Qhuav Cov Roj: Nws Yog Dab Tsi, Qhov Sib Xyaw Qhuav Ntau Npaum Li Cas, Daim Ntawv Thov Thiab GOST, Ua Ke Kom Qhuav Cov Roj Thiab Siv Ib 1 M2 Rau Ntoo

2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2023-12-16 05:41

Qhov chaw kho kom zoo nkauj feem ntau txhais tau tias ua rau lawv nrog cov xim thiab cov kua roj vanish. Nov yog qhov paub thiab daws tau yooj yim. Tab sis txhawm rau txhawm rau siv tib lub ziab cov roj, nws yuav tsum tau ua tib zoo kawm cov yam ntxwv ntawm cov txheej txheej thiab nws cov ntau yam.

Nws yog dab tsi?

Ntoo tau dhau los ua tus thawj coj hauv kev nyiam ntawm cov neeg siv khoom, thaum cov yas thiab lwm yam khoom siv hluavtaws poob qhov kev thov. Tab sis nws yog ib qho tseem ceeb kom nkag siab tias ntoo xav tau kev ua haujlwm zoo tshaj plaws, thiab kom qhuav cov roj tso cai rau koj npog lub hauv paus ntoo nrog zaj duab xis tiv thaiv, thaum ua kom ntseeg tau qib kev nyab xeeb huv. Lub hauv paus tseem ceeb ntawm kev sib xyaw ua ke yog tsim los ntawm cov khoom xyaw ntuj (roj zaub), thiab lawv suav tsawg kawg 45% ntawm qhov hnyav.

Daim ntawv thov nta

Qhuav cov roj yog thawj tus kws tshaj lij ua yeeb yaj kiab ntau pua xyoo dhau los. Cov txheej txheem kev tsim khoom tau hloov pauv me me txij thaum ntawd los, tab sis muaj ntau yam khoom siv tseem ceeb uas yuav tsum tau ua ntawv thov sib txawv.

Kev ua nrog kev sib xyaw ua ke tau ua tiav vim nws pheej yig heev . (txog li ib feem peb ntawm qhov sib tov poob rau qhov hnyav, feem ntau yog tus dawb) Kev ziab kom nrawm nce sai, kev ntseeg tau ntawm cov txheej tsim yog siab heev. Yeej, xws li kev sib xyaw ua ke tau siv rau kev ua tiav sab nrauv ntawm cov ntoo, los ntawm qhov tsis hnov tsw ntxhiab sai sai.

Txhua qhov roj qhuav, tsis suav nrog cov khoom sib txuas hauv ntuj, muaj cov tshuaj uas ua rau hluav taws thiab txawm tias tawg, yog li lawv yuav tsum tau saib xyuas nrog kev saib xyuas zoo tshaj plaws.

Thaum npog tsob ntoo, cov roj linseed ntuj qhuav rau qhov siab tshaj 24 teev (ntawm chav ntsuas kub ntawm 20 degrees). Hemp formulations muaj tib yam tsis. Tom qab ib hnub, sib tov raws li cov paj noob hlis khaws lawv cov nplaum me ntsis ntxiv. Cov khoom siv ua ke tau ruaj khov dua thiab tau lees tias yuav qhuav hauv 1 hnub. Rau ntau yam khoom siv hluavtaws, qhov no yog lub sijhawm luv tshaj plaws, txij li qib ntawm evaporation tsawg dua.

Feem ntau (tshwj xeeb tshaj yog tom qab khaws cia ntev) nws dhau los ua kom cov roj ziab kom qhuav. Kev sib xyaw ntuj tau khaws cia hauv qhov xwm txheej zoo tshaj plaws, vim cov roj zaub tuaj yeem nyob hauv cov kua sib xws mus ntev. Muab qhov txaus ntshai ntawm cov sib xyaw no, txhawm rau txhawm rau txhawm rau sib xyaw ua kom tuab, koj yuav tsum tau ua tib zoo npaj.

Qhov no xav tau:

• xaiv ib chav nrog qhov cua zoo heev;
• ua haujlwm kom deb ntawm qhib cov nplaim taws thiab cov cua sov;
• siv cov ntawv xeem nruj uas pom zoo los ntawm cov khw tsim khoom tshwj xeeb.

