Similar to other metal parts, fastener failures include overload, corrosion-related cracking, embrittlement, creep and fatigue. Due to external loads, fastener overload may occur during installation or use.
The investigation of fastener overload failure should include the evaluation of material performance, the main purpose is to determine the cause of fastener damage, such as the strength of the fastener and the load imposed on the fastener.
Stress corrosion cracking or hydrogen embrittlement, which is common in some metals, is also an important failure mode for fasteners when they are subjected to static tension during service.
In view of the expected stresses of fasteners, materials and environments must be carefully considered to appropriately mitigate stress corrosion cracking or hydrogen embrittlement.
During the electroplating process, hydrogen is likely to diffuse into the fastener, causing hydrogen embrittlement. In order to reduce hydrogen embrittlement of susceptible materials, fasteners must be treated with hydrogen removal.
Fatigue is the most common form of fracture in metal structures, accounting for 80% of fractures. Fasteners are no exception. Fatigue is also the most common cause of fracture.
When the cyclic load exceeds the fatigue strength of the material, when it is loaded for a sufficient period of time, fatigue cracks will initiate and propagate on the fastener. Fastener material, geometry, stress amplitude, average stress and assembly parameters all affect fatigue performance.
The fastener assembly process is the most important, but it is often overlooked when analyzing the cause of its fracture. It is also the main source of fastener fatigue fracture.
Metal Packaging Has An Irreplaceable Position in The Packaging Industry With Its Excellent Performance And Superior Texture.July 1, 2022Metal packaging has an irreplaceable position in the packaging industry with its outstanding performance and superior texture.Timeshare safety: Metal packaging shows good stability, with high strength...view
Zhang Lifeng: Revitalizing Waste Steel DrumsJune 30, 2022How will iron drums and plastic drums containing industrial raw materials and chemical agents be handled? In the past, such waste barrels were generally no longer reused, which not only caused waste, ...view
Indonesia Proposes To Impose Anti-dumping Duty On Chinese Alloy Hot Rolled CoilJuly 1, 2022Indonesia's Anti-Dumping Committee(KADI) has proposed that final anti-dumping duties of 7.2%-50.2% be levied on alloy-added hot rolled coil originating from China. This recommendation will now be ...view
China Independent Brand ExpoJuly 1, 2022During the exhibition, CNPC was invited to participate in the "Chinese Enterprise Brand Building Sub-Forum" by the State-owned Assets Supervision and Administration Commission."Lubricat...view
Differences between Plastic Drum Cap Seals and Common Drum Cap SealsFebruary 5, 2024If you work in a variety of industries, you are most likely familiar with drum cap seals. These small yet crucial components are used to ensure the security and integrity of drum contents during stora...viewMarket Demand Analysis And Raw Material Selection For Steel Drum PackagingJuly 1, 2022The barrel-making materials must meet the following requirements:(1) The barrel-making needs to use high-quality low-carbon steel, the material must have good plasticity and deformation stability, and...view
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
