Filter for filtering molten metal and manufacture method of filter
A filter and carbon black technology, applied in chemical instruments and methods, filtration separation, separation methods, etc., can solve the problems of restricted use, undurable mechanical strength of filters, etc., and achieve reduced heat capacity, high refractoriness, chemical properties, etc. stable effect
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Embodiment 1-8
[0033] According to the formula in Table 1, a filter with a size of 50*50*15mm was made, and the obtained filter was tested. The test results are shown in Table 2.
[0034] In Table 2, the compressive strength at room temperature is measured in accordance with GB / T25139-2010, reflecting the mechanical strength of the filter. The higher the compressive strength at room temperature, the less likely the filter is to be damaged during transportation and use. In addition, generally speaking, the higher the normal temperature compressive strength, the higher the high temperature compressive strength of the filter. The density reflects the specific heat capacity of the filter. The lower the density, the less heat the filter absorbs when the filter melts the metal, and the less likely the molten metal will solidify.
[0035] Table 1 The raw material ratio of each example
[0036] Example
1
2
3
4
5
6
7
8
Corundum
11
18
15
28
-
15
15
15
Alumina powder
17
17
15
-
35
15
15
15
...
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