A Centrifugal Casting Ring-Inlaid Combined Mold

Abstract

The invention discloses a centrifugal-casting inlayed-ring modular mold which comprises an outer cover, an inner sleeve, a positioning device used to position the inner sleeve and a material blocking device used to prevent material overflowing, wherein an outer mold is installed on the outer side of the inner sleeve, the positioning device is installed on one side of the mold, and the material block device comprises two parts which are respectively installed on two ends of the mold. In the centrifugal-casting inlayed-ring modular mold, the inner surface of the inner sleeve undergoes high-frequency quenching, so that service life is increased by over 30%. By using the centrifugal-casting inlayed-ring production modular mold with the structure, mold replacement time can be shortened effectively. When a traditional overall-type mold does need to be replaced, the mold will be disassembled from a casting machine and then replaced, wherein the mold replacement operation is very inconvenient and concentricity calibration will be carried out to the mold after the mold replacement and waste a lot of time. During the mold replacement of the modular mold provided by the invention, only the inner sleeve does need to be replaced, the mold is light and replaced easily, and the concentricity calibration to the mold is not needed, so that mold replacement time is saved, and production efficiency is increased.

Description

technical field [0001] The invention relates to a centrifugal casting ring-embedded combined mold. Background technique [0002] High-nickel austenitic wear-resistant insert rings have been widely used in the production of pistons as the reinforcing material for the first ring groove of pistons. At present, most of the insert rings are produced by centrifugal casting. It has high efficiency and is favored by the majority of manufacturing enterprises. However, the working conditions of the mold under this casting method are harsh and the life of the mold is low. Most of the molds use integral molds. The mold material is HT250 or 20# steel. Cracks are easy to occur under the action of thermal stress, and this kind of integral mold, once the local cracks are serious, the whole set of molds will be scrapped, and the waste is extremely serious. Contents of the invention [0003] The purpose of the present invention is to solve the problem of low mold life and serious waste, an...

AI Technical Summary

Problems solved by technology

[0002] High-nickel austenitic wear-resistant insert rings have been widely used in the production of pistons as the reinforcing material for the first ring groove of pistons. At present, most of the insert rings are produced by centrifugal casting. It has high efficiency and is favored by the majority of manufacturing enterprises. However, the working conditions of the mold under this casting method are harsh and the life of the mold is low. Most of the molds use integral molds. The mold material is HT250 or 20# steel. Cracks are easy to occur under the action of thermal stress, and this kind of integral mold, once the local cracks are serious, the whole set of molds will be scrapped, and the waste is extremely serious.

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