CN103521908B - Section bar induction welding device and method - Google Patents
Section bar induction welding device and method Download PDFInfo
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- CN103521908B CN103521908B CN201310451455.0A CN201310451455A CN103521908B CN 103521908 B CN103521908 B CN 103521908B CN 201310451455 A CN201310451455 A CN 201310451455A CN 103521908 B CN103521908 B CN 103521908B
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- section bar
- caliper body
- induction welding
- installing plate
- welding device
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- 238000003466 welding Methods 0.000 title claims abstract description 108
- 230000006698 induction Effects 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 238000006073 displacement reaction Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- -1 rail Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- 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
- B23K13/00—Welding by high-frequency current heating
- B23K13/01—Welding by high-frequency current heating by induction heating
- B23K13/015—Butt welding
-
- 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
- B23K13/00—Welding by high-frequency current heating
- B23K13/08—Electric supply or control circuits therefor
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
-
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Induction Heating (AREA)
Abstract
A kind of section bar induction welding device and method, device comprises induction welding device, PLC control system, hydraulic system, cooling system and induction heating power, also has left and right installing plate and two subcoils.Method comprises the following steps: two section bars to be welded are realized location by the keeper of the central shaft bottom load of induction welding device; Clamping cylinder drives two groups of caliper body respectively around central axis, by section bar clamping to be welded also centering; The load coil of open-close type moves to the joint of section bar by auxiliary cylinder, two subcoils are pushed to and wrapped section bar and contact with electrode structure by positional cylinder; PLC control system starts load coil heating; During to predetermined welding temperature, close induction heating power, positional cylinder allows two subcoils separately, and the joint of section bar is applied the upset force set by upset oil cylinder in heating process always, and the end face weld of section bar is connected together; Jaw opens, and unclamps section bar.Automation mechanized operation of the present invention, efficiency are high.
Description
Technical field
The present invention relates to the solder technology of section bar, particularly about induction welding equipment and method.
Background technology
At present, the electric butt welding that the section bars such as common rail, reinforcing bar, steel pipe, U-steel use, induction welding, friction welding (FW) all belong to Pressure Welding category.Pressure Welding in welding process without the need to filling welding material, and low consumption environment protection.Friction welding (FW), by the restriction of spindle motor power, cannot weld heavy in section section bar; And the contact flash welding be widely used at present, all more difficult control of its lintel current density, contact resistance, the fire hole degree of depth, and easily generate the weld defects such as greyness, the quality of Welded Joints and life-span will produce considerable influence.On the other hand, flash welding monitoring process parameter is more, and the process debugging cycle is long, and affects by factors such as mother metal, machine condition, environment, and joint quality is relatively wayward.
Induction welding is the eddy current effect heating section bar utilized on alternating magnetic field-electric field induction medium section, section bar is melted, thus realizes a kind of method of welding.Eddy-current heating can be divided into according to the frequency difference of electric current used: high-frequency induction heating (100 kHz ~ 1000kHz), Frequency Induction Heating (1kHz ~ 10kHz) and line-frequency induction heating (50Hz).Intermediate frequency (1 ~ 10KHZ) heat penetration is 2-10mm, is generally used for the large axle class of diameter and the heating of big-and-middle forging section bar.Induction welding welds monitoring process parameter comparatively simply because of it, and joint quality is relatively easy to control.At present, market discloses some for can be used for the welder of induction welding, but the automaticity of ubiquity induction welding device is low, the problem that welding efficiency is not high.In addition, the quality of welding point also less stable.
Summary of the invention
The first object of the present invention is to provide a kind of automation, section bar induction welding device that efficiency is high.
The second object of the present invention is to provide a kind of automation, section bar induction welding method that efficiency is high.
