Metal Finishing Guide Book


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Page 41 of 843

Fig. 1. Sisal buffs. may be used wet or dry or with wax or grease lubricants. Buffs made of synthetics are usually operated at slow speeds, typically 2,500 sfpm, to prevent melting and streaking surfaces. BUFF TREATMENTS Treatments may be applied to fabrics (mill treatment) or to the buff after assembly (dip treatment). Buff fabrics are frequently hardened and stiffened to promote faster cutting, softened for additional flexibility to conform to contours, strengthened for longer buff life, or lubricated to prevent burning. Buff fabrics may also be treated to provide improved adhesion of buffing compound, to abrade for heavier cut, or to flameproof and make fire resistant. Treatments must be applied evenly and uniformly to avoid creating hard spots that cause uneven buffing. The treatment must not deteriorate with buff age. Unsuccessful treatments weaken the cloth and decrease buff life. CONVENTIONAL, FULL-DISK BUFF DESIGNS Unsewn Buffs Conventional, full-disk buffs are made with die-cut cloth disks. Unsewn, conven38

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