Do you really know about boron steel?

When it comes to boron steel, in fact, many people have little understanding, and some people even confuse high-strength steel with boron steel. Some people say that the proportion of boron steel is particularly high, so it is particularly safe, but this is only half true. In layman’s terms, the use of boron steel is a matter of conscience; the use of boron steel is good, and the use of boron steel is ability.

Yesterday, I was chatting with a friend who is in the same industry. He has been driving the luxury Sedan for more than 3 years and told me that he wants to change the car because his wife has just become pregnant and the smell in the car has not dissipated. I am afraid that it will affect the child and need to replace it.

I: "Do you like it?"

Friend: "I want to see the new intermediate"

Me: "Oh, just because it’s more environmentally friendly?"

Friend: "Hey, not all of them. Everyone says it’s safer. I value this more when I have children."

Me: "Tell me where is safer"

Friend: "I knew the first person to invent the seat belt…"

You see, in fact, sometimes industry insiders don’t have much better opinions on a certain issue than ordinary consumers. For example, my friend didn’t know that the invention was actually "."

The most shining labels on the body are undoubtedly "safe" and "environmental protection". Perhaps because such labels are too eye-catching, many people do not realize where the safety lies under such labels. Its safety core may be as simple as its Nordic appearance.

Externally Soft and Inner "Steel": The Profundity of Boron Steel in Body Structure

When it comes to safety, it must be mentioned; when it comes to materials, some people say materials; when it comes to materials, high-strength steel must be the word with the highest appearance rate. Today we will talk about the story behind high-strength steel. Boron steel, one of the best structural steels, is the guest here today.

"Hello everyone, my name is Boron, and my English name is Boron. 0.001% of the earth’s crust is composed of my brothers and sisters."

Boron is a non-metal, its hardness in nature is second only to stone, it is widely used in the production of nuclear reactor control rods, and can also be used in the manufacture of alloys. Boron steel, as the name suggests, is a steel that is mainly alloyed with boron. After adding alloy boron, the steel has very high hardenability, high wear resistance and good fatigue resistance, and is an excellent structural steel.

Like many scientific technologies, boron steel was first used in the military industry, especially in the aerospace industry and submarine manufacturing. With the vigorous development of the manufacturing industry, boron steel has a new "application". As a large-scale industrial product, in addition to high strength, good craftsmanship is also an important factor, that is, the difficulty of steel processing cannot be too high. The appearance of boron steel and heat treatment technology perfectly meets this demand.

You might ask, "How?"

First of all, the strength is very high, and the nominal strength of boron steel after hot forming treatment reaches 1500 MPa, which has good safety performance.

? Secondly, the forming performance is good. The traditional process of manufacturing complex-shaped parts usually requires multiple ordinary steel parts to be welded, while the thermoforming process often requires only one part to solve this problem. The picture below shows the composite diagram of the vehicle B-pillar assembly. The left side is ordinary steel, which requires several parts to be welded. The right side is thermoformed steel, which is integrally stamped and formed, visible to the naked eye.

Combined with these characteristics of boron steel, it is mainly used as structural steel in the industry. The structural strength of boron steel is greatly increased, which improves the anti-extrusion ability, and then protects the life safety of the occupants in the car in the event of a collision. At the same time, boron steel thermoformed parts are also the most valuable lightweight materials at present. Advances in materials and processes make it convenient for people to travel while meeting increasingly stringent safety and emission regulations.

Known for its safety, it naturally excels in the application of boron steel. Its XC90 uses nearly 40% of boron steel, S90 uses 35% of boron steel, and V90 CC and XC60 use 35% and 34% of boron steel, respectively.

Have you learned this knowledge of boron steel?

Of course, you might say that boron steel is so powerful that the more it is used in the car, the safer it is? Let’s continue to look at it.

"Steel" is soft and easy: tell you

How should excellent design be done?

As an important part of the vehicle, it is necessary not only to meet the aesthetic requirements of appearance and vision, but also to meet the requirements of aerodynamics, man-machine performance, and NVH performance. More importantly, it is necessary to protect drivers and passengers against impact.

