Laser solders to be applied mediumly in auto industry

The technical feasibility laser that laser beam welding receives (suffer stimulate radiation light) the basiccest characteristic is: Monochromatic sex, directional, dependency, these unique character are added from this and the freeboard brightness that come, exceed the property such as short pulse to make it already closely be united in wedlock together with modern industry, these are very idiosyncratic suit to solder treatment. The working material that laser presses generation laser commonly is different will classify, basically have semiconductor (GaAs, inP) laser, solid (Nd:YAG) laser, gas (CO2, He-Ne) laser, liquid (adjustable humorous dye) laser, chemical laser, free electron laser. Among them aeriform laser is glow particle with gas or metallic vapour, it is current phyletic and most, most appearance changes incentive way, laser wavelengh distributinging area is the widest, easy implementation high-power is outputted continuously, use a kind of the most extensive laser. Solid laser is the particle mix into that will produce laser at solid matrix, its chroma is bigger than gas, can obtain bigger laser consequently energy out-put, have energy big, peak value power is high, the orgnaization is compact, firm and durable wait for a characteristic. In laser beam welding these two kinds basically are used to suffer the laser that stimulates material in receiving. Laser beam welding receives a technology to grow steadily in the application of production domain, arrive by pulse successive, you Xiaogong leads high-power, arrive by thin plate thick, seam complex form by simple sheet, laser beam welding receives the modern treatment engineering technology that has made a kind of maturity stage by stage in ceaseless evolution process. Laser beam welding receives cent to solder with successive laser for pulse laser, can divide again in soldering continuously conduct for heat solder and deep penetrable solder. Rise as what laser outputs power, especially the occurrence of laser of high power CO2, deep penetrable technology was in laser to get domestic and internationally developing quickly, the biggest solder deep wide than achieving 12:1, laser beam welding received material to also develop by general mild steel today's solder plating zine plate, aluminium board, titanium board, copperplate and material of pottery and porcelain, laser beam welding received speed to also be achieved minutely a few meters, laser beam welding receives a technology to mature increasingly, apply to product line in great quantities, solder like gear on car product line, car motherboard and structural member (include door automobile body) high speed spells solder and already gained huge economy and social benefit. According to concerning data statistic, industrial state home is amounted to in Euramerican hair in, the car component that has 50%-70% is finished with laser beam machining. Basically solder with laser among them to advocate peace cut is given priority to, laser solders to already made standard technology in auto industry. Laser uses at automobile body face plate solder but will different ply and the plate solder that have film of different face besmear are together, undertake punch again next, the face plate structure that such become making can achieve the most reasonable metal to combine. The rate that laser beam welding receives is about 4.

5m/min, and be out of shape rarely, leave out fabricating. Laser beam welding is received quickened replace with punch spare parts forging the process of the spare parts. Use laser beam welding to receive, can decrease build receive width and a few reinforce a part, return the volume that can reduce itself of automobile body structural member. Only the weight of this one automobile body can reduce 56kg. Laser beam welding is received use at roof crust and frame to solder, of transmission converter cover board solder, by CNC control, its cycle time is 16 seconds about, actual weld time is 3 seconds only, one day can move 24 hours continuously. Use at soldering the gear-box assembly of sedan and batholith, stimulate beam of light solder rate is rapid, easily automation is controlled and easily add up arrives in a flexible production system, stimulated beam of light to improve the cycle of products plan put into production of manufacturer, reduced the percent defective of finished product. 2.

It is OK that laser beam welding receives the application in automobile industry to use laser beam welding to receive bring enormous economic benefits to automobile manufacturing industry, if automobile body assembles a large number of medium spot welding, place two solder head on workpiece brim to undertake soldering, flange width needs 16mm, and laser beam welding is received is unilateral solders, need 5mm only, should be spot welding laser beam welding, every car can save rolled steel 40kg. Solder with traditional spot welding two 0.

The armor plate stamping workpiece of 8mm, average was at 20 o'clock / Min, solder is apart from is 25mm, namely speed is 0.