In order to reach above-mentioned first object, technical scheme of the present invention is: a kind of section bar induction welding device, comprises induction welding device, PLC control system, hydraulic system, cooling system and induction heating power, induction welding device comprises first group of caliper body, second group of caliper body, central shaft, clamping cylinder, upset oil cylinder and jaw, wherein first group of caliper body and second group of caliper body are jointly hinged forms two on center shaft to pincerlike clamping device, clamping cylinder is all housed to drive first group of caliper body between the caliper body of often pair of pincerlike clamping device, second group of caliper body is respectively around central axis, first group of caliper body all realizes the relative motion of centrally axle axis direction by being connected with upset oil cylinder with second group of caliper body, the bottom of described first group of caliper body and second group of caliper body is equipped with jaw, is also provided with a left side between described first group of caliper body and second group of caliper body, right installing plate, a described left side, right installing plate is on center shaft hinged respectively by the first through hole, and left, right installing plate is nested with on corresponding upset cylinder piston rod respectively by the second through hole with being slidably matched, described left and right installing plate is all equipped with corresponding positional cylinder, described induction welding device also comprises the load coil of open-close type, the load coil of described open-close type comprises two subcoils, two subcoils respectively with corresponding positional cylinder load, two subcoils have the cavity adapted with section bar cross section to be welded after closing up, one of described left and right installing plate is fixed with electrode structure, electrode structure comprises first, second electrode, when two subcoils close up, first, second electrode described respectively with the upper contact of two subcoils, and the bottom of two subcoils contacts with each other, form galvanic circle, an auxiliary cylinder each caliper body of described second group of caliper body is all equipped with, the piston rod of two auxiliary cylinders respectively with corresponding left and right installing plate load, the bottom of described central shaft is fitted with keeper, also include oil circuit allocation block, described oil circuit allocation block is equipped with pressure sensor, described central shaft is provided with displacement transducer, and described left installing plate or right installing plate are provided with temperature sensor, and displacement transducer, temperature sensor and pressure sensor are all electrically connected with PLC control system.
Described electrode structure is positioned at below the first through hole on one of left and right installing plate to be located.
Described positional cylinder has four, and the upper and lower part of left and right installing plate is respectively equipped with one.
The piston rod of described two auxiliary cylinders is by guiding slide bar and corresponding left and right installing plate load, and guiding slide bar and second group of caliper body are slidably matched.
Described left and right installing plate is sliding combined with guide plate respectively, and the piston rod of guide plate and corresponding positional cylinder is fixed, and two subcoils are installed on corresponding guide plate respectively.
Described central shaft is also set with two lifting axle sleeves, described two lifting axle sleeves lay respectively between the caliper body of often pair of pincerlike clamping device, and a clip is also equipped with at the two ends of described central shaft respectively; Described lifting axle sleeve and clip are all fitted with keeper.
First electrode of described electrode structure and the second electrode connect the output of induction heating power respectively, and conducting copper is fixed between the first electrode and the second electrode by heat resistance insulating sheet intersection; There is the first, the 5th coil contact the upper end of a subcoil in two subcoils of load coil, there is the second, the 6th coil contact bottom, there is the 4th, the 8th coil contact the upper end of another subcoil, and there is the 3rd, the 7th coil contact bottom.
First electrode of described electrode structure and the second electrode connect the output of induction heating power respectively, between the first electrode and the second electrode, heat resistance insulating sheet are housed; The upper and lower end portion of a subcoil in two subcoils of load coil has first, second coil contact respectively, and the upper and lower end portion of another subcoil has the 4th respectively, tertiary coil contact.
In order to reach above-mentioned second object, technical scheme of the present invention is: a kind of section bar induction welding method adopting said apparatus, comprises the following steps:
A, two section bars to be welded are realized location by the keeper of the central shaft bottom load of induction welding device; Welder, hydraulic system, cooling system and induction heating power is answered to perform follow-up action by PLC control system Perceived control;
Two clamping cylinders on b, induction welding device drive two groups of caliper body respectively around central axis, make the jaw of two groups of caliper body bottoms respectively by two section bar clampings to be welded also centering;
Upset oil cylinder on c, induction welding device applies initial upset force and is adjacent to by the end face of two section bar joints to be welded, the load coil of open-close type moves to the joint of two section bars to be welded by auxiliary cylinder, positional cylinder pushes two of load coil subcoils to section bar to be welded, and the joint bag of two section bars to be welded is held together, first, second electrode contact of the electrode structure of load is gone up on the top of two subcoils respectively with one of left and right installing plate, and the bottom of two subcoils contacts with each other, form galvanic circle;
D, PLC control system start induction heating power load coil is energized, load coil obtain electric after the joint of section bar to be welded is heated; PLC control system Controlled cooling system cools load coil;
E, by the time load coil by the joint heating temperatures of two section bars to be welded to predetermined welding temperature time, PLC control system closes induction heating power, positional cylinder separates by two subcoils of load coil, upset oil cylinder performs PLC control system instruction, the joint of section bar to be welded is applied in heating process always the upset force set, thus the end face weld of two section bars to be welded is connected together, load coil is return initial bit by auxiliary cylinder, namely returns the side of second group of caliper body;
F, clamping cylinder drive two groups of caliper body that jaw is opened, and unclamp section bar, thus complete the induction welding of section bar.
