Method for assembling polycarbonate manufacturing apparatus and polycarbonate manufacturing apparatus
AssigneeAsahi Kasei Kabushiki Kaisha
InventorsYusuke SHIGA, Nobutsugu NAMBA
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Abstract
A method for assembling a polycarbonate manufacturing apparatus comprising a plurality of apparatus elements, the method comprising: protecting an opening of each apparatus element, wherein the apparatus element is prepared as follows: at least a portion of a metal surface that comes into contact with an internal fluid of the apparatus element is polished with an abrasive corresponding to buff #400, and the polished metal surface is washed until becoming a state where no dirt is attached to a nonwoven fabric in a test of contact between the metal surface and the nonwoven fabric; and connecting the opening of the apparatus element to the opening of another apparatus element within a dust cover.
Claims17
A method for assembling a polycarbonate manufacturing apparatus comprising a plurality of apparatus elements, in which the method comprising:
- protecting an opening of each apparatus element,
- wherein the apparatus element is prepared by:
- polishing at least a portion of a metal surface that comes into contact with an internal fluid of the apparatus element with an abrasive corresponding to buff #400, and
- washing the polished metal surface until becoming a state where no dirt is attached to a nonwoven fabric in a test of contact between the metal surface and the nonwoven fabric;
- and
- connecting the opening of the apparatus element to the opening of another apparatus element within a dust cover.
A polycarbonate manufacturing apparatus, wherein at least a portion of a metal surface that comes into contact with an internal fluid has an arithmetic average roughness (Ra) of 0.25 μm or less.
Dependencies are inferred from the claim text.