Special Process: Heat Treat System Assessment
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CQI-9 ???Aaron (cwang65@ford.com)
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CQI-9
Special Process: Heat Treat System Assessment
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Special Process: Heat Treat System Assessment
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AIAG PUBLICATIONS
AIAG????????
An AIAG publication reflects a consensus of those substantially concerned with its scope and
provisions.
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An AIAG publication is intended as a guide to aid the manufacturer, the consumer and the general
public.
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The existence of an AIAG publication does not in any respect preclude anyone from manufacturing,
Marketing, purchasing, or using products, processes, or procedures not conforming to the publication.
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CAUTIONARY NOTICE
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AIAG publications are subject to periodic review and users are cautioned to obtain the latest editions.
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MAINTENANCE PROCEDURE
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Recognizing that this AIAG publication may not cover all circumstances, AIAG has established a
maintenance procedure. Please refer to the Maintenance Request Form at the back of this document to
submit a request.
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APPROVAL STATUS
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The AIAG Quality Steering Committee and designated stakeholders approved this document for
publication on ____________.
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Published by:
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Automotive Industry Action Group
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26200 Lahser Road, Suite 200
Southfield, Michigan 48034
Phone: (248) 358-3570 • Fax: (248) 358-3253
AIAG Copyright and Trademark Notice:
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The contents of all published materials are copyrighted by the Automotive Industry Action Group unless otherwise indicated. Copyright is
not claimed as to any part of an original work prepared by a U.S. or state government officer or employee as part of the person’s official
duties. All rights are preserved by AIAG, and content may not be altered or disseminated, published, or transferred in part of such content.
The information is not to be sold in part or whole to anyone within your organization or to another company. Copyright infringement is a
violation of federal law subject to criminal and civil penalties. AIAG and the Automotive Industry Action Group are registered service
marks of the Automotive Industry Action Group.
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© 2006 Automotive Industry Action Group
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FOREWORD
Automotive Industry Action Group (AIAG) committees are made up of volunteers from member
companies in the automotive industry. The work of preparing process audits is done by AIAG
technical committees. The main task of technical committees is to prepare Automotive Standards and
System Requirements. Draft documents adopted by the technical committees are circulated to the
Steering Committee for review and consensus approval. Publication of the documents requires
approval by the Quality Steering Committee. The Quality Steering Committee would like to
acknowledge and thank the following individuals and their companies who have contributed time and
effort to the development of this document.
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ACKNOWLEDGEMENTS
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Core Members:
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Pete Batche – Textron Automotive Co.
Mel Dilley – DaimlerChrysler Corp.
Curt Holmes – Metaldyne
Ed Jamieson – Bodycote Thermal
Processing
Young Kim – Ford Motor Company
Brett Lenhausen – General Motors Corporation
Philip Mikula – TRW, Inc.
Murli Prasad – General Motors Corporation
Supporting Members:
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Todd Bensinger – DaimlerChrysler Corp.
Scott Brodersen – DaimlerChrysler Corp
Dave Calkins – DaimlerChrysler Corp
Leonard Gadzinski – Textron Automotive
Co.
Tim Green – BSI Americas, Inc.
Dave Hernacki – Commercial Steel
Treating, Corp.
Dean Higdon – Textron Automotive Co.
Medina Kaknjo – Ford Motor Company
Jeff Martin – ZF Friedrichshafen, AG
Mike Oberg – Induction Services, Inc.
Mike Wiezbowski – DaimlerChrysler Corp
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TABLE OF CONTENTS/????????
AIAG PUBLICATIONS/????????????????????????????????????.................................................................................................................1
CAUTIONARY NOTICE/??..............................................................................................................................1
MAINTENANCE PROCEDURE/????..........................................................................................................1
APPROVAL STATUS/????...........................................................................................................................1
FOREWORD/????????................................................................................................................................................2
ACKNOWLEDGEMENTS/????????.........................................................................................................................3
1.0 INTRODUCTION/????????..................................................................................................................................5
1.1 GENERAL/?? ....................................................................................................................................................5
1.2 PROCESS APPROACH/????.............................................................................................................................5
1.3 HEAT TREAT SYSTEM ASSESSMENT GOALS/?????????.........................................................................5
1.4 ASSESSMENT PROCESS/????..........................................................................................................................5
1.5 ASSESSOR QUALIFICATIONS/????? ..............................................................................................................6
1.6 OTHER REQUIREMENTS????.......................................................................................................................6
2.0 SCOPE/????????.....................................................................................................................................................7
2.1 GENERAL/?? ....................................................................................................................................................7
2.2 APPLICATION/?? ..............................................................................................................................................7
3.0 THE HEAT TREAT SYSTEM ASSESSMENT PROCEDURE????????????????????????????????????.............................9
APPENDIX A – PROCESS TABLES ????????????????????????????.......................................................................................10
APPENDIX B – GLOSSARY/????????????????????????????....................................................................................................17
ABOUT AIAG/???????????????????????? ..................................................................................................................................21
PURPOSE STATEMENT/???? ...............................................................................................................................21
CORE VALUES/????...........................................................................................................................................21
AIAG ORGANIZATION ???????...........................................................................................................................21
AIAG PROJECTS/?????? .....................................................................................................................................21
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1.0 INTRODUCTION????????????
