GB/T 47996-2026Composite rolls (English PDF)

Foreword

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

Introduction

This document applies to rolls with liquid-liquid, liquid-solid, solid-solid, and surface-coated composite methods, including combined, static, centrifugal, and stacked methods.

Rolls for welding, electroplating hard chrome, plasma spraying, supersonic spraying, laser cladding, jet deposition, hot isostatic pressing, forging composite, electroslag composite, etc.

High-performance rolling mill rolls are key to energy conservation, emission reduction, and green, low-carbon development in the steel industry's rolling process. With high performance as the goal, the rolling mill roll industry is developing... Composite roll manufacturing technology uses combination or composite forming methods to produce composite rolls, achieving a combination of high-performance outer layers and high-strength, tough cores.

Rolls have become the inevitable direction for the development of high-performance rolls.

This document outlines the production, testing, and quality evaluation standards for composite rolls, providing professional technical support for their industrial application. According to reports, this will contribute to high-quality development.

1 Scope

This document specifies the ordering requirements, main processes, technical requirements, test methods, inspection rules, marking, packaging, and storage of composite rolls. Quality certificate.

This document applies to composite rolls (including roll rings) used in the rolling of metallic materials prepared by combined and metallurgical processes.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies to this document.

GB/T 222 Permissible Deviations in Chemical Composition of Finished Steel and Alloy Products

GB/T 699 High-quality carbon structural steel

GB/T 1503 Cast steel rolls

GB/T 1504 Cast iron rolls

GB/T 1804 General tolerances - Tolerances for linear and angular dimensions without specified tolerances

GB/T 3077 Alloy Structural Steel

GB/T 4336 Determination of Multi-Element Content in Carbon Steel and Medium-Low Alloy Steels by Spark Discharge Atomic Emission Spectrometry (Conventional Method)

GB/T 5371 Limits and Fits. Calculation and Selection of Interference Fits

GB/T 11379 Chromium plating for engineering use in metallic coatings

GB/T 12604.1 Nondestructive Testing Terminology - Ultrasonic Testing

GB/T 13313 Test methods for Shore and Leeb hardness of rolling mill rolls

GB/T 13314 General Technical Requirements for Forged Steel Cold Rolling Work Rolls

GB/T 15546-2022 Metallurgical Roll Terminology

GB/T 20066 Sampling and Sample Preparation Methods for the Determination of Chemical Composition of Steel and Iron

GB/T 42124.3 Product Geometric Specification (GPS) - Dimensions and Geometric Tolerances of Molded Parts - Part 3: Dimensional Tolerances of Castings Geometric tolerances and machining allowances

GB/T 42530 Thermal Spraying Application Guidelines

GB/T 46218 Support Rollers

JB/T 3733 Technical Conditions for Large Forged Alloy Steel Hot Rolls

JB/T 14363 Technical Specification for Composite Roll Rings of Section Steel Rolling Mills

3 Terms and Definitions

The terms and definitions defined in GB/T 12604.1 and GB/T 15546-2022, as well as the following terms and definitions, apply to this document.