GB/T 3074.4-2016 Method for the determination of the coefficient of thermal expansion of graphite electrodes
1 Scope
This part of GB/T 3074 specifies the principle for determination, instruments and equipment, sample preparation, test procedures and result calculation of the coefficient of thermal expansion of graphite electrodes.
This part is applicable to the determination of the coefficient of thermal expansion of graphite electrodes of ordinary power, high power, ultra-high power and other solid carbon materials with a total expansion of no more than 1mm at 600°C, within the temperature range of room temperature to 600°C.For the determination of the coefficient of thermal expansion within other temperature ranges, this method can be referred to.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 1427 Sample method of carbon material
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
3 Definitions and principles
3.1 Definitions
Contents
Foreword II
1 Scope
2 Normative references
3 Definitions and principles
4 Apparatus
5 Preparation of sample
6 Test procedures
7 Result calculation
8 Test error
9 Test report
