Nkag siab TR10: Qhov taw qhia tseem ceeb tshaj plaws rau qis -Tsub Sealing Recovery

 

Zoo siab txais tos rau peb -ib feem ntawm kev ua haujlwm ntawm Cov Roj Hmab Kub Kub Ua Haujlwm rau cov ntawv thov kev sib khi. Cov koob no yog sau tshwj xeeb rau kev yuav cov engineers, sealing design engineers, thiab technical professionals ua hauj lwm nrog railway braking systems, pneumatic tswj li qub, thiab hlau -bonded valve cores.

 

 

 

 

 

Hauv thawj tsab xov xwm ntawm cov yeeb yaj kiab no, peb tau tshuaj xyuas iav Hloov Hloov Kub Kub (Tg) thiab nws lub luag haujlwm hauv kev nkag siab qis -kub roj hmab tus cwj pwm. Thaum Tg piav qhia txog qib molecular- hloov pauv, cov kws paub txog kev sib khi paub tias TR10 (Temperature Retraction ntawm 10%) feem ntau muab kev kwv yees tseeb dua ntawm qhov tseeb-kev sib khi hauv ntiaj teb hauv qhov chaw qis- qhov kub thiab txias.

 

Rau lub valve cores nyob rau hauv railway braking systems thiab pneumatic tswj li qub ua hauj lwm nyob rau hauv huab cua txias, lub peev xwm ntawm roj hmab rov qab nws cov duab tom qab compression yog dab tsi thaum kawg tiv thaiv to. Qhov no yog qhov tseeb ntawm TR10 ntsuas.

 

 

TR10 stands rau Kub Retraction ntawm 10%. Txoj kev xeem (feem ntau ASTM D1329 lossis ISO 2921) suav nrog:

• Nthuav cov qauv roj hmab rau ib qho kev elongation (feem ntau 50% lossis 100%)
• Ua kom khov cov qauv ntawm qhov qis qis kom txog thaum nws ua nruj
• Cia tus qauv kom sov maj mam thaum ntsuas qhov thim rov qab
• Sau qhov ntsuas kub uas cov qauv rov qab 10% ntawm nws qhov qub deformation

 

Tsis zoo li Tg, uas ntsuas kev hloov pauv hauv cov khoom siv, TR10 ncaj qha cuam tshuam cov roj hmab muaj peev xwm rov qab tau nws cov elasticity tom qab qis - kub deformation. Rau kev sib khi daim ntawv thov, qhov ntsuas no feem ntau cuam tshuam zoo dua nrog kev ua haujlwm ntawm thaj chaw.

 

 

Ob qho kev ntsuas no piav qhia txog tus cwj pwm qis - kub, tab sis lawv ua haujlwm sib txawv. Kev nkag siab qhov sib txawv yog qhov tseem ceeb rau kev xaiv cov khoom tsim nyog:

 

 

• Tg qhia txog kev hloov pauv ntawm molecular; TR10 ntsuas cov tswv yim elastic rov qab
• Tg yog qhov ntsuas cua sov hauv chav kuaj; TR10 simulates qhov tseeb sealing deformation tej yam kev mob
• Tg muaj tus nqi nruab nrab rau kev sib khi tsim; TR10 muaj kev thov ncaj qha rau tus nqi siab
• Tg tshwm sim qee zaum hauv cov ntaub ntawv cov ntaub ntawv dav dav; TR10 tshwm sim ntau zaus hauv kev sib khi- cov lus qhia tshwj xeeb

 

Hauv ntau daim ntawv thov valve cores, engineers tseem ceeb tshaj TR10 vim tias kev ruaj ntseg sealing nyob ntawm cov roj hmab muaj peev xwm rov qab tau tom qab compression es tsis yog tsuas yog nyob rau saum nws cov iav hloov kub. Cov khoom siv yuav yog siab dua Tg tab sis tseem rov qab tau qeeb dhau los tswj lub zog sib khi hauv cov xwm txheej zoo.

 

 

 

Qhov qis Tg txhais tau hais tias cov roj hmab tseem hloov pauv ntawm qhov txias dua, thaum qis dua TR10 qhia tau tias elastic rov qab sai dua tom qab deformation. Ua ke, cov cuab yeej no pab tswj lub zog sib khi, txo qis kev pheej hmoo, thiab txhim kho valve kev ntseeg siab thaum lub caij ntuj no ua haujlwm.

 

 

 

 

Khoom siv	Yam Tg	Qauv TR10	Roj kuj	Nqi
Standard NBR	-25 rau -40 degree	-20 rau -35 degree	Zoo heev	Tsawg
TGE Optimized Tsawg-Tub NBR	-60 degree	-50 degree	Zoo heev	Nruab nrab
Standard HNBR	-35 rau -45 degree	-30 rau -40 degree	Zoo heev	Siab
Txheem EPDM	-55 degree	-50 degree	pluag	Nruab nrab
Txheem FKM	-10 degree	-5 degree	Zoo heev	Siab heev

 

Nco ntsoov tias TR10 qhov tseem ceeb feem ntau yog siab dua (sov dua) dua li Tg qhov tseem ceeb rau tib qhov sib xyaw. Qhov no yog qhov xav tau thiab ib txwm muaj- cov khoom yuav pib hloov pauv ntawm Tg tab sis yuav tsum tau sov dua kom ua tiav cov txiaj ntsig elastic rov qab.

