CN1048206C - Gas protective welding mould repair machine with micropulsed rotating consumable electrode - Google Patents
Gas protective welding mould repair machine with micropulsed rotating consumable electrode Download PDFInfo
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- CN1048206C CN1048206C CN 97116951 CN97116951A CN1048206C CN 1048206 C CN1048206 C CN 1048206C CN 97116951 CN97116951 CN 97116951 CN 97116951 A CN97116951 A CN 97116951A CN 1048206 C CN1048206 C CN 1048206C
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Abstract
The present invention relates to a mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode, which is composed of a power supply device, an air supply device and a rotary electrode welding gun, wherein the control circuit of the power supply device comprises a voltage adjusting device, a rectification filtering circuit, a charging input control circuit, an energy storing pressure boost circuit, a discharging output control circuit, a pulse output loop and an operating frequency of triggering pulse setting and logical control circuit which controls charging input and discharging output. The mold repairing machine adopts micro pulse current which generates electric arc and electric spark between the fusible electrode and workpiece to repair the local defect on the surface of a mold, and has the advantages of simple structure, easy operation and high work efficiency.
Description
The present invention relates to a kind of at the blemish of the part maintenance of equipment and the using method thereof of repairing in addition of heat treated precision optical machinery; exactly; relate to a kind of micropulse rotation consumable electrode inert gas-shielded arc welding the mould repairing machine and manipulate method, the metal plied timber that belongs to melting carries out the equipment of arc surfacing and manipulates the method and technology field.
The metal tool and mould, as a kind of heat treated Precision Machinery Elements, usually require its surface that very high hardness and roughness are arranged, also very high to the required precision of geometry, size, and also the working surface of finished product mould has the defective of pinprick size also never to allow.But in production, use, little and the shallow blemish of various area that causes because of fair wear and tear or other reasons can appear inevitably, this defective is scrapped as the mould that involves great expense that will make that can not finely solve, and economic loss is considerable.
Usually adopt built-up welding to carry out the skin patching of tool and mould at present, present technique for overlaying subject matter is will import very big heat to the mould sectional repair, causes thermal stress big, be easy to generate crackle, perhaps cause the whole workpiece after the built-up welding that the annealing phenomenon is arranged, make it hardness and descend reduction of service life.In addition, also to recover the precision and the hardness on its original size, shape, surface, just can reuse usually after repairing the blemish of mould class Precision Machinery Elements now again through grinding machine processing and heat treatment again.Whole repair technology is very time-consuming, and economic benefit is very low.
To also have a kind of welding method now be the employing introduced as Chinese patent application CN85106067 " melting electrodes type of arc welding machine with pulsed current " to contain inert gas is that the gas of main component is protected weldment; and the weldingvoltage of weldment continuous feeding welding wire and butt welding machine output controlled, so that welding wire carries out the transition to " inert gas shielding metal impulse welding connection " on the weldment with spray pattern under the condition of pulse welding current.
This welding machine can be controlled the output voltage operating mode in its welding process, makes the welding arc quite stable that becomes, and might realize satisfied welding.But the control circuit of this welding machine is extremely complicated.Not only used hardware devices such as microprocessor, memory, also needed software, and in control procedure, will constantly carry out digital-to-analogue conversion, made this welding procedure be difficult to popularization and application according to mathematical model establishment more complicated.And the pulse current dutycycle that this welding machine adopts is generally greater than 20%, and its average current is generally tens～hundreds of ampere, and is very big to the hot input quantity of workpiece, generally is used for the welding of structural member, also needs subsequent handling after the welding usually.So this welding machine platform is repaired tool and mould, just must carry out subsequent handlings such as machined and heat treatment at postwelding, effect is very undesirable.
The inert gas-shielded arc welding mould repairing machine that the purpose of this invention is to provide a kind of novel device that the Precision Machinery Elements blemish is repaired-micropulse rotation consumable electrode; this device can be directly used in the surface local defective of patcher's mould; and generally do not need subsequent techniques such as grinding and heat treatment; improve work efficiency, shorten process time, good in economic efficiency; and; control circuit is quite simple, and it is easily convenient to adjust control, is a kind of new welder with popularization and application prospect.
