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GB/T 42087-2022Hydraulic fluid power - System - Clean-up procedures and verification of cleanliness method (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 30, 2022

Implementation date

December 30, 2022

Scope

GB/T 42087-2022 (Hydraulic fluid power - System - Clean-up procedures and verification of cleanliness method) is available as an English-translated PDF.

GB/T 42087-2022 is the Chinese standard "Hydraulic fluid power - System - Clean-up procedures and verification of cleanliness method".

Its scope clause reads: The methods described in this document apply to. a) Inspection of oil pollution degree of hydraulic system assembly; b) Verification of the target cleanliness of the hydraulic system before leaving the factory; c) If necessary, purging the hydraulic system to target cleanliness.

The cleaning steps specified in this document are not intended to replace a suitable system cleaning procedure, see ISO 23309 for system cleaning procedures. hydraulic Parts and components used in the system should be cleaned before assembly, see ISO 18413 for guidelines. Its clauses include terms and definitions.

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Document preview — GB/T 42087-2022

National Standard of the People's Republic of China

ICS: 23.100.60
Classification: J 20

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

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Inspection equipment
5 samples
6 Inspection procedure
7 Acceptance criteria
8 Inspection report
9 Labeling instructions
Appendix A (informative) Hydraulic system assembly cleanliness inspection report template
Appendix B (Informative) Example of Cleanliness Inspection Report of Hydraulic System Assembly

1 Scope

The methods described in this document apply to.

a) Inspection of oil pollution degree of hydraulic system assembly;

b) Verification of the target cleanliness of the hydraulic system before leaving the factory;

c) If necessary, purging the hydraulic system to target cleanliness.

The cleaning steps specified in this document are not intended to replace a suitable system cleaning procedure, see ISO 23309 for system cleaning procedures. hydraulic

Parts and components used in the system should be cleaned before assembly, see ISO 18413 for guidelines.

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.

Note. GB/T 17484-1998 Identification and Control of Purification Methods for Hydraulic Oil Sampling Containers (idtISO 3722.1976)

Note. GB/T 17489-1998 Hydraulic Particle Contamination Analysis Extract liquid samples from working system pipelines (idtISO 4021.1992)

ISO 4407 Method for determination of degree of particle contamination by optical microscope for contamination of hydraulic transmission fluids (Hydraulicfluidpow- optical microscope)

Note. GB/T 20082-2006 hydraulic transmission liquid pollution using optical microscope to determine the method of particle pollution (ISO 4407.2002, IDT)

Note. GB/T 17446-2012 Fluid Power System and Component Vocabulary (ISO 5598.2008, IDT)

ISO 11500 Hydraulic transmission uses the automatic particle counting method of the shading principle to determine the particle pollution degree of liquid samples (Hydraulicfluid

Note. GB/T 37163-2018 hydraulic transmission adopts the automatic particle counting method of the shading principle to determine the particle pollution degree of liquid samples (ISO 11500.2008,

MOD)

Note. GB/T 37162.1-2018 Monitoring of Particle Pollution Degree of Hydraulic Transmission Liquid Part 1.General Rules (ISO 21018-1.2008, MOD)

3 Terms and Definitions

The terms and definitions defined in ISO 5598 and the following apply to this document. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 4407 · ISO 4407.2002 · ISO 5598.2008 · ISO 11500 · ISO 11500.2008 · ISO 21018

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