Industrial 200mm Sintering Mesh Belt Furnace NTC & PTC Thermistors

Precision Firing for Optimal Electrical Contact and Long-Term Stability

The performance and reliability of NTC (Negative Temperature Coefficient) and PTC (Positive Temperature Coefficient) thermistors are critically dependent on the quality of their terminal connections. Tailord's Mesh Belt Sintering Furnaces are precision-engineered to create robust, low-resistance, and highly adherent silver electrodes on these sensitive ceramic bodies. Our furnaces deliver the exact thermal profile required to form a perfect ohmic contact without degrading the pre-sintered thermistor's delicate electrical characteristics, ensuring precise resistance-temperature response and durability in demanding applications.

Key Applications & Process Advantages for Silver Electrode Firing:

1. Low-Resistance Ohmic Contact Formation: Achieve a low and stable contact resistance between the silver electrode and the thermistor ceramic body. This is paramount for accurate voltage signal reading in NTCs and minimal power loss in PTCs, which directly impacts measurement precision and heating efficiency.

2. NTC Chip Electrode Firing: Excellently suited for firing silver terminations on miniature NTC chip thermistors. The uniform thermal profile ensures consistent electrode quality across thousands of chips, which is vital for maintaining tight resistance tolerances (e.g., ±1%) in batch production for consumer electronics and automotive sensors.

3. PTC Heater Electrode Adhesion: For PTC heating elements, the electrode must withstand repeated thermal cycling without peeling. Our controlled sintering process creates a strong mechanical and electrical bond that endures the intrinsic expansion and contraction of the PTC ceramic, ensuring long-term operational reliability.

4. Prevention of Ceramic Property Degradation: The firing profile is carefully optimized to sinter the silver paste at a relatively low temperature without affecting the pre-defined resistance-temperature curve of the sintered thermistor body. This prevents unwanted diffusion or reactions at the interface.

5. High-Volume Production Efficiency: Designed for 24/7 operation, our Mesh Belt Furnaces are the backbone of mass production for thermistors used in temperature sensing, inrush current limiting, and self-regulating heaters, offering unparalleled throughput and yield.

6. Superior Adhesion for Harsh Environments: The sintered silver electrode exhibits exceptional adhesion strength, capable of withstanding mechanical stress, humidity, and thermal shock. This makes it ideal for automotive under-hood sensors and high-reliability industrial controls.

7. Excellent Solderability and Wire Bondability: The resulting electrode surface is dense, non-porous, and free of organic residues, providing an ideal foundation for strong solder joints or reliable wire bonding during subsequent assembly processes.

8. Atmosphere Control for Oxidation Prevention: Operating in a clean air atmosphere is standard, but options for low-oxygen environments are available to prevent any potential oxidation of the silver, which could increase contact resistance, especially for high-reliability applications.

9. Gentle Handling of Fragile Components: The smooth, continuous motion of the mesh belt transports delicate thermistor chips and rods without impact or vibration, minimizing micro-cracks and breakage, thereby preserving the high intrinsic yield of the pre-sintered bodies.

10. Process Reproducibility for Consistent Performance: The unmatched thermal uniformity (±3°C) and profile repeatability of our furnaces guarantee that every thermistor batch receives identical electrode treatment. This ensures consistent initial performance and stable aging characteristics over the product's lifetime.

Partner with Tailord to ensure the critical link—your electrode—is as reliable as your thermistor. Our sintering solutions guarantee stable contacts that accurately translate thermal changes into precise electrical signals.

• Industrial PC integrated control system
• Ultrasonic mesh belt cleaning system
• Profiling test thermocouple
• Exhaust gas treatment system
• Industrial chiller