Thaum ua haujlwm nrog cov khoom siv hluavtaws, ib yam li sib xyaw ntawm cov tshuaj tsis paub muaj pes tsawg leeg, cov hnab looj tes roj hmab yuav tsum tau hnav ua ntej sib tov.

Nws yog ib qho tseem ceeb kom nco ntsoov tias yog tias muaj kev sib cuag ntawm daim tawv nqaij, qee yam tshuaj tuaj yeem ua rau cov tshuaj hlawv.

Feem ntau, thaum diluting cov roj kom qhuav, lawv siv:

• Ntsuj Plig Dawb Huv;
• roj castor;
• lwm yam kev lag luam tsim tshuaj lom neeg.

Feem ntau, qhov sib ntxiv ntawm cov kuab tshuaj ntxiv nrog rau qhov hnyav ntawm cov roj kom qhuav yog qhov siab tshaj 10% (tshwj tsis yog muab los ntawm cov lus qhia).

Cov kws tshaj lij thiab cov kws tsim vaj tsev tsis siv cov roj ziab khaub ncaws uas tseem nyob hauv lub thawv ntim khoom ntim rau ntau tshaj 12 lub hlis. Txawm hais tias theem ua kua, kev ua kom pom kev sab nraud thiab tsis muaj cov dej nag los nag tau khaws cia, cov khoom tsis haum rau kev ua haujlwm ntxiv thiab tib lub sijhawm ua rau muaj kev phom sij loj.

Yog tias koj ntseeg siab hauv qhov ua tau zoo ntawm cov tshuaj tiv thaiv uas tau tsim cov nag lossis daus, nws yog qhov txaus rau feem ntau los lim cov kua los ntawm cov hlau sieve. Tom qab ntawd cov khoom me me yuav tsis xaus rau ntawm cov ntoo, thiab nws yuav tsis plam nws qhov du. Koj tuaj yeem hnov cov lus hais tias ziab cov roj yuav tsum tsis txhob muab ntxhua, vim nws tseem yuav tsis rov ua nws cov yam ntxwv. Tab sis, tsawg kawg, cov kua dej thiab viscosity yuav txhim kho, kev nkag mus muaj peev xwm yuav nce ntxiv, thiab yog li nws yuav tuaj yeem npog thaj tsam nrog cov roj linseed uas tsis xav tau kev ua kom zoo ntxiv.

Ntoo ruaj khov nrog cov roj kom qhuav txhais tau hais tias cov khoom ua tiav yuav tsum tau muab raus rau hauv cov kua.

Thaum lub sijhawm ua haujlwm, kev tshuaj xyuas tau zoo nyob rau theem, nqa tswj qhov hnyav tsawg kawg peb zaug:

• ua ntej soaking;
• tom qab kawg impregnation;
• tom qab qhov kawg ntawm cov txheej txheem polymerization.

Txhawm rau ua kom cov tshuaj polymer qhuav thiab ua kom tawv tawv dua, cov kab qee zaum tau muab tso rau hauv qhov cub lossis muab rhaub hauv cov dej npau. Cov qhov dej txhaws tuaj yeem ua tau los ntawm kev sib xyaw ntawm cov ziab cov roj thiab cov av hauv av (lawv raug coj los, feem, 3 thiab 8 ntu). Kev npaj ntawm pawg yog txiav txim los ntawm seb nws yog homogeneous. Nws yuav tsum tau rub, thiab cov kab xev yuav tsum tsis txhob tawg.

Hom: yuav xaiv li cas?

Tsis hais txog kev nplua nuj ntawm cov tuam ntxhab, cov txheej txheem kev tsim khoom yog hais txog qhov zoo ib yam, tsawg kawg nrog kev xav txog kev tsim ntuj tsim. Cov roj zaub tau siv, kev kho cua sov tau ua tiav thiab thaum kawg ntawm kev pom, cov desiccants tau qhia. GOST 7931 - 76, raws li cov khoom siv no tau tsim tawm, suav tias yog qhov qub, tab sis tsis muaj lwm cov ntaub ntawv tswj hwm.

