|
As a new material, high manganese austenitic low-temperature steel has been widely used in the field of low-temperature pressure vessels due to its excellent low-temperature performance and low cost. The content of manganese, chromium, nickel, molybdenum, tungsten and copper is the basic parameter of high manganese austenitic low-temperature steel materials, and that is crucial for product quality control. In view of the fact that the current standards cannot cover the alloy composition range of high manganese austenitic low temperature steel, the analysis method for multi-element of high manganese austenitic low temperature steel was studied based on Inductively coupled plasma atomic emission spectroscopy. Optimize and determine instrument parameters and analytical spectral lines such as RF power, atomization gas flow rate, plasma gas flow rate and observation height. The specific parameters are as follows: RF power: 1.0kW, atomization gas flow rate: 0.7L·min-1, auxiliary gas flow: 1.0L·min-1, plasma gas flow: 12.0L·min-1, observation height.: 7mm, carrier gas: argon, pump speed: 12r·min-1, stability time: 10s, reading time: 6s, lifting delay: 20s, observation mode: radial direction, repetition number: 3 times, analysis spectrum line: Mn260.568nm, Cr206.158nm, Ni231.604nm, Mo202.032nm, Cu327.395nm, W207.912nm, background correction method: fitting. Finally, a method for multi-elements of high manganese austenitic low temperature steel by inductively coupled plasma atomic emission spectrometry was established. The limitation of quantification, precision and accuracy can meet the actual inspection requirements.
|
