It's not an easy task for many technicians nowadays.

Pure tungsten is originally a difficult-to-process material, wear-resistant, high hardness, used in the production of various tools, to use tungsten alloy to process this difficult-to-cut material, is not an easy thing, even Liu Yijiu made the formula, YS8 tool, is only used for rough machining, the effect of finishing is not very ideal.

Only by getting the large tungsten crucible out, the more advanced nanoscale powder metallurgy tools can be studied.

For a long time, the ultra-fine powder metallurgy process was only possible for the United States and the little devils. The Republic's technical poor in this regard, even if it gets the process formula, it is impossible to reverse research and deduce the process.

Therefore, after understanding the situation, the faces of Yu Jianguo and the other two eighth-level lathe workers were very grim.

"There is no problem with the clamping method, and I can find a way to solve it, cutting tools, this one is the biggest problem. We can only grope for this kind of large tungsten crucible. It is impossible to come up with a reasonable process from the start! Yu Jianguo shook his head, there were a lot of silver-white scrap products in the warehouse, and it looked very smooth on the outside, if only it could be sintered and formed directly without processing.

However, the amount of deformation of several millimeters, as well as the very heavy dock crucible, which is not processed, also has a very important impact on the products produced later.

The deformation of the dock crucible must be eliminated, and the weight must be reduced, and at the same time, the thickness must be equalized. There will also be some subtle effects on the local temperature in the entire high-temperature furnace.

Without processing, it is impossible.

Unless the amount of deformation can be controlled from the sintering process. Let the total deformation not exceed one millimeter. The thinner the blank, the greater the sintering deformation.

"The cutter is in the current situation. YS8 is the best solution. Otherwise, it is sintered with nano-scale powder. Cubic boron nitride, tungsten carbide, these tools are not suitable for pure tungsten machining! "Liu Yijiu doesn't plan to let them waste too much time on experimental tool materials." Even if it is a cubic boron nitride ceramic tool, this has to be at the nano level, tungsten carbide, only a few lines of thickness of the coating, at present we have not solved the production process problem, imported from abroad. Ladies and gentlemen, do you think it's appropriate? This is military production! ”

One of the most important principles of military production is to produce by itself.

Even if the quality is poor, it's not a problem.

I am afraid that in case of a war, international supply will be interrupted, and the entire production will be a problem, and a protracted war will fight the production potential.

You can't make your own knives. Nothing can be made, what are you going to do? During the War of Resistance Against Japanese Aggression, the Republic could not produce equipment, so it could only rely on human life. Take a big blade to fight with the little devil carrying the gun, and exchange human life for the little devil's equipment.

On the Korean battlefield, the same was true. More than a third of the weapons and ammunition in the republic need to be captured on the battlefield!

Liu Yijiu's words made everyone gloomy.

They know. Even if the production quality is poor, the production efficiency is lower. Nor can it be without its own tool production capacity.

"If you want to do a good job, you must first sharpen your tools. There is nothing wrong with this, but in the military industry, we cannot use this as an excuse. Zheng Hao also reminded everyone.

For these people who have always been bullish and coaxing, for him who does not understand technology, it is not easy to educate him.

And Liu Yijiu is different, Liu Yijiu himself understands technology, or he understands technology very well, he is very curious, didn't this kid go to college? How can you even learn operational theories in college?

Even if he used to grow up in the base, it was not easy to be proficient in all techniques of milling and grinding pliers, and how old was he when he left?

"The leadership is a lesson. Difficulty, for us, is not a big deal. Since there is only a YS8 tool, let's work this and explore the most reasonable cutting elements. Yu Jianguo knew that if he talked nonsense on this, Liu Yijiu would definitely get angry.

In the past, there were no good tools for the production of missiles or anything, but after the cutting process, the fitters repaired the file by hand, and the first long-range missile was also produced in this way.

"Director Liu, the first thing about processing technology is that the outer circle and the bottom must be processed. At this point, I think we can consider designing a specialized tooling. Enter the whole inner hole, when there is no clamping, the tooling is installed in it, and the contact area between the tooling and the inner hole is expanded, so that the weight is mainly on the tooling, not on the top of the tailstock. When Lu Feng, the eighth-level worker, was communicating with others, he began to keep drawing a simple force diagram on the small notebook he carried with him for analysis.

Others didn't come up with a plan, not because they didn't have the ability, but because they were also waiting for the right time.

The skilled workers in the base of the Ninth Courtyard are different from those outside.

They have enough time to study various theories and learn all kinds of related knowledge in each section. Lathes, when they reach level 5 or above, they have to start to involve relevant materials, machinery, hydraulics and even electronics, which is impossible in the production workshop. To level up, just do targeted learning.

During the years in the mountains, everyone was so idle that if they didn't find something to do for themselves, they would go crazy.

