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 use of appropriate drying equipment is necessary in order to achieve consistent results. Regulate the air pressure to the pressure indicated by the most recent calibration of the abrasion tester.
Combining values from the two systems may result in nonconformance with the standard. All specimens were 4. Combining values from the two systems may result in non-conformance with the standard. Precision and Bias 5 The wstm stated in each system may not be exact equivalents; therefore, use each system independently of c740 other.
The five types of refractories were a high-alumina brick, a silica brick, an abrasion-resistant castable, a super-duty fire brick, and a conventional high-cement castable. Check the inside diameter periodically for wear Fig. We need your help to maintenance this website. F704 test method can also be applied to castable refractories see Metric Dimensions, Practice C and Practice C and plastic refractories see Practice C Provide an air gap between the orifice and the gun supply funnel to allow secondary air to enter with the abrading media.
Highly Abrasion Resistant Materials S1. The glass tube is placed through the sleeve in the tubing nut, compressing the grommet within the nut. Please fill this form, we will try to respond as soon as possible.
Historical Version s – view previous versions of standard. Verify the sizing of the grit by either user confirmation of the screen analysis or a certificate of conformance from the supplier. Determine the volume of the specimens by measurement of length, width, and thickness to the nearest 0.
Position the specimen such that the abrasion pattern is centered on the surface of the plate. Dial to have a mirrored band for knife-edged pointer tip reflection to prevent parallax error. 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. Several values are stated only in SI units as a matter of convention and to permit comparison of results.
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. Cleanly cut the ends of the glass tube and do not fire polish them. Link to Active This link will always route to the current Active version of the standard. 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.
Included are the abrading media weight gramsspecimen weight gramsspecimen weight loss due to abrasion gramsand the resultant volume loss cubic centimeters. Inspect the air generator nozzle for wear before any test series and replace as necessary. 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 test method can also be applied to castable refractories see Metric Dimensions, Practice C and Practice C and plastic refractories see Practice C It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Check the length and diameter of each tube prior to use. The second gauge is used only for verification. Fire specimens to the anticipated service temperature or a higher temperature, if specified, in accordance with Practice C Equip the gun supply funnel with a 4. The values stated in each system may not be exact equivalents; therefore, use each system independently of the other.
Observe the abrasion pattern of the glass plate through the edge of the plate. Two test results that do not differ by more than the repeatability interval shall be considered to be from the same population; conversely, two test results that do differ by more than the repeatability interval shall be considered to be from different populations. When the Carco Blast Gun is used, this will replace the steel nozzle supplied with the gun.
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ASTM C – Free Download PDF
The minimum recommended diameter for dial type is mm [4. In this case, dry the sample as in 8.
Confirm the density of the float glass plates by testing one plate in each batch. We are a non-profit group that run this website to aastm documents.
If the vacuum gauge does not show a minimum vacuum of mm 15 in. 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.
The glass tube is then positioned at a distance of 2 mm [0.
For brick samples test an unbranded surface. This sleeve is glued or soldered in place inside the 9.
This is done by using a awtm rod, 4. Provide a gap between the two funnels to allow for air to be introduced to the particle stream. The glass plate may be placed in the abrasion tester with either face up. The nut is attached to the gun. Use one gauge as the primary gauge; all pressure measurements are to be taken from that gauge.