High-surface-precision copper alloy strip and preparation method thereof
A copper alloy strip, high surface technology, applied in the direction of metal rolling, metal material coating process, manufacturing tools, etc., can solve the problems of surface quality decline of copper alloy strip, affecting the economic benefits of enterprises, oxidation of copper alloy surface, etc. , to achieve the effect of improving antioxidant capacity, excellent high temperature stability, and improving surface accuracy
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Embodiment 1
[0025] The copper-hafnium alloy plate with hafnium mass fraction of 0.1% was evenly ground with sandpaper with a particle size of 300#, washed with water three times after grinding, and dried in cold air; 2 0.5% N by volume 2 +O 2 The mixture was heated in a belt furnace with mixed atmosphere, and the oxygen content in the system was monitored by an oxygen sensor. The heating temperature was 600 °C, and the reaction was performed for 0.5 h. The surface micro-oxidized copper-hafnium alloy plate is heated in a hydrogen reduction furnace, the reduction temperature is 400 ° C, and the reaction is performed for 2 hours, so that a high-hardness nano-hafnium oxide dispersion-strengthened copper thin layer is formed on the surface of the plate; the obtained nano-hafnium oxide dispersion-strengthened copper plate is obtained. It is fully heated and hot rolled. After the hot rolling is completed, the obtained sheet is put into an annealing furnace at 400 ° C for annealing treatment for...
Embodiment 2
[0027] The copper-hafnium alloy plate with a hafnium mass fraction of 0.5% was evenly ground with sandpaper with a particle size of 400#, washed with water four times after grinding, and dried in cold air; 2 5% N by volume 2 +O 2 Heating in a mixed atmosphere belt furnace, and monitoring the oxygen content in the system by an oxygen sensor, the heating temperature was 400 °C, and the reaction was performed for 1 h. The copper-hafnium alloy plate with its surface slightly oxidized is heated in a hydrogen reduction furnace, the reduction temperature is 700 ° C, and the reaction is 0.5 h, so that a high-hardness nano-hafnium oxide dispersion-strengthened copper thin layer is formed on the surface of the plate; the obtained nano-hafnium oxide dispersion-strengthened copper plate is The material is fully heated and hot rolled. After the hot rolling is completed, the obtained sheet is placed in an annealing furnace at 450°C for annealing treatment for 20 minutes, then quickly and u...
Embodiment 3
[0029] The copper-hafnium alloy plate with a hafnium mass fraction of 0.3% was evenly ground with sandpaper with a particle size of 450#, washed with water four times after grinding, and dried in cold air; 2 2% N by volume 2 +O 2 Heating in a mixed atmosphere belt furnace at a heating temperature of 500°C and reacting for 1.5h. The surface micro-oxidized copper-hafnium alloy plate is heated in a hydrogen reduction furnace, the reduction temperature is 600 ° C, and the reaction is 0.5 h, so that a high-hardness nano-hafnium oxide dispersion-strengthened copper thin layer is formed on the surface of the plate; the obtained nano-hafnium oxide dispersion-strengthened copper plate is obtained. The material is fully heated and hot rolled. After the hot rolling is completed, the obtained sheet is put into an annealing furnace at 450 ° C for annealing treatment for 30 minutes, then quickly and uniformly cooled to room temperature, and then subjected to room temperature cold rolling d...
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Abstract
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