Heel Fatigue Strength Test

Content Description: the instrument First, the heel bottom and an iron plate are tightly fixed together by self tapping screws to form a sample combination, and then the sample combination is fixed on the fixture of the testing machine Heel It will not fall off, which is more conducive to testing the performance of the heel. The fixture used in this method is very firm, and the heel will not move any more, which ensures the reliability of the test results.

Cooperation mode: Technology transfer

Unit name: technical service center of Putian entry exit inspection and Quarantine Bureau

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When inlay occurs in the embedded serrated integral cylinder, the inlay occurs in the first group and the third group when the tooth surface angle is 90 degrees and the five segment cylinder inlay occurs in the first group and the third group, and the fourth segment cylinder inlay occurs in the second group. The first row of teeth of this group of inlaid rack has been damaged by observing with a 60 times magnifying glass.

If the inlay is caused by cylinder rack damage, other technical measures such as adjusting the depth of brush insertion into cylinder, increasing the speed of brush and increasing the cleaning time of brush can not solve the problem of inlay. Only by removing the old rack and replacing the new rack can we achieve the purpose.

Once the sharpness of the cylinder rack deteriorates or the cylinder inlay caused by the damage of the rack teeth has a great impact on the yarn quality, which shows that under the same noil spacing and cylinder carding spacing, the noil rate increases by about 0.5%. The production practice shows that the neps and short fiber ratio of combed sliver increase, and the yarn quality deteriorates rapidly.

When the conventional technical measures for cylinder inlay treatment are not effective, do not adjust the depth of brush brown hair inserted into the cylinder in a hurry, which is not conducive to the treatment of cylinder inlay, but will aggravate the damage of brush brown hair and shorten the service life of brush. If the brush is used properly, the imported brush can be used for 6 ~ 7 years, and the domestic brush can be used for 4 ~ 5 years.

When the brush is guided, the depth of the brush inserted into the cylinder is increased by 1 mm. This technology can effectively and thoroughly remove the inlays in the cylinder teeth. Now we have replaced all domestic brushes, which is mainly due to the poor elasticity of the domestic brush brown hair. After a period of use, the brown hair of the brush will dump to one side, greatly reducing the cleaning efficiency of the brush on the cylinder.