Tire Repairing and Vulcanizing

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William Hood Dunwoody Industrial Institute, 1918 - 98 pàgines
 

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Pàgina 67 - Gum will flow at 5 Ibs. steam pressure. The time used bringing the heat up is to flow the gum or cushion properly and the curing time is for setting and pressure. TUBES. Cure gray tube for hole repairs 15 to 20 minutes at 50 Ibs. Cure red tubes slightly less than gray tubes. Splices and valve pads take about the same time.
Pàgina 50 - Cut away the bead cover on both sides for a complete outer cord and inner cord section, allowing two inches from where the cords come out. 3. Pull the staples on both sides, if a QD 4. Split the inner cords at turn on' staples and layback all cords so that the broken outer cords are exposed and clear to the staples. 5. Split the outer cords at the staples and pull same. Outer cords are taken out after the side wall has been cut off or buffed sufficiently to clear the cords to be removed and the bead...
Pàgina 7 - ... following is a list of materials commonly used in compounding : ALUMINUM FLAKE: An inert heat resistant which toughens the rubber. ASBESTOS: Low conductivity of heat makes it valuable in steam packings. Useful in fireproof materials. ASPHALTUM : Softens compound, retards blooming, limits oxidation, and increases density. ATMIDO: Snow white filler, low specifIc gravity, indifferent to acids, used in small portions to increase strength and resilency in soft rubber goods. Also used in large portions...
Pàgina 8 - Sometimes called black lead, more non-combustible than most ingredients, and therefore, used in rubber compounding to make articles capable of withstanding great heat. Inert.
Pàgina 8 - Used in preventing rubber surfaces from sticking together during manipulation or vulcanization. It is also used for dusting moulds to prevent gum from sticking to metal.
Pàgina 54 - If you are using a retread band the inside should be cemented in the same manner as the tire and dried likewise.

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