Another kind of purpose of the present invention provides a kind of using method of above-mentioned novel device, the method for manipulating of the inert gas-shielded arc welding mould repairing machine of the rotation of micropulse just consumable electrode.
Equipment of the present invention is achieved in that and includes supply unit, feeder and rotating electrode type welding gun, and wherein feeder is by the inert gas steel cylinder, once press instrument, pressure regulator valve, secondary to press instrument, flowmeter and air delivering pipeline to be formed; It is characterized in that: wherein supply unit is a rectangular box, control circuit in the casing be by the regulator that is linked in sequence, current rectifying and wave filtering circuit, charging input control circuit, energy storage booster circuit, discharge output control circuit, impulse output circuit with and output be connected to charging input control circuit and discharge output circuit respectively, the operating frequency setting and the logic control circuit that are respectively applied for the trigger impulse of control charging input, discharge output are formed; The rotating electrode type welding gun is then by rifle formula shell and be installed in air chamber, the small-sized chuck of buncher in the housing, inert gas and be clipped in the meltability electrode in the middle of the chuck and the anodal input of pulse power contact, inert gas input jack and the motor start switch that is positioned on the shell formed.
Wherein the electric capacity of energy storage booster circuit can be three, and its capacity is respectively 33 μ F, 60 μ F and 100 μ F.
Wherein operating frequency is provided with circuit and is made of time base circuit, and its operating frequency range is 10-1000HZ.
Wherein the air chamber shell wall of rotating electrode type welding gun front end nonmetallic materials is connected with the welding gun shell by screw thread, and the diameter of this shell wall center through hole should be greater than the diameter of meltability electrode; The anodal input of the pulse power on welding gun shell contact constitutes electric path through spring, carbon brush, conducting ring, chuck and meltability electrode, and the meltability electrode is connected with the pulse voltage positive pole of supply unit output.
Wherein supply unit also is provided with the rotating speed adjustment control circuit of the buncher of rotating electrode type welding gun.
Equipment using method of the present invention is such:
One, at first correctly connect gas circuit, circuit and conscientiously check it, wherein the output voltage binding post of circuit arrangement is anodal is connected with welding gun, and its negative pole is connected with workpiece to be repaired, and welding gun also is connected with socket by cable plug with supply unit; It is firm that wiring everywhere connects, and pipeline, screw-driving put in place;
Two, then wait to repair the surface treatment of workpiece: burr, salient point, oxide layer, the fatigue layer polishing that will wait to repair the position with file, steel brush or emery cloth are clean, clean with gasoline, cleaning agent and acetone and remove greasy dirt, the fresh metal covering of exposing surface;
Three, select the material of fusible electrode (benefit material) by the specification requirement of waiting to repair workpiece,, selected electrode (benefit material) is also carried out surface treatment: remove rust staining and remove surface and oil contaminant by waiting to repair the electrode (benefit material) that the part surface configuration is prepared respective diameters; And with the meltability electrode clamping that cleans up in the welding gun chuck, its extension can not be long or too short;
Four, carry out the weld deposit repairing operation:
(1) turns on the power switch, and select suitable storage capacitor amount; This moment, power supply indicator was bright, and each several parts such as voltmeter show normal;
(2) select operating frequency; Clockwise rotate the frequency knob, and from the digital frequency meter reading, operating frequency commonly used is between 100～280HZ;
(3) regulate inert gas flow; Open the inert gas steel cylinder earlier, can demonstrate steel cylinder air pressure, regulate secondary again and press meter switch, press instrument to indicate its output pressure value should be between 0.15-0.2Mpa by secondary from once pressing instrument;
(4) regulate output voltage; Clockwise rotate the voltage-regulation button, make output voltage between 35～40V;
(5) regulate the welding gun electrode rotating speed, regulate its rotating speed according to the different materials of workpiece and electrode
(6) place the gas skirt made from nonmetallic materials on workpiece welding surface, be provided with and Surface Flaw sizableness hole in the middle of this gas skirt;
(7) carry out the weld deposit repairing operation: open gas flow valve earlier, make inert gas flow at 0.4～0.6m
3/ hour between, with the electrode that rotating with the workpiece inclination angle be 15～45 ° mode near workpiece position to be repaired, make it to be in and seemingly contact contactless state with workpiece, pass through arc discharge, electrode material fusion and transition deposited to wait to repair the surface, carry out built-up welding successively; Every repairing built-up welding one deck all should in time check and use steel brush flat file cleaning smooth, continues built-up welding then, carries out so repeatedly, up to defective part is mended, and should suitably leave allowance;
(8) the welding operation is finished, the order shutdown: close the inert gas flow metered valve earlier, again the voltage button is fallen back on the end counterclockwise, treat discharge off, close power switch again, close inert gas steel cylinder main valve at last.
The surface treatment of repairing workpiece for the treatment of in the above-mentioned using method mainly is applicable to carbon steel, steel alloy and aluminium alloy class material; Should be after the face of waiting to repair watch clean for cast iron class workpiece to be repaired, carry out again that electricity is clean, activation or baking handle, penetrate into greasy dirt and lip-deep carbon black in the foundry goods, assurance repair layer and high base strength with removing.
When this equipment is used for the coating reinforcement of cermet material, do not need inert gas shielding.
This equipment uses the meltability electrode as the welding electrode, can adopt Ni-based or the thread welding rod of cobalt-base alloys, as the deposition reinforcement process time, can use tungsten carbide wc, titanium carbide TiC cermet electrodes filamentary material, its diameter should be between 1.2～2.5 millimeters.
Above-mentioned gas skirt is to make with the nonmetal plate of 1～2 millimeters thick, and sizable hole of planar defect offers and wait to repair watch in the middle of it.
The present invention a kind ofly repairs and the maintenance of equipment developed at the surface damage of heat treated Precision Machinery Elements, and this device is made up of power unit, inert gas air feed part and adjustable speed rotating electrode type welding gun.Electric spark when the electric arc that the medium and low frequency pulse current that the present invention utilizes its supply unit to provide produces between fusible electrode that is rotating and workpiece and this rotation electrode contacted with workpiece moment is supplied with needed thermal source in the welding process jointly, with the following top layer fusion of meltability electrode, continuously built-up welding forms the joint of metallurgical binding and repairs processing to surface of the work.The present invention is furnished with inert gas shielding (being called for short MIG) as a kind of arc surfacing equipment in the welding process, be aided with gas skirt again, can prevent effectively that welding zone burning and spark from splashing; And, with to utilize constant direct current to carry out common MIG arc-welding method different, the electric current of its work is the micropulse contact potential series of a kind of dutycycle very little (about 1/15-1/50), make the operating current of output be on-off state, promptly all there are " striking; arcing; blow-out " three processes at each impulse duration, thereby make the workpiece base material that be arranged enough cool times after being heated at every turn, also be that average welding energy is quite low, to the hot input quantity of workpiece substrate seldom, make and be subjected to welder's part not produce the dirt thermal deformation substantially, so after repairing, workpiece need not heat-treated again, can be simple, fast, repair workpiece economically.
The control circuit of present device is quite simple, regulation and control are easily convenient, and using method is also fairly simple, operation easily, and close with normal pulsed arc welding operating procedure, be convenient to grasp and use.
The present invention can be used for repairing mould, forge hot pressing mold tool, die casting, cold-work die and various mould of plastics and some cutter, instrument, apparatus etc., to the small size uniform wear of above-mentioned utensil, peel off damage, corner angle and collapse damage, draw all available the present invention such as ditch, metallurgical imperfection and repair.But this device is double as Pulse Electric spark surface-strengthening equipment also, can be with the surface of cermet material uniform deposition to machine components, the strengthening workpiece surface, for the element part, forging die, mold and the instrument that are in work under wearing and tearing, high temperature and the etch state, at surface deposition layer of metal pottery, can prolong its service life.The present invention adopts the strengthened coat uniformity of rotation electrode and is coated with interval velocity and all is better than legacy equipment.In a word, the present invention is as arc surfacing equipment, and is simple in structure, easy to operate; But its expendable electrode is rotary, the deposition efficiency height; Adopt argon shield, coating quality is good, and its repair layer combines with mother metal firmly; And adopting the micropulse current arc ignition, mother metal is not produced thermal deformation substantially, do not need heat treated following process, is a maintenance of equipment that has much the precision component blemish of popularizing application prospect.
