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When you are driving, after the bumpy road, you will find that the damping effect of the vehicle is not so good, this should be the aging of the damping spring, most of the aging of the damping spring after some symptoms can let us judge, so what will the performance of the aging of the car damping spring?Damping spring aging performance1. The ride feels differentAfter the aging of the shock absorber spring, when we ride or drive the vehicle, after a bumpy road, we can obviously feel the car bumpy feeling is very strong, not so comfortable feeling, from this point can be judged that the shock absorber spring has been aging.2. The temperature is abnormalAfter the vehicle is driven on a bumpy road, we can touch the shell of the car shock absorber with our hands to feel the temperature of the shock absorber. After driving, the temperature of the shock absorber will be warm to prove that it has worked. If it is broken, then the temperature of the shock absorber is cool.3. body shakingWhen the vehicle stops, press a corner of the vehicle and then release, observe the shaking of the vehicle. If it is in a stable state soon after the rebound, it shows that the effect of the shock absorber is still very good. If the vehicle shakes several times before it stops after the rebound, it proves that the shock absorber has been broken or the spring is aging.4. Shock absorber leaks oilThe shock absorber is in a relatively dry state after use. If the shock absorber is broken, there will be oil leakage, that is, the hydraulic oil inside the shock absorber spills from the piston rod.How to solve itWhen this happens, it is certainly difficult for us to solve, so we

In order to make the frame and body vibration attenuation rapidly, improve the ride comfort and comfort of the car, the car suspension system is generally equipped with shock absorbers, the car is widely used is two-way action cylinder shock absorbers. The test of shock absorber includes the performance test of shock absorber, the durability test of shock absorber and the double shock test of shock absorber. The indicator test, friction test and temperature characteristic test are carried out for each type of shock absorber. First, make the car stop after driving 10km on the road with poor road conditions, and touch the shock absorber shell by hand. If it is not hot enough, it indicates that there is no resistance inside the shock absorber and the shock absorber does not work. At this time, appropriate lubricating oil can be added, and then the test is carried out. If the shell is heated, the shock absorber is short of oil, and sufficient oil should be added. Otherwise, the shock absorber fails. Two, press the bumper hard, and then release, if the car has 2~3 jumps, it indicates that the shock absorber works well. Three, when the car is moving slowly and the emergency brake, if the car vibration is more severe, it indicates that there is a problem with the shock absorber.Four, remove the shock absorber upright, and the lower end of the connection ring clamped on the pliers, pull the damping rod several times, at this time there should be stable resistance, pull up (recovery) resistance should be greater than the resistance to the downward pressure, such as unstable resistance or no resistance, may be the shock absorber internal oil or valve parts damaged, should be repaired or replaced parts.RepairAfter determining that the shock absorber has a problem or

Maintenance will prolong the service life of the car, improve the safety performance, save money and remove many car repair troubles. However, nowadays, the concept of “repair for insurance” still exists in the driver team, because of the lack of insurance or improper maintenance caused by traffic accidents frequently occur. Therefore, timely and correct maintenance of the car is an important part of extending the service life of the car and ensuring driving safety.Usually said car maintenance, mainly from the maintenance of good technical condition of the car, to extend the service life of the car work. In fact, it also includes car beauty care and other knowledge. In summary, there are mainly three aspects:First, car body maintenance. Body maintenance is also used to call car beauty. The main purpose is to remove all kinds of oxidation and corrosion outside and inside the vehicle, and then protect it. It mainly includes: car paint maintenance, cushion carpet maintenance, bumper, car skirt maintenance, instrument platform maintenance, electroplating processing maintenance, leather plastic maintenance, tire, hub warranty, windshield maintenance, chassis maintenance, engine appearance maintenance.Two. car maintenance. To ensure that the car is in the best technical condition. It mainly includes: lubrication system, fuel system, cooling system, braking system, carburetor (nozzle) maintenance, etc.Three. car body renovation. Such as deep scratch diagnosis, management, multi-material bumper repair, hub (cover) repair, leather, chemical fiber material renovation, engine color renovation.Car maintenance is divided into regular maintenance and non-regular maintenance two major categories. Regular maintenance: daily maintenance, primary maintenance, secondary maintenance;Non – periodic maintenance: run – in period maintenance and seasonal maintenance. The main work of car maintenance is nothing more than cleaning, inspection, fixing, adjustment and lubrication.The following simple introduction to car maintenance common sense, hope to provide you with some help.1. Common sense of oil replacementHow often is

