Sample for detecting strength of mould shell, manufacturing method of sample for detecting strength of mould shell, and strength detection method of sample for detecting strength of mould shell

A manufacturing method and strength detection technology, which is applied in the preparation of test samples, and the use of stable bending force to test the strength and strength characteristics of materials, etc., can solve the problem of improving the shell making process of castings and provide more reliable data and thickness There is no more intuitive and convenient method for intensity and other issues

Inactive Publication Date: 2019-01-29
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no more intuitive and convenient method for evaluating the manufacturability of shell manufacturing, especially the relationship between different shell layers, thickness and strength, and it cannot provide more reliable methods for improving the shell manufacturing process of casting shells. data

Method used

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  • Sample for detecting strength of mould shell, manufacturing method of sample for detecting strength of mould shell, and strength detection method of sample for detecting strength of mould shell
  • Sample for detecting strength of mould shell, manufacturing method of sample for detecting strength of mould shell, and strength detection method of sample for detecting strength of mould shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: Fabrication of a shell strength sample corresponding to a certain oriented columnar crystal blade

[0041] 1) Press the test wax model and combine the modules, with 6 samples in each group;

[0042] 2) According to the manufacturing process of the blade shell with 5 layers and the sealing layer and the oriented column crystal casting shell, the same process scheme is used for the sample wax model module to make the shell;

[0043] 3) Dewaxing the mold, and pre-baking the mold shell after placing it for 24 hours;

[0044] 4) Cut 6 samples from the formwork group;

[0045] 5) Place the sample in a flexural strength tester to test the room temperature and high temperature strength.

[0046] Specifically, the specific sample preparation process is as follows:

[0047] a. Use wax molds and wax presses to make solid cylindrical wax molds, process wax molds for making test samples for shell strength, and combine cylindrical wax molds into cylindrical wax mold gro...

Embodiment 2

[0053] Embodiment 2: Fabrication of an equiaxed crystal shell strength sample corresponding to a certain turbine rotor

[0054] 1) Press the test wax model and combine the modules, with 6 samples in each group;

[0055] 2) According to the 7 layers of the shell of the turbine rotor and the manufacturing process of the sealing layer and the equiaxed crystal casting shell, the same process scheme is used for the sample wax model module to make the shell;

[0056] 3) Dewaxing the mold, and pre-baking the mold shell after placing it for 24 hours;

[0057] 4) Cut 6 samples from the formwork group;

[0058] 5) Place the sample in a flexural strength tester to test the room temperature and high temperature strength.

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Abstract

The invention discloses a sample for detecting the strength of a mould shell, a manufacturing method of the sample for detecting the strength of the mould shell, and a strength detection method of thesample for detecting the strength of the mould shell. A cylinder wax mould module formed by combining cylinder wax moulds is coated with shell manufacturing materials of the sample for detecting thestrength of the mould shell, and the manufactured sample for detecting the strength of the mould shell is provided with a hollow cylindrical structure, the layer number and the wall thickness of the sample are made according to the layer number and the wall thickness of an actual casting mould shell, and the thickness is not limited, because an currently used sample for detecting the strength of the mould shell is of a long strip-shaped fixed size and is suitable for detecting the performance of different shell manufacturing materials with the same layer number and the same size.

Description

technical field [0001] The invention belongs to the field of investment casting precision casting shell manufacturing, and relates to investment casting shell performance testing samples and investment casting shell performance manufacturing thereof, in particular to a sample for testing shell strength and its manufacturing method and its strength Detection method. Background technique [0002] In the investment casting industry, the mold shell is a very important intermediate process, and its performance directly affects the quality of the casting. Especially the room temperature and high temperature strength of the shell. Insufficient room temperature strength will cause handling cracks; insufficient high temperature strength will cause steel leakage during the pouring process, which will cause the shell and casting to be scrapped, and cause the leaked molten steel to damage the pouring equipment. Excessive shell strength will lead to excessive stress and deformation of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N3/20
CPCG01N1/28G01N3/20G01N2203/0023G01N2203/0226
Inventor 董茵段继东海潮陈杰段朋国郭涛潘锐商辉
Owner AECC AVIATION POWER CO LTD
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