substantially improved simultaneously.

Liquid medium described in the present embodiment is water.

Above content is to combine the further description that this utility model is made by concrete preferred implementation, it is impossible to recognize Fixed detailed description of the invention of the present utility model is confined to these explanations.Common skill for this utility model art For art personnel, other embodiments drawn under without departing from the technical solution of the utility model, should be included in this practicality In novel protection domain.

Claims (7)

1., for the fluid circuit of through hole workpiece welding, this fluid circuit uses two workpiece (5) being provided with through hole thereon Butt welding, and the through hole of latter two workpiece of butt welding (5) is opposite joining relation, it is characterised in that described fluid circuit include into Mouth pipeline and outlet conduit, described inlet pipeline and outlet conduit all include pipeline section (6) and plug (3), on described inlet pipeline Plug (3) be fixed on the port of export of corresponding pipeline section (6)；Plug (3) on described outlet conduit is fixed on corresponding pipeline section (6) Entrance point；

In both inlet pipeline and outlet conduit, the upper connection of the pipeline section (6) of at least one has flow control valve (1), described stream Adjustable valve (1) flows through the uninterrupted of the fluid of corresponding pipeline section (6) for regulation.

The most according to claim 1 for through hole workpiece welding fluid circuit, it is characterised in that described plug (3) in Circular cone shape, plug (3) is provided with through hole, and the two ends of the upper through hole of plug (3) lay respectively at the different end faces of this plug (3) On, pipeline section (6) is connected on one end that plug (3) is relatively large in diameter, and the through hole of the pore of pipeline section (6) and corresponding plug (3) in Opposite joining relation.

Fluid circuit for the welding of through hole workpiece the most according to claim 1, it is characterised in that described plug (3) wraps Include shrouding (31) and many connecting bolts (33), described shrouding (31) be provided through the plate hole (34) at shrouding (31) two ends, Also include around shrouding (31) the first flange (32) that arbitrarily one end outer rim is arranged, described first flange (32) in the form of a ring, described plate Hole (34) is positioned at the inner side of the first flange (32), and described first flange (32) is relative to the end face evagination of shrouding (31), described company Connecting bolt (33) is all threadedly connected on the first flange (32), and the two ends of connecting bolt (33) lay respectively at the first flange (32) Inner side and outer side；

Pipeline section (6) is connected on the shrouding (31) of plug (3), and the pore of pipeline section (6) with the plate hole of shrouding (31) (34) in right Connect relation, and the first flange (32) of being connected with shrouding (31) and pipeline section (6) lay respectively at the not homonymy of shrouding (31).

Fluid circuit for the welding of through hole workpiece the most according to claim 3, it is characterised in that also include around plate hole (34) the second flange (35) arranged, described second flange (35) in the form of a ring, described second flange (35) and the first flange (32) It is positioned at the homonymy of plate hole (34).

Fluid circuit for the welding of through hole workpiece the most according to claim 1, it is characterised in that inlet pipeline and outlet It is provided with swivel joint (2) on the pipeline section (6) of pipeline.

Fluid circuit for the welding of through hole workpiece the most according to claim 1, it is characterised in that also include water tank (10) And pump (7), the suction side of described pump (7) is positioned in the accommodation space of water tank (10), the outlet side of described pump (7) and inlet pipeline Arrival end be connected, the port of export of described outlet conduit is positioned in the accommodation space of water tank (10).

Fluid circuit for the welding of through hole workpiece the most according to claim 6, it is characterised in that in described water tank (10) It is additionally provided with heater (8) and temperature measurer (9).