50Ton Machanical Powder Compacting Press Machine Process C221
Ceramic Insulator
buy podwer press machine,mechanical powder press, podwer metallurgy
press machine
Function of dry powder press:
The ceramic powder press can discharge powder which are suitable to
shape into tooling via hopper,
powder pipe and filling shoe automatically, then the upper punch do
compacting to shape the powder,
thereby, realize the function of automatic withdrawal, ejection and
power filling to the shaped products.
All motions are completed automatically by mechnical powder press.
Shaping principle: lower punch fixed, when the cavity of die filled
with powder in filling position, firstly,
upper punch immerses into the cavity of die and do pre-pressing
(pre-pressing exhaust) for powder,
then upper punch and die move downward simultaneously and do
compressing for power. At this time,
the lower density of green part is higher than upper part, finally,
upper punch compress the powder to
the cavity of die and do top pressing. At this time, the density of
upper part also become higher, therefore,
realize double-direction function. When die continues to move
downward, the green parts eject out from
the die; if the upper punch has a suitable pressure which is
constant compacting on the green parts till green
parts ejected out from the die so as to ensure protective
withdrawal and avoid cracks caused by product expansion
during ejection, it also called protective withdrawal.
Parameter of automatic powder press machine:
Max. pressing force : 500kN
Max. withdrawal force : 300kN
Max. supporting force in pressing position: 300kN
up punching travel: 195mm
Max. filling powder height : 170mm
withdrawal travel: 170mm
punch stroke: 10～20spm
main motor: 15kW
preload travel of up punching: 80mm
stepless variator: inverter
cultch: air clutch
operation mode: human machine interface
pressure display device: elastomer pressure sensor
angle display: rotary encode
Technology and control of ceramic powder forming machine :
1.realize homogenization of green body
No matter whether it is dry powder pressing or isostatic pressing,
there are internal and external friction
between powderparticles and between powder and mold wall, which
leads to uneven density distribution
of green body. Especially in dry powder pressing, in the pressing
direction, the pressure decreases exponentially
with the height change, forming a density gradient, which makes it
difficult to achieve the consistency of green body
density. Secondly, in order to meet the powder molding
characteristics required by press molding, a certain amount
of additives need to be added.Whether they are uniform in each
single particle is also an important factor affecting the
homogeneity of the green body.
2. Forming mode:
The factors that affect the density of green compacts are very
complex. Apart from the characteristics of powder
itself, the main factors are the shape and size of green compacts,
the side-to-side area ratio of pressed pieces,
pressing pressure, mold roughness, lubrication conditions, pressing
methods and friction coefficient of powder
movement in the mold, etc. All these play an important role.
Practice has proved that isostatic pressing is superior
to dry powder pressing, and wet isostatic pressing is superior to
dry bag isostatic pressing. Now, the internationally
popular full-automatic dry powder press adopts the crank-connecting
rod mechanism of forced bidirectional pull-down pressing.
Many products are not simple blanks,
with different thicknesses and even multiple steps. When
special-shaped products are formed, the movement track of
each part of the die in the press is different, and the thickness
of each part is different. According to the molding technology,
the feeding method, the pressing times of the upper and lower dies,
the position of the pressing line and whether the protective
demoulding is adopted should be selected according to the shape of
the workpiece.
Work Environment for automatic compactting press :
Environment temperature 5℃-35℃
Humidity: relative humidity ≤95%
Power supply voltage: 380V ± 10%
Compressed air pressure: 0.55-0.65MPa
Hoist ≥3t (only used for lift tool adaptor, not for install press)
Packing & shipping:
PVC film covered hydraulic press
Whole machine fixed in the container with steel rope,very safe
Wooden case or pallet or iron box
If have stock,can provide right now
If no stock,small machine delivery time 7-15days.Big machine
delivery time 25-40days.
Can give destination port best price or cost to the customer
factory
More information please contact us:
wxmachinery@163.com
WhatsApp:+86 13961729519
Skype: zouqicheng
QQ: 2308574039
Forming mold of ceramic insulator on dry powder press machine:
