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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Position the specimen such that the abrasion pattern is centered on the surface of the plate. Size the orifice so that g of the abrading media flows through the funnel in 6 15 s. 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.
Five different types of refractories, along with a float glass plate standard, were tested for abrasion resistance by each laboratory. 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.
Several values are stated only in SI units as a matter of convention and to permit comparison of results. This is done by using a brass rod, 4. Your comments will receive careful consideration at a meeting of the responsible technical committee,1 which you may attend. Glass tube lots purchased as 7 mm outside diameter tube with a nominal 1.
Individually measure and choose all nozzle tubes to conform to a specified 4. Work Item s – proposed revisions of this standard.
Cleanly cut the ends of the glass tube and do not fire polish them. Regulate the air pressure to kPa [65 psi].
Take the statistically significant effect of this small air pressure variation into consideration and use only gauges as specified in 6. The glass tube atm placed through the sleeve in the tubing nut, compressing the grommet within the nut. Fire specimens to the anticipated service temperature or a higher temperature, if specified, in accordance with Practice C Link to Active This link will always route to the current Active version of the standard.
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. Flare the tubing at one end to sit snugly inside a 9.
The minimum recommended diameter for dial type is mm [4. Normally, the free surface is the most appropriate test surface. Ideal glass tube 3 Detailed prints for the construction of the test chamber are available at a nominal cost from ASTM International Headquarters.
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. Verify the sizing of the grit by either user confirmation of the screen analysis or a certificate of conformance from the supplier.
Due to small irregularities normally present in the shape of the glass plates, use of a water immersion method is suggested.
Combining values from the two systems may result in nonconformance with the standard. The glass plate may be placed in the abrasion tester with either face up.
Current edition approved March 1, Refer to Table 2 for the acceptable precision statistics for float glass 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.
Observe the abrasion pattern of the glass plate through the edge of the plate. Please copy and paste this embed script to where you want to embed Embed Script. Do not completely fill or flood the gun supply funnel with material. Highly Abrasion Resistant Materials S1. Combining values from the two systems may result in non-conformance with the standard.
If the vacuum gauge does not show a minimum vacuum of mm 15 in. Used for weighing the abrading media and test specimens. Air pressure as specified in this test method is kPa [65 psi] measured by a gauge capable to 6 6. Only the most abrasion resistant materials can be 25 mm [1 in. We need your help to maintenance this website.
ASTM C – Free Download PDF
Report the results as a hole through the specimen. 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 axtm careful consideration at a meeting of the responsible technical committee, which you may attend. Connect the lower funnel to the feed inlet of the blast gun with clear flexible poly vinyl chloride tubing with an inside diameter of 6. Several values are stated only in SI units as a matter of convention and to permit comparison of results. If the readings on the gauges differ by more than 6.