Thin metal is small soldering research
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- source:HOTA CNC Machining
10 (see a picture 2) . Experimental result discusses Nd:Y of pump of ● pulse lampLight beam of laser of AG laser pulse solders craft can undertake controlling through all sorts of parameter, include power of density of power of average peak value, average laser among them, solder speed and pulse duration. This research discusses side overweight these to basically handle parameter to soldering the influence of quality. Thin sheet metal is small solder main advantage of the technology depends on: The heat with extremely low A) inputs: Just offer when need only solder electric energy, can achieve superior control performance. B) cleanness solders: Besides the exterior beautiful besides, solder cleanly to still conduce to simplify disinfection works, facilitate with its his equipment cooperates to use. C) is strong solder: Laser beam welding receives a number little, intensity is high. D) close soldering and sealing receives: Differ with stannic solder or cupreous solder, laser beam welding is received can achieve the sealed performance that be too busy, this is crucial to numerous miniature application. The key of this research depends on making clear weak data board soldering laser parameter, later development gives out to have the result of experimental earning to stainless steel material only. The experimental result of other material, pass email please (Naeemm@gsilumonics.
Com) contact him author. ● stainless steel (seam welding) use beam of light of swash of rectangular arteries and veins to solder, initiative aiguille signal is shown 3 times like the graph, material ply is as follows: Seam welding ply is 0.
5mm-2.
0mm, spot welding ply is 20 M-70 M. 0.
5-2.
0mm ply material solders in what diameter of different solder spot falls speed is shown 4 times like the graph. Pass experimental discovery, width of pulse energy, pulse and peak value power are good to ensuring solder quality has very main effect. The bath quantity of pulse depends on pulse energy. Give data and character, realize certain frit to receive permeate deepness to need to have lowermost pulse energy. The influence solders the other element of function includes focal position, focal length and floating rate. Because the depth of field of long focal distance is better, use so longer focal length lens (160mm and 200mm) solder thicker material (like 1.
5mm and 2mm) when, its speed wants a bit fast at lens of short focal distance (80mm and 120mm) . ● stainless steel (spot welding) thin stainless steel board laser spot welding has the following characteristic: Solder bath small, high temperature and cutty craft time. Solder the temperature of bath is extremely high, often exceed the boiling point of alloy. Heating in the process, as the development of pulse, evaporate rate also rise quickly subsequently. When pulse is stopped, because solder the fast refrigeration of bath, evaporate rate is almost immediateness fall to extremely low cost. Through stainless steel chip spot welding experiment confirms, pulse duration and pulse energy are the influence solders the two big main factors of quality. Experimental result still points out, in spot welding application pulse energy maintains constant circumstance to fall, the change of pulse duration can be mixed to welding line dimension quality produces apparent effect, because the change of density of peak value power is caused,this is. Stainless steel board (20-150 M) spot welding applies extensively at driver of electronic industry hard disk to bend solder domain. Disk drive curves package is chip of 300 series stainless steel component, the kind that takes juncture through spot welding joins different chip together, every equipment includes 4 different package. The most generous package is the installing plate with thick 260 M. Through 40 M of two pairs of spot welding general on installing plate thick bedspring solders on, additional two pairs of spot welding solder through bedspring on 70 M bears the weight of thickly crossbeam. Only a pair of spot welding solder through 40 M bends thickly with bear the weight of crossbeam is linked together. The welding line diameter on exterior top component is 120 M-150 M about, welding line all won't permeate motherboard. Disk drive curves the main demand of spot welding to include: Prevent to solder splatter, solder cannot appear dent, and the diametical size with should be achieved certain solders with ensuring intensity. We studied a series of laser and craft parameter (like pulse energy and width, bundle gas of spot volume, protection and focal position) . Study the result makes clear, we should retain average laser power enough low, realize the high grade spot welding that does not have laminose twist thereby. Spot welding passes technology of laser pulse figuration to finish, but actual in already caused the surface to splatter slightly, this cannot be accepted. We should optimize pulse figuration technology further, so that eliminate,solder splatter problem. Undertake with the pulse figuration technology after optimizing spot welding can achieve better result. About soldering experimental summary we use Nd:Y of pulse of low average powerAG laser undertook soldering to numerous material experiment, studied the performance of laser of 100W Chan Moguang fine. ● considers to discover, change through proper pulse time electric energy (pulse figuration) , can include aluminous, copper, alloy to wait tall a variety of different material that reflex material inside realize high quality to solder. ● combines laser parameter and look of pulse figuration technology, can realize extensive heterogeneous data to solder. Use pulse figuration technology, those who be not all material solder the problem all can be solved, but as pulse laser technology rise ceaselessly, of heterogeneous material solder the technology is sure to progress ceaselessly. ● pulse Nd:YAG laser is tiny solder main competitor of the technology is fiber-optic laser and dish form laser. Of laser of 100W Chan Moguang fine solder simply experimental report goes out: The quality of beam of light of A) fiber-optic laser is higher, can use below pulse and successive wave movement to implement bundle of lesser spot measure in the light of small solder reinforce (34 M) . B) depends on the average power of 100W and small facula, can come true adequately amount to 0.
The stainless steel with 5 thick millimeter board solder. Solder function can be rivalled with titanium alloy photograph. When using CW to run, the area photograph that be heated affects runs to pulse and character summary is a few bigger. The material such as C) aluminium alloy, copper and brass cannot solder. Every square centimeter 8.
The power density of 6 × 10W can't solve the reflection problem of these material. The experimental result of CW and pulse technology is similar. CNC Milling CNC Machining