Hauv cov tsheb niaj hnub, txawm tias nws yog qhov chaw kho kom zoo nkauj sab nrauv (xws li bumpers, fender, log npog, deflectors, thiab lwm yam), kho kom zoo nkauj sab hauv (xws li ntsuas cov khoom, cov qhov rooj sab hauv, cov kab hauv qab, cov rooj npog npog, rooj zaum) Cov rooj zaum , kev tiv thaiv tom qab, thiab lwm yam), lossis cov khoom siv thiab cov txheej txheem (roj tank, lub tshuab lim dej, lub tshuab lim cua, lub tshuab cua ntxuam, thiab lwm yam), cov duab ntxoov ntxoo ntawm cov yas yuav pom nyob txhua qhov chaw. Tam sim no, cov khoom siv yas ntawm kg ntawm cov tsheb niaj hnub hloov cov ntaub ntawv tsoos hlau qub uas thaum xub thawj xav tau 200-300kg, thiab cov nyhav-txo cov nyhuv yog qhov tseem ceeb, uas yog qhov tseem ceeb rau txuag lub zog thiab txo cov pa roj tsev ua pa. Piv txwv li, hloov cov hlau los ntawm tsheb yas nkag mus rau manifold tuaj yeem txo qhov zoo ntawm 40% mus rau 60%, thiab lub teeb saum npoo ntshiab tsis kam tiv thaiv yog me me, uas tuaj yeem txhim kho lub cav ua haujlwm thiab ua si lub luag haujlwm hauv kev txhim kho kev sib txuam, txo roj kev noj, kev co thiab suab nrov txo. Raws li kev txheeb cais, muaj ntau lub plas ntawm cov tsheb rau lub tsheb, thiab tus nqi nruab nrab ntawm cov pa tsheb ntawm ib lub tsheb tau suav txog 5% txog 10% ntawm qhov hnyav ntawm tsheb. Nrog rau kev txhim kho cov tsheb sib tw thiab kev nthuav dav ntawm cov yas tsheb, tsheb plastics Siv cov tsheb kauj vab yuav nce ntxiv yav tom ntej.
Muaj ob hom kev ua cov plastics rau tsheb: ib qho yog thermosetting yas uas tuaj yeem tiv taus kev ua haujlwm ci; lwm qhov yog thermoplastic, uas muaj qhov zoo ntawm kev ua tau yooj yim thiab ceev nrawm los ua haujlwm. Ntawm cov plastics rau cov tsheb, cov khoom siv sab saum toj 7 yas thiab lawv cov khoom sib piv yog ntxhib: 21% rau polypropylene, 19.6% rau polyurethane, 12.2% rau polyvinyl chloride, 10.4% rau thermoset composites, thiab ABS 8%, nylon 7.8%, polyethylene 6 %.
Cov yas sib txuas yog qhov tseem ceeb ntawm lawv txoj kev siv dav. Cov yas tuaj yeem koom tau los ntawm kev siv tshuab ntawm kev yoo, khi lossis vuam. Qhov txuas fastening haum rau txhua yam plastics, tab sis nws kim heev, kev ntxhov siab-ua haujlwm, tsis ua qhov sib koom ua ke los yog ua tiav kev ua haujlwm zoo. Kev cog lus muab kev sib tw zoo heev thiab cov pob qij txha zoo, tab sis nws nyuaj rau kev khiav lag luam, yuav tsum ua tib zoo sib koom ua ke thiab npaj saum npoo av, thiab yog qhov qeeb heev thiab tsis tsim nyog rau huab hwm coj ntau lawm. Lub vuam siv kev lag luam yog yooj yim, yooj yim, nrawm thiab txhim khu kev qha, thiab tuaj yeem tsim cov pob qij txha nrog lub zog zoo li qub ze rau ntawm cov hlau puag, yog li nws tsim nyog rau huab hwm coj ntau lawm thiab tau siv ntau dua hauv kev lag luam tsheb. Cov qib ntawm cov yas vuam thev naus laus zis tau dhau los ua ib qhov ntsuas qhov ntsuas cov theem ntawm cov thev naus laus zis thev naus laus zis thiab qib kev tsim cov khoom tshiab.
Ntau yam yas vuam txheej txheem rau kev lag luam tsheb
Kev siv lub tshuab ua cov yas tsuas yog tsuas yog ua rau cov hlau txuas ntawm cov thermoplastics, vim tias tsuas yog cov thermoplastics tuaj yeem yaj lossis muag thaum kub dua, thaum cov thermosets tsis tuaj yeem ua kom mos thiab ploj thaum kub.
Cov huab cua kub yog zoo li cov hlau oxygenacetylene roj vuam, tshwj tsis yog tias tom kawg yog rhuab los ntawm cov roj kub kub nrog qhib nplaim taws. Hauv cov txheej txheem kub roj vuam, cov pa roj kub kub ntws los ntawm vuam tshuab (qhov kub raug yog 200-300 ° C, qhov ntws txaus yog 15 ~ 60 L / min) thiab cov pas nrig txhaws thiab qhov txuas tau kho tau kho lub sijhawm. Thaum saum npoo ntawm cov khoom muag muag mus rau lub xeev khov, cov pas nrig txuas ntxiv. Nias rau hauv lub weld. Cov khoom siv puv pas nrig yog tib yam li cov khoom siv hauv paus, feem ntau puag ncig (kwv yees 3 hli inch), thiab cov hlau txuas ntau yog siv thaum vuam daim hlau tuab. Ib qho kev tsis zoo ntawm kev sib tw lub voj voos sib txuas yog tias lub npauj hollow yooj yim daig hauv qhov sib txuas thaum lub sijhawm sib txuas ntawm cov hlau txuas ntau, uas ua rau lub zog txo qis, uas yuav daws tau los ntawm kev siv lub voos ntu ntawm qhov txuas weld. Cov ntaub ntawv cov ntaub ntawv uas tuaj yeem ua kom kub kub welded muaj xws li polyvinyl chloride, polyethylene, polypropylene, plexiglass, polycarbonate, polyoxymethylene, polystyrene, nylon, ABS, thiab lwm yam. Qhov tseem ceeb ntawm cov pa roj kub kub yog kev yoog (hloov tau), tuaj yeem siv los ua cov txheej txheem loj, cov khoom siv yooj yim nrog cov khoom siv tau yooj yim. Cov cua kub vuam tsim nyog rau cov qauv tsis xwm yeem, tab sis nws qeeb, thiab qhov zoo ntawm vuam yog feem ntau nyob ntawm qhov kev txawj ntawm tus neeg teb xov tooj, yog li nws tsis tshua muaj siv rau huab hwm coj ntau lawm, tab sis nws tsim nyog rau kev ua haujlwm kho.
