Thermoplastic elastomer TPE thiab TPU yog qis- cov ntaub ntawv kub kub nrog cov qhov rais ua haujlwm xws li 160℃mus rau 240 degree, featuring low melt viscosity and high rensitivity to me temperature deviations. Ib qho kev ua txhaum tsis tu ncua ntawm TPE / TPU kub khiav pwm yog kub hysteresis: tus maub los qhia qhov ntsuas kub ruaj khov, tab sis qhov tseeb nozzle qhov rooj kub hloov pauv mus deb tom qab cua sov hloov hluav taws xob, ua rau tsis sib xws stringing, flash thiab cov khoom muag tsis sib xws. Qhov tshwm sim hysteresis no tshwm sim los ntawm kev sib xyaw ua ke ntawm cov txheej txheem thermocouple thiab kev teeb tsa, nrog cov phiaj xwm tshem tawm kev ua kom zoo tshaj plaws tshwj xeeb rau qis - kub elastomer kub khiav.
Peb lub hauv paus ua rau kub hysteresis ntawm TPE / TPU pwm.
1. Kev tiv thaiv kev tiv thaiv ntau dhau ntawm cov khoom siv thermocouple ntsuas. TPE / TPU pyrolysis ua cov nplaum mos cov pa roj carbon deposits ntawm nruab nrab kub, yooj yim adhering rau lub caij nplooj ntoos hlav nplhaib thiab khawm ntsuas puag tiv thaiv nto los ua tuab tshav kub rwb thaiv tsev txheej, slowing tshav kub hloov ntawm nozzle / manifold thiab thermocouple hlws ris thiab generating pom tseeb kub lag.
2. Tshaj - txheej rwb thaiv tsev tuab ntawm ungrounded thermocouple probes. Ntau tus neeg ua haujlwm pwm xaiv universal ungrounded tuab - sheath probes rau TPE valve rooj vag kom tsis txhob cuam tshuam; tuab magnesium oxide rwb thaiv tsev drastic txuas mus rau lub tshav kub conduction lub sij hawm, tsim loj teeb liab hysteresis unsuitable rau tsawg-viscosity elastomer yaj leej tswj.
3. Tsis txaus ua ntej-compression quab yuam ntawm aging caij nplooj ntoos hlav ntsuas rings. Ntev -lub sij hawm qis- kub cyclic expansion/contraction tsis muaj zog lub caij nplooj ntoos hlav elasticity, tsim micro cua qhov sib txawv ntawm ntsuas lub nplhaib thiab lub nozzle sab nrauv phab ntsa. Huab cua tsis zoo thermal conductivity, amplifying kub teb qeeb thiab hysteresis thaum nquag PID fais fab hloov mus.
Hierarchical optimization daws kom tshem tawm TPE / TPU kub hysteresis.
1. Hloov kho dua tshiab rau nyias- phab ntsa hauv av nrawm- teb cov qauv thermocouple. Hloov cov tuab ungrounded probes nrog nyias seamless grounded lub caij nplooj ntoos hlav lub nplhaib sib xyaw ua ke, lub sij hawm teb tswj nyob rau hauv 0.2s kom txo tau cov yam ntxwv hysteresis. Rau TPU valve rooj pwm xav tau los tiv thaiv- cuam tshuam, xaiv nyias- phab ntsa tsis muaj qhov ntsuas me me nrog txo cov rwb thaiv tsev tuab es tsis yog cov qauv tuab rwb thaiv tsev kom sib npaug tiv thaiv-crosstalk kev ua tau zoo thiab kev kub ceev ceev.
2. Ua kom zoo ntsuas qhov chaw tiv thaiv kev tiv thaiv -carbonization. Customize daim iav polished anti- nplaum coated tooj dag ntsuas puag thiab beryllium tooj liab springs rau TPE / TPU pwm; Cov pa roj carbon monoxide uas tsim los ntawm elastomer pyrolysis tsis yooj yim ua raws li cov npoo coated, ua kom cov thermal tiv thaiv tsub zuj zuj thiab qeeb hysteresis tsos. Txo kev sib cuag ntawm qhov chaw tu lub voj voog mus rau ob lub hlis txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm
3. Txheem lub caij nplooj ntoos hlav ua ntej - compression installation specifications. Hloov elastic attenuated springs thaum txhua lub voj voog tu; nruj compression screws nrog standardized 1.2N·m torque kom muaj kev sib raug zoo tag nrho ntawm kev ntsuas lub nplhaib thiab cov phab ntsa nozzle yam tsis muaj cua qhov khoob. Siv tsawg-viscosity saj zawg zog siab-kub thermal conductive muab tshuaj txhuam rau ntawm qhov chaw tiv tauj; nws ua rau micro gaps thiab resists mos elastomer carbon adhesion zoo dua li cov tuab tuab conductive muab tshuaj txhuam.
4. Controller PID parameter optimization piv qis- kub ceev- teb cov thermocouples. Tsim nyog nce kev nce qib P thiab ua kom luv luv derivative D lub sij hawm kom ceev cua sov lub zog zoo -tuning ceev, offsetting residual me ntsis hysteresis ntawm ntsuas lub teeb liab kis tau tus mob. Tsis txhob dhau - lub sij hawm loj tsis tu ncua uas ua kom muaj kev lag luam ntau dua -ua kom kub dhau thiab qis qis qis qis rau qhov muag qis- viscosity elastomers.
Kev tiv thaiv kev tsim khoom txhua hnub los tiv thaiv hysteresis rov tshwm sim. Tsis txhob kaw pwm ntev nrog cov seem TPE / TPU yaj nyob rau hauv kub khiav nozzles; soft elastomer carbonizes ceev ceev ntawm standby kub, sai sai tsim cov pa roj carbon txheej ntawm cov thermocouple tiv tauj qhov chaw. Tshem tawm tag nrho cov kev khiav dej num kub khiav nrog nkauj xwb PP ua ntej kaw txhua hnub kom tshem tawm cov khoom seem elastomer nyob ib ncig ntawm kev ntsuas cov ntsiab lus, txuas ntxiv lub voj voog kev pabcuam ntawm xoom-hysteresis ruaj khov kub tswj ntawm kev saib xyuas.
