Preparation method of extrusion molding silicon carbide deck
A technology for forming silicon carbide sheds and silicon carbide ceramics is applied in the field of preparation of extruded silicon carbide shed plates, which can solve the problems of unstable product performance, large floor space and low production efficiency, and achieve high overall reliability, The effect of high production efficiency and high product strength
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Embodiment 1
[0014] 1. Forming of extruded silicon carbide shed plate
[0015] The silicon ingot wire cutting waste, silicon powder with a particle size of 1 μm, silicon dioxide powder with a particle size of 1 μm, phenolic resin and liquid paraffin are uniformly mixed in a vacuum mud mixer in a weight ratio of 60:20:3:10:7. The silicon carbide ceramic plastic mud is kneaded, extruded and formed, cut into a silicon carbide ceramic plastic shed board, and dried to form an extruded silicon carbide shed board body.
[0016] 2. Drying:
[0017] Dry the formed silicon carbide ceramic shed plate body at 40-50°C for 12 hours, at 80-90°C for 12 hours, and at 130-140°C for 6 hours.
[0018] 3. Firing:
[0019] The extruded silicon carbide shelving body after drying was fired in a nitrogen atmosphere at 2000° C. for 2 hours to produce an extruded silicon carbide shelving board.
[0020] The compressive strength of the extruded silicon carbide shelving obtained is 260 MPa.
Embodiment 2
[0022] 1. Forming of extruded silicon carbide shed plate
[0023] The silicon ingot wire cutting waste, silicon powder with a particle size of 0.01 μm, silicon dioxide powder with a particle size of 0.01 μm, phenolic resin and liquid paraffin are uniformly mixed in a vacuum mud mill in a weight ratio of 45:13:12:20:10 The silicon carbide ceramic plastic mud is made by kneading in the middle, and the silicon carbide ceramic plastic mud is extruded into shape, cut into a silicon carbide ceramic plastic shed board, and made into an extruded silicon carbide shed board body after drying.
[0024] 2. Drying:
[0025] Dry the formed silicon carbide ceramic shed plate body at 40-50°C for 20 hours, at 60-70°C for 24 hours, and at 100-110°C for 12 hours.
[0026] 3. Firing:
[0027] The extruded silicon carbide shelving body after drying was fired in a nitrogen atmosphere at 1580° C. for 4 hours to make an extruded silicon carbide shelving board.
[0028] The compressive strength of ...
Embodiment 3
[0030] 1. Forming of extruded silicon carbide shed plate
[0031] The silicon ingot wire cutting waste, silicon powder with a particle size of 3 μm, silicon dioxide powder with a particle size of 3 μm, phenolic resin and liquid paraffin were uniformly mixed in a vacuum mud mixer in a weight ratio of 75:3:3:14:5. The silicon carbide ceramic plastic mud is kneaded, extruded and formed, cut into a silicon carbide ceramic plastic shed board, and dried to form an extruded silicon carbide shed board body.
[0032] 2. Drying:
[0033] Dry the formed silicon carbide ceramic shed plate body at 25-35°C for 18 hours, at 70-80°C for 18 hours, and at 110-120°C for 9 hours.
[0034] 3. Firing:
[0035] The dried extruded silicon carbide shelving body is fired at 1750° C. for 3 hours in a nitrogen atmosphere to produce an extruded silicon carbide shelving board.
[0036] The compressive strength of the extruded silicon carbide shelving obtained is 240MPa.
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Abstract
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