R-PM Heater - Permanent magnet induction heater for aluminum extrusion
Randax Ltd is agent and representative of R-PM Heater in European market. R-PM Heater (R-PMH) is developed by Shanghai Realman Energy Technology Co., Ltd (SHRET) in China. R-PMH product is result of long term development work of SHRET together with European physicists and Randax as a developer for the electric PM motors of the heater. SHRET was founded in 2005 and it is a high-tech enterprise in Shanghai, China, focused on clean energy and intelligent manufacturing for international technology companies.
Permanent magnet induction heater offers unsurpassed efficiency compared to conventional heating methods. In R-PMH electricity is used only for automation and to run the PM Motor with hollow shaft. Aluminum heating itself is done by rotating heating permanent magnets inside the hollow shaft.
- R-PMH operates with much higher energy efficiency level of 80 %, compared to gas ovens or induction heaters that operate with efficiency levels of 35% - 50%. This essentially halves power consumption and generates substantial savings in energy costs.
R-PMH as the world's unique and compact aluminum billet heater, providing more precise temperature control and perfectly linear gradient heating.
- In Isothermal Extrusion (IE), axial temperature gradient / taper of R-PMH is very accurate and this way improves customer’s product quality and productivity. In optimal case, customer’s extrusion press capacity can be increased by up to 25%.
- R-PMH requires only small floor space in customer’s factory and can handle both, soft alloys as well as hard alloys.
- SHRET is having several references about the running heaters with proven track record of excellent performance. More information about the R-PMH references from Randax Ltd.
Project equipment |
Permanent magnet heater R-PMH |
Traditional induction heater |
Energy efficiency |
85% | 50%-60% |
Energy consumption (20 -> 480°C ) |
170 kWh/ton | ≥ 280 kWh/ton |
Capacity |
2-3 min / billet | 2-3 min / billet |
The temperature gradient |
Linear | Nonlinear |
The cooling water |
bit | lot |
Motor speed |
600~1100 rpm/min | / |
Maintenance time |
<2h | >24h (discontinued losses Large) |
Power supply |
380V AC | High power transformers required (additional cost) |
Type of motor |
High efficient Randax PM motor (eff. 96.7%) | / |
Installed power ratio | 60% | 100% |
More information about the R-PM Heater, please contact:
Fredrik Jirlow
Tel. +31 6 48 45 30 90
fredrik.jirlow@randax.fi
Jari Koppelo
Tel. +358 44 734 6312
jari.koppelo@randax.fi