Adopts ISO 16835:2015 to specify test methods for measuring the thermal expansion of refractory products caused by a change in temperature. It describes a method for determining the linear thermal expansion percentage, the linear thermal expansion curve, and the linear thermal expansion coefficient from the measurements.
Table of contents
Header
About this publication
Preface
1 Scope
2 Normative references
3 Terms and definitions
4 Contact method with cylindrical test piece
4.1 Principle
4.2 Apparatus
4.2.1 Thermal expansion test apparatus
4.2.1.1 General
4.2.1.2 Constitution of thermal expansion test apparatus
4.2.2 Heating furnace
4.2.3 Detector for amount of deformation of test piece
4.2.4 Temperature measurement apparatus
4.2.4.1 Thermocouple for measuring the temperature of test piece
4.2.4.2 Thermocouple for controlling the temperature of heating furnace
4.2.4.3 Type and precision of thermocouple
4.2.5 Callipers
4.2.6 Reference sample
4.3 Test piece
4.3.1 Shape of test piece
4.3.2 Preparation of test piece
4.3.2.1 Shaped refractory
4.3.2.2 Unshaped refractory
4.4 Procedure
4.4.1 Measurement of test piece
4.4.2 Measurement of reference sample
4.5 Calculation and drawing
5 Contact method with rod test piece
5.1 Principle
5.2 Apparatus, implement and reference sample
5.2.1 Thermal expansion test apparatus
5.2.1.1 General
5.2.1.2 Component of thermal expansion test apparatus
5.2.2 Micrometer or callipers
5.2.3 Reference sample
5.3 Test piece
5.3.1 Dimension and shape of test piece
5.3.2 Preparation of test piece
5.3.2.1 Shaped refractory
5.3.2.2 Unshaped refractory
5.4 Procedure
5.4.1 Measurement of correction factor of difference of elongation
5.4.2 Measurement of difference of elongation of test piece
5.5 Calculation and drawing
6 Non-contact method
6.1 Principle
6.2 Procedure
6.3 Calculation and drawing a figure
7 Test report
Annex A
Annex B
B.1 Recommended values of linear thermal expansion rate and coefficient of thermal expansion of fused quartz glass
B.2 Recommended values of linear thermal expansion rate and coefficient of linear thermal expansion of alumina
