Paper machine end cover casting process

Abstract

The invention relates to a paper machine end cover casting process, which belongs to the technical field of paper machine production, and comprises the following steps of: S1, adopting molding sand to manufacture casting molds; S2, carrying out drying, specifically, drying the manufactured casting molds; S3, conducting box matching, specifically, combining the dried casting molds, and putting two cores into the casting molds so that inserting holes and connecting pipelines can be formed in the cores during subsequent casting; S4, carrying out smelting, specifically, smelting prepared raw materials to form molten metal; S5, conducting slag removal, specifically, scattering a slag removal agent into the molten metal, and after the slag removal agent fully reacts, carrying out slag removal; S6,carrying out pouring, specifically, pouring the molten metal obtained after slag removal into the casting molds; S7, performing box opening, specifically, conducting natural cooling after the molten metal is solidified, and cooling the molten metal to 800 DEG C and then performing box opening; and S8, carrying out polishing, specifically, removing flashes of the formed workpiece, conducting surface polishing, polishing the inner walls of the inserting holes and the inner walls of the connecting pipelines, and finally completing casting of a paper machine end cover. The paper machine end cover casting process has the effect of improving the quality of the paper machine end cover.

Description

technical field [0001] The present application relates to the technical field of producing paper machines, in particular to a casting process for end covers of paper machines. Background technique [0002] A paper machine is a general term for a complete set of equipment that makes pulp form into a paper web, including headboxes, wires, presses, dryers, calenders, winders, transmissions and other hosts and steam and water. , vacuum, lubrication, heat recovery and other auxiliary systems. The paper machine end cover is an important part of the paper machine, and the paper machine end cover is generally produced by casting process. [0003] In the related art, the existing paper machine end cover casting process includes the following steps: S1, heating the billet to melt it; S2, spreading a layer of release agent in the upper mold and the lower mold above the operating table, and the upper mold is lowered. Move and press the lower mold tightly, inject the melted billet into...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: when the above-mentioned paper machine end cover is cast using the process in the related technology, because the structure of the paper machine end cover is relatively complicated, the billet is melted and poured into the mold When casting, the melt will contain some waste slag that cannot be melted. After casting, it will cause the structural performance of the end cover of the paper machine to be unstable, and finally lead to the low quality of the end cover of the paper machine after forming.

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