1, haifar da bincike na kayayyakin allura fatattaka
Fasawa, gami da farfajiyar filaform, micro crack, saman fari, fatattakawa da rikicin lalacewa ta hanyar mannewa mai mutuwa da mai gudu ya mutu mannewa, ana iya raba shi zuwa lalacewar lalatawa da fasa aikace-aikace gwargwadon lokacin fashewa Babban dalilan sune kamar haka:
1）. Aiwatar:
(1) Idan matattarar aiki tayi yawa, gudun yana da sauri, da yawa kayan sun cika, kuma allura da lokacin rike matsa lamba sun yi yawa, damuwar cikin zata yi yawa sosai kuma fasa zai faru.
(2) Daidaita saurin buɗe buɗaɗɗe da matsin lamba don hana ɓarkewar ɓarkewa ta hanyar zane mai sauri.
(3) Daidaita yanayin zafin jiki yadda yakamata don sassauta sassa, kuma daidaita yanayin zafin jiki yadda yakamata don hana bazuwar.
(4) Hana fasawa saboda ƙananan ƙarfin inji saboda layin walda da ƙasƙanci na filastik.
(5) Amfani mai dacewa da wakilin sakin kayan kwalliya, kula da sau da yawa don kawar da dutsen ƙirar da ke haɗe da aerosol da sauran abubuwa.
(6) Za'a iya kawar da damuwar saura na sassa ta hanzarta bayan an ƙirƙira ta don rage ƙaruwar fasa.
2）. Mould:
(1) Fitar ya kamata a daidaita, kamar lamba da giciye-yanki na ejector sanduna ya isa, da demoulding gangara ya zama isa, da kuma rami surface ya zama m isa, don haka kamar yadda ya hana fatattaka saboda saura danniya maida hankali da ƙarfin waje ya haifar.
(2) Tsarin sashin bai zama mai siriri ba, kuma ɓangaren miƙa mulki yakamata ya ɗauki canjin baka gwargwadon iko don kauce wa matsi na damuwa da kusurwa da ɗakuna suka haifar.
(3) yakamata ayi amfani da abun da ake sakawa da karafa a matsayin kadan gwargwadon yadda zai iya hana karuwar damuwar cikin gida ta hanyar yawan raguwar abubuwan da ake sakawa da sassan.
(4) Don sassan ƙasa masu zurfin, yakamata a saita bututun shigar da iska mai iska don hana samuwar matsi mara kyau.
(5) Sakafin ya isa ya lalata kafin a iya ƙarfafa kayan ƙofar, wanda yake da sauƙin lalatawa.
(6) Haɗin tsakanin buɗaɗɗen bushing da bututun ƙarfe ya kamata hana jan sanyi da abu mai wuya daga sanya sassan su manne da tsayayyen mutu.
3）. Kayan aiki:
(1) Abubuwan da aka sake amfani da su sun yi yawa, wanda ke haifar da ƙananan ƙarfin sassan.
(2) Yawan zafi mai yawa yana haifar da tasirin sinadarai tsakanin wasu robobin ruwa da tururin ruwa, wanda ke rage karfi da haifar da fatattakar fitarwa.
(3) Kayan da kansa bai dace da yanayin sarrafa su ba ko kuma ingancin basu da kyau, kuma gurɓatarwar zata haifar da fatattaka.
4）. Inji:
A plasticizing damar da allura gyare-gyaren inji ya zama dace. Idan damar yin filastik yayi kadan, zai zama mai laushi saboda rashin isassun filastik da hadawar da bai cika ba. Idan karfin roba yana da girma sosai, zai ragu.
2, haifar da bincike na kumfa a cikin allurar da aka sarrafa kayayyakin
Gas na kumfa (kumfa na kumfa) siriri ne ƙwarai kuma na kumfa ne. Gabaɗaya magana, idan an sami kumfa a lokacin buɗe buɗaɗɗen abu, to matsalar matsalar tsoma baki ne. Samuwar kumfar buhu saboda rashin isassun robobi ne ko kuma matsin lamba. Arkashin saurin sanyaya ƙirar, ana jan mai a kusurwar ramin, wanda ke haifar da asara mai yawa.
sharuɗɗan sulhu:
(1) Inganta ƙarfin allura: matsa lamba, saurin gudu, lokaci da yawan kayan aiki, da ƙara matsa lamba ta baya don cika cikan.
