GB/T 18329.4-2021
Plain bearings—Metallic multilayer plain bearings—Part 4:Non-destructive ultrasonic transmission testing of bond of thickness greater than or equal to 0.3 mm (English Version)

Standard No.

GB/T 18329.4-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 18329.4-2021

Scope

This part of GB/T18329 specifies the test method for determining the bonding quality between the bearing alloy and the backing by liquid immersion ultrasonic penetration method. This standard specifies the evaluation method for the receiving probe placed on the outside of the backing to receive the penetrating wave emitted by the transmitting probe inside the alloy layer. If the method of transmitting probe outside and receiving probe inside is adopted, the signal processing method is the same. This part is applicable to flangeless bearing bushes and bushings with alloy layer thickness ≥ 0.3 mm and inner diameter ≥ 40 mm with copper back and steel back, and thrust flanges and plane guide rails with copper back and steel back with alloy layer thickness ≥ 0.3 mm Bonding quality inspection of rectangular plain bearings. Refer to this section for cast iron backing bearings. Due to the internal chamfers at both ends of the sliding bearing and its vicinity, the edge of the mating surface, the oil hole, the oil pocket, the oil groove, the positioning lip and other structures, and the edges on both sides of the dovetail groove, there are uncertain reflection waves that affect the penetration wave. Intensity, so this method is not suitable for the detection of such areas. See GB/T18329.3 for the evaluation method of the bonding quality of the backing and the alloy layer at these parts. This part only makes a qualitative evaluation of the bonding quality of the bearing backing and the alloy layer. The penetration wave height of the ultrasonic wave passing through the bonding surface of the backing and the alloy is used as the basis for evaluating the bonding quality.

GB/T 18329.4-2021 Referenced Document

• GB/T 18329.3 Plain bearings—Metallic multilayer plain bearings—Part 3: Non-destructive penetrant testing
• GB/T 9445 Non-destructive testing.Qualification and certification of NDT personnel

GB/T 18329.4-2021 history

• 2021 GB/T 18329.4-2021 Plain bearings—Metallic multilayer plain bearings—Part 4:Non-destructive ultrasonic transmission testing of bond of thickness greater than or equal to 0.3 mm

GB/T 18329.4-2021 -All Parts