Tus lej Code of Strength Qib
Cov lej-xws li 4.8 thiab 8.8-pom nyob rau hauv cov khoom siv fasteners tsis yog random codes; es, lawv qhia cov ntaub ntawv tseem ceeb txog cov yam ntxwv ntawm kev ua haujlwm. Siv cov qhab nia sib xws ua piv txwv:
- Tus lej (s) ua ntej tus lej lej sawv cev ib - pua (1/100) ntawm lub zog tensile (hauv MPa).
- Tus lej (s) tom qab tus lej lej qhia tias lub zog tawm los raws li feem pua ntawm lub zog tensile.
- Nrog rau txhua kauj ruam hauv qib, lub load-cov kabmob muaj peev xwm nce ntau dua 50%.
Golden Balance hauv Kev Xaiv
Kev xaiv kom raug yuav tsum muaj kev sib npaug ntawm kev nyab xeeb thiab tus nqi -kev ua tau zoo:
- Static Load Scenarios: Thaum xaiv cov qib, qhov kev nyab xeeb ntawm 20% feem ntau txaus.
- Dynamic Load Ib puag ncig: Kev qaug zog yuav tsum tau muab rau hauv tus account; nws raug pom zoo kom xaiv qib ib lossis ob theem siab dua.
- Kev Tshaj Tawm Tshwj Xeeb: Hauv ib puag ncig corrosive, yuav tsum muaj qhov tseem ceeb rau cov khoom muaj pes tsawg leeg es tsis yog tsuas yog nce qib qib.
Yooj yim Overlooked Cov Yam Tseem Ceeb
Txawm hais tias qhov qhab nia raug raug xaiv, cov xwm txheej no tseem tuaj yeem cuam tshuam tag nrho kev ua tau zoo:
- Lub hardness ntawm lub tshuab ntxhua khaub ncaws yuav tsum sib phim rau qib bolt.
- Tightening torque yuav tsum tau kho kom nruj raws li qib tshwj xeeb.
- Rov ua dua thiab disassembly tuaj yeem txo qhov ntsuas qib tiag tiag.
- Qhov kub thiab txias hloov pauv tuaj yeem hloov cov yam ntxwv ua haujlwm qub.