Below in conjunction with accompanying drawing, specifically introduce device structure of the present invention and form and using method.
Fig. 1 is the schematic diagram of supply unit guidance panel of the present invention.
Fig. 2 is a supply unit circuit block diagram of the present invention.
Fig. 3 is a supply unit circuit circuit diagram of the present invention.
Fig. 4 is the main waveform schematic diagram of supply unit governor circuit of the present invention.
Fig. 5 is a feeder connection diagram of the present invention.
Fig. 6 is the structural representation of rotating electrode type welding gun of the present invention.
Referring to Fig. 1-Fig. 5, the present invention includes supply unit 1, feeder 4 and rotating electrode type welding gun 5, wherein feeder 4 is the inert gas steel cylinders 41 by the order serial connection, once press instrument 42, pressure regulator valve 43, secondary is pressed instrument 44, flowmeter 45 and air delivering pipeline 46 are formed, wherein supply unit 1 is a rectangular box, and the control circuit in the casing 10 is by regulator, current rectifying and wave filtering circuit, the charging input control circuit, the energy storage booster circuit, the discharge output control circuit, impulse output circuit and be respectively applied for control charging input, the operating frequency setting and the logic control circuit of the trigger impulse of discharge output are formed (referring to Fig. 2); The rotating speed that also is provided with the buncher 52 of rotating electrode type welding gun 5 in the supply unit is adjusted control circuit.
Referring to Fig. 3, the auto-transformer T1 in the control circuit of the present invention is that regulator is used for control output energy size.Rectifier bridge BD and C1 are current rectifying and wave filtering circuit.Silicon controlled crystal brake pipe SCR1 imports control for capacitor C 2 charging energy storage.Inductance L 1, capacitor C 2, C1 constitute resonant mode energy storage booster circuit, this circuit good energy-conserving effect, and the capacitor C 2 of energy storage booster circuit is provided with 3, and its capacity is respectively 33 μ F, 60 μ F and 100 μ F, and visual repair technology requires and selects it respectively for use.Wherein L1, C1 constitute oscillating circuit, have the effect that automatically shuts down SCR1.SCR2 is capacitor C 2 discharge output control circuits, and is same with SCR1, all controls its work by the logic control circuit of governor circuit frequency output.The present invention should trigger a utmost point of SCR1 in the input control impuls, finishing boost energy storage and SCR1 closes voluntarily and has no progeny, the blanking time (greater than 20 times of charging intervals) that allows afterwards, logic control circuit is just opened the b utmost point that discharges control impuls and trigger SCR2, is used for the striking welding thereby finish pulse current of output.Transformer T2 and diode D1, D2, D3 constitute the pulse output loop, governor circuit adopts 555 time base circuits to constitute adjustable frequency generator, constitute the frequency shaping circuit with d type flip flop (model is 4013), be connected to a, the b utmost point of SCR1 and SCR2 again through differential circuit, amplifying circuit, spacing output circuit respectively.Wherein the phase difference of output Q, the Q of shaping circuit is 180 °, can guarantee not conducting simultaneously of SCR1 and SCR2.The effect of differential circuit is to export the rising edge of pulse as the signal that triggers SCR1 and SCR2 with shaping circuit.
Each circuit waveform on the governor circuit is referring to shown in Figure 4.As can be seen from Figure 4, electrode working pulse of the present invention is the micropulse sequence of dutycycle quite little (about 1/15-1/50).
Be installed on voltmeter 11, fusible electrode revolution counter 12, digital frequency meter 13, flowmeter 14, the socket 15 that connects welding gun, argon gas venthole 16, output voltage binding post 17, storage capacitor adjustable column 18, frequency adjustment button 19, electrode rotational speed regulation button 20, voltage-regulation button 21, power switch 22 and power supply indicator 23 on the guidance panel shown in Figure 1.Casing 10 back plates also are installed on argon gas air inlet, fuse and supply socket etc.