Generally speaking, people tend to divide the simple into and, which is often not enough when talking about safety. Stephan Ryrberg, senior principal engineer at the Group Security Center, said that a complete collision should be divided into three stages:

The first stage is the energy-absorbing collision of the front structure. This stage generates a specific energy, and we () want the front of the car to absorb as much energy as possible. So sometimes the front of the car looks badly damaged after the collision, but it actually protects us effectively. Of course, the structure must be energy-absorbing and deformed under strict control.

The second stage is the collision of the occupant compartment, that is, the direct collision between the occupant and the restraint system in the vehicle. Seat belts, etc. protect the occupant by absorbing the impact energy to significantly reduce the energy transmitted to the next stage.

The third stage occurs inside the human body, and different organs will collide with each other in the body. If the structure of the vehicle is well designed, the energy transmitted to the second and third collisions will be weakened accordingly, thus reducing the damage to the human body. "

With these insights in mind, let’s talk about what requirements a person who excels in safety should meet.

01

In the investigation of safety accidents, it is shown that the proportion of occupant deaths caused by frontal collisions is the highest, so in the event of a frontal collision, the energy absorption of the front structure has a significant relationship with the deformation of the cockpit. The greater the deformation of the energy absorption zone in a frontal collision, the more the collision energy is absorbed, and the impact force can be avoided as little as possible to the passenger compartment.

This process belongs to the "energy-absorbing collision of the front structure", and in the design, the front should absorb as much energy as possible to reduce the acceleration of the collision.

In the frame is the energy absorption design of the front structure. The material distribution map clearly shows the design idea. The yellow front stringer and the green front do not use ultra-high-strength thermoformed steel. The stringer uses medium-strength steel, and the front uses an aluminum alloy cavity structure with lighter weight and better energy absorption effect.

This design can ensure that the front structure can quickly collapse in the event of a frontal collision, which absorbs kinetic energy, thus ensuring the integrity of the cockpit. It can be seen that it is not blindly pursuing strength, but choosing the most suitable material in the appropriate part to ensure the safety of the passengers in the car as the first consideration.

Words like "soft" and "crashless" are often used to describe a car that is not strong, but in fact, through professional crash tests such as E-NCAP, C-NCAP, IIHS, etc., it can be seen that the collapse energy absorption design can greatly improve crash safety, that is to say, a reasonable "soft" is actually conducive to safety.

02

The second most common death rate in a car accident is a side collision. Since there is no buffer zone on the side, there is only one fan away from the outside world when a collision occurs, so the strength and the frame strength of the occupant compartment become the foundation for protecting the occupants in the car. Common measures include increasing the strength of the interior; increasing the strength of the sidewall components, including increasing the cross-sectional shape and thickness of the B-pillar and C-pillar; increasing the strength of the threshold beam; installing a beam system at the height of the B-pillar; and installing reinforced beams below and under the rear windshield.

We still take the XC90 as an example. The part in the blue box above is the most important crew compartment. Its importance can also be seen from the distribution ratio of ultra-high-strength thermoformed boron steel. The red thermoformed boron steel is almost all distributed in this area.

As the saying goes, "good steel is used on the blade", hot-formed boron steel is uncompromising "good steel", of course, it must also be used on the "blade".

The thermoformed boron steel with the best yield strength is used in the side-B-pillar-C-pillar-middle channel-lower threshold and the foot pedal area in front of the driver and co-pilot, that is to say, when you open it, all the hidden under the door frames are thermoformed steel with a strength of up to 1500Mpa; when you sit in the driver’s seat, the pedal area under your feet, and under your center armrest, all use thermoformed steel with a strength of up to 1500Mpa. The front, rear, and left of the driver are surrounded by thermoformed boron steel, forming a safe cage structure.

The purpose of this approach is to effectively transmit the impact force to the protective beams, columns, floors, roofs, and other components in the event of a collision, so that the impact force is dispersed and absorbed by these components, which greatly improves the anti-collision ability and overall safety. It is not easy to deform in the event of a collision, and better protects the safety of the occupants in the vehicle.

