Application of Chemical Etching Machine Process

The application of chemical etching machine technology in ancient times was accidental. One day, people accidentally spilled acid on metal and found that the acid could corrode and bite off the spilled area, creating a three-dimensional feeling between the bitten and non bitten areas. Then people carefully record this situation. Subsequently, strong acid type non-polar acids, which are corrosion-resistant substances, were discovered. After continuous experimentation and improvement, they were gradually applied to practical life, bringing great convenience to people's lives.

Around the 15th century, people mainly applied etching machine technology to the processing of armor, and the craftsmen who made armor attached some corrosion-resistant materials to the surface of the workpiece. It can be used for both marking and anti-corrosion purposes. It is also possible that the rust spots formed by the damage of these protective layers played a marking role, inspiring people to gradually improve and master the etching machine technology. At the beginning, it was difficult to carve patterns on armor, helmets, weapons, and other armor by hand. People had to seek a quick and convenient way to process them. Through continuous experiments, they discovered that acid can corrode metals and materials that can resist acid and corrosion. Eventually, chemical corrosion technology began to be used in the production of armor patterns.

The earliest written record of using etching machine technology on metals appeared in a 15th century British manuscript, which described an etching machine technology solution made of salt, activated carbon, and vinegar, and a coating composed of flaxseed oil as a protective layer. When processing, the anti etching machine technology material is first coated with a protective zone pattern according to the finished workpiece style, and the metal in the exposed area is corroded and bitten off by the acid. In the future, advanced paraffin and natural resin will be used as protective layers. When using this method, it is necessary to first coat the entire material with paraffin, and then scrape off the paraffin on the areas that need to be etched. This is the origin of step chemical corrosion or external corrosion processing.

The possibility of using a liquid to eliminate one or more metal materials first depends on the effectiveness of the compound, that is, the corrosiveness of the compound. Only when the corrosiveness of this compound is strong enough can it be used as a chemical raw material for etching machine technology. It can also be seen from this that the significant development of chemical corrosion is a direct result of the development of chemical etching machine technology solutions. In addition, the discovery and development of anti-corrosion materials play a decisive role, as they control the targeted localized corrosion on the same metal in order to truly produce and process the products we need. Therefore, protective materials are quite important. Since the emergence of corrosion processing technology, protective technology and corrosion process methods have always been the key to ensuring the quality of pipe fittings during processing..

In ancient times, technicians engaged in corrosion processing did not have as many methods as we do today to transfer graphics and text to the metal surface that needs to be corroded. The earliest method may have been to use some paraffin, rosin, asphalt, etc., or natural organic materials such as beeswax and tung oil. According to records, in the 16th century, craftsmen specializing in corrosion processing had to patiently spend weeks or even months crushing these materials in a certain proportion, then blending them with liquid asphalt or tung oil, or directly heating and melting them to make protective coatings. Then carefully apply the protective coating to the entire surface of the parts that need to be corroded with a brush, and after drying or cooling and hardening; Then use a hard object such as a needle or scraper to create the pattern on the protective layer, followed by corrosion processing using the original method. We can imagine how they built a barrier around the corroded area using natural room temperature solid resins such as paraffin, and then slowly added acid solution to the area that needs to be corroded. We can estimate the various difficulties that these craftsmen specializing in corrosion will encounter, such as insufficient adhesion of the anti-corrosion layer. Before reaching the required corrosion depth, the anti-corrosion layer may completely or partially fall off, requiring manual polishing to remove all corrosion burn marks; The anti-corrosion wall built with natural resins such as paraffin cannot effectively prevent the overflow of acid, which can corrode the outer edges or other parts of the parts. These parts are already processed before corrosion and have expensive value, thus bearing great risks. With the development of other auxiliary technologies and organic materials, non-metallic materials can be used to make large containers, and at the same time, the comprehensive protection of other parts of the parts using anti-corrosion coatings has gradually been mastered. At this time, the parts can be directly immersed.