The method of manipulating of the present invention is: at first correctly connect gas circuit, circuit, and conscientiously check it; Referring to Fig. 5, press instrument 44, flowmeter 45 and air delivering pipeline 46 to receive the gas circuit air inlet 57 of rotating electrode type welding gun 5 from steel cylinder 41 through once pressing instrument 42, pressure regulator valve 43, secondary in regular turn inert gas (argon gas) earlier.Wherein (referring to Fig. 6), rotating electrode type welding gun 5 of the present invention is by rifle formula shell 51, is installed in buncher 52, inert gas air chamber 53, the small-sized chuck 54 in the housing 51 and is clipped in meltability electrode 55 in the middle of the chuck 54, and is positioned at the anodal lead-in clamp 56 of the pulse power, inert gas on the shell 51 and imports that into hole 57 and motor start switch 58 are formed.59 is rifle body air chamber shell walls, the 60th that nonmetallic materials are made among the figure, carbon brush and spring, the 61st, conducting ring.Wherein the air chamber shell wall 59 of welding gun 5 front end nonmetallic materials is connected with welding gun shell 51 by screw thread; the diameter of these shell wall 59 center through hole is larger than the diameter of meltability electrode 55, the gas shield the when inert gas that enters air chamber 53 from input jack 57 just forms welding between the two gap ejection.
After gas circuit connects, also need connect circuit.The power input line that is about on the supply unit 1 connects 220 coucher frequency powers, casing 10 ground connection, casing 10 right sides three core sockets 15 are the Connection Blocks with rotating electrode type welding gun 5, the positive pole (+) of the voltage pulse output binding post 17 on the supply unit 1 is connected with the anodal contact 56 of importing of the pulse power on the welding gun shell 59, be connected with meltability electrode 55 through spring and carbon brush 60, conducting ring 61, chuck 54 again, meltability electrode 55 is connected with the pulse voltage positive pole of supply unit 1 output.And the negative pole (-) of the output voltage binding post 17 of supply unit is connected with workpiece to be welded.Wiring everywhere should connect reliably, and pipeline, screw should be tightened and put in place.
Wait to repair the surface treatment of workpiece then, will wait to repair burr, salient point, oxide layer and the fatigue layer at position with file, steel brush or emery cloth and polish removal totally, use gasoline, cleaning agent again, reach acetone scouring removing greasy dirt, the fresh metal covering of exposing surface.
Above-mentioned this surface treatment method is applicable to that mainly carbon steel, steel alloy and aluminium alloy class wait to repair other part, waiting to repair workpiece for the cast iron class then should be after waiting to repair surface clean, carry out again that electricity is clean, activation or baking handle, penetrate into greasy dirt and lip-deep carbon black in the foundry goods with removing, guarantee repair layer and substrate combinating strength.Afterwards,, select different fusible electrodes, remove rust staining and remove greasy dirt as mending material and, selected electrode being mended material also will carry out surface treatment by waiting to repair the electrode that the part surface configuration is prepared respective diameters by the specification requirement of waiting to repair workpiece.
When the present invention repairs with fusible voltinism electrode, can adopt Ni-based and the thread welding rod of cobalt-base alloys, as the deposition reinforcement process time, then can use tungsten carbide wc, the thread welding rod of titanium carbide TiC cermet electrodes, the diameter of these welding rods should be filled a vacancy on institute and be fallen into size and decide, usually between 1.2～2.5 millimeters.At this moment just can carry out repair operation, at first turn on the power switch and selected suitable capacitance energy storage; This moment, power supply indicator was bright, and the each several part instrument should show normally.Select operating frequency, make the digital frequency meter reading between 100～280HZ, regulate inert gas flow, output voltage and welding gun electrode rotating speed respectively, the argon gas secondary is pressed be 0.15-0.2Mpa, flow is at 0.4～0.6M
3Between/the H, output voltage then should be between 35～40 volts.During repairing, can place the gas skirt that the nonmetal plate of usefulness 1～2 millimeters thick is made, be provided with and the sizable hole of Surface Flaw in the middle of this gas skirt, be welded in this hole and carry out on the welding of workpiece surface.This gas skirt both can increase the protective effect of inert gas, can also reduce when welding to the metal ejecta pollution of other non-finished surfaces of workpiece be convenient to welding operation.
