ASTM C704 PDF

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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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Interferences Factors known to Affect Results 5. Glass tube lots purchased as 7 mm outside diameter tube with a nominal 1. Check the length and diameter of each tube prior to use.

It is the asgm of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Ideal glass tube 3 Detailed prints for the construction of the test chamber are available at a nominal cost from ASTM International Headquarters.

Significance and Use 4. The glass tube is then positioned at a 7c04 of 2 mm [0. Follow all requirements of the supplement. 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 minimum atm diameter for dial type is mm [4. The glass tube is placed through the sleeve in the tubing nut, compressing the grommet within the nut. Combining values from the two systems may result in non-conformance with the standard.

ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

The use of appropriate drying equipment is necessary in order to achieve consistent results. Provide an orifice approximately 4.

ASTM C-704

Thank you for interesting in our services. Take care to avoid segregation in large containers of abrading media.

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Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Precision and Bias 5 Several values are stated only in SI units as a matter of convention and to permit astn of results. If the samples are allowed to sit before being weighed, they may pick up moisture resulting in an inaccurate test result. Normally, the free surface is the most appropriate test surface.

Please help us to share our service with your friends. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Five different types of refractories, along with a float glass plate standard, were tested for abrasion resistance by each laboratory. After the air pressure to the gun and the chamber pressure have been adjusted, plug the abrading media feed line by closing the opening of the lower funnel.

Refer to Table 2 for the acceptable precision statistics for float glass plate. Cleanly cut the ends of the glass x704 and do not fire polish them. Regulate the air pressure to kPa [65 psi].

ASTM C – Free Download PDF

A number in parentheses indicates the year of last reapproval. Attach the blast gun to the top of the chamber through the hole in the top and secure it in place with a nut.

The values stated in each system may not be exact equivalents; therefore, use each system independently of the other. Splitting possibly with use of a riffler or another similar procedure and reblending may be necessary to obtain a grit sample conforming to the required screen analysis.

Check the inside diameter periodically for wear Fig. Calculation and Report 9. 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. Regulate the air pressure to the pressure indicated by the most recent calibration of the abrasion tester.

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Affix the gauges to the blast gun as shown in Fig. Determine the volume of the specimens by measurement of length, width, and thickness to the nearest 0. Use one gauge as the primary gauge; all pressure measurements are to be taken from that gauge. Consultation with an industrial professional in compressed air systems is recommended in setting up the air supply for the abrasion tester. Maintain the mm 8 in.

Flare the tubing at one end to sit snugly inside a 9. Ensure that there are not any flow obstructions between the gauge and the gun. The values stated in each system may not be exact equivalents; therefore, use each system independently of the other.

Permission rights to photocopy the standard may also be secured from the ASTM website www. Connect the vacuum gauge to a T-fitting in the abrasive supply line. 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. 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.

If the readings on the gauges differ by more than 6.

Included are the abrading media weight gramsspecimen weight gramsspecimen weight loss due to abrasion gramsand the resultant volume loss cubic centimeters. Other sand blast gun models or types may affect test results. We need your help to maintenance this website. We need c70 help! Only the most abrasion resistant materials can be 25 mm [1 in.

Observe the abrasion pattern of the glass plate through the edge of the plate.