How to evaluate the quality of CNC plasma cutting machine?
It can cut various workpieces with complex shapes, and has the advantages of fast cutting speed, high efficiency, good cutting surface quality, accurate cutting size, and small thermal deformation of the workpiece.The cut parts can be welded and applied directly without machining.However, the CNC plasma cutting machine uses plasma arc to cut. Compared with oxygen cutting, it still has certain defects, mainly reflected in the larger inclination of the cutting surface, and the finish is not as good as oxygen cutting.The main criteria for evaluating the quality of CNC plasma cutting are: the inclination of the cutting surface, the depth of the cut pattern of the cutting seam, and the amount of dross.

How to evaluate the quality of CNC plasma cutting machine?

The inclination of a good cutting surface should be below 30, the cutting depth should be below O.15mm, and there is less dross and easy to remove.Under the conditions of stable voltage and current, in addition to the quality of the electrode and the nozzle itself, the factors that affect the cutting quality are mainly due to two reasons: one is the height and stability of the cutting nozzle; the other is the matching of the cutting speed and the working air pressure.When the height of the cutting nozzle from the steel plate is controlled by an arc voltage height controller, its dynamic positioning accuracy can reach ±0.013, so it can ensure that the height of the cutting nozzle and the steel plate remains unchanged, so the inclination of the cutting surface is small and uniform.And the finish is good.When manually adjusting the height of the cutting nozzle from the steel plate.The steel plate to be cut should be placed as flat as possible to reduce the number of torch adjustments.Ensure the stability of the cutting torch during cutting.In this paper, manual adjustment is used to control the height of the cutting nozzle from the steel plate at 6～8

Through a series of cutting experiments, the relationship between cutting speed, working air pressure (P) and cutting quality is explained.

Through analysis and summary, the optimal cutting parameters for cutting steel plates of different thicknesses with different powers are obtained.Provide reference for improving the cutting quality of CNC plasma cutting machine.

CNC plasma cutting machine is a kind of advanced mechatronics equipment used for blanking and cutting of sheet metal. It has been applied in shipbuilding, machinery manufacturing and other industries.There are many factors that affect the cutting quality of a CNC plasma cutting machine. In addition to the design parameters of the cutting machine, it is also related to operation control and cutting technology.In order to improve the cutting quality, we conducted a comprehensive cutting test, analyzed and sorted out the test data, and obtained some excellent working parameters of the CNC plasma cutting machine.The description is as follows:

How to evaluate the quality of CNC plasma cutting machine?

Test method: The test equipment is one air plasma cutting machine with four different powers, and each model has six sets of electrodes and nozzles.Install the cutting torches of the four air plasma cutting machines on the cutting trolley of the CNC cutting machine in sequence.Each type of air plasma cutting machine must complete the whole process of all tests individually, that is, use different cutting speeds and different air pressures to cut'A3 steel plates of different thicknesses (cooled with tap water).Cutting is carried out gradually from low air pressure to high air pressure, from low speed to high speed.The air pressure is adjusted by the filter control valve, and the cutting speed is controlled by the CNC cutting machine.The cut part is a 100×100 mm square part.When the cutting speed is too high and the air pressure is too low, the inclination of the cutting surface is large.This is because the speed is too fast, the arc column tilts back seriously, and the melting speed of the lower half of the slot cannot keep up.Therefore, the plane size of the cut part is small.The size of the lower plane is large, especially when cutting right-angled parts. The bottom of the corner is slit into a circular arc instead of a right angle.If the cutting speed is too low and the air pressure is too high, the dross will be serious, difficult to remove, and the finish will be poor.If the cutting speed is appropriate and the working air pressure is too high, the stiffness and roundness of the arc column will be damaged, and the cutting ability will decrease. The cutting finish is poor.Therefore, to cut steel plates of different thicknesses, different cutting power, cutting speed and working air pressure need to be selected reasonably to obtain good cutting results.According to the test results of four different power models, the optimal cutting parameters of different power cutting machines for cutting steel plates of different thicknesses are shown.According to these data, we have carried out practical cutting in some manufacturers, and the effect is very good, and the cutting quality is greatly improved.

We know that there are many factors that affect the cutting quality of CNC plasma cutting machines. In addition to the parameters mentioned above, there are also many factors such as cutting process, cutting method, and the quality of the electrode nozzle.But in the actual cutting process.As long as you cut according to the cutting parameters provided above, and control the cutting speed, working air pressure and the height of the cutting torch, you can meet the cutting quality requirements.When the cutting voltage and cutting current are stable, the service life of electrodes and nozzles can be doubled.Ruiling Technology focuses on the development and production of flame cutting machines, CNC cutting machines, portable cutting machines, plasma cutting machines, and fiber laser cutting machines. Welcome to consult at any time and we will serve you wholeheartedly。