An improved process for producing copper alloy powder by water mist method

Abstract

The invention discloses an improved process for producing copper alloy powder by a water atomization method. The process includes the steps: (1) smelting by an intermediate frequency furnace: adding nonmetallic ore elements and salt in the smelting process; (2) performing water atomization pulverization; (3) performing vacuum suction filtering: adding composite antioxidants when suction filtering is performed; (4) treating the atomized water obtained by vacuum suction filtering, then recycling the treated atomized water, and drying, screening and packing the obtained copper alloy powder. The nonmetallic ore elements account for 0.5-0.7% of the weight of a copper block, the salt accounts for 0.3-0.5% of the weight of the copper block, an ejecting angle ranges from 40 degrees to 45 degrees, a spray nozzle is made of No.45 steel, the diameter of a package leaking hole ranges from 5mm to 8mm, atomization pressure ranges from 18Mpa to 25Mpa, the height of an atomization barrel is 3m, cooling water level ranges from 0.3m to 0.5m, and the composite antioxidants account for 0.05-0.15% of the weight of the copper block. By the aid of the improved process for producing the copper alloy powder by the water atomization method, the produced spherical copper alloy powder has the advantages of fine sphericity and formability, uniform components, excellent sintering property, less surface oxidation, low production cost, high production efficiency and stable product quality.

Description

technical field [0001] The invention relates to the technical field of metal powder production, in particular to a process for producing copper alloy powder by an improved water mist method. Background technique [0002] Copper and copper alloy powder is one of the basic raw materials in powder metallurgy, widely used in automobiles, motorcycles, oil bearings, electrical alloys, electronic information, electrical carbon products, oil drilling, chemical synthesis, diamond products and many other fields. With the development of powder metallurgy industry at any time, the application scope of powder metallurgy is expanding day by day, and the requirements for the type and quality of powder are getting higher and higher. At present, the electrolysis method is mostly used to produce copper powder, but the electrolysis method has serious environmental pollution, high energy consumption, high cost, single product, only pure copper powder can be produced, copper alloy powder cannot ...

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Problems solved by technology

However, the bulk density of copper alloy powder produced by water atomization is 2.4-4g / cm3, which cannot replace electrolytic copper powder, and the oxygen content is high, and the powder forming rate is low, so it cannot meet the demand.