JB/T 53030-1999
Classification of Product Quality for Counter-rotating Twin-screw Plastic Extruder (Internal Use)
异向双螺杆塑料挤出机 产品质量分等（内部使用）
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 产品质量等级 → 4 试验方法 → 5 抽样与评定方法 Foreword → 1 Scope → 2 Normative References → 3 Product Quality Grades → 4 Test Methods → 5 Sampling and Evaluation Methods
Scope
This standard specifies the quality grades, test methods, and sampling and evaluation methods for counter-rotating twin-screw plastic extruders (parallel twin-screw plastic extruders). This standard applies to the product quality classification of counter-rotating twin-screw plastic extruders (hereinafter referred to as extruders) as specified in JB/T 6491—1992 "Counter-rotating Twin-screw Plastic Extruder".
本标准规定了异向双螺杆塑料挤出机（平行双螺杆塑料挤出机）产品的质量等级、试验方法和抽样与评定方法。本标准适用于JB/T 6491—1992《异向双螺杆塑料挤出机》规定的异向双螺杆塑料挤出机（以下简称挤出机）产品质量分等。
Normative References
Keywords
Application Summary AI generated
Manufacturers, quality inspection agencies, and users apply this standard to evaluate the quality grade of counter-rotating twin-screw plastic extruders. By defining three quality levels—qualified, first-class, and superior—it enables consistent assessment of product performance and supports quality improvement and industry standardization.
本标准由塑料机械制造企业、质量检验机构和用户使用，用于对异向双螺杆塑料挤出机进行质量等级评定。通过划分合格品、一等品和优等品三个等级，帮助各方统一评价产品质量水平，促进产品性能提升和行业标准化。
AI Summary AI generated
This standard specifies the product quality classification for counter-rotating twin-screw plastic extruders, defining three grades: qualified, first-class, and superior. It covers performance parameters such as maximum production capacity, specific flow rate, and specific power, as well as structural and control requirements including over-torque protection, temperature control, cooling systems, and alarms. Test methods reference JB/T 6491, and sampling requires at least two units, with grading based on the lowest achieved index. It is used by manufacturers, inspection bodies, and users for quality evaluation.
本标准规定了异向双螺杆塑料挤出机的产品质量分等要求，包括合格品、一等品和优等品三个等级。标准涵盖性能参数（如最大生产能力、比流量、比功率）和结构与控制要求（如过扭矩保护、温度控制、冷却系统、报警装置等）。试验方法引用JB/T 6491，抽样与评定要求样本不少于2台，按最低指标定级。适用于制造厂、检验机构和用户进行质量评价。
Key Sentences extracted from text
本标准规定了异向双螺杆塑料挤出机（平行双螺杆塑料挤出机）产品的质量等级、试验方法和抽样与评定方法。
挤出机产品根据其质量水平和使用价值分为合格品、一等品和优等品三个等级。
挤出机产品除符合JB/T 6491 规定外，各等级的考核项目、指标要求还应符合表1、表2 的规定。
产品试验方法按JB/T 6491 规定。
评定产品质量等级，必须符合该等级全部考核项目的技术要求，否则按达到的最低一项指标定等级。
This standard specifies the quality grades, test methods, and sampling and evaluation methods for counter-rotating twin-screw plastic extruders (parallel twin-screw plastic extruders).
Extruder products are divided into three grades: qualified product, first-class product, and superior product, based on their quality level and use value.
In addition to complying with JB/T 6491, the assessment items and index requirements for each grade shall also comply with the provisions of Table 1 and Table 2.
The product test methods shall be in accordance with JB/T 6491.
The product quality grade shall be determined by meeting all the technical requirements of the assessment items for that grade; otherwise, the grade shall be determined by the lowest index achieved.
Standard Timeline
Changes from replaced version:
- 对原标准作了编辑性修改
- 主要技术内容没有变化
- Editorial modifications were made to the original standard.
- The main technical content remained unchanged.