On December 23, 1991, an assessment team consisting of 40 experts from National Commission of Science, Technology and Industry for National Defense, Ministry of Aerospace, and foreign experts assessed that the technical specifications of the satellite plant ground reconstruction project of the Xichang Satellite Launch Center exceeded the requirements of the technical agreement and reached international standards. The advanced level can fully meet the requirements of launching foreign satellites.
American Hughes company experts praised the acceptance site: "The speed is so fast, the quality is 0K, and the Chinese people are amazing."
In 1991, China and Australia signed an agreement to launch the Australian Star, which was made in the United States.
Before the launch of the satellite, when experts from the United States and Australia visited Xichang Satellite Launch Base in our country, they believed that our satellite plant did not have the technical conditions for launching satellites made in the United States and required a comprehensive technological transformation of the ground of the satellite plant. The advanced level of resin products as a whole floor, the floor should also be crack-free, flame-retardant, wear-resistant, anti-corrosion, impact resistance, anti-static.
At that time, the Japanese proposed to do it and offered a quota of 5 million U.S. dollars; the Germans also had to rush to do it, which required 8 million U.S. dollars. However, the central government proposed that it should be based on the country and solve it by itself.
After several rounds of discussions with the leaders of Xichang Satellite Launch Base and the National Commission for Science, Technology and Industry for National Defense, the historic important task of the satellite plant surface reconstruction project finally landed in China Hanhua Changyuan Anticorrosive (Group) Co., Ltd. (namely Henan Preservative Enterprise Group The company's first company) shoulders. On September 3, 1991, the engineering technology agreement was signed.
There are more than 10 technical specifications required for the satellite plant floor. Among them, the antistatic index: the system resistance is 106 ~ 109Ω; wear resistance, impact resistance index: 500 times the load under the load up to 500 times, weight loss <3 mg, and to meet the requirements of handling heavy objects and cars, forklifts driving Corrosion resistance index: can be resistant to 30% to 40% nitric acid solution immersion, resistant to monomethyl hydrazine soak; appearance requirements: the surface is smooth, no crust, wrinkles, bubbles, uniform color; durable life: more than 10 years. There are also flame retardant indicators, pollution-free indicators, thickness indicators and other requirements.
Strict engineering requirements and strict technical conditions are required. In particular, some of the indicators are not achieved by the resins produced in the past in the past. These are huge challenges for Yonghua Changyuan Anticorrosion Company. To this end, the company invited famous domestic experts and scholars to form the R27581 research group. Under the guidance of experts, the company utilizes polar functional groups on the unsaturated polyester molecular chain, and after ionization modification reaction, it becomes a polymer material with antistatic properties, and its system resistance can be in the range of 105 to 109 Ω. Internal control. Compared with the method of adding an antistatic surfactant to a polymer material, the resin has a permanent conductive property, and its resistance value does not increase with the prolonged use time. The synthetic technology of this kind of resin was a domestic initiative at that time.
After two months of trial and error, after further solving various problems such as the mutual influence of various indicators, a set of formulas with the best results was finally determined.
After the successful pilot test, the company conducted a pilot test in a house in the courtyard of the National Defense Science and Technology Commission Design Institute. The overall floor test of 30 square meters was qualified. On November 3, 1991, the company signed a contract for the reconstruction of the satellite plant floor with Xichang Satellite Launch Base.
After surface treatment on the surface of the ground floor, dipping thin resin impregnated, coated with transitional thick resin, scrape and wipe the transition thin clay, scrape 3 to 7 mm resin mortar, scrape the thin clay mud cover, on the l ~ 3 closed layer and other processes The project was completed on December 20th of the same year.
After that, the two parties signed all the floor construction contracts for the remaining plants in August 1992, July 1993, and May 1994. The total cost of the project was only RMB 1 million, which saved the country a lot of foreign exchange.
This achievement was awarded the first prize for national scientific and technological achievements. Later, the technology was widely used in flooring projects such as computer control rooms, explosive and flammable plants, chemical plants, pharmaceutical factories, and home appliance manufacturing plants.
Marine machinery
The ready to use hydraulic power source and control system can realize various functions on the ship, reduce the labor intensity and make the operation efficiency higher.
Technical characteristics
01. Compact structure, convenient maintenance and high degree of automation
American Hughes company experts praised the acceptance site: "The speed is so fast, the quality is 0K, and the Chinese people are amazing."
