



AST Aerospace Surface Treatments division looks after the surface treatments needs of the group of companies within Swan Investments. The division has also developed its own outside customer base, a number of these customers are in fact competitors of our own manufacturing companies.
Delivery times are between 7-10 days; dependent on the complexity of the work and the number of processes the work has to go through.
Surface treatments, work a two shift system, working 24hr x 6 days per week.
Besides surface treatments, the division also carries out NDT and heat treatments operations.
There are three main process lines - Steels - Aluminium - Paint finishes
The extensive equipped division includes, Process tanks for both steels and aluminium lines which at present consist of 92 tanks, the larger tanks are ] 2 ft X 2ft X 6ft high. Added to this are four large spray ovens to cope with the many variety of paint finishes.
A comprehensive process laboratory supports all these processes.
| Non - Destructive Testing | Procective Treatments | Other Processes |
|---|---|---|
| Metal Spraying in Aluminium & Zinc | Paint Spraying | Pickling of Allumium |
| Non-Destructive Testing Dye | Anodising (Chromic) | Pickling of Titanium |
| Fluorescent Penetrant | Anodising (Sulphuric) | Passivation |
| Magnetic Flaw Detection | Magnetic Flaw Detection Alocrom (Converstion Coating) | Vacu-Blasting |
| Heat Treatments | Cadium Plating (under 65 ton f/in2) | Dry Grit Blasting |
| Hardness & Conductivity | Cadium Plating (over 65 ton to 90 ton f/in2) | |
| Anodic Flaw Detection | Cadium Plating (over 90 ton f/in2) | |
| Etch Flaw Detection | Phosphate Coating | |
| Zinc/Aluminium Spraying |
Mr Alan Perry : Manager
Telephone: 01245-350444
Contact by Email >
Mr Adrian Yeo : Chemist
Telephone: 01245-350444
Contact by Email >
Production Control
Telephone: 01245-350444
Contact by Email >
Aerospace Surface Treatments
1-2 Farrow Road,
Chelmsford Industrial Park,
Chelmsford Essex CM1 3TH