On construction sites, there are always some seeminglyordinary components that silently shoulder the heavyresponsibility of safeguarding the lifeline. when the steelcomponents lifted by the tower crane are precisely aligned atthe "'millimeter leve!" in the air, when the scaffolding is woveninto a stable grid at a hundred-meter height, and when thebridge formwork withstands the tremendous pressure duringconcrete pouring -these crucial moments' "zero mistakes" allrely on a key component: the integral forging fastener.

As the "nerve endings" ofthe building connection system,traditional fasteners often become safety weaknesses due totechnological limitations. Today, l will take you to theconstmuction site to decode this core component that hasredefined the standard of engineering connection. Let's seehow it transfoms from "usable" to "reliable", and how itbecomes the invisible guardian of architectural safety in thenew era.

Four Core Scenarios: How Forged Fasteners RewriteEngineering Safety Rules?

1. Super-tall steel structure: Weaving a safety net in the "clouds'

In the construction of400-meter-plus landmarks such as theShanghai Tower and the Ping An Finance Center in Shenzhen, theconnection of steel structure corridors is like an "aviation surgery"Traditional cast connecting pieces often suffer from defects such aspores and shrinkage porosity, which can lead to fatigue cracking inhigh-stress areas. However, the integrated forging connectingpieces, through a three-dimensional integrated forging process.have increased the tensile strength to 850 MPa (40% higher thantraditional pieces), successfully withstanding the 14th-evel windforce during the typhoon season and 3 million fatigue vibrations.Monitoring in a certain project shows that the steel trss nodesusing forged connecting pieces have a displacement of only 1/5 ofthe design value under extreme weather conditions, equivalent toequipping the building's skeleton with "earthquake insurance"

2. Prefabricated Buildings: Unraveling the "Millimeter-level" Assembly Code

In a prefabricated hospital project of the Beijing Sub-City Centerthe accuracy of the assembly of32,000 prefabricatedcomponents directly determines the structural safety. Traditionalfasteners often cause leakage of mortar at the joints ofPCboards and result in tilted components due to the deviation of thearc shape ofthe clamping area exceeding 1mm. However, theforged fasteners, with the precision die forging technology (arcshape error ≤ 0.2mm) and in combination with BlM pre-assemblydata, achieve precise connection like "building a tall building byassembling Lego blocks". The actual measurement data showsthat the verticality deviation of the floors using forged fasteners iscontrolled within 1.2mm per layer, which is 60% higher than thetraditional process, completely eliminating the rough impressionof "prefabrication = assembling with building blocks".

3. Engineering in Harsh Environments: Guarding Life at All Times

In the tunnel support of the Sichuan-Tibet Railway and thefoundation construction of coastal cross-sea bridges, thefasteners are subjected to multiple challenges such as highhumidity corrosion, low-temperature freeze-thaw, and strongseismic impact. The fine-grained strengthening structure formedby the forging process (with grain size reaching ASTM level 10)enhances the rust resistance of the fasteners by five times. andthe impact toughness at -40'c remains above 80J (whiletraditional parts fall below 30J). Records from a certain offshorewind power foundation construction project show that afterexperiencing a 12-level typhoon and salt spray erosion for 300days, the foundation of the wind turbine tower connected by theforaed fasteners remained zero deformation, becoming anunbroken connection" under extreme conditions.

4.Installation of Large Equipment: Strengthening the "Bones" ofIndustrial infrastructure

Installation of Large Equipment: Strengthening the "Bones" ofIndustrial Pillars
In the fixation of the tracks of -evel cranes and the installationof pipeline supports in nuclear power plants, the fasteners need towithstand both shear force and pull force simultaneously. Theunique stress dispersion structure of the integrated foredfasteners reduces the stress concentration coefident around thebolt holes by 65%,and the single-point load-bearing capacity canreach 25 tons (traditional parts only 15 tons). Data from apetrochemical project shows that the compressor foundation usingforged fasteners has a settlement of only 2mm after 8, 000 hoursof equipment operation, which is far better than the industrystandard (s5mm). lt has installed a "stabilizer" for industrialproduction lines.

The three major flaws of traditional castings have beensolved precisely by the forging process. How?

More importantly, the forgingprocess has broken the traditionalparadox of "strength -toughness"through isothermal forging andpost-heat treatment technologywhile enhancing the tensilestrength, it also controls theelongation rate to 18%(comparedto only 8% in traditional pieces),achieving a mechanicalperformance balance of "strengthand flexibility" - this is preciselythe core advantage in resistingsudden loads in complexengineering scenarios.