ASTM D3183 PDF

Mezinos D Standard Practice for Rubber—Preparation of Pieces for Test Purposes from Products The buffing may be either against the drum, against one of the pulleys, or against the taut band between the pulleys. Do not carry out buffing beyond the point where unevenness of thickness has been eliminated. Uneveness of surface may result from contact with fabric components, cutting techniques, or other reasons. For removal of greater thicknesses of rubber, use the cutting techniques indicated in 7. Some skiving machines can separate plies of rubber as in belts, hose, and tires see 7. Suitable means should be provided for securing the rubber to prevent excessive deformation and for controlled traversing of the rubber pass the abrasive wheel Note 2.

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A superscript epsilon e indicates an editorial change since the last revision or reapproval. The machine consists of a motor- or hand-driven disk cutter of suitable diameter with a movable cutting table that transports the sample to the cutting edge. NOTE 1—For production quality control, testing within 1 to 6 h after vulcanization may be necessary to monitor plant operation. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Preparation of Pieces 7. Some skiving machines can separate plies of rubber as in belts, hose, and tires see 7. 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.

Do not carry out buffing beyond the point where unevenness of thickness has been eliminated. A number in parentheses indicates the year of last reapproval. Procedures in this section describe the preparation of pieces from vulcanizates that are too thick, have uneven surfaces, or contain textiles. Allow time for the complete evaporation of the liquid before the specimens are cut and tested. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters.

Procedures are given for preparing pieces suitable for preparing specimens of the product. ASTM D e1. The knife should be lubricated with a mild soap solution to ease the cutting operation.

NOTE 2—Wheels of to mm 5 to 6-in. 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.

If this is not possible, use commercial isooctane. In operation the depth of cut should not exceed approximately 0. Take care to avoid excessive stretching of the rubber during the separation, by separating a little at a time while the rubber is gripped near the point of separation. Equipment should be provided for slow feeding of the asmt to the abrasive band and for securing the material without excessive deformation Note 3.

The grinder should be equipped with a slow-feed mechanism so that very light cuts may be made to avoid over-heating of the rubber. An adjustable slow-feed mechanism is? The pieces shall be prepared in accordance with Section 7. Last previous edition D — This standard has been approved for use by agencies of the Department of Wstm. Suitable means should be provided for securing the rubber to prevent excessive deformation and for controlled traversing of the rubber pass the abrasive wheel Note 2.

If a liquid is used, place the rubber so as to permit free evaporation of the liquid. Adjustments should be available to vary the thickness of cut, and feed rollers should be provided to transport the material past the knife.

The atm cuts should be progressively thinner to avoid over-heating. Uneveness of surface may result from contact with fabric components, cutting techniques, or other reasons. Such pieces are used as a source from which specimens are obtained for testing. For removal of greater thicknesses of rubber, use the cutting techniques indicated in 7.

Clamping devices should be available to secure the rubber. In operation, cuts removing several tenths of a millimetre of rubber are practicable as the heat build up is much lower than with the method of 7. Current edition approved March 30, The sheets shall be vulcanized in accordance with Practice D and shall have an equivalent state of vulcanization judged from such properties as can be determined on the product.

The sheets shall have one of the following thicknesses unless another thickness is technically necessary: It is important that the wheel should run true, without vibration, and that the abrasive surface based ashm aluminum oxide or silicon carbide is true and sharp.

The abrasive bands should sstm of textile or paper, or a combination of the two, with the abradant based on aluminum oxide or silicon carbide bonded to its surface with a resin unaffected by water. The buffing may be either against the drum, against one of the pulleys, or against the taut band between the pulleys. TOP Related Posts.

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ASTM D3183 PDF

A superscript epsilon e indicates an editorial change since the last revision or reapproval. The machine consists of a motor- or hand-driven disk cutter of suitable diameter with a movable cutting table that transports the sample to the cutting edge. NOTE 1—For production quality control, testing within 1 to 6 h after vulcanization may be necessary to monitor plant operation. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Preparation of Pieces 7. Some skiving machines can separate plies of rubber as in belts, hose, and tires see 7.

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