Chapter 37 Feather Pattern Flower Steel

The vise was fixed to the table through bolts. Su You tried to move the threaded rod, and it went in and out very smoothly.

Seeing Shi Tong applying oil carefully, he couldn't help but praise: "Good craftsmanship!"

Shi Tong felt very satisfied when he saw his finished product: "With Yungang's coke graphite crucible, this thing can be cast directly. Yungang is indeed a good steel. It is extremely hard after quenching."

Su You lamented: "Just this piece of iron, the cost is very high."

Shi Tong smiled and said: "If a worker wants to do his job well, he must first sharpen his tools. The Shi family understands this."

Su You rubbed his little hands, feeling a little excited: "That's good! Today I'll teach you how to forge feather patterns! Are the cloud iron sheets and cloud steel sheets ready?"

Shi Tong was full of heart: "It's ready."

Yunnan iron is wrought iron produced by Yunnan Iron and Steel Co., Ltd., which has low carbon content, while Yunnan Iron and Steel Co., Ltd. is refined steel with high carbon content.

Su You then directed Shi Tong to clean the surface of the iron sheet with hydrochloric acid, then grind off the pickling layer, and overlap one layer of steel and one layer of iron.

The two ends were poured with molten iron to dry them up, and then began to be hammered, folded, and hammered again.

Before folding each time, sprinkle borax and brush to remove oxidized impurities to avoid dust inclusions.

Finally, after eight forgings, the iron pieces were fused into an iron bar.

Chisel the iron bars into equal squares, stack them together, pour molten iron on the edges and weld them together, then heat them red and forge them together again.

Then the iron block is re-heated red, and a steel chisel is used to split the iron block from it, then piece it together, and then forge it back together again, and finally form a piece of iron cube.

The hardness of the tempered iron square is not very high. Next, the iron square is cut into pieces of iron with a hacksaw.

The thing was not big, but it took quite a lot of effort. Shi Tong was exhausted and sweating profusely.

Arrange, forge, fold, forge again, slice, join, forge again, split, join again, forge again, he has no idea why this little master wants to do so many tricks to this small piece of steel.

.

But when Su You asked him to polish both sides of a piece of iron and wash it with acid water, the magical pattern was immediately revealed.

Shi Tong held the iron piece in his hands, his legs became weak, his body was completely out of his control, and he sat down on the ground.

He got up and said in a trembling voice: "Sir, your skills are amazing, even though Ou Ye is a capable general!"

My hands were shaking so much that I was afraid that I might not be able to hold them firmly, so I quickly placed the iron piece on the table and looked at it respectfully.

On the iron sheet, high carbon and low carbon patterns are interlaced, with an obvious feather vein in the middle.

Then the pattern takes the feather vein as the center, bends to both sides, diverges, and expands to form a beautiful feather-like pattern.

Such a beautiful metal pattern is completely immersed in the metal. This is a beautiful product that has never been seen before. It shocked Shi Tong beyond words.

Su You took Shi Tong's hand: "Get up quickly, this is the first step of the process. What does it look like to outsiders?"

Shi Tong's legs were still weak. With the help of his hands, he supported the table and climbed back to sit on the chair: "It's too... too scary. This... was this made by me?"

After saying "Pa", he slapped himself in the face and murmured: "It's not a dream, I'm not dreaming..."

Su You looked at Shi Tong's actions and laughed loudly: "The truth is actually very simple. You go back and knead the glutinous rice flour, make one ball dyed and one undyed, steam until half-cooked, then fold and mix according to the method I taught you.

You can also get feather-patterned glutinous rice pieces.”

"Master leads me in, and you can practice it individually. From now on, you can use this method to assemble the dough as much as you like, and then experiment with cloud iron and cloud steel. You can get blades arranged in various patterns."

In fact, Su You knew a lot about the layout methods, but in order to inspire Shi Tong, he didn't want to say it for the time being. He just gave an example casually: "Take the feather pattern just now. If we cut some staggered cuts on the top and bottom of the blank,

Triangle, let the blank form a fold line, and then straighten the blank again, what will it look like when cut?"

Shi Tong thought about the changes in the texture of the iron material, then he touched the feather veins with his hand and drew an S-shape.

Su You said: "Clever! This way you can get the feather pattern of wavy feather veins!"

Shi Tong immediately shouted: "Shi Laosan, Shi Laosan, go quickly and steam two half-cooked dumplings as the master said!"

