Roller Bottom Tempering Furnace

Danyang Dingfeng Industrial Furnace Co., Ltd. is one of the most reliable manufacturers and suppliers of roller bottom tempering furnace in China. If you're going to wholesale durable roller bottom tempering furnace made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.

Product Definition

 

It's a – not a . Parts go in one end, move through on rollers, come out the other end. Used for, or.
The hearth has that carry the through the . Works well for high volume production lines where you need consistent results. Steel pipes, plates, shafts, castings – if it's long or you're running a lot of them, this design makes sense.

Working Principle

 

Let me walk you through how it runs.

• Loading first. Put your on the inlet roller table. By hand or with an automated feeder – depends on your setup.
• Continuous heating. The rollers turn, carry the parts through multiple . Each zone has its own temperature control. You set a curve – for example, ramp up to 600 degrees in zone one, hold there in zone two and three.
• Soaking. As the parts move through, they spend a certain amount of time at the target temperature. How long? Depends on the roller speed and how long the furnace is. Rollers run slower for thicker parts that need more soak time. Faster for thin parts.
• Discharge and cooling. Parts come out the other end onto the outlet roller table. They cool in air or under forced fans. Sometimes water spray if you need faster cooling. Depends on the material.

• Continuous production. No stopping to load and unload. The rollers keep moving. I've got a customer running steel tubes through one of these – 300 tons per week, three shifts. They wouldn't get half that with a batch furnace.
• Temperature uniformity. We split the furnace into zones – typically three to six zones depending on length. Each zone has its own thermocouple and control. With good circulation fans, we hold within plus or minus 5 degrees C across the whole heating length. I measured a 12 meter furnace once – worst spot was 3 degrees off. That's fine for .
• Precise control. PLC or PID depending on what you want. The system controls both temperature and roller speed. Speed control matters because it sets your soak time. If your speed varies, your hardness varies.
• Energy saving. Good insulation – ceramic fiber or high-density wool. Heat loss is low. A customer replaced his old brick-lined roller furnace with our fiber version. His gas bill dropped 22 percent. Same production.
• Stable roller transmission. The rollers are heat resistant alloy – typically 310 stainless or RA330 for higher temperatures. Bearings are water cooled if the furnace runs above 700 degrees. Without cooling, the bearings cook and seize. We learned that the hard way years ago.
• High automation level. You can set it up to run automatically. Feeder, rollers, cooling, unloading – all tied together. One customer runs theirs with just one guy monitoring. The rest is automatic.
• Durable structure. Heavy steel frame. Refractory lining in the . Rollers wear out eventually – that's normal. But the furnace body itself lasts 20 years or more if you maintain it.
• Flexible customization. Heating zones – we can add more if you need finer control. Conveyor width – standard is 600mm to 1500mm, but we've gone wider. Temperature range – up to 850 degrees for , higher for if you need it.

Let me break down the parts.

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