Threaded rods

Koj pom lawv txhua qhov chaw thaum koj pib saib - hauv kev tsim kho, tshuab, txawm tias DIY rooj tog. Threaded rods. Cov neeg feem coob, txawm tias qee tus hauv kev lag luam, xav txog lawv tsuas yog cov bolts ntev xwb. Qhov ntawd yog thawj qhov yuam kev. Lawv yog cov tseem ceeb, tab sis lawv daim ntawv thov yog dab tsi tab sis yooj yim. Dab ntxwg nyoog yog nyob rau hauv cov ntsiab lus: cov khoom qib, hom xov, txheej, thiab sheer, unforgiving physics ntawm nro thiab shear. Kuv tau pom tej yaam num uas qhov kev xaiv tsis ncaj ncees lawm ntawm no los ua ib qho kev ua tsis tiav, tsis yog qhov zoo nkauj actuator lossis cov nqaj hlau kim.

Khoom siv thiab qib: Nws tsis yog hlau xwb

Pib nrog lub hauv paus, cov khoom siv yog txhua yam. A36 me me steel pas nrig yog qhov zoo rau dai cov yeeb nkab lossis khi tsis tseem ceeb. Tab sis lub sij hawm koj qhia dynamic load, vibration, los yog corrosive ib puag ncig, koj nyob rau hauv ib tug txawv ntiaj teb no. Kuv default rau threaded rods ua los ntawm ASTM A193 B7 lossis B8 cov khoom siv rau feem ntau cov ntawv thov kev lag luam. B7 yog hlau alloy, quenched thiab tempered, muab siab tensile lub zog - xav tias siab hlab khi pas nrig los yog hnyav structural anchoring. B8 yog qhov txawv txav, feem ntau 304 lossis 316, rau cov nroj tsuag tshuaj lossis ua zaub mov. Qhov sib txawv ntawm tus nqi yog qhov tseem ceeb, tab sis yog li qhov tshwm sim ntawm kev ua tsis tiav.

Kuv nco qab ib txoj hauj lwm retrofit ntawm ib tug ntug dej hiav txwv ua chav tsev. Cov spec hu rau galvanized carbon steel rods rau kev txuag nqi. Tsis pub dhau 18 lub hlis, chloride-induced stress corrosion cracking pib tshwm. Peb yuav tsum ua qhov kev hloov pauv tag nrho nrog 316 stainless. Thawj qhov kev txuag nyiaj raug nqi kaum npaug hauv kev ua haujlwm kub ntxhov thiab poob qis. Nov yog ib zaj lus qhia uas koj tsis txhob hnov ​​qab. Cov txheej, kub-dip galvanizing piv rau cov neeg kho tshuab plating, kuj plays lub luag hauj lwm loj nyob rau hauv lub neej ntev, tsis yog tsuas yog tsos.

Tom qab ntawd muaj qhov ntsuas qib, lossis tsis muaj qhov ntawd. Ib tus neeg muag khoom muaj npe nrov yuav ua kom meej meej dov rau ntawm tus pas nrig. Rau siab zog threaded rods, koj tab tom nrhiav rau peb kab radial rau B7. Tsis muaj cim? Kho nws raws li qib qis thiab tsis txhob twv koj qhov project rau nws. Qhov no yog qhov uas nrhiav los ntawm cov chaw tsim khoom tshwj xeeb hauv cov chaw tsim khoom muaj zog ua rau kev nkag siab. Piv txwv li, ib lub tuam txhab xws li Handan Zitai Fastener Manufacturing Co., Ltd., raws li nyob rau hauv Yongnian - Tuam Tshoj tus loj tshaj plaws fastener puag - feem ntau muaj cov infrastructure los tswj qhov no los ntawm billet mus rau cov khoom tiav, uas tsis yog ib tug muab rau cov neeg lag luam.

Xov Sib Koom Tes thiab Voodoo ntawm Load Distribution

Ntawm no yog ib qho kev mob taub hau: ntau npaum li cas xov kev koom tes txaus? Phau ntawv teb yog 1.5 npaug ntawm txoj kab uas hla. Kev muaj tiag yog messier. Yog tias koj txuas rau hauv cov khoom muag muag xws li txhuas lossis casting, koj xav tau ntau dua. Lub load tsis nqa sib npaug ntawm txhua txoj xov; thawj ob peb txoj kev sib koom tes coj qhov brunt ntawm nws. Kuv twb xam cov kev koom tes xwb kom muaj ib tug teb tech hu kuv hais tias lub tapped lub stripped. Feem ntau, qhov teeb meem tsis yog kuv lej, tab sis qhov zoo ntawm lub qhov tapped - undersized, off-axis, los yog tag nrho ntawm chips.

