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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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 wstm.

ASTM C – Free Download PDF

Affix the gauges to the blast gun as shown in Fig. For brick samples test an unbranded surface. The abraded area is to be uniform and symmetrical. Attach the blast gun to the top of the chamber through the hole in the top and secure it in place with a nut. Five different types of refractories, along with a float glass plate standard, were tested for abrasion resistance by each laboratory.

When connected with the abrasion tester, ensure that the feed mechanism delivers the abrading media in the specified time of 6 15 s. Observe the abrasion pattern of the glass plate through the edge of the plate. Turn on the air pressure. If the vacuum gauge does not read a minimum vacuum of mm 15 in.

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ASTM C-704

astj Size px x x x x If the air supply is also connected to other equipment, ensure that the air supply is able to maintain consistent pressure throughout the test run, even when other equipment connected to the supply is operated. The minimum recommended diameter for dial type is mm [4. When the Carco Blast Gun is used, this will replace the steel nozzle supplied with the gun.

Other sand blast gun models or types may affect test results. The glass tube is placed through the sleeve in the tubing nut, compressing the grommet within the nut. Work Item s – proposed revisions of this standard. Due to small irregularities normally present in the shape of the glass plates, use of a water immersion xstm is suggested. Included are the abrading media weight gramsspecimen weight gramsspecimen weight loss due to abrasion grams atsm, and the resultant volume loss cubic centimeters.

This standard is subject to revision at c074 time by the responsible technical committee and must be reviewed every five years and if not revised, either reapproved or withdrawn. Replace any parts as necessary and calibrate the abrasion tester in accordance with Section 7 before proceeding. Provide a gap between the two funnels to allow for air to be introduced to the particle stream.

This test method can also be applied to castable refractories see Metric Dimensions, Practice C and Practice C and plastic refractories see Practice C Size the orifice so that g of the abrading media flows through the funnel in 6 15 s. Significance and Use d704. The values stated in each system may not be exact equivalents; therefore, use each system independently of the other.

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One by mm 4 by 4 in. Ensure the gun is perpendicular to the specimen. Do not completely fill or flood the gun supply funnel with material. This sleeve is glued or soldered in place inside aetm 9.

Precision and Bias 5 The values stated in each system may not be exact equivalents; therefore, use each system independently of the other. Please help wstm to share our service with your friends. The diameter may be checked by the use of a gage consisting of a tapered stainless steel rod with the 4.

Check the air pressure before and after the abrading media is run through the system. Splitting possibly with use of a riffler or another similar procedure and reblending may be necessary to c7704 a grit sample conforming to the required screen analysis. Normally, the free surface is the most appropriate test surface.

Calculation and Report 9. The glass plate may be placed in the abrasion tester with either face up. Alternate dust handling systems such as venting to the outside are acceptable as long as the chamber pressure is maintained at adtm desired level.

Used for weighing the abrading media and test specimens.