Part Buyers Authority Issue #3

Constant upgrading and calibration of equipment guarantees that machine inconsistencies are avoided. With these factors eliminated, work centers are manned to assist in meeting customer deadlines and providing the required time to set up parts for consistency, perform adequate in-process checks with documentation, and machine them to the highest quality standards in today’s marketplace. QUALITY Inspection protocol is serious business for aerospace parts. We recommend accurate final checks that are verifiable and documented to AS9102 format for finished parts. Ensuring that any machining operation is aggressive in the early detection of inconsistencies using in- process checking at all stages along the way is the most valuable way to avoid non-conforming parts. Every process requires first piece approval prior to further machining to isolate and correct any inconsistencies before production release. To verify these checks, we utilize Digital Equipment, Programmable CMM, and state-of-the-art Programmable Visual Inspection equipment all calibrated semiannually to provide accurate checks and verification of all features required. Co-Authored by: Bud Martin After orders are placed, and these preliminary plans are reviewed, detailed manufacturing plans are developed by the engineering group, who designates the materials, processes, work centers and services that will ultimately make this project a success. This plan details the exact features and tolerances that are to be machined, including allowances for finish machining and plating. With a thorough knowledge of materials, heat treat, plating specifications – many processing and dimensional errors are eliminated as the project is completed. Methodically going through each step, also ensures that you can be informed throughout the entire process. MANUFACTURING The aerospace industry requires expertise working with high performance alloys including: Inconel, Nickel, Titanium, and Aluminum alloys. In order to machine complex parts from these high performance materials, continuous improvement regarding the latest tools and education should be standard in any machining organization. The planning starts at the estimation stage by making and documenting a basic manufacturing plan and selecting the best processes and machinery that will meet the drawing requirements. This thorough drawing review also considers the many material specifications, heat treat, plating and other outside services that are so common in today’s aerospace markets. Contact: GREG DYSINGER [email protected] 13 Visit partbuyersauthority.com t o SUBSCRIBE o r CONTRIBUTE as an author. Inconel Stainless Steel (High Heat) Precision Machined Jet Engine Component Fuel/Oil Delivery This high performance alloy has many complex features on many different planes that must be machined to very close tolerances of less than .001 inch. All intersecting bores must blend without steps and finishes must be of high quality to avoid scratches and blemishes. Extreme hardness and high tool wear are just a few of the many challenges when machining this material and this component. Maraging 250 Ultra High Strength Steel Mars 2020 Rover Drill Component Special processing was required to machine this mission critical component, from a 3D model through heat treat. This part has an extremely tight tolerance spherical internal bore and thread milled holes.