JB/T 54401-1999
Batch Mixer - Reliability Test Method
间歇式混砂机 可靠性试验方法
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 术语 → 4 指标 → 5 故障分类及判据 → 6 抽样及样机要求 → 7 试验方案 → 8 数据收集与处理 → 9 考核程序及结论 Foreword → 1 Scope → 2 Normative References → 3 Terms → 4 Indicators → 5 Fault Classification and Criteria → 6 Sampling and Prototype Requirements → 7 Test Plan → 8 Data Collection and Processing → 9 Assessment Procedure and Conclusion
Scope
This standard specifies the reliability indicators, fault classification and criteria, sampling and prototype requirements, test plan, data collection and processing, and certification procedures for batch mixers (hereinafter referred to as products). This standard is applicable to the reliability certification of wheel-type mixers used in foundry production.
本标准规定了间歇式混砂机（以下简称产品）可靠性指标，故障分类及判据，抽样及样机要求，试验方案，数据收集与处理和认定程序等内容。本标准适用于铸造生产用辗轮式混砂机的可靠性认定。
Normative References
Keywords
Application Summary AI generated
Foundry machinery manufacturers and users apply this standard to evaluate the reliability of batch mixers. It provides a systematic test method and fault classification to quantify mean time between failures and availability. This standard supports product quality improvement and reliability certification, enhancing overall equipment performance in foundry operations.
铸造机械制造企业和用户使用该标准来评估间歇式混砂机的可靠性水平。通过规定的试验方法和故障分类，可以量化设备的无故障工作时间和可用度。该标准为产品质量改进和可靠性认定提供了统一依据，有助于提升铸造设备的整体性能。
AI Summary AI generated
This standard specifies the reliability test method for batch mixers, including reliability indicators (equivalent fault MTBF and inherent availability), fault classification (critical, severe, minor, slight) with equivalent fault count calculation, sampling plan (10% of annual output, 5-10 units), test plan (timed-censored field test with replacement, 800 hours per unit), data collection and processing procedures, and certification process. It applies to wheel-type mixers used in foundry production.
本标准规定了间歇式混砂机可靠性试验的方法和要求，包括可靠性指标（如当量故障MTBF和固有可用度）、故障分类（致命、严重、一般、轻微）及当量故障数计算、抽样方案（按产量10%抽取，5-10台）、试验方案（有替换定时截尾现场试验，每台累计工作800小时）、数据收集与处理流程，以及考核认定程序。适用于铸造用辗轮式混砂机的可靠性认定。
Key Sentences extracted from text
本标准规定了间歇式混砂机（以下简称产品）可靠性指标，故障分类及判据，抽样及样机要求，试验方案，数据收集与处理和认定程序等内容。
采用故障次数按加权计算的平均无故障工作时间，见式（1）。
故障按严重程度分为四类，故障影响程度用当量故障数来评价。
抽样数量按企业年产量的10%抽取，一般不少于5台不超过10台；
认定结论以当量故障MTBF和固有可用度A的点估计值为准，其值必须达到认定目标值或产品标准中的规定值。
This standard specifies the reliability indicators, fault classification and criteria, sampling and prototype requirements, test plan, data collection and processing, and certification procedures for batch mixers.
The mean time between failures weighted by fault count is calculated using formula (1).
Faults are classified into four categories according to severity, and the impact is evaluated using equivalent fault count.
The sampling quantity is 10% of the annual production, generally not less than 5 units and not more than 10 units.
The assessment conclusion is based on the point estimates of equivalent fault MTBF and inherent availability A, which must meet the target values or specified values in the product standard.
Standard Timeline
Changes from replaced version:
- 标准名称由《间歇式混砂机 可靠性考核评定方法》改为《间歇式混砂机 可靠性试验方法》
- 按有关规定重新进行了编辑
- 主要技术内容没有变化
- Standard name changed from 'Batch Mixer - Reliability Assessment and Evaluation Method' to 'Batch Mixer - Reliability Test Method'
- Re-edited according to relevant regulations
- Main technical content unchanged