Testing method for determining quenching speeds through thermal simulation test

A technology of cooling rate and test method, applied in the field of thermal simulation, can solve problems such as increased ductile-brittle transition temperature, reduced low-temperature impact toughness, harsh service conditions, etc., and achieves the effect of precise correspondence

CN106248715AInactive Publication Date: 2016-12-21SINOSTEEL XINGTAI MACHINERY & MILL ROLL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-12-21
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses a testing method for determining quenching speeds through a thermal simulation test and belongs to the technical field of thermal simulation. The testing method includes the following steps that A, multiple sets of samples made of the same material are kept in a thermal simulation tester for heating and heat holding at the same quenching temperature for the same heat holding time; B, different quenching speeds are set for quenching of the samples; C, the same tempering process is set for tempering of the samples; D, the multiple sets of samples obtained after thermal treatment are subjected to an impulse test at the required temperature, and respective shock absorption energy is obtained; E, a curve is drawn with the quenching speeds as transverse coordinates and the shock absorption energy as longitudinal coordinates, and the critical quenching speeds meeting the use requirement under the condition of the quenching temperature and the heat holding time are obtained. A reliable basis is provided for thermal treatment process parameter selection by determining the critical quenching speeds, meeting qualified material mechanical performance, of the samples.
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Description

technical field

[0001] The invention relates to the technical field of thermal simulation, in particular to a test method for determining a quenching cooling rate through a thermal simulation test. Background technique

[0002] Because thermal simulation technology can economically and effectively study the structure and performance changes of materials and components under heating, or under the condition of heating and stress at the same time, it can provide reliable technical data and analysis and judgment basis for actual engineering structures and product production processes. It has attracted more and more attention from the engineering and scientific circles; so far, thermal simulation test devices can be divided into two types: direct energization resistance heating and high-frequency induction heating according to the heating method. Gleebl thermal simulator is a set of temperature, pressure , Strain parameters are controlled in a resistance heating full analog devic...

Examples

Embodiment Construction

[0018] Below in conjunction with embodiment the present invention is described in further detail:

[0019] The test method for determining the quenching cooling rate by thermal simulation test includes the following steps:

[0020] Step A. Process the sample size of the same material to 11×11×70mm to meet the requirement that the Gleeble thermal simulation testing machine can hold the sample, place the sample in a vacuum chamber for thermal simulation test; conduct heat treatment test The size of the sample is 11×11×70mm, which is slightly larger than the standard sample size of 10×10×55mm for the impact test, which is conducive to the metallographic inspection of the sample at any time during the heat treatment, and the sample after the metallographic inspection It will not affect the subsequent impact test. During the impact test, the sample only needs to be processed into a standard sample again, which realizes the simultaneous detection of metallographic structure and impa...