Toyota agreed to raise the price of automotive steel sold to suppliers by 20% to 30% According to foreign media reports, Toyota is Japan’s largest steel buyer and is responsible for purchasing steel for the company and its suppliers. After the latest round of talks with Nippon Steel, Toyota agreed to raise the price of automotive Steel sold to its parts suppliers by about Y40,000 ($289) a tonne between October and March, equivalent to an increase of about 20-30 per cent. The previous biggest jump was about Y20,000 a tonne between April and September.Since fiscal 2010, Toyota and Nippon Steel have renegotiated prices every six months based on changes in the cost of iron ore, coking coal and other raw materials. In recent talks, the two companies agreed to raise prices for the third time in a row. Toyota’s purchase price is used as a benchmark by industries ranging from shipbuilding to home appliances. Many Japanese companies are said to be feeling the impact of the price hike.The move came as the escalation between Russia and Ukraine accelerated a surge in commodity prices. Coking coal prices hit a record high in the second quarter, up 30 per cent from the first quarter. Iron ore prices are also high. Palladium, used in catalytic converters, was up more than 10% from its July low by the end of August. Toyota expects material costs to increase by 1.7 trillion yen for the current fiscal year, which runs from April 2022 to March 2023. According to foreign media reports, Toyota is Japan’s largest steel buyer and is responsible for purchasing steel for the company and its suppliers. After the latest round of talks with Nippon Steel, Toyota agreed to raise the price of automotive Steel sold to its parts suppliers by about Y40,000 ($289)

The piston rod is a connecting part that supports the work of the piston. It is a moving part with frequent movement and high technical requirements, which is mostly used in the moving parts of the oil cylinder and the cylinder. Taking the hydraulic cylinder as an example, it is composed of cylinder, piston rod (cylinder rod), piston and end cover. The quality of its processing directly affects the life and reliability of the whole product.The machining requirements of the piston rod are high, the surface roughness requirements are Ra0.4 ~ 0.8μm, and the coaxiality and wear resistance requirements are strict. The basic feature of cylinder rod is elongated shaft processing, which is difficult to process and has been troubling the processing personnel. The role of the piston rod.The function of the piston rod is to connect the piston and the cross head, transfer the force acting on the piston and drive the piston motion.Basic requirements for piston rod:(1) to have enough strength, stiffness and stability;(2) Good wear resistance and high machining accuracy and surface roughness requirements;(3) Minimize the influence of stress concentration on the structure;(4) ensure that the connection is reliable and prevent loosening;(5) piston rod structure design to facilitate the disassembly of the pistonProcessing technologyThe piston rod is processed by rolling, so as to improve the corrosion resistance of the surface and delay the generation or expansion of fatigue cracks, so as to improve the fatigue strength of the cylinder rod. Through ROLLING FORMING, a cold hardening layer IS formed ON the rolling surface, which reduces the elastic and plastic deformation of the contact surface of the grinding pair, so as to improve the wear resistance of the cylinder rod surface and avoid the burn caused by grinding. After rolling, the surface roughness decreases and the mating properties

The piston rod fracture phenomenon is basically unable to repair and recover, once it will cause great economic losses, so the prevention of such failures is very important. Yantai Shunfa piston rod manufacturers will introduce the reasons for its fracture, the analysis is as follows. 1. Operational problems. The piston rod fracture may be caused by improper operation of the operator or non-standard operation.2. Product problems. The quality of the piston rod is also one of the reasons for the fracture. Although there are few cases of breakage caused by product quality problems, this possibility cannot be ruled out at will.3. Equipment problems. The quality of its equipment is also an aspect to consider. Take the excavator as an example, if the shaft and sleeve clearance is too large, the excavator in the operation of the formation of the shaking cylinder, will also make it broken.4. Load problem. Piston rod selection, generally according to the actual needs of the requirements to choose. But sometimes because of the special needs of the work, the piston rod high-frequency vibration or tension becomes larger, and this situation lasts for a long time will also make the piston rod stress is very large, so it is easy to break. 5. Installation problems. It is possible that the flywheel was installed incorrectly or tilted. Because the flywheel is not installed correctly, the internal stress of the piston assembly will be increased. The flywheel tilt will cause additional inertia and additional inertia torque, so that the piston rod axis and cylinder liner shaft does not coincide, resulting in piston and cylinder liner inner surface of the fitting surface tilt, under the above double action, easy to make the piston rod fatigue fracture.6. Gap: under normal circumstances, there is no point on the assembly, which leads to

