Varroc Group Tool Room Engineer Interview Questions and Answers

The hardness of core pine varies depending on the specific species and age of the wood.

• The hardness of pine wood is typically measured using the Janka hardness test.

• Different species of pine have different hardness levels.

• Older pine wood tends to be harder than younger wood.

• The Janka hardness rating for Eastern White Pine is around 380 lbf, while Southern Yellow Pine can range from 690 to 870 lbf.

The material of PDC (Polycrystalline Diamond Compact) die is typically made of synthetic diamond.

• PDC die is used in the manufacturing of cutting tools for drilling and milling applications.

• The synthetic diamond material used in PDC die is created through high-pressure, high-temperature (HPHT) processes.

• The diamond material provides exceptional hardness and wear resistance, making it suitable for demanding tooling appli...read more

Stress relieving in inserts requires heat treatment to reduce internal stresses and improve material properties.

• Heat treatment is necessary to relieve stress in inserts.

• The process involves heating the insert to a specific temperature and holding it for a certain duration.

• The temperature and duration depend on the material and the desired outcome.

• Stress relieving helps to minimize distortion, improve dimensional stabil...read more

A tool is an object or device used to perform a specific task or function.

• Tools can be hand-held or power-operated

• Examples include hammers, screwdrivers, drills, and saws

• Tools are often designed for specific tasks or materials

• Proper use and maintenance of tools is important for safety and effectiveness

Prevent moulding breakdown by ensuring proper maintenance, monitoring and troubleshooting.

• Regularly inspect and clean moulding equipment

• Monitor temperature and pressure to ensure they are within optimal range

• Troubleshoot any issues immediately to prevent further damage

• Train operators on proper use and maintenance of equipment

• Use high-quality materials to prevent wear and tear

• Implement preventive maintenance schedule

• Ens...read more

Types of maintenance include corrective, preventive, predictive, and proactive maintenance.

• Corrective maintenance involves fixing a problem after it has occurred.

• Preventive maintenance involves scheduled maintenance to prevent problems from occurring.

• Predictive maintenance involves using data to predict when maintenance is needed.

• Proactive maintenance involves identifying and addressing potential problems before they o...read more

The drill bit angle and M12&M8 drill size depend on the material being drilled and the desired hole size.

• The drill bit angle should match the material being drilled for optimal performance.

• M12 and M8 refer to the diameter of the drill bit in millimeters.

• For example, a 118 degree angle is suitable for drilling soft materials like wood and plastic, while a 135 degree angle is better for harder materials like metal.

• The si...read more