Laser cutting of aluminum substrate

• aluminum substrate is a kind of metal base copper clad plate with good heat dissipation function. Generally, a single panel is composed of three layers: circuit layer (copper foil), insulation layer and metal base layer. For high-end use, there are also double panels designed for circuit layer, insulation layer, aluminum base layer, insulation layer and circuit layer.Very few applications for the multilayer board, can be made of ordinary multilayer board and insulation layer, aluminum base bonding.

, LED aluminum plate is PCB, is also the meaning of printed circuit board, just PCB material is aluminium alloy, we used the general circuit board material is glass fiber, but because the LED heat is larger, so the LED lamps and lanterns with the circuit board is commonly aluminum plate, can fast heat conduction, other equipment or electrical circuit board or glass fiber board than with traditional FR - 4, aluminum plate can minimizes thermal resistance, make the aluminum plate has excellent heat transfer performance;Compared with the thick film ceramic circuit, its mechanical properties are very good.Aluminum substrate has the following unique advantages: meet the requirements of RoHs;More suitable for SMT process;In the circuit design scheme, the heat diffusion is treated very effectively, so as to reduce the operating temperature of the module, prolong the service life and improve the power reliability.Reduce the assembly of radiators and other hardware (including thermal interface materials), reduce the volume of products, and reduce the cost of hardware and assembly;Optimize the combination of power circuit and control circuit;Replace fragile ceramic substrates for better mechanical endurance.

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Aluminum substrate applications

Aluminum plate by its excellent heat dissipation performance and machining performance, electromagnetic shielding performance, dimension stability, in the hybrid integrated circuit, automobiles, motorcycles, office automation, high-power electrical equipment, power equipment, LED lighting and other fields, has been more and more widely used, demand increases every year, its development prospects are very broad.

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Traditional cutting of aluminum substrate is introduced

• there are three types of traditional aluminum substrates:

1. CNC drilling machine/gong machine is usually used for processing, which requires drilling nozzle, gong knife, backing plate, alcohol and other consumables;High cutting cost, low precision of sheet forming, large gap of gong slot processing (conventional 1.6mm;2.MM gong knife groove width), and easy to cause deformation of the substrate;

2. Traditional methods such as die stamping and forming are adopted;

3. The nc V - CUT CUT way, under the condition of guarantee the precision of cutting, also requires processing after the trough line smooth and no burr, asked for a break down of the finished products no edge, board face cannot have scratches, should not only meet the deformation of plate cutting processing, and to avoid the occurrence of secondary deformation, various process leading to low machining efficiency, the yield is low.At present, most of the circuit board companies cut aluminum substrates generally through the gong machine for processing a whole aluminum substrates, aluminum substrates on the back of the finished edge still have a little burr, we must manually to the finished edge of the burr for scraping, greatly increase the workload;The surface of the increase in scratch defective products, and the loss of the tool is also large, the efficiency of processing is still relatively low.