Drying device for centrifugal casting coating layer of cylinder jacket

Abstract

The invention belongs to the technical field of centrifugal casting, and particularly relates to a drying device for a centrifugal casting coating layer of a cylinder jacket. The drying device comprises a centrifugal casting machine and a metal mold thereof, a front cover plate and a rear bottom plate are arranged at the front end and the rear end of the metal mold respectively, a coating layer is sprayed on the inner wall of the metal mold, a sprue gate is formed in the center of the front cover plate, a flame gun is arranged in front of the sprue gate and erected on a moving trolley, a rail is laid below the moving trolley, the moving trolley can move along the rail, a flame nozzle is arranged on the rear portion, close to the flame penetrating hole, of the flame gun, an ignition gun is arranged on the side of the flame gun, a gas port and a combustion-supporting gas port are formed in the front portion of the flame gun, the gas port is connected with a first gas supply hose through a first gas inlet valve, and the combustion-supporting gas port is connected with a second gas supply hose through a second gas inlet valve. According to the drying device, natural gas is adopted for reverse drying from inside to outside from the metal mold, the coating layer is dried faster and more fully, and casting defects caused by supercooling of a cylinder jacket material are avoided.

Description

technical field [0001] The invention belongs to the technical field of centrifugal casting, in particular to a coating layer drying device for centrifugal casting of a cylinder liner. Background technique [0002] In order to adapt to the production of higher explosive pressure cylinder liner materials, in the centrifugal casting process, it is necessary to spray a thicker coating layer on the inner wall of the centrifugal casting metal mold. The existing drying method of water-based coating is to rely on the waste heat of the metal mold to spray the coating into it. The layer is dried in one direction from the outer circle to the center of the inner hole, and the drying efficiency is low. Moreover, due to the thickening of the metal coating layer, it is difficult to fully dry the coating layer in the original method, which will lead to faster heat conduction of the coating layer. , the material of the cylinder liner is too cold, so that the metallographic phase of the blank...

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Problems solved by technology

[0002] In order to adapt to the production of higher explosive pressure cylinder liner materials, in the centrifugal casting process, it is necessary to spray a thicker coating layer on the inner wall of the centrifugal casting metal mold. The existing drying method of water-based coating is to rely on the waste heat of the metal mold to spray the coating into it. The layer is dried in one direction from the outer circle to the center of the inner hole, and the drying efficiency is low. Moreover, due to the thickening of the metal coating layer, it is difficult to fully dry the coating layer in the original method, which will lead to faster heat conduction of the coating layer. , the material of the cylinder liner is too cold, so that the metallographic phase of the blank casting of the cylinder liner is unqualified, or the casting structure is prone to shrinkage, shrinkage, low mechanical properties, poor safety factor, early wear, short service life and other defects, which seriously affect the cylinder set of product quality

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