With the development of science and technology, automobiles have higher requirements for shock absorbers. At present, adjustable resistance shock absorbers are becoming mainstream shock absorbers. With continuous research and development, the intelligence will become higher and higher, and the Towards the direction of adaptive adjustable shock absorbers, no matter how the driver’s driving skills are, the suspension system will automatically adjust the state to adapt to it, so that the driver feels smooth and comfortable. In order to quickly attenuate the vibration of the frame and body and improve the ride comfort and comfort of the car, the suspension system of the car is generally equipped with a shock absorber, and the two-way acting barrel shock absorber is widely used in the car. The shock absorber is a vulnerable part during the use of the car. The performance of the shock absorber will directly affect the driving stability of the car and the life of other parts. Therefore, the shock absorber should always be in good working condition. According to the “2022-2027 In-Depth Research and Future Development Trend Forecast Report on the Automotive Shock Absorber Industry” released by Zhongyan Puhua Industry Research Institute: With the rapid development of the domestic automobile industry, the shock absorber industry is also developing rapidly. At present, there are more than 100 large-scale shock absorber manufacturers. However, domestic shock absorber technology is still relatively backward, and the shock absorber technology of domestic high-end models still needs to be imported. These indicate that domestic shock absorber manufacturers still need to work hard to keep up with the pace of international advanced technology to develop independent products. At present, the resistance adjustable shock absorber is becoming the mainstream shock absorber. With continuous research and development, the intelligence will become higher and higher, and it will develop in

Max Auto Parts is the manufacturer of sintered part factory( include shocks piston, shocks valve ,shock absorber rod guide , if you are repair or assembly shock absorber, welcome to contact us to get more information . We have many professional engineer ,we are free with consult for all shock absorber assembly related questions . The shock absorber has a service life, and when the car has these 2 characteristics, the shock absorber may need to be replaced There are many wear parts on the car, which need to be replaced according to the time of use or driving mileage, but most of the wear parts we are familiar with, such as brake pads, spark plugs, tires, etc., and the replacement cycle is also familiar. However, most people know little about the maintenance of shock absorbers. In fact, shock absorbers and these loss parts are similar and have service life. Like shock absorber and other rubber parts, it will also age; And the shock absorber used for a long time, will also appear loose, produce abnormal sound. Although the service life of the shock absorber is long, but there will be aging one day, aging will need to be replaced. But we have to admit, for us, most of the shock absorber replacement, because of oil leakage, this is because oil leakage observation is the most intuitive, the most easy to find. In fact, there are many failure forms of shock absorber aging and damage, among which chassis abnormal noise and jitter are one of them. There are two main characteristics of abnormal noise caused by the aging (fault) of shock absorpers. First, it occurs on uneven road surface, and the body shakes seriously on uneven road surface, which is caused by abnormal noise caused by shaking. Second, the vibration caused

Due to the increasing requirements of modern people for ride comfort and handling stability, non-independent suspension systems have gradually been eliminated. The independent suspension system is widely used by automobile manufacturers because of its good wheel touch ability, greatly improved riding comfort and handling stability, free movement of left and right wheels, large degree of freedom between tires and ground, and good vehicle handling. Common independent suspension systems have multi-link suspension systems, MacPherson suspension systems, towing arm suspension systems, and so on. When replacing the brake oil, be sure to drain the original brake oil, can not be mixed, and the brake oil can not be mixed with air. Generally speaking, the degree of wear of brake pads has a lot to do with the use of habits, the brake pads of the automatic transmission car are used more than the cost of manual transmission, generally more than 20,000 kilometers later, every time you do maintenance, you must check the sprinkler brake pads. This allows for better protection of the suspension system.

1.tire Replacement cycle: 50,000-80,000km Replace your tires regularly. A set of tires, no matter how durable, won’t last a lifetime. Under normal conditions, a tire replacement cycle is 50,000 to 80,000 kilometers. If you have a crack on the side of the tire, even if you haven’t reached the driving range, Also replace it for safety’s sake. They must be replaced when the tread depth is less than 1.6mm, or when the tread has reached the wear indication mark 2. Rain scraper Replacement cycle: one year For the replacement of wiper blade, it is best to replace once a year. When using wiper daily, avoid “dry scraping”, which is easy to damage the wiper Serious can cause car glass damage. The owner had better spray some clean and lubricating glass liquid, and then start the wiper, Usually wash the car should also be cleaned at the same time a rain scraper. 3. Brake pads Replacement cycle: 30,000 km The inspection of the braking system is particularly important, which directly affects the safety of life. Under normal circumstances, brake pads will increase with the driving distance, and gradually wear. Brake pads must be replaced if they are less than 0.6 cm thick. Under normal driving conditions, brake pads should be replaced every 30,000 kilometers. 4. Battery Replacement cycle: 60,000km Batteries are usually replaced after 2 years or so, depending on the situation. Usually when the vehicle is turned off, the owner tries to use the electrical equipment of the vehicle as little as possible. Prevent battery loss. 5. Engine timing belt Replacement cycle: 60000 km The engine timing belt should be checked or replaced after 2 years or 60,000 km. However, if the vehicle is equipped with a timing chain, It doesn’t have to be “2 years or 60,000km” to replace