Great Power Ship

Chapter 260 Mature Technology

The 8200-ton full container ship of Zhujiang Plant is a typical fourth-generation full container ship.

This is not because Wang Jiahai forced the Zhujiang factory to put gold on his face, but the fourth-generation full container ship has obvious technical characteristics. The most obvious one is that the steel plates used on this type of ship are low-carbon steel with higher yield. alloy steel.

Thus, the original 16mm thick shipboard steel plate can be reduced to 12mm.

After the 8mm thick cabin steel plate is reduced to 6mm.

Don't underestimate the reduction in the thickness of these steel plates. For a large and medium-sized ship, the combined weight is already considerable.

The benefits of reducing the weight of the ship are self-evident.

Not only can more cargo be loaded, the fuel consumption of the ship will be greatly reduced during operation, and the continuous voyage will also increase accordingly.

It's just that if you want to meet this requirement, traditional low-carbon alloy steel can't achieve it.

In this regard, Japan uses a new type of marine low-carbon alloy steel developed by itself, with a yield strength of 200-300 MPa, and its performance has reached or partially exceeded the strength of steel used in early submarines after World War II.

South Korea does not have Japan's developed industrial chain synergy, but relies on its integration with the world's industrial chain to sign a long-term contract with the Krupp Steel Works of the Federal Republic of Germany to purchase enough new high-strength low-carbon alloy steel for ships.

Although the price is much higher than that of Japanese products, the labor cost of South Korea's shipbuilding industry is several times lower than that of Japanese competitors, which can not only dilute the cost of steel, but also hedge a lot with engines and other imported components.

The Zhujiang factory did not take the path of South Korea. Although its own labor cost is lower than that of South Korean friends, the problem is that the amount of foreign exchange imported is too large. With the current strength of the Zhujiang factory, it is impossible to produce so much foreign exchange.

So it is taking a path similar to Japan's entire industrial chain, that is, to explore and develop related new marine steels by itself.

However, compared with Japan's many years of accumulation, the experience of Zhujiang Factory is obviously insufficient. Fortunately, Zhujiang Factory has a lot of resources, not only has its own special steel factory, but also its own rare earth smelter.

Therefore, Zhujiang Factory spent a lot of money on relevant foreign materials for experiments, and finally developed a micro-niobium alloy steel that added niobium. After comprehensive testing, its yield strength was 280 MPa.

This level has reached the level of steel used in submarines in the early 50s!

Due to the improvement and application of steel, the overall weight of the 8200-ton full container ship of the Zhujiang Plant has been greatly reduced, with a net weight of less than 3200 tons, and almost all of the remaining 5000 tons can be accommodated in capacity.

Among the third-generation full container ships, at least a 1.2-ton ship can reach this level, and those with slightly inferior technology will have the same capacity as the 1.5-ton full-container ship of the Zhujiang Plant at the 8200-ton level .

The problem is that the power equipment, daily fuel consumption, and staffing used by a ship of tens of thousands of tons are not a fraction compared to those of an 8200-ton ship, let alone several times, sometimes it may be more than ten times.

Therefore, the choice of the shipowner is self-evident, and it must be inclined to the 8200-ton full container ship.

And because the gross tonnage of 8200-ton full-container ships is less than [-] tons, they can call at almost any port in the world to complete the last mile of shipping, and perfectly avoid competition with Japan and South Korea.

Because in the eyes of Japan and South Korea, there are only large-tonnage container ships, the slipway has long been occupied by steel giants, and there is no capacity to crowd out such small and refined medium-sized ships.

So it doesn't matter even if domestic financial services are lagging behind, because the entire international shipbuilding industry has no rivals to compete with Zhujiang Factory.

Those with a little strength will fight for large ships with higher profits, and those with weak strength will not be able to deal with the new high-strength low-alloy ship steel. Naturally, they will not be able to produce such high-level medium-sized full-container ships.

Only Zhujiang Factory, because its own strength is not enough to undertake large-scale container ships, but has mastered some key technologies of the fourth-generation container ships, can enter this track and comfortably swallow this wave of blank dividends. in stomach.

Of course, if Zhujiang Factory takes this opportunity to grow rapidly, it is not impossible for large container ships to get involved. After all, the 8200-ton full container ship is only the basic model of this type of ship in Zhujiang Factory.

With the reduction of two cabins, this ship becomes a small container ship with a full load displacement of 5500 tons, which can be used for inland waterway shipping and offshore port transportation.

Adding three cabins can expand a large container ship with a full load displacement of 24000 tons. If the width of the hull is widened, the displacement can be further increased to 40000 tons.

At that time, the carrying capacity will reach 4600 standard containers, making it a real giant.

However, in order to achieve such a serialization goal, the current 8200-ton full container ship must do a good job with this basic model, but...

"The problem we have at the moment is the diesel engine..."

Wen Dawei was also blunt about this, and used the prompt stick to focus heavily on the position of the engine room: "We expected to use a low-speed diesel engine. After calculation, this low-speed diesel engine needs to reach a power of about 3680 kilowatts, which is about 5000 horsepower. It is enough to meet the needs of our 8200-ton full container ship to sail continuously for 14.5 nautical miles at an economic speed of 10000 knots."

Speaking of this, Wen Dawei put away the reminder stick in his hand, looked at Wang Jiahai and sighed: "We have asked foreign suppliers before, and if they want to meet our standards, the price is expensive, and the conditions are also extremely harsh. The Zhujiang factory can’t afford it no matter what, so... this time, associate researcher Wang is invited to help us feel the pulse and see what we should do and how to go in terms of power!"

Although Wang Jiahai knew that this time Fan Jiahang came forward to ask him to come here for technical exchanges, the motivation was not pure, but he was somewhat unwilling to be dragged onto the boat by Wen Dawei, who was coaxed, coaxed, and coerced.

But when he saw that the 8200-ton full-container ship of the Zhujiang Plant had already achieved this step, only the powertrain could be pushed to the international market and become a business card of the domestic shipbuilding industry, his expression became solemn.

Because he knows very well that the Zhujiang factory is not a project for face, let alone a project for political achievement, but a down-to-earth plan to build a 8200-ton full container ship well and finely.

For this reason, the previous work has been done very thoroughly, not to mention anything else, the micro-niobium low-alloy high-strength ship steel is not something that companies that only care about face and political achievements can sink their hearts into.

And this kind of enterprise that focuses on scientific research and production is the quality that Wang Jiahai values ​​most.

So after hearing Wen Dawei's words, Wang Jiahai couldn't help but frowned, and asked Wen Dawei, "Have you accumulated any experience in marine diesel engines?"

"We have come into contact with the low-power marine diesel engine of Japan's Mitsubishi Heavy Industries before, but what really made us study carefully is the domestic K16E150ZC marine diesel engine!" Wen Dawei did not hide anything!

"K16E150ZC marine diesel engine..." Wang Jiahai nodded: "It's a bit basic!"

Then he raised his eyes and continued to ask, "Then do you have any specific ideas?"

Wen Dawei was very straightforward: "Of course we can use mature technology..."

(End of this chapter)