Laser spells solder -- lead prospective automobile body to solder technology

6mm. Neodymium: Laser of yttric aluminous garnet is solid laser, laser is radiative agency is neodymium atom the lattice in alumina. Because laser is radiative atomic density is higher, accordingly the size of solid laser wants than aeriform laser small, neodymium: The wavelengh of laser of yttric aluminous garnet is 1064nm, be carbon dioxide laser very one of. Carbon dioxide laser is stronger now laser, but neodymium: The drill of laser of yttric aluminous garnet accuses a system to have an advantage extremely. It is as a result of the wavelengh of carbon dioxide laser 10.

6mm, must want to install so " brow " device, this restricted possible athletic way. And neodymium: The radiate of laser of yttric aluminous garnet can use agile fiber to pledge optical wave guide undertakes introductory, because this can allow laser emissive head,have free shift. 2, advantage and the advantage with ask laser beam welding is received the most significant depend on can very will tall energy focusing at a bit, stimulate beam of light to be hit in two to want to solder partial brim, input energy heats the metal and melt its. After stimulating beam of light to make in order to, dissolved material will cool quickly. In this process, in the amount of one fraction will enter the spare parts that is soldered. Soldering reduce hot metabolic at the same time, also reduced the hot energy of the input. Reduce what affect because of quantity of heat to be out of shape, increase pair of accuracy correct, can save a large number of money and time. However, how to rise solder speed and reducing feebleminded quantity to input is the challenge that faces at present. Be being reduced by the area of heat addition although feebleminded quantity input has its profit: The complex steel of pearlite, martensite and austenite juncture structure won't big range changes a structure, this one characteristic applies to other steel likewise, be like the IF steel that good by demarcate carbon precipitates; But also put in a few inadequacy on the other hand, a few energy can bring about fast refrigeration, heat energy will be guided cooling place. To reduce the sclerosis of juncture, adjusting power of soldering speed parameter, laser, cooling rate and focal position carefully is very important. And to prevent a metal farther sclerosis, still need to use protective gas to try to protect, if argon is enraged,wait for the gas that won't produce any hot reaction in material with helium gas. Another problem that the small spot dimension of laser light beam poses is the quality that cut a margin, if be among two spare partses,have the juncture that should undertake soldering, stimulate beam of light to want to assure when to passing data, won't connect to touch and melt its with its. Want to avoid this a little bit, very tall to the requirement of spare parts accuracy. Current, use domain is more general is to join the length of two spare partses is seamed, this can be in discovery in more and more automobile body blank. Laser spells solder board 1.

Captive uncle laser spells the Sen Ke of advantage Germany the base of a fruit that laser spells solder board solder board limited company begins production to spell solder board from 1985, the occurrence that laser spells solder technology makes car production is made from truckload manufacturer is transferred to data vendor. Current, laser spells solder board to basically apply at automobile manufacturing industry. Solder in laser in, material is right receive and not be to build receive, this will bring following welding line character: (1) the volume that reduces welding line extent, for example, welding line width does not exceed 0.

5 ～ 1mm; (2) do not raise welding line height; (3) lesser to influence of function of strike out form; (4) after add on welding line galvanization, can maintain its cathode to protect a function; (5) solder in the process, hot influence area is small. Finish after soldering, the static state of welding line area, dynamic intensity is very main index, accordingly, still need to sample to welding line area, undertake ruinous tensile strength checks (cupping checks) , in order to examine the drawing figuration function of welding line area. Generally speaking, the tensile strength of welding line wants than the intensity of mother capable person tall. Laser spells solder board craft and traditional spot welding to take the product look that receives technology more a lot of than having advantage: Reduced truckload production cost, content to flow not only cost, truckload weight, tolerance buildup, oily bad news and percent defective, and reduced periphery reinforcement amount, simplified to assemble measure and craft, make the collision ability of car increases at the same time, strike out rate reachs the ability that fight corrupt to rise. In addition, because avoid to use fluid sealant, also bring a profit for environmental protection. 2.

The application that laser spells solder board spells solder board already by wide application at automobile body place, ULSAB (the world pledges gently association of steeliness automobile body) newest research makes clear as a result: In structure of newest steeliness automobile body, 50 ％ were used spell solder board to make. Nextpage pursues the linear laser that dark of 2 the base of a fruit overcome company of captive Bai Nuobang to produce spells solder implement spell what solder technology applies at automobile body side wall to make when laser, need any strengthening no longer lever, reinforcement and accessary manufacturing technology, criterion weight and component amount can get decreasing, and the application that delays malleability material high also can make fight bump ability to get improvement. In the meantime, also need to strengthen no longer board, on B column, the application that spells solder board can be reduced greatly accumulate tolerancepublic errand. Laser spells the adoption of solder board, increased the stability of quality of door part finished products not only, make the air officer of door part is a difficult problem no longer, can reduce the weight of the component at the same time, and original juncture is in sealed measure elliptically, also make its have environmental protection sex more. In addition, spell solder board to still make in the application on door the tigidity of area of join with a hinge gets whole is strengthened, the fits tolerance of door gets be amelioratived considerably. Weight is reduced, manufacturing technology gets optimizing, make cost drops necessarily. Intensity and steel spend the automobile body of Ao Di A6 to get a praise fully all the time, homebred and brand-new Ao Di A6L undertook improvement again on original basis: The automobile body that used laser to spell solder technology is designed (if pursue 3) . A6L of new Ao Di passes the automobile body of aggrandizement, its are fought turned round intensity to rise 34% . Cooperate brand-new automobile body, batholith to design together with to use advanced laser beam welding to accept structure of solid automobile body, make homebred and brand-new Ao Di A6L is when experience collision, the automobile body that forecast is out of shape area, flank is prevented bump into structure of the space inside protective bridge and reasonable car to wait can provide effective protection for the passenger. The design that these seeing less than feeling that do not wear and select material not only the production cost that can reduce car and weight, the life that still can protect a passenger in ground of utmost of the moment of truth is safe. 3.

