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Blunt drill shank material requirements and the basic requirements of the solder tail heat treatment
- Nov 15, 2017 -

In the shank, the type of blunt shank, which is also a specific category we all want to be familiar with and understood because it is more common and commonly used, is mainly used in crushing operations. Then, with regard to this kind of drill rod, next, we will continue to learn and understand, and proceed from its basic aspects.

 

1. The basic requirements of the Blunt drill shank material

(1) good wear resistance and heat resistance

If the use of Blunt drill shank for high-intensity operation, then, in this case, is required to have good anti-wear drill rod performance, due to high-intensity operation, there will be a temperature increase, so the requirements Rod has a good high temperature performance, so as to normal use, to avoid some failure problems.

(2) to improve work efficiency

The materials used for the bored rod are heat-treated so that their wear resistance and fatigue resistance can be effectively improved, allowing the products to adapt to different operating environments and to meet different operating requirements.

(3) can be durable

Since the upper end of the Blunt drill shank to withstand a great blow, and the lower end to have a high hardness, so the toughness of the shank, to be very good, otherwise it will shorten its service life. Therefore, it is required to be durable so as to ensure and prolong the service life of the blunt drill rod.

 

10 CATERPILLAR MTB FRUKAWA NPK TOKU 钝型钎杆2.jpg


2 product quality judgments

The quality of Blunt drill shank to judge the quality of products, one is that the field can be carried out drilling tests, but it is a certain relativity, is to be in the same big point, with a machine, and the same operation Under the level of the data obtained, only comparability. Moreover, the original data obtained from the experiment, but also for statistical processing, so as to be compared, and to ensure its reliability.

Second, it is carried out indoors, using the solder rod life test device. However, the data it obtains are relative and therefore can only be used as a basis for preliminary screening of brazing or heat treatment processes.

 

3 blunt-type solder rod solder tail heat treatment

The main purpose of the brazing end of the Blunt drill shank is to ensure that the brazing tips do not encounter the problems of pile tops or tops under the high-frequency impact of the pistons. Therefore, in the solder shank hardness, in general, is to be controlled in the HRC50-54 this range, because it is more appropriate.