Liquid gold is a general term used to cover a wide variety of decorative compositions of precious metals, which use several percentages of the precious metals; and different proportions between them and the not precious ones to obtain multiple decorative effects. To produce a decorative suitable effect there are two steps of supreme importance: 1: The application of the product to the piece and 2: the firing. Though the firing or burning has been an object of many discussion, a profile or cycle has not been obtained of burned clearly definitely due to the fact that every oven changes substantially. Advisable ranges of temperatures, length of cycle, etc., can be given but every oven needs to be connected to satisfy the necessary requirements of the interior decorator.
The gold film is formed really about them 400ºC and therefore, the ventilation and clean burnt of gold when it approaches this temperature is critical for the final effect. The insufficient ventilation can cause veils, which is essentially an interaction between the products of combustion of the gold/color/resins, etc., and the products of diffusion arising of the piece; the glass is the most capable due to the easy diffusion of the sodium, potassium, etc. To obtain a profile of optimized firing it is necessary to take in all many factors: the loads within the oven, size of piece(s), efficiency of the warming, ventilation and flow, other pieces that are burned simultaneously, etc.
The peak temperature and the time in it need to be sufficiently high to allow that the agents of adhesion should act on the glaze. The gold paints normally is cooked to a temperature approached that of the point of softening of the substratum, but not very much high that can cause marks or distortions. A surface with blisters or drosses of the liquid gold after the firing can be the result of an increased of the temperature of the article too rapidly, together with inadequate ventilation of the oven. If the cooked gold can chipping with rub, this is an indication of a too low firing temperature of or a permanency to the temperature limit too much short.
Visele Color, S.L.
MANUFACTURE & ADMINISTRATION
Partida Planells, s/n
E-46360 - Buñol - Valencia (Spain)
Phone: +(34) 962 50 37 95 - Fax: +(34) 962 50 10 30
info@visele.com
ORDERING & STOREHOUSE
Cami Voltes (Les), s/n nave 2
E-12540 - Villarreal de los Infantes - Villareal
Castellon de la Plana (Spain)
Phone: +(34) 964 52 94 57 - Fax: +(34) 964 52 94 58
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