Why the HPGR carbide studs will broken

Why the HPGR carbide studs will broken

The main performance indexes of tungsten cobalt cemented carbide stud include hardness, bending strength, impact toughness, bending magnetism, etc. Generally speaking, the higher the material hardness, the better the wear resistance; The higher the bending strength, the better the fatigue resistance; The impact toughness of cemented carbide stud is better, so the fracture resistance is better. There are many factors that affect the performance indexes of tungsten cobalt cemented carbide studs. For example, the higher the cobalt content, the higher the bending strength and impact toughness, and the lower the relative hardness and bending strength.

Therefore, the service life of the roller press can be greatly improved only by selecting the cemented carbide studs that meet the performance indicators of specific application conditions. Z Well, the proportion of raw materials shall be determined according to the operating conditions of the cemented carbide stud. Tungsten cobalt cemented carbide stud has the advantages of wear resistance and high hardness, but its shear resistance is slightly weak,. Damage may also occur during use, such as breakage or accelerated wear. During the production and operation of the pin roller, the pin bears severe high stress abrasive wear, shear damage and long-term fatigue damage. During the operation, the pin will break, peel off and wear seriously, which will affect the output and service life of the roller press. Here we summarize the common reasons for the damage of tungsten cobalt cemented carbide stud.

1. The applicability and quality of column nail brand. In the selection of cemented carbide brand, the model must be selected according to the abrasiveness of materials under actual operating conditions, and the hardness, bending strength, impact toughness and other performance indicators Z must be selected as the appropriate stud brand.

2. Abrasive wear. With the repeated operation of the roller press, the protective layer of the material cushion is formed and damaged repeatedly, causing the abrasion of the column nails.

3. Shear force is damaged. Although the cemented carbide stud has ultra-high wear resistance, its shear resistance is poor. Under the impact of large materials, the cemented carbide stud will inevitably break, drop corners, and wear faster. Therefore, it is important to control the size of materials.

The above are the common causes and solutions for the damage of tungsten cobalt cemented carbide stud, hoping to help reduce the probability of the damage of cemented carbide stud. Improve the service life of cemented carbide stud. Please select Zhuzhou Jinxin for high-quality cemented carbide column top.