Master alloy for improving the hardness of pure gold and pure silver, its preparation method and application

A technology of master alloy and pure silver, which is applied in the field of master alloys to improve the hardness of pure gold, preparation and pure silver, can solve problems such as poor casting performance, and achieve good oxidation resistance, enhanced sweat corrosion resistance, and small addition amount. Effect

Active Publication Date: 2020-06-30
袁海 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The publication number is 105369048A, which uses calcium and titanium to enhance the hardness of solid gold. The process uses vacuum melting, which has certain process limitations and relatively poor casting performance.

Method used

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  • Master alloy for improving the hardness of pure gold and pure silver, its preparation method and application
  • Master alloy for improving the hardness of pure gold and pure silver, its preparation method and application
  • Master alloy for improving the hardness of pure gold and pure silver, its preparation method and application

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preparation example Construction

[0062] The present invention also provides a preparation method of the master alloy. The method is to prepare the raw materials of each element according to the required dosage ratio, all of which are processed into -80~-325 mesh powder (the powder is prepared by mechanical method and electrolysis method), and then uniformly mixed, The obtained alloy powder is the master alloy powder. The powder is prepared by mechanical processing or electrolysis, which can solve the problems of composition segregation and difficult processing in the smelting method, and is easy to adjust the composition and industrialized production.

[0063] The present invention also provides another embodiment of the preparation method of the master alloy, the method is an alloying method, specifically comprising the following steps:

[0064] Prepare various raw material components according to the required weight ratio, and then add them into a vacuum melting furnace for smelting. The furnace temperature...

Embodiment 1

[0072] (1) A kind of master alloy that improves pure gold hardness, and this master alloy is prepared from the element of following percentage by weight: Pd powder 10%, Y powder 2%, Ti powder 10%, Cu powder 5%, Si powder 8%, Ge powder 65%, the particle size of the powder is -250 mesh.

[0073] (2) The preparation method of the master alloy described in step (1), the method may further comprise the steps:

[0074] All the above-prepared powders were placed in a three-dimensional mixer and mixed for 3 hours until uniformly mixed to obtain an intermediate alloy.

[0075] (3) Prepare hard pure gold by using the master alloy obtained in step (1) and step (2), as follows (this process is an operation step well known to those skilled in the art):

[0076] a: Take the pure gold raw material with a purity of 99.99% and the master alloy prepared above, and ensure that the pure gold raw material and the master alloy are mixed at a weight ratio of 99.91:0.09;

[0077] b: Make a wax inla...

Embodiment 2

[0086] (1) A kind of master alloy that improves pure gold hardness, and this master alloy is prepared by the element of following percentage by weight: Pd powder 30%, Y powder 5%, Ti powder 12%, Cu powder 3%, Si powder 10%, Ge powder 35%, the particle size of the powder is -250 mesh.

[0087] (2) The preparation method of the master alloy described in step (1), the method may further comprise the steps:

[0088] All the above-prepared powders were placed in a three-dimensional mixer and mixed for 3 hours until uniformly mixed to obtain an intermediate alloy.

[0089] (3) Prepare hard pure gold by using the master alloy obtained in step (1) and step (2), as follows (this process is an operation step well known to those skilled in the art):

[0090] a: Take the pure gold raw material with a purity of 99.99% and the master alloy prepared above, and ensure that the pure gold raw material and the master alloy are mixed at a weight ratio of 99.91:0.09;

[0091] b: Make a wax inlai...

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Abstract

The invention discloses an intermediate alloy capable of improving hardness of pure gold and pure silver and a preparation method and application thereof. The intermediate alloy is mainly prepared through the following elements in parts by weight: 0.1-30% of palladium, 0.1-10% of yttrium, 6-40% of titanium, 3-10% of copper, 1-30% of silicon, and 20-89% of germanium. According to the intermediate alloy, all elements are coupled with each other, thus the hardness of the hard pure gold or hard pure silver prepared by mixing the elements and pure gold or pure silver can be obviously improved; and moreover, the additive amount is small; the influence on purity of the pure gold or pure silver is small; and the pure gold or pure silver can be greatly applicable to wax setting / manual setting of the pure gold or pure silver.

Description

technical field [0001] The invention relates to the technical field of gold and silver manufacturing. Specifically, it relates to an intermediate alloy for improving the hardness of pure gold and pure silver, a preparation method and an application thereof. Background technique [0002] Pure gold and pure silver jewelry have high collectability, decoration and value preservation, and have played an important role in the development of our country since ancient times. [0003] The mosaic process is a very common method in the preparation of gold and silver jewelry. Among them, the wax inlaid process is a new type of processing technology that has emerged in recent years. This process is less affected by manual operations during the operation process, which can greatly reduce the production cost of the enterprise and improve the production efficiency and product quality of the enterprise. Therefore, this technology has obtained high-speed development in the field of gold and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C5/02C22C5/06C22C30/02C22C28/00C22C1/03C22C1/02
CPCC22C1/02C22C1/03C22C5/02C22C5/06C22C28/00C22C30/02
Inventor 袁海李效花
Owner 袁海
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