The results showed that the appropriate time to rotate it so that the heat (Tf) is equal to 5 seconds without pulling strength values equal to the appropriate pressure MPa 668.33 finally caused friction when rotated. (Pf) is equal to the value of 30 MPa tensile strength equal to 658.33 MPa and rotational time to heat (Tf) is equal to 3 and 4 5 6 7 8 9 10. Second, the ability of the average impact resistance test 428.625 J/cm2 is equal to the pressure finally caused friction when rotated (Pf) Given a value for probability, impact resistance of samples on average equal to J/cm2 38.875.
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