There was no such equipment during the day, but it was available early in the morning, yes, it must have been shipped overnight last night. This is a very advanced large-scale welding equipment, which can weld large parts of 30 to 40 meters long, such as the underframe of the subway, beams, car bodies and so on.

In the morning, the equipment was unpacked and transported to the factory for installation, so that the last few important pieces of equipment also entered the installation stage and were put into use, just around the corner!

In the Hedong plant, that is, in Jiuzhou Electric Branch, some parts related to the subway have already begun to be manufactured, such as IGBT products required by the subway, various motors required, electrical components required and so on.

At the traction motor production site, in addition to the Shaoshan series traction motor and DJ4 traction motor, several new members have been added, and they are the traction motors of the subway.

The first subway trial-produced by Jiuzhou Metro Branch is a type A car, which is also the most used model in China in the future.

The future urban subway in China is generally divided into three models, namely A, B, and C, among which the A-type car is the most, because this type of car has a large transportation capacity, which is very suitable for large cities with large populations, such as Shenhai City.

Tang Fei not only knows that the mainstream of urban subways in China in the future is A-type cars, but also knows that in history, Shenhai City basically also uses A-type cars, with 6-car or 8-car formations.

Since the mainstream of the future is the A-type car, the first subway trial-produced by Jiuzhou Metro is also a A-type car, and it may be considered to manufacture a B-type car in the future, but now at the beginning, it is still the first choice to manufacture A-type car.

The traction motor for the Model A car is being trial-produced at the production site. Metros, like electric locomotives, are powered by traction motors.

The traction system provides the required power and braking force for the train, and is used to control the train motor to work, and is composed of high-speed switches, main circuits, converter equipment and its control units, braking resistors and other components.

In Jiuzhou Motor, not only has begun to trial produce the first subway traction motor, but also has begun to trial produce the entire traction system, including high-speed switches, main circuits, converter equipment and its control units, braking resistors, etc.

DJ4's traction system also almost contains these things, Jiuzhou Motor has the experience of successfully manufacturing DJ4 traction system, and has a certain foundation and accumulation.

In addition, the whole set of technical data produced by the system is very detailed, and we have carried out trial production step by step according to the process data, and the progress is not bad.

At the Hedong plant, trial production of traction systems and subway control systems has begun, and the installation of equipment in the Hexi plant has also entered the final stage.

Especially in the machining workshop, the installation and commissioning of the equipment is basically completed, and the machining of some parts can be started.

Tang Fei specially went to the Hexi factory, that is, the Jiuzhou Metro Branch.

Ma Jianwei said happily: "Boss, everything is ready, I will take you to the production site to take a look at the production of some of our parts." ”

According to the plan, the production and manufacturing will be started this morning, first of all, the processing of some aluminum alloy parts, such as the cutting, cutting, milling and so on.

These belong to the preliminary process, after these aluminum alloy parts are processed, many will be sent to the welding workshop for a series of welding, into a single component.

These processed parts will be sent to the spraying workshop for painting, and the parts that are not painted will be sent to the final assembly workshop of the subway for final assembly.

Some processing processes in the early stage can be started, Tang Fei knew this, and specially came from the Hedong factory to see the production and manufacturing of the first batch of parts.

"Let's go to the production site and have a look. ”

Tang Fei was full of interest, and accompanied by Ma Jianwei, walked into one of the factories. This is an area of more than 10,000 square meters of professional machining plant, almost all the production equipment has been installed and commissioned, the training of workers has also been completed, can be on the job, can be manufactured.

In addition to the workers in overalls, there are also quite a few technicians. This was the production of the first subway. Even if there is detailed process and technical information, everyone does not dare to be careless, and many technicians guide at the production site.

When Tang Fei came in, he had already seen a lot of people busy, and various metal materials were already in place, the most of which were various aluminum alloy plates and profiles, which were also the main materials for the production and manufacture of subways.

A large water cutting machine has already started work, and on the working platform, a large aluminum alloy plate is placed, and the cutting machine is cutting.

Under high pressure, ordinary water has an amazing power, and the thin water beam seems to be indestructible, like cutting tofu, under the control of the CNC program, the aluminum alloy plate is cut into various required shapes.

These cut sheets will be welded into the parts on the subway. The car body is also welded from aluminum alloy plates, which need to be cut into various shapes according to the process requirements before welding, and then spliced and welded together.

