The Remanufacturing Process
Before the procedure, shoes are checked for the following flaws: Flared roller ends, cam ends, torch damage, bent webs and broken welds. If any of these conditions are present, the shoes are rejected for processing. Shoes suitable for remanufacturing are then placed onto a conveyor system and sent through a 35-foot stainless steel washer where the water temperature is 200 degrees. This ensures all shoes are completely clean before they continue to be processed.
The spent friction is removed using state of the art de-lining equipment, punching out the rivets four at a time. These machines are calibrated to remove the lining without causing table damage. Upon de-lining, the shoes are then inspected for any severe table damage where the coining process could not correct the damage. (These would be considered rejects.) All good shoes are then placed on conveyors for further processing.
Shoes are automatically transferred by conveyor to one of our 24 cubic foot shot blasters. All rust and slag is removed ensuring a proper foundation for our painting process. Shoes are then transferred to one of our 1,000 ton coining presses.
All shoes processed at GB&C Inc. are coined in one of our 1,000 ton coining presses ensuring the shoe table radius is restored to original manufacturing tolerances. This provides a solid foundation for the friction material preventing cracking and uneven lining wear due to bent and out of spec tables. It also eliminates gaps between the shoe table and friction material which helps to prevent water and chemicals from getting behind the friction causing rust jacking.
All shoes are measured for roller end and anchor end size using a go/no-go gauge to verify if they are within acceptable tolerance limits. All shoes are inspected for stretch using a stretch gauge to determine if the pitch point between the cam end and the anchor end is within acceptable tolerance. All shoes are also inspected for elongated holes using a go/no-go gauge. Shoes are visually inspected for excessive table wear due to rust and rejected when they do not meet our criteria. After this check, the shoe moves on to the Gorilla TUFF COAT.
Shoes are riveted using a branded 1/4” and 10-9 length rivet supplied for consistent quality and proper roll over. Every 50th shoe is torque tested at a minimum 32 inch Ibs per rivet. If any shoe fails the torque test, all shoes since the last successful torque test are quarantined and rechecked or relined before the shoe can be passed as part of our rigorous quality control procedures.
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