Ancillary Processes
The primary reasons Irya Fasteners does corrosion platings, coatings, and finishes for its fasteners are:
- To improve the appearance of the fastener
- To fight corrosion
- To reduce friction
- To reduce scatter in the amount of preload achieved for a given torque
There are a variety of coatings and platings that are used by Irya Fasteners. Some of them are:
Type of Finish Treatment |
Fastener Material |
Type of Finish Treatment |
Fastener Material |
Zinc (electroplated) |
Steel |
Chromium (electroplated) |
Most metals |
Zinc (hot-dip Galvanizing) |
Steel |
Copper
(electroplated)
|
Most metals |
Zinc
(mechanically deposited)
|
Steel |
Copper, Brass, bronze, miscellaneous |
Most metals |
Anodizing |
Aluminum |
Dichromate |
Zinc and
Cadmium plated
parts
|
Zinc(electroplated) |
Steel |
Chromium(electroplated) |
Most metals |
Black oxide,
blued
|
Steel |
Lacquering (clear or color matched) |
All metals |
Black
Chromate
|
Zinc-plated or
Cadmium-plated
Steel
|
Lead-tin |
Steel |
Blueing |
Steel |
Nickel (bright) |
Most metals |
Brass
(electroplated,
Lacquered)
|
Steel |
Nickel (dull) |
Most metals |
Bronze
(electroplated,
Lacquered)
|
Steel |
Passivating |
Stainless steel |
Cadmium
(electroplated)
|
Steel |
Phosphate
(color coating)
|
Steel |
Chromate(clear) |
Zinc and Cadmium plated parts |
Phosphate(zinc or Manganese) |
Steel |
Chromate(colour) |
Zinc and Cadmium plated parts |
Rust inhibitors |
Steel |
Silver(electroplated) |
All metals |
Tin(electroplated) |
Most metals |
Hot-dip aluminum |
Steel |
Tin (hot-dip) |
All metals |
Heat Treatment
Irya Fasteners does Heat Treatment which is the controlled heating and cooling of metals to alter their physical and mechanical properties without changing the product shape. Heat Treatment is often associated with increasing the strength of material, but it can also be used to alter certain manufacturability objectives such as improve machining, improve formability, restore ductility after a cold working operation. Thus it is a very enabling manufacturing process that can not only help other manufacturing process, but can also improve product performance by increasing strength or other desirable characteristics. Some of the common methods are,
- Quenching and tempering
- Thru Hardening
- Normalising
- Solution Annealling
- Nitriding
- Precipitation Hardening
- Case Hardening