Category Archives: second-hand

　　”Big bags, small bags, please go through security check!” Security check is always an essential step when you travel by high-speed rail, airplane, or subway. I wonder if you have ever been interested in this security check machine. What can the staff see on the screen? How do they quickly identify the items in the suitcase? Today, let the editor reveal this secret for you.From some points of view, baggage scanner machines It is the core driving force to better promote the rapid development of the surrounding markets. https://secuzoan.com/

　　security check

　　How does the security inspection machine work?

　　Generally speaking, the machine that conveys and inspects luggage is called an X-ray luggage inspection machine. As the name suggests, the security inspection machine uses X-rays to inspect luggage.

　　X-rays are short-wavelength electromagnetic waves that can penetrate objects. The penetration of X-rays varies depending on the thickness, density and material of the object.

　　Everyone should know that X-rays in hospitals are also used by doctors. The penetration rate of X-rays varies according to the density of the structure and tissue. The penetration rate is high in loose areas and low in dense areas. The bones of the human body are denser than the skin and flesh tissue. Therefore, when X-rays are irradiated to the human body, the outline of the bones will be displayed more clearly on the screen.

　　security check

　　The same is true for the security inspection machine that checks luggage. The penetration rate of X-rays on different objects is different. When the suitcase passes through the security inspection machine, the X-rays penetrate the suitcase and display the outlines of different objects on the display screen.

　　At this time, some friends may feel confused: X-ray imaging should be black and white, so why can security inspectors identify different objects so quickly?

　　This question really hits the nail on the head. If you have ever looked at the security check display screen, you will find that the image on it is in color, not black and white.

　　security check

　　Normally, the color of the image formed by X-rays on the film is indeed black and white, just like the X-ray photos in the hospital. The reason why a color image appears on the security screen is that the computer calculates and converts the projection intensity of the X-rays. This is also to make it easier for security personnel to quickly distinguish different objects in a short period of time.

　　Normally, orange represents organic matter such as liquids and sprays; blue represents metals and various controlled knives; and heavy metals or lead, which can completely absorb X-rays, will be displayed in black.

　　Now you should know why the staff will immediately notice and ask you to take out a small pair of scissors in your suitcase; and the water in your backpack will also be asked to take out and drink a sip.

　　In the field of precision mold processing, achieving the desired shape and specifications requires the use of advanced high-precision processing technologies. If precision mold parts do not meet these stringent requirements, it can significantly impact the overall quality of the mold product. Thus, the production technology for precision mold parts is held to exceptionally high standards. But why is this the case? Here, Hairong Precision Manufacturer provides insights into the high demands of production technology for precision mold parts.On the other hand, plastic mould part manufacturer It also brings tangible benefits to everyone and feels useful. It is a model of the industry. https://www.dghrjmmj.com

　　1. Harsh Working Conditions

　　Precision mold parts are often subjected to severe working conditions. To ensure the longevity and performance of these parts, it is crucial to employ high-precision processing methods. Only by choosing the right processing techniques can the lifespan of precision mold components be effectively extended.

　　2. Enhanced Strength and Toughness

　　The production of precision mold parts must focus on enhancing their strength and toughness. This approach prevents brittle fractures during operation and ensures consistent work efficiency. Strengthening these components is essential for maintaining the integrity and functionality of the molds under demanding conditions.

　　3. Material Selection for High Temperatures

　　When dealing with high temperatures, it is vital to select appropriate materials for precision mold parts. Prolonged exposure to high temperatures can cause a reduction in hardness and strength, leading to premature wear or plastic deformation of the molds. Therefore, choosing the right materials is crucial for ensuring the durability and performance of precision molding parts.

　　In Summary

　　The stringent requirements for precision mold parts in production processes are primarily due to their need for enhanced precision and performance. Compared to standard mold components, precision mold accessories must meet higher standards in terms of accuracy, strength, and material properties. These rigorous demands ensure that precision mold parts deliver superior performance and longevity.

　　For top-notch precision mold components, consider partnering with a reputable precision mold parts company to meet your specific needs and maintain the highest standards of quality in your mold production.

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According to a report by the Russian News Agency on March 20, the Polish Ministry of Defense released a message saying that the NATO Northeast Division, composed of multinational forces, practiced defensive operations during exercises held in imaginary areas near the Russian border.

