Stress Relief Ovens

JN Machinery knows springs. JN Machinery knows furnaces. And JN knows efficiency. After all, we've amassed over 50 years of experience.
Today, their modern furnaces offer on-line stress relieving for superior quality and significantly increased productivity. High-temperature, fast-cycle conveyorized stress relieving has been proven by the British Spring Institute and the Japanese Spring Association to provide more uniformity than batch furnaces and vibrating spiral furnaces. By using JN furnaces right at the point of operation, heat treatment times can be reduced from 30 minutes to as little as 2 minutes, depending on spring design. Specific benefits of the JN Machinery furnaces include:

Improved quality: Immediate stress relief means less dimensional variation and relaxation. The conveyorized belt keeps parts separated for uniform heating and less distortion.
No tangling: Parts are not bunched together, allowing packaging at furnace exit.
Easy SPC: Allows immediate feedback on loads and dimensions.
Portability: Compact size and swivel casters allow easy movement from machine to machine.
No labor: Parts drop directly on the belt from a production machine. No batch movement to another area is required.
Low maintenance: Simple; solid state design allows easy access to all parts of the furnace.
Reduced set-up time: No waiting for batch heated samples. Immediate feedback on dimensions and loads.
Low energy consumption: JN uses energy efficiently, Nichrome heaters, ceramic fiber insulation and an insulated belt return provide low energy use. Pre-heat time only 6 minutes for 625°F.