Qhov muaj pes tsawg leeg ntawm cov roj qhuav tuaj yeem suav nrog ntau hom desiccant, ua ntej tshaj plaws, cov no yog cov hlau:

• manganese;
• cobalt;
• txhuas;
• hlau;
• strontium los yog lithium.

Thaum paub koj tus kheej nrog daim ntawv qhia tshuaj, koj yuav tsum tsom mus rau qhov siab ntawm cov tshuaj reagents. Kev nyab xeeb tshaj plaws tau txiav txim siab los ntawm cov kws tshaj lij kom ua kom qhuav raws li cobalt, qhov siab uas yuav tsum yog 3-5% (qis dua qhov tsis muaj txiaj ntsig, thiab qhov loj yog qhov txaus ntshai). Ntawm qhov siab dua, txheej yuav ua rau polymerize sai heev txawm tias tom qab ziab, vim tias saum npoo yuav tsaus thiab tawg. Vim li no, cov neeg pleev xim ib txwm siv cov kua roj vanish thiab pleev xim yam tsis muaj kev qhia txog ziab.

Qhuav cov roj ntawm K2 lub hom phiaj yog nruj me ntsis rau kev ua haujlwm sab hauv, nws yog qhov tsaus dua li qib 3. Lub xub ntiag ntawm cov khoom zoo li no ua rau kom muaj qhov sib xws thiab tsis sib xws ntawm kev ziab. Yuav tsum tau txhuam kom siv cov khoom siv.

Ntuj

Cov roj qhuav no yog qhov zoo tshaj plaws ib puag ncig ib puag ncig, tseem muaj qhov ziab hauv nws, tab sis qhov sib ntxiv ntawm cov tshuaj ntxiv yog tsawg.

Cov yam ntxwv tseem ceeb (yam ntxwv) ntawm cov roj kom qhuav yog raws li hauv qab no:

• qhov kev faib ua feem ntawm desiccant - siab tshaj 3, 97%;
• ziab yuav siv qhov kub ntawm 20 txog 22 degrees;
• kev ziab zaum kawg yuav siv sijhawm ib hnub;
• qhov ntom ntawm qhov muaj pes tsawg leeg yog 0.94 lossis 0.95 g rau 1 cubic meter. m.; ua.
• acidity yog nruj me ntsis normalized;
• phosphorus compounds tsis tuaj yeem muaj ntau dua 0.015%.

Kev kho qhov chaw tom qab nrog cov kua roj vanish lossis xim tsis tuaj yeem ua tau. Ntoo tag nrho khaws nws cov khoom tsis zoo nkauj.

Oksol

Oksol cov kua roj vanish tau txais nrog kev nthuav dav loj ntawm cov roj zaub, xws li kev sib xyaw ntawm cov tshuaj yuav tsum ua raws li GOST 190-78. Cov muaj pes tsawg leeg yuav tsum muaj 55% ntawm cov khoom xyaw ntuj, uas cov kuab tshuaj thiab cov desiccant tau ntxiv. Oxol, zoo li cov roj sib xyaw ua ke, tsis tsim nyog siv sab hauv tsev - cov kuab tshuaj tso tawm tsw ntxhiab tsw zoo, qee zaum tseem tshuav txawm tias tom qab tawv tawv.

Qhov zoo ntawm qhov sib xyaw no yog nws tus nqi pheej yig . Nrog kev pab los ntawm cov muaj pes tsawg leeg, cov xim pleev xim thiab cov kua roj vanish tuaj yeem ua kom sib cais, vim tias qhov kev tiv thaiv sab hauv ntawm cov khoom tsis txaus hauv kev coj ua. Ntawm ntau yam oxols, cov roj flaxseed formulations yog siv tau zoo tshaj plaws, uas tsim cov zaj duab xis muaj zog thiab qhuav sai dua.

Oksol tau muab faib ua ob peb hom. Yog li, cov khoom siv cim nrog tsab ntawv B tsuas tuaj yeem siv rau kev ua haujlwm sab nraum zoov. Cov muaj pes tsawg leeg ntawm PV xav tau thaum koj xav tau los npaj cov tshuaj pleev.

