Deep-cavity casting mold drying process

Abstract

The invention discloses a deep cavity mold drying process, which includes the following processing steps: step 1: vertical outside mode, placed the cylinder inside model within in the outside module, kept a gap between the bottom of the internal model and the bottom of outside model; step 2: the wind tube installs on the top of the inside model, and the down hole of the wind tube pressurized with the top of the inside model; the wind return cover installs out of the wind tube, the down hole of the wind return cover pressurized with the top of the outside model; step 3: on the top of the wind tube and the wind return cover placed the cycle heat air dryer whose wind inlet connects to the up hole of the wind tube, the wind return outlet connects to the top hole of the wind return cover; step 4: open the hot air cycle dryer, along the hot air channel formed in the first step the hot air rapid moves and rapid transfer the heat of the wall to heat the inside and outside mode at the same time. The drying process has small energy consumption and low cost because of the inside and outside casting is completed in one time.

Description

technical field [0001] The invention relates to a drying process for casting molds, in particular to a drying process for large-sized deep-cavity casting molds. Background technique [0002] Large-sized deep-cavity molds [such as cylinder castings with a size of φ3×12 (m)] include outer molds and inner molds. At present, the drying of the inner and outer molds and the surface drying after coating The drying process adopts the separate drying of the outer mold and the inner mold, that is, the outer mold and the inner mold are separately put into the drying furnace, or the outer mold is dried by a circulating hot air dryer, and the inner mold is dried by ignition of alcohol-based paint. There are the following problems in this drying method for deep-cavity molds: 1. It is necessary to build a huge drying furnace for the dried molds, which has a large floor area, large investment, and limited scope of application (especially height); 2. , The outer mold is dried in a drying fu...

AI Technical Summary

Problems solved by technology

There are the following problems in this drying method for deep cavity molds: 1. It is necessary to build a huge drying furnace for the dried molds, which has a large floor area, large investment, and limited scope of application (especially height); 2. , The outer mold is dried in a drying furnace, and a large amount of heat is used for heating the non-working surface such as the shell, and the thermal efficiency is low; 3. The inner mold is ignited and dried with alcohol-based paint, which is only suitable for resin sand molds, and the scope of application is limited; 4. Separate drying of the two requires high energy consumption, more transportation and hoisting operations in the workshop, and high drying costs

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