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The use of piston rod and piston are often inseparable, generally in the use of piston products will use the piston rod this product. Because the piston rod is a connecting part used to support the piston to do work, since it is a connecting part, then the piston rod and the piston must be connected before it can be used. Then do you know what kinds of connections the piston rod and the piston have? Piston rod head connection mode:The connection of the piston rod head mainly refers to the connection part of the piston rod and the external load (component), and the main connection structure is the thread type and the single earring type, which must be determined according to the actual work situation when applied in actual work. Piston rod tail connection mode:The connection mode of the piston rod tail mainly refers to the connection part of the piston rod tail and the piston, and there are many kinds of structural forms, among which the more prominent is the clamping key connection structural form. This type of card and key connection structure is convenient to install, and its performance is also better, so it is used more. Piston rod main body connection mode:The connection between the main body of the piston rod and the piston can be divided into two cases: solid type and hollow type. The solid type is often used in general circumstances, while the hollow type is more commonly used in special requirements, such as the piston rod in the servo hydraulic cylinder must be equipped with a sensor. Therefore, the solid piston rod can be mainly applied to the occasions of small rod diameter, and when the rod diameter is large, in order to reduce the weight, the hollow piston rod is generally used.The above content

Piston Profile: The piston is the “heart” of an automobile engine, which bears alternating mechanical and thermal loads, and is one of the key components in the engine with the harshest working conditions. The function of the piston is to withstand the gas pressure and drive the crankshaft to rotate through the piston pin to the connecting rod, and the piston top is also an integral part of the combustion chamber. The types of pistons are generally divided into: diesel vehicle pistons, gasoline vehicle pistons, and general-purpose pistons. The function of the piston is to withstand the gas pressure and drive the crankshaft to rotate through the piston pin to the connecting rod, and the piston top is also an integral part of the combustion chamber. Working conditions: The piston works under the conditions of high temperature, high pressure, high speed, and poor lubrication. The piston is in direct contact with the high-temperature gas, and the instantaneous temperature can reach more than 2500K, therefore, the heating is serious, and the heat dissipation conditions are very poor, so the temperature of the piston is very high, the top is as high as 600~700K, and the temperature distribution is very uneven; The top of the piston bears a lot of gas pressure, especially the maximum power stroke pressure, the gasoline engine is as high as 3~5MPa, and the diesel engine is as high as 6~9MPa, which makes the piston have an impact and bear the effect of side pressure; The piston reciprocates at a very high speed (8~12m/s) in the cylinder, and the speed is constantly changing, which produces a great inertia force and makes the piston subject to a large additional load. The piston works under such harsh conditions, which can deform and accelerate wear, as well as additional loads and

Piston rod commonly used material and selection The piston rod is a moving part with frequent movement and high technical requirements, and is one of the main key parts of the hydraulic cylinder. Commonly used piston rod material Piston rod is a kind of shaft parts, it is relatively slender, its long diameter is relatively large, its main use of the following materials： 1.45# Steel ( C45 , SAE1045 ) material45# steel is a high-quality carbon structure steel, the hardness is not high and easy to cut, after quenching, its surface hardness can reach 45-52HRC. And it can also have better cutting performance and higher strength, toughness and other comprehensive mechanical properties, so it is one of the commonly used materials for shaft parts. Usually for shock absorber we use 45# material . 2.40Cr steel40Cr steel is also a more commonly used material in the production of piston rods, it is not only a medium carbon tempered steel, but also a cold heading die steel. It has good comprehensive mechanical properties and is generally suitable for the manufacturing of shaft parts with medium precision and high speed. 3.Stainless SteelStainless steel has the characteristics of resistance to air, steam, water and other weak corrosive media, commonly used 304, 316, 402 these materials. theseThe weldability, polishing, heat resistance, corrosion resistance, corrosion resistance are relatively good, through precision cold drawing, fine grinding, high precisionDegree polishing and other processes, the technical indicators of the piston rod manufactured by it are in line with and exceed national standards, so it is often used in hydraulic cylinders. Piston rod material selection 1.The piston rod of the hydraulic cylinder is usually made of 45# steel, which is tempered and treated with chromium plating 0.03~0.05mm thick after surface turning and grinding.Typical chrome-plated piston rods use 45 # steel,

