The successful development of the new gun steel means that the key technical problems of the 52 times caliber 155mm artillery have been overcome, and at the same time, the other subsystems of the artillery project have not stopped moving forward, and the leaders of each sub-project have carried out a careful and meticulous in-depth analysis of the subsystem they are responsible for according to the data of the sample gun test, and have made corresponding improvements and perfections to the problems exposed in the test firing.

In terms of the overall aspect of artillery, Qi Junwen, who is responsible for this sub-item, found through the analysis of the detailed data and measured results of the sample gun test that the brake and retreat machine and the re-entry machine of the new gun are still too complicated, and the application effect of the muzzle brake is not obvious.

In terms of ammunition, Hu Qinghua, the person in charge of the subsystem, believes that after analyzing the shells in the test firing of the sample gun, the power of the new 155mm supporting ammunition may be improved, and the stability of the ammunition at the landing point needs to be improved。

In terms of auxiliary power and hydraulic system, although it did not participate in the actual test this time, the Yunnan Special Vehicle Factory still continuously improved the subsystem developed, mainly in the reliability, operability and maintainability of the entire subsystem, so that the new artillery in the auxiliary power and hydraulic system in terms of reliability is higher, more operable and more convenient to maintain.

All in all, after the test firing of the sample gun, the entire new artillery research and development team determined more than a dozen major improvement projects of the new artillery through the actual test results and the detailed test data afterwards, and there were dozens of small improvement suggestions. The overall performance of the 52 times caliber 155mm gun is more perfect.

With the determination of the new artillery improvement plan and the successful development of the new gun steel, this 52 times caliber 155mm gun is entering the manufacturing and assembly stage, because of this, the artillery assembly workshop located in Wanshan Factory these days can be described as a busy scene

"Slow down. Slow down, slow down!" Cui Mingjun, director of the military workshop of Wanshan Factory, wore a hard hat on his head and held a walkie-talkie in his hand to personally direct the gantry crane in the workshop to lift a gun barrel that had just completed rifling processing. Preparing to transfer to the next breech chrome plating device for the next processing operation, such a command operation would have been completed by an ordinary commander.

However, because of the failure of the last artillery test firing, whether it is the development personnel or the workers responsible for the production and manufacturing, they are holding their breath in their hearts, and they must complete the new artillery project no matter what.

After a lot of hard work, this new artillery barrel has completed most of the processing procedures. At this time, Cui Mingjun was like looking at his own child, staring closely at the artillery body tube that had been hoisted high by the gantry crane, for fear that any accident would hurt this precious body tube, so he kept reminding him with a walkie-talkie in his hand:

"Then use left, left, right! Slowly, slowly, slowly, and lightly," said Cui Mingjun, putting down the walkie-talkie, and then looked at his watch. Then he asked eagerly to the several employees in front of him who were about to accept the barrel into the artillery chrome device:

"Is the device ready?"

"Don't worry, Director Cui, it's already ready, just wait for the 'rice' to go to the pot!"

"Okay!" After listening to the employee's answer, Cui Mingjun nodded. Then he picked up the walkie-talkie again and shouted, "Put it down, put it down a little more!"

With Cui Mingjun's order, the more than eight-meter-long artillery barrel fell smoothly on the fixed bracket of the chrome plating device, and then several workers untied the cable tied to the artillery barrel, fixed the barrel, and then pressed the button. The chrome plating device was energized, and the chrome plating in the gun chamber began.

Cui Mingjun couldn't help but nod with satisfaction when he saw this, the tense nerves when the artillery barrel was hoisted just now were relaxed, and he couldn't help but feel a little dull pain in his throat, probably because the voice he shouted when he commanded the gantry crane just now was too loud, so he wanted to turn around and take a sip of the water cup on the small table behind him, but when he just turned around and didn't wait to take a step, a young and tall figure appeared in front of him, which made Cui Mingjun's eyes stare at all, and when he saw the person who came, he showed an excited smile on his face:

"Master Lu, when did you come?"

"It's been a while! Seeing that you were busy just now, I didn't bother you!" The person who came was none other than Lu Jiadong, the executive deputy director of the Wanshan Factory and the chief designer of the new artillery.

"How's it going? Is the artillery going well this time?"