In step c: two subcoils of load coil are installed on hinged left and right installing plate by corresponding positional cylinder respectively, auxiliary cylinder drive left and right installing plate centrally axle axis direction move, caliper body, when central axis, can drive left and right installing plate around central axis.
In step e: adopt the temperature of temperature sensor to section bar to be welded that induction welding device is installed to measure, measurement data delivers to PLC control system.
Described cooling system adopts water to cool load coil.
In described step e, described predetermined welding temperature is 850 DEG C ~ 1430 DEG C.
After adopting said structure and method, the present invention has following beneficial effect:
The present invention adopts PLC to control, by cooperatively interacting of the parts such as clamping cylinder, upset oil cylinder in the ingehious design of positional cylinder, auxiliary cylinder, left and right installing plate and load coil in induction welding device and induction welding device, achieve the clamping of section bar induction welding process, induction welding and upset, automaticity is high, decrease human factor impact, reduce labor operation intensity; The temperature, pressure and the displacement data that utilize temperature, pressure and displacement transducer collection to return, make PLC control whole welding process, technological parameter is simple, be easy to debugging, and do not affect by factors such as mother metal, machine condition, environment, quality of weld joint is stablized, and can improve stability of the welding quality; Induction butt welding is different from melting, without the need to adding packing material and protective gas, greatly reduces welding cost.The present invention is widely used in the welding of various section bar (such as I-steel, rail, steel pipe etc.).And the present invention also can heat-treat the heat treated section bar welding point of needs after welding, be equivalent to realize welding and heat treatment two functions in same equipment, greatly can improve welding and heat treatment efficiency, reduce equipment investment.
Accompanying drawing explanation
The present invention is further detailed explanation for the embodiment provided below in conjunction with accompanying drawing.
Fig. 1 is the structural principle block diagram of section bar induction welding device of the present invention;
Fig. 2 is schematic side view of the present invention;
Fig. 3 is main TV structure schematic diagram of the present invention, i.e. the left view of Fig. 2;
Fig. 4 is the sectional view along A-A line (after being rotated counterclockwise 90 °) of Fig. 2;
Fig. 5 is the syndeton schematic diagram of left and right installing plate in the present invention, load coil, positional cylinder;
Fig. 6 is the top view of Fig. 5;
Fig. 7,8 is folding moving structure schematic perspective views of the load coil in the present invention;
The top view of two subcoils section bar cephalad direction separately time when Fig. 9 is two circle loop;
The upward view of two subcoils section bar bottom direction separately time when Figure 10 is two circle loop;
When Figure 11 is single turn loop, two subcoils are separately time
section barthe top view of cephalad direction;
When Figure 12 is single turn loop, two subcoils are separately time
section barthe upward view of bottom direction.
Detailed description of the invention
As Fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, shown in 12, a kind of section bar induction welding device of the present invention, comprises induction welding device 1, PLC control system, hydraulic system, cooling system and induction heating power, induction welding device 1 comprises first group of caliper body 10, second group of caliper body 6, central shaft 12, clamping cylinder 3, upset oil cylinder 7 and jaw 11, wherein first group of caliper body 10 and second group of caliper body 6 are jointly hinged on central shaft 12 and form two to pincerlike clamping device, clamping cylinder 3 are all housed to drive first group of caliper body 10 between the caliper body of often pair of pincerlike clamping device, second group of caliper body 6 is rotated around central shaft 12 respectively, first group of caliper body 10 all realizes the relative motion of centrally axle 12 axis direction by being connected with upset oil cylinder 7 with second group of caliper body 6, the bottom of described first group of caliper body 10 and second group of caliper body 6 is equipped with jaw 11, is also provided with a left side between described first group of caliper body 10 and second group of caliper body 6, right installing plate 13, 14, a described left side, right installing plate 13, 14 respectively by the first through hole 13-1, 14-1 is hinged on central shaft 12, and left, right installing plate 13, 14 respectively by the second through hole 13-2, 14-2 is nested with on corresponding upset cylinder piston rod 7-1 with being slidably matched, described left and right installing plate 13,14 is all equipped with corresponding positional cylinder 15, described induction welding device 1 also comprises the load coil 8 of open-close type, the load coil 8 of described open-close type comprises two subcoils 8-a, 8-b, two subcoils 8-a, 8-b respectively with corresponding positional cylinder 15 load, two subcoils 8-a, 8-b have the cavity adapted with section bar 20 cross section to be welded after closing up, one of described left and right installing plate 13,14 is fixed with electrode structure 19, electrode structure 19 comprises first, second electrode 19-1,19-2, when two subcoils 8-a, 8-b close up, described first, second electrode 19-1,19-2 respectively with the upper contact of two subcoils 8-a, 8-b, and the bottom of two subcoils 8-a, 8-b contacts with each other, form galvanic circle, the piston rod each caliper body of described second group of caliper body 6 being all equipped with an auxiliary cylinder 9, two auxiliary cylinders 9 respectively with corresponding left and right installing plate 13,14 load, the bottom of described central shaft 12 is fitted with keeper 21, also include oil circuit allocation block 5, described oil circuit allocation block 5 is equipped with pressure sensor 25, described central shaft 12 is provided with displacement transducer 12-1, described left installing plate 13 or right installing plate 14 are provided with temperature sensor 4, and displacement transducer 12-1, temperature sensor 4 and pressure sensor 25 are all electrically connected with PLC control system.
