Time: August 24th, 2005 17: 40: 50.
1In August 1999, a Delta-2 rocket was launched from the Kennedy Space Center in the United States, putting a satellite into a predetermined orbit. With the roar of the rocket taking off, another message carried by the rocket spread all over the world aerospace manufacturing industry: the connecting part of the rocket intermediate cabin was produced by Boeing company using a new welding process. This welding technique is called "friction stir welding".
Only five years later, the rocket tank welded by the same method in 2 1 1 Factory was successfully trial-produced-Chinese rocket technicians took a decisive step to the world advanced welding technology level.
The trouble is the first step.
2 1 1 The research of friction stir welding technology in factory began in 200 1.
In this year, Boeing Company of the United States began to produce a new Delta Ⅳ rocket tank with a diameter of 5 meters by friction stir welding. In the European Space Agency, Ariane rocket researchers are also actively exploring new areas of friction stir welding applications. However, in 2 1 1 factory, only a few technicians have heard of FSW, and most people know almost nothing about it.
In 200 1 year, the technicians of 2 1 1 factory learned that friction stir welding had been successfully applied to the production of Delta rocket, and immediately started the preliminary research. The results show that the welding process invented by 199 1 welding research institute has the advantages of small welding deformation, small residual stress, no need of shielding gas and filling materials, elimination of welding defects such as blowholes, inclusions and cracks, and no arc, smoke and noise pollution. At the same time, it can significantly reduce the cost, save materials, optimize the structure and reduce the structural weight of the aircraft. This will be an advanced and revolutionary welding technology in China's launch vehicle welding production.
The outstanding characteristics of friction stir welding technology have been highly valued by factory leaders who have been advocating technological innovation, and they decided to organize relevant personnel to conduct in-depth research. Wang Guoqing, the chief engineer, immediately said firmly: "As long as I am the chief engineer, I will successfully apply the friction stir welding technology to the production process of rocket tanks!"
The bold and decisive decision-maker laid a solid foundation for the research of friction stir welding technology in 2 1 1 plant.
At the beginning of the research, only a few technicians have heard of this internationally advanced welding technology. Because there is no technical information at hand and the factory does not have the test conditions, the research work is difficult to carry out. However, Liu, director of the Rocket Launch Office, is not afraid of difficulties. He seriously discusses the research plan with technicians and actively coordinates the relationship with other departments. Three graduate students, Du Yanfeng, Liu Jingduo and Zhang Lina, who are less than 30 years old and have only been in the factory for more than a year, bravely undertook arduous scientific research work.
As the name implies, the key of friction stir welding lies in "stirring", and the key of stirring process lies in the stirring head, but this vital part can't be bought in the market, so we can only develop it ourselves. At that time, three young researchers couldn't find information about the material, structure and size of the mixing head, so they had to explore and practice by themselves. When they finally made a hybrid head and couldn't wait to test it, they were "disappointed on a whim"-the hybrid head was broken in the material!
Faced with setbacks again and again, the three young people did not lose heart, but took courage to start again. In the past two years, they have selected a variety of materials, made dozens of mixing heads, and welded four or five hundred specimens successively, and finally successfully developed the mixing head, which made the experiment step by step successful. On September 18, 2003, they successfully welded the first specimen by friction stir welding, and a specimen with a weld length of 700 mm was successfully welded a few days later. They solemnly kept this experiment as a souvenir.
How many beats does life have?
The development of stirring head and the success of specimen welding are only the first step on the research road of friction stir welding. Young engineers immediately began another technological breakthrough-using friction stir welding technology to manufacture tank-scale specimens with a diameter of 500 mm. Compared with the welded specimen, the trial-manufacture of the storage tank shrinkage test specimen is more difficult. At that time, a set of trial-production equipment needed 6.5438+0 million yuan, and the unit could not get the money at the moment. Liu said categorically that we can solve it ourselves without money! Without funds, materials and equipment, testers "start from scratch". They are designers, craftsmen, welders and assemblers.
2004 is a crucial year for friction stir welding research. Just after the Spring Festival, the researchers involved in the project started intense scientific research work in 2 1 1 factory. After nearly two months' efforts, a scaled specimen with a diameter of 500 mm and a weld length of 800 mm was born in 2 1 1 Factory.
On June 8, 2004, preliminary results were achieved in the water pressure test of the test block. Seeing this gratifying result, some superior leaders who were skeptical about friction stir welding were very satisfied and immediately expressed their strong support in the future. At the end of the year, the engineers and technicians of 2 1 1 plant took a big step towards the engineering application stage of friction stir welding. In cooperation with related research institutes, the test tank with a diameter of 2.25m was successfully welded by friction stir welding, and the water pressure test was successfully carried out.
