Selecting the right belt for an elevated-temperature process is as complicated as it is important. Alloy selection, contaminants, temperature, mesh selection and the condition of the conveyor are all interrelated — no single factor can be assessed on its own.
1. Start with the process
Note the maximum and normal operating temperature, the atmosphere (air, steam, oil, protective gas), what the product is, how big the smallest piece is and how much load sits on each square metre of belt.
2. Choose the alloy
Mild steel suits many baking and ambient duties. Stainless grades such as AISI 304 and 316 add corrosion resistance; 310/310S and nickel alloys are used as temperatures rise. See our materials and temperature guide.
3. Choose the weave
Balanced weave is the economical all-rounder. Rod reinforced resists stretch at temperature. Gratex and closed pitch give a closer surface for small parts. Z-47 gives the flat surface biscuits need. Laminated belts give positive drive and a large open area.
4. Choose the edge
Welded edges suit normal loads; bent edges add flexibility and strength; chain edges give positive drive where tracking is a problem. Read more on belt edge types.
5. Plan for belt life
Once the belt is selected, the goal is maximum life and performance. Factors include installation and break-in, carburization, conveyor alignment and condition, nitriding, loads and load concentrations, preferential oxidation, operating conditions, contaminants and mechanical damage. Some are inherent in the process; many are highly controllable.
Get a recommendation
Send us your process details through the quotation form and our engineers will recommend a specification.