Because left and right installing plate 13,14 is hinged on central shaft 12, and be nested with being slidably matched on corresponding upset cylinder piston rod 7-1, and corresponding positional cylinder 15 and auxiliary cylinder 9 are housed; Two subcoils 8-a, 8-b of load coil 8 respectively with corresponding positional cylinder 15 load, therefore, load coil 8 can move to the joint of two root type materials rapidly, exactly, heats section bar, thus can improve speed of welding and the efficiency of section bar further.
Induction welding device 1 can adopt high frequency induction welding connection device, also can adopt intermediate frequency or line-frequency induction welder, but supporting induction heating power is also with corresponding high frequency, intermediate frequency or line-frequency induction heating power supply.High frequency, intermediate frequency or line-frequency induction heating power supply can be selected according to the sectional dimension size reasonable of section bar.
Hydraulic system can be made up of hydraulic pump, hydraulic control valve, fluid pressure line etc.
Cooling system, as adopted water as cooling medium, can be made up of water pump, valve, cooling line etc.Certainly, cooling system also as required, can adopt other cooling medium than water.Keeper 21 is generally the block part for being pressed in section bar top to be welded.
Preferably, described central shaft 12 is also set with two lifting axle sleeves 23, described two lifting axle sleeves 23 lay respectively between the caliper body of often pair of pincerlike clamping device, and a clip 24 is also equipped with at the two ends of described central shaft 12 respectively; Described lifting axle sleeve 23 and clip 24 are all fitted with keeper 21.This is because when carrying out section bar 20 and welding, not only need to fix two root type materials 20, but also to ensure that two root type materials 20 align, that carries out accurately location also centering with regard to needs to two root type materials 20, and therefore the effect of 4 keepers 21 is under the cooperation with jaw 11, guarantee that two root type materials 20 are located and centering more accurately, more accurately and more quickly.Wherein 4 keepers 21 are one group between two, often organize keeper 21 and locate a root type material 20, have employed the principle that determine straight line at 2, thus, under the clamping of jaw 11 coordinates, can realize carrying out locating centering fast and accurately to two root type materials 20, simultaneously because 4 keepers 21 can ensure the centering location that section bar 20 is accurate more fast, induction welding device 1 directly falls to putting on section bar 20, can ensure that two root type materials 20 align, not need the adjustment doing other again.
As shown in Figure 5,6, locate below first through hole 13-1,14-1 that described electrode structure 19 is positioned on one of left and right installing plate 13,14.
As shown in Fig. 5,6,7,8, described positional cylinder 15 has four, and the upper and lower part of left and right installing plate 13,14 is respectively equipped with one.Like this, more steady when two subcoils 8-a, 8-b move, position is more accurate.
As shown in Fig. 4,7,8, the piston rod of described two auxiliary cylinders 9 is by guiding slide bar 18 and corresponding left and right installing plate 13,14 load, and guiding slide bar 18 and second group of caliper body 6 are slidably matched.Like this, more steady when left and right installing plate 13,14 moves, position is more accurate.
As shown in Fig. 5,6,7,8, described left and right installing plate 13,14 is sliding combined with guide plate 17 respectively, guide plate 17 is fixed with the piston rod of corresponding positional cylinder 15, and two subcoils 8-a, 8-b are installed on corresponding guide plate 17 respectively.This ensures that, when two subcoils 8-a, 8-b close up more accurate, not yielding.
