Chapter 179: Rusty gate
In the northern coastal region of Germany in summer, there are rain and rain. Although it is not a heavy rain, the humid climate makes people feel uncomfortable.
The three important cities of Aurich, Emden, and Lyle, the capitals of East Friesland, replaced the cast-iron gates, and now they are rusted ...
Because of Marin's method of blasting with artillery when attacking Denmark, the pure oak city gates in Europe have fallen behind. Therefore, the Danes took the lead in introducing the cast-iron gates in Copenhagen, which once made Marin's army helpless.
After returning to East Friesland, Marin didn't want others to deal with himself in the same way. Therefore, the three most important cities in East Friesland are naturally the first to be fitted with cast iron gates. Even the cast-iron gates of Emden were demolished and converted from Copenhagen.
Marin actually understands the shortcomings of the iron gate, that is, it is easy to rust. Therefore, he had already arranged for his men to paint the big iron door to isolate the moisture.
However, the paint of this era is very primitive and of poor quality. After a long time, after the wind and the sun, it is easy to fall off the paint. After the paint was removed, the iron part was exposed. Then, something like wind and rain will naturally rust ...
Although this has been expected for a long time, Marin still has a headache. A good iron gate, if it breaks, the loss is great. After all, blast furnace ironmaking is not yet popular in Europe, but some blacksmith shops still use the original method of ironmaking by depositing iron ore and charcoal in charcoal stoves. Therefore, the iron price is very high.
In desperation, Marin had to order repainting. However, paint in Europe is so expensive now, and it takes a lot of paint to paint several times.
Now there is no synthetic paint, all the paint is extracted from sumac and minerals, the quantity is small, and the price is expensive. If you paint every three times, the cost is a bit high ...
So, Marin thought of galvanizing ...
Unfortunately, Europeans have not yet extracted zinc. Marin knew that there was a Tala lead-zinc mine in the northwest area of Dublin, Ireland, with huge reserves. It is a pity that the huge lead-zinc mine happened to be in the territory directly under the rule of Henry VII. Will Henry VII's treacherous character allow himself to mine zinc?
You know, because of the profits and taxes of the jealous wool industry, Henry VII desperately suppressed the export of wool and set up a wool factory by himself.
Therefore, if he knew that there was a huge lead-zinc mine in his index territory, even if he gave it to himself before, he would take it back with his rogue personality. Not to mention, just a large lead mine is enough to make Henry VII shamelessly turn over his heels.
And if you tinned the city gate, it would be a good choice. After all, tinplate is also rust-proof. However, tinplate has a fatal flaw. Once the tin plating layer is worn, it will soon be centered on the worn point and diffused and rusted.
It's inevitable that the city gates are bumping. Therefore, there will be problems with tin plating. The best solution is still galvanized.
In fact, if it is anti-bombardment, there is no need to use the gate of pure cast iron. It is enough to cover the gate with a thick iron sheet or plate.
After all, it is very difficult to smash the gates covered with thick iron plates or iron plates. The reason why Marin replaced the three cities with pure iron cast iron gates was brought into the ditch by the Danes.
Later, in the test, Marin now used a thicker back iron or iron plate to cover the oak city gate, which was also resistant to shelling. And, in doing so, there is another advantage that the cast iron city gate does not have is that it is easy to replace.
Now the pure cast iron gates used in cities such as Marin and Denmark, Hamburg, Lübeck, etc., if one piece of rust is damaged, it will be miserable, and the entire gate will be useless and need to be replaced as a whole.
If you use the method of nailing a thick iron plate or iron plate, even if a thick iron plate or iron plate is broken, it is just to take down the corroded iron plate and replace it with a new one.
However, no matter whether it is thick iron sheet or iron plate, it has the same shortcomings as cast iron gates and is easy to rust ...
Before, it was not that no European cities had covered the city gates, but in the end, they chose to give up because of the problem of rust.
At the same time, China and other parts of East Asia used a thick copper skin to strengthen the city gate. However, that is East Asia. In East Asia, one or two silver coins can be exchanged for one thousand Wen copper coins or more. In Europe, a silver coin can only be exchanged for 15 copper coins of the same size. Therefore, in terms of cost, the general country simply does not have that economic strength and cast a copper skin on the city gate.
Even a local tyrant like Marin, it is okay to cover the four city gates of Duolixi with copper skins, and to the city gates of other cities? just forget it……
15 The fast iron skin is equivalent to a piece of silver skin of equal size. Who can be so extravagant that several gates in various cities are covered with copper?
Therefore, to think about it, it is the most economical and effective way to cover the oak city gate with galvanized iron sheet. The only question now is where does zinc come from?
So, Marin had to look at the Tala lead-zinc mine in Ireland ...
Although the Tara mine is in the site of the old fox of Henry VII. However, the island of Ireland is not the only one of Henry VII at this time ...
You know ~ www.wuxiaspot.com ~ Marin helped Earl Edward of the York family to go to the Irish island, and also took control of Cork, the first good port on the Irish island. Not only that, there are 5ooo mercenaries around Count Edward ...
After thinking over and over again, Marin decided to start to support Earl Edward and let him wind and rain on the island of Ireland. Even, support the Earl Edward's reunification of the island of Ireland.
After Earl Edward took the only piece of land in Dublin and surrounding areas on the island of Ireland, England, Marin could buy the Tara Mine from Earl Edward in the name of the North Sea Chamber of Commerce, . Then, take the lead-zinc mine that was dug out and pull it elsewhere to extract zinc ...
Earl Edward ’s financial strength was far behind the control of Henry VII, who controlled England. Therefore, after Count Edward occupied the Kingdom of Kings near Dublin, he needed funds to prepare for the fight against Henry VII. Therefore, Edward at that time was definitely short of money. When the time comes, I will come forward in the name of the Beihai Chamber of Commerce, and worry about not being able to buy the first lead-zinc mine in Europe ...
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