ASTM C704 PDF

ASTM C704 PDF

This standard is issued under the fixed designation C ; the number immediately 1 This test method is under the jurisdiction of ASTM Committee C08 on. Abrasion Resistance of Refractory Materials at Room Temperature1 This standard is issued under the fixed designation C/CM; the number immediately. ASTM C – Download as PDF File .pdf), Text File .txt) or read online. ASTM C

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The nut is attached to the gun. For monolithic refractory specimens, test the surface that is, top free face aztm bottom mold face that most accurately reflects the actual field situation.

ASTM C – Free Download PDF

The use of aastm drying equipment is necessary in order to achieve consistent results. Only the most abrasion resistant materials can be 25 mm [1 in. Take the atm significant effect of this small air pressure variation into consideration and use 7c04 gauges as specified in 6.

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If correcting the position of the glass nozzle does not correct the problem then check the condition of the venturi, the condition of the abrading media feed lines, and the blast gun. If the abrasion plate results do not meet the standard, adjust the air pressure to the gun and run the calibration procedure again using a new glass plate each time until an abrasion of 9.

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Regulate the air pressure to kPa [65 psi]. Ideal glass tube 3 Detailed prints for the construction of the test chamber are available at a nominal cost from ASTM International C7044. Normally, the free surface is the most appropriate test surface. Two test results that do not differ by more than the reproducibility interval shall be considered to be from the same population; conversely, two test results that do differ by more than the reproducibility interval shall be considered to be from different populations.

Verify the sizing of the grit by either user confirmation of the screen analysis or a certificate of conformance from the supplier. The minimum recommended diameter for dial type is mm [4.

Precision and Bias 5 Attach the blast gun to the top of the chamber through the hole in the top and secure it in place with a nut. Thank you for interesting in our services. No interference statements can be made aetm this time. Additionally, calibrate the abrasion tester any time an abnormality occurs in the test such as erratic results or a hole being worn in the glass nozzle. For the ruggedness test, flint glass tube inside diameters of 4. Follow all requirements of the supplement.

Replace any parts as necessary and calibrate the abrasion tester in accordance with Section 7 before proceeding. Several values are stated only in SI units as a matter of convention and to permit comparison of results. Permission rights to photocopy the standard may also be secured from the Aztm website www. Turn on the air pressure.

ASTM C-704

Ensure the gun is perpendicular to the specimen. Replace any components that are worn prior to calibration. The glass tube is placed through the sleeve in the tubing nut, ast the grommet within the nut.

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Confirm the density of the float glass plates by testing one plate in each batch. This test method can also be applied to castable refractories see Metric Dimensions, Practice C and Practice C and plastic refractories see Practice C Included are the abrading c70 weight gramsspecimen weight gramsspecimen weight loss due to abrasion gramsand the resultant volume loss cubic centimeters.

If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. We need your help!

Used for weighing the abrading media and test specimens. Take the statistically significant effect of this small tube inside diameter variation into consideration. It is also recommended that air gauges be recalibrated at frequent intervals.

Ensure that the main supply funnel has sufficient volume to hold the required g of silicon carbide abrading medium. An acceptable test chamber can be made from a weatherproof electrical switch box. Report the calibration value of the glass plates, the air pressure used, and the calibration date for the last calibration event run prior to running the samples.

When connected with the abrasion tester, ensure that the feed mechanism delivers the abrading media in the specified time axtm 6 15 s.