In addition, the linear and coherent force transmission path design can maximize the absorption and dispersion of the impact force throughout, whether it is a frontal collision or a side collision, the impact kinetic energy can be evenly distributed to the skeleton through a coherent force transmission path, reducing the deformation of the internal space as much as possible at the moment of impact.

Niu Chengze’s new film "Paradise in the Army" exposes stills, Ruan Jingtian shows off his pectoral muscles


"Military Paradise" stills
 
  Director Niu Chengze’s new work recently released the first wave of stills. The male protagonist Ruan Jingtian and the Sea Dragon Frog Soldier only wore red shorts and raised the boat topless for training, showing dark pectoral muscles and "ice cube box" six-pack abdominal muscles, exuding masculine energy. Xiao Tian said that he lost nearly five kilograms in a few months, and he had never been fucked so badly in a movie, and even jumped too hard. The red pants were split in half.
 
  "Paradise in the Army" is a cross-era commercial and artistic blockbuster that has been in preparation for two years and spent NT 250 million to film. After Taiwanese films fell to the bottom to return to activity, Doudao conceived for eight years and hoped to bring to the screen the strong emotional story that the sea water once separated the two sides of the Taiwan Strait but could not be separated. On the eve of the start of filming, he illegally entrapped Chinese mainland photographer Cao Yu into the naval port to board the ship. The exposure of the incident caused the military to refuse to assist in filming, and at the same time it was transferred to judicial organs for investigation. The shooting schedule was delayed for a time. The main creative team gritted their teeth and finished filming the film in a low-key manner, and decided to move the audience with their works. The Facebook fan page that opened on the seventh day also specially planned to "open the black special zone for villagers indefinitely" for netizens to
 
 
"Military Paradise" stills
 
  Ruan Jingtian plays the Sea Dragon Frog Soldier in the film. He and the other actors who play the Frog Soldier complete the half-year training results of the average Amphibious Reconnaissance Camp Frog Soldier in one month. They teach ten hours a day according to the schedule, including fighting skills, standard frogman exercises, long-distance swimming of 3,000 meters, and long-distance running of 5,000 meters. They are forged from their original "white beheaded chicken" body into a "chocolate ice cube box". He said, "It’s basically a sun tanning machine and a super ice cube maker that take turns to play! I have never made a movie with such miserable training, but it’s really worth it." Xiao Tian is not afraid of hardship, his biggest weakness is that his tendons are too hard, and every time he pulls the tendons, he always has to send four coaches to "serve", which is painful with tears, sweat, and wailing.
 
  The red shorts of the Sea Dragon Frog Soldier were eye-catching. Due to the wide opening of the trousers, Xiao Tian was always on the edge of exposure every time he jumped the Sea Dragon Exercise, and the shape was even vaguely visible.
 
  "Paradise in the Army" is set in the Battle of Kinmen in 1969. The story describes that Cainiao Xiaobao (played by Ruan Jingtian), a sea dragon who has been brutally withdrawn from training, is distributed to a special tea room known as "Paradise in the Army". In the tea room, he meets the same ladder, becomes friends with the devil sergeant Lao Zhang, who torments him, and even develops a subtle relationship with Nini, the tea room waiter. One day, there is an accident in the tea room! Under the wind and jitters, Xiaobao accidentally learns Nini’s hidden secret; the world begins to collapse, and everything is gradually out of order and cannot be cleaned up. The film will be released in Taiwan, China on September 5.

