High Uniformity Atmosphere Controlled Box Furnace

L&L Special Furnace has manufactured a high uniformity box furnace used for hydrogen annealing. The furnace has been supplied to an industry leader that manufactures aerospace, medical and research and development supplies to a worldwide client base.

Steel hydrogen annealing softens metals and simultaneously changes the properties of the metal, improving:

• Machinability
• Facilitation of cold-work
• Mechanical and electrical properties
• Stability of dimensions

The furnace control system is driven by a Honeywell HC900 control system with touchscreen. This computer-based control system includes a CPU and operator interface with Ethernet capabilities. Modular construction makes the HC900 expandable, with many input and output options. HC900 software monitors and logs all of the thermal data from a remote computer. The furnace is divided into six zones, each with independent PID loops. The thermocouples are type K and allow for consistent operation at 1,750°F.

Options include mass flowmeters, dew point analyzers, ammeters and voltmeters. All units come with a three-day all-inclusive startup service within the continental US and Canada. International startup and training service is available by factory quote.

The furnace has been surveyed and is capable of ±10°F at 1,750°F throughout the work envelope. If precise temperature control and uniformity is a key to your process, then L&L’s XLC series is a great choice. L&L also has many other sizes available.