Low alloy high strength steel AISI 4140 has been widely used in the field of machinery, aviation, petroleum, Marine and other low-temperature parts such as shaft, gear, connecting rod; Transmission gear, turbocharger gear, engine cylinder, spring clamp, oil drill pipe clamp and other parts; In the mold manufacturing industry, AISI 4140 is suitable for large…
High carbon steel refers to the carbon content of more than 0.6% of the steel, it is mainly used to require high hardness and wear resistance of machine parts, such as rotating shaft, gear, bearing and coupling. It has a greater tendency to harden than medium carbon steel, and forms high carbon martensite, which is…
In the process of processing, we will find that medium and high carbon steel such as spring steel, bearing steel, wheel and axle steel will be prone to multiple fractures, from the fracture sampling for metallographic analysis is often unable to find the reason. These steels generally required high fatigue resistance and the fracture toughness…
The cutting and grinding performance of most stainless steel is not good, it is difficult to process stainless steel parts with a smooth surface on high-speed automatic machine tools, the addition of sulfur, selenium, or lead and other elements can greatly improve the cutting (grinding) performance, free-cutting or free-machining stainless steel is developed in this…
Some people often confused tool steels with mold steels because their definitions seem similar. Generalized tool steels include mold steels, which have some common characteristics, such as the need to bear great local pressure and strong wear, how to achieve the balance of toughness and wear resistance is their biggest contradiction. In a narrow sense,…
Cold work tool steels are the main raw materials for tools such as gauge, drill steel and punch press, as well as dies such as stamping, forging, rolling and rolling. In cutting, bending, stamping, compression and other processes, the mold is subjected to high surface pressure and impact load, most of the mold due to…