Hong Jinbao’s re-emergence of the classic lead "Huang Feihong" protagonist remains a mystery


Samuel Hung stars in the new version of "Wong Fei Hung"

    The most classic Chinese kung fu film is about to be remade again. The reporter learned from the filmmaker yesterday that "Huang Feihong’s Hero has a Dream", which is jointly invested by Anle Film Co., Ltd., Wanyuan Gravity Film Co., Ltd., Shengfei International Digital Special Effects Production Co., Ltd. and other parties 80 million RMB, will start filming in Shanghai and Wuzhen. The film recruits the strongest soldiers in the Chinese film industry, and in line with the tenet of "challenging the classics and replicating the classics", creates a new version of the classic kung fu film and pushes it to the world. At the same time as announcing the shooting plan, the filmmaker also announced the first batch of main creators yesterday, and all stars such as Hong Jinbao, Jing Boran, Wang Zulan, Zhang Jin and Feng Jiayi joined. Jiang Zhiqiang, Liu Erdong and Ho Yunming are the film producers, the director is Chow Hsien Yang, and the screenwriter is Du Zhilang, a talented Hong Kong woman. At the same time, Yuen Kui is the action director, and Liu Fang is the martial arts director. The most talked-about role of Huang Feihong remains mysterious.


Jing Boran, Wang Zulan, etc. are the first batch to announce the list of actors

Challenge the classics, copy the classics

    "Wong Fei Hung’s Heroes Have Dreams" was produced by former gold producer Jiang Zhiqiang. Directed by Hong Kong director Chow Hsien Yang, the former director of "The Great Hunt" and the latter is the screenwriter of He.

    After 20 years of filming Tsui Hark’s version of "Wong Fei Hung", it is no small ambition to challenge the kung fu classics again. In this regard, Mr. Jiang Zhiqiang said that this move is actually to make some efforts for the kung fu genre. "I have sold a lot of films abroad, and I deeply feel that only kung fu films can travel all over the world in Chinese movies. But after so many years, in the Chinese film world, there are fewer and fewer creators who can really make kung fu films. If you don’t make a classic, I am afraid that it will become a swan song. And’Wong Fei Hung ‘is the pinnacle of kung fu movies. We don’t want to challenge the classics, we only want to be able to copy the classics and leave the world a good
"No one has brought Wong Fei Hung to the big screen for more than 20 years," the director, Chow Hsien Yang, emphasized. "This is the longest’Wong Fei Hung vacuum ‘in Chinese film history since the 1950s. So this year is the best time to reshape the’new Wong Fei Hung series’. After a long preparation, I am full of confidence in it."

Real boxing, real kung fu

    Continuing the previous Xu Ke version of the "Huang Feihong" series, this time "Huang Feihong" is subtitled "Heroes Have Dreams". It tells the story of the late Qing Dynasty, by the Pearl River wharf in Guangzhou, the Black Tiger Gang carried out despicable human trafficking activities. Huang Feihong was very anxious when he saw it. He and his friends cleverly set a trap, saved the poor, created a new world with their hands, and began Huang Feihong’s legendary life…

    "Wong Fei Hung is an example of an Oriental superhero. This time’Wong Fei Hung ‘wants to talk about dreams, the spirit of’knowing that you can’t do it and doing it’. In times of despair, with personal will, self-improvement belief, and strong physique, you can achieve the impossible. I firmly believe that perseverance is the final victory. Start with your own beliefs and expand them to infect others and unite everyone. This is: Wong Fei Hung." Zhou Xianyang introduced that the film will retain the essence of many "Wong Fei Hung" movies. "The biggest feature is that all our actors must really fight real punches and have real kung fu. Therefore, every actor who enters the group to act will basically come to practice in advance. So far, everyone’s progress has been rapid, which makes me very confident in the movie."
It is reported that in order to show the real boxing and real kung fu, the film also specially invited the international action director Yuan Kui as the action director to train the actors in martial arts moves. At the same time, the famous Nanquan master was also invited to teach boxing for several main creators. "I know that filming’Wong Fei Hung ‘is very stressful, but our determination is greater, and perseverance will be the greatest," the director said.

Hong Jinbao led Jing Boran to join

    Since the real boxing is real kung fu, the cast of "Wong Fei Hung’s Hero has a Dream" is also highly anticipated. Hong Kong movie veteran actor Hong Jinbao, film and television song king Jing Boran, kung fu star Zhang Jin, as well as popular superstar Wang Zulan and powerful actor Feng Jiayi are the first to be announced.

