Fine grain copper-tin alloy and preparing method thereof
A copper-tin alloy and fine-grain technology, which is applied in the field of copper alloy preparation, can solve the problems of less research on copper-tin alloy refining methods, and achieve the effects of reducing microscopic inhomogeneity, promoting crystal nucleus growth, and uniform nucleation.
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Embodiment 1
[0033] A fine-grained copper-tin alloy comprising the steps of:
[0034] Step 1. Weigh the following components according to mass percentage: 10% tin powder, 0.1% titanium powder, and the balance is copper powder. The sum of the mass percentages of the above components is 100%.
[0035] Step 2, mix the components weighed in step 1, put the mixed powder into a Φ21 mold and form a green body with a height of Φ21x60mm, and put the green body into a high-purity graphite crucible for vacuum sintering. In order to prevent alloy oxidation, Feed H into the sintering furnace 2 , heated to 800°C and then kept for 30 minutes;
[0036] Step 3, in order to prevent excessive impurities from affecting the subsequent smelting process, the sintered body obtained in step 2 is subjected to surface treatment. The specific surface treatment process is: the copper-tin alloy sintered body is first pickled with 10% nitric acid alcohol and then cleaned with alcohol ;
[0037] Step 4, put the sinter...
Embodiment 2
[0039] A fine-grained copper-tin alloy comprising the steps of:
[0040] In step 1, the following components are weighed according to mass percentage: 13% tin powder, 0.3% titanium powder, and the balance is copper powder. The sum of the mass percentages of the above components is 100%.
[0041] Step 2, mix the components weighed in step 1, put the mixed powder into a Φ21 mold and form a green body with a height of Φ21x60mm, and put the green body into a high-purity graphite crucible for vacuum sintering. In order to prevent alloy oxidation, Feed H into the sintering furnace 2 , heated to 900°C and then kept for 10 minutes;
[0042] Step 3, in order to prevent excessive impurities from affecting the subsequent smelting process, the sintered body obtained in step 2 is subjected to surface treatment. The specific surface treatment process is: the copper-tin alloy sintered body is first pickled with 10% nitric acid alcohol and then cleaned with alcohol ;
[0043] Step 4, put t...
Embodiment 3
[0045] A fine-grained copper-tin alloy comprising the steps of:
[0046] Step 1. Weigh the following components according to mass percentage: 15% tin powder, 0.3% titanium powder, and the balance is copper powder. The sum of the mass percentages of the above components is 100%.
[0047] Step 2, mix the components weighed in step 1, put the mixed powder into a Φ21 mold and form a green body with a height of Φ21x60mm, and put the green body into a high-purity graphite crucible for vacuum sintering. In order to prevent alloy oxidation, Feed H into the sintering furnace 2 , heated to 950°C and then kept for 20 minutes;
[0048] Step 3, in order to prevent excessive impurities from affecting the subsequent smelting process, the sintered body obtained in step 2 is subjected to surface treatment. The specific surface treatment process is: the copper-tin alloy sintered body is first pickled with 10% nitric acid alcohol and then cleaned with alcohol ;
[0049] Step 4, put the sintered...
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