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Meproche Specialty Products
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| Meproche Specialty Products
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(A)
MEPROCHE 401 RUST REMOVERS
Slightly acidic liquid - apply on the rusty surface and leave for 2 to 5 minutes- wipe
out the rust. |
(B) MEPROCHE C-21
Two pack type rust convertor Mix two components (A) and (B) in a ratio of four
to one and apply one the rusted surface. Keep for four to five hours.
Remove loose scales by wire brush. If needed the operation is to be repeated for highly pitted
surfaces. It will convert the rust into protective film. |
(B) MEPROCHE 21 (RUST – CONVERTOR).
MEPROCHE 21 (RUST-COVERTOR) is
based on polyhydroxy organic compounds. It’s mainly desingned to remove
old rusty pitted steel surfaces and converts the most adherent surface
into a protective coating. It also remove surface rust from newly
manufactured steel sections. It is supplied in two pack system.
Method of use:-
Mix 50 gms of part A to 1 kg. Of part B, Apply on the rusted surface and
leave it for 4 to 6 Hrs. Remove rust by wire brush. Repeat the process
if necessary. It will convert the balance rust into a passive state to
stop further rusting. It gives a temporary rust-prevention which can
subsequently painted or lined. If applied on newly manufactured steel
having a very thin rusty surface then there is no need to have wire
brush operations.
MEPROCHE 21 RUST-CONVERTOR is mildly acidic in nature and rubber or
polythene should be used while handling it.
Note :-
The informations given in this bulletin is based on our experience and
tests conducted, where applicable, on typical specimen. However the
actual working conditions are beyong our control and knowledge, hence we
cannot accept any liability for loss, demage, injury or mishap,
resulting from reliance on the informations. |
(C) GOLD STRIPPING SALT
MEPROCHE GS is a formulated compound for electroplating and deplating of
gold and its alloys (Alloys of gold containing nickel, copper, zinc,
etc.)
The electrostripping / electropolishing is done by removing a very thin
layer of metal/alloy. For this purpose you require a machine to supply
10 to 30 Volts DC.
METHOD OF USE :- Dissolve 10 % of Meproche GS Salt in tap water and put
it in the bucket of the machine or in a breaker as the case may be. The
copper/ S.S. hooks of (+) anode should be attached to the items to be
stripped, and cathode (-) can be stainless steel or titanium. The bath
so prepared should be heated upto 50 to 600 C. and should be kept at
that temperature. Now pass the DC current of 10/15 seconds of a voltage
of 20/25V. Remove the articles from anode, rinse and dry – the polishing
is complete. A small amount of agitation is preferred. To sum up the
working conditions are give below :-
T=50/60 degree C, t=10 to 15 sec, V=20/25 Volts.
REPLENISHMENT :- When the stripped surface is dull, add 2 to 3% salt.
RECLAIMING:- The gold/alloy so dissolved can be reclaimed by
electroplating or can be sold to gold electroplates.
EFFLUENT – TREATMENT :- The salt contains cyanide hence it should be
neutralized before discharging.
CAUTION:- The product contains cyanides hence all precautions for
handling cyanides should be taken as per safety sheet for this items,
separately provided.
(D)
Meproche AAR 410 Alkali resisting synthetic cement
(E) Meprolene acid resisting synthetic cement
(F) Meproche HRC High heat resisting cement
Details of above mention products can be given on request
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