GB/T 5687.13-2021Ferrochromium—Determination of chromium, silicon, manganese, titanium, vanadium, iron contents—Wavelength dispersive X-ray fluorescence spectrometry (fused cast bead method) (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.

This document is part 13 of GB/T 5687.GB/T 5687 has released the following parts.

---Determination of ferrochromium, silicon-chromium alloy and chromium-nitride-iron silicon content perchloric acid dehydration gravimetric method;

---Determination of nitrogen content of ferrochromium nitride and high-nitrogen chromium iron, distillation-neutralization titration method;

---Determination of chromium, iron and manganese content by flame atomic absorption spectrometry;

---Determination of chromium iron titanium content Diantipyrine methane spectrophotometric method;

---Determination of chromium iron phosphorus, aluminum, titanium, copper, manganese, calcium content inductively coupled plasma atomic emission spectrometry;

---Determination of chromium, iron, chromium, silicon, manganese, titanium, vanadium and iron content by wavelength dispersive X-ray fluorescence spectrometry (melting cast glass method).

Introduction

As there are many elements involved in the detection of ferrochromium, the applicable scope and applicable methods of the elements are different. In order to ensure chromium The iron detection standards are convenient and accurate. For the analysis methods of different elements of ferrochromium, a national standard system supporting the detection of ferrochromium has been established.

GB/T 5687 (all parts) is the basic standard for ferrochrome testing in my country, and it is planned to consist of the following thirteen parts. But some parts have been abolished, Need to pay attention to during use.

---GB/T 5687.1-1985 "Methods for chemical analysis of ferrochromium". The purpose is to measure chromium The chromium content in iron uses the ammonium persulfate oxidation volumetric method. This part has been abolished.

---GB/T 5687.2-2007 "Determination of ferrochromium, silicon-chromium alloys and chromium-nitride silicon content-Perchloric acid dehydration gravimetric method". Item The purpose is to measure the silicon content in ferrochrome, silicon-chromium alloy and ferrochrome nitride, using the perchloric acid dehydration gravimetric method.

---GB/T 5687.3-1985 "Methods for chemical analysis of ferrochromium, the molybdenum blue photometric method for the determination of phosphorus content". The purpose is to measure the phosphorus in ferrochrome The content is based on the molybdenum blue light method. This part has been abolished.

---GB/T 5687.4-2016 "Determination of Nitrogen Content of Ferrochromium Nitride and High Nitrogen Chromium Ferro-Nitrogen Distillation-Neutralization Titration Method". The purpose is to test To measure the nitrogen content in ferrochrome nitride and high-nitrogen ferrochrome, use the distillation-neutralization titration method.

---GB/T 5687.5-1988 "Methods for Chemical Analysis of Ferrochromium. Determination of Carbon Content by Infrared Absorption Method". The purpose is to measure the Carbon content, using infrared absorption method. This part has been abolished.

---GB/T 5687.6-1988 "Methods for Chemical Analysis of Ferrochrome Coulometric Determination of Carbon Content". The purpose is to measure the carbon content in ferrochrome Quantities, using Coulomb method. This part has been abolished.

---GB/T 5687.7-1988 "Methods for chemical analysis of ferrochrome gravimetric determination of carbon content". The purpose is to measure the carbon content in ferrochrome The amount, using the weight method. This part has been abolished.

---GB/T 5687.8-1988 "Methods for Chemical Analysis of Ferrochromium. Determination of Sulfur by Infrared Absorption Method". The purpose is to measure the Sulfur content, using infrared absorption method. This part has been abolished.

---GB/T 5687.9-1988 "Methods for Chemical Analysis of Ferrochromium. Determination of Sulfur by Combustion Neutralization Titration". The purpose is to measure the ferrochrome For the sulfur content, use the combustion neutralization titration method. This part has been abolished.

---GB/T 5687.10-2006 "Determination of chromium, iron and manganese content by flame atomic absorption spectrometry". The purpose is to measure the ferrochrome The content of manganese is based on flame atomic absorption spectrometry.

---GB/T 5687.11-2006 "Determination of chromium iron titanium content Diantipyrine methane spectrophotometric method". The purpose is to measure The content of titanium in ferrochromium is determined by the diantipyrine methane spectrophotometric method.

---GB/T 5687.12-2020 "Determination of chromium iron phosphorus, aluminum, titanium, copper, manganese, calcium content inductively coupled plasma atomic emission Spectroscopy. The purpose is to measure the content of phosphorus, aluminum, titanium, copper, manganese, and calcium in ferrochromium, using inductively coupled plasma atomic emission light Spectrum method.

Warning---Personnel using this document should have formal laboratory work experience. This document does not indicate all possible safety issues question. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This document describes the determination of chromium, silicon, manganese, titanium, vanadium, and iron by wavelength dispersive X-ray fluorescence spectrometry.

This document is applicable to the determination of chromium, silicon, manganese, titanium, vanadium and iron content in medium and high-carbon ferrochromium alloys. The measurement range of each element is shown in Table 1.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 4010 Collection and preparation of samples for chemical analysis of ferroalloys

GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) Part 1: General principles and definitions

GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) Part 2: Determine the repeatability of standard measurement methods Basic methods of sex and reproducibility

GB/T 8170 Numerical rounding rules and the expression and determination of limit values

GB/T 15000.3 Work Guidelines for Standard Samples (3) General principles and statistical methods for the determination of standard samples

GB/T 16597 General Rules of X-ray Fluorescence Spectrometry for Analysis Methods of Metallurgical Products

GB/T 28372 General Rules for Sampling and Sample Preparation of Ferroalloys

YB/T 082 Technical Specification for Standard Samples for Analysis of Metallurgical Products

JJG810 Wavelength Dispersive X-ray Fluorescence Spectrometer

3 Terms and definitions

There are no terms and definitions that need to be defined in this document.