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.
Various Kinds Of Drum Closure GasketsJuly 1, 202210. NR natural rubber sealing ringRubber products have good wear resistance, elasticity, tensile strength and elongation.But in the air is easy to aging, hot sticky, easy to expand and dissolve in min...view
Use of Steel Drum EnclosureJanuary 3, 2024After filling the steel drum, a closure device must be installed on the top of the drum to isolate the contents from the external environment, preventing leakage or reactions with the surroundings.For...view
Talking About The Future Development Trend Of Transportation PackagingJuly 1, 2022Although, fast development of logistics industry in China, the total transportation rise year by year, but due to the packaging design technology in China starts late, not form a complete knowledge sy...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
SMS Believes Investment in US And Indian Steel Mills Will ContinueJuly 1, 2022Plant builder SMS group anticipates the political framework in the USA and India will keep facilitating investment in metallurgical plants."Many customers are currently reviving projects that had...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
EN
ko 
fr 
de 
es 
it 
ru 
pt 
ar 
vi 
th 
