Category Archives: economy

　　Every item in life needs careful maintenance, and your pillow is no exception. Let’s take a look at the maintenance methods of memory foam pillows with Xiao Shi!After that, knee pillow memory foam Not afraid of the future, dare to fight and fight, and won applause again and again in the market. https://tainengjikang.com/

　　How to maintain a memory foam pillow?

　　1. Pillowcase

　　Memory pillows usually have outer and inner covers. The inner cover is mostly made of pure cotton fabric, while the outer cover is generally made of velvet fabric. The inner cover can be machine washed or hand washed, and can be dried after being wrung out. It is generally recommended to hand wash the velvet outer cover, and do not wring it too hard when drying. When installing the pillow core, pay attention to the direction of the big and small heads. Most memory pillows are now B-shaped, which cannot be cut open and installed upside down.

　　2. Pillow Core

　　(1) Memory pillows are generally made of environmentally friendly polyurethane. This material will turn yellow if left in the sun for a long time, so the pillow core should not be exposed to the sun. Just take it out frequently to ventilate and dry naturally.

　　(2) Another thing to pay attention to when maintaining the pillow core is that you should not press it with force for a long time. When not in use, leave it in its natural state and do not place it under heavy objects for a long time. This may cause the memory foam to deform, making you uncomfortable when sleeping.

　　(3) The pillow core cannot be washed. This type of memory foam has a very unique structure. If moisture enters, it will be difficult to clean out, which will also reduce the quality of sleep. Generally, it is used with a pillowcase and an inner cover. If you accidentally sweat, take out the pillow core and let it dry naturally.

　　Finally, if the newly purchased memory foam pillow has a slight odor, it is normal. Just let it air dry for 3-5 days (if the ventilation is good, the odor can be removed in 2 days), and the odor will be completely gone, and you can use it with confidence.

　　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.In order to facilitate users to have a better experience, Non standard hardware factory Many attempts have been made to upgrade the products, and the results are also very good, and the market performance tends to be in a good state. 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.

　　When selecting a straight umbrella, the handle might not be the first feature that comes to mind, but it plays a crucial role in both functionality and style. Among various handle materials, resin has emerged as a popular choice due to its numerous advantages. Here¨s why opting for a resin handle for your straight umbrella is a smart decision, highlighting its benefits and key features.According to related reports, straight umbrella To a large extent, it leads the changes of market conditions. https://topumbrella.cc/

　　resin handle straight umbrella

　　1. Durability and Strength

　　Benefit: Resin handles are known for their durability and strength, making them a reliable choice for everyday use. Unlike wood or plastic, resin is engineered to withstand harsh weather conditions, including rain, wind, and sun exposure.

　　Feature: Resin handles are often reinforced with additives to enhance their structural integrity. This makes them less likely to crack or break under stress, ensuring a long-lasting and dependable umbrella handle.

　　resin handle straight umbrella

　　2. Lightweight and Comfortable

　　Benefit: Resin is a lightweight material, which contributes to a more comfortable user experience. A lightweight handle reduces strain on your wrist and hand, making it easier to carry your umbrella for extended periods.

　　Feature: Despite its lightweight nature, resin does not compromise on strength. It provides a balanced feel, ensuring that the umbrella remains easy to handle and maneuver.

　　3. Weather Resistance

　　Benefit: Resin handles excel in weather resistance, which is crucial for umbrellas exposed to the elements. They are resistant to moisture, UV rays, and temperature fluctuations, maintaining their appearance and functionality over time.

　　Feature: The weather-resistant properties of resin prevent issues like warping, fading, or deterioration, ensuring that the handle remains in excellent condition regardless of the weather.

　　4. Aesthetic Appeal

　　Benefit: Resin can be molded into various shapes and finishes, allowing for a wide range of design possibilities. Whether you prefer a sleek, modern look or a classic, elegant design, resin handles can be crafted to match your style preferences.

　　Feature: You can finish resin handles with different textures, colors, and patterns, offering a customizable aesthetic that complements the overall design of your umbrella.

　　5. Ease of Maintenance

　　Benefit: Maintaining a resin handle is straightforward and hassle-free. Unlike wood, which may require regular polishing or sealing, resin handles are easy to clean and do not need special treatments.

　　Feature: To clean a resin handle, simply wipe it with a damp cloth. This ease of maintenance ensures that your umbrella remains looking new with minimal effort.

