Laser technology: Machine the new channel of high strenth steel

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  • source:GERHOLD CNC Machining
Car manufacturer more and more the treatment processing that relies on laser technology to undertake high strenth steel. No matter be to be used at soldering, cut or it is finishing, the economic advantage of laser beam machining all gets be reflectinged further. High strenth steel receives wider and wider application in auto industry, this makes the production cost of the car farther reduce. Its reason depends on, the use of high strenth steel reduced a car to assemble the amount of the component in link, because this reduced manufacturing cost, reduced truckload weight, make finally the fuel of the car is used up be able to reduce. Laser v applies -- exterior wear-resisting processes new-style rolled steel use be not plain sailing, without any obstacles. To acquire high strenth or property of extra high strength, undertake to car component during shape pressure sclerosis is handled normally. The mould that Austrian case pulls college of Ci grain industry and shape the institute undertakes " Cool Tool " the research that the project had this side just about. This plan included a sclerotic to pressure process to undertake the mould of microtherm temper processes a system, this system uses the technology that the course improves, can more economic ground undertakes to steel of gold of boracic chemical combination pressure sclerosis is handled. The geometrical appearance of cooling passageway is bestrewed like the network at mould interior, optimized thereby refrigeration and increase heat energy power, shortened treatment is periodic. The mould uses material of nodular cast iron to be made normally, its cost is very low, and facilitate undertake fabricating, but low, wearability needs existence surface strength wait for a problem, be necessary to be in so bear clothe of high load area material of a tall hardness, laser powder v is achievable this operation. The fact proves, laser powder v is a kind of very good method that finishs this kind of craft. Connected company of fast laser system to also have the research of this kind of craft, and development went a metal pulverous and direct deposit equipment (Direct Metal Deposition, DMD) . In this kind of craft, metallic powder is sent into bath of workpiece surface laser with as coaxial as laser light beam direction, and need not undertake warm-up to workpiece. Metallic powder and base material formed the wear-resisting metallurgy mixture of high strenth together. Compare with traditional agglomeration method photograph, laser powder deposit is having incomparable advantage: Hot input amount is small, hardness increases and exterior crackle decreases; Coating interior hardness is finite distributing, coefficient of friction is good; Base material is out of shape very little, leftover stress won't bring about crackle in shape. And laser powder deposit can be used completely at automation production. Three-dimensional Laser Cutting -- another challenge that irreplaceable method cuts a margin is pair of high strenth steel. Three-dimensional laser cut is applied to shape Ban gold cut a margin, be as high as the armor plate of 1500 MPa to intensity especially, because do not have other treatment,the method can be replaced. Below this kind of circumstance, the user was not necessary to have investment to costly punch equipment and clipping equipment. Because be when the data that processes these tall hardness, the die of conventional device or the service life of cutting tool can shorten greatly, and Laser Cutting need not consider these issues, still have setup time weak point, can change neatly the advantage such as product or sample production. Connect TruLaserCell of fast three-dimensional laser product to already applied at masses handkerchief the cut of side wall of Sa spy B, include to cut a margin of course. B side wall shapes by heat of high strenth steel and become, its hardness very tall and should bear very great stress. The B side wall that place of high strenth steel makes increased to be able to bear or endure hit force, enhanced the security of the car. Although the cost of high strenth steel is higher,this also is, can be car manufacturer or the reason that are willing to use. Laser beam welding is received -- the cut that laser of efficiency, flexible, economy can have high strenth steel already, also can use at soldering. Laser beam welding receives efficiency taller, more economy, and solder quality gets very big promotion. But laser solders to ask to precision taller, and the investment cost of laser is relative and character is taller also. With Laser Cutting likeness, one of dominant positions that laser beam welding accepts heat up an input namely the amount is very small. Because to high strenth steel, big case has been measured to fall in hot input, among them the character that certain alloy can lose high strength. Laser beam welding receives the treatment process that also is high quality likewise, only very small heat is out of shape, can make material produces warp scarcely, its precision is unapproachable also. Divide this beyond, laser still can be used solder certain inconceivable component, be like car tailgate and top joint. And, laser solders to be compared with photograph of traditional spot welding, the flange of need is smaller, this reduced automobile body weight and fuel to use up likewise. Want to achieve these advantage, successive welding line is necessary. Scanning solders (Scanner Welding) was offerred taller solder efficiency, bigger flexible and better economy, need to certain part especially a lot of when receiving welding line, be being built shortly is such more. Scanning solders to also be weighed for remote solder (Remote Welding) , the dynamic welder that this is group of lens of a kind of use scanning art. Normally workpiece moves or solder mobile time reduced lens troop. Or two Zhen Jing are laser light beam quickly inside scanning camera lens between welding line switch, what need time to be almost 0. The space between welding line is larger, the welding line amount on workpiece is more, the advantage of this kind of technology is clearer. The welding line that can introduce all sorts of form and do not increase weld time, this makes heat is out of shape reduce further. Use this kind of technology, weld time can be reduced 60% . Accordingly, workstation of group of lens of a scanning can replace a few traditional welder to make a station. Using this kind of scanning to solder after the technology, the structural member of car automobile body can become more agile. The intensity that welding line appearance can nod according to solder asks to use different form. Such, solder the dimension of chimb can be reduced further relative to resistor spot welding. Automobile manufacturing industry because weight of this profit from is lighter, more high strenth component of economy. And, laser scanning solders to need to undertake soldering from workpiece a side only, this can make contact dimension is reduced, reduce automobile body weight but assured automobile body intensity. For example, the TrumaScanL4000 that scanning welder makes a station can use a fast TLF laser or PFO cooperates industrial robot to come true. This kind of workstation also can have three-dimensional treatment to whole automobile body. Laser uses the TruDisk solid of the quality of tall beam of light that tells fast company to cooperate robot system to undertake scanning soldering. The research to structure of prospective automobile body makes clear, scanning solders systematic photograph to resistor spot welding, can reduce the investment cost of 30% , reduce the treatment extent of 50% , shorten the handling time of 60% . Conclusion laser technology handles open of high strenth steel for treatment a new channel, raised economic benefits. Technology of predicting future laser still will design the influence with tremendous generation to the car. CNC Milling