GB/T 24210-2009 English PDF

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GB/T 24210-2009: Test method for the elastic modulus of whole graphite electrodes -- Velocity of sound
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24210-2009	149	Add to Cart	2 days	Test method for the elastic modulus of whole graphite electrodes -- Velocity of sound	Valid

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Basic data

Standard ID: GB/T 24210-2009 (GB/T24210-2009)
Description (Translated English): Test method for the elastic modulus of whole graphite electrodes -- Velocity of sound
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q51
Classification of International Standard: 29.050
Word Count Estimation: 5,535
Date of Issue: 2009-07-08
Date of Implementation: 2010-04-01
Regulation (derived from): National Standard Approval Announcement 2009 No.9 (Total No.149)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the definition of the elastic modulus of graphite electrodes, elastic modulus graphite electrodes for measuring overall equipment, specimens and test procedures, calculated results, test report. This standard applies to the determination of the elastic modulus of graphite electrodes.

GB/T 24210-2009: Test method for the elastic modulus of whole graphite electrodes -- Velocity of sound

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Test method for the elastis modulus of whole graphite electrodes. Velocity of sound ICS 29.050 Q51 National Standards of People's Republic of China Overall graphite electrode modulus of elasticity velocity method Posted 2009-07-08 2010-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

The standard proposed by China Iron and Steel Association. This standard is under the jurisdiction of the National Steel Standardization Technical Committee. This standard was drafted. Metallurgical Industry Information Standards Institute. The main drafters of this standard. Sun Wei, Zhang Ying. Overall graphite electrode modulus of elasticity velocity method

1 Scope

This standard specifies the definition of the elastic modulus of graphite electrodes, graphite electrodes overall elastic modulus measurement equipment, sample and test step Suddenly, the results of calculations, test reports. This standard applies to the determination of the elastic modulus of graphite electrodes. Principle 2 Modulus of elasticity in the external force, stress and stretch or compress the relationship between the elastic deformation of the material measure, its value as a sample cross-section The stress and strain ratio.

3 instruments and equipment

3.1 Driving Circuit. to produce a 20kHz ~ 2.5MHz ultrasonic pulse generator. 3.2 input sensor. 3.3 output of the sensor. 3.4 automatic ultrasonic transit time monitor or dual trace oscilloscope.

4 Sample

4.1 sample is finished graphite electrode after processing, cross-section even without additional liquid. Sample side facing the graphite electrode axis vertical deviation is not Greater than 0.125mm. Weighing and measuring 4.2 by weight dimensions should be accurate to within ± 0.5%.

5 test procedure

5.1 connecting device according to FIG. 1, the instrument to warm up 15min. 5.2 Apply a suitable coupling agent on the input and output sensors. 5.3 input and output of the sensor docking inherent propagation time measurement instruments and sensors. 5.4 The input and output pressure sensors are in the center of the graphite electrode connectors at both ends of the bottom of the hole, measuring propagation time of ultrasonic waves. 1 --- digital time display; 2 --- ultrasonic pulse generator; 3 --- output of the sensor; 4 --- input sensor; 5 --- dual trace oscilloscope Determination of elastic modulus graphite electrode device of FIG. 1 velocity method ......

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