Precision Micro offers a range of in-house and subcontract forming and finishing technologies which complement photo etching, enabling customers to reduce their supplier base.
We offer manual and semi-automatic precision forming using standard, modular and custom form tools. Where possible, bend lines can be incorporated into photo etched components, removing the need for hard form tooling.
In-house spot welding is available for components which require a permanent connection, such as nickel silver screening cans.
General forming tolerances
|Metal thickness||Positional||Angular||Internal radii|
|Soft metals up to 25mm||±0.1mm||±1º||0.5 x material thickness|
|Soft metals 25mm to 100mm||±0.2mm||±2º||0.5 x material thickness|
|Soft metals 100mm >||±0.2mm||±3º||0.5 x material thickness|
|Half-hard metals up to 25mm||±0.1mm||±1º||1.0 x material thickness|
|Half-hard metals 25mm to 100mm||±0.2mm||±2º||1.0 x material thickness|
|Half-hard metals 100mm >||±0.2mm||±3º||1.0 x material thickness|
|Full-hard metals up to 25mm||±0.1mm||±1º||2.0 x material thickness|
|Full-hard metals 25mm to 100mm||±0.2mm||±2º||2.0 x material thickness|
|Full-hard metals 100mm >||±0.2mm||±3º||2.0 x material thickness|
Electropolishing and passivation
Precision Micro offers two post-etching corrosion protection processes:
Passivation purifies the component surface and forms a micro-coating of metal oxide to protect it from corrosion.
Electropolishing produces a brighter, smoother surface finish, reducing surface roughness by up to 50%.
For components which require increased surface hardness, temperature resistance, ductility or strength, we offer heat treatment by way of hardening, tempering, annealing and normalising.
Materials can be specified with a non-reflective, dull, satin, bright, mirrored or grit finish to improve component appearance form or function.
Available post-process surface finishes include:
- Vapour blasting
- Chemical blacking
- Chromium nitride
Bonding and brazing
Brazing and diffusion bonding is available for heat exchanger, cooling and fuel cell plates.