Questions related to the Thermal intercepts LHCACFTS518-0
Q1. To confirm this assembly must meet the specifications listed in EDMS 2101922.
Q2. Is there the possibility to substitute the EN 1.4435 for EN 1.4429 or optionally copper alloy (ex. UNS C18000).
Q3. Three different washer brands/types (Growermetal conical washer, Schnorr VS bronze washer, and Hieco-lock 254smo) are specified for connections that appear similar. Is there a reason one is preferred over another in a particular joint? Can we use the same washer in all thermal intercept joints? Note we have already sourced Heico-lock washers for the tuner.
Supplier Questions.
Q4. Who is your supplier of Ag plated A4 hardware?
Q5. Who is your suppler of copper braid?
(Cavity Support package) Blade Support Assy LHCACFAH0100 – Is there an existing procedure or best practice document to complete these welds while maintaining the cleanliness of the bellows to prevent re-cleaning?
(Cavity Support package) Blade Support Axle LHCACFVT0206 – The drawing specifies A4 material which is assumed to be machined out of a purchased M20 threaded rod but with a 1mm pitch, it wouldn’t be possible to have a 2mm wide weld prep. If this is to be machined out of 316L, are there any mechanical requirements to confirm when purchasing material? In case the component does fall into the category ‘non-critical applications’, to be confirmed by Teddy, the EDMS 2632333 applies.
(EDMS 2706475) “Non-Standard” Weld Joint Qualification – Section 2.4 states 2 samples per qualification are required but Section 11.4, page 12 shows 1 sample submitted for qualifications 1, 2 and 4, and 3 samples submitted for qualification 3 (orbital weld). What is the requirement?
316LN material procurement as it’s our biggest hold point.