As shown in Fig. 9,10; when load coil 8 adopts two circle loop; electrode structure 19 is: described first electrode 19-1 and the second electrode 19-2 connects the output of induction heating power respectively, and conducting copper 22 is fixed between the first electrode 19-1 and the second electrode 19-2 by heat resistance insulating sheet 27 intersection; The structure of load coil 8 is: there is the first, the 5th coil contact 8-1,8-5 the upper end of a subcoil 8-a in two subcoils 8-a, 8-b, there is the second, the 6th coil contact 8-2,8-6 bottom, there is the 4th, the 8th coil contact 8-4,8-8 the upper end of another subcoil 8-b, and there is the 3rd, the 7th coil contact 8-3,8-7 bottom.Certainly,
conductioncopper bar 22 is preferably zigzag, also can be other shapes such as step.
When two subcoils 8-a, 8-b close up, the top first of load coil 8, the 4th, the 5th, the 8th coil contact 8-1,8-4,8-5,8-8 contact with the first contact 22-1, the second contact 22-2 of the first electrode 19-1, conducting copper 22 and the second electrode 19-2 respectively; Bottom second, the 6th coil contact 8-2,8-6 of load coil 8 contact with the 3rd, the 7th coil contact 8-3,8-7 respectively, form two circle loop thus.
Connect induced-current for the first electrode 19-1 to export as positive direction, induced-current flows to: induced-current flows into from electrode 19-1, through the first contact 22-1 and the second contact 22-2, the 5th coil contact 8-5, the 6th coil contact 8-6, the 7th coil contact 8-7, the 8th coil contact 8-8 of the first coil contact 8-1, the second coil contact 8-2, tertiary coil contact 8-3, the 4th electrode contacts 8-4, conducting copper 22, last electric current flows out from the second electrode 19-2, forms two circle loop thus.
As shown in Figure 11,12, during single turn loop, electrode structure 19 is: described first electrode 19-1 and the second electrode 19-2 connects the output of induction heating power respectively, between the first electrode 19-1 and the second electrode 19-2, heat resistance insulating sheet 27 is housed; The structure of load coil 8 is: the upper and lower end portion of a subcoil 8-a in two subcoils 8-a, 8-b has first, second coil contact 8-1,8-2 respectively, has the 4th respectively, tertiary coil contact 8-4,8-3 in the upper and lower end portion of another subcoil 8-b.
When two subcoils 8-a, 8-b close up, top first, the 4th coil contact 8-1,8-4 of load coil 8 contact with first, second electrode 19-1,19-2 respectively; Coil contact, bottom second 8-2 of load coil 8 contacts with tertiary coil contact 8-3, forms single turn loop thus.
Connect induced-current for the first electrode 19-1 to export as positive direction, induced-current flows to: induced-current flows into from the first electrode 19-1, flow out from the second electrode 19-2 through the first coil contact 8-1, the second coil contact 8-2, tertiary coil contact 8-3, the 4th coil contact 8-4, last electric current, form single turn loop thus.
As shown in Fig. 1,2,3,4,5,6,7,8,9,10,11,12, a kind of section bar induction welding method adopting said apparatus of the present invention, comprises the following steps:
A, by two section bars 20 to be welded by the keeper 21 of the central shaft 12 bottom load of induction welding device 1 realize location; Welder 1, hydraulic system, cooling system and induction heating power is answered to perform follow-up action by PLC control system Perceived control;
Two clamping cylinders 3 on b, induction welding device 1 drive two groups of caliper body 10,6 to rotate around central shaft 12 respectively, two section bars 20 to be welded are clamped by the jaw 11 of two groups of caliper body 10,6 bottom respectively and centering;
C, upset oil cylinder 7 on induction welding device 1 applies initial upset force and is adjacent to by the end face of two section bar 20 joints to be welded, the load coil 8 of open-close type moves to the joint of two section bars 20 to be welded by auxiliary cylinder 9, positional cylinder 15 is by two of load coil 8 subcoil 8-a, 8-b pushes section bar 20 to be welded to, and the joint bag of two section bars 20 to be welded is held together, two subcoil 8-a, the top of 8-b respectively with a left side, right installing plate 13, first of the electrode structure 19 of one of 14 upper loads, second electrode 19-1, 19-2 contacts, and two subcoil 8-a, the bottom of 8-b contacts with each other, form galvanic circle,
D, PLC control system start induction heating power and are energized to load coil 8, load coil 8 electric after the joint of section bar 20 to be welded is heated; PLC control system Controlled cooling system carries out water cooling to load coil 8;
E, by the time load coil 8 by the joint heating temperatures of two section bars 20 to be welded to predetermined welding temperature time, PLC control system closes induction heating power, positional cylinder 15 allows two of load coil 8 subcoils 8-a, 8-b divide out, upset oil cylinder 7 performs PLC control system instruction, the joint of section bar 20 to be welded is applied in heating process always the upset force set, thus the end face weld of two section bars 20 to be welded is connected together, load coil 8 is return initial bit by auxiliary cylinder 9, namely returns the side of second group of caliper body 6;
F, clamping cylinder 3 drive two groups of caliper body 10,6 that jaw 11 is opened, and unclamp section bar 20, thus complete the induction welding of section bar.
