Thrust Rod Fracture Analysis

Pushing Rod Fracture Analysis

Fracture analysis is the process of studying and analyzing a fracture by looking at its properties, such as its shape, size, material composition, and the manner in which it was generated. The aim of fracture analysis is to collect information that can be used to identify, diagnose and assess damage, or to understand the cause of the fracture or its likely history. The process of fracture analysis is undertaken in order to make a judgment on the most appropriate intervention based on the knowledge gathered during the failure analysis process.

Pushing rods are rods used for mechanical purposes such as transmitting force, pushing, compressing, and connecting. They are usually made of steel and are typically either flat or round in design, and may be connected with nuts, bolts, or other fasteners. Pushing rods can be used in applications ranging from automotive and industrial machinery to power generation and medical equipment.

There are several failure modes associated with pushing rods. These can occur due to material defects, such as corrosion and fatigue, as well as design flaws or installation errors. The most common failure mode for pushing rods is fracture. Fracture can occur along any of the axes associated with pushing rods. It is important to analyze the specific properties of the fracture in order to determine the cause of the fracture.

For example, a fracture along the longitudinal axis is an indication that fatigue was the source of the fracture. This type of fracture will appear as a crack on the surface of the rod that appears to run from one end to the other. Alternatively, if the fracture is along the shear axis, then it is likely that the rod has been subject to excessive shear stress which has caused it to fail.

The fracture surface itself can also provide valuable information about the fracture. The presence of any residual white etching along the fracture surface can indicate the presence of a stress-induced fatigue fracture. Also, the presence of curved features on the fracture surface can indicate the presence of a dynamic failure. Additionally, the presence of any foreign material on the fracture surface can suggest contamination or other environmental issues.

In addition to analyzing the fracture surface, it is also important to examine the material composition, the state of the threads, and the manner in which the rod was assembled. For example, examining the threads can reveal the presence of any corrosion damage or evidence of any irregularities which may suggest improper installation or incorrect torque settings. It is also important to examine the type of metal used in the rod in order to identify any potential sources of contamination or weakness.

The investigation of a pushing rod fracture is a complex procedure and has to be undertaken by experienced failure analysts in order to ensure accurate and reliable results. This can involve a combination of visual inspection, laboratory testing and photo-elasticity mapping. Once the fracture has been identified, a suitable solution must be implemented to prevent similar failures in the future.

Fracture analysis of pushing rods is an essential part of maintaining reliable and safe operation of machinery. It can help identify potential problems before they occur and ensure that any recommendations or solutions implemented are based on sound analysis of the evidence. Ultimately, this knowledge can help reduce downtime, improve safety and ensure reliable operation of the equipment into the future.

The analysis of broken thrust rod is very important in the effective operation of the lifting mechanism of the lifting equipment. Broken thrust rod is one of the more common accidents of lifting equipment in recent years. When the lifting power of the lifting device is too great, it will lead to deformation, broken or other types of machining accuracy failure of the thrust rod, which will affect the operation accuracy of the lifting device.

In order to accurately understand the cause of thrust rod break, first of all, it is necessary to do the following:

1.Morphological feature analysis: According to the broken overall shape of the thrust rod, a force simulation is carried out to judge whether the thrust rod is broken or sheared.

2. Material analysis: Determine whether the material of the thrust rod conforms to the design requirements.

3. Metallographic analysis: By using metallographic microscope to observe the entirety of the broken cross-section, the broken mechanism can be preliminarily judged.

4. Hardness test: According to the manufacturing process of the thrust rod, the hardness test is carried out to determine whether there is a problem of inadequate strength or imbalanced alloying treatment in the original material of the thrust rod.

5. Chemical composition analysis: analysis by chemical composition to determine whether the chemical composition of the thrust rod material reaches the design requirements.

6. Dimension measurement: Compare the parameters and size of the broken part with the design requirements.

7. Stress analysis: Through stress calculation, it can be judged whether the thrust rod is caused by overload and cracking, or whether the thrust rod breaks due to design insufficient strength.

Through the above steps, we can find out the cause and point out the corresponding improvement measures, so as to ensure the safe operation of the lifting device and ensure the safe operation of the staff.