The invention discloses a clamp for inhibiting
initiation and expansion of
grinding and
polishing cracks of
a diamond film and a use method. The clamp comprises a base, a water tank, water tank drainage holes, a base limiting ring, a tensioning ring, a buffering
cushion and a tensioning bolt, the upper top surface of the base of the clamp is a load applying surface, the lower bottom surface is a surface adhered with the
diamond film after heating, stress is prefabricated between the surface and the
diamond film through cooling, the base limiting ring is placed outside the base, the water tank is placed at the top of the base limiting ring, a
water source is provided for a gap between the base and the base limiting ring through the water tank drainage holes evenly distributed in the bottom of the water tank, the buffering
cushion is placed on the bottom surface of the base, and the tensioning ring covers the outer edge of the buffering
cushion. After the flattening treatment is completed, rapidly heating treatment is directly carried out on the whole clamp until a binder loses
efficacy, and the leveling treatment process is completed. According to the clamp for inhibiting
initiation and expansion of the
grinding and
polishing cracks of the
diamond film and the use method, the whole film rate and the
machining efficiency of the diamond film are improved, the
powder blocking problem is solved, and environmental
pollution is reduced; and the method can further be used for flattening treatment of the diamond film with the cracks, crack expansion is inhibited, and the
usable area of the diamond film is increased.