Smelting method of silicon phosphorus brass

A brass, silicon and phosphorus technology, applied in the field of non-ferrous metallurgy casting, can solve the problems of difficult to meet the smelting requirements, large loss of brass silicon, phosphorus, metal zinc volatilization, etc., to improve mechanical properties and machinability, enhance hardness and Corrosion resistance, the effect of enhancing thermal expansion and contraction performance

Inactive Publication Date: 2016-08-24
ANHUI JIUHUA KIMRUN COPPER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional brass smelting process, due to the low melting point of metal zinc, a large amount of metal zinc is volatilized, oxidized, and slagged during smelting, resulting in high metal loss, and the loss of silicon and phosphor...

Method used

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Examples

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Embodiment 1

[0017] A method for smelting silicon-phosphorus brass, said method comprising the following steps:

[0018] (1) Put the copper material and charcoal into the melting furnace, then use -20°C nitrogen to blow into the furnace, stop blowing when the pressure in the furnace reaches 3-3.5MPa, close the furnace door and keep the pressure for 12-24 hours , and then open the furnace door to release the pressure, then pass inert gas into the furnace, and raise the temperature to completely melt the copper material;

[0019] (2) When the copper material is completely melted and the temperature reaches 1090-1190°C, open the furnace door and add 50-85kg / ton of copper silicon, 20-30kg / ton of copper zinc, and 10-20kg / ton of copper Chromium, 10-20kg / ton of vanadium in copper material, 1-2kg / ton of phosphorus in copper material, 1-2kg / ton of iodine in copper material, pass inert gas into the furnace, heat up to completely melt the furnace material;

[0020] (3) When the charge is completely ...

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Abstract

Disclosed is a smelting method of silicon phosphorus brass. The method comprises following steps: a copper material and wood charcoal are added into a smelting furnace, and temperature rises, so that the copper material is completely smelted; when the copper material is completely smelted, silicon, zinc, chromium, vanadium, phosphorus and iodine are added; after the temperature reaches 1260 DEG C to 1410 DEG C, -80 DEG C nitrogen is blown into a furnace, and after the temperature is reduced to 810 DEG C to 900 DEG C, tin, holmium, neodymium, titanium, palladium, cerium, tellurium and aluminum are added into the furnace; after a furnace material is completely smelted, and the temperature reaches 1350 DEG C to 1500 DEG C, , an aggregated refining agent and a base material are added, molten copper is fully stirred, and then the temperature rises to 1700 DEG C; and after the temperature is reduced to 1100 DEG C to 1200 DEG C, high-purity nitrogen at the normal temperature is led into the furnace. According to the smelting method, components of zinc, silicon, phosphorus and the like are fully locked, through temperature reduction in the smelting process, a gold phase is distorted, hardness of a copper alloy is greatly improved, in the smelting process, nitrogen is blown in, it can be fully ensured that the silicon and the phosphorus are blended in a metal lattice, and meanwhile alloy components can be evenly mixed and matched with copper.

Description

technical field [0001] The invention relates to the field of nonferrous metallurgy casting, in particular to a method for smelting silicon-phosphorus brass. Background technique [0002] In the copper alloy smelting process, the cost of melting and casting mainly comes from the oxidation and burning of the metal. The metal oxidation loss of smelting one ton of brass is 20kg. If the comprehensive yield of copper processing is 50%, the metal loss allocated to each ton of products in the smelting process alone is 40kg (brass). Silicon phosphorus brass is the addition of silicon and phosphorus components to brass, which can improve the mechanical properties of copper alloys, and has been widely used at present. In the traditional brass smelting process, due to the low melting point of metal zinc, a large amount of metal zinc is volatilized, oxidized, and slagged during smelting, resulting in high metal loss, and the loss of silicon and phosphorus in brass after smelting is also...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/06C22C9/10
CPCC22C1/02C22C1/06C22C9/10
Inventor 张军唐兰花何孔田何孔高
Owner ANHUI JIUHUA KIMRUN COPPER IND
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