A brief review about injection moulding processFull description
A brief review about injection moulding processFull description
MouldingFull description
Descripción: A brief review about injection moulding process
H.H Precision Mould Sdn Bhd is one of the pioneer Tool & Die manufacturers in Malaysia with 30 years of experiences in the market. Our company provide ONE STOP plastic injection mould m…Full description
plascticFull description
Full description
Descripción: mold design
Identification of Thermoplastics S.No
Name of Material
1
Polystyrene
2
Acrylic
Abbrevation
Relative Density
PS
1.05
Ease of Ignition
Whether self Character of extinguishing Flame Yellow Dense Readily burns No Black Smoke sooty Properties of Material
S.No
Name of Material
Density g/cm3
Bulk Factor
Specific Heat Heat Moulding Capacity Distortion Temperature Temperature J/KgoK
1
Polystyrene
1.05
1.9 - 2.15
90
200
1344
2
Acrylic
1.2
1.8-2
85
225
1470
Odour of burning
Behaviour of material
Oppressive Flowery
Melts and bubbles
Total Heat Content KJ/Kg 239.4 302.4.
Metal Industry Development Institute Product Design and Development Machine Specification S.No Category
1
Description
Size
Unit
Screw Diameter
22
mm
Shot Weight
29
gm
Shot Size
32
cm3
3008
kg/cm2
37
cm3/sec
Screw Stroke
85
mm
Plasticising Capacity
31
kg/hr
Screw Speed
0-440
rpm
Clamping Force
245.52
KN
Height
395
mm
Width
365
mm
1.73
Sec
17
Sec
Injection Injection Pressure Unit Injection Rate
Platen Size 2
Clamping Unit
General Dry Cycle Cycle Time
Material Properties S.No 1 2
Description Material Type Acrylic Density of mould
5
Mass of the component 5.05 (m) Projected area of the 2166.52 component Volume of the mold 3556.58
6
Surface Area
7
Elastic Modulus
8
Poisson's Ratio
9
Shear Modulus
10
Tensile Strength
11
Compressive Strength
12
Yield Strength
13
Thermal Expansion
14
Specifice Heat
15
Damping Ratio
3 4
Unit
gm mm2
Shot Capacity Shot Capacity of the machine 1
98
gm
Shot Weight Capacity with material B Material A
Polystyrene
Density of Material A Material A Bulk factor of A Shot Weight Capacity of material A Material B Material B Density of Material B Bulk factor of B Shot Weight Capacity of Material B Shot Weight capacity with material B 2
#DIV/0! Gram
Shot Capacity Swept Volume
32
cm3
Density of Plastic r
1.2
gm/cm3
C for amorphous plastics
0.93
C for crystalline plastic
0.35
Shot Capacity of the machine with the given material
35.712
gm
Plasticising Capacity Plasticising Capacity of the machine
Unit 31
Kg/h Kg/h
Plasticising Rate of material A (Polystyrene) Specific Heat Capacity of Polystyrene
J/KgoK
Specific Heat capacity of material
J/KgoK
Moulding Temperature of Polystyrene Moulding Temperature of material Total Heat Content Polystyrene
239.4
J/Kg
Total Heat Content Material
302.4
J/Kg
Plasticising Capacity of the machine with the given material
24.54167
Plasticising Rate of material Plasticising Rate Kg
Mass of moulding (m) Number of mouldings per hour Plasticising Rate
0
For maximum efficiency athe machine operated at 80 to 85% of the shot weight or plasticising capacity
Clamping Force Projecting area of moulding Injection Pressure Clamping Force
2166.52
mm2
63
MN/m2
136.49076
KN
Cycle Time 5.05
gm
Plasticising Capacity of the machine (P)
24.541667
Kg/h
Minimum cycle time attinable (tc)
0.740781
Sec
Mass of Shot (m)
S.No
Description
UNIT
Determination By Shot Capacity Based on 85% of rated shot capacity 1
Rated Shot capacity of the mateial (W)
35.712
gms
Mass of the component per cavity (M)
5.05
gms
Number of cavity based on shot capacity
6.010930693
Determination By Plasticising Capacity Based on 85% of rated Plasticising capacity Overall cycle time (TC) 2
17
Rated Plasticising Capacity (P)
24.54166667
Kg/hr
Mass of molding per cavity (m)
5.05
gm
Number of cavity based on Plasicising capacity
19.50644023
Determination By Clamping Capacity Based on 85% of rated Plasticising capacity 245.52
KN
Cavity Pressure (Pc)
63
Mpa
Projected area (Am)
2166.52
mm2
Rated clamping capacity C 3
Number of cavity based on clamping capacity 1.798803084