Quality management (1) solder detect quality detects and ensure a system to be those who produce high quality to spell solder board to offer assure, the manufacturing process that spells solder board introduces automation product line, bring the production of complete, economy in order to ensure, this needs modern testing instrument. Be in early 1985, captive uncle laser spells Sen Ke of German the base of a fruit limited company begins solder board when production spells solder board, had used the system that monitor, now, this covers a system already more perfect. Soldering a welding line is installed to monitor a system at the back of laser head, use the quality of the welding line that monitor, in order to make sure welding line accords with quality requirement. The plasma system that monitor is used to monitor solder the stability of the process, computer support system is soldering the signal that sensor of the processing in the process provides. Laser spells solder board to need full automatic or semi-automatic economy product line, should use modern technology to monitor at the same time solder process and product quality. To satisfy these new full automatic production is aleatoric the produces a course demand of joining together board, dark of the base of a fruit solders dark of the research department of limited company of captive uncle iron and steel, the base of a fruit overcomes technical limited company, Disenke limited company of technology of captive uncle laser and limited company of Sen Nuobang of the base of a fruit are leading period level offerred welding line quality and, and the first laser that begins the first management laser to spell solder board factory to produce spells solder board to use Yuaodi on the motherboard of 100. In recent years, this technology got further progress in different level and be improved, it can be controlled not only solder process itself, and the newest generation technology that can have a system to develop with this basis will evaluate welding line. Its monitor a system to be able to solder in high speed not only the blemish that appearance of welding line geometry monitors to go up in the process, and still can detect dinky hole. (2) evaluate a system laser of LAM (of dark of the base of a fruit uses government) with welding line inspection system photograph is united in wedlock, not only can flaw of fish incline to, the geometrical aperture with irregular for example (aperture is incident, brim displacement, ) of root cave in, and still can the flaw of fish small degree, for example stoma and hole. The union of smooth stripe and plasma sensor system has served as complement with groove, because this is tall,measure rate can assure be in tall solder below rate case, surely the imperfect possibility with slight fish. A computer is additional evaluate a system to be able to evaluate sensor signal automatically, include to soldering during the process. The condition that defines whether relevant measurement point thereby accords with designation requirement, the error that whether perhaps causes juncture quality whereabouts has happened. Soldering during the process, the temperature of welding line by infra-red measure register. Each are aleatoric the sensor data logging that joining together board is evaluated is deposited to be in a short agreement, this means the quality that allows this product to prove with the file. Graph 3 homebred one steam - the masses is brand-new a whole wrong investigation system can warn Ao Di A6L operator is in full automatic solder all mechanical defect that happen in establishment, this quality management and supervisory system are aimed at by expand into nonlinear the new facility idea that deliver a child of laser beam welding produces. Sensor finds a place for before solder connect can fish will be soldered the join brim of board makings, allow to find out the exact position of join brim not only, and allow to measure the jackknife between board makings. When the jackknife that find out measures the limiting value that exceeds to be booked, will warn operator, and trim a gap automatically. Additional, use this kind of device, the investigation signal of join brim also is used at discerning accurately to stimulate beam of light with what adjust join brim. 4.

Does laser beam welding of technical trend future receive a technology which kinds of means will use? The answer has two: One kind is to evolve, improve existing technology. This is meant in the light of development laser solders will have a kind of new laser source -- fiber laser, this is a kind of laser that sets agile fiber resonator, far outclass of input energy rate outputs energy, whole equipment will be more compact. Another advantage of high-power fiber laser depends on module building, a lot of power are the fiber resonator of 300 ～ 500W about, if produce technical flaw, change an appropriate module is very easy. Below this kind of circumstance, the time that works as a result of laser is longer, because this also does not need,deploy a well-trained technician. Another kind is to be in a few solder with resistor snail column the laser beam welding of the area introduction that give priority to receives kind -- " alternant dragon door solders " , when weld time exceeds the working hours of 50% , laser beam welding receives unit more economic. Using a field, applying resistor snail column to solder now, the method that solves this problem is the laser that a kind of regulation has two to solder to be configured alternately. Configure when when soldering to moving, head of processing of another configuration place solders downward the position is mobile, in laser will turn to another to solder after this configuration, this technology already overcame captive uncle to introduce by dark of the base of a fruit. However, also will appear in the light of car manufacturer besides completely new-style making the world solders the domain produces revolutionary change solder technology, if chafe,solder. Its advantage is to need to be able to solder only the low energy with two essential parts is inputted can, and form of hot quantitative change is inferior. Because temperature is very low, accordingly, welding line won't be harder than material. But the place that also has inadequacy: High strenth pressure and rapid rotation requirement must want to secure metallic spare parts well. Current, only a few companies use this technology to solder aluminous. But no matter from which for angle, laser spells solder technology will be prospective automobile body solders development direction of the technology! CNC Milling