There are many directions for industrial lithium batteries, such as polymer lithium batteries, energy storage lithium batteries, lithium-ion batteries, lithium iron phosphate batteries, etc.

For example, the Spanish company Graphenano claims to have developed a graphene polymer battery with a specific energy of 497Wh/kg, which is twice that of Xinghai Group’s ternary lithium battery;

There are other types of batteries with very high energy density, but they are difficult to achieve mass production.

However, the above are all ordinary batteries, and for Muyang, they are not considered black technology.

But it is also the direction that Muyang will develop in the next two to three years. High-energy-density batteries can be applied to flying equipment, such as flying cars or drones.

There are already institutions researching nuclear energy batteries, but they are still in the experimental stage. Mu Yang does not know whether experimental products will be produced.

Now Mu Yang doesn't want to come into contact with nuclear batteries. It is estimated that it will be difficult to achieve results after research. We will wait until the system reaches level 7 to see.

The company's ternary lithium battery can still be studied in depth, but Mu Yang wants to pause and let the battery project team digest the ternary lithium battery technology he bought first.

Therefore, battery research comes to an end.

Mu Yang has already decided on the technical direction he plans to research, which is additive technology, commonly known as 3D printing, rapid prototyping, and physical free manufacturing.

This is a fusion of computer-aided design, material processing and molding technology. Based on digital model files, special metal materials, non-metal materials and medical biological materials are extruded, sintered, melted and light-cured through software and CNC systems.

, spraying and other methods to pile up layer by layer to create manufacturing technology of physical objects.

Compared with the traditional processing mode of removing, cutting and assembling raw materials, it is a "bottom-up" manufacturing method through material accumulation, starting from scratch.

What is “top-up”?

It's just like building a house. You can only start from the bottom and build it up layer by layer.

This additive technology has long been applied, such as additives for cold processing materials such as plaster statues and polymer materials.

But the most difficult thing is adding metal materials!

Because metal must be melted, the temperature is very high, and the fusion temperatures of different materials are different. In the next few years, the most used material will be titanium alloy additives.

This 3D printing technology is so powerful that it is mainly used in manufacturing complex materials that cannot be produced by conventional processing methods, which is why 3D printing was born.

For example, if we design a hollow metal ball, can it be made through mechanical processing?

no!

The equipment cannot be used for construction because it will eventually need to be sealed.

Machining is a "subtractive" process, that is, material removal processing technology, using tools to cut away material.

This is a bit like when we eat watermelon. Without cutting the watermelon, is there any way to take out the meat inside? Just leave a watermelon rind?

The general method is to drill a small hole and suck out the watermelon flesh.

But how do you absorb metal?

Can't suck it!

This is not magic.

Moreover, after drilling a hole, it is no longer a whole.

If you use the manufacturing method, you need to process two hollow hemispheres first, and then use welding to weld them together.

This is the most conventional processing method, but what problems will it cause?

For example: the inside of the welding is not smooth, defects are prone to occur, the welding will be deformed, the welding cost is high, welding internal stress and other problems.

There are also casting, friction welding, etc., which cannot achieve internal defects.

Conventional manufacturing methods cannot perfectly create a hollow metal ball.

However, if metal additive technology is used, it can be achieved.

It's like building a house, adding materials bit by bit to "fill it up".

Compared with the traditional material removal processing method, it is "additive". The hollow ball weighs as much material as it needs. There is no processing leftover material, and the material utilization rate reaches 100%.

But it has three biggest problems.

The first is the low efficiency of additive manufacturing and long working hours;

The second is the problem of layer thickness, which is currently developing towards 0.01mm. If the layer thickness is excessive, the accuracy and surface roughness will be very poor;

The third is that it has poor plasticity and toughness. For example, if it is used to process shafts, it will not work!

It can be machined, but the machined shaft has poor toughness and is easy to break!

Therefore, important shafts are forged, not cast!

3D printing is actually a form of casting. It just means that conventional casting is pouring, where the molten material is poured directly into the model, while 3D metal printing requires a smaller amount.

Mu Yang felt that he could not solve this shortage problem, so he never wanted to study this technology, but he knew that it would definitely be used in the future, and it would not work without it!

