发明名称 |
FORFARANDE OCH ANORDNING FOR REGLERING AV EN PLASMABAGE VID PLASMASKERNING |
摘要 |
To control the plasma arc in accordance with the present invention, the pressure change characteristics or curve in a torch is determined from the moment a plasma forming gas is delivered thereto until this plasma forming gas reaches the pressure in the supply manifold. Such a measurement is done for each selected cutting condition characterized by a constant flow rate of the plasma forming gas. The arc supply current is then fed in two stages: at first by a jump to a current amounting to approximately half the cutting current for a selected condition and then by gradually increasing the current in compliance with the pressure change characteristics or curve until the cutting current value is attained. Also described is a device to realize the method, comprising a torch pressure sensor, a means for shutting off the torch nozzle, a memory unit registering the signals of the pressure sensor and a rectifier regulator control means which controls the regulator in accordance with the sensor signals recorded in the memory unit. |
申请公布号 |
SE425298(B) |
申请公布日期 |
1982.09.20 |
申请号 |
SE19760003205 |
申请日期 |
1976.03.11 |
申请人 |
INSTITUT ELEKTROSVARKI IMENI E O PATONA AKADEMII NAUK U.. |
发明人 |
E M * ESIBYAN;M E * DANCHENKO;V B * MALKIN;V D * DOTSENKO;G B * ASOYANTS |
分类号 |
B23K9/073;B23K10/00;(IPC1-7):23K28/00 |
主分类号 |
B23K9/073 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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