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High temperature sclerometer capable of conducting continuous temperature changing multi-point testing

A multi-point test and hardness tester technology, applied in the direction of testing material hardness, etc., can solve the problems of limited moving distance of samples, complicated and time-consuming testing process, inability to continuously test multi-point hardness values, etc., to increase the number of hardness values ​​measured. , The effect of good promotion and use value and simple structure

Pending Publication Date: 2018-12-11
HEBEI IRON AND STEEL
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used high-temperature hardness tester device can only perform a limited number of hardness value tests in a certain temperature environment, and cannot achieve continuous multi-point hardness value testing within a large temperature range.
When testing the hardness index at different temperatures, it is often necessary to repeatedly heat and test different samples. The entire testing process is complicated and time-consuming.
The key reason for this problem is that currently known high-temperature hardness testers adopt a centering mechanical structure in which the centerline of the heating furnace and the centerline of the hardness tester are completely consistent, and the test sample can only move in one direction in the furnace.
Due to the limited size of the furnace, the movable distance of the sample is limited, resulting in only a very limited number of hardness values ​​for the same sample.

Method used

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  • High temperature sclerometer capable of conducting continuous temperature changing multi-point testing
  • High temperature sclerometer capable of conducting continuous temperature changing multi-point testing
  • High temperature sclerometer capable of conducting continuous temperature changing multi-point testing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In this embodiment, a variable temperature hardness tester arranged in an eccentric furnace is used, and a heating furnace induction heating control structure and heating furnace atmosphere protection equipment are used to adjust the test atmosphere and temperature of the sample. The distance between the dots of the sample that is often carried out is required to be 2mm, so the eccentricity d1 of the center line of the heating furnace and the hardness tester in this example is 10mm, and the effective moving stroke L of the sample is 15mm. After equipment verification, one sample in this example can be used for 105 tests of hardness value determination. If it is calculated according to the experimental requirements of carrying out 10 tests for each test condition and taking the average value, the test conditions of 10 samples can be adjusted and changed without turning on the furnace, such as changing the temperature of 10 samples.

Embodiment 2

[0035] In this embodiment, a variable temperature hardness tester arranged in an eccentric furnace is adopted, the experimental temperature of the sample is adjusted by the induction heating control structure of the heating furnace, and the vacuum equipment of the heating furnace is used to protect the sample from oxidation. The distance between dots of samples that is often carried out is required to be 3 mm. In this embodiment, the eccentric distance d1 of the center line of the heating furnace and the hardness tester is 18 mm, and the effective moving stroke L of the sample is 30 mm. After the equipment test verification, the same sample in this implementation can be used for 180 times of hardness value determination tests. If it is calculated according to the experimental requirements of carrying out 10 tests for each test condition and taking the average value, the temperature of the sample can be adjusted and changed 18 times without turning on the furnace, and the variab...

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Abstract

The invention discloses a high temperature sclerometer capable of conducting continuous temperature changing multi-point testing, and belongs to the technical field of metal material mechanics detection equipment. The high temperature sclerometer is used for conducting multi-point high temperature hardness detection on metal materials. The high temperature sclerometer is characterized in that a penetrator is connected with a sclerometer body, a heating furnace is mounted on a heating furnace rotary mechanism, the heating furnace rotary mechanism is fixed to a heating furnace lifting platform,the heating furnace lifting platform is fixed to a sclerometer lower supporting structure, one side of the sclerometer lower supporting structure is connected with the sclerometer body, the penetratoris perpendicularly inserted into the heating furnace, a sample moving mechanism is connected to one side of the heating furnace, the heating furnace and the heating furnace rotary mechanism are co-axial cylinders, and eccentric distance exists between the central axes of the heating furnace and the heating furnace rotary mechanism and the axis of the penetrator. The high temperature sclerometer achieves the purpose that a furnace type high temperature sclerometer conducts continuous temperature changing hardness testing by randomly selecting points on the whole surface under the premise thatthe furnace is not turned on to adjust the sample, and the hardness testing quantity of the same sample is greatly improved.

Description

technical field [0001] The invention relates to a hardness tester for testing the high-temperature hardness of metal materials, which belongs to the technical field of metal material mechanical testing equipment. Background technique [0002] Hardness testing is an important testing item for evaluating the mechanical properties of materials. General hardness testing is carried out at room temperature. When it is necessary to evaluate the hardness level of a material under different temperature environments, the material is usually heated to the required temperature, kept for a period of time, cooled rapidly, and then tested for hardness index at room temperature. Such a test method cannot realize the online test of the high-temperature hardness index of the material, and the test result cannot accurately reflect the actual hardness level under the specific test temperature condition. The determination of the high-temperature hardness index of materials is the most direct a...

Claims

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Application Information

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IPC IPC(8): G01N3/54
CPCG01N3/54G01N2203/0078G01N2203/0226
Inventor 孙中华张雲飞刘需冯小雷王海明
Owner HEBEI IRON AND STEEL
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