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Avoiding Temperature Inconsistency in Heat Treatment: Multi-Dimensional Technical Optimization Achieves ±5℃ Precision Temperature Control

2026-01-08

Avoiding Temperature Inconsistency in Heat Treatment: Multi-Dimensional Technical Optimization Achieves ±5℃ Precision Temperature Control

Temperature uniformity in heat treatment is a core indicator determining the key performance and batch consistency of workpieces. Temperature deviations not only lead to uneven grain size and abnormal phase transformation behavior but also directly affect product qualification rates. When the local temperature difference of metal sheets exceeds 20℃, the tensile strength dispersion will increase by 30%. For precision components such as semiconductor wafers, a temperature deviation of ±5℃ can cause a doping concentration fluctuation of over 10%, directly resulting in product scrapping. The core causes of this problem focus on three aspects: unreasonable layout of heating elements, poor hot air circulation, and insufficient furnace body sealing performance.

A mature system of targeted solutions has been formed:

Adopt a multi-zone independent temperature control design, increasing the power of edge areas by 10-15% to offset the "edge effect". Some equipment achieves high-precision control of ±0.8℃ through 24-zone temperature control.
Equip with a 3KW high-air-volume centrifugal hot air circulation fan and 304 stainless steel deflectors. When the air velocity reaches 2m/s, the temperature difference inside the furnace can be reduced from 15℃ to 3℃, breaking the temperature stratification.
Select low thermal conductivity insulation materials such as ceramic fiber (thermal conductivity <0.1 W/(m·K)), combined with a bellows seal structure, to control the heat loss rate within 1% and reduce heat loss.

Industrial Heat Treatment Furnace

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3D Measurement Equipment

Avoiding Temperature Inconsistency in Heat Treatment: Multi-Dimensional Technical Optimization Achieves ±5℃ Precision Temperature Control

Avoiding Temperature Inconsistency in Heat Treatment: Multi-Dimensional Technical Optimization Achieves ±5℃ Precision Temperature Control