Hauv thawj kis, rau kev tsim cov khoom sib xyaw, koj xav tau linseed thiab roj hemp. Oxol qeb B tuaj yeem siv tau kom tau cov roj lossis ua kom cov xim tuab tuab. Cov sib xyaw zoo li no tsis tuaj yeem siv hauv pem teb.

Oksol kua roj vanish ntawm PV hom ib txwm ua los ntawm kev camelina thiab cov txiv hmab txiv ntoo. Nws kuj tseem muaj cov roj zaub uas tsis tuaj yeem siv rau hauv cov zaub mov ncaj qha lossis los ntawm kev ua: safflower, soy thiab roj pob kws tsis tau lim. Cov khoom siv raw yuav tsum tsis txhob muaj ntau dua 0.3% ntawm cov sib xyaw phosphorus; yuav tsum muaj tsawg dua ntawm lawv, nyob ntawm seb suav li cas. Qhib hlau ntim tau tsuas yog tso cai nrog cov cuab yeej uas tsis ua rau muaj kev cuam tshuam. Nws raug txwv tsis pub qhib hluav taws qhov twg kom qhuav cov roj tau khaws cia thiab siv, txhua lub teeb pom kev zoo yuav tsum tau teeb tsa raws li cov phiaj xwm tiv thaiv kev tawg.

Oksol kua roj vanish tsuas yog siv tau:

• ntawm huab cua qhib;
• nyob rau thaj chaw uas muaj cua nkag tau zoo;
• hauv chav nruab nrog cov khoom siv thiab tso pa tawm txhais tau tias.

Alkyd ziab roj

Cov alkyd ntau yam ntawm cov ziab roj yog tib lub sijhawm pheej yig heev, ua tau ntev tshaj plaws thiab tiv taus cov tshuab. Cov sib xyaw ua ke no xav tau qhov twg los nag hnyav tas li ntog, muaj qhov kub poob thiab hnub ci tawg. Tsawg kawg ob peb xyoos, cov ntoo ntawm cov ntoo sab nraum zoov yuav nyob zoo. Tab sis cov khoom sib xyaw alkyd raug tso cai tsuas yog txhais tau tias ntawm kev kho ua ntej, hauv daim ntawv sawv ib leeg lawv tsis muaj txiaj ntsig txaus. Nws tsis tsim nyog siv lawv sab hauv thiab vim yog muaj ntxhiab tsw zoo.

Alkyd linseed roj yuav tsum tau siv rau cov ntoo ntoo nrog txhuam xim, thiab lawv tau ntxuav ua ntej thiab saib xyuas kom qhuav. Kwv yees li 24 teev tom qab thawj txheej, koj yuav tsum tso ib qho ntxiv, thaum ntsuas kub yog 16 degrees lossis ntau dua.

Qhuav cov roj raws li alkyd resins tau muab faib ua peb pawg loj:

• pentaphthalic;
• glyphthalic;
• xis.

Yeej, cov ntaub ntawv no tau muab rau hauv cov thawv ntim, qee zaum hauv cov thoob. Kwv yees li 20 teev tom qab impregnation, ntoo tuaj yeem pleev xim rau.

Cov xim ntawm cov ziab roj tau txiav txim siab los ntawm cov txheej txheem iodometric , zoo li ntau lwm cov xim thiab cov kua roj vanish. Cov xim tau cuam tshuam los ntawm lub suab nrov ntawm hydroxycarboxylic acids thiab hom siv roj zaub. Lub suab nrov tshaj plaws tuaj yeem tau los ntawm kev siv cov roj av qhuav. Qhov twg hluav taws xob ntws mus, thaj chaw tsaus tau tsim, lawv kuj tseem tuaj yeem tshwm sim los ntawm cua sov muaj zog thiab qhov pom ntawm qhov tseem ceeb ntawm cov dej sludge.

Raws li rau hnub tas sij hawm, cov txheej txheem hauv xeev tam sim no tsis tau sau nws ncaj qha.

