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Palladium alloy for yellow jewelry with large-variable capacity and processing process thereof

A kind of processing technology, technology of palladium alloy

Inactive Publication Date: 2018-08-31
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But unfortunately, among the jewelry made of palladium alloy on the market, only the white one has reached the performance of jewelry.
Although it is possible to prepare a layer of colored coatings on the surface of palladium jewelry by ion plating, these coatings generally fall off, fade and corrode after 6 months of use, seriously affecting palladium alloys as jewelry alloys. Further promotion and expansion of market share
[0007] Although my country's jewelry industry has relatively large absolute figures in terms of quantity and output, the scale of enterprises is small and the core competitiveness is not strong.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Palladium alloy for yellow jewelry with large variable capacity and its processing technology. In terms of weight percentage, the composition of the alloy is: Ca:0.3wt.%, Sn:2.4wt.%, Bi:2.2wt.%, Mo:0.4wt.%, C:0.2wt.%, Pd:4.0wt. %, Mn: 1.0wt.%, Zn: 20.0wt.%, and the balance is palladium. The above-mentioned preparation method of palladium alloy for yellow jewelry with large variable capacity and its processing technology includes the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Protected by argon gas to avoid serious burning of alloy elements due to large air flow; heat preservation at 1650 degrees for 10 minutes during smelting, and stir evenly with high-frequency induction furnace; heat preservation at 1650 degrees for 1 minute after stirring evenly and then cast out of the furnace; palladium alloy casting adopts The steel mold with a diameter of 100-200mm is cooled by water cooling...

Embodiment 2

[0020] Palladium alloy for yellow jewelry with large variable capacity and its processing technology. In terms of weight percentage, the composition of the alloy is: Ca: 0.8wt.%, Sn: 5.8wt.%, Bi: 3.6wt.%, Mo: 1.2wt.%, C: 0.4wt.%, Pd: 6.5wt. %, Mn: 1.5wt.%, Zn: 25.0wt.%, and the balance is palladium. The above-mentioned preparation method of palladium alloy for yellow jewelry with large variable capacity and its processing technology includes the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Protected by argon gas to avoid serious burning of alloy elements due to large air flow; heat preservation at 1650 degrees for 10 minutes during smelting, and stir evenly with high-frequency induction furnace; heat preservation at 1650 degrees for 1 minute after stirring evenly and then cast out of the furnace; palladium alloy casting adopts The steel mold with a diameter of 100-200mm is cooled by water c...

Embodiment 3

[0023] Palladium alloy for yellow jewelry with large variable capacity and its processing technology. In terms of weight percentage, the composition of the alloy is: Ca: 0.5wt.%, Sn: 2.8wt.%, Bi: 2.5wt.%, Mo: 0.6wt.%, C: 0.3wt.%, Pd: 4.2wt. %, Mn: 1.4wt.%, Zn: 24.0wt.%, and the balance is palladium. The above-mentioned preparation method of palladium alloy for yellow jewelry with large variable capacity and its processing technology includes the following steps: adding the above-mentioned raw materials into an argon-protected induction furnace, and using a graphite crucible; Protected by argon gas to avoid serious burning of alloy elements due to large air flow; heat preservation at 1650 degrees for 10 minutes during smelting, and stir evenly with high-frequency induction furnace; heat preservation at 1650 degrees for 1 minute after stirring evenly and then cast out of the furnace; palladium alloy casting adopts The steel mold with a diameter of 100-200mm is cooled by water c...

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PUM

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Abstract

The invention discloses a palladium alloy for yellow jewelry with large-variable capacity and a processing process thereof. The palladium alloy consists of the following components in percentage by weight: 0.3-0.8wt% of Ca, 2.4-5.8wt% of Sn, 2.2-3.6wt% of Bi, 0.4-1.2wt% of Mo, 0.2-0.4wt% of C, 4.0-6.5wt% of Pd, 1.0-1.5wt% of Mn, 20.0-25.0wt% of Zn and the balance of palladium. The invention provides the yellow palladium alloy with yellow excellent, which is absent on the market; and moreover, palladium alloy type for jewelry on the market is greatly enriched.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a palladium alloy. Background technique [0002] Pure gold jewelry has always been popular among people. This is because pure gold is pure, acid and alkali resistant, durable, and has the highest value. It can fully reflect the owner's wealth, luxury, stability, and loyalty. However, when pure gold is used as an ornament, due to its poor wear resistance, its surface is easily etched and etched when often worn, causing gold loss and affecting the finish of the jewelry. Precious metals in the field of jewelry, palladium is an important jewelry metal besides gold. [0003] Palladium is silvery white, malleable and slightly harder than platinum. Palladium has excellent physical and chemical properties, high temperature resistance, corrosion resistance, wear resistance and strong extensibility. It can be substituted with platinum in terms of purity, rarity and durability. The main a...

Claims

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Application Information

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IPC IPC(8): C22C5/04C22C1/02C22F1/14
CPCC22C5/04C22C1/02C22F1/14
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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