[China Aluminum Network] The United States has invented and safely used aluminum alloy cable technology and products for nearly half a century. Two American companies brought technology and products to China in 2006 and 2007 respectively, creating and setting off aluminum in China. Alloy cable business and boom. Advanced aluminum alloy cable technology and products have gradually changed the people's awareness of the cable industry and traditional cables, and opened up the vision of the development of the cable industry. The advanced conductor aluminum alloy technology solves the defects and deficiencies of aluminum as a cable conductor, allowing Chinese people to look forward to having a new type of conductor material to replace the resource-deficient copper conductor material and see the hope and prospect of realization. The national policy of "copper-based copper" has been established in the 1950s and 1960s. With the advancement of technology, it has become possible. The development of conductor material technology has injected new vitality and development opportunities for the Chinese cable industry. It can be equipped with a scrolling display that displays 300-500 words of display content. It can also be equipped with intelligent infrared probe anti-collision device, which can automatically return to work when people or foreign objects are 20-30CM, thus ensuring the safety of vehicles and pedestrians.It can automatically open and close when automatic clutch is cut off. Manually open and close when manual clutch is cut off. The control system has control panel, push button switch, and other requirements. Equipped with wireless remote control.The door body is made of high-quality stainless steel and aluminum alloy profiles, and is hinged by the parallelogram principle. The drive is driven by special motor, worm and worm gear deceleration, and has automatic clutch or manual clutch. Factory Sliding Retractable Gate,Aluminum Alloy School Sliding Gate,Automatic Electric Single Double Gate,Store Retractable Gate Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.highspeedshutterdoor.com
Nowadays, aluminum alloy cables are well known in the industry, and all types of users gradually recognize and actively accept this late technology and products. Various kinds of aluminum alloy cables on the market are advertised, concepts, and expressions are endless. There is a wide variety of products. There is no way to distinguish between genuine and fake aluminum alloy cable products and technologies. Even aluminum alloy cable technology has different definitions and chaos. But what exactly is an aluminum alloy cable? How does the United States safely and maturely apply aluminum alloy cable technology and products for nearly half a century? And so on, the author, as an industry insider involved in the aluminum alloy cable industry earlier, has made an inventory based on his understanding and understanding of various chaos in the aluminum alloy cable industry for many years.
Misleading propaganda 1: Companies without alloy formulations, continuous casting and rolling production equipment and processes can also produce qualified aluminum alloy cables. Facts: High quality aluminum alloy conductor rods are the decisive factor in the electrical and mechanical properties of aluminum alloy cables. Do not have high-quality aluminum alloy rods, no matter how the next process of drawing, stranding, cabling, armoring, etc. can not change the basic quality of the conductor. Aluminum alloy cable manufacturers must have an alloy formula that conforms to the production of AA8000 series conductor aluminum alloys, with conductor aluminum alloy rod melting, continuous casting and rolling production lines. This means that you can produce conductor aluminum alloy materials. If you do not have such basic capabilities, where does the rod material come from? The quality of the bar is not controllable at all. How can a qualified aluminum alloy cable product be produced? This kind of company's products are really worrying.
Misleading propaganda 2: Aluminum alloy cable is better than aluminum cable, even if the quality is a bit bad, it does not matter the fact: aluminum alloy that does not meet the requirements of aluminum alloy cable national industry standard "0.6-1kV rated voltage aluminum alloy conductor XLPE insulated power cable" Cables are unqualified products and are truly inferior products. Perhaps many users are not aware that the unqualified aluminum alloy cable is actually inferior to the aluminum cable because the base material of the conductor aluminum alloy is aluminum. The conductor aluminum alloy is based on the core technology formula and process to add other metal elements in aluminum by alloying and smelting. New materials produced by casting and rolling, qualified conductor aluminum alloy materials can be restored to the aluminum level after processing, and the physical and mechanical properties are much better than aluminum. The so-called aluminum alloys that are not qualified have no core technology, mature production technology and professional production equipment. Because of the reasons of alloy formulation, smelting, and processing technology, the aluminum alloy produced cannot recover its electrical properties to the level of aluminum. , Mechanical properties have not been effectively improved and improved, and overall performance is not as good as aluminum. Therefore, the use of substandard aluminum alloy cables is not as good as the use of aluminum cables. After all, aluminum cables are more economical and safer than unqualified aluminum alloy cables.
