The special-shaped rubber strip extrusion line is equipped with microwave vulcanization box and hot air vulcanization box
Introduction to Microwave Vulcanization:
The microwave vulcanization process for sealing strip extrusion is an advanced rubber vulcanization method. The following is a related introduction:
The principle of microwave vulcanization process is to use microwave energy to heat the rubber sealing strip, so that the rubber molecular chain undergoes a cross-linking reaction, thereby achieving vulcanization.
The advantages of this process include:
1. Fast vulcanization speed: greatly shortens the production cycle and improves production efficiency.
2. Uniform heating: the sealing strip can be heated evenly as a whole, the vulcanization quality is stable, and the product performance consistency is good.
3. Energy saving and high efficiency: compared with traditional vulcanization methods, microwave vulcanization is more energy-saving and reduces production costs.
4. Improve product performance: It helps to improve the physical properties of the sealing strip, such as tensile strength, wear resistance and aging resistance.
The process flow usually includes:
1. Extrusion molding: the rubber raw material is extruded into the shape of a sealing strip through an extruder.
2. Microwave heating: the extruded sealing strip is sent to the microwave vulcanization equipment for rapid and uniform heating.
3. Vulcanization reaction: under the action of microwaves, the rubber undergoes a vulcanization reaction and the molecular structure changes.
4. Cooling and shaping: After the vulcanization is completed, the sealing strip is quickly cooled and shaped by the cooling device.
When implementing the microwave vulcanization process for sealing strip extrusion, it is necessary to strictly control parameters such as microwave power, heating time, and vulcanization temperature to ensure the vulcanization effect and product quality. At the same time, the equipment needs to be regularly maintained and calibrated to ensure its stable and reliable performance.
Technical parameter:
Type | XJ-65 | XJ-115B | XJ-120 | XJ-150 | XJ-200 |
Screw diameter (mm) | 65 | 115 | 120 | 150 | 200 |
Length-diameter ratio of screw(L/D) | 4 | 4.8 | 4.6 | 4.43 | 4.35 |
Compression ratio | 1.3 | 1.34 | |||
Rotary speed pf screw r/min | 5.2-52 | 5.4-54 | 5.6-55.6 | 20-26 | 22.4-67.2 |
Motor power KW | Electromagnetic speed 7.5KW | Electromagnetic speed 22KW | Electromagnetic speed 22KW | Frequency control 55KW/ Motor commutator 8.3-55KW | 25-75Motor commutator |
Production capacity kg/h | 50-80 | 100-420 | 100-450 | 700-1200 | 1500-2200 |
Strean pressure (Mpa) | 0.2-0.3 | 0.4-0.6 | 0.2-0.4 | 0.6 | 0.6-0.8 |
Cooling water pressure (Mpa) | 0.2-0.3 | 0.2-0.3 | 0.2-0.4 | 0.2-0.3 | 0.2-0.3 |
Overall:Length×Width×Height(mm) | 1750×550×1100 | 2390×760×1450 | 2427×750×1330 | 3411×814×1470 | 4564×1800×1750 |
Specific requirements for microwave vulcanization:
The vulcanization time and vulcanization temperature parameters of the microwave vulcanization process are not fixed. They are affected by many factors, such as the type of rubber, formula, shape and size of the product, etc. The following are some common reference ranges, but in actual applications, they need to be adjusted and optimized according to specific circumstances:
- Vulcanization temperature: usually between 100℃-200℃. For example, for some rubber materials, a good vulcanization effect may be achieved at around 150℃; while for other rubber products with special formulas or requirements, the vulcanization temperature may need to be appropriately increased or decreased.
- Vulcanization time: generally ranging from tens of seconds to several minutes. For example, for rubber products with simple shapes and small sizes, vulcanization may be completed within tens of seconds; while for larger, thicker or complex products, the vulcanization time may take several minutes or even longer.
In actual production, determining the optimal vulcanization time and vulcanization temperature parameters requires continuous exploration through experiments and experience. You can first conduct a small-scale test to observe the vulcanization degree and performance of the product under different parameters, and then make adjustments based on the test results to find the most suitable parameter combination for the specific product to ensure that the rubber product can achieve the ideal vulcanization effect and quality requirements. At the same time, you also need to consider the performance and characteristics of the equipment, as well as production efficiency and other factors.