1.1 General????????????
The work of preparing CQI 9: Special Process: Heat Treat System Assessment (HTSA) was carried
out through the AIAG Heat Treat Work Group. These heat treat requirements are complementary to
customer and product standards.
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The HTSA can be used to assess an organization’s ability to meet the requirements in this assessment,
as well as customer, regulatory, and the organization’s own requirements. The HTSA can also be used
between an organization and its suppliers.
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In the HTSA, the word “shall” indicates a requirement. Where the term “such as” is used, any
suggestions given are for guidance only.
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1.2 Process Approach????????????????
The HTSA supports the automotive process approach as described in ISO/TS16949:2002.
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1.3 Heat Treat System Assessment Goals????????????????????????????????????????
The goal of the HTSA is the development of a heat treat management system that provides for
continual improvement, emphasizing defect prevention and the reduction of variation and waste in the
supply chain.
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The HTSA, coupled with an internationally recognized quality management system and applicable
customer-specific requirements, defines the fundamental requirements for heat treat management
systems.
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The HTSA is intended to provide a common approach to a heat treat management system for
automotive production and service part organizations.
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1.4 Assessment Process????????????????
Ongoing assessments shall be conducted annually, unless otherwise specified by the customer, to
reexamine the continuing compliance with the HTSA. Each assessment shall include a review of the
organization’s systems using the HTSA. Successive Job Audits (Section 4.0 of this document) shall
sample parts from different automotive component manufacturers that require compliance to the
HTSA document.
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The assessment shall use the process approach to auditing as identified by the requirements of ISO/TS
16949:2002.
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1.5 Assessor Qualifications????????????????????????
Assessors shall have the following specific experience to conduct the HEAT TREAT SYSTEM
ASSESSMENT portion of the assessment:
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??Be an experienced quality management system (QMS) internal auditor (e.g., ISO 9000:2000,
ISO/TS
16949:2002)
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1.6 Other Requirements????????????????
The organization shall keep records as evidence of compliance to the requirements identified in the
HTSA, as well as all appropriate action plans to address any unsatisfactory ratings. These records
shall be readily available for review by any customer requiring compliance to the requirements within
this document?
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2.0 SCOPE????????????
2.1 General/2.1 ????????????
This document specifies process requirements for an organization or its suppliers performing
applicable heat treating, who need to
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??demonstrate ability to consistently provide product that meets customer and applicable regulatory
requirements, and enhance customer satisfaction through the effective application of the system,
including processes for continual improvement of the system.
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2.2 Application
All requirements of the HTSA are generic and are intended to be applicable to all organizations
performing the heat treat operations addressed in this document, regardless of type, size, and
product. Four Process Tables have been developed and the appropriate table(s) is to be referenced
during the assessment. The Process Tables are specific to heat treat processes as noted below:
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Process Table 1 – Ferrous?????????????
??Atmosphere Carburizing---????
??Atmosphere Carbonitriding---??????
??Carbon Restoration or Correction---???????
??Neutral Hardening (Quench and Temper)---???????????
??Austempering---?????
??Martempering---?????
??Tempering---??
??Precipitation Hardening – Aging---????
Process Table 2 – Ferrous?????????????
??Nitriding (Gas)—??
??Ferritic Nitrocarburizing (Gas or Salt)---???????
Process Table 3 – Aluminum Heat Treating---??????????????
Process Table 4 – Induction Heat Treating (Ferrous)---??????????
These Process Tables contain requirements for:---???????????
1. Process and Test Equipment/???????
2. Pyrometry/?????
3. Process Monitor Frequencies/??????
4. In-Process/Final Test Frequencies/???????????
5. Quenchant and Solution Test Frequencies/?????????
The Process Tables specify the tolerances of process parameters and the frequencies for checking
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