what is the Working Principle and Design Criteria of Asphalt Milling Picks?
The road milling machine use the high-frequency rotating impact force to break the road surface rock and soil or asphalt, cement, etc. Take Wirtgen 2000 milling machine as an example, its speed is as high as 2300r/min. This requires that the design of the milling picks(teeth) must meet the following conditions:
- The cemented carbide must have sufficient wear resistance and high toughness; Toughness and strength;
- The steel body part has good toughness after heat treatment and strength
- The brazing process is reliable to ensure the quality of welding fixing teeth,
- The matching size and strength of the spring collar and the teeth holder must meet the requirements of high frequency impact.