Lub sijhawm khaws cia ntev tshaj plaws rau ziab cov roj yog 2 xyoos (tsuas yog hauv cov chav uas muaj kev tiv thaiv zoo tshaj plaws los ntawm yam tsis zoo sab nraud), thiab rau 2 - 3 hnub koj tuaj yeem tso nws tawm hauv qhov chaw qhib. Txog rau thaum kawg ntawm lub txee lub neej, cov khoom siv tau, yog tias tsis yog rau kev tiv thaiv lub hom phiaj, tom qab ntawd txhais tau tias yog qhov hluav taws kub.

Polymer

Polymer kom qhuav cov roj yog cov khoom siv hluavtaws tau los ntawm cov polymerization ntawm cov khoom siv roj av thiab diluted nrog cov kuab tshuaj. Qhov tsis hnov tsw ntawm cov khoom siv no muaj zog heev thiab tsis txaus siab, nyob rau hauv kev cuam tshuam ntawm hluav taws xob ultraviolet, muaj kev puas tsuaj sai sai. Polymer ziab cov roj kom qhuav sai, muab cov zaj duab xis muaj zog nrog lub ci ci, tab sis cov koom nrog ua tsis zoo nrog lawv. Txij li qhov kev tsim qauv tsis suav nrog cov roj, qhov kev daws teeb meem ntawm cov xim yog siab heev.

Nws raug nquahu kom siv cov kua roj vanish polymer thaum ua kom cov roj pleev xim xim tsaus, npaj rau kev pleev xim rau theem ob; nws yog qhov yuav tsum tau ua kom muaj cua nkag hauv chav.

Ua ke

Cov roj sib xyaw ua ke sib txawv me ntsis los ntawm cov ib txwm ntuj, tab sis lawv muaj 70% roj, thiab kwv yees li 30% ntawm qhov hnyav poob ntawm cov kuab tshuaj. Txhawm rau kom tau txais cov tshuaj no, nws yog qhov yuav tsum tau ua kom polymerize cov ziab lossis ib nrab ziab cov roj thiab tso nws tawm ntawm dej. Qhov tseem ceeb ntawm kev siv yog tso tawm cov xim tuab tuab, ua kom qhuav tag qhov chaw nyob rau qhov siab tshaj plaws ntawm ib hnub. Qhov siab ntawm cov tshuaj tsis hloov pauv yog tsawg kawg 50%.

Kev siv cov roj ziab ua ke qee zaum muab cov txiaj ntsig zoo dua .tshaj li siv oxol, tshwj xeeb tshaj yog hais txog lub zog, ua haujlwm ntev, tiv thaiv dej thiab huab cua tsis kam. Kev txiav txim siab yuav tsum tau muab rau qhov pheej hmoo ua kom tuab thaum lub sijhawm khaws cia ntev vim yog tshuaj lom neeg sib xyaw ntawm cov rog dawb thiab cov ntxhia xim.

Khoom cua

Txhua qhov ziab cov roj ntawm cov khoom siv hluavtaws tau los ntawm kev ua kom cov roj ua kom zoo dua qub; GOST tsis tau tsim los rau lawv cov khoom, tsuas muaj qee qhov kev ua haujlwm. Cov xim feem ntau yog sib dua li cov qauv ntuj tsim, thiab cov pob tshab nce ntxiv. Cov roj shale roj thiab ethinol muab cov ntxhiab tsw ntxhiab thiab qhuav tau ntev heev. Cov khoom siv shale tau txais los ntawm oxidizing cov roj ntawm tib lub npe hauv xylene. Nws yog siv feem ntau rau cov xim tsaus thiab pleev xim rau qhov xav tau sib xws.

Nws tsis tuaj yeem lees txais siv cov khoom siv hluavtaws ua rau cov plag tsev thiab lwm yam khoom siv hauv tsev. Etinol yog qhov hnyav dua li cov khoom siv shale thiab tau tsim los siv pov tseg los ntawm cov roj hmab chloroprene. Cov yeeb yaj kiab tsim tau muaj zog heev, qhuav sai thiab ci sab nrauv, nws ua tau zoo tiv taus alkalis thiab kua qaub. Tab sis qib ntawm nws qhov kev tiv thaiv rau huab cua tsis zoo txaus.

