Feng Xiaochen was also full of curiosity about Zhang Heping. This buyer was so enthusiastic, or liked to join in the fun. He got out of the car and ran far away to see the accident scene, which could be explained as gossip. He was busy working to find experts and technical workers, but he was too enthusiastic. Of course, if compared with Feng Xiaochen's own actions, Zhang Heping's performance seemed not too eye-catching, so why don't you show one or two Lei Fengs among the buyers?

Professor Bao, Deputy General Engineer Cao and others were also a little famous in their respective circles. After chatting with Li Guoxing, Shang Jinglun and others, they found some people they knew each other, and then they became familiar with each other in a few words. Everyone did not dare to delay, so they quickly came to the clamping car, met with Quan Jiancai, Wang Zhihua and others, and began to analyze the stress of the arm, and agreed on an emergency repair plan on this basis.

With these more professional people taking action, Feng Xiaochen became idle. However, everyone has already regarded him as the backbone and has to discuss everything with him. No one will regard him as an optional young man.

"We have calculated roughly just now that it is completely feasible to repair the arm by welding. If nothing unexpected happens, the repaired clamp truck can even transport the stator to Hezhou Power Plant, and then thoroughly overhaul it and replace the damaged arm."

Li Guoxing came to Feng Xiaochen and happily reported the results to him. Professor Bao from the Department of Mechanics of Northwestern University was a mechanics authority. He directly made a stress model on the spot and pulled everyone to calculate it for a long time. The conclusion was that the clamp truck could withstand the impact of the stator. Deputy Chief Engineer Cao from Jiangcheng Steel Plant analyzed the cause of the break of the steel plate on the support arm from the perspective of metal materials science, believing that this was just an accident, which was roughly related to the defects during the forging of the steel plate. As for the specific defects, he could only wait for the use of flaw detection equipment to detect.

Everyone also determined the emergency repair plan on the spot, that is, weld the break of the support arm and then weld some reinforcement ribs at other places. However, considering that the pressure under the support arm is extremely normal, problems in welding process must also be considered.

At this time, Tian Xing and others who left the site to find equipment also came back, bringing several tractors borrowed from the surrounding communes. The tow bucket was equipped with several electric welding machines, as well as oxygen cylinders, acetylene generators and other gas welding equipment. He also brought several electricians, dragging long cables, and I don’t know which unit it was pulled. The two railway army representatives found a unit next to them and pulled an emergency telephone line. In this way, the people on the scene could directly call and contact their respective leaders.

The Ministry of Machinery and the Ministry of Electric Power finally got the news that they went to the Ministry of Railways to discuss emergency matters. After discussion, the Ministry of Railways agreed to give 4 hours of emergency repair time. If the clamp truck cannot be repaired within the specified time, then they can only remove the stator so that the clamp truck can be driven away and the operation order of the Jinglong Line is restored.

The three ministries and commissions also agreed to form a joint investigation team immediately to rush to the scene to investigate the cause of the accident and determine the responsible party. The Ministry of Railways suspected that the Longshan Motor Factory concealed the real weight of the stator, which caused the support arm of the hydraulic rod of the clamp truck to be subjected to a force exceeding the load, causing damage to the support arm. The mechanical department and the power department insisted that the weight of the stator was not problematic, and the problem was that the transportation vehicles in the railway department had quality hazards.

Of course, all these quarrels can only be discussed later, emergency repairs are the top priority.

Li Guoxing reported the emergency repair plan discussed by everyone to the Ministry of Machinery through the military's emergency telephone line. The Ministry of Machinery organized experts to discuss it, and finally agreed to repair it according to the plan determined on the spot, and at the same time sent an expert team to carry flaw detection equipment and other supplies to support it. However, the expert team could only arrive at the scene the next day as soon as possible, so we could only start working here first.

"Master Li, see what we should do."

Feng Xiaochen accompanied an old worker who came to help and climbed to the clamp truck and began to discuss welding plans. The old worker was named Li Qingshan, a level 8 riveter at Tongyuan Boiler Factory in Songjiang Province. Experts have studied mechanics, metal materials, and of course, more of them are studied machinery. They can calculate the stress and believe that damaged parts can be repaired through welding. But when it comes to how to operate, they have to listen to the opinions of these riveters and welders.

Riveters are also called cold worker or sheet metal worker. They are jobs that specialize in the production of metal structures. Although they are called riveters, their technology is not limited to riveting operations, but also includes welding, bolt connections, etc., and have various skills such as welders and fitters. In fact, electric welding can also be called hot rivets, so there is a saying that "riveting and welding is not separated".

