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Special Headed Bolt YZP tells what are the reasons for the failure of the HEX Head Cap Screw?

(Summary description)HEX Head Cap Screw is actually called in many ways, for example, it can be called an external hexagonal bolt, for example, it can be called an external hexagonal screw. It can also be called a hexagonal bolt. It all means the same thing. It's just that the personal name is different.

Special Headed Bolt YZP tells what are the reasons for the failure of the HEX Head Cap Screw?

(Summary description)HEX Head Cap Screw is actually called in many ways, for example, it can be called an external hexagonal bolt, for example, it can be called an external hexagonal screw. It can also be called a hexagonal bolt. It all means the same thing. It's just that the personal name is different.

HEX Head Cap Screw, in fact, has many names, for example, it can be called an external hexagonal bolt, for example, it can be called an external hexagonal screw. It can also be called a hexagonal bolt. It all means the same thing. It's just that the personal name is different. So do you know what causes it to malfunction? Let’s follow the Special Headed Bolt YZP editor to have a brief look at it!
1. When assembling, the tightening torque is too large and the force is uneven. Since there is no strict torque wrench in the assembly, the specific tightening torque is not well understood, and the tighter the better. A longer afterburner is used to fasten the connecting rod screw. The tightening torque is too large, which exceeds the yield limit of the screw material, causing it to yield and deform, causing it to break due to excessive elongation under the action of impact load. It should be emphasized that the Guangding must be tightened according to the standard. It must not be considered that the tighter and the greater the strength, the better.
2. The connecting rod of the diesel engine is divided into multiple levels. During the maintenance, it should be noted that the connecting rod of different levels cannot be replaced. If the connecting rod cover is not carefully messed up or installed incorrectly during maintenance, it will cause the coupling surface of the connecting rod big end to not fit tightly, and cause the connecting rod cover to loosen and cause breakage during engine operation. The big end of the connecting rod of WD615 series diesel engine is of the oblique cut type with a 45° bevel angle. The connecting surface of the connecting rod cover and the big end of the connecting rod adopts a 60° sawtooth positioning structure. This structure has a tight fit, accurate positioning, reliable, and compact structure. specialty. If the connecting rod cover is messed up or installed incorrectly during maintenance, it will inevitably lead to poor positioning of the serrations on the joint surface, which will easily cause the connecting rod cover to loosen during the engine work, which may lead to breakage.
3. When the diesel engine is running, it has a runaway fault or a fault that the piston burns to death in the cylinder, and it is pulled off. If the engine has had a runaway failure during use, the engine should be thoroughly inspected and it is recommended to replace it. If a certain cylinder has serious cylinder pull during operation, it should also be replaced when replacing the cylinder piston assembly.
The above is the Special Headed Bolt YZP editor introducing the related knowledge of the causes of the HEX Head Cap Screw failure. I hope you can learn more.

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