Stainless steel precision foundry teaches you how to determine the manganese content in precision castings

There has never been a unified standard for the determination of manganese content in precision castings, and various methods are different. In order to better assist the promulgation of industry standards, here is a summary and storage, so as to be prepared.

To measure in precision castingsMn, According to relevant standards, such as: determination of manganese contentGB/T5121.14-2008, Can find the detailed answer you need, and there is a very detailed process.

Regarding which brand721The measurement specification is accurate. You should refer to which standard first and see at which wavelength the specific measurement is measured. If it is360-1000Within, select721Can solve the difficulty, otherwise the ultraviolet visible spectrophotometer is needed. If the budget is relatively sufficient, one can choose from Japan; if the budget is relatively small, one can choose from a domestic one.

Simply put, the precision castings won the bid for steelMnThe content is given and known. After disposing of the standard steel, you will assign a series of concentration valuescDifferent aqueous solutions, then measure the absorbance valueA, Make a standard curve; then measure the absorbance value with the aqueous solution of the sample you configured, and get it according to the curve diagramMnThe concentration value of the test product can be calculatedMncontent. The formula calculation is actuallyA=εbc,AIt is measured by you with a spectrophotometer, the standard steelcIs known and can be madeAcGraph.b-Liquid layer thickness, ε-Molar absorptivity.