SU1039726A1 - Amber working method - Google Patents

Abstract

METHOD FOR TREATING AMBER, including heating in a gaseous environment, holding at a given temperature and subsequent cooling, characterized in that, in order to increase the density, dielectric constant and translucency of amber, heating is carried out in a nitrogen atmosphere at 130-170 ° C and pressure 15-20 kgf / cm, and exposure - for 6-12 hours

Description

And; 5, 6) pertaining to the processing of precious stones, in particular, to the methods of processing amber at the manufacture of jewelery or technical products.

There is a method of processing jewelry, including heating, holding at a given temperature and subsequent cooling 1.,

The disadvantage of this method lies in the fact that it is applicable to the processing of corundum jewelry with a higher physicochemical characteristics of the material compared to the material.

Closest to the proposed technical essence and the achieved result is a method of processing amber, including heating in a gaseous medium, holding at a given temperature and subsequent cooling 2.

However, the known method does not provide the necessary clarification of the opaque, old amber, and also excludes the possibility of determining the end of processing due to the difference in the physicomechanical characteristics of individual amber pieces and the transience P1 of the process of changing the internal pattern, which reduces the density of amber and its artistic value.

The purpose of the invention is to increase the density, dielectric constant of translucency of amber.

This goal is achieved by the fact that according to the method of treating an amber, which includes heating in a gaseous medium, holding at a given temperature and subsequent cooling, heating is carried out in a nitrogen atmosphere at 130-170 ° C and a pressure of 15-20 kgf / cm, and holding within 6-12 hours

This embodiment of the method provides an increase in the density, dielectric constant and translucency of amber by lowering the heating temperature, the presence of an inert gas medium and pressure, eliminating the appearance of internal bubbles and microcracks, as well as reducing the rate of change of the internal pattern.

The drawing shows a device that implements the proposed method of processing amber.

The device contains a container 1, a cylinder 2 with compressed nitrogen, pipeline 3,

connecting container 1 with balloon 2, with pressure gauge 4 and safety valve 5.

Container 1 contains base 6 with heater 7 and thermocouple 8, caps 9

with thermal insulation 10 and plates 11 for placing pieces of amber located around heater 7.

The heater 7 is equipped with a thermostat 12.

The method of processing amber is carried out as follows.

On the plate 11 of the container 1 load pieces amber. Container 1 is sealed and nitrogen gas is supplied under a pressure of 10 kgf / cm. Pipeline 3 overlap and

the heater 7 is turned on until the temperature reaches 150 ° C. When heated in container 1, the pressure increases to 15-20 kgf / cm, which is maintained by the safety valve 5.

After reaching a predetermined temperature and pressure, holding is carried out for 6-12 hours, followed by natural cooling and pressure reduction.

Lid 9 reduce and remove the processed pieces of amber.

The density and hardness of amber increases by 20–40%, its translucency and dielectric constant increase. Processing modes and physicomechanical characteristics of amber are given in the table showing the presence of a positive effect from the use of the proposed method for processing amber.

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Claims (1)

METHOD FOR PROCESSING AMBER, including heating in a gaseous medium, holding at a given temperature and subsequent cooling, characterized in that, in order to increase the density, dielectric constant and opacity of amber, the heating is carried out in a nitrogen medium at 130-170 ° C and a pressure of 15-20 kgf / cm ² , and the shutter speed is within 6-12 hours