2. Buy out rubber, roll material form, calculate partition weight according to abrasive, use board shearing machine to divide rubber coil material into small plate of specified weight.
3. The rubber was vulcanized by grinding tools on the hydraulic press (flat press) at a temperature of 170-180, and the curing time was determined according to the actual situation, about 200S. Rubber stripe abrasives are designed to keep flashes to ensure that excess materials flow into the flange cavity.
4, hand to fly, tool small blade.
5，Pickling: the purpose of pickling, surface hardening, preventing glue strips from thickening after a period of time, pickling time the first pool 6Minand the second pool 4Min. divided into two steps: soak-transfer into a rotary barrel, dip the drum into acid lotion, Turn the drum. (ingredients: one cup of sodium hydroxide hydrochloric acid, one cup of high efficiency polysodium chloride mixture)
6, drying: pour the rubber strip into a device with a drum, blow and turn the drum to dry it.
7, spraying: the rubber strip is driven by two rollers into the impact chamber. The spraying material is graphite.
8, split: rubber strip driven by two rollers through two opposite round blade, blade spacing 0.05-0.1.
9. Detection techniques: First, look, natural rubber is visually black, and synthetic rubber is black or a little white. Second, grab, pull or roll the tape to squeeze, then let go of the resilience of the tape, if the deformation is serious, it is defective. Third, see whether the edge is straight, if the edge above the impurity or division is not good, scratch will be waterline, also unqualified. In addition, most of today's wipers spray graphies on rubber strips, and if they feel thick or easy to fall off, they don't qualify.