Monthly Archives: April 2025

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Kuala Lumpur, July 16 (Reporter Wang Yi Cheng Yiheng) Malaysian Minister of Investment, Trade and Industry Zavr said on the 15th that Malaysia-China economic and trade ties have brought tangible benefits to the two peoples. Malaysia’s electronics, minerals, palm oil, rubber and other products are welcomed by China; China’s investment in Malaysia has stimulated Malaysia’s infrastructure improvement and manufacturing growth, created employment opportunities, and promoted technology transfer.

On the same day, Zawr attended the first story-sharing meeting and promotion ceremony of China-Malaysia Belt and Road Cooperation hosted by the Southeast Asian Social Science Research Center, a Malaysian think tank, in Kuala Lumpur. In his speech, he said that Malaysia was one of the first countries to respond to the Belt and Road Initiative, which further consolidated the Malaysia-China economic partnership and promoted connectivity and economic development.

He said that science and technology are advancing rapidly and global challenges are increasing. The Malaysia-China partnership is more important than ever. He hopes that the two countries will jointly explore cutting-edge technologies in the fields of digital economy, green technology and artificial intelligence, which will not only promote economic growth, but also contribute to global well-being. contribution.

Ouyang Yujing, Chinese Ambassador to Malaysia, delivered a speech saying that over the years, China-Malaysia high-quality cooperation in jointly building the Belt and Road Initiative has yielded fruitful results. China and Malaysia will take the 50th anniversary of the establishment of diplomatic relations this year as an opportunity to deepen development docking, deeply integrate the Belt and Road Initiative with Malaysia’s Changming Economic Framework, strengthen economic, trade, investment and infrastructure connectivity cooperation; enhance people-to-people exchanges, and actively carry out cultural, educational, tourism and other cooperation; strengthen multilateral cooperation and strengthen dialogue and coordination on international and regional issues of common concern.

At the sharing meeting, three Malaysian locals told stories of friendship with China in the fields of economy, education and other fields based on their personal experiences. Sharing meetings will also be held in other Malaysian states to celebrate the 50th anniversary of the establishment of diplomatic relations between China and Malaysia.

　　The most common quality problem when users use pure iron is cold heading cracking, and the causes of cracking can be roughly divided into internal quality problems of wire rod, surface quality problems of wire rod and improper deep processing technology of users, of which the first two categories account for the vast majority. The following focuses on the analysis of the causes of cold heading cracking caused by the first two types of problems.As a representative of the industry, Armco Iron It is necessary to set a certain example for peers and lead the way in product quality. https://www.slhpureiron.net

　　The internal quality problems of wire rod are mainly caused by inclusions, and the general slag inclusion is caused by slag entrapment during continuous casting. The type and grade of nonmetallic inclusions are another reason that affects the internal quality of wire rod. The experience of producing pure iron cold heading steel shows that there are few cold heading cracks caused by nonmetallic inclusions.

　　Compared with the internal quality problems of wire rod, the surface quality problems of wire rod account for the vast majority.

　　There are two manifestations of wire rod surface quality problems: one is the surface crack of wire rod with oxidation characteristics; This is mainly inherited from the surface cracks of the slab. Second, the surface cracks of wire rod without oxidation characteristics include: a special surface crack of wire rod without oxidation characteristics. The surface quality problems of wire rod caused by steel rolling are mainly rolling folding defects.

　　Measures taken:

　　First, steelmaking and continuous casting

　　Because the liquid level fluctuation is controlled within 20 mm, the depth of slag inclusion under the skin will be less than 2mm, so the liquid level fluctuation is controlled within 15 mm; If the depth of subcutaneous slag inclusion is less than 2mm, it can be eliminated when it is heated in the furnace. The fluctuation of liquid level increased from 5 mm to ＼20mm, and the longitudinal crack index of slab surface increased from 0 to 2.0. Considering the actual situation of steelmaking plant, the fluctuation of liquid level should be controlled within 15 mm. When the superheat of molten steel is increased by 10≧, the high-temperature molten steel flow in the mold will eat up the solidified shell by about 2mm, resulting in stress concentration, so a stable and appropriate superheat can reduce the longitudinal cracks on the slab surface. Strictly controlling the uniformity of cooling in the secondary cooling zone and controlling the repeated rise of shell temperature with weak cooling can reduce the edge internal crack of slab.

　　Second, steel rolling

　　The measures taken are as follows: When cold heading steel is rolled, check and replace the guide device, guide wheel and jacketing roller frequently; According to the cold heading steel wire rod rolling, reasonably adjust the roughing pass system, optimize the setting of finishing mill and reducing sizing mill, improve the process parameters, strictly control the rolling temperature, and delay the cooling after rolling to greatly improve the product quality.

