Moulding method for slag pot structure

Abstract

A moulding method for a slag pot structure. A slag pot involved in the invention employs a handstand moulding (with an upward dome). The method is as below: scraping an inner cavity contour by using a scraper plate moulding method; forming a separating layer on the surface of the scraped inner cavity contour by brushing paint; scraping a slag pot external surface contour (hangers not included) out of the separating layer on the surface of the scraped inner cavity contour; forming a separating layer on the external contour by brushing paint and laying waste paper; filling in sand cores for forming a trunnion seat at the periphery; filling in hangers (hangers of the slag pot are forging pieces); placing sandboxes at the periphery; placing a runner and a sink head according to technology; forming an upper case; filling in pre-embedded cores; pounding firmly and blowing hard; removing the upper case; removing sands between the profile contour and the inner cavity contour; carrying out mould assembling; and inspecting dimension. The method provided by the invention employs repetitious usage of scraper plate to omit sand cores for forming the external surface contour and inner cavity contour and reduce joints of the sand cores; and the method not only saves time but also has low cost. A casting has few casting fins on the surface, high precision and an integral and beautiful structure.

Description

technical field [0001] The invention relates to a manual sand casting method for large castings in the technical field of sand casting, in particular to a molding method for a slag pot structure. Background technique [0002] Slag pots are widely used in various casting and metallurgical industries to hold high-temperature metal liquids. Because the size of the slag tank is generally large, the shape and outline are complex, and most of them are irregular structures. This structure determines the inconvenience of its shape. According to past experience, the traditional complete core shape is generally used for production. Due to the large number of core boxes and large size of this molding method, the operation is troublesome, the production cycle is long, and the model cost is high; at the same time, because of the core molding, there are too many transition places between the sand cores, which leads to casting seams More, not only the cost is high, the man-hours used are...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the disadvantages of high cost, time-consuming, low precision and unattractive appearance in the traditional modeling method, the present invention provides a new molding method of slag pot, that is, "skin modeling"

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