During welding, should open the argon gas stream metered valve earlier, the electrode that rotating to become 15～45 ° of angle of inclination modes near position to be repaired with workpiece, is made it to be in workpiece and seemingly contacts contactless state by arc discharge, the electrode material fusion sediment is carried out built-up welding successively to surface to be repaired; Every repairing built-up welding one deck should in time be checked and continues built-up welding with the smooth back of steel brush or flat file cleaning, carries out so repeatedly, until rejected region is mended, and should suitably leave pincers worker or mach allowance.
Order shutdown after the soldering operation is finished: close the inert gas flow metered valve earlier, voltage button, operating frequency adjusting knob are fallen back on the end, treat discharge off, close power switch again, close inert gas steel cylinder main valve at last.
Present device is used for cermet material uniform depositions such as carbide alloy to machinery part surface, carries out coating when strengthening, and does not need inert gas shielding, and the operation of above-mentioned air path part has just all been omitted.
The present invention manufactures experimently out model machine, through adopting different material and the kinds of processes parameters of mending, different machine components and mould is carried out the repair welding operation, has all reached the goal of the invention of expection.
Claims (10)
1, a kind of inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode, include supply unit, feeder and rotating electrode type welding gun, wherein feeder is by the inert gas steel cylinder, once press instrument, pressure regulator valve, secondary to press instrument, flowmeter and air delivering pipeline to be formed; It is characterized in that: wherein supply unit is a rectangular box, control circuit in the casing be by the regulator that is linked in sequence, current rectifying and wave filtering circuit, charging input control circuit, energy storage booster circuit, discharge output control circuit, impulse output circuit with and output be connected to charging input control circuit and discharge output circuit respectively, the operating frequency setting and the logic control circuit that are respectively applied for the trigger impulse of control charging input, discharge output are formed; The rotating electrode type welding gun is then by rifle formula shell and be installed in air chamber, the small-sized chuck of buncher in the housing, inert gas and be clipped in the meltability electrode in the middle of the chuck and the anodal input of pulse power contact, inert gas input jack and the motor start switch that is positioned on the shell formed.
2, the inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode as claimed in claim 1, it is characterized in that: wherein the electric capacity of energy storage booster circuit can be three, its capacity is respectively 33 μ F, 60 μ F and 100 μ F.
3, the inert gas-shielded arc welding mould repairing machine of micropulse as claimed in claim 1 rotation consumable electrode is characterized in that: wherein operating frequency is provided with circuit and is made of time base circuit, and its operating frequency range is 10-1000HZ.
4, the inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode as claimed in claim 1, it is characterized in that: wherein the air chamber shell wall of rotating electrode type welding gun front end nonmetallic materials is connected with the welding gun shell by screw thread, and the diameter of this shell wall center through hole should be greater than the diameter of meltability electrode; The anodal input of the pulse power on welding gun shell contact constitutes electric path through spring, carbon brush, conducting ring, chuck and meltability electrode, and the meltability electrode is connected with the pulse voltage positive pole of supply unit output.
5, the inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode as claimed in claim 1 is characterized in that: wherein supply unit also is provided with the rotating speed adjustment control circuit of the buncher of rotating electrode type welding gun.
6, a kind of using method of inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode is characterized in that:
One, at first correctly connect gas circuit, circuit and conscientiously check it, wherein the output voltage binding post of circuit arrangement is anodal is connected with welding gun, and its negative pole is connected with workpiece to be repaired, and welding gun also is connected with socket by cable plug with supply unit; It is firm that wiring everywhere connects, and pipeline, screw-driving put in place;
Two, then wait to repair the surface treatment of workpiece: burr, salient point, oxide layer, the fatigue layer polishing that will wait to repair the position with file, steel brush or emery cloth are clean, clean with gasoline, cleaning agent and acetone and remove greasy dirt, the fresh metal covering of exposing surface;
Three, select the material of fusible electrode by the specification requirement of waiting to repair workpiece,, selected electrode is also carried out surface treatment: remove rust staining and remove surface and oil contaminant by waiting to repair the electrode that the part surface configuration is prepared respective diameters; And with the meltability electrode clamping that cleans up in the welding gun chuck, its extension can not be long or too short;
Four, carry out the weld deposit repairing operation:
(1) turns on the power switch, and select suitable storage capacitor amount;
(2) select operating frequency;
(3) regulate inert gas flow;
(4) regulate output voltage;
(5) regulate the welding gun electrode rotating speed according to the different materials of workpiece and electrode;
(6) place the gas skirt made from nonmetallic materials on workpiece welding surface, be provided with and Surface Flaw sizableness hole in the middle of this gas skirt;
(7) carry out the weld deposit repairing operation: open gas flow valve earlier, make inert gas flow at 0.4～0.6m
3/ hour between, with the electrode that rotating with the workpiece inclination angle be 15～45 ° mode near workpiece position to be repaired, make it to be in and seemingly contact contactless state with workpiece, pass through arc discharge, electrode material fusion and transition deposited to wait to repair the surface, carry out built-up welding successively; Every repairing built-up welding one deck all should in time check and use steel brush flat file cleaning smooth, continues built-up welding then, carries out so repeatedly, up to defective part is mended, and should suitably leave allowance;
(8) the welding operation is finished, the order shutdown: close the inert gas flow metered valve earlier, again the voltage button is fallen back on the end counterclockwise, treat discharge off, close power switch again, close inert gas steel cylinder main valve at last.
