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Interbedded inverse die material, and preparation method

A technology of inverting and raw materials, which is applied in the field of precious metals, can solve the problems of high production cost, easy deformation of inlaid products, easy loosening and falling of diamonds and other accessories, and achieve the effect of increasing surface brightness and reducing production costs

Active Publication Date: 2007-02-21
SHENZHEN GMOND JEWELRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Vickers hardness of the alloy is relatively low, causing platinum 950 to be easily deformed when inlaid with products, and the inlaid products are not firm so that jewelry such as diamonds are easy to loosen and fall off. Moreover, due to the low hardness, the surface brightness of platinum 950 is not good. In order to pursue good surface brightness, it is necessary to It takes a long time to polish and needs electroplating, resulting in high production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A mosaic inverted mold raw material, its weight percentage is: platinum accounts for 94.9%, ruthenium powder accounts for 5.1%.

Embodiment 2

[0026] A mosaic inverted mold raw material, its weight percentage is: platinum accounts for 96%, ruthenium powder accounts for 4%.

Embodiment 3

[0028] A mosaic inverted mold raw material, its weight percentage is: platinum accounts for 95%, ruthenium powder accounts for 5%.

[0029] (4) Embodiment 4

[0030] A method for preparing an inlaid inverted mold raw material, the method comprising:

[0031] Step 401, taking 95.1% platinum and 4.9% ruthenium powder by weight;

[0032] Step 402, taking a part of the platinum and pressing it into a thin sheet;

[0033] Step 403, wrapping the ruthenium powder with the pressed sheet;

[0034] Step 404, melt the prepared platinum and ruthenium powder at a melting point of about 1795° C. to form a platinum-ruthenium alloy, which is the raw material for inlaying the mold.

[0035] The purpose of the invention has been achieved so far. On the basis of the platinum inlay process, the method also includes:

[0036] Step 405: Use optical fiber spectrometer and other instruments to detect the alloy. If the platinum content of the alloy is more than 95%, it is considered qualified. Aft...

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PUM

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Abstract

This invention discloses embedded reversal mold raw material and its preparation method. The embedded reversal mold raw material comprises: Pt 94.9-96 wt. % and Ru powder 4-5.1 wt. %. The method comprises: (1) preparing Pt and Ru powder according to the formula; (2) pressing part of Pt into sheets; (3) coating Ru powder with Pt sheets; (4) smelting to obtain embedded reversal mold raw material. The obtained embedded reversal mold raw material has a melting point of 1795 deg.C and a Vickers hardness of 130, thus Pt 950 is not easy to deform and tight embedding can be realized. The embedded product has high surface brightness, and does not need long-time grinding or electroplating.

Description

technical field [0001] The invention relates to the technical field of precious metals, in particular to a mosaic inverted mold raw material and a preparation method thereof. Background technique [0002] Currently on the market, the raw material formula of platinum inlaid molds is generally an alloy of two elements, platinum and palladium. The weight percentage is 95% platinum and 5% palladium. When the melting temperature is 1765°C, the Vickers hardness of the alloy is 60. The Vickers hardness of the alloy is relatively low, which causes platinum 950 to be easily deformed when inlaid with products, and the inlaid products are not firm so that diamonds and other jewelry are easy to loosen and fall off. Moreover, due to the low hardness, the surface brightness of platinum 950 is not good. In order to pursue good surface brightness, it is necessary to It takes a long time to polish and requires electroplating, resulting in high production costs. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C22C5/04C22C1/02B22D21/00C25D3/00B44C1/26
Inventor 陈亿斌
Owner SHENZHEN GMOND JEWELRY
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