found in natural rubber. As such the risk of type 1 allergy is eliminated • However, many of the accelerators used in natural rubber are also used to vulcanise synthetic polyisoprene • These traditional accelerators can leave residue in the rubber that can give rise to Type 4 allergy and generate carcinogenic nitrosamines
tipped pcd inserts with brazed pcd cutting edges are used for machining non-ferrous hard metals such as aluminum alloy, tungsten carbide, copper, zinc. the working tips of pcd inserts are made by pure polycrystalline diamond, pcd tipped inserts are mainly for cnc continuous turning and milling automobile engine block, cylinder head, transmission parts, gearbox.