CN1298478C - Method for connecting hard metals through successive built up welding - Google Patents
Method for connecting hard metals through successive built up welding Download PDFInfo
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- CN1298478C CN1298478C CNB2003101092619A CN200310109261A CN1298478C CN 1298478 C CN1298478 C CN 1298478C CN B2003101092619 A CNB2003101092619 A CN B2003101092619A CN 200310109261 A CN200310109261 A CN 200310109261A CN 1298478 C CN1298478 C CN 1298478C
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- grip box
- stick
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Abstract
The present invention relates to a hard alloy continuous build-up welding method and a device thereof. The device comprises a clamp box loaded with welding sticks, an outlet is arranged in the front of the clamp box, and an inlet is arranged at the back of the clamp box. When the first welding stick is melted to the tail part, a system sends out a signal to drive the second welding stick to be transferred out of the clamp box and be butted with the tail part of the first welding. After the second welding stick enters an argon gas chamber, the system sends out a signal to start an argon arc welder to ignite the second welding stick and the contact position. After the arcing current reaches a certain value, the current is switched off by a fusion short circuit. A magnetic thruster pushes a welding stick upwards for the second time to make a fore welding stick and a rear welding stick finish welding under the condition that the head and the tail positions of the welding sticks are melted. Then, the magnetic thruster returns to an original state waiting for the second automatic welding of the welding sticks made of hard alloy. Accordingly, the present invention realizes the automatic connection of hard alloy welding sticks in build-up welding.
Description
Technical field
The invention belongs to continuous built-up welding method of attachment of a kind of carbide alloy and device thereof, welding rod interconnection technique and mechanism when being specifically related to the continuous built-up welding of a kind of carbide alloy.
Background technology
Built-up welding is meant that deposited one deck is wear-resisting on carbon steel or end plain steel.Corrosion resistant thin metal layer makes the working surface of wearing and tearing reach original dimensional requirement.Do the service life that can have prolongation workpiece or equipment like this, fall end producing cost, raise labour productivity, rationally utilize advantages such as material.But the technique for overlaying difficulty is bigger, and it requires in advance workpiece to be given processing.Consider links such as hot weld after-baking and reprocessing, special requirement welding rod and matrix are complementary during built-up welding, the chemical analysis of overlay cladding and row can be met give provisioning request.Require the high compaction of overlay cladding and matrix bond face simultaneously; Uniformity; Planarization is to reduce the later process machining period.
As everyone knows, existing carbide electrode is because material is crisp hard; Poor toughness can not be curled, and the welding rod that can only be cut into certain-length can't be realized built-up welding continuously automatically when operation, can only be hand-manipulated, and this gap built-up welding operation, it is good to be difficult to reach top said overlay cladding and matrix compactness, and overlay cladding is even; Specification requirement such as smooth grade.Some workpiece must adopt automatic surfacing technology as the built-up welding on large-scale bundle roller surface, for satisfying the automatic surfacing specification requirement, can only adopt welding wire that flexible length do not limit as welding rod, the hardness of this flexible welding rod; The grade of wearability has just been fallen at the end greatly, and this differs very big with the layer serviceability that adopts the carbide electrode built-up welding.Therefore, invent a kind of carbide electrode that adopts limited length, also can realize automatically the technology and the mechanism of built-up welding continuously, have important practical significance and remarkable economic efficiency.
Summary of the invention
The object of the invention is to propose a special mechanism, makes to adopt carbide electrode also can realize built-up welding continuously automatically, has only the workpiece that adopts alloy electrode just can reach specification requirement to satisfy, and can realize built-up welding continuously automatically.
Carbide alloy automatic surfacing device of the present invention comprises the welding rod grip box at least, signal transducer, the magnetic thruster, welding rod clamps transport sector, argon gas chamber and an argon arc welding machine that connects outward, so that two carbide electrodes are coupled together automatically, thereby guarantee that carbide electrode carries out continuously reposefully in automatic surfacing.
Before the welding rod grip box outlet is arranged, after import is arranged, some welding rods wherein are housed.Grip box is fixed on above the flat board, when last root bead bar is melted to afterbody, can send signal, the second root bead bar is sent in grip box, and the afterbody of welding rod is gone up on the top, after entering the argon gas chamber, send signal again, start an argon arc welding machine, ignited in welding rod and contact position, after arc current reaches certain value, because of electric current is cut off in the fusing short circuit, the magnetic thruster is pushed to welding rod make a last welding rod and next welding rod locate to finish welding under the molten state at head and the tail for the second time, and the magnetic thruster is return reset condition then, waits for that capable more for the second time carbide electrode welds automatically.
Second purpose of the present invention is to propose the continuous built-up welding method of attachment of a kind of carbide alloy.
