Heat simulation method for differential temperature rolling

A thermal simulation and differential temperature technology, applied in the field of metal material technology research, can solve the problems of decreased strain and temperature uniformity, decreased research accuracy, and different process conditions, and achieves low experimental cost, short experimental period, and sample size. small effect

CN106018458AActive Publication Date: 2016-10-12北京创元冠国际科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2016-10-12

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Abstract

The invention discloses a heat simulation method for differential temperature rolling, and belongs to the technical field of metal material technology research. On the basis of Gleeble thermal simulated test machine, an air injection cooling device is additionally arranged inside a working cavity of the thermal simulated test machine. The method comprises the experimental steps of manufacturing, sample grinding, thermocouple welding, differential temperature rolling, quenching treatment and experimental analysis. The heating characteristics of the Gleeble thermal simulated test machine, the conventional sample size is changed, an auxiliary cooling tool is used, and the heat simulation method is used for differential temperature rolling technology research, and convenient and fast research means is provided for mature application of the differential temperature rolling technology.
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Description

technical field

[0001] The invention belongs to the technical field of metal material technology research, and relates to a steel material differential temperature rolling process, in particular to a method for conducting a differential temperature rolling experiment on steel using a Gleeble thermal simulation testing machine. Background technique

[0002] For the thick-gauge steel plates and large-gauge wire rods used in the fields of marine, transportation, energy, and major equipment, the thickness is more than 20mm, and the performance requirements are high. Conventional hot rolling has the problem of uneven deformation in the thickness direction. The differential temperature rolling technology proposed in recent years is to quickly cool and roll during the rolling process, and the cooling has no time to penetrate deep into the interior, forming a state of low temperature in the surface layer in the thickness direction, and maintaining a high temperature in the center lay...

Examples

Embodiment Construction

[0031] The method is based on a Gleeble thermal simulation testing machine, and an air jet cooling device 2 is added in the working cavity of the thermal simulation testing machine. see figure 1 , the jet cooling device 2 is two groups, which are symmetrically arranged between the two indenters 1 and the two ends of the sample 3 by means of the mounting frame 4, including the spray chamber 203 and the air inlet pipe 201 and the air outlet pipe 202 connected to the spray chamber 203, and the air inlet pipe 201 is connected to the cooling air source, and the air outlet of the air outlet pipe 202 faces the end of the sample 3 . In order to make the cooling uniform and enhance the cooling effect, two air outlet pipes 202 are installed symmetrically on both sides of the sample 3 . The gas jets of the gas outlet pipe 202 are 3 to 5 gas jet holes facing the sample, and the diameter of the gas jet holes is 0.5-1.5 mm, generally 1 mm.

[0032] The method is specifically carried out a...