Rotating oven for cycles
of vulcanization elastomer
It is an oven designed for the post-curing treatment of elastomeric materials and in particular for O-Rings, for which flatness is required.
All types of materials can be treated such as: NBR, Silicones, Viton etc. The material to be treated is poured into a perforated rotating stainless-steel basket and placed in continuous rotation, it is also hit by two streams (to the right and left of the basket) of hot air. The air is heated by means of stainless steel finned armored resistances with high heat exchange.
Construction Data
Internal material: Steel
External material: Stainless-Steel
Maximum temperature: 300 °C
Seals: fiberglass for high temperatures
Power: 2,4 kW
Weight: 1.700 kg
Characteristics
The oven is characterized by the numerous characteristics that allow to improve the post- curing process.
L.C.P. Valve
Programmed chamber wash: expels the condensed fumes from the chamber.
Control and regulation of incoming air
Heat exchanger
allows considerable energy savings
Siemens PLC thermoregulator
improves control and temperature regulation
Air exchange
Air circulation is the most important feature for ovens.
Good air circulation ensures uniform temperature distribution and, as a result, a shorter process time as well as higher product quality.
Our solution is to use clean air introduced at the fan intake, mix it with the hot air already circulating inside the oven, and then deliver it into the working chamber through adjustable dampers.
This makes it possible to regulate the correct amount of air and achieve optimal temperature distribution.
Safety systems
Although highly reliable, the possibility of a malfunction cannot be ruled out. For this reason, the electrical control panel is equipped with a second temperature controller, completely independent from the PLC and connected to a second temperature probe.
It is essential that it be set to a temperature at least 20 °C higher than the vulcanization temperature.
Siemens PLC control system
The system used is a Siemens PLC with the ability to store up to 49 programs. Thanks to Ethernet data output, the PLC can be interfaced with a PC. Dedicated software allows the oven to be managed completely remotely by “launching” post-vulcanization programs, viewing the temperature/time diagram, and storing the actual cycle while associating it with the batch code.
This solution is fully compliant with the requirements explicitly stated by Quality standards.
Alternatively, a Standard version of the programmer is available, which does not allow the storage of work programs.
As a further option, we can interface the PLC with the company management system (upon request and subject to evaluation by our IT department).
Technical features
- Siemens PLC series 1211 with expansion for 1 PT100 (RTD) probe channel.
- Siemens 24 V – 2.5 A stabilized power supply.
- Siemens KP300 small monochrome operator panel.
- Heating elements controlled by Gefran static relays, 25 A (or higher depending on the installed power).
- Oven emergency protection Category 4 with safety module.
- Gefran 600 controller for redundant oven temperature control with manual setting of the maximum operating temperature.
- The entire oven is managed and controlled via the PLC.
- Oven time setting mode in minutes, temperature without ramp, and threshold.
- Maximum temperature alarm.
- Provision for Flite_1200 single-direction recording program.
Programming modes:
- Capability to load up to 49 programs.
- Each block includes temperature set point, ramp time, soak (stable) time, and tolerance band settings.
- Electrical drawings and corresponding electrical certification included.
Technical data of some models
| External Dimension (cm) |
Weight (kg) |
Basket Volume (l) |
Electric power engines (kw) |
Electric power resistance (kw) |
|---|---|---|---|---|
| 234 x 250 x 265 | 1.700 | 800 | 2,4 | 18 |
WE ARE ABLE TO PROVIDE MADE TO MEASURE OVENS STUDIED TO SATISFY YOUR NEEDS
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We are at your complete disposal to design a customized solution
Our Ovens
Oven studied for the treatment of post-curing of elastomer materials such as NBR, Silicone, Viton, etc.
Max Temp. 200 / 300°C
Oven studied for the treatment of post- curing of elastomer, such as O-ring, for which flatness is required.
Max temp. 300°C
Oven studied for the specific application of sintering treatments on PTFE polymers.
Max temp. 450°C
Oven designed to hold the moulds before being installed on the press.
Max temp. 200°C
Our Stoves
Avantgarde.Line drying and heating ovens with forced ventilation and advanced programming functions.
Max temp. 300°C
These chamber ovens equipped with an air circulation system are distinguished in particular by the excellent uniformity of the temperature that they allow to obtain.
Temp. max 850°C
Contact immediately our experts for a free quote
Fill in the form below or call us at the number
+39 035 31.10.40
We have specialized for 20 years in the supply and consultancy of
scientific instrumentation for quality control and R&D laboratories.
Via Fiume Po, 50 – 24040 Stezzano (BG)
+39 035.31.10.40
www.forlabitalia.it