ISO 4386-3:2018 PDF
Plain bearings — Metallic multilayer plain bearings — Part 3: Non-destructive penetrant testing
Plain bearings — Metallic multilayer plain bearings — Part 3: Non-destructive penetrant testing
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 14
- Дата публикации:
- 17 июля 2018 г.
- Издание:
- ISO IS 4386 edition 2 version 1
- ICS:
- 21.100.10
This document specifies a non‑destructive penetrant testing for determining bond defects and discontinuities in the sliding surface of the bearing. The penetration method is used to detect a) bond defects in the transitional area between the bearing backing/bearing material on the end faces and joint faces of multilayer plain bearings which cannot be detected by the ultrasonic testing method specified in ISO 4386‑1, and b) discontinuities in the sliding surface of the bearing. The penetration method is applicable, in principle, to finished multilayer plain bearings. The bond test is usually carried out on cast multilayer plain bearings, with a backing consisting of steel, cast steel or cast bronze. It can also be used as a non-production method to aid detection of manufacturing process defects with other bearing material types. Bearing backings which cannot be tin-plated, or only with difficulty, such as perlitic cast iron, rust-resistant steel and cast aluminium, cannot be tested since no bond is possible between the bearing material and bearing backing.
Abstract
Overview
ISO 4386-3:2018 specifies a non‑destructive penetrant testing (liquid penetrant inspection, LPI) method for metallic multilayer plain bearings. The standard is focused on detecting bond defects in transitional areas between bearing backing and bearing material (end faces and joint faces) and on identifying surface discontinuities on the sliding surface that are not always detectable by ultrasonic methods. It applies, in principle, to finished multilayer plain bearings-most commonly cast bearings with steel, cast steel or cast bronze backings-and is intended for use by trained NDT personnel.
Key topics and requirements
- Scope of inspection
- Detects bond defects in transitional areas and discontinuities in sliding surfaces.
- Not suitable for backings that cannot be tin‑plated (e.g., perlitic cast iron, stainless steels, cast aluminium).
- Preparation
- Surfaces must be clean and dry; maximum drying temperature 55 °C.
- Surface roughness requirement: R ≤ 5 µm.
- Mechanical and chemical pre‑cleaning procedures are specified to avoid sealing defects.
- Penetrant application
- Use water‑removable or solvent‑removable penetrants.
- Test surface temperature: 10 °C to 50 °C.
- Penetration time: 10–20 minutes (≥20 min for very viscous penetrants).
- Removal of excess penetrant
- Water‑based: rinse with water at hydrostatic pressure
Технические детали
- Технический комитет
- ISO/TC 123/SC 2 - Materials and lubricants, their properties, characteristics, test methods and testing conditions
- SKU
- ISO 4386-3:2018
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