In 1991, China and Australia signed an agreement to launch the Australian Star, which was made in the United States.
Before the launch of the satellite, when experts from the United States and Australia visited Xichang Satellite Launch Base in our country, they believed that our satellite plant did not have the technical conditions for launching satellites made in the United States and required a comprehensive technological transformation of the ground of the satellite plant. The advanced level of resin products as a whole floor, the floor should also be crack-free, flame-retardant, wear-resistant, anti-corrosion, impact resistance, anti-static.
At that time, the Japanese proposed to do it and offered a quota of 5 million U.S. dollars; the Germans also had to rush to do it, which required 8 million U.S. dollars. However, the central government proposed that it should be based on the country and solve it by itself.
After several rounds of discussions with the leaders of Xichang Satellite Launch Base and the National Commission for Science, Technology and Industry for National Defense, the historic important task of the satellite plant surface reconstruction project finally landed in China Hanhua Changyuan Anticorrosive (Group) Co., Ltd. (namely Henan Preservative Enterprise Group The company's first company) shoulders. On September 3, 1991, the engineering technology agreement was signed.
There are more than 10 technical specifications required for the satellite plant floor. Among them, the antistatic index: the system resistance is 106 ~ 109Ω; wear resistance, impact resistance index: 500 times the load under the load up to 500 times, weight loss <3 mg, and to meet the requirements of handling heavy objects and cars, forklifts driving Corrosion resistance index: can be resistant to 30% to 40% nitric acid solution immersion, resistant to monomethyl hydrazine soak; appearance requirements: the surface is smooth, no crust, wrinkles, bubbles, uniform color; durable life: more than 10 years. There are also flame retardant indicators, pollution-free indicators, thickness indicators and other requirements.
Strict engineering requirements and strict technical conditions are required. In particular, some of the indicators are not achieved by the resins produced in the past in the past. These are huge challenges for Yonghua Changyuan Anticorrosion Company. To this end, the company invited famous domestic experts and scholars to form the R27581 research group. Under the guidance of experts, the company utilizes polar functional groups on the unsaturated polyester molecular chain, and after ionization modification reaction, it becomes a polymer material with antistatic properties, and its system resistance can be in the range of 105 to 109 Ω. Internal control. Compared with the method of adding an antistatic surfactant to a polymer material, the resin has a permanent conductive property, and its resistance value does not increase with the prolonged use time. The synthetic technology of this kind of resin was a domestic initiative at that time.
After two months of trial and error, after further solving various problems such as the mutual influence of various indicators, a set of formulas with the best results was finally determined.
After the successful pilot test, the company conducted a pilot test in a house in the courtyard of the National Defense Science and Technology Commission Design Institute. The overall floor test of 30 square meters was qualified. On November 3, 1991, the company signed a contract for the reconstruction of the satellite plant floor with Xichang Satellite Launch Base.
After surface treatment on the surface of the ground floor, dipping thin resin impregnated, coated with transitional thick resin, scrape and wipe the transition thin clay, scrape 3 to 7 mm resin mortar, scrape the thin clay mud cover, on the l ~ 3 closed layer and other processes The project was completed on December 20th of the same year.
After that, the two parties signed all the floor construction contracts for the remaining plants in August 1992, July 1993, and May 1994. The total cost of the project was only RMB 1 million, which saved the country a lot of foreign exchange.
This achievement was awarded the first prize for national scientific and technological achievements. Later, the technology was widely used in flooring projects such as computer control rooms, explosive and flammable plants, chemical plants, pharmaceutical factories, and home appliance manufacturing plants.
The Marine Mechanical Hydraulic System is applied to the side push, valve control, steering gear, cargo winch, windlass, winch, boat crane, spiral elevator, hatch cover opening and closing device and other equipment on the ship to help them realize straight or rotating action, accurately adjust their speed and force, and effectively improve the use efficiency of the equipment.
Marine machinery
The ready to use hydraulic power source and control system can realize various functions on the ship, reduce the labor intensity and make the operation efficiency higher.
Technical characteristics
01. Compact structure, convenient maintenance and high degree of automation
02. Meet the requirements of harsh working environment
Winch Hydraulic System,Hydraulic Winch With Brake System,Marine Mechanical Hydraulic System,Ship Equipment
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