Noble metal seamless tube and manufacturing method and manufacturing equipment thereof

Abstract

The invention discloses a noble metal seamless tube which is composed of a plurality of metallic elements, wherein the metallic elements comprise Au, Ag and Cu at the following ratio: 70-80% of Au, 4-16% of Ag and 9.8-21% of Cu. The invention also provides a manufacturing method thereof comprising the following steps: 1) under the anaerobic condition, putting metal mixture into a smelting furnace, heating the metal mixture in the smelting furnace by a medium-frequency heating power supply; 2) leading the heated metal mixture into a tube mould, cooling by a cooler, and shaping to a seamless tube preforming product; 3) leading the cooled seamless tube preforming product out of the tube mould; and 4) stretching the seamless tube preforming product to deform under high pressure to form the finished product of the noble metal seamless tube with different specifications. The manufacturing method is simple to operate, has high yield, can completely eliminate the defects, such as missing solder, perforation, irregular roll film butt joint and the like, improves seamless tube quality and lowers manufacturing cost. The invention also provides equipment for manufacturing the noble metal seamless tube.

Description

technical field [0001] The invention relates to a precious metal seamless pipe, its manufacturing method and manufacturing equipment. Background technique [0002] In the prior art, alloy seamless pipes are generally prepared by ingot casting, forging, high-frequency welding and other processes, but defects such as missing welds, perforations, and uneven butt joints of coils often appear in the seamless pipes, which make the surface of the finished product uneven. It is smooth and the precision is not high; moreover, the heat output during welding needs to be precisely controlled during the manufacturing process. Any large power fluctuations may cause welding slag inclusions and pores. Technical proficiency is required to be high, and a slight human error will result in waste products. The manufacturing process is cumbersome, and the yield rate is not high, and the precision of the finished product is not high, resulting in relatively high manufacturing costs. Contents of ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, alloy seamless pipes are generally prepared by ingot casting, forging, high-frequency welding and other processes, but defects such as missing welds, perforations, and uneven butt joints of coils often appear in the seamless pipes, which make the surface of the finished product uneven. It is smooth and the precision is not high; moreover, the heat output during welding needs to be precisely controlled during the manufacturing process. Any large power fluctuations may cause welding slag inclusions and pores. High technical proficiency is required, and a slight human error will produce waste products. The manufacturing process is cumbersome, and the yield rate is not high, and the precision of the finished product is not high, resulting in relatively high manufacturing costs.