Muaj pes tsawg leeg

Cov roj ziab khaub ncaws tsis yog sib zog dua li ntuj lossis oxol, tab sis qee zaum muaj cov xim liab. Tus nqi ntawm cov khoom yog ib txwm qis tshaj. Tab sis nws tsuas yog siv rau hauv qhov xwm txheej tsis tshua muaj neeg, cov xim thiab cov kua roj vanish tsis tau siv cov khoom zoo li no tau ntev.

Noj

Txhawm rau kom ntseeg tau qhov tsawg kawg ntawm kev siv cov khoom ib 1m2, nws yog qhov tsim nyog xaiv oxol, tshwj xeeb tshaj yog txij li txhua qhov sib xyaw ua ke ntawm cov koob no qhuav sai dua li cov khoom sib xyaw. Linseed roj tau noj ntawm 0.08 - 0.1 kg rau 1 sq. m, uas yog, 1 litre tuaj yeem tso rau ntawm 10 - 12 sq. m. Kev siv los ntawm qhov hnyav rau plywood thiab pob zeb ua rau txhua hom ziab cov roj hauv ib qho tshwj xeeb yog nruj me ntsis tus kheej. Nws yog qhov tsim nyog los nrhiav cov ntaub ntawv cuam tshuam hauv cov lus qhia los ntawm cov chaw tsim khoom thiab cov ntaub ntawv nrog.

Pab Qhia

Lub sijhawm kom qhuav yog txo thaum xaiv cov kev daws teeb meem nrog rau qhov sib ntxiv ntawm polymetallic desiccants. Cov ntaub linen ntuj yuav qhuav hauv 20 teev sib xyaw nrog cov hmoov txhuas, thiab yog tias koj ntxiv cov manganese, lub sijhawm no yuav raug txo mus rau 12 teev. Los ntawm kev siv ua ke ntawm ob qho hlau, qhov tos tuaj yeem txo qis rau 8 teev. Txawm nrog tib hom desiccant, qhov kub thiab txias yog qhov tseem ceeb heev.

Thaum huab cua sov mus txog ntau dua 25 degrees, qhov ua kom qhuav ntawm cov roj kom qhuav nrog cobalt ntxiv rau ob zaug, thiab qee zaum txawm tias yog peb zaug nrog ntxiv manganese. Tab sis cov av noo los ntawm 70% nrawm ua rau lub sijhawm ziab.

Hauv qee kis, cov neeg siv tsis txaus siab thov ua kom qhuav cov roj, tab sis, ntawm qhov tsis sib xws, hauv txoj hauv kev zoo kom tshem tau nws . Cov khoom siv no raug tshem tawm ntawm cov ntoo uas siv cov roj av, uas tau rub mus rau thaj chaw xav tau. Tos 20 feeb thiab cov roj yuav sau rau ntawm qhov chaw. Cov txheej txheem no tsuas yog pab tiv thaiv txheej txheej saum npoo av, cov kua dej nqus tau tsis tuaj yeem raug tshem tawm sab nraud. Ntsuj Plig Dawb Huv tuaj yeem txiav txim siab hloov pauv roj av, tsis hnov tsw uas zoo dua, thiab txoj cai ntawm kev ua haujlwm zoo ib yam.

Nws yog qhov zoo los siv cov xim pleev xim, tab sis tsis yog acetone, vim nws yuav tsis ua haujlwm. Linseed roj thiab ntoo stain yuav tsum tsis txhob meej pem, lub luag haujlwm ntawm tom kawg yog kev kho kom zoo nkauj, nws tsis muaj kev tiv thaiv zoo.

Nws yog ib qho tseem ceeb heev kom khiav tawm ntawm qhov tsis hnov tsw hauv chav tsev rau ntau tus neeg siv kho. Nws tsim nyog muab cov rooj tog hauv chav ua noj lossis ua kom tiav, vim qhov tsis hnov ntxhiab no pib ua rau cov neeg xauj tsev nyob tau ob peb lub lis piam lossis ntau lub hlis. Yog li ntawd, tom qab ua tiav, nws yog qhov yuav tsum tau tso cua tawm hauv chav kom tsawg kawg 72 teev, tshwj xeeb tshaj yog thaum tsaus ntuj. Chav tsev nws tus kheej yuav tsum tau muab ntim kom tshem tawm qhov tsis xav tau "tsw".

