GB/T 42155-2023Hydraulic fluid power - Spin-on filters method for verifying - The rated fatigue life and the rated static burst pressure of the pressure-containing envelope (English PDF)

Foreword

This document was issued on 17 March 2023 by the State Administration for Market Regulation; Standardization Administration of the PRC and takes effect on 1 October 2023.

It is a GB/T standard: recommended rather than compulsory, but it is the text a Chinese reviewer applies when assessing a submission.

1 Scope

GB/T 42155-2023 verifies two ratings of the pressure-containing envelope of a spin-on filter, a filter with a disposable element and a limited life: the rated fatigue life and the rated static burst pressure. Test samples are defined first; a cyclic fatigue test then runs the envelope at its rated fatigue pressure to confirm the claimed life, and an explosion test, carried out on a hydraulic bench that supplies stable and controllable hydrostatic pressure, confirms the static burst pressure. Data expression fixes what the report carries, beginning with the rated fatigue life, the rated fatigue pressure and the number of cycles reached. An analogy method for checking the rated fatigue life, the rated fatigue pressure and the rated static burst pressure follows, and then a clause on consistency between the tested spin-on filter and the production part, so that a figure earned by one housing cannot be carried over to a housing that is no longer the same. Terms come from ISO 5598. A filter body sits in the pressure line and is loaded and unloaded every time the machine works, so it gives way by fatigue under repeated loading rather than by a single overload, and a rating for one without the other says little. For filter manufacturers, hydraulic system designers, and the test houses that certify them.

This document describes the inspection methods for the rated fatigue life and rated

static burst pressure of spin-on filter's pressure-containing envelope, which uses

disposable filter elements and has limited life.

Due to the short service life of the spin-on filter housing, the rated fatigue life of 100000

cycles is sufficient for typical industrial applications.

2 Normative references

The contents of the following documents constitute essential provisions of this

document through normative references in the text. Among them, for dated reference

documents, only the version corresponding to the date applies to this document; for

undated reference documents, the latest version (including all amendments) applies to

this document.

ISO 5598 Fluid power systems and components - Vocabulary

Note: GB/T 17446-2012 Fluid power systems and components - Vocabulary (ISO

5598:2008, IDT)

ISO/TR 19972-1 Hydraulic fluid power - Methods to assess the reliability of

hydraulic components - Part 1: General procedures and calculation method

3 Terms and definitions

The following terms and definitions as defined in ISO 5598 apply to this document.

When more than six spin-on filters fail in the test, the test data of all failed spin-on

filters shall be evaluated.

5.5.3 According to the provisions of ISO/TR 19972-1, use Weibull analysis method, to

calculate the B10 life Nf at 95% confidence level.

5.6 Inspection

If the calculated rated fatigue life (Nf) exceeds the recommended rated fatigue life

(100000 cycles, unless otherwise specified), the spin-on filter's rated fatigue life and

rated fatigue pressure pass the inspection.