With the rapid development of sheet metal processing, domestic processing technology is changing with each new day, the gap between foreign countries and become smaller and smaller, many well-known foreign companies have manufacturing base will be transferred to China, at the same time, also for the sheet metal processing brought many revolutionary concept.
As the traditional sheet metal cutting equipment, mainly (NC and non CNC shearing machine, punch, flame cutting, plasma cutting, high pressure water cutting, and other means. These devices in the market occupies a considerable share of the market, on one hand, they cooked is known, second is cheap, although their relative to the laser cutting and other modern process is concerned, the disadvantages are obvious, but they also have their own their own unique advantages.
(NC) shear due to its major is cutting a straight line, although a cutlery for up to 4 meters of sheet metal, but it can only be used on requires only linear cutting of sheet metal processing. Generally used in Kaiping plate after cutting requires only linear cutting industry.
(CNC turret punch /) have more flexibility in curve machining, a punch can have one or more sets of square, round punch or other special requirements, one can produce some specific sheet metal parts, the most common is the cabinet industry, they are the main processing requirements straight, square hole, round hole cutting and the like, the pattern is relatively simple. They fixed is the main face of carbon steel under 2mm format, usually in the 2.5m * 1.25M. with a thickness of more than 1.5mm stainless steel material viscosity is too large due to cost is generally not to die, punch. The utility model has the advantages of simple graphics and sheet processing the disadvantage is fast, punching thick steel plate when capacity is limited, even if the surface of the workpiece is also washed collapse, fee mold, mold development cycle is long, high cost, flexible level is not high enough. The foreign plate is more than 2mm the cutting process generally With a more modern laser cutting, without the use of punch, a thick steel plate punching surface quality is not high, rushed thick steel plate requires a greater tonnage punch, waste of resources, three rushed thick steel plate when the noise level is too high, is not conducive to environmental protection.
Flame cutting as the original traditional cutting mode because of its low investment, past on the processing quality requirements is not high, the requirements are too high and a machining process can be solved, the market retains the quantity is very large. Now it is mainly used to cut more than 40 mm thick steel plate. The disadvantage is cutting thermal deformation is too large, slotting is too wide, material waste, moreover processing speed is too slow, is only suitable for rough machining.
Plasma cutting and fine plasma cutting and flame cutting is similar to that of the heat affected zone is too large, but the measurement precision than the flame cutting many big, speed magnitude leap, become the main force of the plate processing. Domestic top precise CNC plasma cutting machine of actual cutting precision of on-line has reached the lower limit of laser cutting, 22mm carbon steel cutting reached more than 2 meters per minute speed and cutting surface smooth slope best can be controlled within 1.5 degrees, the disadvantage is in cutting thin plate thermal deformation is too large, slope is larger also, require a high degree of precision in the powerless, consumables is more expensive.
High pressure water cutting is using high speed water jet in doped corundum implementation of sheet metal cutting, it on the material almost no restrictions, cutting thickness is almost up to 100 mm or more, of ceramic, glass cutting heat easily burst of material cut, copper, aluminum and other laser with high reflectivity material water jet is can be cut, and laser cutting has a bigger obstacle. Defect of water cut is processing speed is too slow, too dirty, not environmental protection, consumables is higher.
Laser cutting is a technology revolution in sheet metal processing, is the process of sheet metal; laser cutting machining center. A high degree of flexibility, fast cutting speed, high production efficiency, short production cycle, won the broad market for customers. Laser cutting and no cutting force, no deformation; no tool wear materials good adaptability; whether it is simple or complex parts, can be cut with a precision of laser rapid forming; the narrow kerf, good cutting quality, high degree of automation, simple operation, low labor intensity, no pollution; can realize cutting automatic nesting, nesting, improve material utilization, low production cost. Good economic benefits. The technology of the long effective life period, sheet at present super 2 mm mostly adopts the structure of laser cutting, many foreign experts agreed that the next 30-40 years is the golden period of development of laser processing technology (sheet metal is added The direction of the development of the industry.