NB/SH/T 0383-2017 in English
VALIDCannon grease
- Issued on:2017-12-27
- Implemented on:2018-06-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$243.00
Introduction
Background of Standard Revision and Technological Evolution
NB/SH/T 0383-2017, as the core standard for military lubricating greases, inherited from the 1956 SYB 1502 system and has undergone five revisions to form the current version. This revision mainly responds to the modernization needs of artillery equipment:
| Technical dimension | Requirements of the 2005 version | Improvements of the 2017 version | Military value |
|---|---|---|---|
| Dropping point | ≥50℃ | ≥65℃ | Adaptability to high temperature shooting environment |
| Retention capacity | 0.6mg/cm² | 1.5mg/cm² | Extend the artillery maintenance cycle |
| New indicators | - | Low-temperature performance (-43°C)/Appearance/Cone penetration | Adaptability to cold-zone operations |
Analysis of key technical requirements
1. Protection performance system
The standard uses a triple protection mechanism to protect artillery metal components:
- Corrosion test: No corrosion on 45# steel and brass sheets at 100°C/3h
- Protective performance: Qualified for protection in a hot and humid environment at 50°C/30h
- Mechanical impurities ≤0.07%: Prevents barrel wear
2. Physical and chemical performance indicators
A case study on a certain type of self-propelled artillery demonstrates that maintaining a grease kinematic viscosity (at 100°C) within the range of 12-15 mm²/s ensures high-temperature lubricity while preventing recoil mechanism seizure. An acid value of ≤0.3 mgKOH/g effectively prevents chemical corrosion in ammunition.
Implementation Recommendations
1. Key Quality Control Points
- Mandatory factory inspection items: Appearance, dropping point, corrosion, moisture, and cone penetration
- Semi-annual inspection: Mechanical impurities and ash
- Type inspection trigger conditions: Raw material/process changes or production suspension of more than one year
2. Usage Specifications
Transport and store in accordance with SH/T 0164. Avoid the intrusion of impurities after opening the barrel. It is recommended to use a dedicated pressure grease injection equipment for barrel coating to ensure a 3-4mm uniform grease layer.
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