Automobile shock absorber is an important part of automobile suspension system, its function is to restrain the spring rebound shock to the absorption of vibration and deformation, and absorb the impact of the road. It directly affects the ride comfort and maneuverability of the vehicle, which will affect our driving safety. The role of shock absorbers From the name of the shock absorber, it seems that the vibration of the vehicle is mainly absorbed by the shock absorber, in fact, it is not. The energy generated by the vibration of the vehicle through the uneven road surface is mainly absorbed by the spring, and the spring will produce a rebound shock after absorbing the shock, at this time, the shock absorber is used to slow down the shock caused by the spring. When the shock absorber fails, the car will not bounce on the road because of the bouncing energy of the shock absorber spring, which affects the stability and comfort of driving. Simply put, the main purpose of the shock absorber is to inhibit the bounce of the spring and quickly eliminate the bounce of the body. We usually say that the car vibration and soft and hard, refers to the damping force, the greater the force, the harder the shock absorber. If the shock absorber is too soft, no spring can quickly absorb the vibration, the body will jump up and down between the tire and the ground, the adhesion is not good, but the comfort of the car will be better, the general family car tends to use soft shock absorber shock absorber; If it is too hard, it will bring too much weight. The resistance spring prevents the buffering function, but the adhesion between the tire and the ground is better, so the damping of some sports cars

Introduction As one of the core parts of suspension shock absorber, the piston rod of automobile shock absorber is not only affected by axial and lateral reciprocating force, but also by friction. Under the action of these forces, the piston rod is easy to cause strength, deflection, fatigue failure, and also easy to cause oil seal failure. In order to improve the mechanical properties of the piston rod and achieve hard wear resistance and good soft toughness inside, the surface of the piston rod is treated with hard chromium plating with micro-cracks. The thick, thin or uneven coating caused by improper electroplating process of piston rod will lead to the reduction of mechanical characteristics of piston rod and directly affect the ride comfort, stability and safety of automobile. When the scratches caused by poor plating and improper handling, electroplating attachments and electroplating pores lead to macroscopic defects on the surface of the cylinder, it is easy to lead to the strength, deflection, fatigue and wear failure of the piston rod. Due to the unreasonable electroplating process, the micro-crack density on the cylinder surface of the piston rod is unqualified, which affects the friction between the piston rod and the guide seal assembly of the shock absorber. Therefore, good chrome plating technology of piston rod and high precision and high quality detection technology are of great significance to ensure the quality of the piston rod of shock absorber . 1.Piston rod requirements for chrome plating.The requirements of the piston rod for the chromium plating layer are respectively the requirements for the hardness of the coating, the requirements for the thickness of the coating, the requirements for micro-cracks, the requirements for the adhesion of the coating, the requirements for the surface roughness and the requirements for the appearance.1.1Requirements for hardness of chrome plating

When it comes to coilovers, there’s no shortage of options. Everything from entry level coilovers starting at around $350 to top of the line coilovers going up to $5000 or more. So it’s no doubt that as customers research what setup they want for their car, the question of where the coilovers are made comes up a lot. Due to this, we have decided to compile a list of coilover brands and where they are made. Please contact us if you have anything to add to this list. Brand Line                      MadeBC Racing  –  TaiwanBilstein    –  GermanyMaxAuto  — ChinaD2 Racing  –   TaiwanDinan    –   PendingFOX Racing – PendingFortune Auto –  USAFunction & Form–TaiwanFortune Auto –   USAGodspeed Project –TaiwanHKS   –  JapanJDMSPEED –ChinaKSport Kontrol  –TaiwanKW Automotive  — GermanymaXpeedingrods –  ChinaMegan Racing — TaiwanOhlins  — SwedenPedders — PendingQA1 –PendingRaceComp –PendingRaceland–ChinaRevel — PendingRS-R–  PendingSilvers –TaiwanSkunk2 — PendingSkyjacker –PendingST Suspensions — PendingStance — USATanabe — PendingTEIN –JapanTruHart –USA If you have any questions about where coilovers are made or about a specific brand’s quality, please ask below. Max Auto with several years develop have become the top manufacturer from China , it amis to be the top coilover brand in the world . The monotube coilover quality have been tested by more than millions of customers in the world .

We sincerely invite you and your company representatives to visit our booth at an internationally renowned professional exhibition in Istanbul. Booth No.: 11A E190Date:June 9 to June 11Vanue:Istanbul TUYAP Fair and Congress CenterE-5 Karayolu, Gürpinar Kavsagi34522 BuyukcekmeceIstanbul, Turkey