GB/T 35994-2018 in English
VALIDGrain and oil machinery -Extensograph
- Issued on:2018-03-15
- Implemented on:2018-10-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 35994-2018粮油机械 面团拉伸仪》由TC270(全国粮油标准化技术委员会)归口,TC270SC4(全国粮油标准化技术委员会粮油机械分会)执行,主管部门为国家粮食和物资储备局。
Introduction
In-depth interpretation of the National Standard of the People's Republic of China GB/T 35994—2018
Background and significance of the standard
GB/T 35994—2018 "Grain and Oil Mechanical Dough Extensometer" is China's first professional standard for wheat flour quality testing. It aims to ensure accurate measurement of dough tensile properties through standardized instruments and methods. The standard was proposed by the State Grain Administration and is managed by the National Technical Committee for Grain and Oil Standardization.
Standard Framework and Technical Requirements
This standard constructs a complete dough extensometer testing system from term definitions, working principles to technical requirements and test methods. The following is a structured comparison of key contents:
| Chapter | Main Content | Technical Requirements |
|---|---|---|
| 3 Terms and Definitions | Key concepts such as dough extensometer and stretching curve are clarified | Based on GB/T14615, new industry-specific terms are added |
| 4 Working Principle | Measure dough characteristics through rounding, forming and stretching processes | Ensure measurement accuracy and repeatability |
| 5 Classification and Model | Divided into mechanical and electronic types, implemented according to Appendix A | Model compilation method reference example: JMLD150 (electronic dough extensometer with a test volume of 150g) |
Technical requirements and test methods
The standard specifies the technical requirements and test methods of the dough extensometer in detail to ensure that the performance of the instrument meets industry standards. The following are the key points:
The standard specifies the rounder speed of 83 r/min ± 3 r/min to ensure uniform dough. Through actual operation tests, it was found that excessive speed deviation will cause uneven dough forming, affecting the subsequent tensile test results.
In addition, the standard also clarifies the test accuracy requirements and stability test methods to ensure that the instrument can still meet the repeatability error requirements after 24 hours of continuous operation. Regarding safety performance, the standard strictly follows the provisions of GB 4706.1 and GB5226.1 to ensure the safety of operators.
Implementation suggestions and future development
To ensure the effective implementation of the standard, it is recommended that companies purchase dough extensometers:
- Select instruments that meet the requirements of GB/T 35994-2018
- Operate and maintain strictly in accordance with the standard
- Regularly calibrate the instrument to ensure measurement accuracy
In the future, with the continuous development of grain processing technology, the technology of dough extensometers will also evolve towards intelligence and automation. It is recommended that relevant companies pay close attention to industry trends and update equipment and technology in a timely manner to meet higher testing requirements.

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