(2) theara yawan zafin jiki na abu, santsi mai gudana. Rage zafin jiki na kayan, rage ƙyamar, da haɓaka ƙwan zafin jiki yadda ya kamata, musamman ma yanayin zafin jiki na cikin gida na kumfa.
(3) An saita ƙofar a cikin ɓangaren ɓangaren ɓangaren ɓangaren don inganta yanayin kwararar bututun ƙarfe, mai gudu da ƙofa, da rage yawan amfani da matsi.
(4) Inganta yanayin shaye shaye.
3, Tantancewar shafin yada allura wanda ya canza
Lalacewa, lankwasawa da murdadden sassan allura da aka sanya su galibi ana haifar da su ne ta hanyar kankancewar da ke cikin hanyar kwarararwa fiye da yadda take a tsaye, wanda hakan ke sanya bangarorin suka warke saboda bambancin kankane a dukkan hanyoyin. Haka kuma, warping yana haifar da babban damuwa na ciki a cikin sassan yayin gyaran allurar. Duk waɗannan bayyanuwar nakasawa ne ta hanyar fuskantar mawuyacin hali. Saboda haka, bisa ƙa'idar magana, zane mai ƙayyade yanayin warpage na sassa. Abu ne mai matukar wahala ka hana wannan dabi'ar ta sauya yanayin yanayin zama. Maganar ƙarshe ga matsalar dole ne ta fara daga mutuƙar ƙira da haɓakawa. Wannan sabon abu yafi faruwa ne ta fuskoki masu zuwa:
1）. Mould:
(1) Kaurin da ingancin sassan ya zama daidai.
(2) Tsarin sanyaya yakamata a tsara shi don yin zafin jiki na kowane ɓangare na ramin juzu'i mai daidaito, tsarin gingin yakamata ya sanya kayan su gudana daidai, kauce wa warping saboda banbancin kwararar shugabanci da ƙimar raguwa, ta yadda yakamata ya ƙara buɗe bakin da babbar tashar na ɓangaren kafa mai wahalar gaske, kuma yi ƙoƙarin kawar da bambancin yawa, banbancin matsi da bambancin zafin jiki a cikin ramin maƙerin.
(3) Yankin miƙa mulki da kusurwar ɓangaren ɓangaren yakamata ya zama mai santsi sosai kuma yana da kyakkyawar ɓarna, kamar ƙara haɓaka ragi, inganta gogewar farfajiyar mutu, da kiyaye daidaiton tsarin fitarwa.
(4) Shaye shaye sosai.
(5) Ta hanyar kara kaurin sashin ko kara hanyar yaki da warping, karfin masu karfin warping na bangaren ya inganta ta masu karfi.
(6) ofarfin kayan da aka yi amfani da su a cikin mould bai isa ba.
2）. Robobi:
Bugu da kari, kristalin na robobi na kara kuzari yana raguwa tare da karuwar saurin sanyaya kuma raguwar na rage gyara shafin.
3）. Aiwatar:
(1) Idan matsi na allura yayi yawa, lokacin riƙewa yayi tsayi da yawa, narkewar zafin jiki yayi ƙasa ƙwarai kuma gudun yana da sauri, damuwa na ciki zai ƙaru kuma warpage zai faru.
(2) Yanayin zafin jiki ya yi yawa kuma lokacin sanyaya yayi gajere, wanda hakan ke sanya sassan zafin rana da haifar da nakasassu.
(3) Don iyakance ƙarni na cikin damuwa, saurin dunƙule da matsa lamba na baya an rage don rage ƙimar yayin kiyaye mafi ƙarancin caji.
(4) Idan ya cancanta, za a iya saita ko sassauta sassan da ke da sauƙin sauƙi da nakasa, sannan za a iya juya shinkafar.
4, Analysis na launi stripe, launi line da launi juna na allura molded kayayyakin
Kodayake daidaiton launi, tsabtar launi da ƙaurawar launi na masaniyar launi sun fi na busassun foda da manna fenti, rarraba Launin Masterbatch, ma'ana, haɗakar daidaiton ƙwarewar ƙwarewar launi a cikin narkewar filastik ba shi da kyau, kuma samfuran da aka gama a dabi'ance suna da bambancin launi na yanki.
