Method for preparing copper-based self-lubricating material through in-situ stirring method
A technology of self-lubricating materials and stirring method, which is applied in the field of preparing copper-based self-lubricating materials by in-situ stirring method, which can solve the problems of being easily polluted and achieve the effects of avoiding secondary pollution, good mechanical properties and simple operation
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Embodiment 1
[0047] A kind of method for preparing copper-based self-lubricating material by in-situ stirring method is carried out according to the following steps:
[0048] Step 1. Copper-based melt centrifugation:
[0049] (1) Preparation of copper-based melt: take pure copper and heat and melt it in a heating furnace at a heating temperature of 1100°C to form a copper-based melt;
[0050] (2) Stirring: by central stirring, the stirring speed is 100rpm, so that the copper-based melt forms a centrifugal vortex flow;
[0051] Step 2. In situ reaction:
[0052] (1) Raw material preparation: Take Al powder as the raw material of the reinforcement phase, and B as the raw material of the lubricating phase 2 o 3 and TiO 2 , after mixing evenly, a mixed raw material is formed, wherein, by molar ratio, Al powder: B 2 o 3 : TiO 2 =6:1:3, by weight percentage, (Al powder+B 2 o 3 +TiO 2 ): 0.1wt%, the balance is pure copper;
[0053] (2) Injection feeding: the injection carrier gas is ar...
Embodiment 2
[0060] A kind of method for preparing copper-based self-lubricating material by in-situ stirring method is carried out according to the following steps:
[0061] Step 1. Copper-based melt centrifugation:
[0062] (1) Preparation of copper-based melt: take pure copper and heat and melt it in a heating furnace at a heating temperature of 1200°C to form a copper-based melt;
[0063] (2) Stirring: by central stirring, the stirring speed is 240rpm, so that the copper-based melt forms a centrifugal vortex flow;
[0064] Step 2. In situ reaction:
[0065] (1) Raw material preparation: Take Al powder as the raw material of the reinforcement phase, and B as the raw material of the lubricating phase 2 o 3 and TiO 2 , after mixing evenly, a mixed raw material is formed, wherein, by molar ratio, Al powder: B 2 o 3 : TiO 2 =7:2:3, by weight percentage, (Al powder+B 2 o 3 +TiO 2 ): 5.5wt%, the balance is pure copper;
[0066] (2) Injection feeding: the injection carrier gas is ar...
Embodiment 3
[0073] A kind of method for preparing copper-based self-lubricating material by in-situ stirring method is carried out according to the following steps:
[0074] Step 1. Copper-based melt centrifugation:
[0075] (1) Preparation of copper-based melt: take pure copper and heat and melt it in a heating furnace at a heating temperature of 1300°C to form a copper-based melt;
[0076] (2) Stirring: by central stirring, the stirring speed is 400rpm, so that the copper-based melt forms a centrifugal vortex flow;
[0077] Step 2. In situ reaction:
[0078] (1) Raw material preparation: Take Al powder as the raw material of the reinforcement phase, and B as the raw material of the lubricating phase 2 o 3 and TiO 2 , after mixing evenly, a mixed raw material is formed, wherein, by molar ratio, Al powder: B 2 o 3 : TiO 2 =8:1:2, by weight percentage, (Al powder+B 2 o 3 +TiO 2 ): 10wt%, the balance is pure copper;
[0079] (2) Injection feeding: the injection carrier gas is arg...
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