Described method is, some welding rods are placed in the welding rod grip box, grip box is fixed on above the flat board, before outlet is arranged, after import is arranged, when last root bead bar is melted to afterbody, can send signal, the second root bead bar is sent in grip box, and the top goes up the afterbody of welding rod, enter the argon gas chamber after, send signal again, start an argon arc welding machine, ignited in welding rod and contact position, after arc current reaches certain value, because of electric current is cut off in the fusing short circuit, the magnetic thruster is pushed to welding rod make a last welding rod and next welding rod locate to finish welding under the molten state at head and the tail for the second time, and the magnetic thruster is return reset condition then, waits for that capable more for the second time carbide electrode welds automatically.
Description of drawings
Fig. 1. structural scheme of mechanism of the present invention
Fig. 2. the electrical schematic diagram of signal transducer among the present invention
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
With reference to accompanying drawing 1, workpiece 30, welding gun 50, three big key elements when carbide electrode 40 is built-up welding, welding gun 50 is fixed on dull and stereotyped 70 by fixed chuck 60, welding rod 40 is clamped by passive clip wheel 80, the degree of tightness holddown spring 90 and the clamp nut 10 of passive clip wheel are regulated, initiatively clip wheel 2 and passive clip wheel 8 are formed electrode carrier clamping conveyor structure, initiatively clip wheel 20 is driven by drive motors 10, as long as welding gun 50 adjusted to give behind the certain angle to be started, organizes mechanical rotation workpiece 30 with another, start welding rod by drive motors 10 and send clip wheel to, built-up welding is just carried out smoothly.Problem is if the connection between two root bead bars before and after not solving, and built-up welding can only be carried out in the gap so, carry out automatic surfacing, and the steady connection of two root bead bars just becomes key problem in technology before and after resolving.
Earlier a large amount of welding rods are packed in the grip box 18 as cartridge clip, the shape of this grip box 18 can be pancake, also can be triangle.Grip box 18 front ends have positive stop 14, there is a welding rod outlet 22 below, there is a welding rod import 24 back upper place of grip box 18, the outside, below is connected with magnetic thruster 21, also there is a block 19 grip box 18 rear ends, the function of front and back block is that welding rod is arranged in box naturally in order, and box 18 is connected with dull and stereotyped 70, and the two is separated by insulation board 15 insulation.Initiatively clip wheel 20 is under stepper motor 10 drives, angular turn that can be on request, but can not move up and down, welding rod is finished clamping by passive clip wheel 80, the degree of tightness of passive clip wheel 80 comes holddown spring 90 to realize by twisted commentaries on classics screw rod 10 again, grip box 18 exits are connected with argon gas chamber 12 again, and argon gas enters the outer again argon arc welding machine (figure does not show) that connects in argon gas chamber 12 by argon gas hole 11.
Concrete job step is described below:
When the welding rod 40 that is welding normally runs to the exit of ignition tip 13, the signal transducer action, this welding rod 40 interrupts being connected with whole welding rod grip box 18, and 1 among Fig. 2 and 2 disconnects, and sends signal, and relay J 2 is started working.Make time relay J1 also pick up counting, send signal and make the startup of magnetic thruster also release welding rod grip boxs 18, and withstand the welding rod afterbody that is welding, enter together in the argon gas 12, cut off 5 on Fig. 2 simultaneously being used to connect welding rod 16; 6 connect, and have also cut off 5 '; 6 ' two connection.Make the work of J4 relay, J4 normally opened contact closure, it is external argon arc welding welding current closure, magnetic thruster 21 stops to advance at this moment, make welding rod 4 and after serve welding rod 16 head and the tail one intersegmental crack is arranged, this gap helps high-frequency arc strike input high-frequency pulse signal and sends into the argon gas electric arc that ignites from 11, two root bead bars 40 produce electric arc before and after making between 16 head and the tail, when electric current relay records electric current and reaches certain value, welding rod is located fusing and short circuit from beginning to end, send signal immediately and make magnetic thruster 21 starting for the second time, the second root bead bar 16 is pushed to last root bead bar 4 afterbodys once more and joined, two welding rods that are under the molten state are linked together from beginning to end.This moment, welding rod 4 continued to be fed into the place, molten bath between welding gun 50 and the workpiece 30 under active clip wheel 20 and 80 effects of passive clip wheel, and 7,8 two closures on the electric control theory figure (shown in Figure 2) are started working relay J 6 simultaneously.Time relay J2 is set at 2 seconds in advance, and the time one arrives, and cuts off the electricity supply immediately, makes all return to reset condition again, waits for that front and back two root bead bars weld automatically for the second time.
Compare prior art, the present invention has following obvious advantage:
1, make the hard alloy surfacing electrode of limited length connect into the welding rod of endless. Be any welding rod Can change the difficult point that automatic welding has solved a key over to. And owing to be that a root bead bar will be used Carried out again second connection when complete. So mechanism's volume is little.
2, be that the shape of jointing is not smoothly protruded, be not clipped in during automatic welding again in the clip wheel and can not Moving.
3, answer back to connection owing to adopted, material is squeezed and is difficult for cracking.
4, owing to controlled electric current and the amount of answering back to, the time is again extremely short, so to the shadow of wlding alloy composition Sound can be ignored.
