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 33rd Dow Packaging Innovation Competition Comes AgainJune 30, 2022Want to know more about the latest trends in the packaging industry? Want to create a broader platform for your team? Want to compete and collide with global packaging masters? Want to have closer com...view
New Product Launch NoticeJune 30, 2022Our company has recently launched some new products of steel drum packaging tools and small capacity containers. Currently, the main newly launched products are Plastic liner and Tin Pail.Plastic Line...view
How Much You Know About The Drum Closure Dimension?July 1, 2022Product introductionEmbedded flange closure system, in accordance with international standard: BS EN ISO 15750-3:20081. scopeThis standard specifies in detail the structural characteristics, dimension...view
Shelf Life Of Steel DrumJuly 1, 2022The storage life of steel drums is largely determined by factors beyond the control of the drum manufacturer. Because after the completion of steel drum manufacturing, packaging steel drum is almost i...view
Kinds Of Drum Closure Gasket2July 1, 20224. Viton fluorine rubber sealing ringHigh temperature resistance is better than silicone rubber, has excellent weather resistance, ozone resistance and chemical resistance, cold resistance is bad.It i...view
Application Of 200-210L Open Steel Drum Plastic LinerJune 30, 2022The round bottom lining bag is the lining bag of 200L round steel barrel independently developed according to the round welding technology. There is no need to clean and open the lid in the barrel, th...view
EN
