In foreign countries, although CNC cutting machine occupies most of the market, most companies in China still use manual cutting machines, semi-automatic cutting machines, and imitation cutting machines. With the development of economy, CNC cutting machine is gradually replacing these products, then why CNC cutting machine gradually takes up the cutting machine market? Xiaobian lists the features of CNC cutting machine processing:
First, high precision, high reliability CNC cutting machine is processed according to instructions given in digital form. Under normal circumstances, no manual intervention is required in the working process, which eliminates the error caused by the operator. .
Second, strong adaptability Strong is the most prominent advantage of CNC cutting machine. Adaptability, the so-called flexibility, is the ability of an index-controlled machine tool to adapt to changes in production objects. .
Third, the high production efficiency CNC cutting machine structure is good, allowing a large amount of cutting power processing, thus improving the CNC cutting machine processing efficiency.
Fourth, good economic benefits In the single-piece, small batch production, the use of CNC cutting machine processing can reduce the adjustment, processing and inspection time, saving direct production costs. The precision of the CNC cutting machine is stable, the scrap rate is reduced, and the production cost is further reduced.
Fifth, can process complex workpieces The CNC cutting machine can realize the movement of almost any trajectory and processing any shape of the workpiece, suitable for the processing of complex and irregular parts.
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The boiler water wall is the main radiation heat surface, arranged inside the boiler chamber and proceeds the heat exchange directly with the high temperature flame. The convection tubes are the convection heat surface of the boiler, arranged between the boiler chamber outlet and the end heat surface and proceed the heat exchange directly with the high temperature fume. The water wall and convection tubes are the main heat surface of the boiler, the tubes diameter for both generally usedΦ 51-60mm boiler steel tubes, also as the request.
The first type is the bare pipe water wall. This is the simplest structure of the water wall. The advantage is that ordinary seamless steel pipes can be used, and it is more convenient to replace the water wall pipe. The disadvantage is that the temperature of the furnace wall is still high, and heavy refractory bricks are required. The steel frame of the corresponding boiler should be strengthened. , The air leakage of the furnace wall is relatively large. Old-fashioned high-pressure boilers and medium and small boilers are used more frequently.
The second tupe is the membrane water wall. The membrane water wall is welded by seamless steel tubes with fins. The Water Wall Tubes are connected by fins to make the water wall into a whole. This kind of water wall is called a membrane water wall. Its function is to strengthen the heat transfer of the water wall and greatly reduce the temperature of the furnace wall. The furnace wall does not need refractory bricks, but only requires thermal insulation materials. Compared with the conventional heavy furnace wall, the weight can be reduced by 60% ~ 70%, the furnace wall heat storage is reduced by 80%, the start and stop time is shortened, and the fuel consumption is reduced. The load of the furnace steel frame is greatly reduced, saving refractory materials and steel.
The third type is the pierced pipe water wall. The barbed pipe water wall pipe is made by welding many grab nails with a length of 20 to 26 mm and a diameter of 6 to 12 mm on the water wall pipe. It is mainly used to lay the gas belt. Generally, for boilers that burn fuel with low calorific value and low volatile content, in order to stabilize the fire, pierced pipe water walls are often used for laying the fire protection belt.
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