MIL-STD-866 Grinding Of Chrome Plated Steel And Steel Parts Heat Treated To 180,000 Psi Or OverThis standard establishes the requirements for grinding of martensitic high strength steel heat-treated to 180,000 pounds per square inch psi, ultimate tensile strength uts and above, and the grinding of chromium plating applied to such high strength steel, when such parts are intended for use in components for man-rated flight hardware.

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2.       APPLICABLE DOCUMENTS

2.1                 General

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2.2                 Government documents

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2.2.1              Specifications, standards, and handbooks

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2.3                 Non-Government standards and publication

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2.4                 Order of precedence

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3.       DEFINITIONS (Not Applicable)

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4.       GENERAL REQUIREMENTS

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4.1                 Materials and equipment

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4.1.1              Materials

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4.1.2              Equipment

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4.2                 Processing

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4.2.1              Grinding process

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Table I

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4.2.2              Cleaning

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5.       DETAILED REQUIREMENTS

5.1                 General

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5.2                 Responsibility for inspection

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5.3                 Inspection requirements and procedures

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5.3.1              Ground surface inspection

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5.3.2              Magnetic particle inspection

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5.3.3              Nital etch inspection

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5.3.4              Ground holes

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5.3.5              Chromium plate

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5.3.6              Penetrant inspection

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5.3.7              Magnetic particle inspection

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5.4                 Grinding practices

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5.4.1              In-house control document

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5.4.2              Parametric studies

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5.4.3              Grinding practice guidelines

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5.4.3.1           Grinding equipment

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5.4.3.2           Grinding wheel characteristics

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5.4.3.3           Coolants

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5.4.3.4           Wheel dressing

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5.4.3.5           Wheel speed

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5.4.3.6           Work speed

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