　　In today’s fast-paced technological landscape, the demand for reliable, durable, and efficient user interfaces is higher than ever. Membrane switches, known for their versatility and compact design, play a crucial role in a wide range of applications, from consumer electronics to industrial machinery. When it comes to sourcing high-quality membrane switches, Singway stands out as a leader in the industry. Here’s why Singway should be your go-to manufacturer for membrane switches.In the past ten years, touch panel Defeated many competitors, courageously advanced in the struggle, and polished many good products for customers. https://singway-touch.com/

　　singway membrane switches

　　1. Unmatched Quality and Reliability

　　At Singway, quality is paramount. Each membrane switch undergoes rigorous testing and quality control to ensure it meets the highest standards of performance and durability. Singway’s commitment to quality means that every switch is built to last, providing reliable operation even in the most demanding environments. This reliability ensures that your products maintain their functionality and performance over time, reducing the need for frequent replacements and repairs.

　　2. Advanced Manufacturing Techniques

　　Singway employs advanced manufacturing techniques and state-of-the-art equipment to produce membrane switches that are both precise and consistent. By leveraging the latest technology, Singway can achieve intricate designs and complex configurations, ensuring that each switch meets the specific requirements of your application. This precision manufacturing results in high-performance switches with excellent tactile feedback and responsiveness.

　　3. Customization and Flexibility

　　One of Singway’s key strengths is its ability to offer customized solutions tailored to your unique needs. Whether you require specific dimensions, unique graphics, or specialized functionalities, Singway can design and manufacture membrane switches that align perfectly with your specifications. This flexibility allows you to create products that stand out in the market and meet the exact demands of your customers.

　　4. Wide Range of Applications

　　Singway’s membrane switches are designed to cater to a diverse range of applications, including medical devices, automotive controls, consumer electronics, and industrial equipment. This versatility ensures that no matter your industry, Singway has the expertise and capability to provide the ideal membrane switch solution. Their extensive experience across various sectors guarantees that you receive switches that are perfectly suited to your application¨s specific requirements.

　　5. Excellent Customer Support

　　Singway prides itself on providing exceptional customer support throughout the entire manufacturing process. From initial consultation and design to production and delivery, Singway’s team of experts is dedicated to ensuring that your experience is seamless and satisfactory. Their proactive approach to customer service means that any issues or concerns are addressed promptly, ensuring that your project stays on track and within budget.

　　6. Cost-Effective Solutions

　　Despite offering top-notch quality and advanced features, Singway remains committed to providing cost-effective solutions. Their efficient manufacturing processes and economies of scale enable them to offer competitive pricing without compromising on quality. This affordability makes Singway an attractive partner for businesses looking to balance high performance with budget considerations.

　　7. Sustainable and Eco-Friendly Practices

　　Singway is dedicated to sustainable manufacturing practices and minimizing its environmental impact. They use eco-friendly materials and processes to produce membrane switches, ensuring that their products are safe for both users and the environment. By choosing Singway, you not only get high-quality switches but also contribute to a more sustainable future.

　　8. Innovative Design Capabilities

　　Innovation is at the heart of Singway’s approach to manufacturing. Their team of skilled designers and engineers continually explores new materials, technologies, and design methodologies to create membrane switches that push the boundaries of performance and aesthetics. This commitment to innovation ensures that you receive cutting-edge products that keep your offerings ahead of the competition.

　　9. Global Reach and Timely Delivery

　　With a robust global supply chain and efficient logistics, Singway ensures timely delivery of your membrane switches, no matter where you are located. Their ability to meet tight deadlines and deliver products on time is crucial for businesses that operate in fast-paced markets and rely on timely product launches and updates.

　　The related functions covered by the ADAS system include lane departure warning, adaptive cruise control, etc., which are complicated and dazzling. Proper classification can help us better understand and apply them.More importantly, put vehicle camera supplier It is imperative for us to make thorough analysis and maximize its social function. https://szdfpls.com

　　The ＾Terms and Definitions of Road Vehicle Advanced Driver Assistance Systems (ADAS)￣ released in 2020 divides the functions covered by ADAS into information assistance and control assistance.

　　1 Information assistance category

　　Information assistance ADAS mainly assists driving by providing the information needed by the driver, which can help the driver understand the surrounding situation and traffic environment, and improve driving safety and efficiency.

