Among the many key components of excavators, the application of alloy materials provides strong support for its powerful performance. First, let's look at the bucket teeth. As the pioneer of excavators that directly contact materials such as soil and rocks, bucket teeth are usually made of high-strength alloy steel. This alloy steel has remarkable high hardness, high wear resistance and good toughness. During the excavation process, it can steadily withstand huge impact and wear. For example, some bucket teeth are made of chromium-molybdenum alloy steel. After a special heat treatment process, the hardness can be as high as HRC50 or above, which greatly improves the service life. For second-hand dealers, the condition of bucket teeth is one of the important considerations when acquiring second-hand excavators. If the bucket teeth are severely worn, it will not only affect the working efficiency of the excavator, but may also require investment in replacing new bucket teeth, thereby reducing the value of the equipment. On the contrary, if the bucket teeth are less worn, it means that the equipment is in relatively good condition, which can also become a highlight when selling and attract customers' attention.
Track shoes are also an indispensable part of excavators, generally made of manganese alloy steel. Manganese alloy steel is known for its good wear resistance, impact resistance and high strength, and can easily adapt to various complex terrains and working environments. During the walking process of the excavator, the track plate is subjected to huge pressure and friction, and the use of alloy materials ensures its long-term stable operation. When evaluating a used excavator, second-hand dealers will carefully check the wear of the track plate. If the track plate is excessively worn, it may mean that the equipment has been used in a harsh environment for too long or has been improperly maintained. When selling a used excavator, dealers can emphasize to customers the importance of track plates and the advantages brought by alloy materials, such as higher durability and the ability to adapt to various terrains.
Pins and bushings also play a key role in excavators. They are usually made of alloy steel or copper alloy. Alloy steel pins have high strength and wear resistance and can withstand the huge loads in excavation operations. Copper alloy bushings, with their good self-lubricating properties, greatly reduce the friction between the pin and the bushing and extend the service life. When inspecting a used excavator, second-hand dealers will pay attention to the matching of the pin and bushing and the degree of wear. If these parts are severely worn, it may affect the operating accuracy and stability of the excavator. When selling, dealers can introduce to customers how to properly maintain the pin and bushing to extend the service life of the equipment.
The piston rod of the hydraulic cylinder is also one of the important components, and is generally made of high-strength alloy steel. After precision machining and surface treatment, it has good wear resistance, corrosion resistance and dimensional stability. Under the action of the hydraulic system, the piston rod needs to frequently extend and retract, and the use of alloy materials ensures its reliability under high pressure and high speed movement. Second-hand dealers will check the surface condition and movement performance of the piston rod to judge the overall state of the hydraulic system. When selling second-hand excavators, dealers can explain to customers the importance of the hydraulic cylinder piston rod and the guarantee of its performance by alloy materials.
In short, alloy accessories in excavators play a vital role in the performance and life of the equipment. For second-hand dealers, understanding the characteristics and conditions of these alloy accessories can better evaluate the value of second-hand excavators and provide customers with more professional advice and services. In the second-hand market, the quality and condition of these alloy accessories are also one of the focuses of customer attention. Therefore, second-hand dealers need to pay attention to the inspection and maintenance of these accessories to improve the competitiveness and reliability of second-hand excavators.