GB/T 18930-2020 (English Version)

Standard No.: GB/T 18930-2020
Language: Chinese, Available in English version
Release Date: 2020
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 18930-2020
Replace: GB/T 18930-2002

Scope: This standard defines the terms and definitions related to refractory raw materials, products, processes, construction, performance and equipment. This standard applies to refractory materials and related industries. 2 Terms and Definitions

Introduction

Background of Standard Revision and Technological Evolution

GB/T18930-2020, as the basic terminology standard in the field of refractory materials, has achieved a 104% increase in terminology compared to the 2002 version (142→290 items), adopts the ISO836:2001 international standard framework and completes localization adaptation. The main technological changes are reflected in:

Dimensions	2002 Edition	2020 Edition	Technical Differences
Terminology	Single Chapter	6 major technical classifications	New classifications such as raw materials/equipment
Performance indicators	Basic performance	157 new items	Added high-temperature dynamic test methods
Product categories	Traditional products	21 categories updated	Supplement of new materials such as carbon composites

Classification and Analysis of Core Terms

2.1 Raw Material Terms

For the first time, the standard clearly defines 23 raw materials such as periclite sand (MgO≥85%) and dense silica, among which:

Double-screen/single-screen refractory raw materials: clarify the difference in particle size control process
Waste rock classification: refine the definition of impurities such as coal gangue and melt nodules

2.2 Product Terms

92 new product definitions such as ladle air bricks and polycrystalline fibers, with key technical features:

Case: Refractory ceramic fiber products
The standard subdivides into 8 forms such as blankets/boards/felts, clarifies the biosolubility requirements of alkaline earth silicate fibers (AEF), and guides the selection of high-temperature thermal insulation.

Implementation and application suggestions

Selection and matching: Select materials according to the standard 2.5.32 refractoriness and 2.5.33 load softening temperature indicators
Construction control: Refer to 2.4.8 wet masonry/2.4.9 dry masonry process definition standard operation
Quality inspection: Use 2.5.67 bursting resistance temperature and other new test methods to evaluate material stability

GB/T 18930-2020 history

2020 GB/T 18930-2020 Terminology for refractories
2002 GB/T 18930-2002 Terminology for refractories