The Application Domain of the Laser Processing Equipment

Laser Beam has a serie of advantages such as, Sign engraving, good monochromaticity, high energy density, leather engraving, good control about the space and time. At present it is widly used in the material processing region. The laser processing industry includes automobile manufacture, aeronautics and astronautics, electronic, chemical, packing and medical equipment, etc. Combined with the computer number control technology, the laser processing technology has become the crucial technology in the industrial production automation, having the big superiority that the common processing technology can't compare with. For example, the laser processing is the none-touch processing with faster speed and none-noise, which can achieve the high precision processing purpose of various products with complicated shaps, moreover, it won't have the “cutter” abrasion phenomeon and we don't need to change the “cutter”. The global laser processing market is promising, as estimated it is ascending at the speed of 20-30% every year.

1. Multipul branches PCB laser microchannel puncturing technology

In recent years, the laser technology has been widly used in the high density printing circuit board microchannel puncturing and chip packaging equipment, the newest world microchannel puncturing information demonstrate that more than 300,000 square meters high density multilayer printing circuit board is punched by laser. The early laser puncturing equipment for PCB microchannel puncturing is single UV YAG laser engraving machine or single CO2 laser engraving machine. Because the requirements of micro-channel punch output rising, Many manufacture factory starts to develop double-head laser puncturing equipments. In the current market the three main double-head laser puncturing equipments are: double-head CO2 laser system, double-head UV laser system, mixed laser system( UV and CO2).

There are two kinds of more economical laser technologies are used for PCB board microchannel puncturing: CO2 laser, wavelength is in the distant red dot region whose puncturing diameter is 100 micro. W laser wavelength is in the ultraviolet region, which is widly used in this situation whose puncturing diameter is 100 micro or hole diameter is less than 50 micro.

In the ultraviolet laser technology, the semiconductor Pumping UV laser machine has become the standard laser machine in the industry application, it can increase the monopulse energy that transmitted to the surface of workpiece.

2. Laser welds the plastic

1. Along with the laser welding plastic's advantages are widly used in the components design and manufacture of the automobile, medical equipments and electronic industry, high power optical fiber laser plastic welding system can fully meet the fast, effective and clean plastic welding way in the plascic products' processing.

In the current domestic market, the commonly used plastic welding technologies are vibration friction welding, heat plate plastic welding and ultrasonic welding which are mainly used in connecting the sensitive plastic products(involve circuit board), plastic parts with complicated geometry and plastic products with strict cleanliness requiremen( medical equipment) and so on. The optical fiber laser welding plastic technology has the following advantages:

(1) It can creat the precise, tight and airtight (stuffiness and water-tight) welding, less resin degradation and less detritus.
(2) It is easy to control and have good adaptability, it can weld the workpieces with small size and complicated outlines.
(3) Tremendously reduce the vibratory stress and thermal stress of products.
(4) It can weld various of materials together. Laser plastic welding technology has been used in the occident developed countries but our country still doesn't apply the technology at present.

2.The welding methods that being used in the plastic laser welding
The basic principle that laser welds plastic is two kinds of plastics are clamped together by low pressure, the laser pass one product and it is absorbed by another product, the product that have absorbed the laser energy transform the light energy to heat energy and it is melt on the contact surface of plastic, then make a weld zone. The commonly used welding methods are as following:

a. The laser beam scan quickly along the commissure, in order to achieve the welding purpose.
b. Shaping the laser beam through the optic elements and generate energy at the commissure at the same time.
c. Illuminate mask welding, the laser beam only heat the product’s part that doesn’t been covered by the mask, which can weld the complicated seam quickly.
d.Fix the laser beam, put the plastic workpiece on the multidimentional moving working table that controlled by the program.

3.High power optical fiber laser machine’s application in the ship manufacturing

1.The application advantages of laser processing technology in the shipping manufacturing The main merits of laser processing in the shipbuilding industry:

(1) The ship carrying capacity is increasing and it requires much thinner panel, the laser welding can avoid the heat affecting when processing.
(2) The laser can adopt flexible output manner like optical fiber, so the big size workpiece such as deck and hull can not be affected by the dimension of worktable.
(3) None-touch, fast speed, smooth edge, high speed automation can significantly reduce the shipbuilding cost and time.

2.The developing situation at home and abroad

The main large-scale shipyards in Western and Japan have substantially adopted the laser processing technology. At present, some areas in America and Europe are developing tbe processing equipments of the high power optical fiber laser industry, what is under development is the repeatedly development of the processing equipments of the 2KW and 6KW output industrial-level optical fiber laser machine. Our country has developed middle and low power series industry optical fiber laser machines, but the processing application of high power optical fiber laser machine industry is still blank, in our shipbuilding industry almost hasn’t adopted the laser processing technology.

3. The advantages and prospects of the high power optical fiber laser machine in the shipbuilding manufacturing industry.

The optical fiber laser engraving machine is the concerned hot spot in the laser domain in recent years. There is a tendency that the optical laser machine will quickly replace the traditional YAG and CO2 laser engraving machine in the processing domain. People generally agreed that the high power optical fiber laser machine will be the third generation most advanced industry processing laser machine.

Optical fiber laser engraving machine has many unique advantages, such as good quality light beam, small volume, light weight, maintenance free; easily operated air cooled system; low woking cost, can be used in the industry enviroment; long life and high processing precision, fast speed; high efficiency of the electric energy and can realize intelligentization, automation and nexibility operation. Based on the above advantages, its application domain has extended to the metal and non-metal materials’s laser cutting, laser welding of the automobile manufacture, shipbuilding and aviation industry.

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