Siheyuan: Genius couple, dominate the whole courtyard!

"What is the underline? Sister Cuihua?" Li Xiufen asked curiously when she saw Qin Huairu bring up a toolbox from the side.

Qin Huairu explained: "This scribing is actually like the carpenter in our countryside building a house, marking out the position that needs to be processed on the rough or workpiece, and then grinding, frustrating, chiseling, sawing, scraping , grinding, etc."

After speaking, Qin Huairu took out the preparation tools for marking from the toolbox.

"This is a needle. When we draw the line, we have to draw it once, and we can't redraw it multiple times."

"Why can't you draw more, who can guarantee that it can be melted in one go? This is a bit difficult." Li Xiufen heard Qin Huairu say this, and felt that it was not easy to be a fitter, and this position seemed very difficult.

Qin Huairu replied: "Because if you draw too much, the part of the line will become thicker and blurred, which will cause troubles for subsequent processing. Generally, the accuracy of the line is required to be between 0.25-0.5mm."

"I've been stuck on this line for the past few days. I can't always draw it correctly, and it's easy to draw it crookedly."

"But don't worry too much. It should be fine if you practice more."

"We have marking discs, vernier height gauges, planning plans, marking cards, V-shaped irons, right-angle irons and C-shaped clamps, centering rulers, angle gauges and angle rulers, measuring height rulers, jacks and other tools for marking line use."

"There is a lot of knowledge about fitters. It is a patient job, a delicate job, and requires experience."

"If it wasn't for my master, he would have left long ago if he had been someone else. Don't you know that he has been annoyed by my questions for the past ten days."

When Qin Hao heard Qin Huairu say these things accurately, he became more and more satisfied with this daughter-in-law.

Speaking of which, the knowledge of fitter was not possessed by the previous life. The previous life belonged to people who knew it at a glance, and he was a theoretical school in his previous life.

So what I told Qin Huairu was only the knowledge in the fitter's handbook before the steel factory assessment.

"No, it's mainly because the daughter-in-law is eager to learn!"

"As the saying goes, the master leads the door, and the cultivation depends on the individual. It's not easy for you sister Cuihua to be able to master these in ten days. You always ask me when you are dreaming."

Qin Huairu looked in surprise: "Is there? No way."

Qin Hao nodded: "Yes, it's just that you don't know it. Go ahead, I won't bother you."

Qin Huairu laughed and continued to tell Li Xiufen, for some reason, when she talked about this knowledge today, the words that Qin Hao had said in her ear before were ready to come out, and she felt like she had it at her fingertips.

How to say this feeling?

It's as if she really knows how to do it without thinking too much, and the description is very natural.

Many things that I didn't understand before became clear when I said them.

Qin Huairu went on to say: "The function of marking is mainly to find unqualified blanks in time, make reasonable processing allowances, reduce waste products, and reduce losses."

"If we cut the material according to the line on this sheet, we can use the material reasonably and avoid waste."

"Sometimes, when there is a defect in this workpiece, we can draw a line, borrow materials, and find a correct way to make up for it"

Qin Huairu spoke eloquently, speaking very clearly.

Li Xiufen listened intently. Although she was at a loss, she was greatly encouraged when she saw that Qin Huairu was able to use various tools quickly and proficiently.

After Qin Huairu prepared the tools, he took a rough forged workpiece for surface cleaning.

Surface cleaning needs to be painted, and the steel scraper or steel wool ball is used for coloring, and copper sulfate solution is used.

The surface part of the line is made of copper sulfate and varnish.

The forged workpiece is bridge steel, and Qin Hao showed her the blueprint before.

The processing position needs to be drilled, and the requirements for scribing are extremely high, and the accuracy cannot exceed 0.3mm.

Qin Huairu was still a little uneasy. After all, the marking accuracy of the previous few times exceeded 0.6mm, and it could not be done in one go. It needed to use the height caliper many times to complete it.

Although barely qualified, the efficiency is very low, and it takes half an hour, or even four, five, and 10 minutes to complete one.

This is not in line with Qin Huairu's expectations, she must be quick, precise, and accurate in one stroke.

Li Xiufen looked at Qin Huairu's coloring, wanted to ask but didn't dare to ask, Qin Hao saw it, in order to let Qin Huairu concentrate, he explained:

"This rough workpiece is not washed with water like washing vegetables. The purpose of this washing and coloring is mainly to make the lines clear and clear."

"Blue oil can be used to process the surface of the workpiece. If it is forging, lime water is used for casting. Don't underestimate the simplicity of your sister Cuihua's preparations. This is also a delicate job. You can't apply it too thickly. Evenly."

When Qin Hao explained to this point, he saw that Qin Huairu had installed a plug on the machine.

She is going to draw a circle on the bridge steel.

The work of drawing a circle and punching a hole is very difficult, and it is necessary to use a match block to find the center position of the working hole.

Can Qin Huairu do it?
Qin Hao has no idea.

"Xiu Fen, stand aside and watch, try not to disturb her. You need to be very focused when drawing the line."

Li Xiufen stepped back nonchalantly, not daring to vent her anger, and watched cautiously.

Qin Shou suddenly got curious and went to Qin Hao's side and said, "Hey, something's wrong! Sister-in-law's preparation for marking the line today, at the beginning, the selection of tools is very similar to that of Master Yi. It's strange."

Qin Hao nodded in agreement, but he didn't speak, his attention was all on Qin Huairu.

He also noticed that Qin Huairu was different.

Qin Huairu has achieved stability, accuracy and speed in the operation process of adjusting jacks, angle iron platens, and using V-shaped irons to place round workpieces and fix square boxes!

In Qin Hao's eyes, it seemed that he was doing these tasks.

I just don't know how accurate Qin Huairu's line drawing is, whether he can pass the level when using the sample punch, and whether he can pass the eye punch.

Qin Hao was more or less anxious for Qin Huairu.

At this moment, Qin Huairu used various tools and began to draw according to the drawing with a needle.

As her movements started, Qin Hao took a step forward.

Something happened that made Qin Hao confused.

Qin Huairu turned the needle in the blink of an eye at an extremely fast speed, and drew two perfect circles.

A big circle and a small circle are inlaid in it.

From the start to the end, it can be called a master level, and there is no extra movement at all.

"How did you do it, daughter-in-law?" Qin Hao let out a cry of surprise, and took a look at the blueprint next to it, and found that it was almost exactly the same.

Then he took another measurement with a precision caliper.

The accuracy is 0.2mm, which is directly lower than 0.25mm.

Oh my God!
Who else?
"Is he stronger than me?" Qin Hao was extremely shocked.

Qin Huairu stood by and looked at the line she just drew, she was more confused than Qin Hao.

"This is the line I drew?"

Qin Shou took Qin Hao's drawing closer and compared it, and looked at the two circles on the workpiece in shock.

"I'll be good, is this a line drawn by someone?"