Bimetal composite plate and preparation method thereof
A composite board and bimetal technology, applied in the field of bimetal composite board and its preparation, can solve the problems of poor quality of bimetal composite board, difficulty in large-scale production, low yield, etc., to increase uniformity, enhance bonding strength and Excellent quality and comprehensive performance
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[0029] Such as figure 1 Shown, the preparation method of described a kind of bimetal composite board, it comprises the following steps:
[0030] Pretreatment of the base steel plate;
[0031] Smelting the target carbon steel;
[0032] Preheat the pretreated base steel plate to 900-1000°C, then put it into a mold, and under the protection of an inert gas, cast molten carbon steel into the mold, and combine the molten carbon steel with the base steel plate to form a composite plate rough billet ;
[0033] Apply a pressure of 0.5 to 2 MPa to the rough composite slab and keep the pressure for 2 to 5 hours to form the as-cast composite slab;
[0034] The as-cast composite slab is cold-rolled and / or hot-rolled to obtain a bimetallic composite slab.
[0035] Further, the pretreatment of the base steel plate includes the following steps:
[0036] S1: Soak the base steel plate in sodium hydroxide solution and hydrochloric acid solution for 0.5-1 hour respectively, rinse with deion...
Embodiment 1
[0051] A method for preparing a bimetal composite plate, comprising the following steps:
[0052] Step 1: Pretreatment of the 304 steel plate, the pretreatment includes the following steps:
[0053] S1: Soak the 304 steel plate in the sodium hydroxide solution with a concentration of 0.1mol / L and the hydrochloric acid solution with a concentration of 0.1mol / L for 1 hour respectively, then rinse it with deionized water for 4 times, and then dry the water on the surface of the base steel plate;
[0054]S2: Put the 304 steel plate treated with SS1 into nickel ammonium sulfate at a temperature of 550°C, keep it warm for 45 minutes, and grow a binder film coating with a thickness of about 100nm on the surface of the base steel plate in situ;
[0055] Step 2: Smelting the Q235 carbon steel to make it into molten steel, and adjusting the temperature of the molten steel to 1600°C; the target carbon steel smelting includes the following steps:
[0056] 1): Take Q235 carbon steel and h...
Embodiment 2
[0065] A method for preparing a bimetal composite plate, comprising the following steps:
[0066] Step 1: Pretreatment of the 304 steel plate, the pretreatment includes the following steps:
[0067] S1: Soak the 304 steel plate in the sodium hydroxide solution with a concentration of 0.1mol / L and the hydrochloric acid solution with a concentration of 0.1mol / L for 1 hour respectively, then rinse with deionized water twice, and then dry the water on the surface of the base steel plate;
[0068] S2: Put the 304 steel plate treated with SS1 into nickel ammonium sulfate at a temperature of 650°C, keep it warm for 45 minutes, and grow a binder film coating with a thickness of about 150nm on the surface of the base steel plate in situ;
[0069] Step 2: Smelting the Q235 carbon steel to make it into molten steel, and adjusting the temperature of the molten steel to 1700°C; the target carbon steel smelting includes the following steps:
[0070] 1): Take Q235 carbon steel and heat it t...
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