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Noble metal alloy smelting method

A precious metal and alloy technology, applied in the field of precious metal alloy smelting, can solve problems such as large loss of precious metal and product quality defects, and achieve the effect of reducing loss and improving the quality of precious metal products

Inactive Publication Date: 2013-01-30
深圳市帕玛精品制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a precious metal alloy smelting method, which aims to solve the problems of large loss of precious metals and many quality defects in the obtained products in the existing precious metal alloy smelting process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Set the temperature of the smelting furnace to 1050°C, start heating in the smelting furnace, and connect argon or helium at the same time; when the temperature in the smelting furnace rises to 900°C, put the precious metal alloy into the crucible in the smelting furnace, and simultaneously Put the stainless steel guide plate into the graphite mold and fix it with a pneumatic clamp, then set the temperature of the cooling water to 80°C; when the temperature in the melting furnace rises to 1000°C, the precious metal alloy has become liquid, and the crucible is magnetically vibrated to make The liquid precious metal alloy rolls slightly in the crucible, so that the liquid precious metal alloy rolls automatically to achieve the effect of stirring; after the temperature in the melting furnace reaches 1050°C, keep the temperature at a constant temperature for 3 minutes, and then open the pneumatic clamp. At this time, the pneumatic clamp has two rollers Clamp the stainless st...

Embodiment 2

[0034] Set the temperature of the smelting furnace to 1070°C, start heating in the smelting furnace, and connect argon or helium at the same time; when the temperature in the smelting furnace rises to 900°C, put the precious metal alloy into the crucible in the smelting furnace, and Put the stainless steel guide plate into the graphite mold and fix it with pneumatic clamps, then set the cooling water temperature to 75°C; when the temperature in the melting furnace rises to 1000°C, the precious metal alloy has become liquid, and the crucible is magnetically vibrated to make The liquid precious metal alloy rolls slightly in the crucible, so that the liquid precious metal alloy rolls automatically to achieve the effect of stirring; after the temperature in the melting furnace reaches 1070°C, keep the temperature at a constant temperature for 5 minutes, and then open the pneumatic clamp. At this time, the pneumatic clamp has two rollers Clamp the stainless steel guide plate and sta...

Embodiment 3

[0037] Set the temperature of the smelting furnace to 1060°C, start heating in the smelting furnace, and connect argon or helium at the same time; when the temperature in the smelting furnace rises to 900°C, put the precious metal alloy into the crucible in the smelting furnace, and simultaneously Put the stainless steel guide plate into the graphite mold and fix it with pneumatic clamps, then set the temperature of the cooling water to 70°C; when the temperature in the melting furnace rises to 1000°C, the precious metal alloy has become liquid, and the crucible is magnetically vibrated to make The liquid precious metal alloy rolls slightly in the crucible, so that the liquid precious metal alloy rolls automatically to achieve the effect of stirring; after the temperature in the melting furnace reaches 1060°C, keep the constant temperature for 4 minutes, and then open the pneumatic clamp, at this time the pneumatic clamp has two rollers Clamp the stainless steel guide plate and...

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PUM

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Abstract

The present invention discloses a noble metal alloy smelting method, which comprises the following steps that: heating is performed inside a smelting furnace, and argon gas or helium gas is concurrently introduced; a noble metal alloy is placed into a crucible in the smelting furnace; the noble metal alloy changes into a liquid state, and the crucible is subjected to magnetic vibration, such that the liquid noble metal alloy is in a rolling state; and after a temperature in the smelting furnace is 1050-1070 DEG C, constant temperature holding is performed for 3-5 minutes, the liquid noble metal alloy is introduced to a lower mold of a mold, the middle-lower position of the lower mold is subjected to circulating cooling by using cooling water, and the liquid noble metal alloy solidifies inside the mold. With the noble metal alloy smelting method provided by the present invention, problems of sand holes, bubbles, impurities, cracking, non-uniform fineness, not high density, not good ductility and the like of the conventional noble metal alloy material after smelting are solved so as to comprehensively improve the noble metal alloy product quality, and loss caused by the smelting technology is only 0.02-0.04% so as to substantially reduce loss.

Description

technical field [0001] The invention relates to the technical field of metal smelting, in particular to a precious metal alloy smelting method. Background technique [0002] With the development of society and the continuous improvement of people's living standards, the demand for jewelry and watches made of precious metals such as gold, platinum, and silver will continue to increase in daily life. In the precious metal manufacturing industry, the quality of precious metal products is an important factor in determining the value of products. Due to the particularity of precious metal materials, to produce high-quality products, the quality requirements for precious metal materials are very high. At the same time, due to the high value and high cost of precious metals, the research and application of smelting technology in the process of precious metal processing is very important to the precious metal manufacturing industry. [0003] The traditional manufacturing process o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C5/00
Inventor 张剑利詹俊
Owner 深圳市帕玛精品制造有限公司