High-temperature alloy slag inclusion filter screen and application
A high-temperature alloy and filter technology, which is applied in the fields of precision casting and material preparation, can solve problems such as slag inclusion, and achieve the effects of improving quality and performance, maximum practicability and controllability
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Embodiment 1
[0025] In this embodiment, the grade of the superalloy is K465, and the preparation process of the superalloy slag filter screen is as follows:
[0026] Select the raw material of the filter screen as corundum powder, silica powder, carbon powder and silica sol, etc., wherein: corundum powder content 85%, silica powder 2%, carbon powder 2%, silica sol 11% (mass percentage); In the powder, the corundum powder with a particle size of 20-80 mesh accounts for 40 wt% of the total corundum powder, and the rest is corundum powder with a particle size of 200-1000 mesh; the particle size of the silica powder is 320 mesh, and the particle size of the carbon powder is 320 mesh.
[0027] Mix corundum powder of two particle sizes evenly; add carbon powder, mix evenly; add silica sol to mix evenly. Under the conditions of room temperature and pressure 200MPa, the filter screen with high temperature strength of 80MPa is made through the steps of cold pressing, vacuum heat sintering strengthe...
Embodiment 2
[0032] In this embodiment, the grade of the superalloy is K418, and the preparation process of the superalloy slag filter screen is as follows:
[0033] Select filter screen raw material to be corundum powder, silica powder, carbon powder and silica sol etc., wherein, corundum powder content 80%, silica powder 3%, carbon powder 5%, silica sol 12% (mass percentage); Corundum Among the powders, the corundum powder with a particle size of 20-80 mesh accounts for 50 wt% of the total corundum powder, and the rest is corundum powder with a particle size of 200-1000 mesh; the particle size of the silica powder is 320 mesh, and the particle size of the tungsten powder is 320 mesh.
[0034] Mix corundum powder of two particle sizes evenly; add carbon powder, mix evenly; add silica sol to mix evenly. Under the condition of room temperature and pressure of 600MPa, the filter screen with high temperature strength of 60MPa is made through the steps of cold pressing, vacuum thermal sinterin...
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