[absolutely vivid hotspot]
Dong Fei: Rocket motor produces link benchwork, be good at " the difficult treatment that spend aperture " . The alveolus on a few crucial parts, positional precision needs to come accurately 0.01 millimeter, "Old machine gets alveolus, test endurance, more test work force. " take root stage of 3 feet clamp weak wind of 20 his old cloud is small, bottom energy of life is very.
Sit before large radial drilling machine, the Dong Fei with big and tall figure () seeing a picture, also appear cabinet rise. This looks up and down before going up " big guy " : Rocker around pillar, circumgyrate rises fall; On nearby treatment stage, poriferous spare parts is being come out by cutting...
One " big " one " small " argue, need bottom is angry, more concern ethical dignity.
Engine, be spacecraft " the source of force " , of the rocket that be called " heart " ; Turbopump, be engine " core " ; Nozzle ring, be turbopump " lifeblood " . "This ' heart ' in ' lifeblood ' , concern the success or failure of emissive task directly. " ferial in, what Dong Fei is in charge of, it is these " lifeblood " manufacturing treatment.
Walk into Xi'an spaceflight base, spaceflight 6 courtyards in job shops of 7103 factories turbopump, the machine is plangent; Tens of stages are various one word discharges drilling machine, wear the worker that blue labour takes, get file to cut grind, skill in wushu is perfectness.
"This nozzle ring, it is high temperature alloy. Material is qualitative hard sticky, resemble ' the muscle that cut an ox ' . " by prentice the Dong Fei that surrounds an inter, pulling voice drilling, "The abnormity aperture on annulus, it is the most difficult that treatment rises. Your look it, exceeding irregular. Exceeding irregular..
Difficult, look to know: Diameter 40 centimeters nozzle ring, the aperture of the Er that pull tile of size of 18 big toe distributings equably above. Every aperture, entrance place is circular arc shape, by big decrescent; Exit is cone-shaped, by small greaten; Connecting among narrow larynx, axes wants to be aimed here. The most crucial is, aperture of every Er that pull tile has included angle, need tilts treatment.
Before some year, ever also wanted to introduce numerical control machine in the factory. Bring an expert from the foreign country, debugged machine of a month, but abandon: Aperture of the Er that pull tile is too irregular, and precision demand is extremely high, machinery is helpless.
"Numerical control is no good, finish artificially. " Dong Fei says, every machine an aperture, need cutting tool of 12 kinds of abnormity; Nozzle ring has 18 opening, exceed 200 working procedure in all, "Any link appear problem, the spare parts discarded as useless. " experiment through relapsing, dong Fei creates a new-style cutting tool, broken solution break a knife, gnaw the difficult problem such as the injury. The nozzle ring nowadays is machined, efficiency promoted 40% , percent of pass is achieved 100% .
Treatment plays hole of made of baked clay Er, not easy; Machine the fixed position aperture on turbine housing, more difficult -- its place is special, complete by " blind is operated " .
Follow Dong Fei comes to turbine housing by, but see at the moment half meters tall spare parts, cave among go in, deepness 40 centimeters. Sunken diameter is bottom, the dot of size of 2 sesame seed, it is fixed position aperture. "Alveolus is bottom, have 1 millimeter ply only. " Dong Fei tells a reporter, once operate inadvertent and penetrable alveolus, half an year of last a period of time is made, value millions yuan turbine housing, discard as useless entirely.
"Every time stiletto, resemble allocating and transport large drilling machine, take 40 centimeters long and thin scalpel, be in the place of focus of a disease of sesame seed size, have the operation of invaluable. " Dong Fei says, "Scalpel " once extend,receive housing, "Focus of a disease " complete by keep out. "Blind aperture is machined, complete by ' grind, listen, feeling ' manual experience. Complete by ' grind, listen, feeling ' manual experience..
Stunt is in personally, be not the result of a very short time. 1996, dong Fei of 19 years old graduates from spaceflight ability school, become apprentice of a benchwork. 23 years diligent is studied, component of turbopump of motor of nearly 10 thousand rockets was born on Dong Fei hand, captured " abnormity blind aperture is machined " wait for a lot of difficult problem. By last year, long march carrier rocket carries 3 second goddess in the moon 4 detector, represent the mankind first moon of seek by inquiry is rear. The group that Dong Fei leads, be in charge of among them the accurate treatment of 170 many component.
Help advance somebody's career " one branch is beautiful " , more need " Chun Manyuan " . Take a broad view is whole workshop, dong Fei is close 30 prentice in, "90 hind " occupy than 7 into, echelon formation of talent of benchwork of the youth in was being formed.
"The spaceflight career of the motherland, need a talented person most. " confront this group of young boys, the Dong Fei that Yan Aiyou adds often pour exhortation into sb's ear, "Nicety works, need calm most. Do not allow the slightest amount or degree lax, more the look does not get the least bit accident. Because of your hand in, holding hope and future. Holding hope and future..
This edition cartography: Shen Yiling
" People's Daily " (on April 16, 2019 07 edition)