Misleading propaganda 3: The principle of aluminum alloy cable instead of copper cable: One size is better. Facts Truth: The aluminum alloy for conductor is a new type of conductor material made of pure aluminum as the base material and alloyed by melting and casting. High-quality aluminum alloys have the same electrical properties as pure aluminum and have better mechanical properties than copper. When the cross-section of the aluminum alloy conductor is 1.5 times that of the copper conductor, it achieves the same electrical properties as the copper conductor (current carrying capacity, voltage drop, etc.). The rules for scientific and safety replacement of copper cables for aluminum alloy cables are less than 50mm (including 50) copper cables. For aluminum alloy cables larger than one size and 70mm or more (including 70) copper cables, aluminum alloy cables must be replaced by two specifications. In order to ensure the same electrical performance as the copper cable, it is safe to use. Recently, regardless of the size of copper cables in the aluminum alloy cable market in China, the irresponsible and unscientific practices and claims that aluminum alloy cables only use the replacement specifications of large files, in fact, these companies think that aluminum alloy cables have just become popular in China. The user does not know much about the performance of this product. He only talks about the cable's current carrying capacity, not the voltage drop, the voltage loss, and the user's misbehavior. From the cost point of view, the cost of stealing a file is reduced by an average of 26%, but the loss of the cable after stealing the file will increase the voltage loss by 17-28%. This kind of bad behavior directly harms the interests of users and will cause security risks.
Misleading propaganda 4: claiming to be the maker or even creator of national standards for aluminum alloy cables. Facts: The mature aluminum alloy cables in the United States are based on the standard ASTMS800-05 (2011) “8000 Series Aluminum Alloy Wire Electrical Purposes—Annealed and Intermediate Tempers†and UL44-2010 "Thermoset-insulatedwiresandcables" production, China's cable industry in charge of the National Energy Administration intends to release the "rated voltage 0.6-1kV aluminum alloy conductor XLPE insulated power cable" and "aluminum conductor for cable conductors" two Aluminum alloy cable related standards fully take into account the mature aluminum alloy cable technology in the United States, so when setting standards, the main technical indicators of the above foreign standards are mainly formulated (Note: ASTM is the abbreviation of American Materials and Testing Association). "The rated voltage of 0.6-1kV aluminum alloy conductor XLPE insulated power cable" and "aluminum alloy conductor for cable conductor" are the national standards of the real aluminum alloy cable industry. As for the newly issued GB/T29920-2013 “Rare Earth Ferrite Alloy Rod for Electricians†standard, it is mainly aimed at the production and sales of rare earth high-speed iron and aluminum alloy rod materials, that is to say when you want to produce and sell rare-earth high-iron alloy rod materials. Standards, production and manufacture of aluminum alloy wires and aluminum alloy cables for cable conductors complying with the technical requirements of AA8000 series in accordance with the "0.6-1kV Rated Voltage Aluminum Alloy Conductor Crosslinked Polyethylene Insulated Power Cable" and "Aluminum Conductor for Cable Conductor" Standards There is a difference. In addition, the newly published "Electric Round Aluminium Rod" national standard (GB/T 3954-2014), GB/T 3954-2014 is based on the 2008 version, and actively adopts the United States ASTM, EU EN standards, British BS, International Electrotechnical Organization The IEC standard has improved the requirements, test methods, and inspection rules for electric round aluminum rods, and the related contents of the alloy electric round aluminum rods with brand numbers 8030 and 8A07 have been added. This is a standard for electric round aluminum rod materials. For manufacturers who do not have their own conductor aluminum alloy material production capacity, due to the need to purchase similar rare earth high-speed iron alloy rod material and 8030 aluminum alloy rod material, the "rare earth high-iron alloy rod" and the new "electrical round aluminum rod" standard These manufacturers have a correlation. In fact, no matter which type of aluminum alloy rod material is used, the conductor aluminum alloy wire and aluminum alloy cable produced must satisfy the “rated voltage 0.6-1kV aluminum alloy conductor XLPE insulated power cable†and “aluminum alloy wire for cable conductorsâ€. "The requirements of these two standards. The quality of aluminum alloy cable products is mainly assessed by the "rated voltage 0.6-1kV aluminum alloy conductor XLPE insulated power cable", so participate in the formulation of the "rated voltage 0.6-1kV aluminum alloy conductor XLPE insulated power cable" standard It is the standard maker of aluminum alloy cable products.
