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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Alternate dust handling systems such as venting to the outside are acceptable as long as the chamber pressure is maintained at the desired level.

ASTM C – Free Download PDF

Observe the abrasion pattern of the glass plate through the edge of the plate. Check the inside diameter periodically for wear Fig. Provide an orifice approximately 4. Interferences Factors known to Affect Results 5. When the Carco Blast Gun is used, this will replace the steel nozzle supplied with the gun. Check the length and diameter of each tube prior to use. Maintain the mm 8 in. Included are the abrading media weight gramsspecimen weight gramsspecimen weight loss due to abrasion gramsand the resultant volume loss cubic centimeters.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Do not completely fill or flood the gun supply funnel with material.

Regulate the air pressure to kPa [65 psi]. The glass plate may be placed in the abrasion tester with either face up. 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.


Historical Version s – view previous versions of standard.

ASTM C-704

Use one gauge as the primary gauge; all pressure measurements are to be taken from that gauge. Other sand blast gun models or types may affect test results.

The feed funnel contains a suitable orifice to obtain a flow time of 6 15 s while delivering g of abrading media into the gun supply funnel. The diameter may be checked by the use of a gage consisting of a tapered stainless steel rod astn the 4. Typically a to g capacity balance is required.

Include the date of the calibration, the air pressure used, the calibration value, and the event that triggered the calibration in the log entry. Ensure that there are not any flow obstructions between the gauge and the gun.

Due to small irregularities normally present in the shape of the glass plates, use of a water immersion method is suggested. It is the astn of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Affix the gauges to the blast gun as shown in Fig.

When connected with the abrasion tester, ensure that the feed mechanism delivers the abrading media in the specified time of 6 15 s. Please help us to share our service with your friends. Inspect the air generator nozzle for wear before any test series and replace as necessary. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.


Glass tube lots purchased as 7 mm outside diameter tube with a nominal 1. One by mm 4 by 4 in. Current edition approved March 1, Dial to have a mirrored band for knife-edged pointer tip reflection to prevent parallax error.

In this case, dry the sample as in 8. c7704

If the vacuum gauge does not show a minimum vacuum of mm 15 in. An acceptable test chamber can be made from a weatherproof electrical switch box. Your astk are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Connect the vacuum gauge to a T-fitting in the abrasive supply line. If the readings on the gauges differ by more than 6. Precision and Bias 5 Size px x x x x We need your help!

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.

Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. This will allow the operator to push the glass tubing up until the rod touches the venturi, ensuring a 2 mm [0. Highly Abrasion Resistant Materials S1. Provide a gap between the two funnels to allow for air to be introduced to the particle stream.