Thank you to the book friend LZC880210, Big Brother Wyvern, Rick Dem, and the Whisperer of the Wind for the reward! Xiexie your support!

There are two more today!

[236] Build a fighting machine

Qingdao Sifang Locomotive Factory is now in full swing preparing to start replicating the new steam locomotive. In the 50 years since the establishment of the factory in 1900, in the hands of the imperialist powers and the Chang Kaishen comprador bourgeoisie, 19 large and small vehicle repair factories in Sifang Factory and other parts of China have only been responsible for repairs, and have not built a single car, nor have they the ability to manufacture complete vehicles.

When the central government's imitation task was issued, all the staff of the Sifang Factory were excited, but the excitement was excited, in this era when the locomotive manufacturing jishu was all monopolized in the hands of the great powers, how should this locomotive be built?

Historically, the Sifang Plant began with the imitation of the "Emperor-type" steam locomotive of Manchurian Railway, and in August 1950, it repaired and assembled a steam locomotive that was renamed the "Jiefang-type". Since then, the difficult journey towards locomotive manufacturing has begun.

After receiving the task assigned by Teng Daiyuan, the minister of railways, Li Guoming, the chief engineer of the Sifang Plant, immediately began to prepare for it. As an engineer graduated from the Department of Industrial Machinery of Tongji University, he is very clear about the current situation of railway vehicles in New China.

Li Guoming said to the factory director Wu Geng at that time: "Director Wu, plus our Sifang factory, all these vehicle factories in the country, in fact, are small and medium-sized repair shops, if we want to repair the railway with some simple accessories, or repair locomotives and road construction machinery, I think it's okay, or give us parts, if we want to assemble a machine head, I think we can do it, but if we are asked to build our own car, it is completely impossible at present." Where is the steelmaking furnace? Where is the forging machine? Where are the precision machining machines? Even if all the parts are made, where is the heat treatment equipment? ”

After saying this, Li Guoming looked at the factory director Wu Geng.

Wu Geng's eyes widened, and he said: "The central government didn't ask us to build a new model out of thin air now, but Minister Teng said that we should first use the materials shipped to imitate and assemble a machine head." ”

Li Guoming frowned and said: "Then you should first set a model and see which one is better to imitate." It's best to have a broken head, let's dismantle it first, and draw the parts one by one. Since there is no forging equipment, let's type it out by hand. Some key components must require high hardness, so let's start the soil method to create a heat-treated furnace, but we don't have carburizing and hardening jishu after heat treatment. ”

Wu Geng hurriedly said: "You are a dead brain, foreigners are not born with it, we can't shiyan slowly, we can always try it!" ”

Li Guoming said dejectedly: "......Then when will you try it?"

But when the drawings, manufacturing equipment, and production materials of the Ministry of Railways were transported to the Sifang Factory, Li Guoming immediately became excited.

In the Jishu section of the Sifang Factory, there are several drawing shelves on the four walls of a classroom-sized room, and several draftsmen are copying drawings on the drawings, and four large square tables in the center of the room are lined up, piled up with various newly shipped drawings and materials. Li Guoming stood on the edge of the table and lay on the table, looking at the drawings spread on the table in amazement.

As he excitedly and carefully reviewed every drawing in front of him, Li Guoming praised Zhang Huancheng, a member of the jishu under him: "This drawing is really good, and it actually draws a movement trajectory diagram of all moving parts!" The assemblies are mapped with a relational position! The installation conditions are clearly marked! Even the design calculation table has detailed data! There are even design manuals for each functional part! Who painted this! What a genius! This is definitely the most professional vehicle design drawing, which can only be made by professional locomotive design engineers who have worked in foreign locomotive factories! ”

Zhang Huancheng is 25 this year, and has been working in the factory for ten years since graduating from junior high school at the age of 15. Because of his diligence and ingenuity, he was promoted to jishu. Zhang Huancheng said happily when he heard this: "It's good now, we can build and assemble it ourselves as long as we follow the drawing, Li Gong, see if we can do it now." ”

Li Guoming's eyes widened, and he looked eagerly at the drawings and said: "There are too many drawings here at the moment, we have to decide which one to build first." This time, the equipment transported from the factory is too advanced, all kinds of machine tools are readily available, and 20 sets of welding equipment alone are given! ”

Zhang Huancheng nodded frequently and said: "At present, the masters in the factory are studying the equipment, and Master Lang Zhuo of the welding group said that he has never seen this kind of submerged arc welding equipment." According to the data, this submerged arc welding method manufactures pressure vessels, with stable quality, low dissolution rate of base metal, smooth and smooth solder joints, and high filling density. Master Lang also said that this submerged arc welding is much less soot than the previous ordinary surfacing welding. ”

Li Guoming said: "The less smoke, the higher the quality of the weld, I look at the boiler of the new head, it is manufactured according to the method of submerged arc welding of the pressure steel plate on the data, which is more cost-saving, labor-saving and time-saving than casting, and the weight can be greatly reduced." ”

At this time, the door of the Jishu branch was pushed open, and the factory director Wu Gengxing rushed in and said: "The installation and commissioning of the new thread grinder allocated by the central government has been completed!" Just now, Master Yuan came out of ten nuts and measured them with a newly arrived indexing measuring instrument, guess what? Hey! The positive and negative errors are all within two microns! There are also more than 30 lathes, milling machines, boring machines, etc., all with such precision! ”

Li Guoming lost his voice and said: "Two microns!" It's enough to build airplanes! The center can't be the wrong machine! Shouldn't such a machine tool be sent to the aircraft factory! ”

Director Wu immediately glared and scolded: "Fart! That's what we gave to the Sifang factory! Anyway, I gave it to me, and no one wants to take it again! I said, did you Lao Li choose a good model? I have even vacated the casting workshop for you, and the 250-ton horizontal cold chamber die-casting machine, 160-ton vertical cold chamber die-casting machine, 150 kg low-pressure casting machine, resin mixing mold machine and other equipment allocated by the central government have all been installed! There is also a bolt automatic pier cooling machine! Nut automatic cooling pier machine! 160 ton overhead crane! 630 tons of closed double-point double-action press! 800 ton multi-station automatic hot heading machine! Good fellows, they're all old, but they're all treasures I've never seen before! Master Bai in our machining workshop is trembling when he sees his legs, and he is learning to operate with a group of young men with the newly arrived jishu staff! I can tell you Lao Li, there are only models and other machines, and there are no machines and other models! Before all the masters learn how to operate, you must immediately set the model for me! I must build the first steam engine head of our Chinese before this year's National Day! This is not a steam engine! It's a gas machine! If you can't complete the task, Lao Li! I'm not done with you! ”