The working principle of tungsten carbide HPGR studs

Tungsten carbide HPGR studs are primarily used in High Pressure Grinding Rolls (HPGR) and serve as key wear-resistant components that significantly enhance ore crushing efficiency and extend equipment service life. These studs are typically cylindrical in shape (with a diameter of 5–15 mm and a height of 10–30 mm). The top of the stud can be designed as flat, conical, or rounded to meet different material crushing requirements. If you are unsure about the specific shape needed, you can always consult with Jinxin experts for a suitable solution.

HPGR is an energy-efficient and high-performance ore crushing equipment. It applies compressive force (pressure up to 100–300 MPa) to the material through two counter-rotating high-pressure rollers. The material is crushed through a combination of compression, shearing, and grinding forces between the rollers. Its core working features include:

Tungsten carbide studs are embedded into the steel substrate of the roller surface and arranged in specific patterns (such as spiral or regular matrix) to form a highly wear-resistant roll surface.

As the ore passes through the two high-speed, counter-rotating rollers, it is subjected to intense compression, shearing, and grinding forces. The tungsten carbide studs on the roller surface directly contact and press the ore, creating localized high-pressure points that crush large particles into finer ones.

Through a ''point contact'' mechanism, the studs help distribute the overall force evenly. A material bed is formed between the studs, which reduces direct contact between the studs and coarse particles, effectively minimizing wear on the roller's steel substrate and prolonging the lifespan of the roll surface.