Babban mafita sune kamar haka:
(1) theara yawan zafin jikin ɓangaren ciyarwar, musamman zafin jikin ƙarshen ƙarshen ɓangaren ciyarwar, saboda yanayin zafin yana kusa ko ɗan ƙara sama da zafin jikin ɓangaren narkewar, don haka ƙwallon ƙafa mai launi ya iya narkewa da wuri kamar yadda zai yiwu idan ya shiga sashen narkewa, inganta hadewar uniform tare da dilution, da kuma kara damar hada ruwa.
(2) Lokacin da aka daidaita saurin dunƙulen, ƙara matsin lamba na baya na iya haɓaka narkewar zafin jiki da tasirin karfi a cikin ganga.
(3) Gyara kayan kwalliya, musamman tsarin dakin wasa. Idan ƙofar tana da faɗi ƙwarai, tasirin tashin hankali ba shi da kyau kuma haɓakar zafin jiki ba ta da yawa yayin da narkakken abu ya wuce, don haka ramin ƙungiyar launuka ba daidai ba ne, wanda ya kamata a taƙaita shi.
5, Dalilin bincike na ƙanƙantar da bakin cikin kayayyakin da aka ƙera
A yayin aiwatar da allurar gyare-gyare, ɓacin rai damuwa abu ne gama gari. Babban dalilan sune kamar haka
1）. Inji:
(1) Lokacin da ramin bututun ya yi yawa, narkewar za ta dawo baya kuma ta ragu. Lokacin da ramin bututun ƙarfe ya yi ƙarami kaɗan, juriya tana da girma kuma yawan kayan bai isa ba.
(2) forcearancin matse karfi zai haifar da walƙiya ta ragu, don haka ya zama dole a bincika ko akwai wata matsala a tsarin matattarar.
(3) Idan adadin yawan abin da yake cikin roba bai isa ba, ya kamata a zabi mashin din mai yawan roba domin duba ko dunƙulen da gangar suna sawa.
2）. Mould:
(1) Tsarin sassan yakamata ya sanya kaurin bangon ya zama daidai kuma ya tabbatar da raguwa ɗaya.
(2) Sanyin sanyaya da tsarin ɗumamala yakamata ya tabbatar da yanayin zafin jikin kowane sashi.
(3) Tsarin wasan motsa jiki ya zama mai santsi, kuma juriya bai kamata ya yi yawa ba. Misali, girman babbar tashar ruwa, shunt channel da ƙofa yakamata ya dace, ƙarewa ya isa, kuma yankin miƙa mulki ya zama canzawar baka.
(4) Ga sassa na bakin ciki, yakamata a ƙara yawan zafin jiki don tabbatar da kwararar abu mai laushi, kuma ga ɓangarorin bango masu kauri, yakamata a rage zafin muddin.
(5) Ya kamata a buɗe ƙofar a daidaitacciya, gwargwadon yiwuwar a cikin bangon kauri na sassan, kuma ya kamata a ƙara ƙarar sanyi mai kyau
3）. Robobi:
Rinkanƙantar da robobi masu ƙyalli sun fi cutarwa fiye da na robobi marasa ƙwanƙwara. Wajibi ne don ƙara adadin abu ko ƙara wakilin canji a cikin robobi don saurin haɓakar ƙirar da rage baƙin ciki.
4）. Aiwatar:
(1) Yanayin ganga ya yi yawa, ƙarar ta canza sosai, musamman ma yawan zafin wutar makera na gaba. Don filastik tare da rashin ruwa mai kyau, yakamata a ƙara yawan zafin jiki yadda yakamata don tabbatar da aiki mai kyau.
(2) Matsalar allura, saurin gudu, matsin lamba baya kadan, lokacin allura yayi gajarta, don haka adadin abu ko yawa bai isa ba kuma raguwa, matsi, gudu, karfin baya baya girma, yayi tsayi da yawa saboda filasha da raguwa.
(3) Lokacin da matashin ya yi yawa, za a shanye matsafan allurar. Lokacin da matashin ya yi karami kaɗan, matsi na allura ba zai isa ba.
