As critical equipment for conveying high-viscosity polymers at temperatures ranging from 200 to 500°C, high-temperature melt pumps are engineered around the core requirements of “high-temperature resistance, high-pressure resistance, and high precision.” Their primary characteristics are as follows:
I. Main Structure: Rugged and Durable
The pump body and front/rear end covers are crafted from 38CrMoAlA or high-temperature alloy materials. Nitriding or quenching treatments achieve surface hardness exceeding HV900, ensuring resistance to high-temperature oxidation and melt corrosion. Internally, optimized flow channels are smooth to minimize melt stagnation and shear overheating, facilitating high-viscosity melt flow.
II. Transmission Core: Precision and Stability
The drive and driven gears feature high-precision involute design with meshing clearance ≤0.015mm. Gear surfaces are hard chrome-plated or coated with wear-resistant layers to ensure smooth operation without seizure at high temperatures. Gears and shafts are integrally forged to prevent loosening, ensuring high power transmission efficiency with flow rate deviation controlled within ±0.5%.
III. Support System: Low-Wear, Low-Friction
Features nitrided steel or alloy steel sliding bearings with a lubrication-free design, relying on self-lubrication from the melt to suit high-temperature, oil-free conditions. Precision-fit bearings and shafts minimize operational wear, extending service life.
IV. Sealing Device: Reliable Leak Prevention
Features spiral seals, mechanical seals (with silicon carbide-graphite pairing for rotating/stationary rings), or combination seals. Effectively isolates high-temperature melt from the external environment, prevents leakage, and maintains stable internal pump pressure.
V. Temperature Control System: Precise Adaptation
The pump exterior incorporates cast aluminum heating jackets or thermal fluid heating channels, paired with K-type thermocouples for real-time temperature monitoring, achieving ±2℃ control accuracy. Select models feature cooling channels for rapid temperature adjustment, preventing melt carbonization or solidification. The compact overall structure integrates components optimized for high-temperature, high-pressure conditions, ensuring stable melt conveyance, pressurization, and metering.
Email: sale@meltpump.com
WhatsApp: +86 158 3833 1071
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TEL：+86 371 67991755
WhatsApp： +86 158 38331071
Adress: No.22 Dongqing Str., High & New Technology Development Zone, Zhengzhou, China.
