CN104259641A - Plasma cladding build-up welding device - Google Patents
Plasma cladding build-up welding device Download PDFInfo
- Publication number
- CN104259641A CN104259641A CN201410440497.9A CN201410440497A CN104259641A CN 104259641 A CN104259641 A CN 104259641A CN 201410440497 A CN201410440497 A CN 201410440497A CN 104259641 A CN104259641 A CN 104259641A
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- CN
- China
- Prior art keywords
- arc
- welding gun
- minor arc
- alarm
- welding
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/02—Plasma welding
- B23K10/027—Welding for purposes other than joining, e.g. build-up 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
- B23K10/00—Welding or cutting by means of a plasma
- B23K10/006—Control circuits therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
- Plasma Technology (AREA)
Abstract
The invention relates to a plasma cladding build-up welding device. The plasma cladding build-up welding device comprises a welding gun, a cooling water power supply, a main control board and a plasma power supply connected with the main control board, wherein the cooling water source and the main control board are connected with the welding gun. The output end of the main control board is connected with a main arc device and a pilot arc device. A temperature control alarm device is arranged between the main control board and the main arc device. A pressure alarm device is arranged between the welding gun and the main arc device. A powder sending device is arranged between the main control board and the welding gun. The temperature control alarm device is arranged between the main arc device and the main control board and monitors the temperature of the plasma cladding build-up welding device in real time, an alarm is given and an electric arc is powered off when the temperature of the device is too high; the pressure alarm device is arranged between the cooling water power supply and the welding gun and plays a role for making the pressure of the plasma cladding build-up welding device constant, and once the pressure is too low, an alarm is given, the electric arc is powered off, and the welding gun is protected. Thus, the service life of the welding gun is prolonged, semi-automatic powder sending can be achieved through a power sending control switch, and unceasing power sending is achieved as well when the plasma cladding build-up welding device is directly connected with a signal line in a butt joint mode.
Description
Technical field
The present invention relates to a kind of machining equipment, particularly relate to a kind of plasma cladding build-up welding apparatus.
Background technology
Many parts are had to be subject to harsh impact wear, abrasive wear and corrosive wear in process under arms in engineering machinery, mining machinery.The material cost of this type of part is expensive, processing difficulties, and service life is not long.When surface abrasion is excessive, just need to carry out built-up welding process to piece surface, traditional hardfacing technology welding rod utilization rate is low, fusion penetration and the inconsistent hardness that causes of dilution rate uneven, the raising of hardness and wearability is restricted, rough surface is difficult to processing, workpiece deformation is large, and laser beam cladding coating can realize high-quality and the performance on surface, but the cost of laser equipment has high input, and operating environment requires strict, so be not suitable for promoting.And the appearance of plasma melting coating technique well solves the problems referred to above, plasma cladding surface treatment makes metal surface on base material, realize the new surface modifications technology of the performance such as wear-resisting, high temperature resistant, shock-resistant, corrosion-resistant.Because energy density is high, penetrability is strong, by plasma high energy beam irradiation, the alloy powder delivering to substrate surface is melted rapidly, substrate surface 0.1 ~ 0.2mm shallow-layer is melted simultaneously, alloy pool is formed at surface of the work, after welding gun is removed, under the rapid thermal conduction of workpiece itself and the radiation thermal conduction effect of workpiece surrounding air, molten bath rapid condensation is shaped, thus it is even to form molecular structure, the multiple strengthening effect of densification, fine microstructures, pore-free, flawless and deposition.Existing plasma melting coating equipment in use, owing to there is no apparatus for warning overload, cannot Timeliness coverage process when causing overload, easily produce amount of heat during overload, and then article on plasma cladding equipment causes damage, in addition in plasma cladding equipment use process, the sustainable supply keeping cooling water is requisite step in cladding process, but when cooling water pressure is not enough, machine still can work on, easily cause the damage of Butt welding gun, reduce the service life of welding gun.
Summary of the invention
For the present situation of above-mentioned prior art; technical problem to be solved by this invention is to provide one can protect machine overload; overload alarm breaking arc; automatically can cut off main arc power source when welding gun cooling water pressure is not enough simultaneously, and the continuous powder feeding of dust feeder and the plasma cladding overlaying system of semi-automatic powder feeding can be realized.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of plasma cladding build-up welding apparatus, the cooling water power supply comprising welding gun and be connected with this welding gun, master control borad and the plasma power supply be connected with this master control borad, described master control borad output is connected with minor arc device and arc-maintaining device, temp. controlling alarm is provided with between described master control borad and minor arc device, be provided with pressure warning unit between described welding gun and minor arc device, between described master control borad and welding gun, be provided with dust feeder.
Further, the minor arc that described minor arc device comprises minor arc drive unit and is connected with this minor arc drive unit, described minor arc is provided with minor arc current regulating circuit and the first air valve;
Described minor arc drive unit receives the electric current that plasma power supply provides, and impels minor arc generating run;
Described minor arc current regulating circuit regulates minor arc electric current;
The working gas that described first air valve applies certain pressure provides mechanical compress effect.
