Kelleg Blog

This article introduces the characteristics of drill rod fatigue fracture from the perspective of macro and micro.

The importance of lubricating oil to DTH hammers includes lubrication, sealing, rust prevention, and heat dissipation.

The fatigue life of drill rods is affected by material, smelting quality, surface quality, geometric structure, manufacturing process, and rock drilling conditions.

This article introduces you to the three kinds of stress that the drill rod bear during the drilling.

The properties of cemented carbide includ density, hardness, bending strength, impact toughness, compressive strength, linear expansion coefficient, etc .

This article describes the principles of steel used for rock drill bits: tough and wear-resistant, good workmanship, and in line with local resource conditions.

This article describes how to properly transport, store and use drill rods.

This article mainly describes the development history of rock drilling tools for you.

The requirements for the anticorrosion process of rock drilling tools include the process of corrosion damage and the method of anticorrosion treatment.

The basic requirements for threaded extension rods include a combination of high fatigue strength and fracture toughness. Good elasticity and wear resistance.

This article mainly explains the types of threaded extension rods for you, including the thread form, type, and application of threaded extension rods.

There are so many hazards in the noise of rock drilling machinery, how to prevent and control the noise has become a research topic.