Indec P20 Die Casting Machine
1.0 Model usage
Die Casting of lead lid Inserts
2.0 Description
The DCMT P20 is designed and built to produce high quality pressure die castings. It is simple both to maintain and operate.
The simplified toggle mechanism is designed to operate at high speeds and is easily maintained. The machine is equipped as standard with a mechanical sweep device which clears loose particles from the die faces.
The machine is built on a fully machined stress relieved bed.
Standard equipment includes a metal holding injection pot incorporating a gas burner with flame failure device, automatic ignition and time clock control.
Propane or oil burners are optional. Reliable solid state controls minimise unproductive down-time. Air filter, lubricator and regulator are standard.
Machine Base
Fabricated steel plate stress relieved base with machined bed ensures rigidity and proper seating for toggle unit and injection system. Hollow design permits in-line conveyor installation which is available as an extra cost option.
Toggle System
The production proven easily maintained toggle mechanism is designed to be compatible with potential production speeds.
Locking pressure is maintained by in line surface contact of the exterior links.
Toggle links are manufactured from solid steel. The moving platen is bushed in the tie bar bores to ensure continued alignment of the platens with proper maintenance.
Injection System
The machine pot with integral gooseneck is manufactured from special grade heat resisting cast iron and features a tool steel replaceable sleeve. Both plain and ringed plungers are available. The machine pot holds approximately 68 kg lead alloy.
Die Cleaning Brush
An automatic sweep device incorporating phosphor bronze brushes helps maintain die surfaces free from loose particles after each casting ejection. This device can also be manually initiated.
Control System
The control system enables the machine to be operated in three different modes: Manual operation is achieved by sequentially pressing four buttons; single cycle semi-automatic operation is accomplished by pressing a single button to initiate each complete shot cycle; automatic operation is accomplished by pushing the start cycle button. Solid state four stage timer system ensures minimum maintenance and maximum service life.
Operator and Die Safety
Fully interlocked toggle guarding incorporates a sliding section to provide access to the die area, but prevents entry during machine operation. A ratchet type safety scotch provides a progressive mechanical restraint to prevent inadvertent closing of the toggle mechanism.
Lead Melting Furnace
For continuous operation the P20 die casting machine is integrated with a 1.1/4 tonne lead melting furnace and transfer pump.
This arrangement ensures the die casting machine has a constant supply of dross free alloy at the correct temperature. Delivery of alloy from the lead melting furnace is initiated by means of a pot level control.
The lead melting furnace is supplied complete with extraction hood and independent control cabinet.
3.0 Technical specification
 | Locking force 20.32 tonnes |
| Distance between tie bars 190 mm x H x 190 mm W |
| Die height (max) 165 mm |
| Die height (min) 89 mm |
| Maximum casting area 775 mm2 |
| Maximum casting capacity |
| (Lead alloy, 38 mm plunger) 810 g |
| Die opening stroke 102 mm |
| Fixed platen size 375 mm x 340 mm |
| Moving platen size 267 mm x 267 mm |
| Machine injection pot |
| Capacity (lead alloy) 68 kg |
| Machine Injection |
| Pot Burner 116,000 kj |
| Air pressure required 6.9 bar |
| Air consumption/cycle 0.0094 m3 |
| Injection pressure on metal |
| with 28.6 mm dia plunger 175 kg/cm2 |
4.0 Service requirements
| Electricity: 22O volts, 1 phase, 50 hertz, 0.5 kW |
| Compressed Air : 70 m3/hr at 90 P.S.I. (6.3 kg/cm2) |
| Natural Gas: 6 m3/hr at 11 in w.g. (0.03 kg/cm2) |
| Cooling Water: 0.6 m3/hr at 30 P.S.I. (2.1 kg/cm2) |
5.0 Floor space requirements
| 1524 mm long x 787 mm wide x 1828 mm high |
6.0 Output
The P20 die caster when fitted with a four impression mould (2 positive, 2 negative DIN standard taper posts) will cycle at over five times per minute, producing approximately 8000 components in an 8 hour shift (7 hrs worked). Output is dependant on both maintaining a constant supply of preheated alloy to the P20 machine pot and on correct alloy composition.