Ma Jianwei said: "Boss, you see, the quality of this cut and formed plate is really good. ”

Tang Fei also saw that when the worker took the cut plate off the cutting platform, Tang Fei saw a smooth and flat incision, which represented good cutting quality.

There are several such water cutting machines throughout the production site, and they have all started to work one after another, cutting various aluminum alloy plates.

In addition to aluminum alloy plates, the most used in subway production and manufacturing are various aluminum alloy profiles. There are also workers who are unloading.

On the machine and equipment, the long aluminum alloy profile is cut off according to the process requirements to become the required length size for the next process.

Some plates or profiles that have been processed and need to be welded in the next process are already beveled to facilitate the next welding.

In addition to the cutting of plates and the cutting of profiles, some machining equipment is also starting to work, such as several large CNC milling machines, which are being milled to process the workpiece into the required shape and size.

Jiuzhou Metro Branch, has begun some parts of the pre-processing process, in the surrounding area, there are some mechanical processing factories are also processing subway spare parts, they mainly rely on the Red Star Factory, or Jiuzhou Industrial Group survival.

Such as Sanyou Machinery Processing Co., Ltd.

Their main business is to carry out the machining of various parts for customers, and they have two main customers, namely Jiuzhou Industrial Group and Hongxing Factory.

The machining of some general spare parts is generally handed over to some surrounding mechanical processing factories for processing, which can reduce management costs and make full use of the surrounding machining capacity.

Some of the general parts of Jiuzhou Metro Branch are processed in Sanyou Company. Tan Sanyou has a flexible mind, seeing that the construction scale of Jiuzhou Metro is so large, and the production and manufacturing will be a very advanced city subway, he knows that this means that there will be a lot of business in the future.

He gritted his teeth, added several mechanical processing equipment, including a CNC equipment, and recruited several workers, so that his own strength rose to a higher level.

Last time, Jiuzhou Metro invited bids and entrusted some general parts to external suppliers for processing, and Tan Sanyou got back a lot of business.

No, at the production site, various processes are underway. Tan Sanyou even guarded the production site in person, afraid of the slightest quality problem.

He knows that according to the current progress, it is estimated that the first batch of goods will be delivered to Jiuzhou Metro Branch in two days.

In the surrounding area, there are many small machining enterprises like Sanyou Company, among which as long as they are a little stronger, they have received processing business from Jiuzhou Metro.

For some general parts, Jiuzhou Metro has almost all handed over to these surrounding enterprises, and only processes some important and key parts by itself.

In Jiuzhou Metro, all the early processing processes are being carried out in an orderly manner, and the progress is relatively smooth. A few days later, in the huge welding workshop, some spare parts began to appear waiting to be welded.

There are cut aluminum alloy plates, as well as various profiles that have been blanked, and some are sent by peripheral suppliers.

In the office.

Ma Jianwei was happily reporting to Tang Fei, "Boss, it's unbelievable, our progress is so smooth, it is much beyond my expectations!"

yes, everything is going very well.

It stands to reason that there will be a lot of problems when the trial production has just begun, but in Jiuzhou Metro, there are fewer problems, especially the process problems in the trial production process, which are almost none.

This is really much beyond the expectations of many people, almost even all the technical personnel are the same, originally everyone is prepared enough, in case in the trial production process, exposed a lot of process and technical problems, we will work overtime, to solve them, so that the problem does not stay overnight.

Where to think, there are almost no process problems.

As long as the process parameters and process steps on the process data are strictly followed, there will definitely be no problems, and the quality of the processed workpiece or parts fully meets the requirements.

The only few small process problems are that some workers make their own claims and do not strictly follow the parameters and steps on the process data, which leads to some problems.

Now, no one dares to be smart anymore, everything is carried out in full accordance with the process parameters and process steps, there are fewer and fewer problems, and the trial production is getting smoother and smoother, and the progress is much faster than expected.

Tang Fei knows that these technical data are all from the system, and even the process technical data is the same.

Ma Jianwei said: "Boss, according to the current progress, in less than a week, our welding workshop will also be busy, and we can start welding some parts." ”

Tang Fei nodded, looking forward to this day.

……

Red Star Factory, very lively!

A brand-new electric locomotive, with big red flowers hanging on the front of the locomotive and red silk, is very festive, and is slowly driving out of the delivery workshop in the eyes of many people.

………

Continue to three more today, the first one will be sent!