Instruction

Preparation of the objects to be disposed

To start it is necessary to degrease and clean the pieces to be enamelled carefully, then check that there are no residues of greasy substances that can then decrease the adhesion of the enamel. For the work you can use various types of degreasers: alcohol, Nitro diluent, degreasers and normal detergents.
When making the last cleaning with ultrasonic washing machines, it is advisable to check that there are no surfactants or brighteners in the water: they release a coating on the piece to increase the brightness of the piece, thus forming a surface film on which the coating will the polish. If this were the enamel, it will not adhere to the piece and failing to penetrate into the microporosity of the piece will not have the desired adhesion.

Processing steps

– Mix the product well;

– Take a container (also in plastic), put the enamel and catalyst in proportion and mix well;

– Choose the size of the needle to be used and apply it to the syringe;

– Pour the mixture of enamel and catalyst, properly mixed, into the syringe;

– Attach the syringe to the appropriate attachment of the enamel proportioner;

– Adjust the working pressure (see enamel dosage instructions);

– Start the work by distributing the enamel at the selected points;

– For the processing of the enamel to be polished, it is advisable to bring, if the material allows it, the piece at a temperature of about 40/70 ° C, to eliminate any air bubbles created during processing (for flat work) the bench heating plate is available);

– Once the application is finished, put the pieces in the oven at a maximum temperature of 80/90 ° C (if air bubbles have appeared, it is advisable to burn the pieces before inserting them in the oven).

 

Catalysis of NH 203 or KZ 703 enamel
with E411 and / or NH 411/2172 catalysts

Catalysis ratio: 40 out of 100 (on the label you will find it written: CATALIZATE TO 40% WITH E 411 or NH 411/2172) i (N.B. respect precisely the enamel-catalyst ratio by weight not in volume!)

For the “enamelling on the level“, that is when you have to glaze surfaces that have a “seat” (recess) to hold the enamel, you must use the catalyst E 411 which makes the glaze liquid and self-leveling.
In this case it is recommended to heat the piece before decoration, for example by placing the piece on a heating plate or by first placing it in the oven at a temperature of 40-60 ° C.

 

CDoing so speeds up the application and limits the formation of possible air bubbles to the maximum. As soon as the enamel touches, the piece will automatically spread all over the enamelled seat.

Once the deposition of the enamel “flamed the piece” is finished, that is to say, quickly pass an oxidizing flame directly onto the surface of the enamel placed on the object to eliminate any small bubbles present on the surface.

For the “round enamelling” (enamelling on three-dimensional objects) the catalyst nh 411/2172 tixotropic should be used which causes a more viscous enamel-catalyst mixture to be obtained which will remain firmer in the position in which it will be placed. Apply the enamel thus catalyzed on the piece by means of rapid circular movements to obtain the desired enamelling and a uniform smooth surface.

Once the deposition of the enamel “flamed the piece” is finished, that is to say, quickly pass an oxidizing flame directly onto the surface of the enamel placed on the object to eliminate any small bubbles present on the surface.

Although the product is more viscous if the three-dimensional piece is covered completely, the enamel would tend to cast due to the force of gravity, therefore it is necessary to dry it in rotation.

It is possible to catalyze the enamel with a mixture of the two catalysts E411 + NH 411/2172 in different proportions maintaining the correct ratio of catalysis.

 

Example 1:  10gr.NH 203 NEUTRAL TRANSPARENT +2 gr. E411 CATALYZER FOR FLOORS + 2gr. NH411 / 2172 TIXOTROPIC CATALYST.

Example 2: 10gr.NH 203 NEUTRAL TRANSPARENT +3 gr. E411 CATALYZER FOR PLANTS + 1gr. NH411 / 2172 TIXOTROPIC CATALYST.

Drying

The workability of the enamel is about 60 minutes, therefore it is advisable to catalyze only the amount of product that will be used.
Enamel polymerization takes place at a temperature between 22 ° C and 90 ° C.

Air drying: The pieces decorated with the enamel can be dried in the air; if you want to dry the colored piece with the enamel, you need a condition of ambient temperature of not less than 22 ° C and a humidity rate not too high (just follow the climatic-environmental conditions necessary for the normal performance of the work activities planned for staff).
If this drying procedure is chosen, there is sufficient polymerization after about 24 hours.
However, the resistance of the color to the scratch will increase with the passing of the days until it becomes maximum after about 72 hours. Drying in the oven: in order to accelerate the polymerization process it is possible to obtain the drying of the varnished product with the enamel, placing it in the oven according to the following time / temperature table:

160 min A 50°C
120 min A 70°C
  90 min A 80/90°C

The temperatures correspond to the temperature of the object, therefore it is advisable to check the temperature for each individual case to obtain an adequate polymerization.

Once the complete polymerization of the decoration realized with the enamel has been obtained, it is possible to proceed with any subsequent processing:

Application of transfer sheets for the realization of textures and patterns.
sanding and polishing (after at least 24 hours).