High-corrosion-resistant Cu alloy and preparation method thereof
A technology of copper alloy and high corrosion resistance, which is applied in the field of high corrosion resistance copper alloy and its preparation, can solve the problems that the corrosion resistance of copper-nickel alloy does not meet this standard, and achieve good resistance to sulfur-containing corrosion, enhanced corrosion resistance Atmospheric corrosion ability, effect of improving strength
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[0020] The preparation method of the high corrosion-resistant copper alloy of the present invention comprises the following steps: batching-melting and casting-hot extrusion-hot forging-finished product. Its specific process steps include:
[0021] (1) Billet melting and casting: use pure copper, pure iron, pure manganese, pure nickel, pure zinc and other metals with a purity greater than 99.9% as raw materials, and melt them in an intermediate frequency induction melting furnace according to the alloy composition, and the melting temperature is 1150-1270 ℃, after heat preservation, pour into a copper ingot of Φ250mm at a temperature of 1200-1250℃;
[0022] (2) Hot extrusion process: After the copper ingot is peeled, it is hot-extruded at a temperature of 600-900°C, and extruded into a copper rod of Φ50mm;
[0023] (3) Hot forging process: the extruded copper alloy bar is forged and deformed at 500-900°C, first forged in one direction, and the pass reduction is 20-30%; then t...
Embodiment 1
[0025] Its production process is as follows: ingredients - casting - hot extrusion - hot forging - finished product
[0026] The specific process is as follows: smelting in an intermediate frequency induction melting furnace, the ingredients are distributed as shown in Table 1, and the smelting temperature is 1180°C. Before smelting, the cathode copper and alloy materials such as iron, manganese, nickel and zinc are evenly added into the furnace, and the large and small material blocks are placed as evenly as possible, and the materials are as dense as possible. During smelting, it is kept at 1200°C for standing still, and after slag removal, it is poured into a Φ250mm ingot at a temperature of 1200°C. After the ingot is peeled, it is hot-extruded at a temperature of 860°C, and extruded into a Φ50mm copper rod. Then, hot forging the copper alloy bar at 500°C for 4 times, turning the billet 90° after each forging, with a reduction of 20% per pass and a total reduction of 80%, ...
Embodiment 2
[0028] Its production process is as follows: ingredients - casting - hot extrusion - hot forging - finished product
[0029] The specific process is as follows: smelting in an intermediate frequency induction melting furnace, the ingredients are distributed as shown in Table 1, and the smelting temperature is 1200°C. Before smelting, the cathode copper and alloy materials such as iron, manganese, nickel and zinc are evenly added into the furnace, and the large and small material blocks are placed as evenly as possible, and the materials are as dense as possible. During smelting, it is kept at 1200°C for standing still, and after slag removal, it is poured into a Φ250mm ingot at a temperature of 1250°C. After the ingot is peeled, it is hot-extruded at a temperature of 700°C and extruded into a Φ50mm copper rod. Then, hot forging the copper alloy bar at 850°C for 3 times, turning the billet 90° after each forging, with a reduction of 30% per pass and a total reduction of 90%, a...
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Abstract
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