SAE AS 7112 2-1997 National Aerospace and Defense Contractors Accreditation Program Requirements for Fittings and Other Machined Components《国家航空航天和国防合同方授信项目接头和其它机械零件要求》.pdf

1、The Engineering Society mAcForAdwnchg Mobility . -Land Sea Air and Space, INTERNATIONAL 400 Commonwealth Drive, Warrendale, PA 15096-0001 AEROSPACE STANDARD Issued 1997-1 2 I Submitted for recognition as an American National Standard NATIONAL AEROSPACE AND DEFENSE CONTRACTORS ACCREDITATION PROGRAM R

2、EQUIREMENTS FOR FITTINGS AND OTHER MACHINED COMPONENTS I. 2. 2.1 2.2 SCOPE: This Aerospace Standard (AS) is to be used as a supplement to SAE AS71 12. In addition to the requirements contained in AS71 12, the requirements contained herein shall apply to suppliers seeking NADCAP Fluid System Componen

3、ts Accreditation for Fittings and Other Machined Components. REFERENCES: SAE Publications: Available from SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001. AS71 12 National Aerospace and Defense Contractors Accreditation Program (NADCAP) - Fluid System Components Manufacturing Requirements PRI

4、 Publications: Available from Performance Review Institute, 161 Thornhill Road, Warrendale, PA 15086- 7527. AC71 12 - National Aerospace and Defense Contractors Accreditation Program (NADCAP) - Fluid System Components Manufacturing Requirements NADCAP Fluid System Components Manufacturing Auditor Ha

5、ndbook SAE Technical Standards Board Rules provide that 7his report is published by CAE to advance the state of technical and engineering sciences. The use of mis repod is entirely voluntary, and its appicability and suitability for any parcular use, including any patent infringement arising therefr

6、om. is the sole responsibility of the user. SA reviews each technical report at least wery five years at Mich tirne it may be reaffirmed. revised. or cancelled. CAE invites your written comments and suggestions. Copytight 1997 Society o Automotive Engineers, Inc. All rights resewed. QUESTIONS REGARD

7、ING THIS DOCUMENT: (412) 72-8510 FAX (412) 6-0243 TO PLACE A DOCUMENT ORDER: (412) 776-4970 FAX (412) 176-0790 Printed in U.S.A. COPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling ServicesSTD-SAE AS 7112/2-ENGL 1997 m 7743725 0559333 184 SAE AS71 la2 3

8、. 3.1 3.2 3.3 4. 4.1 4.2 4.3 4.4 WORK INSTRUCTIONS: There shall be properly identified and referenced work instructions for the manufacture of the product(s). Work instructions shall be available at the point of use. Equipment to be used shall be defined. RAW MATERIAL: There shall be a clearly ident

9、ified and referenced procurement specification. The procurement specification shall provide for lot identification. Applicable handling and storage requirements shall be followed. Purchase order requirements shall be defined for certification by the raw material supplier as applicable. a. Chemical/p

10、hysical properties b. Heat lot C. Surface treatment d. Is a copy of certification or other traceability identification attached to or maintained with material throughout its processing to preclude commingling and maintain lot traca bility -2- COPYRIGHT SAE International (Society of Automotive Engine

11、ers, Inc)Licensed by Information Handling ServicesSTD*SAE AS 7212/2-ENGL 1997 D 7943725 0559334 010 SA AS71 1212 5. 5.1 5.2 5.3 5.4 FABRICATION OF MEMBEMUBE ATTACHMENT: The manufacturer shall have controlled design/machining standard) for attachment to each type and size member including: a. PTFE/El

12、astomeric Hose 1) Nipple/lnsert 2) SocketlClamp b. Metal (Convoluted) Hose 1) Adapter (Liner, Braid) 2) Socket c. Tube 1) Joint (WeldlBraze) 2) Joint (Mechanical)/Machining The designmachining standard shall be traceable to the “as qualified“ assembly. If to detail industry/customer standard or lice

13、nse, the desigdmachining standard shall be traceable to the source design. There shall be documented procedures for machining/forming (rolling, flaring, beading, linear or axial swaging, welding, etc.). Procedures shall address: a. Sequence of operations b. Tooling c. Lubricant(s)/Coolant(s) d. Clea

14、ning for joining (EPA compliance) Inspection criteria shall be established. -3- COPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling ServicesSTD-SAE AS 7112/2-ENGL 1777 7743725 0557335 T57 SAE AS71 1212 6. 6.1 6.2 6.3 6.4 6.5 FABRICATION OF CONFIGURATION

15、: Fabrication of “configuration“ between attachment and connection. This portion of the fitting may be “non existent“ (typical straight fitting) machined from same stock as attachment and/or connection or a rigid tube, straight, or bent including compound bends. It may also include other shapes inte