In step c: two subcoils 8-a, 8-b of load coil 8 are installed on hinged left and right installing plate 13,14 by corresponding positional cylinder 15 respectively, auxiliary cylinder 9 drive left and right installing plate 13,14 centrally axle 12 axis direction move, caliper body, when central shaft 12 rotates, can drive left and right installing plate 13,14 to rotate around central shaft 12.
In step e: adopt the temperature of temperature sensor 4 to section bar 20 to be welded that induction welding device 1 is installed to measure, measurement data delivers to PLC control system.
Described cooling system adopts water to cool load coil 8.Certainly, other cooling medium also can be adopted to cool.
In described step e, described predetermined welding temperature is 850 DEG C ~ 1430 DEG C.
As shown in Figure 1, 2, 3, section bar induction welding device of the present invention have employed the induction welding technology of Automatic Control.Induction welding device 1, as the equipment of whole equipment, directly completes the various actions such as the clamping position to sectional material joint, induction welding, upset.
PLC control system is the control centre of whole equipment, except Perceived control answers welder 1 to complete above-mentioned various actions, guarantee that induction welding device 1 completes the automatic welding of section bar and realizes outside the feedback of Control Welding Process, but also hydraulic control system, cooling system, induction heating power perform follow-up action.Cooling system adopts external water circulation in welding process, makes water by load coil 8 hollow copper core, avoids load coil 8 to produce superheating phenomenon.Displacement transducer, pressure sensor are gathered various displacement in section bar welding process and pressure data respectively and feed back output after being calculated by PLC control system, thus realize the various actions of induction welding device 1.Temperature sensor 4 gathers the real time temperature of section bar joint, feeds back to PLC control system after reaching design temperature, thus closes or start induction heating power.
As shown in Fig. 1,2,3,4,5,6,7,8,9,10,11,12, the course of work of section bar induction welding device of the present invention is as follows:
When the present invention uses, first induction heating power is accessed power source also i.e. the interchange out-put supply of diesel generating set or the enough electric network source of capacity, then by clamping cylinder 3, two section bars 20 to be welded are clamped and automatic centering, upset oil cylinder 7 applies initial upset force and the welding end surface of two section bars 20 to be welded is adjacent to, the load coil 8 of open-close type is pushed into the joint of two section bars 20 to be welded by auxiliary cylinder 9, positional cylinder 15 realizes the closed clamping of load coil 8, and the welding point of two section bars 20 to be welded wraps by whole load coil 8 completely.PLC control system starts induction heating power, load coil 8 is energized, thus the joint of two section bars 20 to be welded is heated, Controlled cooling system carries out water cooling to load coil 8 simultaneously, the action of hydraulic control system retaining clip locking oil cylinder 3 and upset oil cylinder 7.Treat that the connector temperature of two section bars 20 to be welded is heated to predetermined welding temperature by load coil 8, PLC control system closes induction heating power, controlling positional cylinder 15 makes two of load coil 8 subcoils 8-a, 8-b open fast, and order upset oil cylinder 7 applies setting upset force, the end face of two section bars 20 combines, and load coil 8 is return initial bit by auxiliary cylinder 9.In whole welding process, two section bars 20 to be welded remain fixing, and two end face weld to be welded are connected together, and are reached the object of welding by the diffusion between metallic atom.
