DE202018104717U1 - jewelry body - Google Patents

Abstract

A copper-containing platinum alloy article, characterized in that the platinum alloy comprises a portion thereof.

Description

The invention relates to a jewelry body, such as a piece of jewelry, in particular a ring-shaped piece of jewelry, or a part of a piece of jewelry according to the preamble of claim 1 and a jewelry alloy for producing such a jewelry body. The jewelry body is made of a platinum alloy with a share of copper.

Out EP 2 260 116 B1 For example, a platinum jewelery alloy is known which has a platinum content of between 50.0 to 70.0% by weight and a copper content of between 0.5 to 40.0% by weight of silver. The alloy is composed in such a way that it allows in particular the production of semi-finished products in the continuous casting process.

In addition to the known alloys, there is a need on the jewelry market for platinum alloys which, on the one hand, facilitate easier processing, in particular in the production of high-quality platinum jewelery, in particular wedding rings, and on the other hand ensure high resistance to damage or other traces of use.

The object of the invention is therefore to enable a generic jewelry body easier production and also a high hardness of the finished piece of jewelry.

This object is achieved by the jewelry body having the features of claim 1. In this case, the platinum alloy has a proportion of at least 58.0 and preferably up to 60.5 wt .-% platinum, at least 35.0 to preferably 40.0 wt .-% copper and at least 0.06 to preferably 0.26 wt. % Manganese on. Due to the high copper content, the platinum alloy is relatively soft during the production of the piece of jewelry and thus very easy to handle and with a high degree of detail. The additional use of manganese ensures that the piece of jewelry can be provided in particular by additional cold working with a hardness that can reach a degree of hardness of 240 to 260 Vickers, preferably over 250 Vickers.

In a particularly advantageous embodiment, the platinum alloy has a proportion of 59.5 to 62.0 wt .-% platinum, 37.0 to 42.0 copper and 0.1 to 0.3 wt .-% manganese. Within these ranges of values, a particularly suitable ratio between processability of the starting material and degree of hardness of the finished piece of jewelry is achieved.

In the following, an exemplary composition of the jewelery alloy and embodiment of the jewelery body is given:

Example:

60.2 Wt .-% Platinum, 38.6 Wt .-% Copper, 0.12 Wt .-% Manganese.

The heat treatment of a made of the alloy, for example, annular body jewelry with a content of at least 58.0% content of platinum takes place at an annealing temperature of the alloy between 670 and 690 °.

With a ring width of between 52 and 64 mm, a soft hardness of 220 to 230 HV and, after cold deformation of the jewelery ring, a hardness of 240 to 260 HV are achieved.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 2260116 B1 [0002]

Claims (4)

Body made of a copper-containing platinum alloy, characterized in that the platinum alloy accounts for a share of at least 58.0 Wt .-% Platinum, at least 35.0 Wt .-% Copper and at least 0.06 Wt .-% manganese having. Jewelry body after Claim 1 , characterized in that the platinum alloy accounts for a share of 58.0 to 60.5 Wt .-% platinum 35.0 to 40.0 Wt .-% Copper and 0.06 to 0.26 Wt .-% manganese having. Jewelry body after Claim 1 or 2 , characterized in that the platinum alloy accounts for a share of 59.5 to 62.0 Wt .-% platinum 37.0 to 42.0 Wt .-% Copper and 0.1 to 0.3 Wt .-% manganese having. Jewelry alloy for the production of a jewelry body according to one of Claims 1 to 3 ,