Preparation method of drainage agent for refining in three phases
A drainage agent, three-step technology, applied in foundry equipment, manufacturing tools, metal processing equipment, etc., can solve the problems of low refractoriness, inclusions, and low pouring rate of drainage agent, and achieve moderate specific gravity and refractory, specific gravity Large, well-composed effects
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Embodiment 1
[0016] Take 55 parts of chrome sand (0.2-0.8mm), 18 parts of quartz sand (0.5-1.2mm), 12 parts of quartz sand (0.5-0.9mm), 10 parts of zircon sand (0.5-1.2mm), feldspar sand ( 0.5-1.2mm) 4 parts, 400 mesh graphite 0.8 parts, first mix quartz sand, zircon sand, feldspar sand evenly, then add graphite, chrome ore sand and stir evenly, then dry at 85°C until the water content is 0.1 %the following. Among them, the active ingredient percentage content is Cr 2 o 3 25.36%, SiO 2 32.26%, ZrO 2 9.15%. The prepared drainage agent was used in Shanghai Baosteel three-step refining 409L and TCS345 steel, the refining time was as long as 5 hours, and the self-opening rate was 76.2%, which was 36.2 percentage points higher than the self-opening rate of imported sand from South Korea.
Embodiment 2
[0018] Take 65 parts of chrome sand (0.2-0.63mm), 15 parts of quartz sand (0.5-1.2mm), 12 parts of quartz sand (0.5-0.9mm), 12 parts of zircon sand (0.5-1.2mm), feldspar sand ( 0.5-1.2mm) 6 parts, 400 mesh graphite 1.2 parts, first mix quartz sand, zircon sand, feldspar sand evenly, then add graphite, chrome ore sand and stir evenly, then dry at 100°C until the water content is 0.1 %the following. Among them, the active ingredient percentage content is Cr 2 o 3 29.9%, SiO 2 29.82%, ZrO 2 10.8%. The prepared drainage agent is used in three-step refining stainless steel, the refining time is more than 4 hours, and the self-opening rate is 95%.
Embodiment 3
[0020] Take 75 parts of chrome sand (0.2-0.7mm), 12 parts of quartz sand (0.5-1.2mm), 15 parts of zircon sand (0.5-1.2mm), 3 parts of feldspar sand (0.5-1.2mm), and 400 mesh graphite 0.8 parts, first mix quartz sand, zircon sand, and feldspar sand evenly, then add graphite and chrome ore sand in turn, stir evenly, and then dry at 100°C until the water content is below 0.1%. Among them, the active ingredient percentage content is Cr 2 o 3 34.5%, SiO 2 13.08%, ZrO 2 13.6%. The prepared drainage agent was used for three-step refining stainless steel, the refining time was as long as 3 hours, and the self-opening rate was 97%.
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