Rivers are not simple operators, but commanders in the production of metal structures. They are responsible for staking, laying materials according to drawings, and then organizing other types of jobs for installation. There is an old saying in the factory, "Rivers should be old, welders should be young", which means that rivers need rich experience, the older they are, the more valuable they are; while welders need good physical strength, good eyesight, and carefulness, so the younger they are, the more capable they are. Of course, the latter sentence does not mean that welders do not need technical accumulation, but that young welders have more advantages than older welders at the same level of technology.

This time, Li Qingshan took three apprentices to the capital to participate in a welder competition organized by several ministries and commissions, and happened to board the train. He heard that an accident occurred before and it was necessary to recruit outstanding welders to participate in the emergency repair, Li Qingshan brought his apprentices and Zhang Heping over.

"Oh, how could it be so cracked."

Li Qingshan squatted in front of the crack, looking at the broken steel plate, and kept stuttering.

"Yes, the 1-thick steel plate has been torn apart. How heavy is this thing?" Another welder who followed him to the clamp truck also stumbled. His name is Wang Jianguo, and he claimed to be a worker in a machinery factory in Shanbei Province. He is 26 years old, but he is already a fifth-level welder and is well-known in the mechanical system of Shanbei Province. It is a coincidence that he also went to Beijing to participate in a welder competition. When he heard the notice on the train radio, he came to help.

"I heard it weighs more than 3 tons, so it's quite a bit of strength to just turn it around." Li Qingshan said.

"But it doesn't matter, just re-weld it. Last time the beam of the gymnasium in our province cracked, I went to weld it. Now there is nothing wrong. I just got a young assaulter in the province because of this." Wang Jianguo said with a little show.

Feng Xiaochen glanced at Wang Jianguo and asked, "Master Wang, in your opinion, how should we weld it?"

Wang Jianguo gestured with his hands and said, "From here to this, open two bevels and weld them with No. 56 welding rod. Then, open four longitudinal grooves vertically on both sides, with depth and width of about 15 and 2 long. Inlay 14 steel bars, and then seal them. Last time I welded the beams of our provincial gymnasium, that's how I did it, and I brought several professors from the Provincial Institute of Technology to the town."

In just a short while, he had already told the story of welding the beams of the gym twice. It was probably the most brilliant thing he had ever done in his life. Feng Xiaochen felt a little unhappy when he heard him showing off, but he couldn't tell what the reason was. Think about it carefully, the fact that welding the beams of the gym could fall on him, the 26-year-old Qing Foreman, also shows that he really has some tricks. Even if he took it out and bragged, he couldn't say anything.

"Master Li, what do you think?" Feng Xiaochen turned to Li Qingshan again and asked.

Li Qingshan frowned slightly and said, "We call this method Xiao Wang's burial and riveting. It is indeed a good method. But I always feel that the crack is a bit wrong."

"Why is it wrong?" Before Feng Xiaochen could speak, Wang Jianguo rushed to ask questions. He had just given a good idea, but Li Qingshan came with a "but", which made Wang Jianguo quite unhappy.

Li Qingshan did not care much about Wang Jianguo's attitude, but pointed at the crack and said to Feng Xiaochen and Wang Jianguo: "Director Feng, Master Wang, look at it. This crack is cracked left and right, but the crack is not a neat crack, but is split between each other. I thought that when the train starts, it will move and stop, and this force will be backward and forward, not left and right. If you bury reinforcement ribs on both sides of the crack, you will be protected from the left and right strength, not front and back strength, I am worried that after welding like this, it will not play a big role."

Li Qingshan previously called Wang Jianguo Xiaowang. After being choked by him, he changed his words to call him Master Wang. Feng Xiaochen could feel the taste of this. As for whether Wang Jianguo felt it, it was hard to say. However, the question raised by Li Qingshan made Feng Xiaochen feel something.

During the stator transportation process, the force received by the hydraulic rod support arm is in the direction of the train. Although the torn mouth of the steel plate is in the left and right direction, that is, perpendicular to the direction of the force, it does not mean that a vertical force tear the steel plates open. Wang Jianguo proposed the plan to use eight steel bars to connect the steel plates at both ends of the crack, which obviously chose the wrong direction of strengthening.

"Master Li, I think you are too worried." Wang Jianguodao, "When I welded the beam of our provincial gymnasium, an expert said that the direction of the force was wrong, but other experts did not have this opinion. It was proved later that it was OK to weld like this. If eight steel bars were buried in, how much force could you hold? You would definitely not think of it?"

"This was not originally thought of, but calculated." Feng Xiaochen replied coldly to Wang Jianguo. Damn, you are a chatterbox. You can't do it without mentioning your bullshit in the gymnasium every word, right?
Chapter completed!