In terms of hydraulic products, Tianjin Special Precision Hydraulic Co., Ltd., Yuci Hydraulics Co., Ltd. Jinan Hydraulic Pump Co., Ltd., Shanghai Hangfa Machinery Co., Ltd. independently issued CBF-F4 series gear pumps, GB-FE gear pumps and CM-FE Gear motors, CBGJ gear pumps, NBX internal gear pumps, their main performance indicators such as pressure, speed, efficiency, noise, impact resistance, and pollution resistance are close to the international level of similar products. They are widely used in engineering machinery and other fields and have become an industry. Update products;
The P4V high pressure low noise vane pump developed by Zhejiang Xianju Yongling Hydraulic Machinery Co., Ltd. has complete specifications, high volumetric efficiency, internal control noise of 60~70dB(A), pressure of 21MPa, and the main performance of the product is at or close to the international level;
The steering vane pump and hydraulic variable-speed booster pump developed by Fuxin Hydraulic Parts Factory and Changzhi Hydraulics Co., Ltd. have excellent performance and have been used in domestic cars, and have been well received by users;
Beijing Huade Hydraulic Industry Group Co., Ltd. paid attention to the introduction of technology to digest and innovate, and successively developed a number of replacement products, such as variable motors, built-in motors, and high-pressure hydraulic valves. These products have greatly improved in structure. Among them, the A6V500 variable motor has been used in the slewing mechanism of large-scale construction machinery, mine metallurgy, shipbuilding, etc., and its product performance is close to the level of similar international products;
Hangzhou Seiko Hydraulic Electromechanical Manufacturing Co., Ltd. developed the PQ-E03B electro-hydraulic proportional flow pressure valve, based on the introduction of products to improve innovation, small size, weight is only two-thirds of similar products, the response speed is improved, the flow is stable Improved sexual performance and strong anti-pollution ability. It has been used in presses and other industries;
Yuci Oil Research Hydraulic Co., Ltd. undertook the development of a total of 5 types of hydraulic systems for the dam of the Three Gorges Water Control Project and the starter of the second stage of the power plant. Among them, the arc gate hoist is controlled synchronously with the proportional technology and the control precision is ±3mm. At present, there are 6 sets of diversion bottom hole arc gate hoists that have passed the phase acceptance inspection organized by the State Council, and the rest have passed the appraisal of the factory. The project quality is excellent, and it has won praises from users and made outstanding contributions to the national key projects. It is also the hydraulic industry in China. Win honors.
The hydraulic hose assembly pulse test bench developed by Tianjin Jingyan Engineering Machinery Transmission Co., Ltd. can change the pressure increase rate of pressurization according to the requirements. The high temperature and static dynamic data are collected and processed by the computer to implement the national standard and improve the Chinese hose and Its assembly performance provides test conditions.
In terms of pneumatic products, some research institutes and enterprises closely follow the international development direction and make the products appear: First, miniaturization, integration, combination, non-oil, and low energy consumption, as developed by Wuxi Pneumatic Technology Research Institute Co., Ltd. One example is the WPI series of pilot solenoid valves; the second is the application of electromechanical pneumatic products (devices), such as the QGAS-100 single-acting multi-stage steering telescopic cylinder developed by the Shanghai Pneumatic Complete Plant, Chongqing Southwest Air Hydraulics Co., Ltd. The company developed YG4040T foam presses.
For seal products, such as the modified PTFE engine seal developed by Qingdao Kepper Sealing Industry Co., Ltd., the service life reaches 300,000 km and the line speed reaches 50m/s, which provides a reliable seal for high-speed engines and has been used by FAW. Adopted by the company, with good economic benefits; The medium-high pressure piston type oil-free lubrication gas compressor developed by Guangzhou Institute of Machinery Science has a friction seal with a service life of 6000 hours, a line speed of 5m/s, high temperature resistance (200°C) and low temperature resistance , Provides reliable sealed products for domestic compression machinery; Dry gas seals developed by Dingming Seals Co., Ltd. of Tianjin New Technology Product Park, and C8 series of multi-spring mechanical seals developed by Dandong Clone Group Co., Ltd., with independent intellectual property rights, products The main performance has reached the international level and has been used in many fields such as petrochemical industry.
For hydraulic products, such as the limited-dual double-cavity fluid coupling developed by Dalian Hydraulic Coupling Plant, the main performance has reached the level of similar foreign products, with compact structure and small size. It is mainly used to start large inertia and heavy load conditions and is well received by users. YOTcp variable speed hydraulic coupler developed by Guangdong Zhongxing Hydraulic Transmission Co., Ltd. changes the structure of the box and has good rigidity, low vibration, reliable operation and close to product performance. Imported products, which have been used in Zhujiang, Handan and other steel mills to replace imported products.
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