No one knows whether the ironwood is the so-called ironwood mentioned by Mondstadt. As for the ironwood in the lumberyard, no one can see the reason after looking at it. Finally, I decided to ask the Ministry of Agriculture for legal advice.
Shi Lu - He is considered the most professional botanist in the Senate.
"It should be the same thing." Fashilu said, "This is a tree species from the tropical tropical zone. It is a common tree species in the mountains of Yunnan and Guangxi, and is also found in Guangdong. It is often used in Guangdong furniture in this time and space.
It’s not particularly expensive.”
"Lin Xianming said this is the best wood for shipbuilding, but there is not much left now."
"From the perspective of the demand for shipbuilding, there is of course not much ironwood, but for the purpose of making furniture, there is a lot of ironwood. Even in the Qing Dynasty and now, it is not particularly valuable." Fashilu said.
He shouted to an indigenous experimenter wearing a gray coat, "Get a sample of ironwood!"
A few minutes later, the experimenter brought a specimen box, and Fa Shilu opened it and showed it to everyone:
"This is a sample of the trunk of Ironwood. How do you like it? It feels a little shiny, right? The oil content of Ironwood is very high, and the seed oil content is 79%. It can almost be used as an oil crop. And its wood fibers are particularly long.
, very difficult to cut. Its strength is among the best among trees. Not only can it be used to build ships, it can also be used to make some mechanical accessories. Many of the mounts, frames and wheels of our towed artillery are also made of this. Although
It’s a little troublesome to process, but it’s very strong.”
Fashilu talked to the shipbuilders in a class-like tone.
"After all, can iron wood be used as a ship bearing?" Jiang Ye asked cautiously after he finished his talk.
"This is not my specialty anymore." Fashilu said, "When it comes to machinery, isn't it your specialty?"
Everyone who came to consult almost vomited blood. Doesn’t this mean that nothing was asked?
On the way out of the farm, a group of people debated whether to use iron wood as a propeller shaft based on Mond's "hearing". This is a large ship with thousands of tons. Once it is put into the water and tested, the propeller shaft will be ruined.
It had to be repaired in the dock again, which not only caused embarrassment but also affected the strategic goals of the entire crossing group.
"Practice is the only criterion for testing truth. I think we should take the most direct approach and do experiments first." Jiang Ye suggested that we modify one or two of the current steam boats to see the effect.
Steam boats are all equipped with 12-horsepower steam engines and are ready-made power boats. However, their propulsion method is quite special. It uses a so-called retractable propeller, which is equivalent to a kind of outboard propeller propulsion - the original shipyard was
This is used to avoid the problem of propeller installation. Of course, the price is that the transmission of the power unit becomes quite complicated.
"If the steam boat can be converted into a propeller, it will be of great significance for us to install the propeller modified from the 854, and at least we can accumulate experience."
"Yes, we will try every possible solution we can think of," Zhou Billy said.
After coordination with the Planning Institute, the Navy "generously" provided five steamships. This generosity was conditional. The six ships were all in poor condition due to frequent malfunctions during the Pearl River Battle. The Navy said
As long as they can be repaired, everyone in the Ministry of Machinery Industry can do whatever they want. Subsequently, at Zhou Bi's suggestion, an "854 Renovation Engineering Technology Group" was set up in the shipyard, and a number of people with certain knowledge in shipbuilding, machining and other aspects were selected.
Senior technicians participated and were stationed at the factory to solve various technical problems. As the project leader of the entire shipbuilding plan - the "First Shipbuilding Maintenance Plan".
Zhou Ke from the Ministry of Machinery Industry was appointed as the project leader. Others in the project team were unable to work full-time in the shipyard, so he was appointed as a permanent staff member. Zhou Ke graduated with a bachelor's degree in mechanics, and his second major was thermal energy engineering, which is considered to be related to shipbuilding.
It had something to do with it. He had a good foundation in fitter and lathe skills, and he also loved making ship models, so he became the most suitable person in charge of the shipbuilding project team among the veterans.
Zhou Ke is a stout man with a round face. He is said to be the project leader, but he actually doesn’t know much about shipbuilding. Like Zhou Bili and others, as a veteran engineer of the Ministry of Machinery Industry, he takes turns to serve as a project manager in various industrial enterprises.
As a factory supervisor, I have worked in all factories. I have become a typical so-called "generalist" who "can do everything".
The first thing he did after taking office was to solve the problems of the drive shaft and propeller.
The engineering team first pulled a large boat onto the slipway. Although the large boat had only been operating in Guangdong for two months, there were already a lot of barnacles on the bottom of the boat. The boatmen first carried out the work of clearing the bottom of the boat.
, Subsequently, Sun Li led people to dismantle the steam engine and boiler on the Dafa boat for overhaul.
The propeller is relatively easy to solve. Although they do not have the actual propeller, they do have a complete set of CAD drawings of various propellers. Jiang Ye means to directly make one with a machining center, and then use it to make sand molds and manufacture them in batches.
, Zhou Ke felt that this was a bit of a fuss.
"Don't we have the motor boat on the Fengcheng wheel? There is a propeller in the spare parts. We can use that as a mold for sand casting."
Xiao Bailang first made a clay mold of the propeller, then turned it into a hard mold, and finally cast the first propeller for a small boat out of cast iron.
Zhou Ke first used a computer to determine the center of gravity and center point. After obtaining the data, he drilled holes in the hull to install the bushings and shafts. He installed iron wood propellers on the No. 1 test boat. The results proved that iron wood propellers were used.
Limu is feasible. During the sea trial, a small amount of water did enter the shaft sleeve at the beginning, but it stopped before it reached the point where water needed to be scooped out.
However, after all, the Dafa boat is a small boat with only a few dozen tons and 12 horsepower. The 854 has a displacement of more than 1,200 tons and a 500-horsepower steam engine. No one in the entire project team dares to give a vouch for whether it is reliable to use wooden shafts for such a ship.
Then they tried various shaft sealing methods. In fact, all the dynamic sealing methods given by everyone are feasible. However, there are more or less various problems, and some processing methods are not up to the standard.
Yes, the level of some materials is not good. Basically, the design ideas far exceed the processing capabilities and material level.
Packing sealing is the simplest of all sealing methods, and the effect is pretty good - the speed of water ingress is not very fast. If the ship is equipped with a water pump, this water intrusion will not be a big problem. Moreover, if there is a steam engine, pumping water will not be a burden.
However, there has never been a good solution to the heat dissipation problem. With 500 horsepower and a speed of several hundred revolutions per minute, the heat generated by friction is very powerful. It is almost equivalent to a small electric furnace with one or two kilowatts. If there is no means of heat dissipation at all.
, reaching a red-hot state is common.
Finally, Zhou Ke decided to use a liquid oil seal with circulating cooling. The sealing oil tank is located above the propeller drive shaft, and oil is slowly injected into the shaft box through gravity. The oil has a certain pressure and will slowly pass through the shaft box.
It leaks outward to resist the infiltration of seawater. The oil itself can cool the transmission shaft. Most of the oil is recovered through the pump, and then re-injected into the oil tank after external cooling for recycling.
The structure of this oil seal is relatively simple. What is a little more complicated is the oil recovery pipeline and power. And the grease used can be castor oil or coconut oil - both of which can be supplied by the Planning Institute.
"Are you sure this plan is feasible?" Zhan Wuya looked at the model Zhou Ke brought to his office.
"It's feasible." Zhou Ke opened the model - a very simple model but with a large scale - in order to fully display the details, "We conducted a shipping test on the No. 5 test boat, and also conducted a land operation test and a water test.
Platform test, combined with a water pump, the leakage rate of the shaft seal using oil seal is completely within the controllable range. I just don’t know whether coconut oil or castor oil can be fully supplied. After all, it is not 100% recycled and there is a certain loss. Sealing oil must be supplied for a long time.
."
"It's not a big problem. As long as you can ensure that most of the oil can be recycled - people in the chemical industry can use any oil anyway, and the sealing oil that is replaced is mostly used to make soap." Zhan Wuya knows that whether it is castor oil or coconut oil
, there is still a certain amount of stock in the inventory of the Planning Institute. Especially coconut oil, the supply has been quite stable since the establishment of the Sanya base. As for castor oil, the Central Government Administration has mobilized students through the Ministry of Education to use fragmented land at home and in school.
This plant is widely cultivated. Before the advent of mineral oil, castor oil was considered a good industrial oil.
Zhou Ke said excitedly: "That's good! Next we have to solve the problem of large propellers."
"One more thing." Zhan Wuya picked up a thick document bag on the table, "This is from Qian Shuiting, and it's about sailing."
"Sail rigging? Aren't you sure to use a horizontal sail?"
"According to Qian Shuiting, full-sail rigging has high requirements for sailors..."
"We have determined to use the power machine to operate the sail."
"According to him, fully mechanized sailing cannot be achieved with a fully horizontal sail, and a considerable workload still has to be solved by sailors climbing the mast. He suggested switching to a so-called simpler operation..." Zhan Wuya was momentary.
I couldn't think of this term - barquentine style - "Forget it, you know it anyway, he has written it very clearly in it, and there are drawings."
"Understood. I'll inform the sail-making workshop when I get back."
Zhan Wuya said: "Also, you have to submit a report to me: about applying for the manufacture of steel wire ropes and thin iron chains with the following specifications." He gave him a document, "Huang Tianyu told me yesterday that both of these are
Things that are necessary for power sail control auxiliary equipment, but the industrial sector has never produced these, it is equivalent to 'special manufacturing', and you, the project leader, have to make a proposal."
"Okay. I really haven't thought about being able to mechanize sailing."
"According to Mr. Wen, the last and most modern all-steel sailing ship - used to transport bulk cargo such as wheat, struvite and Chilean saltpeter - only needs more than 20 sailors, and the sails are fully mechanized.
It would be great if we also have a ship like this sometime."
After Zhou Ke left the office, he went to the "fire cellar", which is what everyone calls the department managed by Xiao Bailang. In the industrial system, fire-related industries such as kilns and castings are under his control, from the firing of crystal
From clear bone china and glass to large black and thick castings, from industrial equipment to sanitary ware for personal use, everything is under his management. In more than two years, Xiao Bailang, who is in Yushu Linfeng Saipanan, has been transformed.
It must be dry and dark.
Xiao Bailang is currently organizing his workers to make clay molds for the wooden propeller. This wooden propeller has a good origin. It is a "prototype" manufactured by a machining center. There are some large and medium-sized propellers in reserve in the warehouse of the Planning Institute - that
It is a spare part prepared for Fengcheng and other modern ships. But Zhou Ke didn't know whether it was suitable. So he asked someone to first select the propeller type according to the 854 modified ship type, and then extracted the corresponding CAD drawings and made certain optimization modifications.
Finally, it is input into the machining center to produce full-size wooden molds.
Workers used the wooden mold to first make a clay mold, and then sanded the clay mold to make a hard mold. Then the wooden mold was properly stored.
The material for making propellers, based on the experience of making propellers for small boats last time, directly used aluminum brass. Although Chuanzhong cannot smelt aluminum for the time being, aluminum has many sources and the smelting technology is not high, so it is relatively easy to produce it yourself. Compared with
It is much easier to source non-ferrous metals such as manganese bronze and nickel-aluminum bronze.
The newly smelted and cast aluminum brass ingots transported from the workshop of the Metallurgical Department are piled next to the crucible boiler, waiting to be melted and cast.
"The casting only takes one day, and making the mold is very laborious!" Xiao Bailang exhaled, his face was dark, and a black and oily labor protection mask hung around his neck. "I want to tell Zhan Wuya,
If you want a bigger crucible boiler, use continuous casting." He looked at Zhou Ke, "You won't equip every kind of ship with a propeller, right?"
"No problem, I'm going to use this propeller at the next stage. It should be no problem to use the same propeller for a 1,200-ton ship and a 500-ton ship. For larger ships, use twin propellers for propulsion."
"Well," Xiao Bailang sat down on the stool. Immediately, a girl in blue uniform brought a large cup of bubbling salt soda water and asked him to drink it in one gulp. Zhou Ke saw that the girl was leaving
She has refreshing short ear-length hair, a pretty face, and a rare and full breasts - a childlike face. I can't help but wonder in my heart: When did I buy a life secretary like this before?
"Hmph, are you jealous?" Xiao Bailang glanced at him sideways.
"This girl is pretty good. Why haven't I seen it before? Could it be that she opened the back door for you?"
"This is S-level. You only spend C-level money, and of course you only get a dark-skinned girl to show off." Xiao Bailang said proudly, "I didn't go through the back door, I got it through a lottery."
"I don't believe you are so lucky! It must be the people on the executive committee who opened the back door for you!"
"What's the 'open the back door' for me?" Xiao Bailang became angry, "Don't blame the executive committee for your suffering." He tilted his chin towards the girl, "Come on, sing for me! I'll make you losers so angry."
"
The girl didn't dare to neglect, and quickly sang a Cantonese tune that she didn't know was called. The workers stood three feet away from Xiao Bailang with an expression of awe, listening to the tune - the tune of Chief Xiao.
My concubine sang the ditty well and everyone loved to listen to it. Everyone also admired Chief Xiao's heroic spirit in leading women to work in the factory.
The girl's voice was delicate and soft, which made Zhou Ke's heart shudder. He couldn't help but secretly feel jealous. Could it be that the executive committee really did some tricks in the allocation of maids? Even with Xiao Bailang's work situation,
He said that it was appropriate to have an S-class maid, but such secret operations should be resolutely put to an end! He was already dissatisfied with the tendency of the executive committee, and now he became more suspicious.
As for the large drive shafts, connecting rods and cranks used to drive the propellers, the arsenal of Bobu is responsible for manufacturing them. They have large forging machines, which were originally installed for forging cannons and were also used to forge some large workpieces. These
The forging machine is simpler than the forging equipment brought by the time traveler from the old time and space, but it is far superior to the equipment brought in in terms of machine size and forging capacity. The forging workshop of the arsenal is also the busiest workshop in the manufacturing director department. Every day
Forging is carried out every night, and part of the iron keels and ribs used to build new ships are also forged here.
In the arsenal, steam engines for ships are still being manufactured. Since the finished products of steam engines and boilers are relatively heavy, in order to facilitate transportation and installation, during the industrial layout, the manufacturing workshops for both were arranged to be manufactured in the arsenal.
, some standardized parts are provided by Bairen Industrial Zone.
All the steam engines used by the travelers so far have used Lancashire boilers to supply steam - this type of boiler has been improved and installed with a surface condenser. It can provide distilled water to the boiler, ensuring that the boiler can be used continuously.
Lancashire boilers can also provide steam for marine steam engines, but the efficiency is relatively poor. The same power requires more boilers to supply steam. This is uneconomical for ships with limited space, so it is responsible for the manufacture of steam engines.
Sun Li and others have a brand new task, to develop a new high-pressure boiler for marine steam engines to provide steam with a larger unit pressure. If the new model of boiler is successfully copied, it can provide the basis for manufacturing a steam engine with greater horsepower.
.After all, the power provided by a 500-horsepower steam engine is still too low.
After reading the information, everyone decided to follow the old path of technological improvement in history and trial-produce a fire tube style boiler. It uses a cylindrical shell and flue. The unit pressure provided by this boiler is far better than that of the Lancashire boiler, so that
The cast iron pipes originally used must be replaced with low carbon steel pipes to ensure safe operation.9.30.2011