In the field of engineering construction, water well drilling rigs serve as crucial equipment, and their performance and service life directly affect project progress and costs. After leaving the factory, water well drilling rigs are generally required to undergo a running-in period of approximately 60 hours. This standard is set by manufacturing plants based on the technical characteristics of engineering drilling rigs during the initial use stage. The running-in period plays a vital role in ensuring the normal operation of water well drilling rigs, reducing failure rates, and extending their service life. It is a key phase after the equipment is put into use. Next, we will delve into the characteristics and maintenance key points of water well drilling rigs during the running-in period to help users better operate and maintain the equipment.

I. Remarkable Characteristics of Water Well Drilling Rigs During the Running-in Period

1. Components are Prone to Loosening

Newly processed and assembled components of water well drilling rigs inevitably have deviations in geometric shape and matching dimensions. In the initial use stage, the equipment is subjected to alternating loads such as impacts and vibrations, as well as factors like heat and deformation. Coupled with the relatively fast initial wear rate, these circumstances can easily cause the originally tightened components to loosen. For example, in some actual cases, after a newly installed drilling rig has been running for 20 - 30 hours, some connecting bolts loosened. If not discovered and dealt with in a timely manner, it may lead to more serious mechanical problems.

2. Wear Rate is Far Higher than the Normal Level

Restricted by factors such as the machining accuracy, assembly process, and adjustment of new machine components, the friction surfaces of water well drilling rigs are relatively rough, the contact area of the mating surfaces is small, and the surface pressure-bearing conditions are uneven. During the operation of the equipment, the uneven parts of the component surfaces rub against each other, and the metal debris that falls off acts as an abrasive, further intensifying the wear of the component mating surfaces. According to professional statistics, the wear rate of water well drilling rigs during the running-in period is about 3 - 5 times that of the normal use period. At this time, if the equipment is overloaded, it is very likely to cause component damage, trigger early failures, and seriously affect the service life of the equipment.

3. Leakage Phenomena are Frequent

Affected by factors such as component loosening, vibration, and machine heating, the sealing surfaces and pipe joints of water well drilling rigs are prone to leakage. In addition, some casting and machining defects that are difficult to detect during assembly and debugging will gradually be exposed during the equipment operation process due to the effects of vibration and impact, manifested as oil or water leakage. Some users have reported that during the running-in period of a newly purchased water well drilling rig, the coolant leaked due to the quality problem of the sealing rubber ring, which not only wasted resources but also might interfere with the normal operation of the equipment.

4. Higher Probability of Operational Errors

Especially for new operators, due to insufficient understanding of the structure and performance of water well drilling rigs, it is very easy to cause failures due to operational errors during the operation process, and may even lead to mechanical accidents. According to incomplete statistics, about 30% of equipment failures during the running-in period are caused by improper operation. For instance, incorrectly adjusting the drilling pressure may lead to excessive wear of the drill bit or breakage of the drill pipe; failing to start the equipment's lubrication system correctly will cause dry friction of components, thereby causing serious damage.

5. Poor Lubrication Effect

The mating clearances of newly produced components of water well drilling rigs are relatively small, and due to reasons such as the assembly process, it is difficult to ensure the uniformity of the mating clearances. This makes it difficult for lubricating oil (grease) to form a uniform oil film on the friction surfaces, unable to effectively prevent wear, thus reducing the lubrication efficiency and causing early abnormal wear of components. In extreme cases, it may also cause scratches or seizures on the friction surfaces of precision fits, ultimately triggering equipment failures.

The maintenance of water well drilling rigs during the running-in period is of great importance. If you need water well drilling rigs or want to learn more about them, please leave us a message. Let's explore the knowledge of water well drilling rigs together.