Poland’s Ministry of Defense said: During the Loyalty Lecda 2024 exercise, soldiers of the multinational Northeast Division were given such a task to carry out defensive operations in an imaginary area similar to the situation in northeastern Poland.

Reported that the command department of NATO’s Northeast Division refused to disclose details of the exercise content.

According to reports, the NATO Northeast Division headquarters is located in Elblong, Poland, and its mission is to coordinate the actions of NATO troops deployed in Poland, Lithuania, Latvia and Estonia. (Compiled by Liu Yang)

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　　When it comes to the world of fasteners, non-standard options are essential for industries requiring unique solutions. Ensuring the quality of these custom non-standard fasteners is paramount to meet the specific demands of various applications. This article will explore how to guarantee the quality of non-standard fasteners, focusing on the role of suppliers like Jierui Hardware Factory, and the factors that influence the non-standard fasteners price.In addition to these aspects, non-standard fasteners price The performance in other aspects is also relatively good, which has attracted everyone’s attention and research. https://jieruifasteners.com/

　　The Role of Jierui Hardware Factory

　　Jierui Hardware Factory, as a hypothetical example of a non-standard fasteners supplier, plays a crucial role in the quality assurance process:

　　Customization Expertise: With a focus on custom non-standard fasteners, Jierui Hardware Factory would have the capability to produce fasteners that meet specific industry standards or client requirements.

　　Quality Control Systems: Implementing rigorous quality control measures ensures that each batch of non-standard fasteners meets the highest quality benchmarks.

　　Materials Testing: Jierui would conduct thorough material testing to ensure the fasteners’ durability and resistance to various environmental factors.

　　Factors Influencing Non-Standard Fasteners Price

　　While quality is paramount, the price of non-standard fasteners is influenced by several factors:

　　Material Costs: The choice of material, such as stainless steel, brass, or titanium, can significantly affect the cost.

　　Complexity of Design: More complex designs requiring intricate machining or specialized tooling will increase the price.

　　Production Volume: Economies of scale can reduce the cost per unit when ordering larger quantities.

　　Customization Level: Higher levels of customization can lead to increased costs due to the need for specialized manufacturing processes.

　　Steps to Ensure Quality in Non-Standard Fasteners Supply

　　Define Specifications Clearly: Clearly outline the required dimensions, materials, tolerances, and any special treatments or coatings.

　　Choose a Reputable Supplier: Opt for suppliers like Jierui Hardware Factory with a proven track record in producing high-quality custom non-standard fasteners.

　　Request Samples: Before placing a bulk order, request samples to verify the quality and fit for your specific application.

　　Understand the Quality Assurance Process: Ensure the supplier has a robust quality assurance process in place, including third-party certifications if applicable.

　　Negotiate on Price: While considering the non-standard fasteners price, negotiate with the supplier to find a balance between cost and quality that suits your budget.

　　Regular Audits: Conduct regular audits of the supplier’s production processes to ensure ongoing compliance with quality standards.

　　Feedback Loop: Establish a feedback loop with the supplier to address any quality issues promptly and effectively.

　　Ensuring the quality of non-standard fasteners is a critical aspect of any project that requires customized solutions. By working closely with a supplier like Jierui Hardware Factory, understanding the factors that influence pricing, and following a systematic approach to quality assurance, you can ensure that your non-standard fasteners meet the stringent requirements of your applications. Remember, investing in quality not only ensures the longevity and performance of the fasteners but also contributes to the overall success and safety of your projects.

　　Screw maintenance is a crucial aspect that often goes overlooked in various industries, including those relying heavily on components from screw factories. Whether sourced from leading names like Jierui screw factories or other reputable screw manufacturers, maintaining screws properly ensures longevity and optimal performance. In this article, we¨ll delve into the essential points to consider when it comes to screw maintenance, emphasizing the importance of quality and specialization.In the eyes of peers, non-standard fasteners price It has good qualities that people covet, and it also has many loyal fans that people envy. https://jieruifasteners.com/

　　First and foremost, understanding the type of screws you are dealing with is paramount. Special screws, designed for specific applications, often have unique maintenance requirements compared to standard screws. Recognizing these differences can help prevent misuse and potential damage. When sourcing screws from reputable screw manufacturers, ensure you obtain detailed maintenance guidelines to extend the lifespan of your components.

