JB/T 53018-1999

Manufacturers, quality inspection agencies, and users of Roots vacuum pumps use this standard to classify and evaluate product quality grades. It ensures consistent performance and reliability by specifying key indicators such as ultimate pressure, pumping efficiency, noise, and mean time between failures. This standard is important for regulating the market, improving product quality, and protecting user interests.

该标准由真空泵制造企业、质量检验机构和用户使用，用于对罗茨真空泵进行质量等级划分和合格评定。它通过规定极限压力、抽气效率、噪声和平均无故障工作时间等关键指标，确保产品性能的一致性和可靠性。该标准对于规范市场、提升产品质量和保障用户利益具有重要意义。

This standard JB/T 53018-1999 replaces the 1992 version, with main revisions to the sampling method and noise indicators. It classifies Roots vacuum pumps into two grades: qualified and first-class, specifying assessment indicators such as ultimate pressure, pumping efficiency, noise, mean time between failures, and maximum compression ratio at zero flow. Inspection uses a single sampling plan with a sample size of 2 units per lot and an acceptance number of 0. The standard applies to single-stage two-lobe Roots vacuum pumps as specified in JB/T 7674, aiming to ensure product performance reliability and consistency through unified quality grading and evaluation methods.

本标准JB/T 53018-1999替代了1992年版本，主要修订了抽样方法和噪声指标。标准将罗茨真空泵分为合格品和一等品两个等级，规定了极限压力、抽气效率、噪声、平均无故障工作时间和零流量最大压缩比等考核指标。检验采用一次抽样方案，每批抽2台，合格判定数为0。标准适用于JB/T 7674规定的单级双叶罗茨真空泵，旨在通过统一的质量分级和评定方法，确保产品性能的可靠性和一致性。