With the development of science and technology, electronic, electrical, digital products are becoming increasingly mature and popular around the world, the products covered by this field contains any components may be involved in the soldering process, from the PCB board main parts, small camera modules in the VCM components, the vast majority of the need to use laser soldering equipment for welding operations.
Laser Soldering Machine
Laser soldering is a brazing method that uses a laser as a heat source to melt tin so that the soldered parts can achieve a close fit. According to the state of tin material can be divided into three main forms: tin wire filling, tin paste filling, tin ball filling. Shenzhen Zichen laser was founded in 2014, focusing on laser micro-precision processing technology development and research in the field, years of experience in the industry, has now included the above three tin material state of the automated laser soldering equipment, and the introduction of unique laser welding application solutions, in the market have been widely praised.
PCB board soldering of the main components
Now the electronics industry chip-level packaging (IC packaging) and board card level assembly are a large number of tin-based alloy filler metal for welding, to complete the device packaging and card assembly. For example, the PCB board in the flip chip process, brazing directly to the chip connected to the substrate; in the electronic assembly manufacturing, the use of brazing the device welded to the circuit substrate.
PCB board traditional soldering process including wave soldering and reflow soldering, etc., wave soldering is the use of molten brazing material circulating flow of the wave surface, and inserted with the components of the PCB soldering surface contact to complete the soldering process; reflow soldering is the brazing paste or pads placed between the PCB pads beforehand, and then heated through the brazing paste or pads of the melting of the components connected to the PCB. For laser soldering, selective wave soldering, reflow soldering can do laser soldering can also do, but selective wave soldering, reflow soldering will produce pollution, laser soldering will not. But reflow soldering to do large quantities of plane is relatively easy, laser soldering is a selection of welding, small, thin, light, vertical welding is very good, is not a substitute for reflow soldering; most of the precision digital electronics industry, such as: headphones, semiconductors, communications, automotive, fuse, wire class electronic devices, CCM modules, FPC/PCB/FCP boards, etc. to use the laser soldering machine is more advantageous.
Laser soldering of camera modules and VCM components
Camera modules in the VCM components of the small size of the solder joints, the naked eye is difficult to observe, in order to realize the VCM components of automated soldering, the traditional soldering method has been unable to help. The minimum spot size of laser soldering can be 50 microns or even lower, and the spot shape can be designed as round, square and other shapes. The rapid development of modern laser optics provides an advanced soldering method for precision parts similar to VCM components.
Solder paste laser welding is generally used in spare parts reinforcement or pre-tinning, such as shield corners through the solder paste at high temperature melt reinforcement, the magnetic head contacts on the tin melt; also applies to the circuit conduction welding, for the camera module and the VCM voice coil motor welding effect is very good, such as the camera module, because of its non-existence of complex circuits, through the solder paste soldering tends to achieve good results. For precision micro-small workpieces, solder paste filler soldering can fully realize its advantages.
With the rise of labor costs in the Chinese market and the scarcity of skilled personnel, the traditional soldering field of artificial demand is slowly transformed into the demand for mechanized operations, and laser soldering technology has the advantages of a high degree of automation, will break through the digital electronics industry's traditional manual processing mode of operation, to help enterprises to the development of intelligent manufacturing. From the current situation of customer soldering samples, the popularization of laser soldering is also a general trend.
