In the cone crusher, the rolling wall plays an extremely important role as a key accessory. The main material is high manganese steel, which has the unique property that when subjected to severe impact or contact stress, the surface will harden rapidly, while the core still retains strong toughness. And, the more intense the impact, the higher the degree of surface hardening, wear resistance is also stronger, its surface hardening Rockwell hardness can be as high as HRC60 or more.
However, there are many challenges when it comes to the actual cutting and machining of high manganese steel rolling molar walls. Due to the great degree of work hardening of high manganese steel, while the thermal conductivity is extremely low, the heat generated during the cutting process can not be quickly conducted out, resulting in a sharp accumulation of heat, which caused great wear and tear on the blade. Because of this, high manganese steel rolling wall in the cutting, the selection of blade material standards are very strict, the traditional carbide inserts or ceramic inserts are difficult to meet its processing conditions.
Zhengzhou BERLT for high manganese steel cutting processing characteristics, and independently developed the BTS3800 grade whole sintered CBN inserts. This insert has many excellent characteristics, with high hardness, toughness, red hardness and high thermal conductivity. In rough turning high manganese steel rolling mortar wall, it can one-time removal of machining allowance, which not only greatly improves the processing efficiency, but also significantly reduces the processing cost.
The use of BERLT's CBN inserts for mill wall machining has a number of significant advantages. First of all, CBN cubic boron nitride insert hardness is very high, second only to diamond, even at high temperatures, can still maintain a high hardness, in the rolling mortar wall for the large amount of turning, its effect is far better than the carbide inserts. Secondly, CBN inserts have good wear resistance, impact heat resistance and high thermal conductivity, even if the casting defects such as sand traps and air holes are encountered in a high temperature environment, there will be no such as intense wear, chipping and other undesirable phenomena. Furthermore, the overall sintered CBN inserts have high fracture toughness, high flexural strength, and a large number of tips, which enables them to carry out large margin turning on the rolling mortar wall, which strongly improves the processing efficiency.
Zhengzhou BERLT in the field of super-hard cutting tools with outstanding achievements. As early as 2002 will start the large-scale production of cubic boron nitride insert journey, the development so far, its annual output of cubic boron nitride insert has been stable at more than 5 million pieces. Its products have a wide range of applications, covering more than 90% of the domestic market in the field of hard cutting and heavy cutting, and it can be called the PCBN tool manufacturer with the longest history and strongest comprehensive strength in China. Starting from material preparation and gradually expanding to the production of superhard cutting tools, Zhengzhou BERLT has already built up a complete industrial chain of ‘superhard materials - superhard composites - superhard cutting tools’, and has always been adhering to the principle of building the brand of superhard cutting tools with the best quality and the largest scale in the same industry and the lowest cost, BERLT has built a complete industrial chain of ‘superhard materials - superhard composite materials - superhard cutting tools’, always adhering to the firm belief of creating the brand of superhard cutting tools with the best quality, the largest scale and the lowest cost in the same industry, and the quality is always the same, which provides solid and reliable protection of cutting tools for the machining of many industries.
