Torque Coefficient, Preload Control Accuracy, thiab Compatibility xaiv ntawm Fastening Systems

Feb 09, 2026 Tso lus

Torque Coefficient, Preload Control Accuracy, thiab Compatibility xaiv ntawm Fastening Systems

 

Vim li cas qhov kev sib txawv ntawm qhov ua ntej yuav dhau 15% thaum qhov sib txawv ntawm qhov sib txawv ntawm qhov ceev tshaj 0.05?

Cov mis laij lej ntawm lub torque coefficient K yog K=P / (πdμ), qhov twg μ yog qhov sib txhuam coefficient, thiab qhov hloov pauv yuav cuam tshuam ncaj qha rau tus nqi K. Thaum K qhov hloov pauv siab tshaj 0.05, lub ntsia liaj qhov rooj preload yuav muaj qhov sib txawv tseem ceeb nyob rau hauv tib lub zog nruj. Piv txwv li, yog hais tias lub torque coefficient hloov ntawm 0.18 mus rau 0.23, lub preload sib txawv tuaj yeem ncav cuag 18%. Tsis txaus preload yuav ua rau cov elastic clips thiab bolts tsis tuaj yeem kaw lub tsheb ciav hlau zoo, ua rau xoob hauv tsheb ciav hlau kev co; ntau preload yuav dhau lub zog ntawm cov khoom siv, ua rau bolt puas. Yog li ntawd, torque coefficient yuav tsum tau tswj nyob rau hauv ± 0.02 los xyuas kom meej qhov preload raug.

 

kpo-rail-fastening-system-2

 

Vim li cas lub torque coefficient ntawm kub -dip galvanized bolts 0.03-0.05 siab dua li ntawm blackened bolts?

Qhov saum npoo zinc txheej thickness ntawm kub -dip galvanized bolts ncav cuag 60-80μm, qhov roughness ntawm cov xov sib cuag saum npoo yog siab dua, thiab kev sib txhuam coefficient μ loj dua. Raws li cov qauv torque coefficient, qhov nce hauv μ ua rau tus nqi siab dua K, yog li lub zog torque coefficient ntawm kub -dip galvanized bolts feem ntau yog 0.22-0.25. Qhov saum npoo ntawm blackened bolts yog du, nrog tsawg roughness thiab me me kev sib txhuam coefficient, yog li lub torque coefficient tsuas yog 0.18-0.20. Qhov sib txawv ntawm torque coefficient ntawm ob yuav ua rau lub preload ntawm kub-dip galvanized bolts yog 15% -20% qis dua nyob rau hauv tib lub torque. Thaum xaiv cov qauv, qhov nruj torque tsis yuav tsum tau hloov kho raws li txoj kev kho saum npoo kom tsis txhob muaj qhov sib txawv ntawm qhov sib txawv.

 

e-clip-fastening-system02181

 

Vim li cas siab - kab nrawm nrawm yuav tsum muaj qhov tseeb ntawm qhov tseeb ntawm ± 0.01 es tsis txhob ± 0.03 rau cov kab zoo tib yam?

Lub tsheb ciav hlau ceev ntawm siab - cov kab nrawm nrawm, thiab qhov zaus ntawm lub log- tsheb ciav hlau hloov pauv yog qhov siab, yog li qhov yuav tsum tau ua rau qhov tseeb preload yog siab heev. Thaum lub torque coefficient raug yog ± 0.01, lub preload sib txawv tuaj yeem tswj tau nyob rau hauv 5%, uas tuaj yeem ua kom lub sijhawm ntev - ruaj khov ntawm elastic clips thiab bolts. Cov kab ib txwm muaj tsawg zaus thauj khoom, thiab qhov sib txawv ntawm qhov ua ntej hauv ± 10% tuaj yeem ua tau raws li kev siv. Yog hais tias qhov zoo tib yam precision torque coefficient tswj tau txais rau siab - cov kab ceev, qhov kev hloov pauv ua ntej yuav dhau 15%, uas yooj yim ua rau kev hloov pauv ntawm txoj kev tsheb ciav hlau thiab cuam tshuam kev nyab xeeb ntawm kev tsav tsheb. Yog li ntawd, siab - cov kab ceev yuav tsum tau xaiv cov tshuab fastening nrog siab -precision torque coefficients.

 

Rail Fastener

 

Vim li cas qhov cuam tshuam ntawm lub xeev lubrication ntawm lub torque coefficient ntawm lub fastening system yog qhov tseem ceeb nyob rau hauv hnyav -haul kab?

Lub preload borne los ntawm bolts nyob rau hauv hnyav- cov kab tsheb loj yog loj, thiab lub siab ntawm cov xov sib cuag nto yog siab. Lub viscosity thiab thickness ntawm lubricating roj yuav ncaj qha cuam tshuam rau kev sib txhuam coefficient. Thaum lubrication tsis txaus, muaj kev sib txhuam qhuav ntawm cov xov, thiab kev sib txhuam coefficient μ tuaj yeem ncav cuag 0.18-0.22, ua rau lub siab torque coefficient K; Thaum lubrication ntau dhau, roj ntau dhau, ua rau kev sib txhuam coefficient μ poob mus rau 0.12-0.15, thiab K tus nqi qis. Qhov sib txawv ntawm qhov sib txawv ntawm cov kab hnyav hnyav yog qhov loj, thiab kev hloov pauv hauv lub xeev lubrication yuav ua rau K tus nqi hloov pauv ntau dua 0.08, thiab qhov sib txawv ua ntej tuaj yeem ncav cuag ntau dua 25%. Lub preload ntawm cov kab zoo tib yam yog me me, yog li lub xeev lubrication muaj kev cuam tshuam me ntsis ntawm tus nqi K, thiab qhov kev hloov pauv feem ntau tsis tshaj 0.03.

 

Yuav ua li cas calibrate lub torque coefficient ntawm fastening system nyob rau hauv lub site kom paub meej preload tswj qhov tseeb?

Ntawm - site calibration yuav tsum muaj kev koom tes ntawm lub torque ciaj ntswj thiab lub ntsuas qhov nro. Xaiv peb lub iav txoj haujlwm: 10%, 50%, thiab 90% ntawm cov ntsuas torque rau kev sim. Ua ntej, zawm lub ntsia liaj qhov rooj rau lub hom phiaj torque, tom qab ntawd siv lub ntsuas qhov nro los ntsuas qhov tseeb preload, thiab xam cov torque coefficient K=P / (πdμ). Yog tias tus nqi K siab tshaj qhov tsim ntau yam los ntawm ± 0.02, yuav tsum tau kho qhov kev sib tw torque. At the same time, it is necessary to regularly detect the thread surface treatment state and lubrication condition, replace the failed lubricating grease, and clean the thread impurities. Los ntawm dynamic calibration thiab lub xeev kev saib xyuas, torque coefficient raug tswj tau nyob rau hauv ± 0.01, ua tau raws li cov kev xav tau ntawm high -qib kab.