Ib qho ua kom yuam kev rau qhov chaw muaj kev vibration siab: siv lub txiv ntoo jam. Tighten thawj txiv ntseej rau spec, ces zawm ib tug thib ob txiv ntseej tiv thaiv nws. Nws zoo li tsis tseem ceeb, tab sis nws tiv thaiv kom tsis txhob xoob los ntawm kev thauj khoom cyclic zoo dua li ntau cov khoom siv xauv zoo nkauj. Tsis tas li ntawd, ib txwm siv lub tshuab ntxhua khaub ncaws. Nws zoo li pom tseeb, tab sis kuv tau pom nws hla. Lub tshuab ntxhua khaub ncaws faib cov clamp load thiab tiv thaiv cov txiv ntoo los ntawm kev khawb rau hauv qhov chaw, uas ua rau txo qis lub zog clamping zoo.

Txiav xov vs. dov xov - lwm nuance. Rolled threads muaj zog dua vim hais tias cov nplej ntws ntawm cov hlau ua raws li daim ntawv xov, tsis txiav los ntawm nws. Rau txhua daim ntawv thov tseem ceeb, hais kom dov threads. Feem ntau koj tuaj yeem qhia los ntawm qhov smoother, hlawv tag thiab qhov loj me me ntawm txoj kab uas hla ntawm tus pas nrig kawg.

On-Site Realities thiab Sourcing Pragmatism

Hauv thaj teb, koj tsis tshua muaj tus pas nrig zoo meej hauv qhov ntev thiab xov. Koj txiav thiab xov ntawm qhov chaw. Ib tug zoo zoo tuag yog tsim nyog nws hnyav nyob rau hauv kub. Ib tug pheej yig yuav tsim ib tug sloppy thread uas cuam tshuam lub zog. Peb khaws cov txheej txheem kub ceev steel tuag thiab lub zog threader rau cov haujlwm uas yuav tsum tau muaj ntau tshaj li ob peb tus pas nrig. Rau cov hlau tsis muaj steel, mus qeeb, siv ntau cov roj txiav, lossis koj yuav ua haujlwm-nrhiav cov khoom siv thiab tuav cov tuag.

Kev muag khoom yog nws qhov kev sib tw. Koj xav tau kev sib xws hauv cov khoom siv kho tshuab thiab qhov tseeb qhov tseeb. Nws tsis yog khoom muag. Kuv tau ua hauj lwm nrog cov neeg muag khoom qhov twg tus pas nrig txoj kab uas hla yog nyob rau hauv siab, txo qhov kev ntxhov siab, los yog lub zog tensile nyob rau hauv qab ntawm cov qib. Qhov no yog vim li cas thiaj muaj txoj kab ncaj nraim mus rau qhov chaw tsim khoom, es tsis yog tus xa khoom xwb, ntxiv txheej ntawm kev ntseeg siab. Ib lub chaw tsim khoom nyob hauv pawg tsim khoom loj xws li Yongnian Cheeb Tsam, nrog rau nws cov txiaj ntsig kev thauj mus los yog nyob ib sab ntawm txoj kev tsheb ciav hlau loj thiab txoj kev sib txuas, feem ntau qhia txog kev tswj cov saw hlau zoo dua. Tshawb xyuas qhov chaw zoo li https://www.zitaifasteners.com ua rau koj paub txog lawv cov khoom lag luam thiab kev tshwj xeeb, uas yog qhov pib rau kev ntsuas lawv lub peev xwm rau qhov tshwj xeeb threaded rods xav tau, los ntawm standard carbon steel mus rau alloy qib.

Lub sij hawm ua ntej yog lwm yam. Rau tus qauv zinc-plated pas nrig, tej zaum ib lub lim tiam. Rau qhov ntev-ntev, siab-lub zog, kub-dip galvanized pas nrig nrog cov xov tshwj xeeb, koj yuav tau saib ntawm kev tsim khoom. Ib txwm ua rau qhov no. Kuv tau ncua cov haujlwm tos kom raug cov pas nrig tuaj txog, vim tias kev hloov pauv tsis yog qhov kev xaiv.

