Tempering Mesh Belt Furnace Fasteners Bolts 650C Recirculating Air 30kW 600mm

The SLT continuous mesh belt tempering furnace is a high capacity, forced air circulation unit built for the tempering stage that follows quenching in fastener and small metal part production lines. A wide 600mm mesh belt and four independently controlled zones allow large volumes of bolts, nuts, screws, washers and stamped parts to be tempered at a working temperature of 650C with excellent uniformity. High velocity recirculating air driven by top mounted fans moves heat evenly around the workload, achieving temperature uniformity of plusmn 5C, which is critical for consistent hardness and toughness after hardening. The furnace is designed to run continuously for long production campaigns and to integrate seamlessly with upstream hardening and downstream washing or plating equipment.

• High Speed Recirculating Air: Powerful circulation fans distribute heated air uniformly across the 600mm belt, delivering even tempering results and preventing soft spots or localized overheating in densely loaded batches.
• 650C Working Temperature: Four independently controlled zones hold the tempering temperature at 650C with plusmn 5C uniformity, matching the standard tempering range used for most quenched carbon and alloy steel fasteners.
• Wide 600mm Production Belt: The generous belt width accommodates bulk loading of small fasteners in baskets or trays, delivering high hourly throughput on a compact floor footprint.
• Low Energy Consumption: Thick ceramic fiber insulation and efficient air circulation reduce heat losses, keeping the installed power demand moderate at 30kW while still achieving stable tempering temperatures.
• Continuous In Line Integration: The inverter controlled belt drive can be synchronized with upstream quenching and downstream washing equipment, forming a fully continuous heat treatment flow for fasteners and small parts.
• Reliable Process Control: A PLC with touch screen interface stores dedicated tempering programs, monitors every control point and provides over temperature and thermocouple failure alarms for safe operation.

This tempering mesh belt furnace is designed for the continuous heat treatment of fasteners including bolts, screws, nuts, washers and rivets, as well as stamped parts, springs, chain components and small forged parts that require tempering after hardening. It is an ideal companion to mesh belt hardening and quench lines, allowing a complete quench and temper sequence to run without batch delays. Industries such as automotive fastener manufacturing, hardware production, construction fixings and machinery component supply rely on this configuration for consistent hardness, ductility and dimensional stability. Because the process is continuous, large and repeatable orders can be completed with predictable cycle times and stable quality.

The furnace body is fabricated from heavy gauge steel with refractory and ceramic fiber insulation, then pre assembled and temperature tested prior to shipment to confirm uniform heating and reliable airflow. Each unit is delivered with an inspection certificate, certificates for the main purchased components, a full technical document set and spare parts including thermocouples and heating elements. Robust wooden case packing with internal bracing protects the equipment during transport, and our service team assists with on site installation, commissioning and operator training. A defined warranty and a responsive spare parts supply ensure that the tempering line stays productive over many years of continuous operation.

To place an order or request a quotation, please share the fastener type and size range, the required hourly output, the target hardness after tempering and the tempering temperature you intend to use. We will select the correct belt width, number of zones and heating power, then provide a technical offer and layout drawing. Minimum order quantity is one unit, payment terms are T/T, and typical delivery is 60 to 90 days. Contact us for a tailored tempering solution and a competitive price.