Chemical milling process description

Aluminium milling

Nu-Pro is currently approved by BAe and Aircelle for aluminium etch.

The chemical milling is based on the BAe Systems specification. As BAe represent approximately 75% of the UK market for chemical milling we believe this to be the industry standard.  Nu-Pro is also approved by Aircelle to use this specification.

  The tanks are 10,500L 4.5m long by 1.25m wide and 1.8 m deep.

We have three tanks etch, rinse and de-smut.

  

 

 

 

 

 

   The de-smut is in the fore ground, rinse in the middle with etch at the end

 

 

 

 

 

 

 

Dry back spray booth for masking                                    The drying room

application by hot airless spray.

 

The process is:

 •  Clean by degrease  •  Flash etch to aid maskant adhesion  •   Mask by hot airless spray

 using AC products 850   •  Aero-D-Tan to data card BS CM 001  •  Dry •  Scribe  •  Etch

 •  Rinse by tank and spray  •  De-smut using de-oxidiser 7/17   •  Rinse by tank and spray

 •  Blow dry

Other milling

 Nu-Pro also process titanium to Rolls-Royce and BAe approvals; and stainless steel and nickel to Rolls Royce approvals

 The tanks for these are 5.5 feet cubed

 

 

 

 

 

 

This process is:

 •  Clean by degrease  •  Blast  • Dip masking using AC products 850 Aero-M  •  Dry

 •  Scribe  •  Pre-etch  •  Etch in 20 minute cycles  •  Rinse  •De-smut using de-oxidiser 7/17.

 •  Rinse  • Blow dry

 

The division is headed up by Peter Windle who is happy to deal with any enquiries on 01453 733524