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ADVANTAGES:
- By employing Metal Gathering, many of the well known technical
limitations and disadvantages of Mechanical Upsetting can be overcome
- Simultaneous heating and forming in one machine
- Almost unlimited gather in one operation. The mechanical upsetting
limitation of about three times the diameter no longer applies. The modern
engine valve has an upset length of up to 20 times diameter and lengths up
to 40 times diameter are commonly electro-upset
- No longitudinal flash is formed (of the kind which is unavoidable in
Mechanical Upsetter)
- No waste of Heating Energy or Material. Outside of the upset volume can
be precisely controlled to allow subsequent 'Flash-Less' forging in closed
dies
- Always ready for Instant Use. No warm-up period.
- Energy efficient, about 0.35 to 0.40 kwh / kg.
- Minimal scaling because of simultaneous heating and gathering. Improved
die life in subsequent forging operations.
- Noise Free and Environment Friendly as the machine does not emit heat,
fume, exhaust gases or other pollutants.
- Free upsets can be finish forged without re-heating thus saving time and
energy.
- Consistent heating temperature through the use of thyristor control.
- Optimal grain flow and fault free surface. The unheated bar length
remains unchanged.
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