Macro etch test is a technique used to test a weld by revealing the structure of the base material and weld. It’s a destructive testing method that is used to evaluate the characteristics of the weld.

What is chemical etching used for?

What is the chemical etching process? The chemical etching process is a sheet metal machining process that is used to manufacture complex components with high levels of accuracy. Comprising nine steps, it works by printing the component design onto a photoresist mask which is laminated onto the metal.

What is etching and its types?

Etching is the process of material being removed from a material’s surface. The two major types of etching are wet etching and dry etching (e.g., plasma etching). The etching process that involves using liquid chemicals or etchants to take off the substrate material is called wet etching.