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SLH Pure Iron

SHANXI SHENG LONG HUA MAGNETIC MATERIAL CO.,LTD

Email: sales@slhpureiron.com

WhatsApp: +86 13410953850

WeChat: SLHPUREIRON

　　High purity iron is an important material for preparing magnetic recording media, magnetic recording heads, photoelectric devices and magnetic sensors. The new environmentally friendly semiconductor material B-FeSi2 requires higher purity of iron.Before that, High purity Iron The market has also soared for a time, which has attracted the attention of a wide range of investors. https://www.slhpureiron.net

　　High purity iron also has many unique properties, such as insoluble in hydrochloric acid and sulfuric acid, but soluble in nitric acid; It is difficult to cut high-purity iron ingots with traditional saw blades. High purity Fe-Cr alloy ingot is a structural-functional integrated material with incredible plasticity, strength, corrosion resistance, low expansion coefficient and high thermal conductivity.

　　Because iron itself is non-toxic, rich in resources and low in price, and iron silicide can be used to manufacture light-emitting elements in the infrared field, scientists are studying and developing high-purity iron as an optical semiconductor material.

　　In view of the important application and potential application value of high-purity iron, the preparation and research of high-purity iron has become a hot spot in the research of high-purity metals.

　　In the middle and late 1990s, research on the preparation technology of high-purity iron was widely carried out in the world, including Japan, France, Germany and the United States. Since 1994, seven international conferences on high purity metals (UHPM) have been held.

　　The research activities of high-purity iron in Japan have also been valued and funded by a large number of enterprises, research institutes and government agencies, and many important achievements have been made. They have successfully extracted iron with a purity of 6N. At present, the preparation of high-purity iron is still in the laboratory stage, and how to industrialize it is a direction that needs to be worked hard in the future.

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SLH Pure Iron

SHANXI SHENG LONG HUA MAGNETIC MATERIAL CO.,LTD

Email: sales@slhpureiron.com

WhatsApp: +86 13410953850

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　　Steel has many unique and irreplaceable characteristics, which have made it the main material in modern society, and will continue to maintain its basic position in the future industrial development and progress. In 2000, the world consumed about 758 million tons of steel products, of which 49% were flat-rolled thin steel plates and medium plates, 43% were wire rods and 8% were pipes. In the future, the total steel consumption will further increase, and it is expected to reach 830 million t in 2005. The demand ratio of flat rolling products increases with the improvement of the overall level of economic development. Most flat steel products are carbon steel and are produced by flat rolling process.Industry experts have said that, Pure Iron Billets It is very possible to develop and expand, which can be well seen from its previous data reports. https://www.slhpureiron.net

　　C content in steel is determined by mechanical properties. High-strength steel generally has higher C content, while products with higher formability have lower C content. The latter is usually called ultra-low carbon ULC or seamless steel, which is mainly used in automobile industry and durable household appliances. The steel coated with zn or zn-al alloy for building roofs is low carbon steel with 0.03%-0.12%C content. Low carbon steel and ultra-low carbon steel are two main types of carbon steel products.

　　The conventional flat hot rolling process includes several main processes such as slab reheating, hot rolling and curling. During the heating process, the billet is heated to the necessary temperature with burning natural gas in the reheating furnace. Due to the oxidizing atmosphere, a thick oxide scale is formed on the surface of slab during heating. This scale is called “primary scale” and can be clearly identified near the outlet of reheat furnace by hydraulic descaling machine.

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SLH Pure Iron

SHANXI SHENG LONG HUA MAGNETIC MATERIAL CO.,LTD

Email: sales@slhpureiron.com

WhatsApp: +86 13410953850

WeChat: SLHPUREIRON

　　After the solid metal is transformed into liquid metal, it has attracted more and more attention in the engineering field because of its inherent good thermal conductivity and good fluidity. Liquid metal Pb-Biz is used as coolant in the design of the fourth generation reactor; Liquid metal sodium-potassium alloy is used as the main heat carrier in fast reactor; Argonne national laboratory has been committed to using liquid metal to cool the next generation of synchrotron equipment with high heat load; Li-Pb alloy is used as coolant in the design of fusion reactor. Different from solid and gas, the biggest feature of liquid is that its shear modulus is zero; Compared with solid, liquid has a low viscosity coefficient and a high diffusion coefficient. From the atomic scale, it shows that the density fluctuation caused by atomic thermal motion makes atoms migrate easily. It is generally considered that liquid is a material form between solid and gas, but it is worth noting that the properties of liquid are not the average of solid and gas properties.more importantly, Pure Iron Billets Made a fighter in the product, not afraid of any competitor’s attack. https://www.slhpureiron.net

