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I work in tribology and am lost in data. How can I make my job easier? Three parts to this project 1.A Review of ASM Handbook Volume 5 2.A summary of a.

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Presentation on theme: "I work in tribology and am lost in data. How can I make my job easier? Three parts to this project 1.A Review of ASM Handbook Volume 5 2.A summary of a."— Presentation transcript:

1 I work in tribology and am lost in data. How can I make my job easier? Three parts to this project 1.A Review of ASM Handbook Volume 5 2.A summary of a specification for one process listed in ASM Handbook 5 3.How many of these processes are required to make one part? What can be done to capture the data? A Review of Alloy Steel Processing and Perspective on the Data used in Tribological Decision Making

2 A Review of ASM Handbook Volume 5 The Bible of Surface Engineering Project reviewed section on Alloy Steel Identified 88 types of processes and processes used in preparing steel parts

3 A summary of a specification: SAE AMS2460 AMS2460: Plating, Chromium Scope – Purpose – Application Restriction – Safety-Hazardous Materials – Classification Classes Appearance Applicable documents – SAE Publications – ASTM Publications – Aerospace Industries Association Publications

4 A summary of a specification: SAE AMS2460 (continued) Technical Requirements – Material Basis Metal Quality Parts dimensions shall be met after plating Pening – Preparation Stress Relief Treatment Cleaning Electrical Contact Points Zincate treatment for aluminum alloys – Procedure Parts shall be plated by electrodeposition onto a properly prepared surface. Procedures and parameters shall meet all requirements in this specification. Underplating – Class 1 plating shall be applied over an intermediate nickel plating – Class 2 plating shall be applied directly onto the substrate material (with exceptions) – Underplate shall not be substituted for any of the chromium plate thickness All plating re-start procedures shall have prior approval Notes on Hydrogen Embrittlement relief – Properties Thickness – Restriction on thicknesses for recessed surfaces – Class 1 minimum thickness ( in) – Class 2 minimum thickness (0.002 in) Adhesion requirements and testing (knife-chisel or blend test) – Class 2 Adhesion evaluation – optional method Hardness (Class 2 only) Porosity (Class 2 only) – Class 2 plating, criteria for passing the testing in ,. – Description of Potassium Ferricyanide (Ferroxyl) Porosity Test Hydrogen Embrittlement – Quality Surface texture and appearance requirements – Boundary requirements Luster requirements

5 A summary of a specification: SAE AMS2460 (continued) Quality Assurance Provisions – Responsibility for Inspection – Classification of Tests Acceptance Tests include thickness, adhesion, and quality of samples from each lot. Hardness, porosity, and hydrogen embrittlement may also be acceptance test criteria Description of Periodic Tests – Process Control Records – Interruption of production Preproduction tests – Requirement to pass hydrogen embrittlement tests before plating production parts – Sampling - definition of lot Nondestructive tests - description Destructive tests – description Sample configuration – Samples for thickness, adhesion and hardness tests – Samples for porosity tests – Samples for Hydrogen Embrittlement tests – Periodic and Preproduction Test Specimens for Thickness, Adhesion, Hardness, and Porosity – Approval Approval of process and control factors – Records of test results Test requirements and approvals for process changes Description of control factors – Reports – requirements for shipment – Resampling and Retesting Requirements for retesting parts after a failed test – Specification of stripping method and criteria Definition of nonconforming process per test results and follow-on actions

6 A summary of a specification: SAE AMS2460 (continued) Quality Assurance Provisions – Responsibility for Inspection – Classification of Tests Acceptance Tests include thickness, adhesion, and quality of samples from each lot. Hardness, porosity, and hydrogen embrittlement may also be acceptance test criteria Description of Periodic Tests – Process Control Records – Interruption of production Preproduction tests – Requirement to pass hydrogen embrittlement tests before plating production parts – Sampling - definition of lot Nondestructive tests - description Destructive tests – description Sample configuration – Samples for thickness, adhesion and hardness tests – Samples for porosity tests – Samples for Hydrogen Embrittlement tests – Periodic and Preproduction Test Specimens for Thickness, Adhesion, Hardness, and Porosity – Approval Approval of process and control factors – Records of test results Test requirements and approvals for process changes Description of control factors – Reports – requirements for shipment – Resampling and Retesting Requirements for retesting parts after a failed test – Specification of stripping method and criteria Definition of nonconforming process per test results and follow-on actions

7 A summary of a specification: SAE AMS2460 (continued) Preparation for Delivery – Packaging and Handling – Shipment preparation Acknowledgement of specification Rejections – definition Notes – Notes on document revision – Notes on compliance with dimensions – Notes on part delivery and processibility – Guidance Guidance on shot peening Guidance on hydrogen embrittlement – Control and testing – Alkaline cleaning – Acid dip – Final step in cleaning – Plating of nickel alloys Class 1 Chromium Plating – Function – Deposition » Note on plating thickness Class 2 Chromium Plating – Description – Designations – Plating by electrodisposition – Recommended maximum thickness – Note on grinding – Compliance with ARP4992 – Test Specimen material – acceptance criteria Transformation Hardening Steels CRES High Alloy Steels Tool Steels Heat Resistant Alloys Aluminum Alloys Titanium Alloys Copper Alloys – Note on Hydrogen Embrittlement for certain alloys – Terms used for reference – Units of measurement

8 The Perspective SAE ARP1631 Manufacturing Sequence for Fabrication of High- Strength Steel Parts, Figure 1

9 The Perspective (continued) SAE ARP1631 Manufacturing Sequence for Fabrication of High- Strength Steel Parts, Figure 1

10 The Perspective (continued) SAE ARP1631 Manufacturing Sequence for Fabrication of High- Strength Steel Parts, Figure 1


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