Knowledge What are the causes of failure of heating elements? (10 Common Reasons)
Author avatar

Tech Team · Kintek Solution

Updated 1 month ago

What are the causes of failure of heating elements? (10 Common Reasons)

Heating elements are crucial components in various industrial and laboratory settings. However, they can fail due to several reasons. Understanding these causes can help in preventing failures and ensuring the longevity of your equipment.

10 Common Reasons for Heating Element Failure

What are the causes of failure of heating elements? (10 Common Reasons)

1. Evaporation in Vacuum Chambers

When a heating element is exposed to a vacuum where the pressure is below the material's vapor pressure, it can evaporate. This reduces its cross-sectional area and leads to burnout, especially at higher temperatures. To prevent this, use materials with lower vapor pressures than the operating pressure in the furnace, or use partial pressure atmospheres above the critical evaporation temperature of the element material.

2. Mounting and Wiring Issues

Heating elements held in place by ceramic or quartz insulators can fail if these insulators are not kept clean. Accumulation of carbon dust or metallic condensates can lead to short-circuiting. Regular cleaning of these insulators, typically by heating them in air in a laboratory furnace, can prevent such failures.

3. Vacuum Leaks

Leaks in the vacuum system can lead to failures by affecting the operational environment of the heating elements. Regular checks and maintenance of seals and gaskets, tightening loose fittings, and replacing damaged components are essential.

4. Overheating

Damaged, worn, or faulty heating elements can lead to overheating, which is a common cause of failure. Proper temperature controller settings and regular inspection and replacement of elements can prevent this issue.

5. Power Supply Issues

Failures can occur due to issues with the power supply or wiring. Regular checks for damage or loose connections and maintenance or replacement of damaged components are necessary.

6. Gas Flow Issues

For furnaces using gas, improper gas flow or pressure can lead to element failures. Ensuring the gas supply is functioning correctly and checking valves and regulators for damage or leaks is crucial.

7. Formation of Hot Spots

Hot spots can develop due to local oxidation, shielding by supports, or incorrect fuse material selection, leading to uneven heating and eventual breakdown. Minimizing the number of supports and ensuring proper element temperature and support can help prevent this.

8. Oxidation and Intermittency of Operation

Frequent heating and cooling cycles can cause the oxide scale on the heating element to crack and flake off, leading to increased local oxidation and hot spots.

9. Embrittlement Due to Grain Growth

Heating alloys containing iron can form large, brittle grains, making the elements prone to rupture, especially when cold.

10. Contamination and Corrosion

Elements can be contaminated by gases, fumes from fluxes, or oil fumes, leading to dry corrosion and eventual failure.

Continue exploring, consult our experts

The most critical factors affecting the life of heating elements are the temperature of the hottest point and the ratio of intermittent to continuous working. Regular maintenance and monitoring of these factors can significantly extend the lifespan of heating elements.

Discover how KINTEK SOLUTION's specialized materials and cutting-edge products can help prevent the common causes of heating element failures! Our comprehensive range of high-quality components and expert guidance ensure your equipment operates efficiently and safely. Enhance your furnace's performance and lifespan today by partnering with the leading supplier of heating element solutions. Trust KINTEK SOLUTION to provide the durability and reliability your research and manufacturing processes demand. Contact us now to extend the lifespan of your heating elements and experience the KINTEK advantage!

Related Products

silicon carbide(SiC) heating element

silicon carbide(SiC) heating element

Experience the advantages of Silicon Carbide (SiC) Heating Element: Long service life, high corrosion and oxidation resistance, fast heating speed, and easy maintenance. Learn more now!

molybdenum disilicide (MoSi2) heating element

molybdenum disilicide (MoSi2) heating element

Discover the power of Molybdenum Disilicide (MoSi2) Heating Element for high-temperature resistance. Unique oxidation resistance with stable resistance value. Learn more about its benefits now!

Hydrogen atmosphere furnace

Hydrogen atmosphere furnace

KT-AH Hydrogen atmosphere furnace - induction gas furnace for sintering/annealing with built-in safety features, dual housing design, and energy-saving efficiency. Ideal for lab and industrial use.

Vertical tube furnace

Vertical tube furnace

Elevate your experiments with our Vertical Tube Furnace. Versatile design allows for operation under various environments and heat treatment applications. Order now for precise results!

High Thermal Conductivity Film Graphitization Furnace

High Thermal Conductivity Film Graphitization Furnace

The high thermal conductivity film graphitization furnace has uniform temperature, low energy consumption and can operate continuously.

Vacuum hot press furnace

Vacuum hot press furnace

Discover the advantages of Vacuum Hot Press Furnace! Manufacture dense refractory metals & compounds, ceramics, and composites under high temp and pressure.

Multi zone tube furnace

Multi zone tube furnace

Experience precise, efficient thermal testing with our Multi Zone Tube Furnace. Independent heating zones and temperature sensors allow for controlled high-temperature gradient heating fields. Order now for advanced thermal analysis!

High pressure tube furnace

High pressure tube furnace

KT-PTF High Pressure Tube Furnace: Compact split tube furnace with strong positive pressure resistance. Working temp up to 1100°C and pressure up to 15Mpa. Also works under controller atmosphere or high vacuum.

1700℃ Muffle furnace

1700℃ Muffle furnace

Get superior heat control with our 1700℃ Muffle Furnace. Equipped with intelligent temperature microprocessor, TFT touch screen controller & advanced insulation materials for precise heating up to 1700C. Order now!

Split multi heating zone rotary tube furnace

Split multi heating zone rotary tube furnace

Multi zone rotary furnace for high-precision temperature control with 2-8 independent heating zones. Ideal for lithium ion battery electrode materials and high-temperature reactions. Can work under vacuum and controlled atmosphere.

1400℃ Controlled atmosphere furnace

1400℃ Controlled atmosphere furnace

Achieve precise heat treatment with KT-14A controlled atmosphere furnace. Vacuum sealed with a smart controller, it's ideal for lab and industrial use up to 1400℃.

Continuous working electric heating pyrolysis furnace plant

Continuous working electric heating pyrolysis furnace plant

Efficiently calcine and dry bulk powder and lump fluid materials with an electric heating rotary furnace. Ideal for processing lithium ion battery materials and more.

Vacuum sealed continuous working rotary tube furnace

Vacuum sealed continuous working rotary tube furnace

Experience efficient material processing with our vacuum-sealed rotary tube furnace. Perfect for experiments or industrial production, equipped with optional features for controlled feeding and optimized results. Order now.

Vacuum tube hot press furnace

Vacuum tube hot press furnace

Reduce forming pressure & shorten sintering time with Vacuum Tube Hot Press Furnace for high-density, fine-grain materials. Ideal for refractory metals.

Integrated manual heated lab pellet press 120mm / 180mm / 200mm / 300mm

Integrated manual heated lab pellet press 120mm / 180mm / 200mm / 300mm

Efficiently process heat-pressing samples with our Integrated Manual Heated Lab Press. With a heating range up to 500°C, it's perfect for various industries.

Hydraulic Heated Lab Pellet Press 24T / 30T / 60T

Hydraulic Heated Lab Pellet Press 24T / 30T / 60T

Looking for a reliable Hydraulic Heated Lab Press? Our 24T / 40T model is perfect for material research labs, pharmacy, ceramics, and more. With a small footprint and the ability to work inside a vacuum glove box, it's the efficient and versatile solution for your sample preparation needs.

Vacuum induction melting furnace Arc Melting Furnace

Vacuum induction melting furnace Arc Melting Furnace

Get precise alloy composition with our Vacuum Induction Melting Furnace. Ideal for aerospace, nuclear energy, and electronic industries. Order now for effective smelting and casting of metals and alloys.


Leave Your Message