CN1940102A - Gold and platinum based noble metal composite-material formula and its process - Google Patents

Abstract

Formula and process for gold and platinum-based noble-metal composite materials are disclosed. The composite materials consist of gold 75%, Y2O3 2-3%, Cu and Ag 22-23%. The process is carried out by collocating, rolling, putting particular enhanced material into ball grinder, grinding to a certain size, taking it out, agitating by liquefied metal, forming cast, heating for particular enhancer, volatilizing while removing harmful substances at 550degree, forming oxidation layer on surface, vacuum supplying, inducing into argon shield, putting gold and platinum noble meta, particular enhancer, improved wet calcium or magnesium ion into vacuum casting machine, agitating by high-frequency magnetic-filed vortex, mixing, heating and pressurizing. It has better abrasive resistance and fluidity.

Description

Gold, platinum based noble metal composite-material formula and technology

Affiliated technical field

The present invention relates to noble metal composite-material, be specifically related to the composition and engineering of ornaments granule enhancement type gold, platinum based noble metal composite-material.

Background technology

Along with the development of market economy and the raising of people's living standard, the mid-90, white, colored noble metal jewelry that the general layout that traditional gold ornament rules all the land is quietly risen are broken, and are the trend that rises year by year.

Usually, the white in the jewellery, colored precious metal material have white 18K gold, colored 18K gold, platinum etc.Traditional technology is to add a small amount of other metallic element in the main body precious metal element, finishes by the method for alloying.But quality and the technology owing to product was improving constantly in recent years, for the requirement of material also in continuous variation, the raw material that utilize tradition assembly sweetening process method to make are difficult to reach specification requirement, complex technique converted products raw material have appearred utilizing in therefore external jewellery industry developed country, and have obtained preferably effect in the application of reality.As the nineties U.S. Wen's Wei ornaments just adopted cold rolling forging and pressing complex method (claim again forging and pressing gold), every quality index of product is all improved a lot.

Noble metal composite-material is to be the matrix material of matrix with precious metal and alloy thereof, and satisfy the characteristics of metal-base composites, as high wear resistance and good flowability etc., with regard to noble metal composite-material, the difficulty that mainly faces has at present: deleterious chemical reactions such as serious surface reaction, oxidizing reaction will take place in (1) when high temperature is made.(2) wetting property is poor between precious metal matrix and the reinforce, not even lubricant nature.(3) content, distribution, the direction of reinforce by design requirements is evenly distributed in the precious metal matrix.

Summary of the invention

The object of the present invention is to provide a kind of wearability and flowability of improving traditional material, be convenient to gold, platinum based noble metal composite-material formula and the technology of processing and making.

Content of the present invention is: a kind of gold, platinum based noble metal composite-material, by weight percentage, gold is 75%, Y ₂O ₃Be that 2～3%Cu and Ag are 22～23%.A kind of gold, platinum based noble metal composite-material, by weight percentage, gold is 75%, and Ni-FeC is 2～3%, and Ni and Ag are 22～23%.A kind of gold, platinum based noble metal composite-material, by weight percentage, gold is 75%, Ag-Cu ₂O is that 2～3%, Cu and Co are 22～23%.A kind of gold, platinum based noble metal composite-material, by weight percentage, platinum is 90%, Y ₂O ₃Be that 1～2%, Pd, Co and Cu are 8～9%.A kind of gold, platinum based noble metal composite-material, by weight percentage, platinum is 95%Y ₂O ₃＜1%, Pd, Co and Cu are 4～5%.

Because the present invention has adopted particle strongthener and liquid metal paddling process, obviously improves the wear resistance and the flowability of traditional material, be convenient to processing and making.

Embodiment

The present invention is further described with embodiment below.

Table 1 is the main prescription (by weight percentage) of gold, platinum based noble metal composite-material:

Table 1

The material classification		Main material	The particle strongthener		All the other
							Title	Ratio	Title	Ratio
			Auri	Yellow 18K	75% gold medal	Y 2O 3					2～3％	Cu and Ag	22～23％
White 18K	75% gold medal	Ni-FeC					2～3％	Ni and Ag	22～23％
				Rose 18K	75% gold medal	Ag-Cu 2O				2～3％	Cu and Co	22～23％
The platinum base	PT900	90% platinum					Y 2O 3	1～2％	Pd，Co，Cu				8～9％
			PT950	95% platinum	Y 2O 3	＜1％				Pd，Co，Cu	4～5％

Y wherein ₂O ₃(yittrium oxide), Ni-FeC (cementite-nickel), Ag-Cu ₂O (cupric oxide-Yin), Y ₂O ₃(yittrium oxide), Y ₂O ₃(yittrium oxide), Cu copper, Ag silver, Ni nickel, Co cobalt, Pd palladium.

