7、 molds semifinished materials fast manufacture technology solid casting  Because the massive molds are belong to the single unit or the production, the mold semifinished materials manufacture quality and the cycle and the cost to the final mold quality and cyclical and the cost influence are very important。 The modern mold semifinished materials widely have used the seeds casting technology, the so-called solid casting is (polystyrene PS either polymethacrylate PMMA) manufactures using the foam plastics replaces traditional the wooden mold or the metal pattern, after the modelling does not have to take out the model, then may the casting, under the foam plastics model high temperature liquid metal function, deflagrate the gasification but to vanish, the molten metal substitution original foam plastics model holds the position, after the condensation forms the casting。 

8、 other aspects technologies  in order to simplify the mold the structural design, reduces the mold cost, reduces the mold manufacture cycle, in domestic and foreign also successively appeared some other aspects new technology application, like trades the mold frame, the ramming unit, the cutting edge built-up welding quickly, inlays the block casting, the nitrogen spring and so on。 

（1）nitrogen springs on mold application  The nitrogen spring is one kind of new elastic function part, replaces the spring, the rubber, the polyurethane or the air cushion with it side, it can accurately provide presses the strength, then may have the greatly initial ball pressure in the small space, does not need pre-tightly, is basically hit the pressure basically in the mold entire work process to be constant。 The ball pressure size and the working point position may, accurate, conveniently adjust as necessary, simplifies the mold to stretch, nearby the pressure, ex-denning isostructuralism, simplifies the mold design, reduces the pattern making cycle, debugs the mold to be convenient, reduces the replacement mold time, enhances the production efficiency。 

  （2）fast trades the mold technology   Because product variety increasing, causes the mold in the production the transmutation extremely frequently, how thereupon reduces the ramming equipment the down time, enhances the production efficiency, fast traded the mold technology to receive people's attention。 At present developed industrial nation some big companies traded the mold speed to achieve astonishing degree, whether had fast trades the mold technology to become for an enterprise technology advancement sign。 The always tendency is reduces the mold to install on the equipment, to be fixed, the adjustment time, this both must give in the equipment structural design to consider, and must in the mold structural design, the standardized aspect consider, machine on work as far as possible placing machine under will do。

  （3）ramming units combination technology   The ramming unit combination technology is dies a resolve into each one simple unit the convention to die, according to the working procedure request, the arrangement combination, completes the many kinds of ramming working procedure when the identical inferior stroke the new craft equipment, the work the ramming unit not with the punch press slide joint, only needs the slide attack then to complete the ramming work。 When independent employment it is 1 complete mold。 It may use for to process the sheet or the molding punch holes, falls the material, cuts the angle, the grooving, shuts off and the shallow stretch and so on。 Has the assembly strongly, the easy to operate, the versatility, the efficiency is quickly good and so on the characteristic, suits the multi-varieties specially, center the production。   

 （4）may process the plastic in mold manufacture application  May process the plastic to be common in the developed industrial nation application, specially in manufacturing industry and so on automobile, airplane, mainly replaces the lumber or the metal manufacture automobile body host model, the profile, examines has and the casting model and so on。 May process the plastic the main characteristic is has both the lumber and the metal fine workability, the manufacture craft simple and direct (may use compression molding, pour, spells sticks, method well and so on sculpture), the size stability, does not distort, bears moistly, anti-corrosive, is easy to repair, the easy modification, the weight light, the manufacture cycle short, the cost to be low。