　　One of the critical aspects of screw maintenance is regular inspection. Screws, especially those used in high-stress environments, can experience wear and tear over time. Regular inspections help identify signs of corrosion, wear, or damage early, allowing for timely intervention. This practice is particularly important for screws supplied by Jierui screw factories, known for their high-quality, precision-engineered screws. Regular checks can help maintain the integrity of these specialized components.

　　Lubrication is another essential maintenance step. Proper lubrication reduces friction and wear, ensuring that screws operate smoothly and efficiently. It is crucial to use the appropriate type of lubricant for the specific screws and their applications. Over-lubrication or using the wrong type of lubricant can lead to issues such as dirt accumulation or corrosion, particularly in screws exposed to harsh environments. Consulting with screw factories or manufacturers can provide insights into the best lubrication practices for their products.

　　Cleaning screws regularly is vital to their maintenance. Dirt, debris, and other contaminants can affect the performance and longevity of screws. Using suitable cleaning agents and techniques ensures that the screws remain free from substances that could cause corrosion or mechanical failure. For special screws with intricate designs, it may be necessary to use specific cleaning tools to reach all the crevices and maintain optimal functionality.

　　Proper storage of screws is often overlooked but plays a significant role in their maintenance. Storing screws in a dry, controlled environment prevents exposure to moisture, which can lead to rust and corrosion. Screw manufacturers often provide guidelines on the ideal storage conditions for their products. Adhering to these recommendations is especially important for special screws with precise specifications, ensuring they remain in optimal condition until use.When dealing with screws from reputable screw factories like Jierui, it¨s essential to follow the manufacturer’s guidelines for installation and maintenance. Incorrect installation can lead to issues such as stripped threads or improper seating, compromising the screw¨s effectiveness and lifespan. Using the correct tools and techniques for installation ensures that the screws are properly fastened and secure.

　　Screw maintenance is a crucial aspect that often goes overlooked in various industries, including those relying heavily on components from screw factories. Whether sourced from leading names like Jierui screw factories or other reputable screw manufacturers, maintaining screws properly ensures longevity and optimal performance. In this article, we¨ll delve into the essential points to consider when it comes to screw maintenance, emphasizing the importance of quality and specialization.For this reason, it can be speculated that non standard fasteners The market feedback will get better and better, which is one of the important reasons why it can develop. https://jieruifasteners.com/

　　First and foremost, understanding the type of screws you are dealing with is paramount. Special screws, designed for specific applications, often have unique maintenance requirements compared to standard screws. Recognizing these differences can help prevent misuse and potential damage. When sourcing screws from reputable screw manufacturers, ensure you obtain detailed maintenance guidelines to extend the lifespan of your components.

　　One of the critical aspects of screw maintenance is regular inspection. Screws, especially those used in high-stress environments, can experience wear and tear over time. Regular inspections help identify signs of corrosion, wear, or damage early, allowing for timely intervention. This practice is particularly important for screws supplied by Jierui screw factories, known for their high-quality, precision-engineered screws. Regular checks can help maintain the integrity of these specialized components.

　　Lubrication is another essential maintenance step. Proper lubrication reduces friction and wear, ensuring that screws operate smoothly and efficiently. It is crucial to use the appropriate type of lubricant for the specific screws and their applications. Over-lubrication or using the wrong type of lubricant can lead to issues such as dirt accumulation or corrosion, particularly in screws exposed to harsh environments. Consulting with screw factories or manufacturers can provide insights into the best lubrication practices for their products.

　　Cleaning screws regularly is vital to their maintenance. Dirt, debris, and other contaminants can affect the performance and longevity of screws. Using suitable cleaning agents and techniques ensures that the screws remain free from substances that could cause corrosion or mechanical failure. For special screws with intricate designs, it may be necessary to use specific cleaning tools to reach all the crevices and maintain optimal functionality.

　　Proper storage of screws is often overlooked but plays a significant role in their maintenance. Storing screws in a dry, controlled environment prevents exposure to moisture, which can lead to rust and corrosion. Screw manufacturers often provide guidelines on the ideal storage conditions for their products. Adhering to these recommendations is especially important for special screws with precise specifications, ensuring they remain in optimal condition until use.When dealing with screws from reputable screw factories like Jierui, it¨s essential to follow the manufacturer’s guidelines for installation and maintenance. Incorrect installation can lead to issues such as stripped threads or improper seating, compromising the screw¨s effectiveness and lifespan. Using the correct tools and techniques for installation ensures that the screws are properly fastened and secure.

