CN208116984U - plasma arc generator - Google Patents
plasma arc generator Download PDFInfo
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- CN208116984U CN208116984U CN201820548927.2U CN201820548927U CN208116984U CN 208116984 U CN208116984 U CN 208116984U CN 201820548927 U CN201820548927 U CN 201820548927U CN 208116984 U CN208116984 U CN 208116984U
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Abstract
The utility model relates to a kind of plasma arc generator, a kind of plasma arc generator, including control circuit board, Arc Welding Power and hf arc starter；PLASMA ARC WELDING sequence circuit is provided in the control circuit board；The hf arc starter is connected with untransferable arc shot-firing circuit；One end connection untransferable arc shot-firing circuit and tip of the Arc Welding Power；The other end connects weldment.The utility model can be equipped with the plasma (welding) torch of different model, form the plasma arc device of different model；For stainless steel pipes longitudinal seam welding, not only welding quality improves a lot with production efficiency, while can satisfy the welding of various different-thickness workpiece.
Description
Technical field
The utility model relates to field of welding devices, especially a kind of plasma arc generator.
Background technique
In mechanical manufacturing field, depending on the different process requirement of metal works structure, different welding methods is used, often
That sees has argon arc welding, submerged-arc welding, CO2Weldering, the welding methods such as manual welding.
Wherein, argon arc welding is a kind of free electric arc, and electric arc is in umbrella, and arc energy is more dispersed, therefore weld penetration is smaller,
Welding efficiency is low, and heat input is big, but face of weld forming；Due to carrying out weld seam protection using inert gas Ar, weld seam is comprehensive
Close good mechanical property.
And plasma arc welding technology is a kind of modern for growing up on the basis of argon arc welding technology efficiently side of welding
Method.Plasma-arc is that the free electric arc of argon arc welding is passed through mechanical compression；After hot compression and electromagnetic compression, one kind of formation
High energy column electric arc has arc column section small, and current density is big, and arc stiffness is good, and flow velocity is fast, and penetration power is strong, arc temperature pole
Height can achieve 50000 DEG C or more, in the case that workpiece is not necessarily to groove, and maximum can weld the steel plate of 12mm；Electric arc when welding
Workpiece is penetrated, aperture is formed, with the movement of electric arc, liquid metal flow to the rear of aperture in front of aperture, forms weldering
Seam.Compared with other welding methods, energy is concentrated, and welding efficiency is high, while the heat input of workpiece is small, substantially reduces welding
Deformation.
But in the prior art, Plasma Welding equipment manufacturing cost is expensive, and space occupied is big, and installation and debugging are complicated, user's investment
At high cost, it is impossible to meet the requirements of the PLASMA ARC WELDING technique of various different specifications, to influence plasma arc Welding
Popularization and use.
Utility model content
The technical problems to be solved in the utility model is：A kind of plasma arc generator is provided, by matching different arcs
Power supply and different plasma (welding) torches are welded, the PLASMA ARC WELDING technique requirement of various different specifications can be met.
Technical solution adopted by the utility model to solve its technical problems is：A kind of plasma arc generator, including control
Circuit board, Arc Welding Power and hf arc starter processed；PLASMA ARC WELDING process control is provided in the control circuit board
Circuit；The hf arc starter is connected with untransferable arc shot-firing circuit；One end of the Arc Welding Power connects untransferable arc
Shot-firing circuit and tip；The other end connects weldment.
Further, untransferable arc shot-firing circuit described in the utility model includes the full-bridge rectification being constituted by a diode
Circuit, the filter circuit being made of capacitor and the input voltage switching circuit being made of relay and switching switch；It is described
Full bridge rectifier input terminal connect 220V voltage, full bridge rectifier output end connection filter circuit and one by
Three concatenated resistance strings of same resistance；The first of the input terminal of the switching switch including full bridge rectifier is arranged in cuts
The the second switching switching group changing switching group and being connect with resistance string.
It further says, tip described in the utility model is the constricting nozzle of 0.6~3.2mm of aperture.
The utility model has the beneficial effects that solving defect present in background technique, different model can be equipped with
Plasma (welding) torch forms the plasma arc device of different model；For stainless steel pipes longitudinal seam welding, not only welding quality
It improves a lot with production efficiency, while can satisfy the welding of various different-thickness workpiece.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the electrical schematic diagram of the utility model；
Fig. 2 is the utility model PLASMA ARC WELDING sequence circuit figure；
Fig. 3 is the utility model untransferable arc shot-firing circuit figure.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing and preferred embodiment.These attached drawings are letter
The schematic diagram of change, only illustrates the basic structure of the utility model in a schematic way, thus its only show it is related with the utility model
Composition.
