The tooth size of the synchronous belt is measured using a projector, and the width is measured using precision. 0.02mm caliper.
The length of the section of the synchronous belt is determined by the synchronous belt length measuring machine, and the lateral measurement method is carried out according to GB 11616.
The tensile strength and reference force elongation of the synchronous belt were tested with non-ring samples according to GB10716.
If the sample width is less than or equal to 25.4 mm, the sample width is equal to the bandwidth.
If the tensile test of a non-ring specimen is not possible, the ring specimen shall be tested according to the above criteria. The test result shall be divided by 2 and indicated in the test report.
The tooth shear strength of the synchronous belt shall be carried out in accordance with GB10717.
Inspection rule
The synchronous tape is checked and accepted by the quality inspection department of the production unit.
The synchronous belt shall be visually inspected article by article in accordance with this standard.
The number of each type of synchronous belt is not more than 2 000 pieces.
Each batch of synchronization tape must be taken 3 for size and physical and mechanical properties of the inspection. When the weekly production is less than 2 000, check at least once a week.
If there are unqualified items in the test, double samples should be taken from the batch of synchronous belt for unqualified items. If there is still a nonconformity in the reinspection project, the batch of products is nonconforming.