laser sword shell processing

Wide Application Of Laser Sword Shell Processing

Laser processing includes high-power cutting and welding; The main uses of various laser processing methods for drilling, scribing, cutting, texturing, stripping, isolation, etc. of micro machining include:

Drill Hole

In circuit board design, people began to use ceramic substrate instead of conventional plastic substrate to achieve better thermal conductivity. In order to connect electronic components, it is generally necessary to drill hundreds of thousands of holes on the board μ Small holes of class M. Therefore, it is very important to ensure that the stability of the substrate will not be affected by the heat input during the drilling process. Picosecond laser is an ideal tool for this application.

Picosecond laser can complete the hole processing by impact drilling and ensure the uniformity of the hole. In addition to circuit boards, picosecond lasers can also drill high-quality holes in materials such as plastic films, semiconductors, metal films and sapphires.

Scribing And Cutting

Laser pulses can be superimposed by scanning to form lines. Usually through a large number of scans, you can go deep into the interior of the ceramic until the depth of the line reaches 1 / 6 of the material thickness. The individual modules are then separated from the ceramic substrate along these scribed lines. This separation method is called scribing.

Another separation method is to use ultrashort pulse laser ablation cutting, also known as ablation cutting. The laser ablates the material and removes the material until it is cut through. The advantage of this technology is that the shape and size of the processed hole have greater flexibility. All process steps can be completed by a picosecond laser.

Different effects of picosecond laser and nanosecond laser on polycarbonate materials.

Wire Ablation (removal of coating)

Another application often seen as micromachining is the precise removal of coatings without or slight damage to the base material. Ablation can be either a line several microns wide or a large area of several square centimeters.

Since the thickness of the coating is usually much less than the width of the ablation, heat cannot be conducted on the side. Therefore, nanosecond pulse width laser can be used.

The combination of high average power laser, square or rectangular conducting fiber and flat top light intensity distribution makes laser surface ablation be applied in industrial field. For example, the trumicro 7060 laser of tongkuai company is used to remove the coating on the glass of thin-film solar cell. The same laser can also be used in the automotive industry to remove the anti-corrosion coating and prepare for subsequent welding.

Surface Structure

Structure can change the physical properties of the material surface. According to the lotus effect, the hydrophobic surface structure allows water to flow away from the surface. This characteristic can be realized by creating submicron structure on the surface with ultrashort pulse laser, and the structure to be created can be accurately controlled by changing laser parameters.

Opposite effects, such as hydrophilic surfaces, can also be achieved, and micromachining can also create larger structures. These processes can be used in the fuel tank of the engine to manufacture some wear reducing microstructures, or structurally realize the welding with plastics on the metal surface.

Carving Molding

Engraving is to create three-dimensional shapes by ablating materials. Although the size of ablation may exceed the scope of micromachining in the traditional sense, its required accuracy still makes it divided into this kind of laser application field. Picosecond laser can be used to process the edge of polycrystalline diamond cutter of milling machine.

Laser is an ideal tool for machining polycrystalline diamond. Polycrystalline diamond is an extremely hard material that can make the edge of milling cutter. The advantage of using the laser cutting tool to process the cutting groove is high precision.

Micromachining has a very broad application prospect. More and more daily necessities are entering our vision through laser micromachining.

Laser processing belongs to non-contact processing, which has the significant advantages of less follow-up processes, good controllability, easy integration, high processing efficiency, low material loss and low environmental pollution. It has been widely used in automobile, electronics, electrical appliances, aviation, metallurgy, machinery manufacturing and other industries, and plays an increasingly important role in improving product quality, labor productivity, automation and reducing material consumption.