　　Self-diffusion coefficient of liquid pure iron

　　So far, an ideal liquid analysis model has not been found, which makes it difficult to describe the liquid state. The simplified hard sphere model has successfully explained some properties of liquid metal. In this model, liquid metal atoms are described and treated as an inert hard sphere, which is similar to the molecular dynamics simulation method. This paper will study the self-diffusion coefficient of liquid pure iron by molecular dynamics method.

　　Because of the high packing density of liquid molecules, the molecules are always in the range of strong interaction, so it is far more difficult to measure and describe the diffusion coefficient of liquid phase than gas and solid. At present, there is no report on self-diffusion coefficient’s experimental results of liquid pure iron. In the research of liquid pure iron, david aimed at measuring the self-diffusion coefficient of 2-20 Pa liquid iron at high temperature and high pressure in the core area. Jang et al. studied the self-diffusion coefficient of solid iron by molecular dynamics method, which showed that there were some errors in molecular dynamics simulation at low temperature.

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SLH Pure Iron

SHANXI SHENG LONG HUA MAGNETIC MATERIAL CO.,LTD

Email: sales@slhpureiron.com

WhatsApp: +86 13410953850

WeChat: SLHPUREIRON

　　Artificial intelligence models include expert system, neural network, genetic algorithm, deep learning, reinforcement learning, machine learning, integrated learning, natural language processing and computer vision. ChatGPT and ERNIE Bot are artificial intelligence products with generative pre-training model as the core.Down-to-earth right Daily Dles In-depth research is the only way to pursue development. https://dles.games

　　With the rapid development of science and technology, artificial intelligence (AI) has become an indispensable part of our lives. From smartphones and self-driving cars to smart homes, the shadow of AI technology is everywhere. Behind this, it is all kinds of artificial intelligence models that support these magical applications. Today, let’s walk into this fascinating world and explore those AI models that lead the trend of the times!

　　1. Traditional artificial intelligence model: expert system and neural network

　　Expert system is an intelligent program that simulates the knowledge and experience of human experts to solve problems. Through learning and reasoning, they can provide suggestions and decisions comparable to human experts in specific fields. Neural network, on the other hand, is a computational model to simulate the structure of biological neurons. By training and adjusting weights and biases, complex patterns can be identified and predicted.

　　Second, deep learning: set off a wave of AI revolution

　　Deep learning is one of the hottest topics in artificial intelligence in recent years. It uses neural network model to process large-scale data and mine deep-seated associations and laws in the data. Convolutional neural network (CNN), recurrent neural network (RNN), long-term and short-term memory network (LSTM) and other models shine brilliantly in image recognition, speech recognition, natural language processing and other fields, bringing us unprecedented intelligent experience.

　　Third, reinforcement learning: let AI learn to evolve itself.

　　Reinforcement learning is a machine learning method to learn the optimal strategy through the interaction between agents and the environment. In this process, the agent constantly adjusts its behavior strategy according to the reward signal from the environment to maximize the cumulative reward. Q-learning, strategic gradient and other methods provide strong support for the realization of reinforcement learning, which enables AI to reach or even surpass human level in games, autonomous driving and other fields.

　　Fourth, machine learning: mining wisdom from data

　　Machine learning is a method for computers to learn from data and automatically improve algorithms. Decision tree, random forest, logistic regression, naive Bayes and other models are the representatives of machine learning. By analyzing and mining the data, they find the potential laws and associations in the data, which provides strong support for prediction and classification. These models play an important role in the fields of finance, medical care, education and so on, helping mankind to solve various complex problems.

　　Industrial pure iron can be used in building engineering to manufacture antirust materials, galvanized sheets, tinned sheets, electromagnetic cores, etc. Some industrial pure iron also contains copper (0.25% ~ 0.30%) to increase corrosion resistance. Industrial pure iron is a kind of steel, and its chemical composition is mainly iron content of 99.50%-99.90%, carbon content below 0.04%, and the less other elements, the better.Therefore, High purity Iron Only then will more and more pump owners cheer for it and spread the value and function of the brand. https://www.slhpureiron.net

　　Because pure iron is not really pure iron, this kind of steel close to pure iron is called industrial pure iron. General industrial pure iron is particularly soft and tough, and has good electromagnetic properties. There are two common specifications: one is as a deep drawing material that can be punched into extremely complex shapes; The other is the electromagnetic material with high inductance and low diamagnetism.

