Mold and method for preparing high-temperature compressive strength test sample of resin sand

Abstract

The invention belongs to the technical field of casting molds, and particularly discloses a mold and a method for preparing a high-temperature compressive strength test sample of resin sand. The mold comprises a mold bottom plate, a forming outer mold and a forming core, the forming outer molds are connected to the upper portion of the mold bottom plate and spliced pairwise. Every two adjacent forming outer molds are spliced to form a vertically-through cylindrical cavity. One forming core is arranged at each cavity and comprises a forming part and a connecting part; the forming part is in a round bar shape, is placed in the cavity and is coaxial with the cavity; the connecting part is cylindrical, is coaxially connected with the forming part and is embedded into the mold bottom plate, and the top surface of the connecting part is flush with the top surface of the mold bottom plate; the hollow sample is prepared from the cavity of the forming outer mold and the forming core arranged in the forming outer mold, so that on one hand, the problem that the core part of the sample is not thoroughly heated when the sample is heated in a high-temperature compressive strength test is solved through the hollow structure; on the other hand, the cross section area of the sample is increased due to the hollow structure, and the stability of a test result is improved.

Description

technical field [0001] The invention belongs to the technical field of casting molds, and more specifically relates to a mold and a method for preparing resin sand high-temperature compressive strength test samples. Background technique [0002] In recent years, with the continuous development of casting technology, resin sand casting has been widely used in casting because of its outstanding advantages such as high production efficiency and high dimensional accuracy. With the continuous deepening of research, more and more researchers of casting defects began to pay attention to the high temperature performance of resin sand, especially the high temperature compressive strength. [0003] However, when performing high-temperature compressive strength tests on resin sand, it often occurs that the sample is not fully heated, that is, the outer layer of the sample is fully heated, but the core is not completely heated. In view of this problem, the current high temperature comp...

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Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a mold and method for preparing resin sand high-temperature compressive strength test samples, so as to solve the problem that the core of the sample is not heated through when the high-temperature compressive strength test is performed. At the same time, it solves the problem of unstable test results due to the small cross-sectional area of ​​the sample, and provides a resin sand high-temperature compressive strength test sample mold and test sample that can be fully heated through, has a large cross-sectional area, and stable test results. sample production method

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