High Precision Metal Etching

Metal etching can meet the requirements of many precision graphic designs.

In the elevator wall board or building building materials veneer often can be seen with a grain of metal, is made of stainless steel plate etching. In the general consumer products, it is more easy to see the application of aluminum etching, aluminum plate on the pattern or text logo is often produced by metal etching. In addition, etching is often used to make various kinds of metal mesh, such as: The metal filter in the fruit and vegetable machine, the loudspeaker of the electronic product, or the modified etching film used by the model player to make the aircraft ship model.

In general, the minimum diameter of the etching process is about 0.01-0.03mm, Metal Etching the minimum aperture diameter is about 0.01-0.03mm, the process tolerance is up to ±0.01mm.

General precision electronic Parts often choose metal etching, metal etching what benefits?

1, the metal parts to be processed complex shape, such as a very thin stainless steel mesh is a very typical example. Through the use of etching technology can reduce the molding difficulty and processing costs.

2, if the product is very thin (thickness between 0.03mm--1mm), using other processes, Metal Etching may lead to product deformation. Metal Etching But etching can ensure that the product is not deformed. Usually, the thinner the product, the higher the precision.

3, the metal etching process will not change the hardness, strength, formability and other physical properties of metal.

4, some metal materials in the stamping process easy to break, Metal Etching and easy to produce the hair edge of the coil, affecting the assembly of products, and etching to ensure that these materials intact.

5, magnetic soft materials in the metal etching can maintain their original physical properties.

6, metal etching products without burr.

The metal etching process of metal in etching solution, first of all, is the dissolution of grains on the surface of metal parts, secondly, the dissolution of grain boundary also occurs, generally speaking, the grain boundary is dissolved by different dissolution rate. Metal Etching In most polycrystalline structures of metals and alloys, each crystal can take almost any orientation of the atomic lattice. The different orientations of grains, the size of grain density and impurities will form microscopic or ultra microscopic cells with the surrounding parent metal. Therefore, for metal in the metal etching liquid, one side and the existence of these original batteries, the metal surface has a potential difference, the potential of the place is temporarily protected, the potential negative place by the excellent metal etching. On the other hand, there is a variation of the atomic spacing on the surface of the part, Metal Etching and where the atoms are wider, the dissolution rate is rapid, until the uneven surface is displayed. Then, the dissolution will be at almost constant speed cutting tightly stacked atomic layer, the surface of the geometric shape also as the grain dissolved and continue to change. Metal etching on the grain boundary will further affect the surface of the part. The distortion of crystal lattice and enrichment of impurities in the grain boundaries often leads to faster metal etching, which may cause the entire grain to be etched into a concave-shaped metal. Metal Etching The smaller the grain size, the lower the surface roughness after etching, which can also be proved from actual production. In production is often the material more evenly dense its surface smoother.