Further, the arc maintenance that described arc-maintaining device comprises arc maintenance drive unit and is connected with this arc maintenance drive unit, described arc maintenance is provided with back ground current regulating circuit and the second air valve;
Described arc maintenance drive unit receives the electric current that plasma power supply provides, and makes to form back ground current between welding gun and workpiece at the start initial stage;
Described back ground current regulating circuit regulates back ground current;
The working gas that described second air valve applies certain pressure provides mechanical compress effect.
Further, described temp. controlling alarm comprises temperature controller and alarm;
Described attemperating unit monitors machine master control borad temperature in real time, and rated temperature is 30 °;
Described alarm is reported to the police when attemperating unit detected temperatures is more than 30 °, and closes arc current.
Further, described pressure warning unit comprises pressure detector and alarm;
Described pressure detector enters the force value of welding gun for detecting cooling water;
Described alarm is reported to the police when pressure detector detection cooling water pressure is too low, and by arc cutting.
Further, the described dust feeder gauge tap that comprises powder feeder and be connected with this powder feeder.
Compared with prior art; the invention has the advantages that: adopt, between minor arc device and master control borad, temp. controlling alarm is installed; the temperature of real-time monitoring equipment; report to the police when apparatus overheat; and close electric arc; between cooling water power supply and welding gun, pressure warning unit is set; play the effect to equipment constant pressure; report to the police once too low, and close electric arc, Butt welding gun is protected; thus extend welding gun service life; powder feeding gauge tap can realize semi-automatic powder feeding, also directly can dock holding wire, realizes continuous powder feeding.
Accompanying drawing explanation
Fig. 1 is frame diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based in the present invention being embodiment, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of plasma cladding build-up welding apparatus, the cooling water power supply comprising welding gun and be connected with welding gun, master control borad and the plasma power supply be connected with this master control borad, described master control borad output is connected with minor arc device 1 and arc-maintaining device 2, temp. controlling alarm 3 is provided with between described master control borad and minor arc device 1, be provided with pressure warning unit 4 between described welding gun and minor arc device 1, between described master control borad and welding gun, be provided with dust feeder 5.
Dust feeder 5 comprises two kinds of powder feeding patterns, when selecting powder feeding gauge tap to control powder feeder powder feeding, start semi-automatic powder feeding, when selecting master control borad to control the input of dust feeder, dust feeder receives master control borad signal, and perform powder feeding to welding gun, carry out automatic powder feeding, make powder sending quantity accurately and timely.
Controlled the outflow of bus current of plasma power supply by master control borad, ensure that plasma power supply is transported to the current stabilization of minor arc device and arc-maintaining device.
The minor arc that described minor arc device 1 comprises minor arc drive unit and is connected with this minor arc drive unit, described minor arc is provided with minor arc current regulating circuit and the first air valve, described minor arc drive unit receives the electric current that plasma power supply provides, impel minor arc generating run, described minor arc current regulating circuit regulates minor arc electric current, be minor arc electric current held stationary, the working gas that air valve applies certain pressure provides mechanical compress effect, forces arc column to pass through pore.
The arc maintenance that described arc-maintaining device 2 comprises arc maintenance drive unit and is connected with this arc maintenance drive unit, described arc maintenance is provided with back ground current regulating circuit and the second air valve, described arc maintenance drive unit receives the electric current that plasma power supply provides, make to form back ground current between welding gun and workpiece at the start initial stage, described back ground current regulating circuit regulates back ground current, and the working gas that air valve applies certain pressure provides mechanical compress effect.
Described temp. controlling alarm 3 comprises temperature controller and alarm, and described attemperating unit monitors machine master control borad temperature in real time, and rated temperature is 30 °, and described alarm is reported to the police when attemperating unit detected temperatures is more than 30 °, and closes arc current.
Described pressure warning unit 4 comprises pressure detector and alarm; Described pressure detector enters the force value of welding gun for detecting cooling water; Described alarm is reported to the police when pressure detector detection cooling water pressure is too low; And cut off by main arc power source, thus realize the protection of Butt welding gun.
Compared with prior art; the invention has the advantages that: adopt, between minor arc device 1 and master control borad, temp. controlling alarm 3 is installed; the temperature of real-time monitoring equipment; report to the police when apparatus overheat; and close electric arc; pressure warning unit 4 is set between cooling water power supply and welding gun; play the effect to equipment constant pressure; report to the police once too low, and close electric arc, Butt welding gun is protected; thus extend welding gun service life; powder feeding gauge tap can realize semi-automatic powder feeding, also directly can dock holding wire, realizes continuous powder feeding.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, it will be understood by those of skill in the art that it still can be modified to the technical scheme described in foregoing embodiments, or wherein portion of techniques feature is replaced on an equal basis; And these amendments or replacement, do not make the essence of appropriate technical solution depart from spirit and the scope of various embodiments of the present invention technical scheme.
