Chapter 546: Process Integration Brings Good News

"We hit the target!" Chen Mo shouted excitedly, "And the test results after -60 °C pre‑treatment fully meet the Stealth Bomber's usage requirements!"

Lin Qinhua let out a long sigh of relief, picked up a pen and wrote in the notebook, "Sample passes, can be purchased in bulk," with a smile tugging at the corner of her mouth.

Meanwhile, in the study of the Lin Family Courtyard, Lin Zhengcheng was having a heated discussion with Engineer Li from the Heavy Machinery Research Institute.

Engineer Li was very excited:

"Little Lin, your idea is brilliant! Reducing the cutting speed by 15% and using oil‑gas cooling, we just ran a simulation and the tool wear rate dropped by 22%, fully meeting the 0.001 mm tolerance requirement!"

"Also, the equipment maintenance data from Hans that Dr. Hanna provided includes a spindle dynamic balance calibration method, which can exactly solve the vibration issue when the machine runs at high speed," Lin Zhengcheng added, clutching the data Aunt Hanna sent early, "With this, both machining precision and stability are guaranteed."

"No problem!" Engineer Li slapped his thigh, "We'll adjust the equipment parameters tomorrow and do a trial machining of the first batch of blades. When will you send over the high‑temperature alloy sample?"

"I'll arrange for someone to deliver it this afternoon," Lin Zhengcheng said with a smile, "Engineer Li, this time we owe it to you; otherwise we'd have been stuck on the tool for several days."

"No need to be polite!" Engineer Li waved his hand, "It's all for the Stealth Bomber project; with our joint effort we can definitely chew through this tough nut!"

After hanging up, Lin Zhengcheng paced excitedly around the study twice, grabbed the documents on the desk and rushed out, just colliding with Lin Shengli as he walked in.

"Dad! Good news!" Lin Zhengcheng said excitedly, "The process plan is finalized; Engineer Li said he'll trial‑machining tomorrow, and Aunt Hanna's data was a huge help!"

Lin Shengli took the documents, flipped through them, and a satisfied smile appeared on his face: "Not bad, knowing how to leverage help and adapt; far stronger than when I was younger."

He patted his son's shoulder, his tone full of pride: "For the upcoming trial machining, keep a close eye on it, and contact me anytime if issues arise. I trust you can handle it well."

Lin Zhengcheng nodded heavily, his eyes brimming with determination: "Don't worry, Dad, I'll definitely get the engine's core components sorted!"

In the evening, Lin Qinhua and Chen Mo also carried thick test reports back home.

As the two stepped into the courtyard, they saw Qin Jingru carrying a plate of freshly steamed buns from the kitchen, the aroma filling the courtyard.

"You're back! Wash your hands and eat the buns!" Qin Jingru laughed, waving, "Pork and scallion filling; you two will definitely love them."

Chen Mo scratched his head, a bit embarrassed: "Aunt, I'm troubling you again."

"Trouble what!" Qin Jingru waved her hand, "You all work so hard on research, you deserve a good bite. By the way, how did the test go?"

"Very smoothly!" Lin Qinhua raised the report in her hand, her face beaming, "The composite material sample passed, the coating formula is optimized, and we can sign a contract with the material factory tomorrow!"

The courtyard instantly became lively.

Zheng Juan brought out freshly cut watermelon, Hanna also came over asking all sorts of questions, and Lin Shengli, watching the scene, couldn't hide the smile at the corner of his mouth.

The sunset's afterglow fell on the red lanterns, dyeing the whole courtyard a warm yellow.

Lin Shengli watched his bustling family and his energetic children, and a feeling of unprecedented steadiness rose in his heart.

He knew that the development path of the next‑generation Stealth Bomber was destined to be anything but smooth.

But with these people and this sense of family‑and‑nation devotion, even the toughest road can be taken step by step.

And he only needs to guard silently from behind, waiting for the day his children raise the banner, waiting for the day the bomber soars across the sky.

When that time comes, he can truly lay down his burden, take his family to see the motherland's splendid landscapes, and fully enjoy that long‑awaited peace.

The next day.

At dawn, Lin Zhengcheng tucked the pre‑prepared parameter comparison sheet into his bag and boarded the vehicle heading to the Heavy Machinery Research Institute.

The wind outside the window was cool, but he didn't notice; his mind was filled with last night's trial‑machining workflow— the machining precision of high‑temperature alloy blades is the key for the variable‑cycle engine to fit the Stealth Bomber, leaving no room for error.

Just upon entering the institute's workshop, the sharp metallic cutting sounds rose and fell.

Engineer Li was staring at a five‑axis CNC machining center, sweat beading on his forehead; when he saw Lin Zhengcheng enter, he quickly waved.

"Little Lin, come quick and see! The first batch of blades just finished machining; the precision meets the standard, but the surface finish is a bit poor."

Lin Zhengcheng hurried over and picked up the freshly removed blade.

The silvery‑gray blade glowed with a cold sheen, its edge bearing cutting marks more pronounced than expected.

He pulled out a caliper, measuring the blade's curved surface point by point, then gently ran his hand over it: "Tolerance is 0.0008 mm, within spec, but the finish is only Ra 0.8, not reaching the design Ra 0.4."

"The problem lies in the cutting tool's edge angle," Engineer Li handed over a worn tool, "We set it according to the previous parameters, but the high‑temperature alloy's hardness is higher than expected, causing the edge to wear too quickly and reducing the finish."

Lin Zhengcheng took the tool, walked to the window and examined the edge in the light, then flipped open the process manual:

"Adjust the edge angle from 15° to 12°, then reduce the cutting speed by another 5%, and use a finer grinding wheel to polish the edge."

He paused, then added, "I brought the tool‑coating sample we optimized earlier with Lin Qinhua and Chen Mo; try tools made from this material, the hardness can increase another 10%."

Engineer Li's eyes lit up, and he immediately had someone fetch new grinding wheels and tool blanks: "Alright! We'll adjust now, aim to produce new tools by morning and trial‑machining another batch in the afternoon."

The workshop machines restarted, and sparks flew as the grinding wheel polished the tools.

Lin Zhengcheng didn't idle; he worked with the technicians to tweak parameters, occasionally bending over to observe the equipment's operation, sweat quickly forming on his forehead.

By noon, the new tools were finally finished; he personally installed them onto the machining center and pressed the start button.

This time, the cutting sound became smoother. Two hours later, the new blades were finished.

Lin Zhengcheng carefully removed them, ran his hand over the surface, which was so smooth it was almost flawless.