 

 

Hlau -bonded valve cores nyob rau hauv railway pneumatic systems muaj tej yam kev mob uas ua rau TR10 tshwj xeeb tshaj yog muaj feem xyuam rau:

• Cov ntsaws ruaj ruaj nyob twj ywm compressed rau ncua sij hawm ntawm qhov kub thiab txias
• Kev sib tw siab yuav tsum tau rov ua dua thiab rov ua dua
• Dynamic valve txav xav tau tam sim elastic teb
• Kev nyab xeeb ntawm lub cev nyob ntawm xoom- kev ua haujlwm tawm txawm nyob ntawm -40℃thiab qis dua

 

Thaum lub foob yog compressed ntawm qhov kub thiab txias, nws yuav tsum tau "them rov qab" tiv thaiv mating nto los tuav lub sealing quab yuam. Yog tias kev rov qab qeeb dhau (qhia los ntawm TR10 siab), lub foob yuav tsis ua raws li qhov tsis sib xws los yog them nyiaj rau kev hloov siab, uas ua rau cov dej xau.

 

 

Standard NBR tebchaw feem ntau muaj TR10 qhov tseem ceeb nyob rau hauv -20℃mus rau -35℃ntau, ua rau ntau tus engineers qhia ntau kim polymers rau huab cua txias. Txawm li cas los xij, advanced compounding technology tau hloov cov qauv no.

Ntawm TGE, peb tau tsim kho qhov ntsuas qis qis -kub NBR cov qauv uas ua tiav TR10 qhov tseem ceeb hauv qab -50℃thaum tuav:

• Cov roj zoo heev (tseem ceeb rau pneumatic tshuab nrog lubricants)
• Zoo compression txheej txheem
• Cov roj hmab muaj zog-rau- hlau nplaum adhesion
• Kev ua tau zoo ib yam los ntawm ntau txhiab lub voj voog siab

 

 

Ib tug neeg European tsim pneumatic valve Cheebtsam rau railway daim ntawv thov yuav tsum txhim khu kev qha sealing ntawm kub nce mus txog -40 degree. Pab pawg engineering pib txiav txim siab hloov mus rau cov khoom kim heev tshwj xeeb elastomers, uas yuav muaj cov nqi tiv thaiv ntau dua 200%.

 

Hloov chaw, peb pab neeg ua haujlwm tau ua kom zoo rau NBR cov qauv los txhim kho qis- qhov kub thiab txias yooj yim thaum tuav cov roj ua haujlwm zoo thiab kev sib txuas ntawm hlau. Lub resulting compound tiav:

• Tg hauv qab -60 degree
• TR10 hauv qab -50 degree
• Ruaj khov compression rov qab tom qab rov qab thermal cycling
• Txhim khu kev ua tau zoo thoob plaws hauv kev kuaj xyuas cov khoom

 

Qhov kev daws teeb meem no tau muab qhov yuav tsum tau ua kom qis - qhov kub thiab txias ntawm ib feem ntawm tus nqi ntawm lwm cov polymers, thaum tuav pov thawj kev tsim khoom thiab kev sib raug zoo ntawm NBR.

 

 

Txhawm rau kom ntseeg tau tias koj tau txais cov khoom sib txuas nrog qhov qis qis -kub rov qab, suav nrog cov kev cai no hauv koj qhov kev qhia tshwj xeeb:

• Qhia meej TR10 tus nqi siab tshaj (piv txwv li, TR10 Tsawg dua lossis sib npaug rau -45 degree) raws li koj qhov kev ua haujlwm yam tsawg kawg nkaus
• Siv cov qauv xeem: ASTM D1329 lossis ISO 2921, Txoj Kev A (kua immersion)
• Yuav tsum tau kuaj TR10 tom qab kev laus thaum tshav kub kub thiab dej raug, tsis yog ntawm cov khoom qub
• Thov cov ntaub ntawv sib txheeb ntawm TR10 thiab qhov ntsuas qhov tseeb ntawm qhov kub thiab txias

 

 

TR10 yog qhov tseem ceeb tshaj plaws uas muaj feem cuam tshuam qis - qhov ntsuas kub rau kev sib khi daim ntawv thov vim nws ncaj qha ntsuas elastic rov qab tom qab deformation - cov khoom muaj tseeb uas tuav lub zog sib khi. Thaum Tg muab cov txiaj ntsig theoretical keeb kwm yav dhau los, TR10 yuav tsum yog koj qhov kev qhia tshwj xeeb rau qis -kub sealing kev ua tau zoo.

 

 

Nyob rau hauv tsab xov xwm kawg ntawm no series, peb yuav tshuaj xyuas qhov kub thiab txias brittleness thiab nws lub luag hauj lwm los tiv thaiv kev puas tsuaj foob tsis ua hauj lwm thaum tuav, installation, thiab huab cua txias.

 

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Nrhiav cov roj hmab-cov hlau sib txuas valve cores nrog cov pov thawj qis-kub rov ua haujlwm? Peb pab pawg neeg tsim khoom txhawb nqa kev xaiv cov khoom raws li kev ua haujlwm kub, kev sib khi xov xwm, thiab kev pabcuam lub neej. Peb muab cov kev cai roj hmab formulations, validated bonding txheej txheem, thiab zoo ib yam ntau lawm zoo los pab peb cov neeg muas zaub txhim kho cov cuab yeej kev ntseeg siab nyob rau hauv xav tau daim ntawv thov.Nyem no tiv tauj peb