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Electric Resistance Furnaces

Electric resistance furnaces include conveyor models with adjustable feed speed and controlled heating/cooling zones for hardening and tempering wire springs. They are used in spring manufacturing, automotive, toolmaking, and mechanical engineering to enhance strength, elasticity, and fatigue resistance of components.

Subcategories

Total: 7 products
Continuous spring tempering furnace WNJ420
WNJ WNJ

Continuous spring tempering furnace WNJ420

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 2000mm x 400mm x 90mm
Heating power 26kW
Feeding speed 10m/min — 60m/min
Price on Request
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Continuous spring tempering furnace WNJ315
WNJ WNJ

Continuous spring tempering furnace WNJ315

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 1500mm x 300mm x 90mm
Heating power 16kW
Feeding speed 5m/min — 60m/min
Price on Request
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Continuous spring tempering furnace WNJ630
WNJ WNJ

Continuous spring tempering furnace WNJ630

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 3000mm x 600mm x 120mm
Heating power 48kW
Feeding speed 10m/min — 60m/min
Price on Request
More Details
Continuous spring tempering furnace WNJ530
WNJ WNJ

Continuous spring tempering furnace WNJ530

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 3000mm x 500mm x 120mm
Heating power 40kW
Feeding speed 10m/min — 60m/min
Price on Request
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Continuous spring tempering furnace NS540
KDE

Continuous spring tempering furnace NS540

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 4200mm x 500mm x 120mm
Price on Request
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Continuous spring tempering furnace WNJ210
WNJ WNJ

Continuous spring tempering furnace WNJ210

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 1000mm x 200mm x 90mm
Heating power 8kW
Feeding speed 5m/min — 60m/min
Price on Request
More Details
Continuous spring tempering furnace WNJ740
WNJ WNJ

Continuous spring tempering furnace WNJ740

Type of heat treatment Quenching / Tempering
Field of application Wire products
Chamber size 4000mm x 700mm x 120mm
Heating power 65kW
Feeding speed 10m/min — 60m/min
Price on Request
More Details

Electric resistance furnaces provide precise, energy-efficient heat treatment in a controlled atmosphere. Uniform temperature distribution and programmable thermal cycles ensure consistent metallurgical properties for springs, pins, fasteners, and other parts made from carbon and alloy steels.

Modern units like WNJ210, WNJ315, WNJ530, WNJ630, WNJ740, and KDE NS540 feature digital controls, inert or reducing atmospheres, and water quenching systems. With working chambers up to 4200×700×120 mm and power up to 65 kW, they handle everything from micro-springs to heavy-duty automotive components.

KNAVI GROUP supplies resistance furnaces directly from manufacturers. All equipment comes with full English documentation, up to 2 years of warranty, operator training, and optional on-site commissioning worldwide.