A maintenance method for high pressure casting mold

Abstract

The invention discloses a maintenance method for a high-pressure casting mold. The maintenance method comprises the steps of air injection and water drainage, concentrated hydrochloric acid brushing, water injection and cleaning, and the like, wherein the air injection and water drainage step is that water is injected into waterways and micro holes in the mold through a drainage hole and an exhaust hole in the mold at the air pressure of 0.45 to 0.55 MPa till water in the mold is drained; the concentrated hydrochloric acid brushing step is that the surface of the mold is brushed with concentrated hydrochloric acid through a fur brush; and the water injection and cleaning step is that water is injected into the waterways in the mold for 30 to 60 min through the drainage hole in the mold at the water pressure of 0.2 to 0.4 MPa, and the surface of the mold is cleaned through clean water at the same time. According to the maintenance method, the operation is simple, the cost is low, the mold darkening is avoided while the mold surface is cleaned, the mold appearance is improved, the drainage and exhaust effect of the mold is improved while the micro holes of the mold are dredged, the service life of the mold is prolonged, and the maintenance method can be reutilized and can be popularized and applied to maintenance of ceramic molds.

Description

technical field [0001] The invention relates to the field of mold maintenance, in particular to the field of high-pressure casting mold maintenance. Background technique [0002] After the high-pressure casting mold is used on the molding line for a long time, a large amount of minerals and metal impurities in the water and mud will precipitate in the micropores of the mold, causing problems such as clogging of the micropores of the mold and poor local drainage. In addition, the molding environment is humid and hot, and microorganisms are easy to breed on the surface and inside of the mold, resulting in blackening of the mold surface, and the long-term blackening state also leads to micropore blockage and poor drainage. After the mold is off the assembly line, the mold is closed and stored in the warehouse after maintenance with drugs. During the period when the molds are in the warehouse, most of the molds will still have surface blackening and poor drainage due to the gro...

AI Technical Summary

Problems solved by technology

During the period when the molds are in the warehouse, most of the molds will still have surface blackening and poor drainage due to the growth of bacteria and microorganisms, which will affect the use of the molds

There is no method for mold maintenance in the prior art