Misleading Propaganda 5: Qualified aluminum alloy cables are the type (or commissioned) inspection report. Truth: It is not enough to have a type (or commission) inspection report, but there must be three copies issued by the Shanghai Testing Center of authoritative testing organizations. report. 1)According to AA8000 series conductor aluminum alloy rod chemical composition test report; 2), Shanghai Cable Research Institute issued according to the national industrial standard "rated voltage 0.6-1kV aluminum alloy conductor XLPE insulated power cable" issued for testing basis Conductor aluminum alloy rod 100 hour compressive creep test report, according to statistics, most companies do not have this report, even if this report, did not follow the standard requirements to achieve 100 hours of testing; 3), machinery industry, electrical materials and 1000 times of thermal cycle inspection report of aluminum alloy cable and terminal assembly issued by the special cable product quality supervision and inspection center. These three reports are proof that qualified aluminum alloy cables are authoritative and important test reports.
Misleading Propaganda 6: There are websites and websites that are beautiful are the formal aluminum alloy cable manufacturers. Facts: There are a variety of online promotions. The so-called company and internet companies of various brands are very embarrassed. how is it? Fluctuations are big, saying that there are test reports and everything can be promised, but the overwhelming majority of products are fake and inferior products. Here, to remind users must be carefully identified, first to verify the qualifications of enterprises, test reports, in particular, the above three basic inspection reports must be available, the website of the inspection agency to verify the authenticity of the report, and must make an inspection of the factory, on-site inspection Requires that these false companies and fake products have nowhere to be seen. This kind of company is generally difficult to meet the requirements, this kind of identification is necessary, do not just look at the price, otherwise it will inevitably be deceived, endless trouble.
Misleading propaganda 7: The promotion and application of aluminum alloy cables must go through the facts of the access of the State Grid Corporation of China: Recently, the State Grid Corporation of China officially responded to the “Proposal for Expanding the Application of Aluminum Alloy Cables in the Electric Power Industry†of the National People's Congress, clearly Said: Wire and cable "Al to replace copper" has important strategic significance. To further promote the application of aluminum alloy cables in power systems, it has been incorporated into the 2014 version of the State Grid Corporation's new technology catalog. This is really good news for the aluminum alloy cable industry. Since then, the aluminum alloy cable can get rid of those unnecessary disputes, enters the power system market in a righteous manner and legitimately and legally. After all, the national grid is a large user of cables. The development of aluminum alloy cables is a trend. The introduction of aluminum alloy cables into the State Grid's new technology catalog is an opportunity for the aluminum alloy cable industry. However, it is not known at the moment when related companies can truly benefit. It is understood that the National Grid has already applied 10KV, 1KV and other voltage grade aluminum alloy cables. In the future, the State Grid will continue to pay attention to the technical development of 10-35KV aluminum alloy cables, especially after the issuance of the national standard of aluminum alloy cable below 35KV. , will carry out related applications. That is to say, related applications must also be completed with relevant standards, and there is no mature experience in the technology and application of 10-35K aluminum alloy cables. In addition to American-funded companies, the domestic 1KV aluminum alloy cable technology is still in technology, Product maturity stage. In fact, the State Grid is also a company, but it is only a large cable user. Its large demand for cables is high-voltage power transmission. The amount of medium-voltage power transmission and distribution cables is certainly considerable, but because of various reasons, the probability of using copper cables is even greater. The national grid is really used for low-voltage power distribution cables mainly in the new community supporting fees and some industry expansion projects. At present, the State Grid project contracted for the new community supporting fee project, because of its corporate management requirements, does require access, but the expansion of the project selected aluminum alloy cable, there is no national grid access problems, aluminum alloy cable into the national grid is the real opportunity for the new community supporting Fee engineering. With less porridge, the access to the aluminum alloy cable from the State Grid is only good for companies that have genuine product quality.