Claims (13)
1. a section bar induction welding device, comprises induction welding device (1), PLC control system, hydraulic system, cooling system and induction heating power, it is characterized in that:
A, induction welding device (1) comprises first group of caliper body (10), second group of caliper body (6), central shaft (12), clamping cylinder (3), upset oil cylinder (7) and jaw (11), wherein first group of caliper body (10) and second group of caliper body (6) are hinged on the upper formation two of central shaft (12) jointly to pincerlike clamping device, clamping cylinder (3) is all housed to drive first group of caliper body (10) between the caliper body of often pair of pincerlike clamping device, second group of caliper body (6) is rotated around central shaft (12) respectively, first group of caliper body (10) all realizes the relative motion of centrally axle (12) axis direction by being connected with upset oil cylinder (7) with second group of caliper body (6), the bottom of described first group of caliper body (10) and second group of caliper body (6) is equipped with jaw (11),
B, between described first group of caliper body (10) and second group of caliper body (6), be also provided with left and right installing plate (13,14), described left and right installing plate (13,14) is hinged on central shaft (12) respectively by the first through hole (13-1,14-1), and left and right installing plate (13,14) is nested with on corresponding upset cylinder piston rod (7-1) respectively by the second through hole (13-2,14-2) with being slidably matched;
(13,14) are all equipped with corresponding positional cylinder (15) for c, described left and right installing plate;
D, described induction welding device (1) also comprise the load coil (8) of open-close type, the load coil (8) of described open-close type comprises two subcoils (8-a, 8-b), two subcoils (8-a, 8-b) respectively with corresponding positional cylinder (15) load, two subcoils (8-a, 8-b) have the cavity adapted with section bar to be welded (20) cross section after closing up;
One of e, described left and right installing plate (13,14) are fixed with electrode structure (19), electrode structure (19) comprises first, second electrode (19-1,19-2), when two subcoils (8-a, 8-b) are closed up, described first, second electrode (19-1,19-2) respectively with the upper contact of two subcoils (8-a, 8-b), and the bottom of two subcoils (8-a, 8-b) contacts with each other, form galvanic circle;
Each caliper body of f, described second group of caliper body (6) is all equipped with an auxiliary cylinder (9), the piston rod of two auxiliary cylinders (9) respectively with corresponding left and right installing plate (13,14) load;
The bottom of g, described central shaft (12) is fitted with keeper (21);
H, also include oil circuit allocation block (5), described oil circuit allocation block (5) is equipped with pressure sensor (25), described central shaft (12) is provided with displacement transducer (12-1), described left installing plate (13) or right installing plate (14) are provided with temperature sensor (4), and displacement transducer (12-1), temperature sensor (4) and pressure sensor (25) are all electrically connected with PLC control system.
2. section bar induction welding device according to claim 1, is characterized in that: described electrode structure (19) is positioned at the first through hole (13-1,14-1) below place on one of left and right installing plate (13,14).
3. section bar induction welding device according to claim 1, is characterized in that: described positional cylinder (15) has four, the upper and lower part of left and right installing plate (13,14) is respectively equipped with one.
4. section bar induction welding device according to claim 1, it is characterized in that: the piston rod of described two auxiliary cylinders (9) is by guiding slide bar (18) and corresponding left and right installing plate (13,14) load, and guiding slide bar (18) and second group of caliper body (6) are slidably matched.
5. section bar induction welding device according to claim 1, it is characterized in that: (13,14) are sliding combined with guide plate (17) to described left and right installing plate respectively, guide plate (17) is fixed with the piston rod of corresponding positional cylinder (15), and two subcoils (8-a, 8-b) are installed on corresponding guide plate (17) respectively.
6. section bar induction welding device according to claim 1, it is characterized in that: described central shaft (12) is also set with two lifting axle sleeves (23), described two lifting axle sleeves (23) lay respectively between the caliper body of often pair of pincerlike clamping device, and a clip (24) is also equipped with at the two ends of described central shaft (12) respectively; Described lifting axle sleeve (23) and clip (24) are all fitted with keeper (21).
7. section bar induction welding device according to claim 1; it is characterized in that: first electrode (19-1) of described electrode structure (19) and the second electrode (19-2) connect the output of induction heating power respectively, conducting copper (22) is fixed between the first electrode (19-1) and the second electrode (19-2) by heat resistance insulating sheet (27) intersection; There is the first, the 5th coil contact (8-1,8-5) upper end of a subcoil (8-a) in two subcoils (8-a, 8-b) of load coil (8), there is the second, the 6th coil contact (8-2,8-6) bottom, there is the 4th, the 8th coil contact (8-4,8-8) upper end of another subcoil (8-b), and there is the 3rd, the 7th coil contact (8-3,8-7) bottom.
8. section bar induction welding device according to claim 1; it is characterized in that: first electrode (19-1) of described electrode structure (19) and the second electrode (19-2) connect the output of induction heating power respectively, and heat resistance insulating sheet (27) is housed between the first electrode (19-1) and the second electrode (19-2); The upper and lower end portion of a subcoil (8-a) in two subcoils (8-a, 8-b) of load coil (8) has first, second coil contact (8-1,8-2) respectively, and the upper and lower end portion of another subcoil (8-b) has the 4th respectively, tertiary coil contact (8-4,8-3).