　　According to the information type and functional characteristics provided by ADAS, the information assistance category can be further divided into driving monitoring category, danger warning category, and driving convenience category.

　　(1) Driving monitoring category

　　This type of ADAS mainly monitors the driving status and surrounding environment of the vehicle in real time through various sensors and cameras, and provides the driver with real-time vehicle information and traffic conditions. For example, BSD (blind spot detection), ISLI (intelligent speed limit information), etc. belong to this category.

　　(2) Danger warning category

　　This type of ADAS senses and identifies dangerous factors around the vehicle and issues warnings to the driver in a timely manner, reminding the driver to pay attention to potential dangers. For example, DFM (driver fatigue monitoring), FCW (forward collision warning), etc. belong to this category.

　　(3) Driving convenience category

　　This type of ADAS improves driving convenience and comfort by providing the information and functions required by the driver. For example, RCA (reversing condition assist), NV (night vision), etc. belong to this category.

　　2 Control Assistance Category

　　ADAS of the control assistance category assists driving by controlling the vehicle¨s driving state, which can help the driver reduce the burden of driving. According to the specific functional characteristics and usage scenarios, the control assistance category can be further divided into emergency response category, driving convenience category, lane keeping category and intelligent lighting category.

　　(1) Emergency Response Category

　　ADAS of the emergency response category mainly provides rapid response and auxiliary decision-making for sudden or emergency situations, and takes effect quickly in dangerous situations to help drivers avoid or reduce accidents. For example, AEB (advanced/automatic emergency braking) belongs to this category.

　　(2) Driving Convenience Category

　　ADAS of the driving convenience category assists driving by providing the functions and operational convenience required by the driver. For example, ACC (adaptive cruise control), IPA (intelligent parking assist), TJA (traffic jam assist), etc., belong to this category.

　　(3) Lane Keeping Category

　　ADAS of the lane keeping category assists the driver to keep the vehicle in the correct lane by identifying and tracking lane lines. Help the driver avoid lane deviation or keep the vehicle in the correct lane, improving driving safety and stability. For example, LKA (lane keeping assist), LCC (lane centering control), etc.

　　(4) Intelligent lighting category

　　Intelligent lighting ADAS assists the driver in driving under various lighting conditions by automatically adjusting the brightness and illumination range of the lights. For example, AFL (adaptive front light), ADB (adaptive driving beam), etc., belong to the intelligent lighting category.

　　Traveling can be exhilarating, but long journeys often come with discomfort, especially when it comes to sleep. A quality memory foam travel pillow can make all the difference, providing support and comfort during flights, road trips, or even train rides. However, choosing the right one involves considering several factors to ensure it meets your specific needs. Here¨s a guide to help you choose the perfect memory foam travel pillow for your next trip.from travel pillow memory foam From the reference value, it can also bring a lot of inspiration to other industries. https://tainengjikang.com/

　　How to Choose the Perfect Memory Foam Travel Pillow for Your Next Trip

　　JK796

　　1. Consider Your Sleeping Style

　　The first step in choosing a memory foam travel pillow is to consider your sleeping style. Do you usually sleep with your head tilted to one side? Do you prefer sleeping upright or leaning forward? Understanding your typical sleeping position will help you choose a pillow that provides adequate support and aligns your neck and spine properly.

　　2. Neck Support and Comfort

　　One of the primary benefits of a memory foam travel pillow is its ability to contour to the shape of your neck and head, providing personalized support. Look for a pillow with medium to firm density memory foam, as this will offer the best balance of comfort and support. The pillow should maintain its shape and provide consistent support throughout your journey.

　　3. Size and Portability

　　The size and portability of the travel pillow are crucial factors, especially if you have limited space in your carry-on luggage or backpack. Opt for a pillow that is compact and lightweight yet offers sufficient support. Many memory foam travel pillows come with compression bags or travel cases that make them easier to carry and store when not in use.

　　4. Material and Breathability

　　Check the material used in the pillow cover and the breathability of the memory foam itself. A breathable cover helps regulate temperature and keeps you cool during warm journeys. Some pillows feature moisture-wicking properties to prevent sweat buildup, enhancing comfort, especially on long flights or in humid conditions.

　　5. Adjustability and Versatility

　　Consider whether you prefer a traditional U-shaped pillow or a more versatile design that can be adjusted to different sleeping positions. Some memory foam travel pillows offer adjustable straps or toggles that allow you to customize the fit around your neck. This adjustability ensures maximum comfort and support, regardless of how you prefer to sleep.