Misleading publicity 8: Aluminum alloy cable connection using copper and aluminum transition terminals is safe and reliable fact: As we all know, the more important in power installation and power transmission is the quality of cable products, connection terminals, terminal connection quality three links. The connection terminal is the key to the safety and non-hidden application of aluminum alloy cables. The aluminum alloy cable entered China only six or seven years ago, because there was no aluminum alloy cable product in the Chinese market before, so there is no special terminal product that is specially used to connect the aluminum alloy cable with the performance of the connected aluminum alloy cable. At present, when aluminum alloy cables are used in China, due to the inability of the market to provide special aluminum alloy copper connection terminals that are consistent with the performance of the connected aluminum alloy cables, the copper and aluminum transition terminals originally used for connecting aluminum cables are incorrectly selected and some manufacturers The so-called micro-alloy terminals introduced only to improve the electrical conductivity of the terminals are replaced. This is an extremely unscientific application program and it is a wrong understanding. Because the aluminum alloy cable was invented to solve the shortcomings and defects of the pure aluminum cable, especially its poor resistance to creep, the copper and aluminum transition terminals originally used for aluminum cables were also used in the connection, and the aluminum part of the terminal was also used. All the defects of pure aluminum exist. The existence of the so-called high-conductivity micro-alloys in which the performance of aluminum and aluminum alloy cables is inconsistent throughout the entire connection scheme makes it impossible for the advantages and values ​​of aluminum alloy cables to be exerted and embodied. This has the direct use of aluminum cables. What is the difference? This connection scheme is extremely unreasonable, erroneous, and has hidden security risks. Aluminum alloy cable in the application of the error is the industry can not avoid the application of technical issues, which relates to the safety, no hidden dangers, the correct application of aluminum alloy cable, aluminum cable really return to its original advantages and value.
Misleading propaganda 9: Declaring the so-called high-conductivity aluminum alloy cable Fact: Some companies, in order to achieve certain propaganda purposes, said that the conductivity of aluminum alloy cables exceeds common sense, and actually comes at the cost of losing cable's other performance requirements. To meet the publicity figures, in accordance with national standards assessment, such enterprise products can be judged as substandard products. These enterprises claim that their aluminum alloys are aluminum alloys with high conductivity. After inspection, inspection results of these companies' inspection reports are basically self-determined corporate standards. For example, an enterprise sets the corporate standard to set the tensile strength index to 59-120 Mpa (GB 98. -159Mpa), the actual tensile strength test result is 86Mpa, and the conductivity is 62.5% (known as higher in the world). In fact, reducing the tensile strength is conducive to improving the conductivity, and the qualified conductor aluminum alloy is to meet the requirements of chemical composition, elongation, tensile strength, electrical conductivity, and compressive creep properties at the same time, if the tensile strength is not Qualified, what is the significance of high conductivity?
