GMW-R - GMW17533
Process Requirements for Steel Stamping Suppliers
|Publication Date:||1 July 2018|
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 describes the minimum process requirements for steel stampings and stamping suppliers, known throughout the rest of this specification as the ʺProcessʺ. The purpose of these requirements is to ensure the final stamping parameters meet the overall performance requirements as it relates to fit, form and function. This standard applies to finished parts produced by both GM Suppliers and internal GM facilities, known throughout the rest of this specification as the ʺPart Supplierʺ. Any deviations from this specification will require approval, and applicable signatures on the Action Plan PPAP Worksheet available from GM Supply Power at Uniform Resource.
Applicability. Steel Stampings.
Note: For Press Hardened Steel (PHS) steel requirements refer to GMW14400. For PHS process Requirements refer to GMW16579. For stampings manufactured with dual phase steel refer to SAE 2015-01-0529 Paper, Case Studies of Edge Fracture of Dual Phase Steel Stampings.
Remarks. This specification is intended to evaluate a Part Suppliers ability to produce steel stampings that meet GM quality requirements. Emphasis is placed on the ability to supply a uniform and consistent part. While this specification details the requirements for global qualification of the component process, additional information and/or qualification submissions may be requested by the GM regional Supplier Quality Engineer (SQE) representatives. Addressed in this specification are the following:
• Forming Simulation Analysis for complex and/or suspect stampings.
• Forming Limit Diagram (FLD) verification.
• Material incoming inspection including verification of mechanical properties, steel chemistry, coating weight and coated type (for coated steel).
• Lubrication Requirements. See 9981881.
• Process controls, including Tool Setup Documentation (Die Setup Check Sheet), Total Run Analysis (TRA), and Active Inspection Process.
• Deviation to process.
• Production Part Approval Process (PPAP), Automotive Industry Action Group (AIAG) PPAP-4 (or equivalent).
• Quality issue response, i.e., Problem Resolution Report (PRR), Problem Resolution and Tracking System (PRTS), General Procedure Number 5 (GP-05), Read Across, 5 Phase, Eight Diamond (8D).
Requirement Wording Conventions. Within this specification the following conventions are applied:
• The word "shall" states a binding requirement which verifiable proof shall be provided to GM within 24 h upon request.
• The word "should" denotes a preference or desired conformance.