　　6. Ease of Maintenance

　　Travel pillows can accumulate dirt and odor over time, so choose one that is easy to clean. Look for pillows with removable and washable covers, or those that can be spot-cleaned with ease. This feature not only helps maintain hygiene but also prolongs the lifespan of your travel pillow.

　　7. Durability and Longevity

　　Invest in a travel pillow that is durable and built to last. Quality memory foam retains its shape and resilience over time, ensuring that your pillow continues to provide optimal support through multiple trips. Check customer reviews and product specifications to gauge the durability of the pillow before making a purchase.

　　8. Reviews and Recommendations

　　Before finalizing your decision, read reviews and recommendations from other travelers who have used the pillow. Honest feedback can provide valuable insights into the pillow¨s comfort, support, and overall performance during real-world use. Look for pillows with high ratings and positive reviews to ensure satisfaction.

　　9. Budget Considerations

　　While quality should be your priority, consider your budget when choosing a memory foam travel pillow. There are options available across different price ranges, so you can find a pillow that meets your needs without breaking the bank. Compare features and prices to make an informed decision that aligns with your budget.

　　10. Trial Period and Return Policy

　　If possible, choose a memory foam travel pillow that comes with a trial period or a generous return policy. This allows you to test the pillow and determine if it suits your comfort preferences before committing to it for your travels. A satisfaction guarantee ensures peace of mind and helps you make a confident purchase decision.

　　Anti-loosening nut is a nut, which is a part that is screwed together with a bolt or a screw for tightening. It is an original part required by all production and processing equipment. Anti-loosening non standard nut is a part that tightly connects mechanical equipment together. With the help of the inner thread, anti-loosening nuts and screws of the same specifications can be connected together. The following is a detailed introduction to several methods of preventing anti-loosening nuts from slipping.After that, non standard fasteners Not afraid of the future, dare to fight and fight, and won applause again and again in the market. https://jieruifasteners.com/

　　1. Anti-loosening of equipment

　　It is to use the locking nut stopper to directly limit the relative rotation of the locking nut pair. For example, the use of tooth pins, serial wires and stop washers. Because the locking nut stopper does not have a pre-tightening force, the anti-loosening stopper can only work when the locking nut is loose and returned to the stop position. Therefore, the locking nut method does not actually prevent loosening but prevents falling.

　　2. Riveting and anti-loosening

　　After tightening, use punching, welding, bonding and other methods to make the locking nut pair lose the performance of the kinematic pair and the connection becomes an irremovable connection. The disadvantage of this method is that the bolt rod can only be used once, and it is very difficult to disassemble, and the bolt pair needs to be damaged before it can be disassembled.

　　3. Friction anti-loosening

　　It is the most widely used anti-loosening method. This method forms a positive pressure between the locking nut pairs that does not change with the external force, so as to form a friction force that can prevent the relative rotation of the locking nut pairs. This positive pressure can be achieved by axially or simultaneously pressing the locking nut pairs in two directions. For example, elastic washers, double nuts, self-locking nuts and insert locking nuts are used.

　　4. Structural anti-loosening

　　It is to apply the locking nut pair’s own structure, that is, the Tang’s locking nut anti-loosening method.

　　5. Punching edge anti-loosening

　　After the nut is tightened, the thread is destroyed by punching the end of the thread; bonding anti-loosening generally uses anaerobic adhesive to apply to the thread screw surface. After tightening the anti-loosening nut, the adhesive can solidify by itself, and the actual anti-loosening effect is better. The disadvantage of this method is that the bolt rod can only be used once, and it is very difficult to disassemble, and the bolt pair needs to be destroyed before it can be disassembled.

