Head Office & Manufacturing UK Bulgaria - esf-springs.com · – Head Office & Manufacturing – UK...

Working Wonders With Wire Since 1790 1

– Head Office & Manufacturing

– UK

Manufacturing Facility

– Bulgaria


What is Passivation?

• Passivation is the chemical process applied to

corrosion resistant steels that have been machined or

ground in order to remove potential iron

contaminates from the surface, thus preventing the

possibility of corrosion resistant steels going rusty.

• In simple terms – making sure machined or

ground stainless is still stainless.


Why Is A Spring Maker Talking About

Passivation ?

• Aerospace is a key industry for us.

• Our subcontractor for passivation closed down.

• The business model fitted with our strategy to bring

subcontract work in house.

• Industries served: • Aerospace

• Medical

• Military

• Electronics

• Nuclear

• Commercial


Types of Stainless that we Passivate Since October 2012

• Austenitic.

• Ferritic.

• Free Machining.

• Martensitic.

• Precipitation Hardened.

Specifications we work to:

• AMS 2700 (type 2) – QQ-P-35 – Honeywell NGPS 61 – ASTM A967 – DEF

STAN 03-2 – customer specific

Accreditation: NADCAP and AS9100 REV C


The Passivation Process

• Clean the parts using a 4 stage automated ultrasonic cleaner.

– An aqueous degreaser is added.

• Passivation is done with a Nitric Acid (20% - 25%) and Sodium Dichromate

Solution (2% - 3%).

– The processing unit operates with the parts in a static tank and the solutions are

transferred. This was the first of its kind in Europe.

• Optional second treatment of Sodium Dichromate. (Helps create Chromic oxide

layer on the surface)

• An effectiveness test is done with a Copper Sulphate Solution or 24 hour

high humidity test.

7

Examples of Parts We Process


Ultrasonic Cleaning, Degreasing, Kitting

and Hose Cleaning Services. AC Service (South West) Ltd

30 years experience in the ultrasonic cleaning field, in the

aerospace, nuclear, electronic, medical and commercial industries.

Ultrasonic cleaning, Kitting, Degreasing and Hose Cleaning

Services

We offer precision cleaning processes for parts, assemblies and

components, for use in oxygen, hydraulic and other critical

applications. All processes are carried out in a certified class

10,000 clean room (Fed Stan 209E). We also undertake general

cleaning where the parts, assemblies and components are for

universal applications.


Bespoke modular cleanroom of hard wall design:

• ISO 14644-1 Class 7 –Max 2930 particles ≥5 µm / m3 of air (FED STD 209E – 10,000)

• Overall Footprint: 77.6m² (8.6m x 9m x 2.425m).

• External change area: 4.5m² (3m x 1.5m)

• 123 air changes per hour at an air speed of 0.45m/s in the main area

• 91 air changes per hour at an air speed of 0.36m/s in the change area

• 19 variable speed controlled HEPA ceiling fan filters

• 4 remote variable speed controllers for economic zone control of 2 zones


Ultrasonic Solvent and Aqueous Cleaning including LOX, Oxygen and Hydraulic Components Cleaning.

We are specialists who work to industrial and government specifications or to custom procedures for

customers with special requirements.

A contaminated component/assembly in a system could result in a chemical

reaction, an explosion and/or a total system or device failure - so cleaning is an

essential operation.

Solvent cleaning is used predominantly for metallics and we can cater for most of the solvents on the

market. We can vapour clean and ultrasonic clean in the solvent or a combination of both.

Aqueous cleaning is used predominantly for non-metallics such as rubbers or plastics or a combination of

these with metal eg a hose.

Degreasing of parts and components can be undertaken using a variety of ultrasonic and non-ultrasonic

methods.

Inspection techniques we use include visual, ultraviolet, microscope, endoscope and probe light.


The presence of contamination can cause ignition by mechanisms such as

particle impact, mechanical or pneumatic impact, or spontaneous ignition.

Particularly within oxygen components and systems,

What is a Contaminant

Contaminant Consequence

Oils and Greases Spontaneous Combustion

Metallic Particles Can be accelerated to sonic velocities in

areas of high pressure and flow and lead

to impact ignition.

Debris collection in stagnant area of a unit

can be ignited by pneumatic shock or

adiabatic compression.

Non-Metallic Particles e.g fibres

Corrosion Products

Non-Oxygen Compatible Adhesives Spontaneous Combustion

Non-Oxygen Compatible Lubricants


900 micron particle of paint.


• Inconel

• Stainless Steels

• Carbon Steels

• Copper and Copper alloys

• Aluminium & Aluminium alloys

• Nickel and Nickel Alloys

• Titanium and Titanium Alloys

• Plated or Anodised

• Ceramics

• Plastics e.g. PEEK, PTFE, ABS

• Rubbers e.g. Polysulfide, EPDM

- or in any combination

Materials we process for cleaning:

-


Quality:

-

MTS PRO 597

ARP 1176

WHPS 196

PS 1004

ASTM G93

NGPS 151

R10-6065

NGPS256

BS F69

Customer care is very important to the company and our quality control system has been developed to ensure that our Clients are

provided with the best possible service and product at all times. The company is BS EN ISO 9001:2008 approved.

Specifications include:

Def Stan 02-341 (NES 341) Def Stan 02-372 Part 2

Approvals include:

Honeywell Aerospace, Meggitt Aerospace, Eaton Aerospace, Augusta Westland


2015

New UK Facility 5800m2

Working Wonders With Wire Since 1790

Springs

23


Over Moulding

Working Wonders With Wire Since 1790

Key Personnel:

M.I.A. Hughes Managing Director D. Lackey European sales Manager

E.P. Burgon Engineering Director B. Cox General Manager, Bulgaria

J. Fitch Executive Director of Production L. Russev Quality Manager, Bulgaria

D. Jack Sales Manager E. Popova Administration, Bulgaria

D. Brigg Quality Manager A. Thornton Production Manager, Bulgaria

C. Chick Accounts Manager

P. Korzilius Bus. Dev. Key Accounts

R. Mitchell Wire sales

Enquiries:

Springs, Dean Jack, e: [email protected] t: +44 1963 36 33 77 f: +44 1963 36 36 40

Wire forms, Dean Jack, e: [email protected] t: +44 1963 36 33 77

Wire stocks, Rhoda Mitchell, e: [email protected] t: +44 1963 36 33 77

PCB Terminals, Dean Jack, e: [email protected] t: +44 1963 36 33 77

Piano strings, Tracy, Hendy e: [email protected] t: +44 1963 36 33 77

William Hughes Bulgaria Ltd, e: [email protected] t: +359 3263 7007 f: +359 3263 7006

European Business, Damian Lackey, e: [email protected] t: +49 17610 350 699

Key Personnel and Contacts

27

mailto:[email protected]








Head Office & Manufacturing UK Bulgaria - esf-springs.com · – Head Office & Manufacturing – UK...

Documents

Transcript of Head Office & Manufacturing UK Bulgaria - esf-springs.com · – Head Office & Manufacturing – UK...