A kind of plasma arc generator as shown in Figs. 1-3, including control circuit board, Arc Welding Power and high-frequency arc strike
Device；PLASMA ARC WELDING sequence circuit is provided in the control circuit board；The hf arc starter is connected with non-
Transferred arc shot-firing circuit；One end connection untransferable arc shot-firing circuit and tip of the Arc Welding Power；Other end connection weldering
Part.
Untransferable arc shot-firing circuit is as shown in figure 3, including the full bridge rectifier being constituted by a diode, being made of capacitor
Filter circuit and by relay and the input voltage switching circuit that constitutes of switching switch；The full bridge rectifier
Input terminal connects 220V voltage, and the output end connection filter circuit of full bridge rectifier and one are connected by three same resistances
Resistance string；The described switching switch include be arranged in the input terminal of full bridge rectifier the first switching switching group and with electricity
The second switching switching group that resistance series winding connects.
The source of welding current usually all uses DC power supply.When welding aluminium, magnesium and its alloy, using AC power source, using pulse
DC power supply is to preferably control welding condition, and pulse frequency and pulse width are adjustable.It is all that there is decline
Or the power supply of vertical decline external characteristics is available for plasma arc welding (PAW) use.
Nozzle is the constricting nozzle of 0.6~3.2mm of aperture.Usual plasma arc welding (PAW) of the welding current greater than 30A or more is all
Using transfevent electric arc, i.e., first ignite between tungsten electrode and nozzle untransferable arc, then establishes and turns between tungsten electrode and workpiece again
Arc is moved, transferred arc cuts off untransferable arc immediately after being formed, two electric arcs do not exist simultaneously.Electric current 30A microbeam below etc. from
Subarc weldering all uses associative form arc, and non-diverting type arc and transfevent exist simultaneously, therefore need to use two independent power supplys, works as use
Minimum welding current >=5A when, pilot source can not had to.Arc ignition generally use it is contactless with TIG as weldering,
It is superimposed a high frequency in welding circuit and swings device or low-power high-voltage pulse arc initiation device；Make tungsten electrode by high-frequency spark or high-voltage pulse
Ignite untransferable arc between nozzle.
The utility model can be equipped with the plasma (welding) torch of different model, and the plasma arc welding (PAW) for forming different model is set
It is standby；For stainless steel pipes longitudinal seam welding, not only welding quality improves a lot with production efficiency, while can satisfy various
The welding of different-thickness workpiece.Furthermore it is also possible to hard heat treatment is carried out with the plasma arc that plasma arc generator generates,
Improve the surface hardness of workpiece.
It is specific embodiment of the present utility model described in above instructions, various illustrations are not practical to this
Novel substantive content is construed as limiting, and person of an ordinary skill in the technical field can be to former institute after having read specification
The specific embodiment stated is made an amendment or is deformed, without departing from the spirit and scope of utility model.
Claims (3)
1. a kind of plasma arc generator, it is characterised in that：Including control circuit board, Arc Welding Power and hf arc starter；Institute
PLASMA ARC WELDING sequence circuit is provided in the control circuit board stated；The hf arc starter is connected with untransferable arc
Shot-firing circuit；One end connection untransferable arc shot-firing circuit and tip of the Arc Welding Power；The other end connects weldment.
2. plasma arc generator as described in claim 1, it is characterised in that：The untransferable arc shot-firing circuit include by
It the full bridge rectifier of diode composition, the filter circuit that is made of capacitor and is made of relay and switching switch
Input voltage switching circuit；The input terminal of the full bridge rectifier connects 220V voltage, the output end of full bridge rectifier
Filter circuit and one are connected by three concatenated resistance strings of same resistance；The switching switch includes that setting is whole in full-bridge
First switching switching group of the input terminal of current circuit and the second switching switching group being connect with resistance string.
3. plasma arc generator as described in claim 1, it is characterised in that：The tip is 0.6~3.2mm's of aperture
Constricting nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820548927.2U CN208116984U (en) | 2018-04-17 | 2018-04-17 | plasma arc generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820548927.2U CN208116984U (en) | 2018-04-17 | 2018-04-17 | plasma arc generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208116984U true CN208116984U (en) | 2018-11-20 |
Family
ID=64190418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820548927.2U Active CN208116984U (en) | 2018-04-17 | 2018-04-17 | plasma arc generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208116984U (en) |
-
2018
- 2018-04-17 CN CN201820548927.2U patent/CN208116984U/en active Active
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