The die forging press was not set up in the old factory area of Jiangzhong located on the west side of the East Lake, but applied for another industrial land along the river in the suburbs of Jiangcheng.

First, the heavy-duty die forging press equipment requires a special working environment, and if it is transformed on the basis of the existing plant, the movement is too large, and the process will be shut down.

Second, at the beginning, Chang Haonan was worried that the old team of Jiangcheng Heavy Machine Tool Factory would be difficult to clear up, which might have some negative impact on equipment manufacturing and the future production process.

Later, although Liao Xinhua did a good job of finishing the work and had no worries about this, the final plot had already been approved, so there was no need to use it in vain.

As the convoy moved from the city center to the suburbs, the scene outside the window became more and more desolate.

In 1998, Huaxia was far from the infrastructure maniac that everyone was familiar with in later generations, even if it was a regional central city like Jiangcheng, as long as it walked a little to the periphery of the city, it was still a scene of a large countryside.

Even after about halfway through, there is no pavement left.

Fortunately, the power of several cars in the convoy was okay, and I didn't let a group of people get down and push the carts forward.

"The infrastructure construction of the city still has to keep ......up."

After getting out of the car, Chang Haonan rubbed his head, which was a little dizzy because of the bumps along the way, and said in a somewhat unbearable tone:

"We can't manage other places for the time being, but it's not okay to have this kind of mud road around the new factory."

"There's no way, it's too far away from Jiangcheng City, otherwise it wouldn't have been approved so quickly and neatly."

Yan Yongnian, who got out of the car after Chang Haonan, took a deep breath of the suburban air.

A smell of cow dung.

His face froze, and after a pause, he continued:

"And when you first chose this land, didn't you plan a wharf, so that large-sized workpieces and equipment can be transported by ship, which will be a lot less troublesome."

It is impossible for people in this era to imagine how exaggerated the speed of urban construction in China will be more than ten years later.

For them, this place is basically equivalent to being in a ravine, and it is not the boundary of Jiangcheng at all.

Liao Xinhua also nodded:

"Yes, at the beginning, many comrades still had some concerns about this site, feeling that it was too desolate, the environment was too poor, there were no supporting facilities, and life was not convenient, and there were many people who complained."

"Later, the work started, the efficiency came up, and everyone's opinion changed, especially the security department and the transport team, there were too few things to worry about, and it had to be President Chang'......."

Speaking of this, he was finally interrupted by Chang Haonan waving his hand:

"Okay, okay, don't be too flattering, let's go inside."

"Mr. Chang, what I said is the truth, how can the truth be considered a compliment......"

Liao Xinhua's set of rhetoric is fluent, and it is obviously very sophisticated.

But he was right.

In fact, the reason why Chang Haonan chose the position of the die forging press in Jiangcheng was because of this consideration.

In the last life, the large-scale construction of the expressway network in China only began after 2006, even if this timeline will be advanced because of the butterfly effect, it will definitely not catch up with the project schedule of the die forging press.

Moreover, at the end of the 90s, law and order was far less stable than it was more than 20 years later.

Long-distance land transportation is still a very risky thing.

How high is it?

It was now in 1998, and in Hubei Province, where Jiangcheng is located, the slogan "Car Bandit Road Rage, Death Reward" was directly pulled out.

Not only cars, but also trains are hijacked.

Comparatively speaking, water transport is much more convenient and safer.

……

Compared with the surrounding areas that seem to be barren mountains, the situation in the factory area is much better.

After all, construction has been under construction for quite some time, and it is still the efficiency of semi-military management, the simple dock has been put into use, and the ground has been leveled and hardened.

It's a pity that there is no construction site artifact like a prefabricated house in these years, so there are all kinds of relatively simple iron houses around.

"This piece is the forging workshop that is planned to be used to house the die forging press."

Liao Xinhua pointed to an area in the direction of the factory near the wharf, which was obviously different from other hardened ground, and said:

"Because this place is too close to the river and the geological conditions are not good, in order to ensure that the foundation under the forging press does not settle and deviate, we specially let the construction party use high-grade reinforced concrete columns to hit the rock layer below, and then pour the foundation on top to ensure that the work needs of the equipment will be met for at least a century in the future."

Chang Haonan noticed that around that place, there were about dozens of people wearing blue overalls and hard hats.

However, since the color of the tooling can still be seen, it means that it is most likely not the civil engineering brother who is ashed.

"Those are the people from the construction party?"

He asked Yan Yongnian next to him.

The latter shook his head:

"No, in recent days, the construction party has been reinforcing the dock and preparing for the entry of heavy machinery and equipment behind, and people are not on the side of the forging work area."

"These are representatives sent by some of our project suppliers, and we will report back to you later on the relevant work preparations."

"Originally, I was going to have a meeting in the office of the old factory, but some things, especially the problems related to equipment assembly, were not clear on the spot, so they all came here."

