Heat treatment is a metal thermal processing process in which the material is heated, insulated, and cooled in a solid state to obtain the desired organization and properties. It is a very important basic process in the manufacture and production of rock drilling tools, which plays a pivotal role in improving their intrinsic quality and service life, and strengthening the competitiveness of rock drilling tools in domestic and international markets, while advanced heat treatment process needs advanced heat treatment equipment, otherwise, it is difficult to bring out the strength and toughness of rock drilling tools.

Heat treatment is a key factor in determining service life of rock drilling tools, and a good heat treatment is also an effective way to save materials. Therefore, many famous rock drilling tools manufacturers keep heat treatment strictly confidential as a favorable competitive means of rock drilling tools and adopt various advanced heat treatment equipment and testing control technology to control the quality of products in heat treatment production while developing various patented technologies, so that the heat treatment process parameters can be optimally adjusted in production according to the accumulated experience and data to ensure 100% qualification of rock drilling tools.

As we all know, the performance of rock drilling tools relies on an advanced heat treatment process to obtain, and the advanced heat treatment process needs advanced heat treatment equipment to ensure. Therefore, we can further understand the heat treatment process through the development dynamics of heat treatment equipment.

Development trend of heat treatment equipment

Computers are used to realize the automatic operation of quenching, carburizing, tempering, and other processes according to the requirements of heat treatment process, to improve the quality of heat treatment of rock drilling tools, to ensure the stability of the quality of rock drilling tools, and to gradually eliminate the adverse effects of human and equipment and other unfavorable factors on the quality of rock drill bits.

Controlled atmosphere multi-purpose furnace technology is an important development of controlled atmosphere heat treatment, which is a perfect combination of precise automatic control technology and a flexible heat treatment process. In addition to the characteristics of precise control, users can flexibly choose configurations to adapt to various production scales, while maintenance is more convenient.

The following is part of equipment commonly used in the heat treatment of rock drilling tools.

1. Controlled atmosphere multi-purpose furnace, usually used for heat treatment of rock drill bits, DTH drilling tools, and other parts.

2. Controlled atmosphere well furnaces, controlled atmosphere large well furnaces are used for heat treatment of large DTH drilling bits, outer casings of DTH drilling tools, and other large parts, as well as heat treatment of heavy drill rods and drill pipes.

3. Controllable atmosphere nitriding furnace, used for heat treatment of precision wear-resistant parts, such as rock drilling machine cylinder, etc.

High-performance heat treatment equipment is an important condition for the selection of rock drilling tools

The strict control of heat treatment process parameters, such as time, temperature, and furnace gas composition, can maintain a stable and high quality of rock drilling tools, and enable effective control of surface quality, surface and core hardness, penetration element concentration, and gradient of penetration layer, and penetration depth of rock drilling tools.

The on-site test results of the controlled atmosphere heat treatment production line have important guiding significance for the selection of heat treatment equipment for rock drilling tools.

1. Strict control of heat treatment process temperature

2. Furnace temperature uniformity is the fundamental condition for quality stability

3. Precise control of heat treatment carbon potential

4. Uniformity and decarburization detection of the seepage layer

To sum up, modern advanced heat treatment equipment has broken away from the concept of old-fashioned furnaces. Not only has a heating and cooling system but also automatic material conveying system, furnace gas generation and measurement control system, a process control system that can monitor the status of process at any time, and is equipped with a display, printing, and alarm system. We believe that with the continuous development of heat treatment equipment, the level of heat treatment will inevitably rise to a new level, which also provides a broader development space for the development of rock drilling tools.