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Home Products Aluminium for Moulds

Special Alloys for Manufacturing Molds

ALUminium vs steel

WEIGHT
Aluminum is by weight one-third of the steel. The lightness of this material greatly facilitates the handling of large blocks, reducing costs such as transport.

MACHINING
Compared to steel, aluminium is an easier material to machine, so it is possible to improve delivery times when the mold is made of aluminium.

MOLDS FOR PRODUCTION OF PLASTIC PARTS
Aluminium is a great conduct and heat sink. The temperature is evacuated from the mold 3 to 4 times faster than in the same steel mold, the cycles reduce up to 25% in time, hence the increase in productivity. For years every effort has been invested in reducing the cycle time of the production of the plastic part through pressures, materials and rendering of blowing-injection machines. It is in process of cooling / heating the mold that we can notice great benefits in the use of aluminium molds.

Machining Process

  Time in % - Steel 

  Time in % - Aluminium

  Milling of faces and sides 100 % 16 %
  Drilling 100 % 17 %
  Total Machining Time 100 % (2h40min) 30 % (40min)
  Roughing 100 % 20 %
  Finishing 100 % 24 %
 
Other adVANTAGES of PRODUction
of aluminium MOLds

- Excellent polishing (mirrored)
- Production parts: up to 2 million units
- High thermal conductivity, reducing stabilization times
- Less machining and tool wear
- Lower cost of production

QUANTITY OF PARTS TO BE INJECTED BY ALUMINIUM QUALITY

Material

Temp. of Material (ºC)

Temp. of Mold (ºC)

Injection Pressure (in bar)

Pressure maintained (in bar)

AW 5083 Cast

Certal® / SPC

Alumold®

Hokotol®
Polietileno BD (PEBD) 160 - 260 20 - 70 500 - 1000   ●● ●●●● ●●●● ●●●●
Polietileno HD (PEHD) 260 - 310 50 - 70 600 - Max 30 - 100% ●● ●●●● ●●●● ●●●●
Polipropileno (PP) 250 - 270 40 - 100 600 - Max 50 - 100% ●● ●●●● ●●●● ●●●●
Poliestireno (PS) 180 - 230 20 - 60 1000 - Max   ●● ●●●● ●●●● ●●●●
Poliestireno CHOC (PSC) < 250 45 - 60     ●● ●●●● ●●●●  
SAN 220 - 260 50 - 70 1000 - Max   ● ●●●● ●●●●  
ASB 220 - 280 60 - 80 800 - 1400   ● ●●●● ●●●● ●●●●
Poliamida 6/6 (PA 6/6) 250 - 290 80 - 90 700 - 1200 30 - 100% ● ●●●● ●●●● ●●●
Poliamida 6 (PA 6) 240 - 290 80 - 90 800 - 1300 20 - 60% ● ●●● ●●● ●●●
Poliamida 11 (PA11) 230 - 300 30 - 90 400 - 700   ● ●●● ●●● ●●●
POM 180 - 220 50 - 120 800 - 2000 PI ● ●●● ●●● ●●●
PC 270 - 320 80 - 120 800 - 2000 70% ● ●●● ●●● ●●●●
PETP 260 - 270 140 1200 - 1700   ● ●●● ●●● ●●●●
PETP amorphous 270 - 290 70 - 80 1000 - 2000   ●● ●●●● ●●●● ●●●●
PBTP 260 - 270 40 - 50 1200 - 1700 60 - 100% ●● ●●●● ●●●●  
PPO 260 - 300 80 - 110 1000 - 2000 60 - 80% ●● ●●●● ●●●● ●●●
PVC 170 - 190 50 - 60 1200 - 1400 50 - 80% ●● ●●●● ●●●●  
PMMA 200 - 250 40 - 90 500 - 2000   ●● ●●●● ●●●● ●●●
PA 6/6 + fiberglass 260 - 290 90 - 120 900 - 1500 40 - 100% ●● ●● ●● ●●●
PA 6 + fiberglass 240 - 290 90 - 120 1000 - 1500 20 - 60% ● ●● ●● ●●●
PC + fiberglass 300 - 325 90 - 110 1000 - 2000 70% ● ●● ●● ●●●
●●●● 1.000.000 a 2.000.000 (Large qtt series) ●●● 100.000 a 500.000 (Medium qtt series)
●● 10.000 a 50.000 (Small qtt series) ● up to 5.000 parts