|
|
|
|
| Our
material: Solid Tungsten Carbide Composits (STCC) |
|
| Beside the geometry
the material and - especially - the perfect finish of the surface is
the key for the cutting results and the lifetime of a blade. Perfectly
smooth surfaces cannot be ground onto cheap coarse material. Therefore
all blades an almost all other tools of the GIS product range are made
from solid sub-micrograin tungsten carbide composits. Exceptions are
only made where it is unavoidable e.g. ROLAND blades as they have to
be held by a magnet. But in those cases we produce at least the
cutting edge from STCC as well. |
|
Carbide?
Everybody talks of "carbide" as the material for tools what is -
exactly speaking - false. "Carbide", more exactly tungsten carbide is
the major component of a group of materials that in German is called "hard
metal". "Hard metal" is a totally artificial product made from
various extremely fine milled powders such as Cobalt (Co) and a couple of
"hard" components such as tungsten carbide (WC) that have been
sintered into the desired shape by applying high pressure and temperature. Hard
metal ("carbide") has nothing to do with steel or similar products; it
does not contain any iron. It has not to be especially hardened like tool
steel. It is extremely hard by nature but also a little brittle and
fragile. "Carbide" behaves similar to porcelain: Whilst one can work
with a "carbide" tool under good conditions for several weeks with
almost no wear, one clumsy touch of the tool can be enough to break the tip.
Therefore, take
care: Store and ship tools
always in suitable single packing. Don't let your tools drop. Maintain the
tools - if possible - on a wooden table or similar. Never touch the tip of a
"carbide" tool, or if unavoidable, do not touch it with a hard object.
E.g. use your fingernail to push a blade into the holder. Especially do not
apply any force sideward to the tip of a blade. |
|
|
|
 Coarse
"carbide":
Coarse grains lead to a rough surface and to high friction forces between
the tool and the material. Consequence: Material will be tugged
instead of cut. Also the coarse components at the tip of the structure
have the tendency to chip. Consequence: Excessive wear. |
|
 Fine
"carbide":
The fine grain structure allows smoother surfaces and superior cutting
capabilities. The smaller grains grant a better compound than those of
coarse structure. Results: Smooth cuts, significant higher tools
lifetime. |
|
|
A table with the characteristics of the
most important "carbide" grades you can find at "ROUTING
BITS /
INFO"
|
|
|
|
|
GIS
Gienger Industrie-Service
• Segantinistr. 5 • CH
- 8049 Zurich • Tel. /
Fax +41-(0)44-341 5028 •
mail: info@gis-tec.com
Warehouse EC •
Weimarstr. 15 • D -
78532 Tuttlingen • Tel.
+49-(0)7461-162020 • Fax
162021 |
|
|