Ces cov ntawv xov xwm raug hlawv. Zoo dua tsis hlawv lawv hauv hluav taws, tab sis maj mam hlawv, vim tias nws ua rau muaj pa taws ntau. Cov pa luam yeeb uas sau los yuav tsum tsis txhob tso pa tawm tsawg kawg 30 feeb. Koj yuav tsum tsis txhob ua txoj hauv kev no yog tias cov kua roj vanish tau ua tiav.

Yog tsis muaj hluav taws, koj tuaj yeem tshem qhov tsis hnov tsw ntawm cov roj kom qhuav nrog dej: ntau lub ntim nrog nws tau muab tso rau hauv chav thiab hloov txhua 2-3 teev, kev tso tawm ntawm qhov tsis hnov tsw yuav tshwm sim nyob rau hnub thib ob lossis thib peb. Muab ntsev tso rau ib sab ntawm qhov chaw dai kom zoo nkauj nrog cov roj linseed, nws tau hloov pauv txhua hnub, qhov tshiab yuav tuaj txog hnub thib peb lossis thib tsib.

Ntau tus neeg txaus siab rau cov lus nug ntawm seb nws puas tuaj yeem siv cov kua roj vanish dua kom qhuav cov roj lossis tsis yog . Ob hom khoom siv ua zaj duab xis. Thaum cov kua roj vanish siv rau qhov tshiab kom qhuav cov roj kom qhuav, huab cua ua npuas. Dyes NTs-132 thiab qee qhov xim yog sib xws nrog kev pleev xim. Nws tsis tuaj yeem lees txais los thov txheej txheej ntawm subzero kub, ntxiv rau, oxol tau thov ntawm qhov kub tsawg kawg +10 degrees.

Cov nplais nplaum (tsis muaj dej tsis haum) yog tsim los ntawm 0.1 kg ntawm cov kua nplaum ntoo thiab 35 g ntawm cov roj kom qhuav. Cov roj linseed tau ntxiv rau cov kua nplaum yaj thiab sib tov kom huv. Nrog kev siv tom ntej, kev sib xyaw ua ke yuav tsum tau ua kom sov, nws muaj txiaj ntsig zoo tsis tsuas yog rau cov vuas, tab sis kuj rau koom nrog cov ntoo ntoo.

Yuav ua li cas koj tus kheej?

Thaum tsis muaj cov khoom lag luam hauv tsev, cov roj kom qhuav zoo feem ntau yog ua hauv tsev los ntawm cov roj paj noob hlis. Txhawm rau kom tau txais cov khoom lag luam raws li cov roj linseed, koj yuav tsum tau maj mam sov nws, ua kom cov dej ntws tawm, tab sis tsis ua kom sov siab dua 160 degrees. Lub sijhawm ua noj yog 4 teev; nws tsis xav tau ua kom muaj roj ntau ntau nyob rau tib lub sijhawm. Los ntawm ib nrab ntim lub nkoj, koj tuaj yeem tiv thaiv kev tiv thaiv hluav taws ntau ntxiv thiab muab kev ua tau zoo.

Thaum ua npuas dej tshwm, koj tuaj yeem nkag mus rau lub desiccant hauv qhov me me - tsuas yog 0.03 - 0.04 kg rau 1 liter ntawm cov roj . Lub sijhawm ua noj tom qab ntawm 200 degrees mus txog 180 feeb. Kev npaj ntawm qhov kev daws teeb meem yog ntsuas los ntawm kev ua tiav pob tshab ntawm qhov sib xyaw ua ke tso rau ntawm iav huv huv. Koj yuav tsum tau txias cov roj kom qhuav hauv chav sov. Kev hais lus zoo kuj qee zaum tau txais los ntawm txhais tes: 20 feem ntawm rosin tau ua ke nrog 1 feem ntawm manganese peroxide, thiab cov rosin yog thawj zaug ua kom sov txog 150 degrees.