Today, for the steel industry in particular as well as metallurgical and other non-ferrous metals, using spectrophotometers to manage and monitor the chemical composition of metallic materials and alloys is a indispensable in production stages.
Spark marks on sample surface after analysis in Shimadzu PDA-7000
By using the spectrophotometers to determine the chemical composition of alloys, thereby identifying materials such as carbon steel, stainless steel, low alloy steel, cast iron, etc.
There are many factors that affect the determination of the chemical composition of materials such as the metallurgical process, the operation of the analyzer user, etc. The preparation of the surface of the sample is also an important factor in determining the optimum result when applied to the analyzer on the spectrophotometer.
Requirements for sample preparation:
For different materials, sample preparation is a bit different:
The following is an illustration of the process of preparing a sample of common materials:
Diagram of preparation of analytical samples for some common materials