[introduction] as the traditional cutting equipment, mainly (NC and NC) shearing machine, punching machine, flame cutting, plasma cutting, high pressure water cutting means and so on. These devices occupy a large market share in the market, they are a familiar, two is cheap, although they are relative to the laser cutting process for modern disadvantages is very obvious, but they also have their own unique advantages.
A, (NC) shears
Because it is a straight line cutting, although a knife 4 meters long sheet, but it can only be used in sheet metal processing requires only linear cutting on. Generally used in Kaiping after the cut, such as the need for a straight cut in the industry.
Two, (CNC / turret) punch press
There is more flexibility in curve machining, a punch can have one or more sets of square and circular or other special requirements of the punch, can a certain processing of sheet metal parts, the most common is the cabinet industry, processing their requirements mainly such as straight lines, square hole cutting the pattern is relatively simple, round, fixed. Is the main face of carbon steel under 2mm format, usually in 2.5m× 1.25M. Thickness of more than 1.5mm of stainless steel due to the material viscosity is too large to compare the cost of mold, generally do not use the punch.
The utility model has the advantages of simple graphics and sheet processing speed, the disadvantage is punching steel plates of limited capacity, 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. Foreign steel plate over 2mm cutting generally use more modern laser cutting, without the use of a thick steel plate punching machine, the surface quality is not high, the waste is washed two punch, thick steel plate needs more tonnage of resources, three red thick steel plate with too much noise, bad for environmental protection.
Three, flame cutting
As the original traditional cutting method because of its low investment, in the past to the processing quality requirements are not high, the requirements are too high to add a machining process can be resolved, the market has a very large amount of. Now it is mainly used to cut the thick steel plate which is more than 40mm. It is the shortcomings of cutting heat cutting deformation is too large, too wide, waste material, and processing speed is too slow, only suitable for rough machining.
Four, plasma cutting and fine plasma cutting
Precision plasma cutting and flame cutting is similar to the heat affected zone is too large, the accuracy is much larger than the flame cutting, speed also has an order of magnitude leap, has become the main force in the plate processing.
CNC precision plasma cutting machine of the domestic top precision of the actual cutting line has reached the limit of laser cutting, reached a speed of 2 meters per minute in the 22mm carbon steel plate cutting, and the cutting surface smooth, can be controlled within 1.5 degrees. The best. The disadvantage is in the cutting of thin steel plate when the thermal deformation is too large, too large inclination, the precision is incapable of action more expensive consumables.
Five, high pressure water cutting
High pressure water cutting is the use of high-speed water jet cutting of sheet metal doped corundum implementation, it almost no restrictions on the material, the cutting thickness is almost up to 100mm or more, easy to burst with Thermal Ceramics and glass cutting material can be cut, such as copper and aluminum can be cut by laser reflection materials and laser cutting water jet, there is a greater obstacle.
The water cutting processing speed is too slow, too dirty, not environmental protection, high consumables.
Six, laser cutting
Laser cutting is a technological revolution in the process of processing. Laser cutting flexible degree, high cutting speed, high production efficiency, short production cycle, for customers to win a wide range of market. Laser cutting and no cutting force, no deformation; no tool wear material, 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 automatic cutting like, nesting, improve material utilization, low production cost, good economic benefit. The effective life of the technology is long, at present, the foreign structure of 2 mm plate mostly using laser cutting, many foreign experts agree that the next 30-40 years is the golden era of laser processing technology development.