"It's much smoother than last time!" Cui Mingjun wiped the beads of sweat on his forehead, and replied without hesitation: "During this time, under the call of Chief Master Lu, the technical learning of the whole factory has once again set off a new **, especially the workers of our artillery assembly workshop, who are hungry day and night to learn advanced technical knowledge and skills, and now our overall processing technology has improved a lot compared with the trial production of sample guns!"

As he spoke, Cui Mingjun's face showed a proud smile: "Because of this, the manufacturing progress of these two trial-produced new guns is also much faster, and the quality of the cannon steel this time is much better than before, it can be seen from the boring cutting and self-tightening of the body barrel that it is better than last time There is more than one level, so we are more confident this time, and now our first artillery barrel has been processed."

"Director Cui, Director Cui, the gun carriage has already entered the field, do you want to hang it over" Before Cui Mingjun finished speaking, the walkie-talkie in his hand rang again, Lu Jiadong saw this and hurriedly signaled Cui Mingjun to continue to be busy, and Cui Mingjun also knew that the official assembly was about to begin, and no one could be careless, so Cui Mingjun nodded slightly apologetically, and then picked up the water cup on the table, and after a few sips, he picked up the walkie-talkie and shouted loudly:

"Lift the gun carriage in, prepare the other departments, and start the final assembly!"

As soon as Cui Mingjun's voice fell, the entire artillery assembly workshop was busy again, and the gantry crane lifted the gun carriage with auxiliary power system that had just been unloaded at the door of the workshop to the workshop, and then carefully lifted the body tube that had been processed before and hit the brake and retreat machine, and slowly approached the gun carriage.

At the same time, Wang Chuanchen, Qi Junwen, Hu Qinghua, Zhu Haifeng, Qin Jingbin, and other leaders and development personnel of the new artillery development team at all levels also came to the assembly workshop one after another, quietly waiting for the birth of this new artillery

After an afternoon of intense assembly, near the end of work, a brand new 52 times caliber 155mm artillery finally unveiled its mystery, from a plain drawing, into the real reality in front of the eyes, this new artillery can be said to condense the artillery development team of many development personnel and factory workers efforts, has experienced failure, but now like a god of war standing between heaven and earth, in order to make this god of war glow its due spirit, the artillery development team headed by Lu Jiadong can be described as painstaking:

The whole new 52-caliber 155mm howitzer is divided into three parts: one is the take-off and landing part including the body tube, the loading device, and the cradle; the second is the gun carriage part including the sitting plate, the upper frame, the auxiliary propulsion device, the large frame, and the gun wheel; and the third is the part of the aiming device equipped with two aiming methods: direct aiming and indirect aiming.

The gun weighs 15 tons, the caliber is 155mm, the bore length is 8035mm (51.85 times the caliber), the barrel multiple is 52 times the caliber, the standard bore pressure is 6600 MPa, and it is equipped with a high-efficiency three-side chamber recoil muzzle brake with the same body tube, the maximum recoil distance is 1500mm, the recoil device can withstand resistance of 28 kN, and the maximum drag of the recoil when fired at the maximum elevation angle is 40 kN.

Because the rear seat of the gun is relatively large, the rear seat device is easy to be damaged, and it is not easy to replace, so Lu Jiadong proposed to place the rear seat device under the body barrel of the gun, in addition to providing certain protection for the back seat, it can also be quickly replaced and repaired, in addition, in order to meet the requirements of the rapid filling of the semi-automatic filling machine, the gun latch of the gun adopts a semi-automatic vertical wedge gun bolt, thereby greatly improving the loading speed.

The auxiliary power system is installed in the gun carriage, and a light structure is adopted, including the upper frame, the lower frame, the large frame, the hoe and the large frame wheel are automatically buried, and the power unit adopts a 75 kilowatt diesel engine, and at the same time it can also push the hydraulic device to provide support for the semi-automatic filling device and the gun wheel and the hoe to put down and put away, so as to reduce the burden of manpower and enhance the rapid response time, and the new artillery has also been optimized in terms of logistics maintenance, especially under field conditions, the daily maintenance of the gun is extremely convenient and fast!

In terms of manufacturing technology, the new artillery adopts advanced manufacturing technologies and processes such as electroslag remelting, laser quenching, and self-tightening of the body tube, and it is the application of many advanced design concepts and manufacturing technologies that make this new artillery an advanced large-caliber artillery comparable to any artillery in the world! )