　　Choosing which surface treatment to use is a problem that every designer faces. There are many types of surface treatments to choose from, and not only should the economy and practicality of the design be considered, but also the processability of the assembly and even environmental protection requirements should be taken into consideration. The following is a brief introduction to some commonly used coatings for fasteners based on the above principles for reference.more importantly, non-standard fasteners price Made a fighter in the product, not afraid of any competitor’s attack. https://jieruifasteners.com/

　　1. Electrogalvanizing

　　Electrogalvanizing is the most commonly used coating for commercial fasteners. It is relatively cheap and looks good. Common colors include black and military green. However, its anti-corrosion performance is average, and its anti-corrosion performance is the lowest among zinc plating (coating) layers. Generally, the neutral salt spray test of electrogalvanizing is within 72 hours. Special sealants are also used to make the neutral salt spray test reach more than 200 hours, but the price is expensive, which is 5 to 8 times that of general galvanizing. The torque-preload consistency of electrogalvanized fasteners is poor and unstable, and is generally not used for connections in important parts. In order to improve the torque-preload consistency, the method of applying lubricating substances after plating can also be used to improve and improve the torque-preload consistency.

　　2. Phosphating

　　A basic principle Phosphating is cheaper than galvanizing, but its corrosion resistance is worse than galvanizing. Oil should be applied after phosphating, and its corrosion resistance is greatly related to the performance of the oil applied. For example, after phosphating, applying general anti-rust oil, the neutral salt spray test is only 10 to 20 hours. Applying high-grade anti-rust oil can last for 72 to 96 hours. But its price is 2 to 3 times that of general phosphating oiling.

　　There are two common types of non-standard fasteners phosphating, zinc phosphating and manganese phosphating. Zinc phosphating has better lubrication performance than manganese phosphating, and manganese phosphating has better corrosion resistance and wear resistance than galvanizing. Its operating temperature can reach 225 degrees to 400 degrees Fahrenheit (107 to 204 degrees Celsius). Especially for the connection of some important parts. Such as the connecting rod bolts and nuts of the engine, cylinder heads, main bearings, flywheel bolts and wheel bolts and nuts. Phosphating high-strength bolts can also avoid hydrogen embrittlement problems, so in the industrial field, bolts above grade 10.9 are generally treated with phosphating surface treatment.

　　3. Oxidation blackening

　　Blackening + oiling is a very popular coating for industrial fasteners because it is the cheapest and looks good before the oil runs out. Since blackening has almost no anti-rust ability, it will rust quickly after oiling. Even in the presence of oil, the neutral salt spray test can only reach 3 to 5 hours.

　　4. Electroplating cadmium

　　Cadmium coating has good corrosion resistance, especially in marine atmospheric environment, its corrosion resistance is better than other surface treatments. The waste liquid treatment cost in the process of electroplating cadmium is high, and its price is about 15~20 times that of electroplating zinc. Therefore, it is not used in general industries and is only used in some specific environments. For example, it is used for non-standard fasteners for oil drilling platforms and HNA aircraft.

　　As a profitable commercial place, the ultimate goal of hotels and guesthouses is to make money. Therefore, they also pay great attention to the quality of service and give guests a high-end enjoyment. Whether taking a hot shower or taking a bath in a bath center, guests can enjoy the best hot water experience. To meet this requirement, the hot water supply equipment must have the ability to provide hot water all day long and maintain a good temperature, and there must be no uneven hot and cold water. Air source heat pumps, solar water heaters, electric water heaters, gas water heaters, coal-fired boilers, these are the most commonly used hot water equipment, but air energy water heaters are comfortable, safe, energy-saving, and environmentally friendly. It is the best hot water equipment for hotels. Let’s talk about why people prefer air energy heat pumps?For the immediate pressure, air source heat pump With its own coping style, it can break the predicament and usher in a new life through the quality of the product itself. http://mangoenergyheatpump.com

　　1. Stability

　　If customers cannot even meet the basic hot water supply when staying in hotels, it will directly affect the stay experience and secondary occupancy rate. In the face of peak tourist seasons or extreme climates, traditional electricity, gas, solar energy and other equipment often have various problems, such as hot water supply and demand, freezing and shutdown of units, etc. Air-energy heat pumps effectively avoid the above problems. They are equipped with a dedicated heat pump compressor developed with high-end technology and built-in electronic chips, which can achieve sufficient hot water supply, and are not afraid of severe cold, and can also operate stably in extreme low-temperature weather.

