|
For formulation advice or other datasheets
click here
| |
Semi-synthetic fluids are products containing oil emulsified at a level
typically from 5-50%. Above 50% the products would normally considered to be
milky soluble oils.
1) Boron-Amine products
Boron-amine based products are the industry standard for semi-synthetics
offering low cost and high corrosion inhibition.
They are available in a myriad of forms:-
 | Secondary amine-free |
| Triazine-free |
| Chlorine-free |
| Low oil |
| High oil |
They have to be designed for
| Different water hardness's, |
| Different metals low staining for aluminium, yellow metals, cast iron,
steel, etc. |
| Different machining processes |
| Different pressures and flows |
| How dirty systems are |
| Ease of use |
2) Boron-free
Boron-free lubricants are desired, but there is limited technology in
semi-synthetics to make this work. There are a few chemistries which are
available on the market:-
| DCHA - dicyclohexylamine is used by some suppliers, it is a very
effective as a biostable additive. |
| Lactic acid - can give bio-stability but corrosion inhibition isn't as
good as boron so careful formulation required. |
| phenoxy ethanol or phenoxy propanol - can be effective in
semi-synthetics but works better in higher oil products. |
3) Hazard label-free
These products can be based on a range of technologies but are formulated
to not require hazard labelling. They are not necessarily less irritating as
they are not specifically free of any particular additives. It is important to
ask the supplier questions about the technology used.
4) Service
Service has become the most important issue with water-mix metal working
fluids.
Castrol
is a leader in synthetic water-mix fluid technology, but has the disadvantage
of high cost and large minimum order size. For technology without the expense
there are a few independents which can offer products like
QSCD Ltd
| |
|
