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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ASTM C – Free Download PDF

A number in parentheses indicates the year of last reapproval. Follow all requirements of the supplement. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.

Take care to avoid segregation in large containers of abrading media. For the ruggedness test, flint glass tube inside diameters of 4.

Observe the abrasion pattern of the glass plate through the edge of the plate. For monolithic refractory specimens, test the surface that is, top free face or bottom mold face that most accurately reflects the actual field situation. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn.

This is done by using a brass rod, 4. C70 values from the two systems may c7704 in non-conformance with the standard. One by mm 4 by 4 in. This test method can also be applied to castable refractories see V704 Dimensions, Practice C and Practice C and plastic refractories see Practice C Use one gauge as the primary gauge; all pressure measurements are to be taken from that gauge.

asmt Determine the volume of the specimens by measurement of length, width, and thickness to the nearest 0. In this case, dry the sample as in 8. Cleanly cut astn ends of the glass tube and do not fire polish them.


Check the air pressure before and after the abrading media is run through the system. Glass tube lots purchased as 7 mm outside diameter tube with a nominal 1. 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. Consultation with an industrial professional in compressed air systems is recommended in setting up the air supply for the abrasion tester.

Splitting possibly with use of a riffler or another similar procedure and reblending may c740 necessary to obtain a grit sample conforming to the required screen analysis. Check the inside diameter periodically for wear Fig. This can be achieved by using a second glass plate under the calibration plate as a spacer, or by adjusting the height of the sample holding platform. Turn on the air pressure. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Take the statistically significant effect of this small tube inside diameter 7c04 into consideration. Highly Abrasion Resistant Awtm S1. If the vacuum gauge does not read a minimum vacuum of mm 15 in. This test method can also be applied to castable refractories see Metric Dimensions, Practice C and Practice C and plastic refractories see Practice C Additionally, calibrate the abrasion tester any c074 an abnormality occurs in the test such as erratic results or a hole being worn in the glass nozzle.

An acceptable test chamber can be made from a weatherproof electrical switch box. When aetm with the abrasion tester, ensure that the feed mechanism delivers the abrading media in the specified time of 6 15 s. Size px x x x x Ensure that the air supply is able to supply an adequate volume x704 air such that the air pressure does not fluctuate during the test run. Used for weighing the abrading wstm and test specimens.


Do not completely fill or flood the gun supply funnel with material. The glass tube is then positioned at a distance of 2 mm [0. We are a non-profit group that run this website to share documents. Individually measure and choose all nozzle tubes to conform to a specified 4. The use of appropriate drying equipment is necessary in order to achieve consistent results.

Ideal glass tube 3 Detailed prints for the construction of the test chamber are available at a nominal cost from ASTM International Headquarters. 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. Maintain the astj 8 in.

Permission rights to c04 the standard may also be secured from the ASTM website www. Ensure that the main supply funnel has sufficient volume to hold the required g of silicon carbide abrading medium.

ASTM C-704

Work Item s – proposed revisions of this standard. 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. Included are the abrading media weight gramsspecimen weight gramsspecimen weight loss due to abrasion gramsand the resultant volume loss cubic centimeters. The abraded area is to be uniform and symmetrical.

Typically a to g capacity balance is required. Report the results as a hole through the specimen. Check the length and diameter of each tube prior to use. Dial to have a qstm band for knife-edged pointer tip reflection to prevent parallax error. For the ruggedness test, air pressure was maintained at values of kPa [64 psi] and kPa [66 psi] by the use of a calibrated master series pressure gauge.