"Dream"

is the only scientific research ship in the world with 11,000 meters drilling capabilities

He uses 2mm arc

to solve the welding problem of high-pressure mud pipes

He is Zeng Xianhan

This is the story of him welding deep sea iron arms↓

Advance into the deep earth

He welded deep sea iron arms for "Dream"

"Through the earth's crust and into the deep earth"

This is the long-standing scientific dream of mankind

November 17, 2024

The first ocean drilling ship "Dream" independently designed and built by my country is officially included in the list

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This "deep sea heavy weapon"

overcomes many world-class technical problems

is the only scientific research ship in the world with 11,000 meters drilling capabilities

When the "Dream" deep-sea operation

A large amount of mud is pressed into the drill pipe with a total length of 11,000 meters under the sea surface

Spike out

Assisted drill bit cutting the rocks in the sea

Soil the deep sea

Supervised the drill bit to cut the deep sea

Supervised the deep sea

The pressure of the entire system

Equivalent to a car weighing one ton

Pressed on a fingernail

Zeng Xianhan

is an electric welding technician of China Shipbuilding Co., Ltd.

The team has undertaken the first time that such high pressure pipeline welding

There are no experiences in the early stage to learn from

Welded pipelines

When shooting X-ray flaw detection, some pores always appear

These tiny pores that are invisible to the naked eye

Once cracked during high-pressure operation, it will cause the entire high-pressure mud system to collapse

and even blow up

The "Dream" is a simultaneous operation of multiple systems

This problem is not solved as soon as possible

The overall construction progress will be delayed

Just when everyone was at a loss

Zeng Xianhan was calm

Turn into the welding laboratory

…

100% acceptance pass rate

He used 2mm arc to overcome the welding problem

Zeng Xianhan said

"The 'Dream' number is very large

It is so big that it can hold everyone's dreams

The 'Dream' number is very small

Small that the distance left to me is only 2mm..."

From the properties of different models of welding rods to the welding temperature

Zeng Xianhan repeatedly debugged it a little bit

Finally

He found the key to solve the problem

—

The height of arc combustion is always maintained at 2 mm

The welded pipes are used to detect the flaw

X-ray irradiation shows that the weld is perfect

No holes and no cracks

Holding a welding torch for 8 consecutive hours

360 degrees surrounding welding in complex environments

Spreading a thousand meters of pipes

Modeling trajectory over 300 meters

Distance between welding rod and weld

Must be kept at 2 mm

545 welds

2000 hours

100% acceptance pass rate

He used millimeter-level craftsmanship to conquer the deep-sea weld beads

After completing the welding task of the "Dream"

Zeng Xianhan said: "Now, I can finally give myself a thumbs up"

"Welding is endless"

He said he would also participate in the construction of more heavy weapons of the great powers

Zeng Xianhan from Dashan, Sichuan

Excellent welding skills

At the age of 19, he participated in the welding work of the world's first intelligent bulk carrier

"Dazhi"

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When he was 20 years old

He signed up for the World Skills Competition with confidence

So he was hit hard

Zeng Xianhan recalled: "I thought I had learned almost the same thing at that time

I found that people soldered much better than us

I realized

Welding is endless"

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Since he has truly calmed down

Continuously improving himself

At the age of 25

Surveyed to overcome the problem of welding "Dream" high-pressure mud pipes

At the age of 27

Become the welding leader of the shipyard

Currently

He is working on new welding methods

His goal is a world-class skill master

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Talking about the skilled craftsman in my mind

Zeng Xianhan said

“'Can' is a skillful response, a continuous pursuit of excellence

The brain must be alive, and the heart must be calm"

He said

I have to participate more

The construction of heavy weapons of a great country

I am very proud to participate in it"