GB/T 39192-2020 in English
VALIDHeat treatment of superalloy parts
- Issued on:2020-10-11
- Implemented on:2021-05-01
- File Format:PDF
- Delivery:Via email within 5 business days
$291.00
《GB/T 39192-2020高温合金件热处理》由TC75（全国热处理标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
| Alloy type | Typical process | Temperature range(℃) | Key control points |
|---|---|---|---|
| Iron-based deformed alloy | Solution treatment + aging | 1050-1200 | Soaking time calculation |
| Nickel-based deformed alloy | Segmented solution treatment + double aging | 950-1200 | Cooling rate control |
| Casting high-temperature alloy | Homogenization treatment | 1100-1220 | Grain size determination |
Key technical requirements
Equipment specifications
The vacuum furnace must meet the cold pressure rise rate ≤1.33 Pa/h and the inert gas furnace dew point ≤-51℃. Heat treatment furnace temperature uniformity classification:
- Aging treatment: ±5℃ (Type I furnace)
- Solution treatment: ±10℃ (Type II furnace)
Typical process case
GH4169 alloy turbine disk heat treatment:
- Solution treatment: 955℃×(1-2)h, air cooling
- Step aging: 720℃×8h→620℃×8h (furnace cooling 45-65℃/h)
Implementation suggestions
Key points of process control
- Furnace loading density : The distance between adjacent workpieces is ≥1.5 times the thickness
- Temperature monitoring: D-type instrument system is equipped with at least 3 thermocouples
- Cooling control: Oil-cooled workpieces must be cooled to below 200°C before leaving the tank
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