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溶接システム BOC Smoothcut Plasma 40のPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。BOC Smoothcut Plasma 40 20 ページ。
BOC Smoothcut Plasma 40 にも： 取扱説明書 (20 ページ)
ページを印刷する2.0 Smoothcut Plasma Cutters
Typical Plasma Cutting Set-Up
Main power supply
Amperage
control knob
Torch connector
Plasma Torch
Workpiece
2.1
Fundamentals of Plasma Cutting
A plasma can be created by adding energy to an electrically neutral
gas. In the case of air plasma cutting the air is dry, clean compressed
air delivered from an air compressor or an air line. By adding electricity
through an electrode (Hafnium), the gas becomes imbalanced and
conducts electricity. The greater the level of electricity the higher the
temperature of the plasma.
Plasma cutting torches control energy by constricting the arc and forcing
it through a constricting nozzle fitted to the torch. By increasing air
pressure and intensifying the arc with higher voltages, the arc becomes
hotter and more capable of blasting through thicker metals and blowing
away the cuttings, leaving minimal cleanup.
Cross Section of Plasma Torch
Power On/Off
switch (on back)
Pressure regulating
control valve (on back)
Air compressor
(sold seperately)
Airflow
Air supply hose
Constricted Plasma Stream
Work lead
and connector
2.2 Process Operation
• Compressed air flows through the torch.
• A pilot arc is established inside the head of the plasma torch.
• The high voltage of the pilot arc changes the air stream into a
plasma stream.
• The plasma stream is constricted and forced through a tip with a
small orifice.
• The constricted plasma stream exiting from the tip is termed a
plasma jet.
• The plasma jet is allowed to touch the work.
• An arc is initiated between the hafnium electrode and the work.
• The arc passes through the orifice of the tip.
• The constricted arc so formed is a stiff, columnated and narrow arc.
• The intense heat of arc melts the plate.
• The plasma jet blows away the metal to produce a cut.
BOC Smoothcut Plasma 40 Operating manual
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Electrode
Constricting nozzle
Workpiece