GB/T 39962-2021 in English
VALIDDie casting machine -- Energy efficiency limits and energy efficiency rating
- Issued on:2021-03-09
- Implemented on:2021-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$146.00
《GB/T 39962-2021压铸机 能效限定值及能效等级》由TC186（全国铸造机械标准化技术委员会）归口，TC186SC2（全国铸造机械标准化技术委员会金属热成形分会）执行，主管部门为中国机械工业联合会。
Introduction
Interpretation of the core content of the standard
GB/T39962-2021 establishes the energy efficiency evaluation system for the entire life cycle of die-casting machines in my country for the first time, with key specifications:
- Energy efficiency limit value: Set a 4-level entry threshold to eliminate backward production capacity
- 5-level energy efficiency system: Level 1 is the international advanced level, and Level 5 is the elimination critical value
- New evaluation indicators: Introduce specific energy consumption (Eb) as the core parameter
Comparison of key technical indicators
| Machine model | Level 1 energy efficiency threshold | Level 3 limit value | Test module requirements |
|---|---|---|---|
| Cold Chamber Die Casting Machine (F≤8000kN) | ≤1.3×10-5 | ≤3.5×10-5 | ≥50 moulds |
| Hot Chamber Die Casting Machine (F≤880kN) | ≤1.3×10-5 | ≤5.0×10-5 | ≥50 moulds |
Key Points of Test Method
Typical Test Cases
Test process of a 2500T cold chamber die-casting machine:
- Install clamping force tester (accuracy 0.5%) and power quality analyzer (accuracy 2%)
- Set the clamping force to 90% of the rated value (22500kN)
- Configure the die pad (size ≥0.8b×0.8b) according to standard requirements
- Continuously run 20 molds and record energy consumption data
Standard implementation recommendations
Manufacturer response strategies
- Technology upgrade: The use of servo drive system can reduce specific energy consumption by 30-45%
- Test preparation: The injection time and time need to be calibrated in advance class=instrument>Pressure building time measuring device
- Document marking: The measured specific energy consumption and the corresponding energy efficiency level must be indicated on the nameplate
User Purchase Guide
It is recommended to give priority to energy efficiency level 2 and above equipment, considering the following factors:
- For every 1×10-5 kW·h/(kN·module) reduction in specific energy consumption, approximately 150,000-200,000 kWh of electricity can be saved annually
- Compared with level 1 and level 3 equipment, the cost difference can be recovered in 3 years
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