Claims (6)
1. the continuous build-up welding apparatus of carbide alloy comprises argon gas chamber and an argon arc welding machine that connects at least outward, it is characterized in that it also comprises welding rod grip box [18], magnetic thruster [21], signal transducer, electrode carrier clamping conveyor structure.
2. the continuous build-up welding apparatus of carbide alloy as claimed in claim 1, it is characterized in that described grip box [18] front end has positive stop [14], there is a welding rod outlet [22] below, there is a welding rod import [24] back upper place of grip box, the outside, below is connected with magnetic thruster [21], and also there is a block [19] the box rear end, and the function of front and back block is that welding rod is arranged in box naturally in order, box [18] is connected with link plate [7], and the two is separated by insulation board [15] insulation.
3. the continuous build-up welding apparatus of carbide alloy as claimed in claim 1 or 2, the shape that it is characterized in that described grip box [18] can resemble from cartridge clip and become flat, also can be triangle.
4. the continuous build-up welding apparatus of carbide alloy as claimed in claim 1 or 2 is characterized in that described clamping conveyor structure is made of active clip wheel [20] and passive clip wheel [80].
5. the continuous build-up welding apparatus of carbide alloy as claimed in claim 4 is characterized in that holddown spring [90] is set on the described passive clip wheel 8, and is controlled by twisted commentaries on classics screw rod [10].
6. continuous built-up welding method of attachment of carbide alloy, comprise the welding rod grip box, signal transducer, the magnetic thruster, welding rod clamps transport sector, argon gas chamber and the system that the argon arc welding machine that connects outward constitutes, it is characterized in that: some welding rods place in the welding rod grip box, and grip box is fixed on above the flat board, and preceding have an outlet, after import is arranged, when last root bead bar is melted to afterbody, can send signal, the second root bead bar is sent in grip box, and the afterbody of welding rod is gone up on the top, after entering the argon gas chamber, send signal again, start an argon arc welding machine, ignited in welding rod and contact position, after arc current reached certain value, because of electric current is cut off in the fusing short circuit, the magnetic thruster was pushed to welding rod for the second time and is made a last welding rod and next welding rod locate to finish welding under the molten state at head and the tail, the magnetic thruster is return reset condition then, waits for that capable more for the second time carbide electrode welds automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101092619A CN1298478C (en) | 2003-12-10 | 2003-12-10 | Method for connecting hard metals through successive built up welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101092619A CN1298478C (en) | 2003-12-10 | 2003-12-10 | Method for connecting hard metals through successive built up welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1626305A CN1626305A (en) | 2005-06-15 |
| CN1298478C true CN1298478C (en) | 2007-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2003101092619A Expired - Fee Related CN1298478C (en) | 2003-12-10 | 2003-12-10 | Method for connecting hard metals through successive built up welding |
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| CN (1) | CN1298478C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014902B (en) * | 2014-06-17 | 2016-11-09 | 铁岭灵飞重型机器有限公司 | A kind of semi-automatic wear resistance electrode built-up welder |
| CN106392398B (en) * | 2016-12-06 | 2018-02-06 | 无锡市创恒机械有限公司 | A kind of cartridge clip plugs alternative |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066784U (en) * | 1989-12-26 | 1990-12-05 | 东方汽轮机厂 | Magnetic swing arc tungsten electrode argon arc automatic buiding-up welding machine |
| CN1168308A (en) * | 1996-06-14 | 1997-12-24 | 机械工业部哈尔滨焊接研究所 | Carbon-electrode argon plasma arc bead welding method |
| JP2000246436A (en) * | 1999-03-03 | 2000-09-12 | Babcock Hitachi Kk | Device for cladding by welding using tig arc |
| US6613999B2 (en) * | 2000-11-20 | 2003-09-02 | Union Tool Company | Method of joining a sintered hard alloy member to a stainless steel member and method of making a cutting tool therefrom |
| CN2717604Y (en) * | 2003-12-10 | 2005-08-17 | 上海工程技术大学 | Hard alloy continuous build up welding |
-
2003
- 2003-12-10 CN CNB2003101092619A patent/CN1298478C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2066784U (en) * | 1989-12-26 | 1990-12-05 | 东方汽轮机厂 | Magnetic swing arc tungsten electrode argon arc automatic buiding-up welding machine |
| CN1168308A (en) * | 1996-06-14 | 1997-12-24 | 机械工业部哈尔滨焊接研究所 | Carbon-electrode argon plasma arc bead welding method |
| JP2000246436A (en) * | 1999-03-03 | 2000-09-12 | Babcock Hitachi Kk | Device for cladding by welding using tig arc |
| US6613999B2 (en) * | 2000-11-20 | 2003-09-02 | Union Tool Company | Method of joining a sintered hard alloy member to a stainless steel member and method of making a cutting tool therefrom |
| CN2717604Y (en) * | 2003-12-10 | 2005-08-17 | 上海工程技术大学 | Hard alloy continuous build up welding |
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| CN1626305A (en) | 2005-06-15 |
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