For lightweighting, one of the key advantages of additive manufacturing can be exploited: the ability to produce complex parts.

For example, flying cars can solve problems not only through material selection but also through complex structural design, which cannot be solved through conventional manufacturing methods.

On the other hand, assembly of the final part or subassembly is a routine part of the manufacturing process and requires additional time, equipment, labor and quality control. Assembly points can create problems. Assembly points add additional space through fasteners.

weight, resulting in increased operating costs in fuel-consuming applications.

Assembly points are also common points of failure, and if a connection point is weakened, it can lead to undesirable risks or downtime. For these reasons, finding innovative and effective ways to eliminate or reduce assembly parts can bring benefits to numerous areas.

One branch of complex parts that additive manufacturing excels at is integrated assemblies and one-piece designs. Additive manufacturing allows parts to be connected during the design phase and seamlessly integrated during production.

This means less fasteners are needed and the total number of parts produced is reduced, with a corresponding reduction in assembly weight.

Mu Yang opened the reading system.

【Reading system】

[Level 6: 42.3Y/100Y] (current experience/upgrade experience)

Without experience: 122250.5W

Amount of cash that can be withdrawn: 915,220,000 yuan

Muyang

22 years old

Advanced Mathematics: Level 7 (2Y/20Y)+

Discrete Mathematics: Level 6 (8000W/2Y)+

Mathematical Analysis: Level 7 (2Y/20Y)+

Complex variable function: Level 6 (6000W/2Y)+

Analytical geometry: Level 7 (2.2Y/20Y)+

Topology: 7 levels (3.2Y/20Y)+

…

Mu Yang has extremely high attainments in mathematics, followed by knowledge in manufacturing.

The amount of cash available for withdrawal is still over 900 million, and Mu Yang withdraws it every once in a while and enters his overseas account.

The system says that his concerns can be resolved through some special means, so that must be no problem.

There are still 1.2 billion experience, which may seem like a lot, but in fact it is not much. If you spend it, it will be used up in a short time. It can only be used to upgrade 6 level 7 subjects, or to solve a few mathematical conjectures.

If you want to upgrade your reading system to level 7, it will take at least a year and a half.

Let’s start with the basic additive technology to lay a solid foundation for the future.

Xinghai Group is good at plasma welding and laser welding technology, and then studying additive technology is a higher level technology in this field.

The additive technology he wants to study uses laser beams, electron beams, plasma or ion beams as heat sources to heat materials to combine them and directly manufacture parts. This is called high-energy beam rapid manufacturing, which is an important branch in the field of additive manufacturing.

Most common in industrial fields.

In the field of additive manufacturing technology in the aerospace industry, high-energy beam rapid manufacturing of metal, non-metal or metal matrix composite materials is currently the fastest growing research direction.

Aviation is the fastest growing application field of metal additives because of its ability to reduce manufacturing costs.

The current market size of metal additive technology is around US$1 billion, which seems small, mainly due to low efficiency and accuracy issues.

If Muyang can solve these two problems, the market size will increase more than ten times even if the price correlation is not significant.

Mu Yang searched for metal additive-related technologies in the Achievement Point store, and in an instant, he saw dozens of metal additive-related technologies.

Read the technical introduction one by one,

An hour later, a technology suitable for the development of Xinghai Group was found.

★A new metal additive laser additive manufacturing technology LDM01★

[Technical introduction: LDM (Laser Deposition Melting) technology is an organic combination of rapid prototyping technology and laser cladding technology. It uses metal powder as raw material, high-energy beam laser as heat source, and is planned based on hierarchical slicing information of the CAD model of the formed part.

By scanning the path, the supplied metal powder is melted layer by layer, rapidly solidified, and deposited layer by layer, thereby realizing the direct manufacturing of the entire metal part.

It has the following advantages: the forming size is not limited, and large-size parts can be manufactured; the parts have no macrosegregation, the structure is fine and dense, and the mechanical properties reach the level of forgings; the laser beam energy density is high, and it can realize the processing of refractory and difficult-to-process materials.

Near net shape...]

[LDM01, the world's top level, about 4-8 years ahead of the most advanced technology in current laboratories, demand achievement points: 100]
To be continued...