16、grally machined or welded/brazed/mechanically attached. There shall be documented procedures for forming (bending, sizing, flaring, beading) and/or machining for: a. Sequence of operations b. Tooling c. Lubricant(s)/Coolant(s) d. e. f. 9. h. I. j. Cleaning for joining (EPA compliance) Joining (weld,

17、 braze, mechanical) to attachment (5) and/or connection (7 or 8). Inspection (in-process) Heat treat - see heat treat checklist Cleaning and/or finish (EPA compliance) Final Inspection Packaging/Stocking, as required NOTE: g, h, i and j may be accomplished on finished parts(s). The manufacturer have

18、 shall have written instructions for all thread forming operations. Written instructions shall designate the tooling to be used. Inspection gaging shall be listed. The inspection interval shall be listed. 6.5.1 Dimensional evaluations shall be performed on the first piece and at established interval

19、s. -4- COPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling ServicesSTD-SAE AS 7LL2/2-ENGL 1997 = 7943725 055433b 773 m SA AS71 1212 6.6 6.7 6.8 6.9 6.10 6.1 1 6.12 6.13 6.14 6.14.1 6.14.2 6.14.3 6.14.4 6.14.5 6.14.6 The inspection gaging instructions sh

20、all be adequate. The heating method shall be included in instructions when hot forming. There shall be a method of controlling heating temperature. When heat is required, instructions shall list maximum temperature permitted for each material. Metallurgical evaluation performed on the first piece an

21、d at established intervals. Records shall reflect metallurgical and dimensional evaluations. Procedures for controlling the manufacturing operations and lab analysis on heated formed parts for metallurgical and dimensional control shall be formalized and approved. Work instructions shall specify the

22、 Thread Series in fabrication. UNJFNNF Thread Series: Variable thread gages shall be used to measure the pitch and functional diameters. The minor diameter shall be measured. For external threads, the major diameter shall be measured. lhe root radius shall be measured (external threads/UNJF series).

23、 For safety critical threads, the following measurements shall be taken: a. Flank b. Lead (including helix variation) c. d. Circularity e. Taper f. Runout g. Surface finish FunctionaVpitch differential in lieu of ANPT requirements For coated/plated threads, the pre-plated thread pitch diameter shall

24、 be within the allowable limits as defined in para 3.4.7 of MIL-S-8879. -S- COPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling ServicesSTD.SAE AS iLLZ/Z-ENGL 1997 m 7943725 0559337 82T m SA AS71 1212 6.14.7 6.14.8 6.15 6.15.1 6.15.2 7. 7.1 7.2 7.3 7.4

25、7.5 For coated/plated threads, the pitch/functional diameters shall be within tolerance after coating/plating. If SPC is required on threads, there shall be evidence of data on thread key characteristics. ANPT Thread Series: Li, L2, and L3 ring/plug gages shall be used to verify pipe thread conforma

26、nce. The finish of the threads shall be verified to be smooth and free from flaws, blow holes, and abrupt terminations. FABRICATION OF SYSTEM CONNECTION: This section applies to the fabrication of system connection end(s) other than threads. The manufacturer shall have controlled design/fabrication

27、standard) for connection type( (flare, flareless, beam seal, O-ring, etc.) and size(s). The design/fabrication standard shall be traceable to the “as qualified“ configuration (may be by similarity/analysis). The designfiabrication standard shall be traceable to the industqdcompany standard or “mates

28、 with“ standard. There shall be documented procedures for fabrication that address the following: a. Sequence of operations b. Tooling c. Lubricant(s)/Coolant(s) d. Inspection criteria shall be established. Cleaning for joining (EPA compliance) -6- COPYRIGHT SAE International (Society of Automotive

29、Engineers, Inc)Licensed by Information Handling ServicesSTD-SAE AS 7112/2-ENGL 1777 79Li3725 0557338 7bb SA AS71 1212 8. 8.1 8.2 8.3 9. 9.1 9.2 TEST AND INSPECTION EQUIPMENT: Test and inspection equipment shall be defined for the specific job and this information shall be available at the point of u

30、se. Test and inspection equipment shall be on a verifiable calibration schedule. Test and inspection equipment shall be calibrated. COMPLIANCE: Job Audits: Compliance to the requirements contained herein and customer requirements shall be verified by auditing in-process or completed jobs. The number

31、 of jobs to be audited shall be determined by the NADCAP Fluid System Components Task Group. A minimum of one complete job shall be reviewed for compliance to all customer requirements and the requirements contained herein. If multiple job audits are performed, selections of jobs should be based on

32、representative sampling of type of work, products, and customers. Product Verification: A minimum of one complete Product Verification shall be performed. The part shall be inspected for conformance to specifications and customer requirements. Inspection shall take place at the point in the process where the characteristic or feature is created. -7- COPYRIGHT SAE International (Society of Automotive Engineers, Inc)Licensed by Information Handling Services