5m/min, with laser beam welding speed can achieve 5m/min above. Use laser beam welding to receive a technology, reduce cost not only, still improved manufacturing efficiency greatly. Current, the system of robot of laser beam machining of class of a kilowatt wants hundred thousands of dollar only, the security of new-style laser and dependability also got assuring, its breakdown stops machine rate only 2% , preventive measure is very reliable also. Interface of workpiece of the need when laser beam welding is received is close together be identical, this is not easy implementation on craft, but at present advanced clip holds method and the flange design that suit laser beam welding to receive to make this one problem gets understanding definitely, laser beam welding receives a technology mature gradually make each big car manufacturer does not have one exception use come to sb's aid of laser beam welding to car product line. The United States is the earliest laser of will high power introduces auto industry, in American auto industry heart Detroit area has more than 40 laser beam machining to stand, use at car metal of cut and gear solder, make the remodel of the car shortens from 5 years. Company of American general motors has introduced product line of 22 laser beam machining, american Ford Motor Corporation uses Nd:YRobot of industry of AG laser union solders car bodywork, reduced production cost greatly, the product line of resistor spot welding that 3 big Motor Corporation of American had had 50% 2000 is replaced by product line of laser beam welding. Be in Japan, laser beam welding receives successful on product line application to be fixed eyes upon for world place, if be made in car bodywork,will thin stencil steel is used to implement the new method that the punch after laser beam welding is received shapes in building, already went up for the world now place of most car manufacturer is imitated. Very much famous Motor Corporation builds on the world special laser beam welding receives special product line: The car motherboard of Thyssen steely company spells solder product line, the product line of gear laser beam machining of masses car plant, there were 8 workshops to install equipment of laser beam machining in 18 workshop of Benz factory. Laser beam welding is received basically is most in auto industry apply in car automobile body solder with joining together base board solders on. To satisfy the requirement of the market and client, improving automobile body and workmanship is very necessary, and the 1/5 that the automobile body value of the car occupies car total prices to be worth about, use laser beam welding to receive craft to make the impact resistance of automobile body and fatigue resistance can get marked improvement, improve the quality of the car. Because use the computer to control,laser beam welding is received, have stronger flexibility and maneuverability so, can wait for component to the door plank with special appearance, fender, gear, dashboard solder, also can finish roof and side wall, start frame and radiator to wear those who wait for a component to assemble, if add glazing fine to transmit system and manipulator, the car that can implement automation assembles product line. What use 3KW controls is fiber-optic transmission ND:YAG successive laser, coordinate spot welding system, the clamping apparatus that goes up with product line closes suitably, with respect to the goal that can achieve automation to solder, general, run quickly on the product line that waited to use this one system to apply in newest model, laser beam welding receives a system to be able to achieve the requirement of perfect treatment almost, there is outstanding show on efficiency, economy, safe, intensity, corrosion resistance. The automobile body of a car and batholith are comprised by the spare parts of 300 kinds of above, it is almost OK to use laser beam welding to receive solder all material that do not distribute ply, brand, phyletic, grade together, make the part of all sorts of appearance, increase the flexibility that the car designs greatly. Joining together base board optimize a component to design on the foundation that analyses automobile body structure adequately namely, those who make is OK base board solders and become by a few kinds of models of a few, reduced mould amount greatly so, added overall material utilization factor, and the base that can ask in intensity different position uses different ply board, can punch shapes, reduced weight, raised precision, still make corrosion resistance and safety performance have rise substantially, automobile body structure also simplifies greatly. The side wall product line of abundant field company used joining together base board solders technology, make the amount of the mould falls 4, overall material utilization factor is achieved 65% , add the part of other, make the cost of every car drops 30 much beauty are round, increase a car to produce the beneficial result of business greatly. 3.

Laser beam welding receives technical foreground laser beam welding to receive a technology to solder to traditional car the influence that craft brought concussion sex, each are big Motor Corporation holds very positive attitude to this, use new technology to mean stronger competition ability, compete especially brutal auto industry. Laser beam welding receives a technology soldering aluminous material, the applied future that replaces cast and structure of structural frame of whole automobile body to solder with weldment is the greatest, laser produces manufacturer to should seize business chance, make great efforts in the respect such as the removability of laser, bulk, consumed fine transmits laser, make laser fits the need of car product line more. A few laser products of domestic produce manufacturer to had realized this gradually, for instance Hubei light connects the pulse Nd:Y that photoelectricity system limited company producesAG laser beam welding receives focusing of coupling of fine of engine profit consumed, use convenient, laser head can be far from weld zone, laser function is stable and reliable, life is long, also can use traditional optical and traditional system, laser already can laser solders, OK also Laser Cutting and stiletto, one machine multipurpose, special apply to workshop of laser beam machining and automation product line. 21 centuries auto industry is being entered can ask to undertake according to the user flexible the kind that module type produces, conventional treatment craft cannot satisfy a new student to produce the need of means, this received large-scale application of the technology to offer an opportunity to laser beam welding, it is certain in car domain that laser beam welding receives technology of technical etc laser beam machining can have greater progress, become the important treatment method in auto industry. CNC Milling