    Among them, Hong Jinbao is the big brother of kung fu movies, leading "Qi Xiaofu" including Jackie Chan to pioneer a new genre of Chinese movies. Joining "Huang Feihong" this time is also intended to revive kung fu movies and create a new world of movies in this genre. Jing Boran, the little king of the mainland, has starred in just a few years, and Teng Huatao’s new play with him as the male lead is about to be released. It has been regarded as one of the most promising male actors in the industry in the future.

    The actor, Zhang Jin, is a national champion of martial arts in Chen-style tai chi and tai chi swords, as well as a champion of spear and swordsmanship. He has appeared in several kung fu movies, including the impressive Ma San in Wong Kar-wai. Wang Zulan played a character in "Wong Fei Hung," challenging his comedic character. As for Feng Jiayi, who has performed splendidly in TV series such as "Double-sided Tape," "Wo Ju Ju" and "Naked Marriage Times," this time he will play the boss of the Black Tiger Gang in "Wong Fei Hung," which is his period costume debut.

    The director, Chow Hsien Yang, said that he had spent months watching the actors’ works and trying on makeup. "This story needs a big brother like Samuel Hung to be in charge, and we also hope that a group of young people such as Jing Boran will bring more youthful elements to the film." He also revealed that Hong Jinbao will play a domineering villain in the film this time. However, the director said that there is still suspense about the choice of the core character Huang Feihong.

Samsung Galaxy S24 series launched in China, priced at 5,499 yuan

  China Economic Net, Beijing, January 26th (Reporter, Li Fang) On the evening of January 25th, Samsung officially launched the Galaxy S24 series for the Chinese market. In the AI era, Samsung took the lead in introducing AI advantages into smartphones to promote the implementation of large language models. Among them, the Galaxy S24 series launched the function of real-time call translation, which can translate the call content in real time without the use of the third-party app, achieving barrier-free communication across languages. If you encounter something you want to know during your journey, you can take a picture and search directly through the click-and-search function without entering keywords.

  "The Samsung Galaxy S24 series will reshape the technology landscape with a meaningful AI experience, opening the door to the future through Galaxy AI, which integrates local and cloud general capabilities, inspiring more possibilities for the future, empowering consumers to live rich and diverse lives and enhancing the quality of daily life," said Choi Seung-shik, president of Samsung Electronics Greater China.

  It is reported that in the process of creating an AI experience for the Galaxy S24 series, China’s Samsung and Baidu Intelligent Cloud have formed a Galaxy AI ecological strategic partner to conduct in-depth research on how mobile phone scenes are combined with large models, and bring a number of AI applications based on Baidu Intelligent Cloud Qianfan platform. In addition, Samsung Album and Meitu have further deepened cooperation, and based on Meitu’s self-developed AI vision model MiracleVision, it has brought AI map modification, AI map expansion, AI map generation and other functions.

  In terms of price, the recommended retail price of Samsung Galaxy S24 Ultra starts at 9,699 yuan, providing three storage specifications: 12GB + 256GB, 12GB + 512GB, and 12GB + 1TB; the recommended retail price of Samsung Galaxy S24 + starts at 6,999 yuan, providing 12GB + 256GB, 12GB + 512GB storage specifications; the recommended retail price of Samsung Galaxy S24 starts at 5,499 yuan, providing 8GB + 256GB, 12GB + 256GB, and 8GB + 512GB storage specifications.

  

What day, month and date is Christmas (when is Christmas)

Hello, everyone. Xiaole will answer the following questions for you. When is Christmas? Many people still don’t know when it is. Now let’s take a look!

1. Date of Christmas in 2020: Friday, December 25th, 2020.

2. Christmas, also known as Christmas Day, is translated as "Christ Mass", which originated from Saturnalia, the ancient Romans welcoming the New Year, and has nothing to do with Christianity. After Christianity prevailed in the Roman Empire, the Holy See drifted into the Christian system to celebrate the birth of Jesus. But Christmas is not the birthday of Jesus, because the Bible does not record the specific date when Jesus was born, nor does it mention the existence of such a festival, which is the result of Christianity absorbing ancient Roman mythology.

This article ends here, hoping to help you.