This standard is issued under the fixed designation D ; the number 1 This practice is under the jurisdiction of ASTM Committee D11 on. Buy ASTM D Standard Practice for Rubber—Preparation of Pieces for Test Purposes from Products from SAI Global. Buy ASTM D PRACTICE FOR RUBBER – PREPARATION OF PIECES FOR TEST PURPOSES FROM PRODUCTS from SAI.
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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.
The successive cuts should be progressively thinner to avoid over-heating. Clamping devices should be available to secure the rubber. Adjustments should be available to vary the thickness of cut, and feed rollers should be provided to transport the material past the knife.
Provision should be made for continuous sharpening of the cutting edge. The abrasive bands should be 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 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.
A number in parentheses indicates the year of last reapproval. Equipment should be provided for slow feeding of the material to the abrasive band and for securing the material without excessive deformation Note 3. Current edition approved March 30, Such pieces are used as a source from which specimens are obtained for testing. If a liquid is used, place the rubber so as to permit free evaporation of the liquid.
Preparation of Pieces 7. An adjustable slow-feed mechanism is? Procedures in this section describe the preparation of pieces from vulcanizates that are too thick, have uneven surfaces, or contain textiles. NOTE 1—For production quality control, testing within 1 to 6 h after vulcanization may be necessary to monitor plant operation.
The sheets shall have one of the following thicknesses unless another thickness is technically necessary: The pieces shall be prepared in accordance with Section 7. If this is not possible, use commercial isooctane. Last previous edition D — In asstm the depth of cut should not exceed approximately 0. It is important that the wheel should run true, without vibration, and that the abrasive surface based on aluminum oxide or silicon carbide is true and sharp.
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.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, asfm you may attend.
ASTM D e1. Originally published as D — 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. The knife should be lubricated with a mild soap solution to ease the cutting operation. d31883
ASTM D3183 – 10(2015)
Take care to avoid excessive stretching of the rubber during the separation, by aatm a little at a time while the rubber is gripped near the point of separation. 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.
Allow time for the complete evaporation of the liquid before the specimens are cut and tested. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
NOTE 3—Grit sizes of 0. This standard has been approved for use by agencies of the Department of Defense. The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. NOTE 2—Wheels of to mm 5 to 6-in. 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.