ISO 23337:2024 - Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using the Improved Lambourn test machine

Standard No.: ISO 23337:2024
Release Date: 2024
Published By: International Organization for Standardization (ISO) IX / ISO
Latest: ISO 23337:2024

Introduction

Standard Technology Evolution and Background

The third edition (2024) of ISO 23337 replaces the second edition of 2016. The main updates include the addition of an optional parameter for specimen thickness. The standard is derived from an in-depth study of the wear mechanism of tire tread rubber. By independently controlling the slip rate (5%-80%), sliding speed (10-200m/min) and load (5-80N) of the modified Lambourn tester, it solves the problem of inaccurate slip rate control of traditional equipment.

Core Test Principles

Key Components	Technical Parameters	Functional Requirements
Rubber specimen	Diameter 49/63.5mm Thickness 5/10mm	Smooth surface, tested within 16h-4 weeks after vulcanization
Abrasive Wheel	Silicon Carbide F80-F100 Diameter 175/205/305mm	Linear speed difference produces 5%-80% slip rate
Abrasive feeding system	10-30g/min	Prevent the specimen from sticking to the grinding wheel surface

Key control points of the test process

Pre-grinding treatment: 10-20 seconds standard condition running-in
Formal test: Control the wear volume in the range of 0.1-0.2cm³
Result calculation:
Volume loss formula: V=Δm/(ρ×t) (mm³/min)
Wear resistance index formula: I=(V_ref/V_test)×100%

Typical application cases

Appendix A of the standard shows that at a slip rate of 30%, the wear resistance of NR and SBR rubbers is equivalent; at a slip rate of 15%, SBR performs better, which is consistent with the actual use conditions of truck tires (mainly NR/BR) and passenger car tires (mainly SBR).

Equipment calibration specifications

According to Appendix B of the standard, key calibration items include:

Torque sensor: 0-5N·m range, accuracy 0.01N·m
Load mechanism: 5-80N linear verification
Abrasive delivery rate: Dynamic monitoring during service life (10-30g/min)

Implementation suggestions

1. Specimen selection: 10mm thick specimens are recommended for low hardness rubber
2. Condition optimization: Adjust the slip rate parameters according to the actual working conditions of the product
3. Data comparability: The arbitration test must ensure that the test is completed within 72h-4 weeks after vulcanization
4. Safety protection: The test room must be sealed to prevent abrasive splashing, and waste abrasives must be treated as hazardous waste

ISO 23337:2024 Referenced Document

ISO 18899:2013 Rubber - Guide to the calibration of test equipment
ISO 23529 Rubber - General procedures for preparing and conditioning test pieces for physical test methods
ISO 2781 Rubber, vulcanized or thermoplastic - Determination of density
ISO 525 Bonded abrasive products — Shape types, designation and marking
ISO 8486-1 Bonded abrasives - Determination and designation of grain size distribution - Part 1: Macrogrits F4 to F220

ISO 23337:2024 history

2024 ISO 23337:2024 Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using the Improved Lambourn test machine
2016 ISO 23337:2016 Rubber, vulcanized or thermoplastic - Determination of abrasion resistance using the Improved Lambourn test machine
2007 ISO 23337:2007 Rubber, vulcanized or thermoplastic - Determination of abrasion resistance using the Improved Lambourn test machine
1972 ISO 23337:1972 Rubber, vulcanized or thermoplastic

Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using the Improved Lambourn test machine

ISO 23337:2024Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using the Improved Lambourn test machine