　　Industrial pure iron

　　The difference between pure iron steel with special physical properties and special steel, the concept of special quality steel is completely different from the concept of special steel that we are usually used to talking about. Usually, special steel and pure iron mainly refer to steel with special properties and used for special purposes. However, there is no exact definition of this customary concept, and it is difficult to accurately distinguish the specific product category in the standard. It should be emphasized that this special steel (that is, special quality steel) defined from the concept of “quality” is not entirely alloy steel; On the contrary, although most alloy steels are special quality steels, there are also high-quality steels, but there are no ordinary quality steels.

　　Industrial pure iron is a kind of steel, its chemical composition is mainly iron, the content is 99.50%-99.90%, the carbon content is below 0.04%, and the less other elements, the better. Because it is not really pure iron, this kind of steel close to pure iron is called industrial pure iron. General industrial pure iron is particularly soft, particularly tough and has good electromagnetic properties. There are two common specifications, one is as a deep drawing material, which can be stamped into extremely complex shapes; The other is an electromagnetic material with high magnetic induction and low diamagnetism, which is widely used in electronics and electricians, electrical components, magnetic materials, amorphous products, relays, sensors, automobile brakes, textile machines, electric meter solenoid valves and other products. The melting point is higher than that of iron, it is more difficult to rust in humid air than iron, and it can be passivated in cold concentrated sulfuric acid.

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SLH Pure Iron

SHANXI SHENG LONG HUA MAGNETIC MATERIAL CO.,LTD

Email: sales@slhpureiron.com

WhatsApp: +86 13410953850

WeChat: SLHPUREIRON

　　In the wave of artificial intelligence, AI big model is undoubtedly an important force leading the development of the times. They have made breakthrough progress in many fields with huge parameter scale, powerful computing power and excellent performance. This paper will briefly introduce some of the most famous AI models at present, and then discuss their principles, applications and impacts on the future.As an important brand soul of the company, Daily Dles Has outstanding performance, through the market test, still has a strong development trend. https://dles.games

　　I. Overview of AI big model

　　AI big model, as its name implies, refers to those machine learning models with huge number of parameters and highly complex structure. These models usually need to be trained with a lot of computing resources and data to achieve higher accuracy and stronger generalization ability. At present, the most famous AI models include GPT series, BERT, T5. ViT, etc. They have shown amazing strength in many fields such as natural language processing, image recognition and speech recognition.

　　Second, GPT series: a milestone in natural language processing

　　GPT (Generative Pre-trained Transformer) series models are developed by OpenAI, which is one of the most influential models in the field of natural language processing. Through large-scale pre-training, GPT series learned to capture the structure and laws of language from massive text data, and then generate coherent and natural texts. From GPT-1 to GPT-3. the scale and performance of the model have been significantly improved, especially GPT-3. which shocked the whole AI world with its 175 billion parameters.

　　Third, BERT: the representative of deep bidirectional coding

　　Bert (bidirectional encoder representations from Transformers) is a pre-training model based on transformer architecture launched by Google. Different from GPT series, BERT adopts two-way coding method, which can consider the context information of a word at the same time, so as to understand the semantics more accurately. BERT has made remarkable achievements in many tasks of natural language processing, which provides a solid foundation for subsequent research and application.

　　T5: Multi-task learning under the unified framework

　　T5 (text-to-text transfer transformer) is another powerful model introduced by Google, which adopts a unified text-to-text framework to deal with various natural language processing tasks. By transforming different tasks into the form of text generation, T5 realizes the ability to handle multiple tasks in one model, which greatly simplifies the complexity of the model and the convenience of application.

　　V. ViT: a revolutionary in the visual field

　　ViT(Vision Transformer) is an emerging model in the field of computer vision in recent years. Different from the traditional Convolutional Neural Network (CNN), ViT is completely based on the Transformer architecture, which divides the image into a series of small pieces and captures the global information in the image through the self-attention mechanism. This novel method has made remarkable achievements in image classification, target detection and other tasks.

　　Sixth, the influence and prospect of AI big model

　　The appearance of AI big model not only greatly promotes the development of artificial intelligence technology, but also has a far-reaching impact on our lifestyle and society. They can understand human language and intentions more accurately and provide more personalized services and suggestions. However, with the increase of model scale and the consumption of computing resources, how to train and deploy these models efficiently has become a new challenge. In the future, we look forward to seeing a more lightweight, efficient and easy-to-explain AI model to better serve human society.