　　Also known as touch keyboard, it adopts an integral sealed structure composed of a flat multi-layer combination. It is a new type of electronic component that integrates light, machine and electricity, and seals the key switch, panel, mark, symbol display and lining together. It is a fundamental change in the appearance structure of electronic products. It can replace the keys of conventional discrete components and perform the tasks of the operating system more reliably. Membrane switches have good waterproof, dustproof, oil-proof, and anti-corrosion of harmful gases. The performance is stable and reliable, light weight, small size, long life, easy assembly, the panel can be washed without damage to the characters, rich colors, and beautiful appearance. Using membrane switches makes your products more contemporary. Main types of membrane switches The membrane switch panel is an electronic component that integrates switch functions and decorative functions, consisting of a rigid or flexible printed circuit board as the base, with buttons with or without feel installed, and then covered with a plastic (polycarbonate PC, polyester PET, etc.) film panel printed with colorful decorative patterns. It is a new type of human-computer dialogue interface. The connection between its switch circuit and the whole machine can be completed by welding or plugging.It is strictly required by such a standard, membrane switch Only with today’s development scale, can we have the proud momentum to crush our competitors. https://singway-touch.com/

　　membrane switch types

　　Types of membrane switches

　　1. Flexible membrane switch

　　Flexible membrane switch is a typical form of membrane switch. This type of membrane switch is called flexible because the mask layer, isolation layer, and circuit layer of the membrane switch are all composed of flexible films of various properties. The circuit layer of the flexible membrane switch uses polyester film (PET) with good electrical properties as the carrier of the switch circuit pattern. This layer is also divided into hand-feel springs and upper and lower circuits. Due to the properties of polyester film, the membrane switch has good insulation, heat resistance, folding resistance and high resilience. The graphics of the switch circuit, including the switch connection and its lead wires, are printed with low-resistance, low-temperature cured conductive paint. Therefore, the composition of the entire membrane switch has a certain degree of softness, which is not only suitable for use on flat bodies, but also can be used with curved bodies. The lead wires of the flexible membrane switch are integrated with the switch body. When making the connection of the group switch, they are gathered at a certain place on the membrane and extended outward according to the position specified in the design and the standard line spacing. They are connected to the rear circuit of the whole machine as soft, arbitrarily bendable and sealed lead wires.

　　membrane switch types

　　2. Rigid membrane switch

　　Rigid membrane switch refers to a switch whose graphics and circuits are made on a common printed circuit copper-clad board. The characteristics of rigid membrane switch are convenient material acquisition, stable process, low resistance, and certain components in the circuit can be directly welded on its back. In the case of a small area, the rigid lining layer can be omitted. Rigid membrane switches generally use metal guides as the contact points for conducting the labyrinth, so they have a better feel. The disadvantage is that they are not as convenient to install in the whole machine as soft membrane switches, and often require welding and lead-out through flat cables. In addition to buzzer signals and LED indications, the information feedback of rigid membrane switches generally uses metal feel springs.

　　membrane switch types

　　3. Flat membrane switch

　　The buttons on the membrane switch use different colors to indicate the position, shape and size of the key body, which is more common in the initial stage of membrane switches. Three-dimensional membrane switch: Usually, the buttons on the membrane switch only use colors to express the position, shape and size of the key body. In this way, the accuracy of the operation can only be identified by the operator’s vision. Since there is no appropriate feedback information to indicate whether the finger is pressed within the effective range of the switch to make the switch operate, it affects the confidence in monitoring the entire machine and the speed of operation. A membrane switch that makes the switch key body slightly raised and slightly higher than the panel to form a three-dimensional shape is called a three-dimensional key switch. The three-dimensional key can not only accurately give the range of the key body, improve the recognition speed, and make the operator’s sense of touch more sensitive, but also enhance the decorative effect of the product appearance. The production of three-dimensional keys.

　　When selecting a car camera supplier, it¨s essential to consider their expertise in OEM manufacturing and the range of features they offer. Look for suppliers that provide detailed product specifications, robust quality control, and comprehensive customer support.Through bit by bit efforts, let vehicle camera supplier Our market share is getting higher and higher, and the return on investment is also rising steadily. https://szdfpls.com

　　Leading manufacturers like those featured on platforms such as szdfpls.com offer high-quality car cameras designed to meet rigorous standards. By choosing a reputable supplier, you ensure that you receive a product that not only enhances your vehicle¨s safety but also stands the test of time.

　　Conclusion

　　OEM car cameras, including waterproof models and car handle cameras, are essential for modern vehicles, offering superior image quality, versatile functionality, and robust durability. By investing in high-quality cameras from reliable suppliers, you can enhance your driving experience with advanced safety features and superior performance. Whether for daily use or specialty applications, these cameras provide the clarity and reliability needed for effective vehicle monitoring.

　　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.At first, non standard fasteners It developed out of control and gradually opened up a sky of its own. 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.