Chemical Machining Process (CHM)
In this article, we will learn about Chemical Machining Process, Working Principle, Application & Disadvantage. This Chemical Machining process also has the name chemical milling. This removes the metal from the rarity. First, you need to thoroughly clean the material. Then some kind of preventive coating should be done where machining is not required. This is the name masking.
Working Principle Of Chemical Machining Process
It is used as a masking sheet of vinyl plastic and rubber materials. This sheet should be used for template coating on the object. After doing this masking the material should be placed in a rare chemical. Depending on the chemical material.
Caustic soda is used for aluminum products and nitric acid is used for magnesium and zinc. Depending on the vigor and heat content of this rare chemical, the amount of metal will be reduced. Chemical conversion into metal metallic salt leaves the work material.
Rare sizes range from 0.02mm to 0.04mm per minute. After the appropriate amount of rare material is removed, the material is removed and put in deoxidizing solution. Thus the surface becomes black when the chemical is removed. Rinse with water afterward.
Applications
- Used for machining curved and irregular surfaces.
- Once the object is made to the desired image, you can remove the material.
- No need for more efficient operations.
- Low cost of machining and tools.
- There are no bolts from the metal.
- Tolerance is available as needed.
Disadvantages
- The masking technique can be expensive in some conditions.
- It is a very slow process.
- The gas produced during the chemical conversion must be properly discharged.
- You cannot remove too much metal.
Post a Comment