Claims (6)
1. a plasma cladding build-up welding apparatus, the cooling water power supply comprising welding gun and be connected with this welding gun, master control borad and the plasma power supply be connected with this master control borad, it is characterized in that, described master control borad output is connected with minor arc device (1) and arc-maintaining device (2), temp. controlling alarm (3) is provided with between described master control borad and minor arc device (1), be provided with pressure warning unit (4) between described welding gun and minor arc device (1), between described master control borad and welding gun, be provided with dust feeder (5).
2. a kind of plasma cladding build-up welding apparatus according to claim 1, it is characterized in that, the minor arc that described minor arc device (1) comprises minor arc drive unit and is connected with this minor arc drive unit, described minor arc is provided with minor arc current regulating circuit and the first air valve;
Described minor arc drive unit receives the electric current that plasma power supply provides, and impels minor arc generating run;
Described minor arc current regulating circuit regulates minor arc electric current;
The working gas that described first air valve applies certain pressure provides mechanical compress effect.
3. a kind of plasma cladding build-up welding apparatus according to claim 1, it is characterized in that, the arc maintenance that described arc-maintaining device (2) comprises arc maintenance drive unit and is connected with this arc maintenance drive unit, described arc maintenance is provided with back ground current regulating circuit and the second air valve;
Described arc maintenance drive unit receives the electric current that plasma power supply provides, and makes to form back ground current between welding gun and workpiece at the start initial stage;
Described back ground current regulating circuit regulates back ground current;
The working gas that described second air valve applies certain pressure provides mechanical compress effect.
4. a kind of plasma cladding build-up welding apparatus according to claim 1, is characterized in that, described temp. controlling alarm (3) comprises temperature controller and alarm;
Described attemperating unit monitors machine master control borad temperature in real time, and rated temperature is 30 °;
Described alarm is reported to the police when attemperating unit detected temperatures is more than 30 °, and closes arc current.
5. a kind of plasma cladding build-up welding apparatus according to claim 1, is characterized in that, described pressure warning unit (4) comprises pressure detector and alarm;
Described pressure detector enters the force value of welding gun for detecting cooling water;
Described alarm is reported to the police when pressure detector detection cooling water pressure is too low, and by arc cutting.
6. a kind of plasma cladding build-up welding apparatus according to claim 1, is characterized in that, the gauge tap that described dust feeder (5) comprises powder feeder and is connected with this powder feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440497.9A CN104259641A (en) | 2014-08-27 | 2014-08-27 | Plasma cladding build-up welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440497.9A CN104259641A (en) | 2014-08-27 | 2014-08-27 | Plasma cladding build-up welding device |
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| Publication Number | Publication Date |
|---|---|
| CN104259641A true CN104259641A (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410440497.9A Pending CN104259641A (en) | 2014-08-27 | 2014-08-27 | Plasma cladding build-up welding device |
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| CN (1) | CN104259641A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05277744A (en) * | 1992-04-02 | 1993-10-26 | Matsushita Electric Ind Co Ltd | Plasma arc cutting device |
| JP2001087863A (en) * | 1999-09-20 | 2001-04-03 | Amada Co Ltd | Plate working method and device |
| CN1375375A (en) * | 2002-04-22 | 2002-10-23 | 上海工程技术大学 | Plasma welding machine with miniature beam |
| CN1978117A (en) * | 2005-12-09 | 2007-06-13 | 上海工程技术大学 | Double-processor digital coutrol system of microbeam plasma weld and coutrol method |
| CN204075483U (en) * | 2014-08-27 | 2015-01-07 | 宁波市鄞州镭速激光科技有限公司 | A kind of plasma cladding build-up welding apparatus |
-
2014
- 2014-08-27 CN CN201410440497.9A patent/CN104259641A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05277744A (en) * | 1992-04-02 | 1993-10-26 | Matsushita Electric Ind Co Ltd | Plasma arc cutting device |
| JP2001087863A (en) * | 1999-09-20 | 2001-04-03 | Amada Co Ltd | Plate working method and device |
| CN1375375A (en) * | 2002-04-22 | 2002-10-23 | 上海工程技术大学 | Plasma welding machine with miniature beam |
| CN1978117A (en) * | 2005-12-09 | 2007-06-13 | 上海工程技术大学 | Double-processor digital coutrol system of microbeam plasma weld and coutrol method |
| CN204075483U (en) * | 2014-08-27 | 2015-01-07 | 宁波市鄞州镭速激光科技有限公司 | A kind of plasma cladding build-up welding apparatus |
Non-Patent Citations (2)
| Title |
|---|
| 李振东: "高能PTA系统设计及风口应用研究", 《中国优秀硕士学位论文全文数据库（工程科技Ⅰ辑）》 * |
| 许雪: "多功能等离子弧金属表面改性处理装置应用基础研究", 《中国优秀硕士学位论文全文数据库（工程科技Ⅰ辑）》 * |
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Application publication date: 20150107 |
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| WD01 | Invention patent application deemed withdrawn after publication |