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.
The Importance of Drum Crimpers in Shipping and LogisticsJanuary 18, 2024In today's fast-paced world, the shipping and logistics industry holds immense significance in facilitating global trade. One pivotal component that ensures the safe transportation of goods is dru...viewBasic Classification and Introduction of Waterproof CoversNovember 10, 2023This is the bucket cover seal from Chongyi Industries, also known as waterproof cover.First of all, thank you for reading today's tweet. Today's featured product is mainly the bucket cover sea...viewDrum fittings must be compatibleMay 19, 2023Many factors must be considered when selecting new steel drum fittings for shipping hazardous and non-hazardous goods packaging. One important reason for this is that drum producers must carefully con...viewNotice On The Key Work Of Brand Construction In The Packaging Industry In 2021-2July 1, 2022II. Continue to compile the Brand Development Report of China Packaging IndustryOrganize a team of experts to conduct in-depth research, further summarize the development trend, main results, innovati...view
Why Do Steel Drum Bung Use R-Type Plug Barrel?April 10, 2023Standard steel barrels have a plug barrel made of steel. A gasket is designed at the cylindrical neck of the plug, just under the edge. Due to these designs, when the plug is tightened, the gasket may...view
The Fourth Session Of The Standing Council Of China Packaging Federation Was Successfully Held in ShanghaiJuly 1, 2022On July 13, 2021, China packaging federation ninth session of the standing council four times in Shanghai, China packaging federation President li hua, vice President and secretary general Wang Yue me...view
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