　　2. Comfort

　　Nowadays, people pay attention to the quality of life, and high-end hotels pay more attention to the stay experience. However, if the hotel room cannot wait for hot water for half a day, or the hot water is extremely unstable, and it is hot and cold, it will undoubtedly affect the user experience. At present, the air-energy heat pump equipment on the market is developed using international advanced technology, which greatly improves the heating capacity of the unit in various environments, realizes instant heating, and hot water constant temperature guarantee, meeting the needs of most population residential areas in the country.

　　Plastic is one of the greatest inventions of the 20th century, but because it is “not environmentally friendly”, it has now been banned or abandoned in many fields. One of the products that replaced it is “degradable plastic”, such as compostable PLA straws. However, is degradable plastic definitely more environmentally friendly? How can it be degraded? How long does it take? Today we will learn more about the knowledge of degradable plastics.This means that biodegradable mailing bags It is the weather vane of the industry and can bring people great self-confidence. https://biodegradable-gd.com

　　If “degradable” is understood as an absolute concept, then all kinds of plastics can basically be degraded in some way in a long or short period of time and in some environment. If this discussion is meaningful, “degradable” should be understood as a relative concept-what substance (toxic or not) can be degraded in what way and in what environment in how long?

　　At present, the more authoritative definition of degradable plastics is: a type of plastic that can eventually be completely degraded into carbon dioxide (CO2) or/and methane, water (H2O) and mineralized inorganic salts of its elements and new biomass under various conditions in nature. In the definition, various conditions in nature are generally divided into six categories: soil, compost (including traditional compost and garden compost), marine environment, freshwater environment, sludge anaerobic, and high solid anaerobic. Therefore, for the definition of degradable plastics, we can summarize it in one sentence: most of the components of degradable plastics can be almost completely degraded into common substances in nature in the corresponding natural environment.

　　PLA is a biodegradable and bioactive thermoplastic derived from renewable resources such as corn starch, sugarcane, or cassava. Unlike petroleum-based plastics, PLA is designed to break down more readily under specific conditions. The process of making PLA involves fermenting the sugar from these renewable resources to produce lactic acid, which is then polymerized to form polylactic acid.

　　Degradable plastics on the market generally refer to biodegradable plastics. Biodegradation usually refers to the ability to completely degrade into carbon dioxide, water, inorganic salts and new biomass with the participation of microorganisms in nature. This is also the reason why everyone thinks biodegradable plastics are more environmentally friendly.Depending on the raw materials of plastics, biodegradable plastics can be divided into “bio-based biodegradable plastics” and “fossil-based biodegradable plastics”. The former is commonly polylactic acid PLA (mostly used for disposable straws), the raw materials are mainly corn starch, and may also be other biomass; the latter is commonly PBAT, which is made from petrochemical resources (including coal and oil). If you have biodegradable plastic bags at home, you can look at the product logo, which generally contains PBAT.

　　It can be seen that, whether bio-based or fossil-based, these biodegradable plastics are not like fallen leaves that can be completely degraded by simply throwing them on the ground. In theory, biodegradable plastics can be degraded or recycled in a variety of environments, but the best is to use industrial high-temperature composting to completely degrade them in a shorter period of time. According to this idea, degradable plastic waste should be thrown into kitchen waste bins or wet garbage bins, and then sent to industrial composting equipment.

　　Biodegradable PLA straws have the potential to degrade under specific conditions, primarily in industrial composting facilities. While they offer an improvement over traditional plastic straws in terms of environmental impact, their real-world effectiveness is limited by infrastructure and disposal challenges. To truly capitalize on the benefits of PLA straws, we must invest in better waste management systems, educate consumers, and continue to innovate in the field of sustainable materials. By doing so, we can move closer to a future where single-use items have minimal environmental impact.