Method for testing heat conductivity coefficient
A technology of thermal conductivity and testing method, which is applied in the field of metallurgy, can solve problems such as damage to testing instruments, achieve high-quality steel burning, ensure safety, and reduce energy consumption
Pending Publication Date: 2022-06-28
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The technical problem to be solved by the present invention is the problem that the existing testing method for the thermal conductivity of alloy materials easily causes damage to the testing instrument
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0045] The specific experimental steps of embodiment 1 are as follows:
[0046] Test a certain steel for reflow temperature test, and obtain the reflow deformation temperature of the sample t reflow ≈ 1375 ℃; according to the use range of the equipment and actual needs, determine the upper limit temperature t of the sample test to be 1200 ℃, which meets the requirements; The above samples were tested for thermal expansion rate (η), and the results showed that with the increase of temperature, the expansion amount of the sample increased, and the expansion rate η of the sample was 2.0% under the condition of 1200 °C.
[0047] The maximum temperature tested in the present invention is 1200°C, so corundum crucible is selected as the carrying container, and the corundum crucible is circular, and the inner diameter of the crucible is measured to be 12.2-12.7mm; the short cylindrical steel with a diameter of 12.4mm and a height of 2.5mm is produced. The diameter of the steel sample ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| temperature | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a heat conductivity coefficient testing method, and belongs to the technical field of metallurgy. The method for testing the heat conductivity coefficient adopts a laser heat conductivity instrument as main equipment for testing, and specifically comprises the following steps: a, determining the soft melting temperature and the test upper limit temperature of a material; b, measuring the original size of the to-be-tested sample, obtaining the swelling amount of the to-be-tested sample at the upper limit temperature through an experiment, and obtaining the thermal expansion rate of the to-be-tested sample according to a formula; c, measuring the size of the bearing container and the size of a supporting frame at the bottom of the container, determining the test size of the to-be-tested sample according to a formula, and preparing the test sample; and d, spraying graphite on the surface of the test sample, putting the test sample into a bearing container, putting a sapphire sheet on the sample, putting the bearing container into a laser heat conductivity instrument, putting a flow guide device, and testing to obtain the heat conductivity coefficient. The method can safely and effectively test the heat conductivity coefficient of the sample under the high-temperature condition, guarantees the safety of equipment and instruments, and can effectively solve the problem that the existing method for testing the heat conductivity coefficient of the alloy material is easy to cause damage to a detection instrument.
Description
technical field [0001] The invention belongs to the technical field of metallurgy, relates to the technical field of using a laser thermal conductivity meter to test the thermal conductivity of steel and titanium products, and in particular relates to a method for testing the thermal conductivity. Background technique [0002] The heating furnace is an indispensable thermal equipment in steel production. Its task is to heat the billet according to the production rhythm, so that the surface temperature and internal temperature distribution of the billet meet the rolling requirements, and at the same time, the heating is uniform, avoiding overheating and overburning, and reducing the oxidation of the billet. and decarburization, thereby providing billets with excellent heating quality for the rolling mill. The furnace time, heating temperature of each section, and tapping temperature of the billet are controlled by the heating furnace control model, and the thermal conductivit...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 秦洁刘功国齐建玲王海波
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP