The steel rolling mill has two cold-drawn steel pipe machines and two cold-rolled steel pipe machines for drawing seamless steel pipes - of course, even if there are not these machines brought from another time and space, considering the high industrial level, a few self-made cold-rolled steel pipe machines
There are not many problems with the steel pipe drawing machine.
The steel rolling mill already has sufficient experience in manufacturing cold-drawn seamless steel pipes - so far, the barrels of all Lingao-produced guns are cold-drawn seamless pipes. With enough production experience, it can produce another specification.
The steel pipe is no longer a problem.
The new boilers still use riveting technology, and all materials are made of low carbon steel. The equipment on the ship is no better than that on land. Once something goes wrong, the consequences will be much more serious. There was no explosion in the early marine boilers that did not cause a major accident. Safety comes first.
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Sun Li and Zhou Bili had the previous experience of building Lancashire boilers, consulted a lot of information, compared the advantages and disadvantages of various boilers, and then assisted in computer design and selection, and finally designed and manufactured a "Zhurong Type 2"
The overall structural strength of the fire tube boiler is far superior to their early imitation of the Lancashire boiler.
The final boiler easily reached the expected output pressure during pilot fire operation: an output pressure of 3.5kg/cm2. Such a large output value was already twice that of the boiler used by the Great Eastern in the 1850s.
The Great Eastern still uses an old-fashioned box boiler, with an output pressure of less than 1.8 kg/cm2. In order to provide power for the 4800-horsepower marine engine, six such large box boilers had to be used.
The only thing that worried Sun Li was that there was something wrong with the pressure gauge on the boiler. He was worried that one day the pressure indication would be wrong and cause a tragedy.
With such a high-pressure boiler, it can not only save cabin space, but also lay the foundation for the future development of three-expansion or even four-expansion steam engines.
According to the rated output power of the steam engine of 500 horsepower, only one such boiler can meet the needs of the steam engine. However, there are still many places where steam is used on the ship. The excess steam can be used for cooking and providing distilled water for the crew... The final decision was made on
Two such boilers are installed in the hull of the 854 modification.
The 854 engineering team still made a prudent decision to only use the relatively simple 500-horsepower steam engine as power. Marine steam engines have special requirements for size and operation, so the various standard steam engines currently widely used by Lingao Industry cannot be directly shipped.
A special marine steam engine must be re-developed. Zhan Wuya's opinion is that this steam engine should be used as a standardized equipment, and if there are no special requirements, it will be universally installed on all ships requiring 500 horsepower.
In the end, Sun Li and others who were responsible for the development of the steam engine decided to use the reciprocating inverted upright steam engine that was widely used in the mid-to-late 19th century and had mature technology. It occupies the smallest area in the hull. If necessary, two machines can be installed in the ship for future use.
The twin propellers laid the foundation. The steam engine manufactured by Sun Li was of the compound-expansion type, which was more efficient than in the past. It could be improved to three-expansion or four-expansion in the future. The manufacturing director decided to start with the compound-expansion type and imitate it first, and then gradually improve it.
In addition to the 500-horsepower main engine, two existing 12-horsepower small steam engines will be installed to provide power for auxiliary operations, including raising and lowering sails, driving artillery operations, and retracting and retracting small boats.
After the power solution is solved, the biggest technical bottleneck of the 854 reconstruction ship project no longer exists. The last major technical problem is the paint used for the hull. Although the bottom of the ship is covered with copper skin, special bottom paint is no longer needed.
But the entire hull also needs paint as a protective material.
There is no modern paint in this time and space, and various botanical substitutes such as lacquer, soybean oil, and hemp oil are all insufficient in quantity. In the end, the coating of the ship was made of asphalt paint extracted from coal tar. Asphalt paint has many
It has a strong anti-corrosion effect and was the most widely used marine coating in the European shipbuilding industry before the large-scale use of paint. This unpleasant-smelling substance was painted on the hull, making the entire hull appear an ugly light black color. So much so that the first batch
Linko's modern ships are known as "black ships".
Of course, in order to actually build a ship and put it into operation, it is not just about building a hull and installing an engine. Every time the 854 modification project progresses, the Manufacturing Directorate and the Planning Institute will find that countless new things have emerged.
Problems need to be solved. Some require the Planning Institute to find new raw materials from various sources. Some require the industrial sector to manufacture new equipment. The more problematic problem is that they only have technical data and no professionals who really know the industry. Everything depends on the public.
Explore, understand and experiment on your own.
"...The construction of the 854 reconstruction project has effectively promoted the matching and systematization of the new industrial system, and enhanced the overall collaboration ability and awareness among industrial departments. The industrial department has built 2 new industrial departments for the project and 297 new equipment (
(sets), including 46 large-scale equipment (sets), 2,515 pieces (sets) of manufacturing process equipment and molds, training technicians, and 3,490 workers..." (Excerpted from "Contemporary Industrial History? Shipbuilding Industry Volume", first edition, internal
Released and may not be quoted without permission)
Such stumbling progress was full of adventure, waste, frustration, disappointment and surprise. So much so that Zhou Ke once made a gaffe while drunk and said: Judging from the various difficulties he experienced in undertaking the 854 reform project, he had to rush to launch the 854 project.
It was an unrealistic "Great Leap Forward".
Compared with the 854 modification project, the construction process of six sail-steam hybrid 500-ton ships is much simpler - basically the technical achievements and experience gained in the construction of the 854 modification project can be applied to these ships immediately
are being built. Many accessories, tooling and equipment manufactured for the 854 modification can also be directly used on these ships.
According to the provisions of the "First Shipbuilding and Maintenance Record", the construction of these ships was Project 901. After some design discussions, the final Project 901 plan was copied from the "90-day gunboat" of the North during the American Civil War, the first ship
The USS Unadilla started construction in late spring, was launched in mid-August, and entered service at the end of September, hence the name "90 Days." The construction cycle of this kind of warship is very short, and it is highly appreciated by those who are in urgent need of new ships.
The final construction indicators of Project 901 are 48 meters in waterline length, 8.5 meters in width, maximum draft of 2.9 meters, displacement of 690 tons, load capacity of 507 tons, two-mast barquentine sail rig. Install a 500-horsepower steam engine and single propeller. Install another 12
One horsepower auxiliary steam engine. The maximum speed is 10 knots. The crew is 114 people. The Navy Department defines it as a fourth-class gunboat.
This fourth-level gunboat is positioned to be more responsible for route escort and long-range patrol missions. It also performs cargo missions. Its coal bunker area can be adjusted, and the coal-carrying volume or cargo-carrying volume can be changed flexibly according to different missions.
The 500-horsepower tugboat is named Project 621. The tugboat is not only used to tow barges. Since a large number of large-tonnage ships have been put into construction, the berthing and docking of these ships in and out of the port in the future cannot be solved by small-horsepower steam boats.
.It is necessary to have a high-power tugboat to assist large ships to dock and leave the dock.
Project 621 uses twin paddle wheels for propulsion - paddle wheel propulsion has the advantage of shallow draft and is suitable for activities along the coast and in ports. If necessary, it can also enter larger inland rivers. Moreover, it is not afraid of the entanglement of fishing nets and aquatic plants that are common in offshore and inland rivers.
, the maneuverability of the twin paddle wheels is also relatively good, which is in line with the two roles assigned to it by time travelers.
While the shipbuilding project is in full swing, at the request of the Navy, the transformation of various steamboats originally equipped has also been put on the agenda. They will be switched to ironwood bearings and newly manufactured cast iron propellers in batches to improve efficiency.
The combat effectiveness of small boats. Once the transformation is completed, the Navy plans to transport some armed Daihatsu steamboats to Hong Kong and other places for various short-distance maritime chores. Together with the Type 2 two-masted patrol boats, they will serve as the main force of the Hong Kong and Pearl River Basin detachments.
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A large number of shipbuilding and ship repair tasks continued to pour into the shipyard, which forced Zhou Ke to require a 12-hour double-shift working system in the shipyard. Originally they used an 8-hour three-shift working system, but the workers
The lack of labor made it difficult for Zhou Ke to maintain such a labor system and asked for extended working hours.
"Otherwise, there is no point in working three shifts. With the current scale of shipbuilding, I don't even have enough workers to maintain two shifts." Zhou Ke complained when meeting Wu De, "Not only must I approve my two-shift plan, but also
We need to recruit workers—even workers with little training. At least they can be laborers."
Wu De said: "If you let workers work for 12 hours continuously, can you ensure that there will be no problems for the workers in the long run? If a few skilled workers die due to work-related injuries, they will suffer a big loss."
"It is said that workers generally worked 12-14 hours in the 19th century. I don't think our 12-hour working system will have a big impact for a few months. Food should be strengthened. I would like to apply for more food subsidies for workers - especially
There are free rations of protein and candy. Energy supplements are also distributed."
Wu De agreed to his request, and then ordered that the labor force who had recently completed "training" from the quarantine camp should be prioritized by the shipyard. Most of the weekly "study workers" activities in Fangcaodi were changed to the shipyard and
Other industrial sectors related to shipbuilding go to "learn labor". Although these students may not understand technology, they can at least write and do math - this simplest skill is also rare among the workers in Lingao. (To be completed.
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