GMW16578

Description / Abstract: GMW16578, 2nd Edition, April 2017 - Acceptance Criteria for Voids in Cast Aluminum Rotors

Introduction

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose. This standard defines the acceptable levels of surface porosity and internal voids in as-cast and fully machined aluminum rotor castings used in vehicles containing electric machines.

This document describes the allowable porosity limits in the cast aluminum regions of high pressure die cast rotors. It also serves as an acceptance standard for internal and surface anomalies and discontinuities.

This standard does not preclude the requirements of any other further refined inspection specification (example: control plan) or engineering drawing requirement as long as the minimum requirements of this standard are met or exceptions approved by General Motors.

Applicability. As-cast and fully machined aluminum induction rotor castings.

Remarks.

Retention of Test Measurements. All test measurements shall be recorded and retained per GM record retention policies.