Cutting thickness exceeds the cutting nozzle overload CNC plasma cutting machine electrode cutting nozzle loss has been a sensitive problem for many companies. According to the experience of the company's on-site service for many years, many companies' cutting nozzle loss is not normal, here We have sorted out several problems that are likely to cause excessive loss of the cutting nozzle as follows, and propose several solutions to the above problems.
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1. Cutting thickness is exceeded When the CNC cutting machine is purchased, the manufacturer will recommend the appropriate plasma power supply and cutting nozzle model according to the processing requirements of the enterprise. This is not only to reduce the procurement cost, but also to optimize the cutting effect. However, many companies purchase the cutting machine, due to business adjustment or operational negligence, the thickness of the material to be cut will exceed the allowable range of power supply and cutting nozzle, which will have a greater impact on the electrode cutting nozzle and plasma power supply. In general, the cutter cannot be perforated on a steel sheet that exceeds its working thickness, and the usual perforation thickness is 1/2 of the normal cut thickness. For example, if the 100A plasma system is to cut 1 inch (about 25 mm) carbon steel, the system should have a perforation thickness of 0.5 inches (about 12.5 mm).
2, cutting nozzle overload Many companies in the use of CNC plasma cutting machine, like to drive the current intensity of the power supply to the right, even if the thickness of the cutting material does not reach the upper limit of plasma power cutting, but in order to improve cutting speed and efficiency, it is still 100 The % current intensity works, which causes the electrode nozzle to be overloaded (ie, exceeds the operating current of the nozzle), which can cause the nozzle to be damaged quickly. Generally speaking, the current intensity should be 95% of the nozzle operating current. For example, the current intensity of the nozzle of 100 should be set to 80--60A.
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