HUAYUAN SLG-200HF, Manual Instruction, Page: 30 / 53

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switch is placed in the "cutting" position.
The operation of cutting pressure regulating filter on power back plate as follow:
When adjust the pressure, firstly pull up the gas pressure regulator valve knob, then rotate. Left rotation is to reduce
export pressure; right rotation is to increase the export pressure. After pressure adjustment, press regulating valve knob to
position. Regularly check the drainage of pressure regulating filter, when the water level reaches to the two third of the
filter cup, must be drained, otherwise it will affect the quality of incision. Water supply valve should be closed during
drainage, and select "check gas" function in panel, when the voltage table of pressure regulating filter indicating value is
zero, water will be automatically discharged from the mouth of the drainage.
When using oxygen as the plasma gas, the user should be equipped with high quality oxygen pressure regulator to
adjust the output pressure or flow of oxygen to satisfy the cutting requirements.
13. Optimize the cutting quality
Following points can get better cutting quality on cutting vertical, slag and smooth
1
、
Notice for use cutting table and torch
⑴
Check the vertical of the torch
⑵
Clean the rail and transmit device on the cutting table to get smooth torch move. If not stable will cause cutting
roughness
⑶
Cutting torch can;t contact with the workpiece, or it will damage the protection cap and nozzle, cause cutting surface not
smooth.
2
、
Shield gas set
Check carefully according to the”inspection before start”process
Blow the gas hose before cut
3
、
Lengthen the wearing parts life
⑴
Don’t strike torch arc without workpiece
Can strike arc on side of the workpice, but don’t strike without workpiece
The piercing height should be 1.5-2 times distance from torch to workpiece should be
⑵
Make sure the cutting arc is on the workpiece after cutting finish to avoid arc off
⑶
If cutting arc off, try the following:
Lower the cutting speed when cut near finish
Stop cutting when workpiece near finish, the current and gas flow reduce gradually can finish the cut
Edit the routine for torch run into the waste parts so that can use the current and gas gradually reduction.
Note: if possible, use the chain cutting method, then the torch can continuous cut along with the cutting route without
stop.but for too long time chain cut will cause electrode loss
4
、
Other factor influence cutting quality
⑴
Cutting corner