Photo etching process is an ideal production process for the formulation of precision sheet components. The chemical formula is obtained using a light-resistant template to remove more than specific areas. The photo etching process begins with the production of a photographic tool. There are many ways to create image creation tools. The most common method is to create a correct and accurate imaging tool using a laser image painter to selectively detect a photographic film in accordance with computerized design data.
The next step is to select and prepare metal for the photo etching process. The ease of drilling depends largely on chemical composition because drilling is a controlled chemical reaction. Before coating with photoresists, electrolytic plates are electrically cleaned to remove all dirt, rust, grease, and oils. This treatment ensures that adhesion is good for image resistance. Clean the surface quickly and reliably with alkaline electricity.
The coated metal substrate covered with the artistic image is exposed under the source of ultraviolet radiation. The exposure time depends on the thickness of the metal. During development, resistance to negative images that are not exposed to the action will be eliminated, and resistance to exposed images on the lower layer will continue to form a protective layer of the drill.
This photo-etching process is usually compared to metal extrusion because both methods can be used to produce precision metal parts. Photochemistry is more economical in the production of complex parts. Precise metal extrusion is characterized by low unit production costs, but with very high tool costs, especially for complex parts.
photo etching machines also take up less time in production. Normally, it takes two or three days to produce samples. In contrast, the use of an average metal punch takes only a few weeks. If any design change is required, the imaging tool can be easily modified at low cost in the short term using photochemical machines. Metal stamping also requires more abrasive treatments to eliminate sleeve and finishing elements.
In addition, metal stamping cannot handle pre-hardened sheet metal. On the other hand, the production of photochemical machines can process sheets of any hardness. photo etching does not affect the physical and chemical properties of sheets. This is useful when working on the production of magnetic materials. Metal stamping greatly reduces magnetic permeability and also creates stresses that require costly and time-consuming composting to restore permeability.
Chemical etching also reduces the production time of components. On average, the rotation time of two or three days is only needed to produce the number of samples. Compared to metal stamping, it takes about two weeks to complete the tools. Due to the fast transition time with photoChemical etching, if any design changes are required, the imaging tool can be easily modified at a low cost in a short period of time.
There are some complex and sensitive metal parts that can only be produced by optical chemical drilling. Although the technique first appeared during World War II, it was modified and updated over the years to serve a variety of applications in various industries. Many modern technologies that change your life will not be possible without a rapidly changing production process. These numerous advantages of photo etching benefit from industries such as consumer electronics, medical implantation, aeronautical engineering, etc.