Devi said on the spot that there was no need to check the footage.

"I won't check the footage to see what the results are?

I've always been very curious about this, and through the papers published by your company, I can probably figure out the general principle of this technology.

And there are three third-party testing agencies to confirm the authenticity of this technology for you.

I've just watched your experiments, and they're also mimicking the real natural environment, which is what I'm most interested in.

I want to see what the future of his application is on the surface of the car?"

This point is naturally known to everyone, Dewei came all the way from Germany to here, isn't it to verify the application of this technology in automotive surface paint?

Moreover, the experiment that Zhang Xiaofan is doing now is to simulate the natural environment, simulate whether the hardness of the surface of the car can be maintained at a standard after being stored for a long time in an extremely harsh weather environment?

After more than 1,000 cleanings, including weak alkalis, weak acids and detergents, as well as high temperatures and ultraviolet infrared rays, if the surface hardness can still maintain a reasonable range.

Then this technology is simply a great innovation for the automotive surface industry.

The method of detection is very simple.

The most common way to test the surface hardness of paint film is pencil hardness.

Pencil hardness is also known as pencil determination of coating film hardness. It is a test method and measurement system for calibrating the hardness of coating films. According to industry standards, pencil refills are rated 13 levels of hardness.

From the hardest 6h, it descends through 5h, 4h, 3h, 2h, h, and then through the soft and hard HB, and then from b, 2b to the softest 6b.

This is a scientific hardness system with strict hardness value definition. In the coating industry, this series of pencils of different hardness is used to check the hardness of the coating film, and the test results obtained are called the pencil hardness of the coating film.

The tester for measuring the hardness of the coated pencil is composed of two parts: a pencil fixture and a moving table for the coating sample. The coating film sample to be tested is fixed on the moving table face up, and the pencil is clamped on the pencil clamp and at a 45° angle with the plane of the coating film, and there is a heavy hammer at the upper end of the clamp to make the pen tip pressed on the coating film.

Shake the crocker, the mobile table will move forward with the model, let the pencil on the coating film for a plough-like stroke, each stroke, change a pencil, starting from the hardest pencil from hard to soft, one by one, until find out the pencil that the coating film is not scratched, the hardness of the pencil is the hardness of the tested coating film.

This operation should have been carried out by Zhang Xiaofan or a technician.

But Devi seemed very interested in this, and he decided to do it himself.

The operation of the pencil hardness tester is very simple, and it can basically be taught as soon as it is taught.

When Dewei was operating the instrument, Zhang Xiaofan saw it very clearly, and basically determined the results of the test.

"Yes 2h"

2h is the result of the test, this result makes Zhang Xiaofan very satisfied, in fact, the surface hardness of the coating film just coated will be about more than 2h, but it will be less than 3h.

Now, after more than 1,000 cleanings, after experiencing a series of harsh environments such as high temperatures, the surface hardness can also reach 2h.

You can't be satisfied with this.

"This surface hardness is very OK, and it seems that your company's technology can be applied to automotive surface coats on a large scale. ”

"When we first developed this technology, it was mainly used in automotive topcoats.

A technician in our technical department felt that car waxing was too cumbersome, and many car owners would forget to wax for a long time, resulting in insufficient hardness on the surface of the car.

It is very easy to damage the car, so this project is established.

Our company has invested hundreds of millions of yuan for the development of this project.

Some time ago, it was able to be applied to practice, but this is a technology that is beneficial to various automobile manufacturers.

It can be said that at present, we are the only powder coating company in the world. ”

Anyway, it doesn't cost money to brag, and only the people in the technical department know what is going on.

Devi will definitely not go to the technical department to inquire about the bottom line, he may also listen to it like a story.

Zhang Xiaofan also said it like a story, and everyone knows that everyone knows this kind of thing in business.

"I wonder if this technology can be applied to paint?"

In fact, this is the most important reason why Dewei personally came to the United States New Materials.

It's not that he looks down on powder coatings, it's that their current coating system, all the equipment can only be used for spraying oil-based paints.

And at present, no powder coating company can produce a base coat suitable for automotive topcoats.

It is because of the particularity of pearlescent pigments that powder coatings cannot be the same when making pearlescent pigments on the surface of automobiles.

In other words, when spraying a pearlescent pigment made of powder, the result may not be satisfactory, and there may be color differences on the same car topcoat.

This is because for the coating of automobile topcoats, the doors and body are painted separately.

Due to the particularity of pearlescent pigments, he cannot form an effective bond with solid powder particles in solid powder coatings.

In this way, although the pearlescent pigment and powder particles are mixed together, there are some pearlescent pigments, which is like another system.

As a result, when spraying with different spray guns, the color may be different.

This may result in some color differences between the color of the doors and the color of the body after assembly.

This is absolutely intolerable, and it is intolerable to basically all automobile companies.

A car is a person's façade, if the color of the door is not the same as the color of the body, then others will think that your car is anti-new, or has been in an accident and has been repainted.

Who else would buy such a car?

At present, basically 50% of Zhang Xiaofan's technicians are studying this technology, in order to make the powder particles and pearlescent pigments can achieve 99% effective bonding, so that even if different equipment sprays at different speeds, the color can still be consistent.

This is probably what Dewei is most worried about, so he asked Zhang Xiaofan if this technology is suitable for oil-based coatings.

Then Zhang Xiaofan shook his head very dryly.

"This technology is specifically designed for powder coatings, not for oil-based coatings!"

Zhang Xiaofan said it simply, but Dewei was very disappointed.

"It's a shame that this technology is very suitable for cars, but it's ......"

Zhang Xiaofan is really in a hurry, how can it not be applicable? Read the book and find the latest chapter by yourself? You are out, WeChat attention The beautiful editor will help you find the book!