In Mar, HOTSALES, AUE customer order 500pcs zinc plates

In March, HOTSALES, 500pcs zinc plates are packed for delivering to our customer in AUE.High quality zinc plates with good packing.

What is Metal Etching Process

Etching is a technique that uses chemical strong acid etching, mechanical polishing or electrochemical electrolysis to treat the surface of objects. In addition to enhancing the beauty, it also increases the added value of the object. From traditional metal processing to high-tech semiconductor manufacturing, etching technology is within the scope of application.

What is metal etching?

Metal etching is a technique for removing metallic materials through chemical reaction or physical shock. Metal etching techniques can be divided into wet etching and dry etching. Metal etching consists of a series of chemical processes. Different etchants have different corrosion properties and strengths on different metal materials.

Metal etching, also known as photochemical etching, refers to the removal of the protective film in the metal etching area after exposure, plate making, development, and contact with chemical solutions during the metal etching process to achieve dissolution corrosion, formation of bumps or hollowing out. It has been used in the manufacture of printed embossed plates such as copper plates and zinc plates, and is widely used to reduce the weight of instrument panels, or to process thin workpieces such as nameplates.

Etching process

Depending on the type of metal, the etching process will be different, but the general etching process is as follows: metal etching plate - → cleaning and degreasing - > water washing

->drying-→lamination or screen printing ink->drying-→exposure drawing->developing->water washing and drying-→etching-→release film-→drying->inspection-→forming

product packaging.

1. Cleaning process before metal etching:

The process before the etching of stainless steel or other metals is cleaning, the main function is to remove dirt, dust, oil stains, etc. on the surface of the material. The cleaning process is the key to ensure that the subsequent film or screen printing ink has good adhesion to the metal surface. Therefore, the oil stains and oxide film on the metal etching surface must be completely removed. Degreasing should be determined according to the oil contamination of the workpiece. It is best to conduct electricity before screen printing ink

Degreasing to ensure degreasing effect. In addition to the oxide film, the best etching solution should also be selected according to the metal type and film thickness to ensure that the surface is clean. Must be dry before screen printing. If there is moisture,

2. Paste dry film or silk-screen photosensitive adhesive layer:

Determine the use of dry film or wet film screen printing according to the exact width of the actual product material and thickness graphics. For products with different thicknesses, factors such as the etching processing time required for the product pattern should be considered when applying the photosensitive layer. Thicker or thinner photoresist layers can be made, with good coverage and high definition of patterns produced by metal etching.

3. Drying:

After the film or roll screen printing ink is completed, the photoresist layer needs to be thoroughly dried in preparation for the exposure process. At the same time, it is necessary to ensure that the surface is clean and free from sticking and impurities.

4. Exposure:

This rainbow is an important sequence of metal etching, and the exposure energy will be considered according to the thickness and precision of the product material. This is also the embodiment of the technical capabilities of etching processing enterprises. The exposure process determines whether etching can ensure better dimensional control accuracy and other requirements.

5. Development:

After exposing the photosensitive adhesive layer on the surface of the metal etching plate, the patterned adhesive layer is cured after exposure. After that, the unwanted part of the pattern, that is, the part that needs to be etched, is exposed. The development process also determines whether the final size of the product E can meet the requirements. This process will completely remove the unwanted photoresist layer on the product.

6. Etching or etching process:

After the product prefabrication process is completed, the chemical solution will be etched. This process determines whether the final product is qualified or not. This process involves parameters such as the concentration, temperature, pressure excitation, and speed of the etching solution. The quality of the product needs to be determined by these parameters together.

7. Removal:

The surface of the etched product is still covered with a layer of photosensitive adhesive, and the photosensitive adhesive layer on the surface of the etched product should be removed. Since the photosensitive adhesive layer is an acidic substance, acid-base neutralization method is mostly used for puffing. After overflow cleaning and ultrasonic cleaning, remove the photosensitive adhesive layer on the surface to prevent the photosensitive adhesive from remaining.

8. Detection:

After the film is taken, the follow-up is testing, packaging, and the final product confirms whether it meets its specifications.