ASME B18.18. 2-2009 pdf download
ASME B18.18. 2-2009 pdf download.lnspection and Quality Assurance for High-Volume Machine Assembly Fasteners.
2.4 Records
The supplier shall maintain and provide the purchaser logs and records of inspections and tests as required by this plan if requested. Such records shall indicate the nature and number of observations made, the number and type of deficiencies found, the quantities of material or parts approved and rejected, and the nature of the corrective action taken, clS appropriate. Records shall also include the disposition of rejected parts in accordance with para. 2.9 and shall be maintained for a minimum of 1 yr from the date of shipment of the parts.
2.5 Purchased Accessories and Parts
Accessories, services, and partially fabricated parts (e.g., washers, nuts, blanks, heat treating, plating, etc.) may he purchased by the prime contractor from subcontractors for use in the production of fasteners, provided the following conditions and requirements are met:
(a) The prime contractor shall he responsible to the user for the quality of the final product.
(b) The prime contractor shall be responsible for the implementation of all requirements of this plan, including records.
(c) All lots that are heat treated and/or finished by a subcontractor and all lots that are processed by a subcontractor following heat treatment and/or finishing operations shall undergo final inspection by the subcontractor or the prime contractor.
2.6 Raw Material
2.6.1 General. Raw material (rod, wire, or bar) shall be reviewed to determine that each coil or bundle has a mill identification and that each heat (batch, melt, cast, etc.) is accompanied by a mill certification of analysis or the equivalent. The raw material or its accompanying mill certification shall be inspected prior to release for fabrication to verify that it conforms to the material requirements specified.
2.6.2 General Quality. One fastener, taken at random from representative coils of rod or wire or from bundles of bars, shall be visually inspected to verify the general quality of the raw material and its condition following the forming process. The part shall be examined for evidence of pipe, cracks, seams, and other surface discontinuities according to applicable specifications.
2.7 Final Inspection
Each lot of fasteners shall be subjected to a final inspection. The final inspection is intended to verify lot identification and to inspect designated characteristics for conformance to related standards, specifications, and engineering drawings.
If a documented, verifiable, statistically based in-process inspection system is used by the fastener manufacturer, inspection sample sizes and reporting shall be in accordance with specified quality systems such as ASME, ASTM, or iSO.
2.8 Acceptance and Rejection
2.8.1 Basis of Rejection. Any coil of rod or wire or bundle of bars failing to meet the requirements of para. 2.6 shall be held for disposition.
2.8.2 Acceptance Criteria
2.8.2.1 Dimensional. If a single nonconforming characteristic is found in final inspection, the lot shall be held for disposition in accordance with para. 2.9.
2.8.2.2 Chemical and Mechanical. Chemical, mechanical, and other physical requirements are to be accepted per the requirements of ASTM F 1470.
2.8.3 Customer Inspection. If on receipt of the material the user discovers a single nonconforming part, he may sample the lot for such nonconforming characteristic(s) in accordance with ASME B18.18.1.
2.9 Disposition of Nonconforming Materials or Parts Records of disposition shall be maintained in accordance with para. 2.4.
2.9.1 Manufacturer’s Options. The manufacturer has the choice of the following options in the disposition of those materials or parts that have been found to contain discrepancies within his plant:
(a) They may be scrapped.
2.9.3 Reinspection. All pieces that have been sorted and/or reworked in accordance with para. 2.9.1 or para. 2.9.2 shall be resubmitted for lot sampling and inspection in accordance with para. 2.7 for the characteristic(s) found nonconforming and all other characteristics that would be affected by the repair or reprocessing operation(s). If no parts in the sample inspected are found nonconforming, the material may reenter the production flow or may he approved for delivery or use as applicable.
