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Maintenance method of plasma cutting machine consumable parts

Views: 1     Author: Site Editor     Publish Time: 2022-01-07      Origin: Site

                                         Maintenance method of plasma cutting machine consumable parts


The maintenance of consumable parts is very important for machinery. If the maintenance work is done, the service life of the corresponding plasma cutting machine will also be extended. Here are several effective maintenance measures:


1. Ensure the correct air pressure and flow of the plasma

The correct gas pressure and flow of the plasma are very important to the service life of consumable parts. If the air pressure is too high, the life of the electrode will be greatly reduced; if the air pressure is too low, the life of the nozzle will be affected. Refer to the instruction manual of the plasma cutting machine when setting.


2. Use a reasonable cut distance

The cutting distance is the distance between the cutting nozzle and the surface of the workpiece. This distance should be kept as constant as possible, generally around 3-8MM. Too far not only consumes too much power, the cutting penetration ability will decrease, but also consumes the electrode relatively, so that the electrode can be used. Life expectancy is reduced; if it is too close, it is simpler and very expensive nozzle. The service life of the nozzle will decrease exponentially, even if it is installed, it will be burnt;

When perforating, try to use twice the distance of the normal cutting distance or use the maximum height that the plasma arc can transmit.


3. The perforation thickness and cutting thickness should be within the allowable range of the machine system

The plasma cutting machine cannot perforate the steel plate that exceeds the working thickness. The usual perforation thickness is 1/2 of the normal cutting thickness. Try to cut within the rated normal cutting thickness range of the plasma cutting machine, and try not to cut at the limit cutting thickness. The normal cutting thickness of the domestic cutting machine is generally 60% of the maximum cutting thickness marked by the manufacturer. Try to cut within this thickness range , Can best protect the cutting nozzle.


4. Do not overload the nozzle

Overloading the nozzle (that is, exceeding the operating current of the nozzle) will quickly damage the nozzle. The current intensity should be 95% of the nozzle's working current. For example: the current intensity of a 100A nozzle should be set to 95A.


5. Keep the plasma gas dry and clean

The plasma system needs dry and clean plasma gas to work properly. Dirty gas is usually a problem in the gas compression system, which will shorten the service life of consumable parts and cause abnormal damage. The method to test the gas quality is to set the cutting torch in the test state, and place a mirror below it to consume the gas in the cutting torch. If water vapor and mist appear on the mirror, you need to find out the original.


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