Chapter 254 This Damn Heartbeat Gao Kai's voice carried a hint of disbelief, "Teacher Su...you mean...to perform 'secondary annealing' and 'normalizing' treatments on this high-carbon steel to reduce its brittleness and increase its toughness?"
This is another top-tier heat treatment technology that you only see in textbooks! The requirements for temperature and time control are extremely stringent; if you are not careful, the entire piece of material will be completely ruined.
“Not only that.” Su Tang’s gaze fell on the old C616A lathe. “This lathe is not precise enough, but its spindle is stable. We can make a rifling cutter ourselves and scrape out the guide surface of the inner cavity little by little by hand.”
This is insane!
They've completely gone mad!
Old Man Sun and Gao Kai exchanged a glance, both seeing extreme shock in each other's eyes.
Making your own cutting tools! Scraping the internal cavities by hand! This is beyond the scope of a repairman; it's something only a top-tier master fitter would dare to dream of!
"Time waits for no one." Su Tang didn't give them much time to be shocked. "Let's start dividing the work now. Master Sun, you're in charge of cutting and heat treatment of the materials. Gao Kai, go and disassemble all ten of the best Type 56 semi-automatic rifles in the camp, and bring me the trigger assembly and firing mechanism. We need to re-grind them and shorten the firing stroke to the limit. I'm in charge of making the cutting tools and machining the main body of the muzzle brake."
"yes!"
This time, the two had no further doubts and responded in unison, their eyes burning with an unprecedented flame.
In the weapons workshop, this war machine, which had been dormant for many years, began to run at full speed at this moment, accompanied by the ear-piercing sound of cutting!
Old Sun used all his skills to cut a rough section off the discarded cannon barrel with a grinding wheel cutter, sparks flying everywhere, making his wrinkled face turn red.
Gao Kai also abandoned his usual arrogance and ran out quickly like the most obedient student. In less than ten minutes, he came back panting with a large pile of rifle parts. Then he buried himself in the workbench and carefully polished every tiny part according to Su Tang's requirements with the finest oilstone.
Su Tang stood in front of the humming C616A lathe.
Instead of starting the process immediately, she stretched out her slender fingers and gently stroked the cold lathe.
Close your eyes, feel its vibrations, listen to its sounds, as if you are communicating with an old friend.
Gao Kai glanced up occasionally and was instantly captivated.
This was the first time he had ever seen someone operate a lathe like this.
Su Tang's movements were devoid of any human touch.
Her body rose and fell slightly with the rhythm of the lathe, her hands as steady as if welded to the control lever.
The advance, the cutting, the retraction—every movement is fluid and rhythmic, without the slightest redundancy.
The flying iron filings traced silver arcs around her, but not a single one managed to touch her.
Gao Kai was completely mesmerized.
He put aside the last distracting thoughts in his mind and, like the most devout apprentice, would run to Su Tang's side whenever he had a spare moment, his eyes sparkling with a fervent thirst for knowledge, constantly asking questions.
"Teacher Su, why did you slightly raise the angle when you inserted the knife just now?"
"In order to compensate for the natural sinking of the tool under the cutting force, the cut surface is a truly flat surface."
Su Tang answered each question concisely, and each answer gave Gao Kai a sudden, enlightening feeling. These were top-tier practical experiences that could never be learned from books!
He wished he could write down every single word Su Tang said in a small notebook.
Time ticked by, and the atmosphere in the workshop was tense and frenzied.
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