long800129
幼苗
共回答了19个问题采纳率:89.5% 举报
Casting machine casts the principle:
One,heats up the raw material solid process material tube in,loses the pass,the compaction,cuts,the mix,causes to melt the bodythe temperature equalization,the viscosity equalization,the densityequalization and the material component equalization,causes thematerial to mount the ball condition transformation from the glasscondition process for to mount the fluid state.
Two,must complete before the injection in the raw materialplasticizing process the measurement procedure,because the polymerheat engine characteristic had decided models the process is inadvance the heat energy input and the switching process,models theprocess in advance the heat energy input way as follows:
1.The material tube heats up through the electric heating part,expects in the tube the material to absorb exterior heating throughthe heat conduction to cause it to soften and to fuse.
2.The material depends on the screw rod to revolve causes themechanical energy to transform into the heat energy,through cuts themechanism and the friction mechanism,heats up oneself,causes it tofuse.
3.The material heats up through 1,2 ways union.In exterior thematerial tube a material plastified part depends on passes on the heatconduction,another part depends on the screw rod to revolve cuts theenergy to control the material the plastified process and theplastified quality.
Three,casts the sufficient mold:Injects the sufficient mold stage isthe screw rod in the injection cylinder thrust force function,ChuLiaoshi in melt body after spray nozzle,mold flow channel,pouring into cavity.When injection,establishes the intensity ofpressure in the screw rod forehead melt body to call the injectionpressure; The screw rod advances the melt body the speed to call theinjection speed,its calls the injection speed; Its travellingschedule called the injection travelling schedule,with models thetravelling schedule in the value with to call in advance themeasurement travelling schedule is consistent.In the injection stage,must cause the melt body establishment enough speed and the pressurehead,can complete the sufficient mold process,the guarantee productquality.
Four,guarantees the pressure to make up shrinks:After the injectionstage completes,the essential process continues to maintain under thepressure function,in the cavity melt body obtains because of coolsmakes up shrinks,the product obtains the compression with to increasedensely.Guarantees presses the pressure,may maintain the originalinjection pressure (an injection pressure),also may reduce mayenhance the original injection pressure,forms two,three level or themultistage pressure.Guarantees presses the stage the characteristicis melts the body to flow under high pressure idling speed,the screwrod has small makes up shrinks the displacement,the materialincreases ambassador along with cooling and the density the productgradually to take shape,guarantees presses the pressure to holdarrives in succession frozen seals up to.
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