After saying that, he held up his hands to Su You and said: "Once you think about it, it should indeed be the case, but no one has tried such a complicated forging method before."

Su You ordered in an old-fashioned way: "That's not it. Hurry up and choose a piece with the prettiest pattern. Cut out the blade pattern and paste it on it, then file it into shape."

Shi Tong then wanted to do it himself, but Su You pulled him back and said, "Don't worry, you have other things to do. First, put these two boxwood sheaths into wax molds."

This man is very skilled in stone making, and he looks like an expert at stealing bronze ware.

After that, the mixture of carbon powder, calamine powder and copper powder is prepared, put into the graphite crucible, sealed with clay, heated with coke blast, and the copper juice is refined.

The powder melted very quickly. After a while, the pottery seal was removed and impurities were removed, and a pot of copper juice was obtained.

Shi Tong scooped up a small spoonful of copper juice and poured it into the sand mold. After a burst of flames accompanied by the scent of wax, he opened the small sand box, and two shining golden copper pieces appeared in front of their eyes.

Shi Tong was shocked again: "Is this... is this the turning of copper into gold?"

Su You couldn't help but find it funny and joked: "That's so beautiful for you! This is brass!"

"There is something called Japanese lead. It is actually not lead, but another metal, zinc, which is the main component of calamine."

"When zinc and copper are fused, golden brass can be obtained."

Shi Tong looked at the brass and clicked his tongue: "Pure copper is purple, this copper really looks like gold..."

Su You smiled and said: "Just to watch the excitement, I am not familiar with the rest of the things. Do you see the grooves on the top? Fill it with silver to make it convex, and then carve out the petals of the flower vine, which should be three-dimensional. These

I can only rely on you for things."

Shi Tong took out a small file and polished the burrs of the brass casting: "That craft is called Zhu Yin! Look, master, I promise to make it perfect for my aunt. By the way, master, how can you make this folding knife better than my grandfather?"

There are a lot of extra parts?”

Su You pointed at the drawing with an iron needle and said: "Actually, there are not many. This is a reed. To ensure elasticity, soft steel must be used; this is a spring, which is actually a switch; this is a lever-type back lock, which is actually a switch.

A small steel bar. There is a braking groove on the head of the blade. When opened, it will be stuck on the protrusion in front of the small steel bar. After the knife is locked, it can be used. Finally, press down on the part behind the handle of the knife.

, the front end of the back lock is tilted up, and the knife is unlocked before it can be folded again."

Shi Tong felt a little dizzy: "I can't understand..."

Su You patted Shi Tong and said, "First make the parts according to size. After I put them together, you will understand."

Soon Shi Tong's apprentice cast all the parts, drilled the holes, and Su You began to assemble the folding knife.

The rivets used are not the ones that actually fasten the tool, but a smaller wooden rod for easy disassembly and adjustment.

This thing is actually very simple, and it all depends on the ingenuity in the design of the knife head.

When closing the knife, first press down the steel bar that serves as the back lock from the end of the handle. The small protrusion on the back lock is released from the slot of the blade, and the blade is unlocked.

When the blade is retracted, it bends the reed under the blade head, creating stress, which is used to store energy.

After the knife is retracted in place, the spring clip on the cutter head will be pushed into the braking pit on the cutter head by a small reed, locking the cutter to ensure safety.

Putting the knife away, Su You pressed the spring on the blade head, and the blade unlocked again, and was ejected by the spring. The round head of the blade pushed up the back lock while sliding, and then with a "click" sound, the blade opened and was locked again by the back lock.

Locked.

Shi Tong felt like he had found a treasure: "This... what kind of trick is this? Master, show me quickly!"

Su You put away the knife and threw it to him. Shi Tong took it and pressed the spring button. The knife popped out again. Shi Tong broke off the blade and found that it was very stable.

When you press down on the blade, it won't move. You need to press down the back lock before the blade can be retracted flexibly. Finally, you only hear a gentle "click" sound, and the knife is locked in the handle again.

Because the knife has not yet been formally mounted, the mechanical movement of the entire knife head within the tool handle and the interaction with other components can be clearly seen.

Shi Tong played the game over and over several times happily, and couldn't help but admire: "Master, your mechanism design is so wonderful!"

Su You was secretly amused. Just this thing was so wonderful.

Which middle school boy has never dreamed of a sword? Su You has always liked this kind of fine handmade gadgets, and micro-technology folding knives have always been his dream.
Chapter completed!