9. adopt a section bar induction welding method for one of claim 1 ~ 8 described device, it is characterized in that: comprise the following steps:
A, two section bars to be welded (20) are realized location by the keeper (21) of central shaft (12) the bottom load of induction welding device (1); Welder (1), hydraulic system, cooling system and induction heating power is answered to perform follow-up action by PLC control system Perceived control;
Two clamping cylinders (3) on b, induction welding device (1) drive two groups of caliper body (10,6) to rotate around central shaft (12) respectively, make the jaw (11) of two groups of caliper body (10,6) bottom respectively by two section bar to be welded (20) clampings also centering;
C, upset oil cylinder (7) on induction welding device (1) applies initial upset force and is adjacent to by the end face of two section bar to be welded (20) joints, the load coil (8) of open-close type moves to the joint of two section bars to be welded (20) by auxiliary cylinder (9), positional cylinder (15) is by two subcoil (8-a of load coil (8), 8-b) push section bar to be welded (20) to, and the joint bag of two section bars to be welded (20) is held together, two subcoil (8-a, top 8-b) respectively with a left side, right installing plate (13, 14) one of upper load electrode structure (19) first, second electrode (19-1, 19-2) contact, and two subcoil (8-a, bottom 8-b) contacts with each other, form galvanic circle,
D, PLC control system start induction heating power to load coil (8) energising, load coil (8) electric after the joint of section bar to be welded (20) is heated; PLC control system Controlled cooling system cools load coil (8);
E, by the time load coil (8) by the joint heating temperatures of two section bars to be welded (20) to predetermined welding temperature time, PLC control system closes induction heating power, positional cylinder (15) allows two subcoil (8-a of load coil (8), 8-b) separately, upset oil cylinder (7) performs PLC control system instruction, the joint of section bar to be welded (20) is applied in heating process always the upset force set, thus the end face weld of two section bars to be welded (20) is connected together, load coil (8) is return initial bit by auxiliary cylinder (9), namely the side of second group of caliper body (6) is return,
F, clamping cylinder (3) drive two groups of caliper body (10,6) that jaw (11) is opened, and unclamp section bar (20), thus complete the induction welding of section bar.
10. section bar induction welding method according to claim 9, it is characterized in that: in step c: two subcoils (8-a, 8-b) of load coil (8) are installed on hinged left and right installing plate (13,14) by corresponding positional cylinder (15) respectively, auxiliary cylinder (9) drive left and right installing plate (13,14) centrally axle (12) axis direction move, caliper body, when central shaft (12) rotates, can drive left and right installing plate (13,14) to rotate around central shaft (12).
11. section bar induction welding methods according to claim 9, it is characterized in that: in step e: adopt the upper temperature of temperature sensor (4) to section bar to be welded (20) joint of installing of induction welding device (1) to measure, measurement data delivers to PLC control system.
12. section bar induction welding methods according to claim 9, is characterized in that: described cooling system adopts water to cool load coil (8).
13. section bar induction welding methods according to claim 9, is characterized in that: in described step e, described predetermined welding temperature is 850 DEG C ~ 1430 DEG C.
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| EP3153304B1 (en) * | 2015-10-05 | 2019-12-11 | Tetra Laval Holdings & Finance S.A. | A welding head |
| CN107671403B (en) * | 2017-10-20 | 2023-05-26 | 中国铁道科学研究院金属及化学研究所 | Quick pressure-maintaining convex-pushing direct-current railway steel rail flash butt welding machine |
| CN110346812B (en) * | 2018-04-08 | 2024-06-18 | 吉林启星铝业有限公司 | Pre-welding preassembly detection method and system for high-speed train body profile |
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| FR2399299A1 (en) * | 1977-08-05 | 1979-03-02 | Tocco Stel | METHOD AND DEVICE FOR BUTT WELDING BY INDUCTION OF METAL PARTS, ESPECIALLY OF IRREGULAR SECTION |
| JPH10175080A (en) * | 1996-12-13 | 1998-06-30 | Yasuo Shirokura | Method for joining bar-shaped body |
| PE7399A1 (en) * | 1997-02-04 | 1999-02-23 | Shell Int Research | METHOD AND DEVICE FOR JOINING TUBES OF OIL FIELDS |
| CN2518634Y (en) * | 2002-04-28 | 2002-10-30 | 山东中实股份有限公司 | Instantaneous liquid phase diffusion welding machine |
| CN200954574Y (en) * | 2006-10-11 | 2007-10-03 | 湖北凯乐新材料科技股份有限公司 | High-frequency inductive welding apparatus |
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