2013-01-14 by seoer10
Superhard abrasive superhard abrasive employing caused diamond or cubic boron nitride abrasive made of superhard abrasive, system abrasive another big series. Superhard abrasive having the following characteristics with the labeled: concentration, binding agent, particle size, velcro disc,abrasive grades, the thickness of the abrasive grain layer, pore size, total thickness, diameter, shape code The above features and markings are in accordance with the 1998 National abrasives standardization technology Committee provisions for each standard in the preparation of the China Machinery Industry Standard, published by the China Press, about concentration: the Bonded Abrasives organizational No. roughly the same, but in superhard abrasive flag should be marked. The so-called concentration is superhard abrasive the CM3 volume contained within the number of grams of super abrasive% number the concentration code as follows: Code abrasive content (G/CM3) of concentration 250.2225% 500.4450% 750.6675% 1000.88100% 1501.32150% About binding agents: refers to the type of binding agent used in the superhard abrasive. The binders Code as follows: the binder binding agent codenamed resin binder B metal binders M ceramic binder V.Bonded abrasives
keywords:grinding disc
2013-01-15 by seoer10
MoS2 soft coating self-lubricating tool. A soft coating of four kinds of self-lubricating tool in the study design, pure MoS2 coating are self-lubricating cutter tool Unbalanced Magnetron Sputtering MoS2/Ti coated self-lubricating, self-lubricating MoS2/Zr coating the tool and MoS2/Cr coating self-lubricating tool (Figure 5). When the matrix material for YT15 when the residual thermal stress analysis shows, the difference in thermal expansion coefficient between the coating and the substrate and deposition temperature is the main factors to affect the size of the residual thermal stress of the coating system, the addition of the transition layer helps reduce the residual thermal stress reduce the interface stress gradient. MoS2/Zr coating residual thermal stress self-lubrication tool a much lower compared with pure MoS2 coatings as well as the of other metalliferous transition layer MoS2 coating. The friction test, the friction coefficient and the wear amount of the MoS2/Zr than pure MoS2 coatings were significantly lower. The analysis showed that the morphology and composition of wear on the friction surface of the ball, MoS2/Zr "soft" coating materials and lubricating film formed between the surface of the friction material transfer is one of the key factors that affect the friction and wear properties. Since the friction pairs the presence of the transfer film, coating, and friction into the "inner" friction between the coating and the transfer film on the friction material, thereby reducing the coefficient of friction of the friction process, to improve the wear resistance of the material.non woven abrasive, Figure 6 is the soft coating tool and cutting tool hardened steel when MoS2/Zr flank wear amount of contrast. SEM images and EDS before MoS2/Zr soft coating tool flank wear. Be seen, the coating of the tool rake face slightly worn, EDS analysis showed that the tool rake face containing a large amount of Mo, S, Zr element. Further, by cutting test was found, whether it is in a complete state of the lubricating film or boundary lubrication state, since the surface "soft" the presence of the coating, the friction and the coefficient of friction of the coated tool decreased; MoS2/Zr "soft" coating The layer acts as a lubricant between the tool and chip, thereby reducing the wear of the tool .abrasive manufacture
keywords:grinding disc
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