Why Do Hose Ruptures Occur During Crimping Machine Operation?

Incorrect setting of crimping machine parameters is a primary cause of hose ruptures. Parameters such as pressure and die size must be precisely adjusted according to the hose’s specifications and model. If the pressure is set too high, exceeding the hose’s tolerance limit, it can directly cause the hose to rupture during crimping. For example, mistakenly using high-pressure parameters for crimping ordinary rubber hoses often leads to instant bursts.
Additionally, mismatched die sizes can also cause issues. If the die is too small, it applies uneven external force to the hose during crimping, causing excessive local stress and eventual rupture. Conversely, if the die is too large, it may fail to provide sufficient crimping force, resulting in loose connections that cause the hose to rupture under operational stress.

Unstandardized operation procedures are another key factor in hose ruptures. Operators who fail to conduct thorough pre - crimping inspections may miss defects such as cracks or scratches on the hose surface. These vulnerable areas are highly prone to rupturing during crimping.
Improper positioning of the hose in the die—such as not centering it symmetrically—leads to uneven force distribution during crimping, increasing the risk of rupture. Furthermore, operators who do not follow the specified speed and sequence (e.g., applying pressure too rapidly) can subject the hose to sudden 冲击 (shock), significantly raising the likelihood of failure.

Hose quality itself cannot be overlooked. Inferior hoses often have defects in raw material selection and manufacturing processes, resulting in insufficient strength and toughness to withstand crimping and operational demands. Some hoses may use substandard rubber materials or undergo inadequate vulcanization, compromising their physical properties. Such hoses are prone to rupture even under normal crimping parameters.
Moreover, improper storage conditions—such as prolonged exposure to high temperatures or humidity—accelerate hose aging, degrade performance, and make them more susceptible to rupturing during crimping.

External environmental variables can indirectly contribute to hose failures. For instance, crimping operations in extreme temperature environments may alter the hose’s material elasticity, making it brittle or overly soft. Vibration during crimping, if not properly controlled, can also cause micro - displacements in the hose, leading to hidden damage that manifests as ruptures.

From a mechanical perspective, wear and tear on crimping machine components (e.g., loose dies or damaged pressure gauges) can introduce unpredictable force variations. Regular maintenance and calibration of equipment are essential to prevent such issues.

Hose ruptures during crimping are typically caused by a combination of factors, including equipment parameter errors, operational non - compliance, and hose quality defects. To mitigate these risks, industries must prioritize precise parameter adjustment, standardized operation training, and strict quality control of hoses and equipment. By addressing these root causes and implementing targeted preventive measures, companies can significantly reduce the incidence of hose ruptures, ensuring reliable crimping results and uninterrupted industrial operations.