CN2314882Y - Mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode - Google Patents
Mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode Download PDFInfo
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- CN2314882Y CN2314882Y CN 97227978 CN97227978U CN2314882Y CN 2314882 Y CN2314882 Y CN 2314882Y CN 97227978 CN97227978 CN 97227978 CN 97227978 U CN97227978 U CN 97227978U CN 2314882 Y CN2314882 Y CN 2314882Y
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Abstract
The utility model relates to a mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode, 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 utility model 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, with the advantages of simple structure, easy operation, and high work efficiency.
Description
The utility model relates to a kind of maintenance of equipment of repairing at the blemish of heat treated Precision Machinery Elements; exactly; relate to a kind of inert gas-shielded arc welding mould repairing machine of micropulse rotation consumable electrode, belong to the apparatus technology of carrying out arc surfacing with the melt metal plied timber.
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.
The purpose of this utility model provides the inert gas-shielded arc welding mould repairing machine that consumable electrode is rotated in a kind of novel device one micropulse that the Precision Machinery Elements blemish is repaired; this device can be directly used in the surface local defective of repairing the dress mould; and generally do not need subsequent techniques such as heat treatment; improve work efficiency; shorten process time, good in economic efficiency.
The utility model is achieved in that and includes supply unit, feeder and rotating electrode type welding gun, and wherein feeder is by the inert gas bottle of order serial connection, 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, and the control circuit in the casing includes: the auto-transformer regulator that is linked in sequence, current rectifying and wave filtering circuit, charging input control circuit, inductance and capacitor resonance formula energy storage booster circuit, discharge output control circuit, impulse output circuit and the operating frequency setting and the logic control circuit that are respectively applied for the silicon controlled crystal brake pipe trigger impulse of control charging input, discharge output; The rotating electrode type welding gun then by rifle formula shell and be installed in rear portion in the housing buncher, be positioned at the air chamber of the inert gas at housing middle part, and the small-sized chuck that is connected with this buncher rotating shaft and the meltability electrode that is clipped in the middle of the chuck are 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.
Wherein gas skirt is to make with the nonmetal plate of 1-2 millimeters thick, offers the hole with the corresponding size of overlay cladding in the middle of it.
The utility model is a kind ofly to repair 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 utility model 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 utility model 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 thermal deformation substantially, so after repairing, workpiece need not heat-treated again, can be simple, fast, repair workpiece economically.
The utility model 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 utility model 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 utility model 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 utility model 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 subsequent heat treatment, is a maintenance of equipment that has much the precision component blemish of popularizing application prospect.
Fig. 1 is the schematic diagram of supply unit guidance panel of the present utility model;
Fig. 2 is a supply unit electrical principle block diagram of the present utility model;
Fig. 3 is a supply unit electric circuit diagram of the present utility model;
Fig. 4 is the main waveform schematic diagram of supply unit governor circuit of the present utility model;
Fig. 5 is the utility model feeder connection diagram;
Fig. 6 is the structural representation of the utility model rotating electrode type welding gun;
Referring to Fig. 1-Fig. 3, the utility model 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 utility model control circuit 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 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 utility model 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 relative potential 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 utility model 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.
Referring to Fig. 6, rotating electrode type welding gun 5 of the present utility model is by rifle formula shell 51, is installed in air chamber 53, the small-sized chuck 54 of buncher 52 in the housing 51, inert gas and is clipped in meltability electrode 55 in the middle of the chuck 54, and the anodal input of the pulse power contact 56, inert gas input jack 57 and the motor start switch 58 that are installed on the shell 59 are formed.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.The positive pole (+) of the output voltage 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 51, be connected with meltability electrode welding rod 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.
Basic operation method of the present utility model is: at first correctly connect gas circuit (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 inert gas (argon gas) earlier.After gas circuit connects, secondary air pressure and flow should be adjusted, also circuit will be connected.Be about to power input line and connect 220 coucher frequency powers, casing 10 ground connection, casing 10 right sides three core sockets 15 are and the Connection Block of rotating electrode type welding gun 5, and 17 of voltage pulse output binding posts should be with the electrode 55 of anodal line receiving electrode formula welding gun 5, and negative pole then line connects workpiece.Select differently to mend the electrode of materials and be fixed on the welding gun 5 according to arts demand then, after carrying out surface cleaning processing, select just can weld after suitable storage capacitor amount, operating frequency, electrode rotating speed, the operating voltage and repaired weld job.During repairing, can place a gas skirt made from nonmetal plate on the welding surface of workpiece, the centre of this gas skirt is provided with the size hole suitable with Surface Flaw, is welded in this hole and carries out.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.
The utility model is manufactured experimently out model machine, carries out the repair welding operation through adopting different benefit materials and kinds of processes parameter, the repairing of mould has been reached the goal of the invention of expection.
Claims (5)
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 bottle of order serial connection, 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 cuboid, and the control circuit in the casing includes: the auto-transformer regulator that is linked in sequence, current rectifying and wave filtering circuit, charging input control circuit, inductance and capacitor resonance formula energy storage booster circuit, discharge output control circuit, impulse output circuit and the operating frequency setting and the logic control circuit that are respectively applied for the silicon controlled crystal brake pipe trigger impulse of control charging input, discharge output; The rotating electrode type welding gun then by rifle formula shell and be installed in rear portion in the housing buncher, be positioned at the air chamber of the inert gas at housing middle part, and the small-sized chuck that is connected with this buncher rotating shaft and the meltability electrode that is clipped in the middle of the chuck are 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 the front end nonmetallic materials of rotating electrode type welding gun 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; Pulse power positive pole on the shell 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97227978 CN2314882Y (en) | 1997-09-30 | 1997-09-30 | Mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97227978 CN2314882Y (en) | 1997-09-30 | 1997-09-30 | Mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314882Y true CN2314882Y (en) | 1999-04-21 |
Family
ID=33941240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97227978 Expired - Fee Related CN2314882Y (en) | 1997-09-30 | 1997-09-30 | Mold repairing machine for inert gas protection welding of micro pulse rotary melting electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314882Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357053C (en) * | 2005-10-24 | 2007-12-26 | 中国石油大学(华东) | Voltage-regulating energy saving spark machining pulse power supply |
-
1997
- 1997-09-30 CN CN 97227978 patent/CN2314882Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357053C (en) * | 2005-10-24 | 2007-12-26 | 中国石油大学(华东) | Voltage-regulating energy saving spark machining pulse power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |