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Coating
TEMC has developed a series of refractory coatings
in order to minimize the finishing operation and produce a casting
with a better appearance with a lower defect rate.
TEMC's coatings reduce metal penetration and prevent
the formation of "burn on". We know that some degree of
penetration and "burn on" can not be prevented, and will
need additional finshing operation, and in the worst cast resulting
in scrapped castings.
TEMC's refractory coatings are available in powder
and paste, which need to be mixed with alcohol or water when required.
Various types have been formulated for different methods of application;
such as bushing, flowing, spraying and dipping.
TEMC's refractory coatings have also been designed
for differrent metal castings (i.e. alloy steels, high manganese
steel, grey iron, ductile iron, etc.). Refractory coatings have
also been formulated for different mold making processes (i.e. CO2
mold, furan mold, hot box, cold box).
TEMC can supply different coatings to satisfy individual
needs.
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Sleeves
All material and most alloys during solidification from liquid
phase to solid, a contraction occurred, foundrymen have to compensate
the shrinkage by supplying liquid metal from dam properly connecting
with casting in order to produce sound casting. The metal at the
dam must be last part of solidification of casting. For many years,
TEMC has researched the knowledge of feeding, and
has developed produts nad processes to create most efficient in
use minimun volume of feeding head. Exothermic material provide
additional heat,and insulting matrials reduce heat loss and exothermic
plus insulting materials combine two major functions to get best
effect. TEMC, in order to save great energy and
reduce shrinkage defect, is supplying foundry industry full range
of feeding aids.
TEMC's range of foundry chemicals is cpmprehensive,
varied shape of riser sleeve is available, such as cylinder, open
blind and oval, special shape requesed by customer is welcome, smallest
50 mm to 500 mm, flexible boards suotable for large riser, TEMC's
feeding adis are available for production of all kind of steel,
iron, copper and aluminum alloys.
Fluxes
TEMC has designed a series of products for non-ferrous
metal treatment.
These products are:
1. Degassing fluxes offering the following advantages....
a. Much less smoke.
b. Nontoxic.
c. Efficient removal of gas from molten metal.
2. Coveting fluxes for preventing oxidation, minimizing metal loss
and cleansing metal.
3. Modifying flux for aluminum silicon alloy in order to improve metallgraphic
structure and mechanical properties.
4. Grain refining agent (i.e. aluminum titanium-boron alloy)
5. Chemicals for the elimination of unwanted elements (i.e. magnesium,
calcium in aluminum)
6. Launder design and filtration system.
TEMC can design a better launder system for preventing
turbulence and oxidation during molten metal transportation, while
offering a superior quality of ceramic foam filter ensuring the best
cleanliness of molten metal. |
