A kind of aluminum-tin-copper alloy-based bearing material and its preparation method
A technology of tin-copper alloy and base shaft is applied in the field of preparation of aluminum-tin-copper alloy base bearing material, which can solve the problems of low bearing capacity of high-tin aluminum alloy, high hardness of low-tin aluminum alloy and high processing cost, and achieve low melting cost. , The effect of good friction reduction and low production cost
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Embodiment 1
[0024] Prepare 6.30Kg of K according to the molar ratio of Ti:B of 1:2 2 TiF 6 -KBF 4 Mixed salts are used as reactants, by reaction equation 3K 2 TiF 6 +6KBF 4 +10Al→3TiB 2 +10AlF 3 +12KF shows that during the melting process, the reaction consumption of the aluminum melt accounts for 18% of the mixed salt, so after considering the reaction consumption of the aluminum melt and the normal burning loss of alloy elements, according to Al:Sn:Cu:Zn:Mn Aluminum ingots, aluminum-copper-zinc-manganese master alloys and tin blocks required to prepare a 10.3Kg base alloy for a mass ratio of 85.0:12:1.2:1.0:0.8, wherein the aluminum-copper-zinc-manganese master alloys are aluminum ingots, zinc plates, Al -12Cu master alloy and Al-6Mn master alloy are melted in a vacuum induction furnace and cast at 710°C. The mass ratio of mixed salt to matrix alloy is 1:1.63.
[0025] According to Na 3 AlF 6 : MgCl 2 Prepare 0.50Kg Na for a mass ratio of 3:1 3 AlF 6 -MgCl 2 The mixed salt...
Embodiment 2
[0029] Prepare 4.6Kg K according to the molar ratio of Ti:B 1:2 2 TiF 6 -KBF4 Mixed salts are used as reactants, by reaction equation 3K 2 TiF 6 +6KBF 4 +10Al→3TiB 2 +10AlF 3 +12KF shows that during the melting process, the reaction consumption of the aluminum melt accounts for 18% of the mixed salt, so after considering the reaction consumption of the aluminum melt and the normal burning loss of alloy elements, according to Al:Sn:Cu:Zn:Mn Aluminum ingots, aluminum-copper-zinc-manganese master alloys and tin blocks required to prepare a 10.3Kg base alloy for a mass ratio of 91.4:6:1.5:0.6:0.5, wherein the aluminum-copper-zinc-manganese master alloys are aluminum ingots, zinc plates, Al -12Cu master alloy and Al-6Mn master alloy are melted in a vacuum induction furnace and cast at 750°C. Wherein, the mass ratio of the mixed salt to the matrix alloy is 1:2.21.
[0030] According to Na 3 AlF 6 : MgCl 2 Prepare 0.32Kg Na for a mass ratio of 3:1 3 AlF 6 -MgCl 2 The mix...
Embodiment 3
[0034] Prepare 8.5Kg K according to the molar ratio of Ti:B 1:2 2 TiF 6 -KBF 4 Mixed salts are used as reactants, by reaction equation 3K 2 TiF 6 +6KBF 4 +10Al→3TiB 2 +10AlF 3 +12KF shows that during the melting process, the reaction consumption of the aluminum melt accounts for 18% of the mixed salt, so after considering the reaction consumption of the aluminum melt and the normal burning loss of alloy elements, according to Al:Sn:Cu:Zn:Mn Aluminum ingots, aluminum-copper-zinc-manganese master alloys and tin blocks required for the mass ratio of 82.0:15:0.8:1.2:1.0 to prepare 10.4Kg base alloy, wherein the aluminum-copper-zinc-manganese master alloys are aluminum ingots, zinc plates, Al -12 copper master alloy and Al-6Mn master alloy are melted in a vacuum induction furnace and cast at 725°C. Wherein, the mass ratio of the mixed salt to the matrix alloy is 1:1.22.
[0035] According to Na 3 AlF 6 : MgCl 2 Prepare 0.76Kg Na for a mass ratio of 3:1 3 AlF 6 -MgCl 2...
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