Misleading propaganda 10: exaggerating the so-called rare earth high-speed rail aluminum alloy cable Facts: Academician Huang Chongji of Shanghai Cable Research Institute researched and developed rare-earth aluminum alloy in the 1980s and obtained national invention patents. Some companies have learned from academician Huang’s scientific research results, that is, they are insufficient in purity. A trace rare earth was added to the aluminum substrate to improve the mechanical properties of the aluminum material and a high-iron rare earth aluminum alloy cable was developed. The research and development team of the Shanghai Cable Research Institute clearly stated in the 2013 cable industry academic annual meeting that “the purity of aluminum is 99.7%, and the silicon content is within 0.04%. It is not necessary to add rare earth as a conductive aluminum alloy.†Scientific conclusions. Therefore, it is meaningless to add rare earth to qualified aluminum. If a poor aluminum material such as purity is used as the base material for the conductor aluminum alloy, it can only add rare earth to make up for the lack of material properties. In addition, the national standard for aluminum alloys with qualified conductors clearly specifies that the iron content should not exceed 1%. Therefore, the statement of high iron rare earth aluminum can only be understood as the concept of artificial speculation. In the national industry standard “Aluminum conductors for cable conductorsâ€, the statement of rare earth high-speed iron alloys has been explicitly denied.
Misleading propaganda 11: Thousands of miles of land, thousands of acres of construction, ten billion production capacity of aluminum alloy cable manufacturers facts: Some companies claim that they are Sino-US joint ventures, in fact they are downright township enterprises, business licenses are also clearly written above Chu. Some companies advertise that they have built factories across the country and have a large number of production bases. The annual production capacity reaches tens of billions of dollars. This even exceeds some of the oldest copper cable leading companies in China, but actual annual sales are less than the fraction of publicity. People wonder whether these enterprises are undertaking enclosure movements, seeking capital operation, and obtaining speculative behaviors with short-term interests? Therefore, we must be cautious when choosing this kind of enterprise product.
Misleading propaganda 12: With advanced equipment, aluminum alloy cables can be produced. Facts: Some companies claim to have introduced advanced foreign technology equipment. When they actually introduced advanced equipment, they did not introduce the equipment technology and technology at the same time, making the equipment advanced. Can not be played, what is more, obviously domestic equipment, but it must be counterfeit imported equipment. Therefore, simply propagating advanced production equipment is not enough. Even with advanced production technology and equipment, it is limited by personnel, technology, and experience. Good equipment may not be able to be used more effectively. Due to the systematicness and complexity of the production line, it is difficult for manufacturers to guarantee the stability and smoothness of the imported equipment in the production of aluminum alloy cables. There is no mature production process and experience, and it is difficult to ensure product quality. Those who have engaged in production know that the production line is a systematic project and has no experience. Even if it is repeatedly tested, it may not be able to reach an ideal state. Each node is produced in an interlocking manner. Will affect the quality of the product.
Misleading propaganda 13: Aluminum alloy cables have no technical content, and copper manufacturers will also produce facts: Many domestic manufacturers are adding aluminum alloy cable products based on copper cables to understand and produce copper cables with experience in producing copper cables. The transformation of the equipment to adapt to the production of aluminum alloy cables is in fact yet to truly understand the particularity and requirements of the production of aluminum alloy cables in terms of technology, process, and equipment. Aluminum alloy cables first require the patented technology of aluminum alloy formulations, followed by stringent requirements in the continuous casting and rolling production process, conductor compaction technology, cable annealing process, insulation technology, and skid-mounted technology. It is not like a few factories in many copper cable companies, investing millions, recruiting dozens of workers, recycling waste copper and old plastics to produce wire and cable. Without a certain amount of technology and strength, it is difficult to produce qualified aluminum alloy cables.
Concluding remarks: The appearance of a new technology and new product will usually cause industry attention at the outset. Rational people will learn, digest, and turn into their own technology to create competitiveness and development opportunities. Irrational, non-comprehensive, and opportunistic people use the emergence of new things, profit from them, and then lead to disorderly market competition, damage to industry development and user interests. The cable products are related to life and property safety, are related to social stability, and prevent the proliferation of shoddy and inferior products. They are the common responsibility of the cable industry and the society. Doing a good job of products is the proper part.