With the progress of the exterior project technology that makes at the mould

Mould material is the foundation of mould industry, but even if the requirement of the higher integral performance that new-style mould material still satisfies a mould hard, use exterior project technology to be able to make up for the inadequacy of mould material on certain level. The exterior project technology that can be used at the mould to make is very extensive, the appearance that includes a tradition already quenchs technology of technology, hot enlarge ooze, v technology is mixed eletroplate hard chromic skill, include nearly 20 years to develop deposit of the technology of laser surface aggrandizement that rise, physics gas phase quickly again technology of solder of technology of deposit of technology, chemical gas phase, ionic infuse technology, thermal spraying technology, hot gush, compound eletroplate technology of plating of technology, compound brush and chemical plating technology. And the development of the exterior project technology that the progress of technology of project of rare earth surface and technology of project of accept rice surface is sure to drive a mould to make further. Introduce technology of project of rare earth surface and technology of project of accept rice surface only here. 1, rare-earth element is joined to use solder of gush of thermo-chemical treatment, spray, gas phase normally in technology of project of surface of technology of project of rare earth surface the method such as Fu of besmear of deposit, laser, electrodeposit. (1) rare-earth element basically is behaved to the influence of thermo-chemical treatment to have the distinct effect that urge ooze, optimize process greatly; Mix a few rare earth compound, ooze layer deepness can increase apparently, improve ooze layer organization and performance. The wearability that improves mould antrum appearance thereby, fight high temperature oxidisability fight concussion abrasiveness. (2) use thermal spraying and gush solder technology, add rare-earth element coating, can acquire good organization and property, make model antrum surface has taller hardness and wearability. (3) closely related the actor bad of function of layer of film of deposit of physical gas phase and film and size of matrix union strength, the affiliation of rare-earth element is helpful for improving the combinative strength of film and matrix, velar layer surface sends density to increase apparently. In the meantime, join rare-earth element to be able to make function of velar layer wear-resisting also gets clear improvement, apply at what the mould behaves to exceed hard TiN film for example (add rare-earth element) , make mould antrum surface presents a tall hardness, low coefficient of friction and good chemical stability, improved the service life of the mould. (4) the coat that contains rare earth compound, can raise mould metal stuff to express the absorptivity that faces laser irradiation energy substantially, to reducing specific power consumption and manufacturing cost, and technology of project of promotion laser surface has important sense. After rare earth coat is handled via laser, organization and function produce clear improvement, the hardness of coat and wearability rise significantly, wearability is 45 steel move qualitative 5 ～ 6 times. Undertake to adding the thermal spraying layer of CeO laser weighs dissolve, study the microstructure that discovers alloy changes a layer is changed apparently, grain gets refining. Laser remelting joins the gush solder alloy after rare earth, material of rare earth chemical combination nods amid dispersion aggrandizement, reduce crystal boundary energy, the corrosion resistance that raises crystal boundary can, the wearability of mould antrum surface also increases greatly, some document report rare-earth element raised wearability to amount to 1 ～ 4 times. Additional, have research discovery, join the effect excel that mixes rare earth compound onefold rare earth compound. (5) add rare-earth element film can use brush plating, eletroplate wait for electrodeposit method. Acid of nitrogen of rare earth pleasant cooperates the affiliation of content to make film prevents oxygen passivation life to rise apparently; Rare-earth element has catalysis the action of reductive SO2, can restrain the oxidation of the MoS in film of Ni-Cu-P/MoS brush plating, improved the anti-friction performance of film apparently, rose to fight cankerous ability, make the wear-resisting life of mould antrum surface lengthens nearly 5 times. 2, project of surface of rice of accept of technology of project of accept rice surface is with accept rice material and other low Weifei balances material to be a foundation, pass specific processing technique, process instrumentation, undertake aggrandizement, modified to solid surface, exceed careful treatment, or gift the systematic project of exterior new function. Technology of project of accept rice surface has applied foreground and market potential extremely. (1) rice of the accept that make is compound film. In the tradition eletroplate 0 dimension are added in fluid or material of body of pink of particle of rice of one dimension accept can form accept rice compound film. The Cr-DNP accept rice that is used at the mould is compound film, can make mould life is lengthened, precision is abiding and changeless, use film for long smooth flawless. Accept rice material still can be used at high temperature resistant wear-resisting compound film. If join material of body of N-ZrO2 accept ground rice Ni-W-B,be not brilliant condition compound film, can raise film to fight oxidation function to make in the high temperature of 550-850 ℃ of film be able to bear or endure corrode sex raises 2 ～ 3 times, wearability and hardness also rise apparently. Use Co-DNP accept rice compound film, in 500 ℃ above, with Co of Ni radical, Cr radical base compound film photograph is compared, the function of high temperature wear-resisting of workpiece surface rises greatly. In traditional brush plating solution, join material of body of accept ground rice, also but preparation gives the accept rice with superior performance compound film. (2) coating of structure of rice of the accept that make. Thermal spraying technology is a kind of of coating of structure of rice of the accept that make extremely competitive method. Compare with other technology photograph, it has a lot of advantage: Simple, coating and matrix choose technology range is wide, coating ply span is big, deposit rate is rapid, and form compound coating easily to wait a moment. Compare with photograph of coating of traditional thermal spraying, coating of accept rice structure is in intensity, tenacity, fight the respect such as corrode, wear-resisting, heat barrier, heatproof exhaustion to have marked improvement, and a kind of coating can be had at the same time afore-mentioned a variety of function. CNC Milling