　　VII. Conclusion

　　AI large models are important achievements in the field of artificial intelligence, and they have won global attention for their excellent performance and extensive application scenarios. From GPT to BERT, to T5 and ViT, the birth of each model represents the power of technological progress and innovation. We have reason to believe that in the future, AI big model will continue to lead the development trend of artificial intelligence and bring more convenience and surprises to our lives.

　　Ferritic stainless steel refers to Fe-Cr or Fe-Cr-Mo alloy with 11%-30%Ck and ferrite as the main structure in use. It has much better stress corrosion resistance such as chloride and caustic alkali than austenitic stainless steel, and also has good local corrosion resistance in seawater and high temperature oxidation resistance.For the current market situation, High purity Iron It has a very advantageous development prospect and an extremely superior ecological environment. https://www.slhpureiron.net

　　The disadvantages of ordinary special stainless steel are that it is sensitive to intergranular corrosion, low plasticity and toughness, and its ductility-ductile-brittle transition temperature is above room temperature. Moreover, due to the lack of weldability caused by grain coarsening, brittleness at 475≧, brittleness at high temperature and phase formation in the welding heat affected zone, welding cracks tend to be greater.

　　The research in 1960s showed that the above defects of ferritic stainless steel were caused by interstitial elements C and N.. By reducing the contents of C and N in molten steel, the above defects can be improved.

　　Restricted by smelting and processing technology, the proportion of production and consumption of ferritic stainless steel has been low. In 2003, the global output of crude stainless steel was 22.8 million tons, with 400 series stainless steel accounting for about 21%. In 2003, the output of stainless steel in China was about 1.778 million tons, with 400 series stainless steel accounting for about 10%.

　　In recent years, the development and application of ferritic stainless steel has been paid more and more attention at home and abroad. The main reasons are as follows: 1. The serious shortage of Ni resources and the large fluctuation of Ni price have led to a sharp increase in the production cost of 300 series stainless steel, and the supply of raw materials is not guaranteed; 2. With the progress of production equipment and technology, ferritic stainless steel with excellent performance can be produced to replace some varieties of 300 series; 3. Stainless steel containing Ni is harmful to human body, such as allergic reaction to skin.

　　Ultra-pure ferritic stainless steel is mainly used in automobile manufacturing, kitchen equipment, household appliances, architectural decoration, chemical equipment and hardware products.

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SLH Pure Iron

SHANXI SHENG LONG HUA MAGNETIC MATERIAL CO.,LTD

Email: sales@slhpureiron.com

WhatsApp: +86 13410953850

WeChat: SLHPUREIRON

　　The preparation of nano-materials has always been a research hotspot and a research difficulty in the field of nano-technology. Although a variety of preparation methods of nano-materials have been developed, and great progress has been made in their preparation technology, due to the complex preparation process, high cost, small material size, internal holes and pollution, it is difficult to obtain integral metal materials with nano-particle size so far.As an important brand soul of the company, Armco Iron Has outstanding performance, through the market test, still has a strong development trend. https://www.slhpureiron.net

　　Therefore, how to prepare nano-materials with fewer defects by simpler and lower-cost means has become the pursuit goal in this field. In recent years, surface mechanical abrasion treatment (SMAT) has become a new method for preparing nano-materials. The nanocrystalline samples obtained by this method have a grain size within 100nm in a certain depth of the surface layer, and have a gradient structure of gradual transition between nano-,sub-micron and deformed grain layers, and are pollution-free and void-free.

　　Nanomaterials prepared by SMAT method have many potential application values because of the above characteristics, and have been applied in diffusion welding, surface alloying and nitriding. Self-nanocrystallization of various metals and alloys has been successfully achieved by SMAT method. Ultrasonic shot peening (USSP) is widely used in the preparation of nanomaterials by SMAT method, while Highenergyshotpeening,HESP (HESP) is seldom used.

　　Although some people have realized the surface self-nanocrystallization of pure iron by USSP, there is no report on the surface self-nanocrystallization of pure iron by HESP method. A severely plastic deformation layer with a certain thickness was obtained on the surface of industrial pure iron by HESP method.

　　By analyzing and characterizing the structure and properties of this severely plastic deformation layer, it was confirmed that a nanocrystalline layer with a certain thickness was obtained on the surface of industrial pure iron, and the surface of industrial pure iron was self-nanocrystallized.

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SLH Pure Iron

SHANXI SHENG LONG HUA MAGNETIC MATERIAL CO.,LTD

Email: sales@slhpureiron.com

WhatsApp: +86 13410953850

WeChat: SLHPUREIRON