Composite melting pot for smelting magnesium and magnesium alloys
A magnesium alloy and composite technology, applied in the field of materials, can solve the problems of contamination of magnesium and magnesium alloy liquid, short service life, oxidation shedding, etc., and achieve the effects of avoiding oxidation and corrosion, long service life and low secondary pollution.
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Embodiment 1
[0015] In this embodiment, the inner layer is a silicon carbide ceramic material, the middle layer is a low-carbon steel plate with a thickness of 30 mm, and the outer layer is a nickel-based superalloy plate with a thickness of 2 mm.
[0016] Implementing:
[0017] First, the explosive welding method is used to combine the nickel-based superalloy steel plate and the low-carbon steel plate to form a bimetal composite steel plate;
[0018] The bimetal clad steel plate is processed into a bimetal clad crucible whose outer surface is made of nickel-based superalloy material and whose inner surface is made of low carbon steel.
[0019] The silicon carbide powder is uniformly deposited on the low carbon steel surface of the inner surface of the formed crucible by plasma spraying method to form a single-component ceramic phase coating with a thickness of about 1 mm, which is then ground and polished to form a composite crucible.
Embodiment 2
[0021] In this embodiment, the inner layer is a silicon nitride powder ceramic material, the middle layer is a medium carbon steel plate with a thickness of 25 mm, and the outer layer is a heat-resistant steel plate with a thickness of 3 mm.
[0022] Implementing:
[0023] First, the explosive welding method is used to combine the heat-resistant steel plate and the medium carbon steel plate into a bimetallic composite steel plate;
[0024] The bimetal clad steel plate is processed into a bimetal clad crucible whose outer surface is made of heat-resistant steel and whose inner surface is made of medium carbon steel.
[0025] Using laser cladding method, the silicon nitride powder material is evenly clad on the surface of the medium carbon steel on the inner surface of the formed crucible to form a silicon carbide ceramic coating with a thickness of about 3mm, which is then polished and polished to form a composite crucible. .
Embodiment 3
[0027] In this embodiment, the inner layer is a mixed powder ceramic material of silicon carbide and silicon nitride, the middle layer is an ordinary carbon steel plate with a thickness of 20 mm, and the outer layer is a nickel-based superalloy plate with a thickness of 4 mm.
[0028] Implementing:
[0029] First, the explosive welding method is used to combine the nickel-based high-temperature alloy steel plate and the ordinary carbon steel plate to form a bimetal composite steel plate;
[0030] The bimetal clad steel plate is processed into a bimetal clad crucible whose outer surface is made of nickel-based superalloy material and whose inner surface is made of common carbon steel.
[0031] Mix silicon carbide and silicon nitride powder uniformly at a ratio of 75:25, and then use laser cladding on the inner surface of the formed crucible to clad the pre-mixed and uniform composite ceramic powder on the surface of carbon steel to form a thickness of The silicon carbide / silic...
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