Chang Haonan suddenly understood.

It turned out to be their own Party B.

It's a really good feeling.

He has been working as Party B for others all his life, and now he has finally turned over and can be Party A's father again.

Chang Haonan felt that he walked with a little wind.

"Let's go, go and meet them."

It is difficult to count the units directly or indirectly involved in the construction of die forging presses, and it is naturally impossible to send people all of them.

The people who are here today are mainly responsible for the core components of the C-plate, the main working cylinder, the support truss and the movable beam.

Even so, after Yan Yongnian's introduction, there were nearly twenty.

After another period of routine greetings, I finally got to the point.

"Mr. Chang, my name is Duan Hongbin, I am responsible for the manufacturing of the C-shaped plate of the rack, and I need to confirm some details with you before the process method is determined."

An engineer opens the long scroll of drawings he was carrying with him and lays them out on a drawing board prepared next to him.

In fact, when Duan Hongbin received this production task for the first time about a month ago, he was a little confused.

He has worked in the machinery manufacturing industry for 20 years, but he has not yet seen the situation where the design drawings have been finalized by the time they are sent to his hands.

However, according to the company's requirements, even so, he still has to go through the process before he can enter the production process.

Then, I found a lot of things that I didn't understand.

But Party A's father's request he didn't dare to change it casually, and it just happened that there was an opportunity to come to the scene to hold a technical analysis meeting, so he came on a business trip with the data.

"Here."

He pointed with his pen to a location at the top of the C-shaped plate on the drawing.

It has already been circled with a red pen and marked a lot, and it is obviously not just noticed.

"For the weld of the C-shaped plate, you need to weld along the width of the process, so that you need six welds to complete the manufacturing, but our previous specification was generally to minimize the number of welds, if you change it to longitudinal welding, you only need 4 ......"

"Generally speaking, it should be so, but this C-plate is a special case."

Chang Haonan took the pen from the other party's hand:

"In the design process, we have quantitatively calculated the stress of the workpiece corresponding to different welding methods, and found that the maximum principal stress is at the transition fillet of the mating area with the clamping beam backing plate, and the vertical weld is located just near this position, which will cause the weld to be subjected to the maximum shear stress."

"You are a professional in this area and should know that this is a problem that needs to be avoided in the process of selecting the welding position."

Duan Hongbin suddenly sweated.

Of course, he is aware of this principle, but the location of the so-called "maximum shear stress" has generally been based on experience in the past.

The longitudinal weld does not pass directly through the bolt hole and other parts, so it should be okay according to common sense.

But who would have thought......

It's a dimensionality reduction blow.

"Workpieces of this size class...... How accurate can stress calculations be? ”

Duan Hongbin wiped the sweat that didn't exist under the helmet and asked in an obviously unconfident tone.

"That's it, wait for you to follow Yan Gong, let him show you the results of our stress calculations, and then you will understand."

Chang Haonan stretched out his hand and gestured to Yan Yongnian, who was standing next to him, and then replied.

Stress field calculation is a step in the design process and is generally not included when the drawing is issued.

After all, most producers do the work of processing according to the drawings.

It's just that this producer is obviously a bit of a thorough curiosity, so it doesn't hurt for them to have a long insight.

"Eh, it's good, it's good......"

Duan Hongbin saw that he had found the steps, and hurriedly got off the donkey down the slope.

"Then Mr. Chang, the main working cylinder chooses the place where the two inner arcs intersect and fixes it with vertical holes, which is the same reason?"

Another engineer next to him helped his glasses and asked.

"That's right, the maximum principal stress and equivalent stress of the split working cylinder barrel are located at the bolt hole connecting the bottom of the cylinder and the cylinder barrel, and the problem of high stress is difficult to change, in contrast, although the structure we designed will also cause stress concentrations at the bottom, at least the position is not as fatal as the middle of the cylinder block."

“……”

More than half of these suppliers are "their own people" who have been placed under the jurisdiction of the Equipment Industry Department in this institutional adjustment, and most of them have only known about Chang Haonan's affairs before, but have not had direct contact.

Now Chang Haonan's rounds of answers are like flowing down, and it can be regarded as showing a little level in front of these old technicians.

Soon, the crowd's questions changed the style of painting:

"Mr. Chang, take a look at the main frame hoisting scheme we designed, and there are any gaps......

"This is the equipment scheme for supporting the trusses, and you can always see ......"

"Regarding the manufacture of movable beams, because of the slow cooling of large castings, the long solidification time of metal, and the outstanding effect of wall thickness, our current process is purely based on experience, it is difficult to control the casting process of such a large size product......

Yan Yongnian and Liao Xinhua, who had been squeezed into the periphery of the crowd, glanced at each other.

Yes, it's time for an on-site Q&A session......

(End of chapter)