The heroes who have opened up the territory are always worthy of respect, so Zhang Xiaofan expressed his understanding of the excitement of the personnel of the branch.

But understanding is understanding, and if you make some unforgivable mistakes in the future, you still have to leave the class.

In the early stage, if the production base is set up here, then confidentiality becomes extremely important.

Although Zhang Xiaofan is ready to publish this formula, in the early stage, confidentiality is still very important.

Because this is related to the market share, and whether the early investment can be recovered.

After a walk around Shenjiang, I returned to Yuezhou.

What makes people a little speechless is that before his feet touched the ground, Geely Automobile sent a message, saying that it was a product that had been determined to use new Japanese materials, and hoped that Zhang Xiaofan would guide him in the past.

In fact, there was really nothing to do with Zhang Xiaofan in the early stage, mainly the planning of some factories, but they seemed to think that Zhang Xiaofan was an all-rounder, and he was at ease.

This is probably because they don't know that Zhang Xiaofan is the boss of Zhimei New Materials.

In the process of talking about business, Zhang Xiaofan never looked at the problem from the perspective of the boss, but regarded himself as a business technology.

As for them calling Zhang Xiaofan Mr. Zhang, it is not because they know that Zhang Xiaofan is the boss, but because in today's society, as long as you are a technician, a salesman, or a boss with a little power, you can be called Mr. So-and-so.

The company didn't go back, so he turned around and got on the plane again and went to Shenjiang.

Although so far, Zhang Xiaofan has not touched, designed and built a powder coating line.

Don't say it's a powder coating line for automotive topcoats, it's an ordinary powder coating line, and Zhang Xiaofan has never built it.

So in fact, Zhang Xiaofan couldn't help much in the past, and the real design was to rely on professionals to conduct on-site testing and measurement, and then carry out scientific design.

Although Zhang Xiaofan has seen a lot of spraying lines, he has never seen powder coating lines for automotive topcoats.

So in the past, it was probably Geely Automobile that provided Zhang Xiaofan with a cover.

The purpose of Zhang Xiaofan's real thinking about the past is probably to increase his knowledge, after all, after seeing it once, what are the advantages and disadvantages, and when it comes to real production, it can still be seen at a glance.

Therefore, in case there is a need to involve a powder coating line for automotive topcoats in the future, Zhang Xiaofan still has something to talk about.

At present, a vacant land has been planned in the Jili Automobile Factory, and I am now building a steel frame structure workshop.

This is the fastest way to build a plant, and if it needs to be improved later, it can be poured around the plant without delaying normal production.

The whole plant is quite large, about 10,000 square meters, of course not, this is not only the powder coating line but also the storage area.

Money can make ghosts grind, this sentence is more true.

On the first day of Zhang Xiaofan's return, he was still laying the foundation.

By the third day, the steel frame structure had been laid, and even the insulation had to be covered in another day.

This is probably the so-called Chinese speed.

There are three gates in the whole workshop, one of which is connected to the sheet metal semi-finished product workshop.

This is to allow sheet metal semi-finished products to quickly enter the spraying workshop, which is an assembly line at the door of the shop.

The role of this assembly line is to carry out pre-treatment.

The effect and efficiency of the pre-treatment are related to the efficiency and quality of the subsequent spraying.

So this assembly line really can't be sloppy at all, but fortunately, Geely Automobile can invite the best pre-treatment equipment manufacturers in the country.

Pretreatment includes a series of processes such as alkali washing, pickling, water washing, phosphating, etc., and this whole set of processes will produce a large amount of sewage.

However, Geely Automobile has a lot of money, so the sewage treatment equipment is also quite perfect.

However, it is necessary to have a sewage conduit to direct the sewage to the sewage treatment plant.

In fact, spraying powder coatings and spraying paint coatings generally require pretreatment.

Therefore, it is necessary to have sewage treatment equipment.

This pre-treatment production line has little to do with Zhang Xiaofan.

Related to Zhang Xiaofan is a large spraying line that combines three spraying lines.

The main equipment of this large-scale spraying line is the large oven in the middle.

The design of the oven must be very well sealed, very well insulated, very good heat resistance, and the air flow in the interior space must be very uniform.

The interior space is well insulated, so as to save energy, and all lacquer baking generally has a minimum temperature of 130 degrees.

How to bake the paint, if you want to cure very completely, then the temperature should reach 180 degrees.

With such a high temperature, a lot of energy is actually required, not to mention such a huge baking oven.

In order to be able to improve thermal efficiency, the height of the oven must be carefully designed, too high and the total energy required will increase.

If it is too short, it may affect the movement of the workpiece.

This must be scientifically calculated, and this height must be kept within a relatively reasonable range.

Another is to ensure that the three production lines, in the oven, must have enough time.

Therefore, the design of the final oven is not a more formal rectangle or square, but a polygon, so as to reduce the volume in the oven as much as possible, thereby reducing energy consumption.

Another is to ensure that the time of the three lines in the oven is relatively sufficient.

The workpiece after pre-treatment goes through the first powder coating production line, which is mainly used for the spraying of the base coating.

This layer of paint is designed to allow the color paint and sheet metal to have higher strength adhesion.

This is not the same as spraying paint, which requires a nozzle to apply a primer.

Paint spray primer is used to make the surface leveling better, while powder coating primer is used to make the coating stronger.

So that's where powder coating comes in.

Paint is very susceptible to sagging, that is, after spraying, you will find that without a primer, the surface of the paint will have a similar effect to brushed metal.

It will appear one by one vertical or horizontal lines, which is very ugly, because the viscosity of the paint is very low, and when it is not cured, the paint will adhere to the sheet metal, forming the inherent texture of the sheet metal surface.

The viscosity of powder coatings is very high, so this phenomenon does not exist.

In order to increase the adhesion and strength of the paint film, Zhang Xiaofan sprayed the primer.

The semi-finished products after the primer spraying are transferred to the second production line for pigment spraying, and the semi-finished products after the pigment spraying will be transferred to the spraying line of the surface varnish.

What comes out of the last line is the final product, which can be installed in the car. You have to find the latest chapters by yourself to read books?