7, the using method of the inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode as claimed in claim 6 is characterized in that: the surface treatment of repairing workpiece for the treatment of in the above-mentioned using method mainly is applicable to carbon steel, steel alloy and aluminium alloy class material; Should be after waiting to repair surface clean for cast iron class workpiece to be repaired, carry out again that electricity is clean, activation or baking handle, penetrate into greasy dirt and lip-deep carbon black in the foundry goods with removing, guarantee repair layer and high base strength.
8, the using method of the inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode as claimed in claim 6 is characterized in that: when this equipment is used for the coating reinforcement of cermet material, do not need inert gas shielding.
9, the using method of the inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode as claimed in claim 6 is characterized in that: this equipment uses the meltability electrode as the welding electrode, can adopt Ni-based or the thread welding rod of cobalt-base alloys; As the deposition reinforcement process time, can use tungsten carbide wc, titanium carbide TiC cermet electrodes filamentary material, its diameter should be between 1.2～2.5 millimeters.
10, the using method of the inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode as claimed in claim 6; it is characterized in that: above-mentioned gas skirt is to make with the nonmetal plate of 1～2 millimeters thick, offers and treat the sizable hole of repair surface defects in the middle of it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97116951 CN1048206C (en) | 1997-09-30 | 1997-09-30 | Gas protective welding mould repair machine with micropulsed rotating consumable electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97116951 CN1048206C (en) | 1997-09-30 | 1997-09-30 | Gas protective welding mould repair machine with micropulsed rotating consumable electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1180004A CN1180004A (en) | 1998-04-29 |
| CN1048206C true CN1048206C (en) | 2000-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97116951 Expired - Fee Related CN1048206C (en) | 1997-09-30 | 1997-09-30 | Gas protective welding mould repair machine with micropulsed rotating consumable electrode |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102218618B (en) * | 2011-06-13 | 2013-04-17 | 天津职业技术师范大学 | Surfacing equipment and method of high Al-Ti type high-temperature nickel base alloy |
| CN104107974A (en) * | 2013-04-16 | 2014-10-22 | 中国人民解放军装甲兵工程学院 | Low-heat intermittent pulse cold repair method for cast aluminium alloy materials |
| CN103990892B (en) * | 2014-05-23 | 2016-08-24 | 唐山松下产业机器有限公司 | Inversion welding equipment and control method thereof |
| CN105149731B (en) * | 2015-08-12 | 2017-05-17 | 山东奥太电气有限公司 | Device and method for improving consumable electrode gas-shielded welding arc striking performance |
| CN111390343A (en) * | 2020-05-14 | 2020-07-10 | 重庆科技学院 | Special control circuit for high-strength steel welding machine |
| CN112548482A (en) * | 2020-10-28 | 2021-03-26 | 中国人民解放军空军工程大学航空机务士官学校 | TC4 titanium alloy structure in-situ growth repair process based on micro-arc additive manufacturing and tool kit |
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1997
- 1997-09-30 CN CN 97116951 patent/CN1048206C/en not_active Expired - Fee Related
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| CN1180004A (en) | 1998-04-29 |
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