PROCESS FOR MANUFACTURING CANTILEVER SPRING BLADES FOR aLIGO

Document #:

LIGO-E0900023-v15

Document type:

E - Engineering documents

Abstract:

This process specification is for manufacture of cantilever spring blades for aLIGO. It includes material requirements, limitations on shaping, and details of the age hardening fixture. These springs are for use in an Ultra-High Vacuum (UHV) system.
Sections 2 to 4 highlights all of the required steps if manufacturing from Maraging Steel.
Section 5 is for manufacturing process for Grade 440C Steel (a recent addition to LIGO).

Files in Document:

• E0900023-v15_Manufacturing Process Spec for Cantilever...pdf (535.8 kB)

Other Files:

• E0900023-v15_Manufacturing Process Spec for Cantilever...doc (648.0 kB)
• Maraging Steel Blades flowchart_v4.pptx (40.6 kB)

Topics:

• Basic R&D
• System Engineering

Authors:

• Dennis Coyne
• Calum Torrie

Notes and Changes:

v15 Added a new section (section 5) for v15 that details manufacturing steps if using Grade 440C stainless steel along with Maraging Steel instead of just Maraging Steel (v1-v14).

v14 Calum Torrie. For clarity a flowchart is given in figure 1 outlining the steps involved in the default process and alternative process. Else no changes. 12/21/2018

v13 Note added by Norna 31st May 2018.
The two sentences in section 2.2. which have been in and out of this document (see notes on v11 page ) were removed again in this version.

Related Documents:

Referenced by:

• LIGO-E1300295: SLC & VP Materials and fabrication specification
• LIGO-T1100165-v2: AOS SLC Manifold/Cryopump and Mode Cleaner Tube Baffles FDR
• LIGO-T1000747-v4: Arm Cavity Baffle Final Design (SLC)
• LIGO-E1200686-v2: aLIGO HAM-ISI, "Common Documentation" (List of all DCC trees, wikis, and general documentation)
• LIGO-D071100-v3: Spring
• LIGO-E0900364-v11: Metal components intended for use in the Adv LIGO Vacuum System