Chapter 751

"That's not necessarily the case!"

Just as Director Wen finished speaking, Gu Lu softly spat out these words.

Director Wen was slightly stunned.

He frowned and asked, "Gu Lu, what do you mean?"

The corners of Gu Lu's mouth raised slightly, "Director Wen, we don't have to start all over again."

"Director Wen, come with me."

Said.

Gu Lu led Director Wen to the workbench.

Then, Gu Lu randomly pulled out a blank piece of drawing paper and used drawing tools to outline a simple diagram.

"This is……"

Seeing Gu Lu's schematic diagram that was gradually taking shape, Director Wen raised his eyebrows at first, and then seemed to realize something, and the look in his eyes became extremely serious.

A few minutes later.

Gu Lu's schematic diagram has been drawn.

Gu Lu clapped his hands and put the drawing pen aside, "Director Wen, this is what I think."

Gu Lu's diagram is very clear.

It can be said that Director Wen, an expert, can understand everything at a glance.

After understanding the information contained in Gu Lu's diagram, Director Wen secretly smacked his tongue in surprise and asked with a smile on his face.

"Integrating chromium alloy into molten steel and then processing it to produce a steel-chromium alloy composite material. Gu Lu, your idea seems to be highly feasible! How did you come up with the idea?"

That's right.

Gu Lu's plan is similar to Director Wen's. It also combines high-temperature resistant chromium alloy with low-cost steel.

only.

Director Wen's idea is to coat the surface of the steel plate with a chromium alloy coating.

Gu Lu's idea was to fuse chromium alloy and steel together at the molten steel stage, then temper the raw steel and process it into steel plates.

Facing Director Wen's praise, Gu Lu just waved his hands and smiled modestly, "Director Wen, I just stand on the shoulders of giants and look at the problem. If I hadn't been inspired by you, I wouldn't have had such an idea."

When Gu Lu said this, he was able to attribute part of the credit for this plan to Director Wen.

Director Wen instantly felt that his face was full of dignity, and he laughed with a bright red face.

"Without further ado, let's try it right away based on your diagram. According to my estimation, we have a high chance of success this time!"

After that, Director Wen took him downstairs to work in the material processing laboratory.

The melting temperature of chromium alloy is over 6,000 degrees Celsius.

therefore……

Gu Lu's plan of melting chromium alloy and mixing it with molten steel to make a steel-chromium alloy composite material is quite complicated in terms of processing technology.

I have been busy in the material processing laboratory downstairs for two days.

Only then did Gu Lu and Director Wen process a palm-sized steel-chromium alloy plate.

Put it into a high temperature experimental box.

Set the temperature at 3300 degrees.

Time passes minute by minute.

The steel-chromium alloy plate in the high-temperature experimental chamber did not undergo any deformation.

but……

Gu Lu and Director Wen did not show any joy on their faces.

This steel-chromium alloy plate must meet the standards.

The first requirement that needs to be met is to persist in an environment of 3,300 degrees Celsius for at least half an hour.

And now.

Less than ten minutes have passed.

The waiting time will become extremely long.

It was only thirty minutes, but it seemed as long as thirty hours had passed for Gu Lu and Director Wen.

but……

The results are quite gratifying.

The steel-chromium alloy plate held up.

It lasted thirty minutes.

Gu Lu and Director Wen looked at each other, their eyes showing joy again.

"Clip it out and take a look."

After the cooling was completed, Director Wen urged Gu Lu.

Gu Lu nodded and carefully prepared to use tweezers to pick out the steel plate.

But……

When Gu Lu just touched the steel-chromium alloy plate with his tweezers, he saw that the entire steel plate began to crack inch by inch.

A few seconds later.

This steel-chromium alloy plate was completely reduced to a pile of debris.

wry smile.

Gu Lu and Director Wen had a wry smile on their faces at the same time.

This is their 251st failure!

"Sure enough, it still doesn't work!" Director Wen sat down on the chair, looking completely helpless.

Gu Lu looked at the pile of debris in the high-temperature experiment box, touched his chin, pondered for a few seconds and then said, "It should be that the bonding force between the internal materials is not enough."

Before.

Gu Lu only considered the high temperature resistance properties of the material.

But they ignore the different internal bonding forces of different materials.

The addition of chromium alloy makes the original tight structure of steel become somewhat looser.

This also leads to.

Once heated to a high temperature, the entire material will become "brittle".

It is obviously not possible to use such materials to make the casing of a liquid hydrogen and liquid oxygen engine.

"But what method should be used to increase the stiffness of this shell material?"

Gu Lu frowned and thought hard.

…………

A plan that was originally full of confidence failed.

This is just adding insult to injury for Gu Lu and Director Wen.

But……

For scientific researchers, there is no such thing as giving up.

After failure,

You have to stand up again from where you failed.

Gu Lu and Director Wen were busy again.

After so many failures, the general direction of their research has been determined.

That is to prepare a material that is high temperature resistant, cheap and has high stiffness through composite processing of multiple materials.

Gu Lu and Director Wen proved through many failures that this process requires at least three materials to be combined.

The two materials, steel and chromium alloy, have been determined.

So what’s the last one left?

After more than half a month of exploration.

Gu Lu and Director Wen chose this material as graphite.

Graphite is an allotrope of the element carbon. Each carbon atom is surrounded by three other carbon atoms (arranged in multiple hexagons in a honeycomb pattern) and combined with covalent bonds to form a covalent molecule.
To be continued...