Abstract Zhang Yongguang, a master, argued with the teacher. From the factory floor to the door of the house, to the dinner table, even if the opinion reached an agreement on the same day, the next day to return to the factory, the debate may continue. In the eyes of the apprentice Sun Zhiguo and the other six apprentices, "Master and Teacher...
The master Zhang Yongguang argued with the teacher. From the factory floor to the door of the house, to the dinner table, even if the opinion reached an agreement on the same day, the next day to return to the factory, the debate may continue. In the eyes of the apprentice Sun Zhiguo and the other six apprentices, "Masters and teachers are experts in their respective fields. This kind of 'technical contest' between the two has long been commonplace." Although he learned 16 years of technology with the master, he is 37 years old. When Sun Zhiguo mentioned Zhang Yongguang, the label given was still an "encyclopedia." 
Zhang Yongguang, Chief Technician, Air Force Equipment Department
Craftsman temperament 1
10% more engrossing. Grinding out the "mirror" with bare hands. The finished blade is like a new product in Zhang Yongguang's studio, with large and small blades. Without his introduction, it is easy to mistake it for a new product. In the words of his disciple, Sun Zhiguo, he is like "the surgeon who operates the surgery" and also like "repairing ancient paintings." Parts that are worn out on the aero engine will be sent to him, and when they are fully repaired, they will be reintroduced.
Repairing the blade sounds simple, but it's actually complicated: it needs to go through tissue analysis, tensile testing, non-destructive testing, and simulate the aircraft for 360 hours of continuous work, then see if there are cracks and whether the welding position is fatigued. “It doesn’t have to be a lot of physical strength, but during the welding process, the heat will change the structure of the original intact parts. Once the original part is damaged, it will be scrapped.†People must be absorbed and have high vision requirements. It takes 15 to 20 minutes to fix a piece, and no mistakes are allowed. A long blade of fingers takes an hour to repair. Now, one person can only repair four or five pieces a day.
The blades repaired by Zhang Yongguang are almost the same as the new ones. Even the microscope can't see the difference. The dimensional accuracy and shape accuracy of the products are usually 0.001mm (that is, one thousandth of a millimeter). Sixty to one-seventh of a person's hair. This high precision means that the product size allows for a very small range of variation and minimal error with the design value. The product repaired by Zhang Yongguang has a surface roughness of Ra below 0.0125 microns, which is similar to the mirror surface. This is the highest level currently available, namely 14 levels. Even the machines and equipment in Germany and Japan are dwarfed by the work of Zhang Yongguang, whose surface roughness is only 10 to 11 levels.
In 2001, Zhang Yongguang was sent abroad to build an aircraft repair shop, responsible for the manufacture of abrasive tools and repairing military aviation engines. The other party requires the rubber mold surface to be as smooth as the phone case. The product made by Zhang Yongguang is like a mirror. The other party first praised it, and then asked "Which device did it do?" When I learned that it was done by hand, the other party was not happy. "Don't be kidding, how can you lie to us?" The subsequent explanation was useless. Only when Zhang Yongguang re-created one, this made the other party convinced. "He is very Happy to come and hug me."
Craftsman temperament 2
10% more excellence. 36 years of adherence to the "grinding" precision technology of one thousandth of a millimeter can everyone learn? Zhang Yongguang’s answer to this question is very modest. “It’s not too difficult to see it now. The key is to stick to it.†Like these apprentices, it’s been more than a decade, and it’s definitely an expert. In Zhang Yongguang's view, if it is only 10 days and half a month, it will almost never touch the door. It must undergo many years of tempering to achieve an accuracy of two thousandths and one thousandth of a millimeter.
How is Zhang Yongguang's accuracy of one thousandth of a millimeter? His method is a "grinding" word, and his "grinding" is 36 years. “The problem parts sent every day are different. It is necessary to find a solution according to the product, and design a special measurement tool.†After a long time, his mindset has undergone subtle changes. It may have been difficult at a certain level. The idea is "it should be able to find a way to do it well." Zhang Yongguang said that this is a process that makes perfection. This process is indeed too long, and it is as long as the ancient practice.
The repair of compressor blades and high-pressure turbine blades is strictly blocked by technology in foreign countries, and there is no ready-made experience and model for reference. The difficulty of the profiling technology of a project is that the blade profile of the compressor blade is twisted, the shape is thin, and the inlet and exhaust edges are very thin. At the same time, the original size, profile and surface roughness are not restored after welding. Damage to the original matrix, there is currently no domestic use of fixtures to achieve blade profiling examples. In the process of “practiceâ€, Zhang Yongguang developed a laser cladding repair technology for a certain type of engine high-pressure turbine blade and won the Army Science and Technology Progress Award.