As long as you study your profession seriously, all of them are top-notch masters, far higher than ordinary masters of the same level outside. Not only do they have rich operational experience, but they also have theoretical knowledge that can be matched by the senior skilled workers of other units that are constantly engaged in production.

"Tell me about it. There's a blackboard over there......" Liu Yijiu pointed to the production kanban next to him and asked Wang Lufeng to explain his thoughts.

Wang Lufeng nodded, this habit was brought to the base by Liu Yijiu.

Every time there is a technical discussion, if the people involved argue, they feel that their plan is the most suitable. So, bring them together. Let the managers listen and watch them draw on the blackboard and fight.

If you want to prove your plan, you can. If someone else has a problem, you have to find out the flaws in other people's plans in front of everyone.

At first, they didn't find any problems, but after continuous revisions, they found that various solutions had become very perfect after discussion by everyone, so that they were happy with this kind of thing.

Unfortunately, there are too few technical breakthroughs in the entire base that require the participation of workshop technicians.

Not to mention. There are more than twenty top masters in the second district, and the wolves with more meat and less meat are not very suitable at all.

Wang Lufeng nodded, did not speak, walked to the blackboard on the side of the conference room, picked up the chalk on it, and began to draw sketches on the blackboard.

Soon, a simple tooling design appeared.

"According to the difficulties we are encountering so far, the same type of parts as last time in the base. The solution process proposed by Master Xiao Liu, we can do this. On the inner wall, extend the support points. This solid bar in the middle, or a thick-walled tube. This is the ...... that bears the weight of the entire part The surrounding ring support rod is designed to be adjustable, and the degree to which it can be adjusted is designed according to the range estimation of the deformation. So. There is no need to just stress the mouth wall, and it can be designed according to different thicknesses......"

"Lao Huang. You're not reliable for this, if so. Dozens of support points are used inside to distribute the weight, which is no problem. "The lathe designer designs the tooling by himself, and the fitter can be comfortable? Tooling and mold, this is their business, Wang Lufeng, this guy is simply robbing his own job! As the only ninth-level turner who was mobilized, Wu Delin naturally quit.

He immediately stepped forward and drew a sketch of the crucible on Wang Lufeng's tooling drawing, and marked the force.

"According to this design, the entire weight of the part is concentrated at these points, because the deformation during sintering makes the deformation not ...... uniformly."

"yes, so it's an adjustable pole. The cutting force generated during cylindrical machining, coupled with the torque generated when the part rotates, and the continuous shift of the center of gravity will make the whole part slip on the tooling...... "Wu Delin simply drew a more detailed picture of the force situation.

The center of gravity is unstable, and if it rotates, it will produce a huge torque because of this, and the whole workpiece is more than 700 and close to 8 kilograms!

"According to the circumference of the outer circle, the π multiplied by the diameter, 718 mm multiplied by the circumference of 3.14, the circumference is more than two meters, the YS8 tool can withstand the linear speed of no more than 120 meters per minute, and the limit speed of the entire speed will not exceed 45 meters per minute. Moreover, in the current situation, to ensure the durability of the tool, the entire speed can only not exceed 25 revolutions per minute, and the torque is reduced accordingly...... "Wang Lufeng is not very worried about Wu Delin's picky behavior.

This has always been here to understand the situation, and finally it has been continuously deduced in my heart.

There is also a general data for the various data.

"That's a good one, but the tip on it touches the inner hole of the workpiece, and it's only a point. The impact will not be good, we can weld a piece of soft material on this to increase the contact surface......" Xiao Jun, another eighth-level lathe, felt that Wang Lufeng's plan was very good, and the only thing was that there were some mistakes in this point contact.

"You can't use the surface to contact, the inside is unevenly deformed, and the safety factor of point contact will be much higher. This is also not afraid of the top damage to the inner hole, and it will still be processed later. The hardness of the material we use should not be too high, otherwise it will ...... local cracking" (to be continued......

PS: Many brothers who join the group don't have screenshots, and the management doesn't know whether it's better to put it in or not. Everyone should abide by the rules, of course, if you feel inconvenient, you can join the ordinary group 9512455 first. In this group, Aite backlight or water blue girl paper, and then apply to add VIP group 494550065.

In addition, let's talk about the update situation, last night, in the VIP group, Yang ysl, the super Huang Shiren and Tianhai Xiangyun, two local tyrants, persecuted with a group of brothers, and the gourd had to humiliately promise to keep three days and eight watches, that is to say, from today to the day after tomorrow, three days to update twenty-four chapters of 72,000 words, although it was not said that it must be 3,000 words and a change, the character of the gourd is not good, and I dare not reduce it to 2,000 words and a change, I would rather pay the account slowly than the account!

They want to throw money, and the gourd can only fight hard!