Suzhou Textile Engineering Society Miu Dingshu Senior Engineer

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China textile： What do you think about the main advantages and disadvantages of domestic and imported machinery？

miu dingshu： Foreign textile manufacturing industry still occupies highland， with purposes of high-tech， digital intelligent， high value-added， as well as environmental protection and energy saving to develop high-end products. Based on the global service network system， the Ethernet realizes fast， reliable online monitoring and real-time transmission of a large amount of data， and precise control and supervision of key quality parameters， optimizing high performance of textile machinery.

In recent years， domestic textile machinery enterprises make great progress in innovative design and fine manufacturing， especially for private enterprises with many “dark horses”， and break the foreign monopoly in high-tech to meet the require- ments of high-tech weaving special equipment at national strategic level. With the transformation of domestic textile industry chain from disordered production mode to order one， new spinning equipment can meet the requirement of big ration， high speed， high efficiency， and low energy consumption， and especially the change of varieties and adaptability can meet the market demand. It makes great breakthroughs in R&D of high-end textile machinery， development of intelligence and automation， and single connection， as well as the development and application of high-end equipment with high performance.

Disadvantages： There is a wide gap with foreign machinery in equipment stability， failure rate， service life and so on， and even in the several times of run-in period of new equipment， which exists various potential problems of hidden danger， reliability and stability， etc.. Actual speed is not ideal， such as air-jet loom， with prototype speed of 1000～1200rpm， but actual speed of 550～700rmp.

The reasons are as follows： mechanical imitation of foreign equipment components， without full understanding of performance requirements， and the key components of poor equipment； serious wear， big noise and high failure after speeding-up； the need of more efforts in fine processing， as well as longer machine and heavier load with increasing wear； high electrical fault will appear in the run-in period with improper transducer， encoder， sensor， motor and others； lack of related techniques and expert system can’t realize long-term stability of the process.

China Textile： What are the future trends of textile machinery？ What are the new features of the equipment of spinning， weaving and others？

Miu Dingshu： The general trends are production patterns of refinement， intelligence， automation， environmental protection and resource-saving， and sustainable business methods with high quality， brand and diversification of varieties.

The level of spinning equipment increases rapidly， with non twist， non joint， and non shuttle， continuity of single machine， low energy consumption and low fault， as well as automation， intelligent， high speed and network as the development direction of the textile technology. It will be normal for spinning equipment with automation， intelligent and network， and the representative siro spinning and compact spinning frame adopt a series of advanced elements， including modular design， electronic drafting， electronic lifting， energy saving motor， and energy saving spindle， roller without mechanical wave and high speed ring-traveller， and actual speed of over 20 thousand rpm/min at the international advanced level. Under the premise of high-speed development， it pays more emphases on personalization， marketization， intellectualization， modularity and interchange of parts for weaving machine. It can achieve a higher capacity and more efficient use of resources， by its innovative technology， online intelligent control and intelligent processing technology， optimized design components with aerodynamic and more efficient technology.

China Textile： What are the main reasons for the deficiency of equipment stability and reliability of domestic textile machinery？ What aspects need to be strengthened， if domestic textile machin- ery and imported equipment compete in the international market？

Miu Dingshu： Compared with foreign equipment， domestic machinery is in a vicious circle， with body shaking， serious wear， noise， high energy consumption， low efficiency and poor quality， if the speed is increased. Weak links still exist many problems， such as MTBF， runningin period， service life， the consistence of processing precision， etc..

There is still a big gap in the depth of R&D， market sensitivity and concept， so it is necessary to transform from imitation to creation， from speed to quality， from price-base to market-orientation. Textile machinery should speed up the adjustment of strategy with breakthrough， shorten the gap between international counterparts in the design， material selection， fine processing， technology， heat treatment， assembly debugging and so on， especially for the reliability and low failure rate， which must integrate the concept of zero fault in the design， and calculate the cost of reducing life cycle of products， including special basic parts， supporting equipment， as well as break inherent structure limitation of traditional equipment， basic materials and processing， and equipment configuration.