After the success of the experiment, Wang Guoqing was particularly pleased. As the chief engineer of 2 1 1 factory and the person in charge of this research project, he led the research of friction stir welding technology throughout. Now, he said with deep feelings: "The research of friction stir welding technology is a valuable exploration in the process technology of 2 1 1 plant. Its success fully proves that the technicians of 2 1 1 factory have the determination and ability to catch up with the world's advanced aerospace technology level. "
How many beats can life have? The research of friction stir welding technology has made the relevant personnel in 2 1 1 plant pass a rare test and exercise. Tank assembly workshop, surface treatment workshop, tooling production workshop, as well as technical, metallurgical, quality and other related departments cooperate with each other, which fully embodies the valuable team spirit.
For some young engineers and technicians who are directly involved in the research, the research of friction stir welding technology is a rare opportunity to combine theory with practice. They said: "Although it is difficult to finish one thing, we still have to work hard. The research on friction stir welding technology is a very meaningful thing, and we are proud to have the opportunity to participate in this matter. "
The successful test of tank scale specimen is only the beginning of friction stir welding research, and engineers still have a long way to go before this revolutionary welding process can be applied to engineering. At present, this technical research team is stepping up the research on the engineering of friction stir welding technology and the development of large-scale equipment, as well as the engineering of friction stir welding technology in the manufacture of rocket tanks, and constantly moving forward to the development of rocket tanks with larger diameters until the day of victory.
(Sun Xinrong)
No.1 Hospital 2 1 1 The opinion of the factory people is to put a "ruler".
2 1 1 factory has always regarded the opinions of the masses as a "ruler" to measure the effectiveness since the advanced education activities were launched. The factory set up a mass supervision and evaluation group to supervise the advanced education activities of 64 party branches throughout the process. Members of the mass supervision and appraisal team should often feedback the opinions and suggestions of the masses on party member and the Party organizations, communicate with the General Party Branch and the Party branch, and help party member and the Party organizations find, analyze and solve problems. The Party Committee of the factory proposed that in the three stages of advanced education, it is necessary to hold regular discussions with the mass supervision and evaluation team to see whether the masses are satisfied with the effect of the activities, whether they are satisfied or not, and form evaluation opinions. Only units that meet the satisfaction of the masses can be transferred to the next stage.
1 1 the institute of the sixth hospital went to Beijing to "send" the school.
There are more than 30 retirees in party member, where Shaanxi Sixth Hospital (1 1) is located. In order to ensure that advanced education activities do not leave a dead end, recently, the Institute arranged staff to "send" schools in Beijing, and sent learning materials and CDs related to advanced education activities to the Beijing branch of the retired Party General Branch to organize advanced education activities in Beijing and party member.
1 1 The staff visited the retired old party member one by one, distributed the relevant learning materials of advanced education activities to everyone, and had a heart-to-heart talk with every veteran comrade, expounding the importance, seriousness and urgency of advanced education activities, which fully mobilized everyone's enthusiasm and initiative to participate in the activities.
The Eighth Hospital is marked by the actual effect.
Since the educational activities of * * * party member in the Eighth Hospital entered the stage of analysis and appraisal, the party organizations of all units have attached great importance to this stage of work and organized each party member to conduct self-analysis. When writing party spirit analysis materials, every party member carefully wrote his own party spirit analysis materials on the basis of fully listening to the opinions of the masses and the feedback from his party branch.
During this period, the party organizations of all units in the hospital also held forums for non-party people, parties, mass supervisors' appraisal meetings, and inner-party democratic life meetings. Actively and humbly accept the supervision and evaluation of the masses, carefully analyze the opinions and suggestions of the masses, put forward improvement measures, establish a long-term mechanism, and do not go through the motions. Finally, it is marked by the satisfaction and dissatisfaction of the masses, recognition and disapproval, and the actual effect.
The 539 factory of Time Company set up a fund to help people in need.
Since the 539 factory of Aerospace Times Electronics Company launched the advanced education activities, it has insisted on "seeing practical results" as the focus of the advanced education activities. Based on the principle of doing good things and practical things for the masses, the factory cares about the lives of the masses and solves practical difficulties. The factory initiated the establishment of a poverty alleviation fund, which received a positive response from party member.
The Poverty Alleviation Fund is a voluntary donation from party member to help poor workers. Since the foundation of the needy people's fund, 73 party member took the lead in making donations, giving generously and giving their love. At present, the total amount of donations received by the factory's poverty alleviation fund has reached 1? More than 60,000 yuan. Although each comrade's donation is limited, it fully reflects party member's concern and help for every poor worker. (Youbenfeng, Shirley)