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Flat breaker tool performance requirements and its two process parameters
- Nov 11, 2017 -

【Overview】 Flat breaker tool, from its name can be seen that it belongs to the category of drill rod, and, in its application, and ordinary drill rod similar. So, if you want to realize the correct use of the drill rod, and have good results, then, is to have a comprehensive understanding and understanding, so the following, to carry out the relevant knowledge to explain the work in order to achieve the above goals.

 

1. Flat breaker tool in the drilling rig and other equipment on the use

Flat breaker tool, on professional point of view, it is a rock drilling equipment, therefore, can be used in roadway engineering, if used in conjunction with equipment such as drilling rigs, then, is a good effect. However, if you want to install the drill rod on the device for use, then there is a certain installation steps, so should be in accordance with the provisions of the requirements to ensure that the correct installation.

 

2. Product performance of the basic requirements

(1) high toughness and wear resistance, and high rigidity and flexibility. In addition, the fatigue strength, but also have good performance.

(2) The fatigue crack growth rate, should have a very low rate, so that you can avoid affecting the life of flat breaker tool.

(3) to high temperature, and has good resistance to high temperature softening properties. In the anti-corrosion performance, but also very good, and, have a good anti-corrosion fatigue capacity.

 

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3. Rod intermediate frequency normalizing and carburizing process

Flat rod rod body is required for intermediate frequency normalizing, so, in the process of the process, there are certain requirements, is:

IF normalizing process temperature: 880 ℃ ± 20 ℃

Cooling method: air cooling or air cooling

After normalizing hardness: HRC36-38, its upper limit can not exceed HRC42

 

Flat breaker tool, if necessary, can also be carburized to improve the performance and use of drill rod effect. Therefore, it is related to the carburizing process of this process.

Carburizing process, the carburizing temperature is 920 ℃ -930 ℃ ± 10 ℃, or is 890 ℃ ± 10 ℃. In the carburized layer thickness, it is generally controlled within the range of 0.6 to 0.9 mm. In addition, the carbon content of the surface carburized layer should be controlled within the range of 0.8% -0.85%, and can not exceed 0.95%.