A kind of preparation method of quasi-single crystal pure copper
A pure copper, single crystal technology, applied in the direction of manufacturing tools, furnace types, metal rolling, etc., can solve the problem of high energy consumption, and achieve the effect of low cost and high efficiency
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Embodiment 1
[0018] (1) Selecting a pure copper rod with an equiaxed grain structure as a blank;
[0019] (2) Carry out drawing treatment to pure copper bar, the total deformation of drawing is 75%, and the diameter reduction of each pass is 0.5mm;
[0020] (3) Inductively heat the head area of the pure copper rod obtained by the drawing process under a protective atmosphere, with a first uniform heating area and a first low-temperature radiation area, the temperature of the first uniform heating area is 600 ° C, and the heat preservation The time is 40h, the heating rate is 2°C / min, the length of the first uniform heating zone is 20mm, and the temperature of the first low-temperature radiation zone is controlled at 280°C, thereby forming a seed crystal at the head;
[0021] (4) The pure copper bar whose head is formed with a seed crystal is sequentially placed in the second uniform heating zone and the second low-temperature radiation zone, and the on-line continuous induction heating a...
Embodiment 2
[0023] (1) Selecting a pure copper rod with an equiaxed grain structure as a blank;
[0024] (2) Drawing treatment is carried out to pure copper bar, the total deformation of drawing is 60%, and the diameter reduction of each pass is 1mm;
[0025] (3) Inductively heat the head area of the pure copper rod obtained by the drawing process under a protective atmosphere, with a first uniform heating area and a first low-temperature radiation area, the temperature of the first uniform heating area is 500 ° C, and the heat preservation The time is 50h, the heating rate is 1°C / min, the length of the first uniform heating area is 5mm, and the temperature of the first low-temperature radiation area is controlled at 260°C, so as to form a seed crystal at the head;
[0026] (4) The pure copper rod with the head forming the seed crystal is sequentially placed in the second uniform heating zone and the second low-temperature radiation zone, and the on-line continuous induction heating ann...
Embodiment 3
[0028] (1) Selecting a pure copper rod with an equiaxed grain structure as a blank;
[0029] (2) Drawing treatment is carried out to pure copper rod, the total deformation of drawing is 90%, and the diameter reduction of each pass is 1mm;
[0030] (3) Inductively heat the head area of the pure copper rod obtained by the drawing process under a protective atmosphere, with a first uniform heating area and a first low-temperature radiation area, the temperature of the first uniform heating area is 700 ° C, and the heat preservation The time is 6 hours, the heating rate is 5°C / min, the length of the first uniform heating zone is 10mm, and the temperature of the first low-temperature radiation zone is controlled at 290°C, so as to form a seed crystal at the head;
[0031] (4) In the second uniform heating zone and the second low-temperature radiation zone, the pure copper rod with the head forming the seed crystal is subjected to online continuous induction heating and annealing ...
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Abstract
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