Txoj Cai Yooj Yim ntawm Kev Txhim Kho

Torque. Txhua leej txhua tus tham txog nws, ob peb siv nws kom raug. Lub torque yuav tsum tau ua kom tiav ib tug muab clamp load txawv wildly nrog lubrication. Ib txoj hlua lubricated (nrog los tiv thaiv los yog roj) tuaj yeem txo qhov xav tau torque los ntawm 30-40% piv rau cov xov qhuav. Yog tias koj tab tom ua raws li lub torque spec los ntawm phau ntawv qhia, xyuas seb nws puas xav tias qhuav los yog lubricated. Thov qhuav torque mus rau ib tug lubricated xov yuav yooj yim overstress thiab stretch tus pas nrig, ua rau tsis ua hauj lwm.

Kev sib tw yog qhov tseem ceeb. Yog hais tias tus pas nrig yog nyob rau hauv dabtsi yog khoov, nws muaj peev xwm plummets. Siv cov tshuab ntxhua khaub ncaws los yog cov txiv ntseej qib yog tias qhov chaw tsis sib luag. Ib zaug kuv tau tshawb xyuas qhov kev ua tsis tiav qhov twg 1-inch diameter pas nrig snapped. Kev so tau pom cov cim qaug zog classic. Qhov ua rau? Lub beam nws yog anchoring tau deflected me ntsis nyob rau hauv load, muab tus pas nrig rau hauv ib tug dabtsi yog khoov voj voog nws yeej tsis tau tsim rau. Qhov kho yog ib qho yooj yim spherical lub rooj ntxhua khaub ncaws, nqi pennies piv rau kev kho.

Tsis txhob hnov ​​qab txog kev tiv thaiv corrosion rau lub rooj sib txoos. Cov pas nrig tej zaum yuav stainless, tab sis li cas txog cov txiv ntoo thiab cov ntxhua khaub ncaws? Cov hlau tsis sib xws ua rau galvanic corrosion. Hauv qhov chaw ntub dej, siv cov txiv ntoo carbon steel ntawm tus pas nrig stainless tuaj yeem noj cov txiv ntoo kom nrawm nrawm. Muab cov ntaub ntawv los yog siv cov ntaub qhwv insulating.

Thaum Tej Yam Ua Tsis Taus: Kev Ntsuam Xyuas Tsis Tau

Ua tsis tiav threaded rods qhia ib zaj dab neeg. Ib qho nkig, crystalline tawg nto feem ntau qhia tias overload los yog hydrogen embrittlement (feem ntau nrog electroplated high-strength steel). Ib qho tawg nrog du, concentric rings ua rau qhov kawg shear di ncauj yog classic qaug zog tsis ua hauj lwm - lub load yog cycling. Ib tug stretched, necked pas nrig ua ntej tsis ua hauj lwm taw qhia rau ductile overload. Kev nyeem cov cim no pab koj kho qhov laj thawj, tsis yog hloov ib feem.

Ib qho ntawm peb cov lus qhia ua tsis tiav yog ntawm lub vijtsam vibrating. Cov rods cia loosening thiab ces nkees. Lock washers, threadlocker - tsis muaj dab tsi ua haujlwm ntev. Txoj kev daws tsis yog tus pas nrig zoo dua; nws yog los hloov cov qauv siv ib tug studded kev twb kev txuas nrog ib tug prevailing-torque txiv ntseej, hloov lub qaug zog taw tes mus rau ib tug ntau yooj yim replaceable tivthaiv. Qee lub sij hawm, cov lus teb yog los kho dua qhov kev sib txuas, tsis txhob ua kom qhov loj me ntawm tus pas nrig.

Nws boils mus rau qhov no: kho threaded rods raws li engineered Cheebtsam, tsis generic hardware. Qhia cov khoom, qib, txheej, thiab xov hom nrog kev saib xyuas ntau npaum li koj xav tau lub twj tso kua mis lossis lub valve. To taub cov ntaub ntawv load - zoo li qub, dynamic, corrosive. Thiab muab lawv los ntawm ib tus neeg uas nkag siab qhov sib txawv, ib tus neeg kos rau hauv cov txheej txheem tsim khoom, tsis yog ib phau ntawv teev npe xwb. Qhov kev mloog rau kev nthuav dav yog dab tsi cais qhov kev txhim kho ruaj khov los ntawm kev kho mob taub hau yav tom ntej.