In addition, Zhang Yongguang Studio is the first engine rotor and stator blade repair team in China, saving tens of millions of yuan in procurement funds every year.
In the 36 years of age, Zhang Yongguang “grinded†the fingerprints of six fingers. A friend joked that he couldn't use the latest Apple phone because it is a fingerprint lock.
According to reports, Zhang Yongguang has written a professional textbook to extract the "crushing law" and application of abrasive abrasives, the "wearing" rule and repair of the lap, the processing acquisition method and application of the precision micro-convex grinding platform, and is equipped by the air force. The department is listed as a compulsory course for the new staff theory and operation of the aviation repair system. He has designed, manufactured and modified hundreds of engine-specific tooling, which are widely used in aero engine repair, greatly improving repair efficiency and quality stability. Among them, a certain type of engine compressor blade grinding device has also obtained a national new utility patent.
Check out all the textbooks, the content of grinding is very small, only three or five pages, and people who know technology are also very few. The textbooks written by Zhang Yongguang let Sun Zhiguo's young technicians master a lot of expertise in grinding.
Craftsman temperament 3
10% more relentless pursuit of "professional contest" between husband and wife from the factory to the home
Zhang Yongguang’s wife is engaged in length measurement and is responsible for testing. Any product repaired by Zhang Yongguang's studio must be tested by her. Sun Zhiguo said that Shi Niang is an expert in the field of measurement. "Masters and teachers are authoritative figures in their respective fields." The couple often have professional arguments about the technical one-thousandth of a millimeter gap. Since both of them insist on their own point of view, it is often the case that the debate continues after going home from work.
The focus of debate between Zhang Yongguang's husband and wife is often the detection method and testing conditions. “The temperature on their side is 20 degrees. The temperature is controlled by the central air conditioner. The environment is much better. But we are more proficient in the detection methods. We have had arguments with everyone in their workshop.†Zhang Yongguang believes that many measurement locations And the measurement space can not be measured without special tools, so often run on both sides, compare each other, and ask each other questions.
"Before talking about the object, he engaged in engine-specific tooling design, I was engaged in measurement work. At that time, I was responsible for testing his products." Speaking of the dispute between the two, Zhang Yongguang’s wife said that he "had no mercy, found The error must be repaired."
In the wife's view, the products the husband made should satisfy both the satisfaction and the satisfaction of others. To this end, in Zhang Yongguang's home, there is often such a scene: the wife calculates by hand, the husband uses the computer to calculate, and finally compares the data.
In fact, Zhang Yongguang's husband and wife are also quite interesting in life. The wife loves "å” å¨", "He has to wash a piece of clothing for a long time. In the end, I only have to grab it and wash it quickly. Cutting vegetables and cooking is also better than me!"
Zhang Yongguang’s two brothers and fathers have worked in this line of his work. When I was young, Zhang Yongguang followed his father to make furniture, and finally he was able to do it himself. Are you more than your father? This question made him laugh. "I am advanced in philosophy, but what he passed to me is the spirit of hard work."
Zhang Yongguang is 59 years old this year. When he watches the computer for a long time, his eyes will be swollen and painful. When the apprentices repair the leaves, they must wear reading glasses. Asked when he retired, he only said one sentence, "I want to see the physical condition."
Modern Magnetic Track Lighting consist of aluminum profiles with integrated electric wires.The voltage inside the track is 48v ,safety.So DC48V magnetic track lighting system can also be used in places within easy reach .Available accessories and angle connectors allow you to create complex systems not only on the ceiling .
Magnetic track lighting is more and more popular on the market.But how to choose the thickness of magnetic track rail?
Must be thick enough.
This led magnet rail from production to transportation to installation and then to install the magnetic track light, must withstand many collisions and pressure, if your led track rail is only 1.2 or 1mm, has not yet been installed to deformation, installation can not conduct, these are generally used in party A price engineering or cheat you online shop. Have you ever seen a rail bend like that in your hand?
If too thin, transportation is the most easy to be deformation, conductive article easy to fall off, installed in the ceiling to extrusion deformation, which will influence the safe use of lamps .The greater risk, because of the deformation, the Magnetic Track Light not to live at the bottom of the iron absorption.Magnetic suction screens card is unstable, will be easy to spend down from ceiling to people, this is very big security hidden danger
/d0b33839289418b5c7664660b1.jpg" title="Poor Magnetic Track Rail" alt="Poor Magnetic Track Rail" />
There are 1.4mm, 1.5mm, 1.6mm, 1.8mm, 2.0mm,2.2mm thickness on the market.Normally enough material 2.0 can be used at ease, is more reliable quality.
magnetic track rail, Magnetic light rail ,led magnetic track,magnetic rail , magnetic lighting profile
Farwise Technology Co.,Ltd. , https://www.farwiselighting.com