Specific implementation method:

1. by the requirement of table 1 main material quality, preparation is golden, the platinum noble metals base material;

2. particle reinforce preparation;

Press table 1 and select the particle reinforcing material, average diameter 10～30um, and will be pre-configured and the good particle reinforcing material of rolling put into ball mill and grind, reach size after taking-up for subsequent use;

3. the compound and mould casting of liquid metal paddling process;

For improving the wetting property between gold, platinum based noble metal liquid and the particle reinforce, prevent that the metal stirring from causing metal liquid oxidation and air-breathing in a large number, takes following measure:

1) for preventing Organic pollutants and adsorption moisture, the particle reinforce is carried out heat treated, the objectionable impurities volatilization is removed, form zone of oxidation as thin as a wafer simultaneously on the surface;

2) adopt and to vacuumize earlier, the method for applying argon gas protection again, thus effectively preventing the suction of gas in the recombination process and the oxidation of metal bath, corresponding heating-up temperature and argon pressure see Table 2;

Table 2

The material classification		Main material	Technical parameter
					Heating-up temperature (℃)	Argon pressure (kPa)
			Auri	Yellow 18K			75% gold medal	1050	630
White 18K	75% gold medal	1100			630
				Rose 18K		75% gold medal	1150	630
The platinum base	PT900	90% platinum			1950				630
			PT950	95% platinum		2050	630

3) with gold, platinum noble metals, particle reinforce, improve wetting property calcium or magnesium ion is inserted in the vacuum casting machine, adopt high frequency magnetic field eddy current paddling process, make gold, platinum noble metals and particle reinforce uniform mixing, by heating and pressurizing, reach composite goal.

4. production

This operation comprises that mainly material rolls sheet, wire drawing, casting, polishing, surface treatment, a complete set of production process such as inlays.

Claims (6)

1, a kind of gold, platinum based noble metal composite-material is characterized in that: by weight percentage, gold is 75%, Y ₂O ₃Be that 2～3%Cu and Ag are 22～23%.

2, a kind of gold, platinum based noble metal composite-material is characterized in that: by weight percentage, gold is 75%, and Ni-FeC is 2～3%, and Ni and Ag are 22～23%.

3. a gold, platinum based noble metal composite-material, it is characterized in that: by weight percentage, gold is 75%, Ag-Cu ₂O is 2～3%, and Cu and Co are 22～23%.

4. a gold, platinum based noble metal composite-material, it is characterized in that: by weight percentage, platinum is 90%, Y ₂O ₃Be that 1～2%, Pd, Co and Cu are 8～9%.

5. a gold, platinum based noble metal composite-material, it is characterized in that: by weight percentage, platinum is 95%Y ₂O ₃＜1%, Pd, Co and Cu are 4～5%.

6. technology for preparing the described product of claim 1-6 is characterized in that:

One, preparation gold, platinum noble metals base material;

Two, particle reinforce preparation;

Pre-configured and the good particle reinforcing material of rolling is put into ball mill grinds, reach take out after the size for subsequent use;

Three, the compound and mould casting of liquid metal paddling process;

1) the particle reinforce is carried out heat treated, the objectionable impurities volatilization is removed, form zone of oxidation as thin as a wafer simultaneously on the surface;

2) employing vacuumizes earlier, again applying argon gas protection;

3) with gold, platinum noble metals, particle reinforce, improve wetting property calcium or magnesium ion is inserted in the vacuum casting machine, adopt high frequency magnetic field eddy current paddling process, make gold, platinum noble metals and particle reinforce uniform mixing, by heating and pressurizing, reach composite goal.

Four, production: comprise that material rolls sheet, wire drawing, casting, polishing, surface treatment, a complete set of production process such as inlay.