Valid

GB/T 42122-2022Rubber, vulcanized or thermoplastic - Determination of abrasion resistance(the method of Improved Lambourn test machine) (English PDF)

Preview PDF

This is a limited preview

Buy now to download the full PDF (30 pages)

Need quotation for your management?

Get a formal quotation for GB/T 42122-2022 in 30 minutes.

Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 30, 2022

Implementation date

April 1, 2023

Scope

GB/T 42122-2022 (Rubber, vulcanized or thermoplastic - Determination of abrasion resistance(the method of Improved Lambourn test machine)) is available as an English-translated PDF.

GB/T 42122-2022 is the Chinese standard "Rubber, vulcanized or thermoplastic - Determination of abrasion resistance(the method of Improved Lambourn test machine)".

Its scope clause reads: This document describes a method for the determination of the abrasion resistance of rubber using a modified Lamborn Abrasion Tester. The disc-shaped rubber sample and the grinding wheel are pressed against each other under a specified load, and rotate at different linear speeds through an independent drive system.

The high speed causes relative slippage between the sample and the grinding wheel, which causes wear loss. The test results are expressed in unit wear time or unit stroke Indicated by volume loss and/or abrasion resistance index compared to a reference compound.

The improved Lamborn abrasion testing machine can independently set various abrasion conditions, such as slip rate, line speed and load, and this method is suitable for each Various rubber products, especially tire compounds, are evaluated under such harsh conditions.

An example of a test for tire tread compounds is given in Appendix A. Its clauses include terms and definitions.

Found what you need?

Document preview — GB/T 42122-2022

National Standard of the People's Republic of China

ICS: 83.060
Classification: G 40

Issued by: State Administration for Market Regulation, China National Standardization Administration

foreword
Introduction
1 Scope
2 Normative references
3 Terms and Definitions

1 Scope

This document describes a method for the determination of the abrasion resistance of rubber using a modified Lamborn Abrasion Tester.

The disc-shaped rubber sample and the grinding wheel are pressed against each other under a specified load, and rotate at different linear speeds through an independent drive system.

The high speed causes relative slippage between the sample and the grinding wheel, which causes wear loss. The test results are expressed in unit wear time or unit stroke

Indicated by volume loss and/or abrasion resistance index compared to a reference compound.

The improved Lamborn abrasion testing machine can independently set various abrasion conditions, such as slip rate, line speed and load, and this method is suitable for each

Various rubber products, especially tire compounds, are evaluated under such harsh conditions. An example of a test for tire tread compounds is given in Appendix A.

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document.

GB/T 533 Determination of density of vulcanized rubber or thermoplastic rubber (GB/T 533-2008, ISO 2781.2007, IDT)

GB/T 2481.1 Detection and marking of abrasive grain size composition for bonded abrasive tools Part 1.Coarse abrasive grains F4~F220 (GB/T 2481.1-1998, ISO 8486-1.1996, EQV)

GB/T 2484 General Requirements for Bonded Abrasives (GB/T 2484-2018, ISO 525.2013, MOD)

GB/T 2941 General procedure for specimen preparation and adjustment of rubber physical test methods (GB/T 2941-2006, ISO 23529.2004,

IDT)

GB/T 9258.1 Particle size analysis of abrasives for coated abrasives Part 1.Particle size composition (GB/T 9258.1-2000,

ISO 6344-1.1998, IDT)

JB/T 7498 coated abrasive sandpaper

Note. GB/T 25269-2010 Guidelines for Calibration of Rubber Test Equipment (ISO 18899.2004, IDT)

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 wear abrasion

The loss of the surface of a material due to friction.

[Source. ISO 23794.2015,3.1] […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 30 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 2781.2007 · ISO 8486 · ISO 525.2013 · ISO 23529.2004 · ISO 6344 · ISO 18899.2004

How to Download GB/T 42122-2022

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.