(4) Ga sassan da basa buƙatar daidaito, bayan allurar da matsin lamba, matsakaicin layin yana da matattakala kuma mai taurin zuciya, kuma sandwich ɗin yana da laushi kuma ana iya fitarwa, yakamata a cire abun da wuri-wuri don bada izinin hakan don kwantar da hankali a hankali a cikin iska ko ruwan zafi, don haka ƙarancin damuwa zai iya zama santsi kuma ba mai haske sosai ba, kuma amfani ba zai shafi ba.
6, haifar da bincike game da lahani na gaskiya a cikin kayayyakin da aka yi da allura
Sassan bayyane na narkewar tabo, hauka, fasa, polystyrene da plexiglass a wasu lokuta zasu iya ganin wasu kyalkyali sliver kamar filaments ta cikin haske. Ana kiran waɗannan waƙoƙin hauka masu haske ko fasa. Wannan shi ne saboda damuwa a cikin madaidaiciyar shugabanci na tashin hankali, da kuma bambancin kashi na ƙwayoyin polymer tare da kuma ba tare da daidaitawar gudana ba.
mai ƙarfi:
(1) Gusar da tsangwama da gas da sauran ƙazanta, kuma a bushe filastik ɗin gaba ɗaya.
(2) Rage zafin jiki na kayan, daidaita zafin jikin ganga ta ɓangarori, da ƙara zafin jikin mudu yadda yakamata.
(3) Kara karfin allura da rage saurin allura.
(4) orara ko rage ƙarfin bayan baya na pre-molding, rage saurin dunƙule.
(5) Inganta yanayin sharar mai gudu da rami.
(6) Tsabtace bututun ƙarfe, mai gudu da ƙofar yiwuwar toshewa.
(7) Bayan lalatawa, ana iya kawar da ƙwanƙwasawa ta hanyar haɗuwa: ana iya ajiye polystyrene a 78 ℃ na mintina 15, ko a 50 ℃ na awa 1, kuma ana iya zafin polycarbonate zuwa 160 ℃ na mintoci da yawa.
7, haifar da bincike na launi mara kyau na kayayyakin allura
Babban sanadin da mafita na launi mara kyau na allurar da aka ƙera abubuwa kamar haka:
(1) Yadaita yaduwar launin launi, wanda hakan yakan sanya samfurin kusa da ƙofar.
(2) kwanciyar hankali na zafin robobi ko launuka ba shi da kyau. Don daidaita yanayin launin launuka, samfuran samfuran dole ne a daidaita su, musamman kayan zafin jiki, yawan kayan aiki da zagayen samarwa.
(3) Don robobi masu kara kuzari, yanayin sanyaya na kowane ɓangare na ɓangarorin ya zama iri ɗaya gwargwadon iko. Ga sassan da ke da banbancin kaurin bango, ana iya amfani da launi don rufe bambancin launi. Ga sassan tare da kaurin bango iri ɗaya, yakamata a gyara kayan zafin jiki da yanayin zafin jiki.
(4) Wajibi ne don gyara matsayi da cika nau'in ɓangaren filastik.
8, haifar da bincike na launi da kuma luster lahani na allura molded kayayyakin
A karkashin yanayi na yau da kullun, farfajiyar da ke jujjuya sassan inginin da aka gina ta fi dacewa ta hanyar nau'in filastik, mai launi da kuma gamawar ginin. Amma galibi saboda wasu dalilai, launi na saman da lahanin haske na samfuran, saman duhu da sauran lahani. Sanadin da mafita sune kamar haka:
(1) finisharshen ƙarancin ƙira, tsatsa a farfajiyar kogon, ƙarancin shaye shaye.
(2) Tsarin zub da shara yana da lahani, don haka ya zama dole a ƙara sanyaya da kyau, tashar kwarara, polishing babbar hanyar kwarara, tashar shunt da ƙofar.
(3) Kayan zafin jiki da yanayin zafin jiki sun yi ƙasa, idan ya cancanta, ana iya amfani da hanyar dumama gida ta ƙofar.
(4) Matsawar sarrafawa tayi ƙasa ƙwarai, gudun yayi jinkiri sosai, lokacin allura bai isa ba, matsin lamba baya isa, wanda hakan ke haifar da rashin tsari da kuma yanayin duhu.
(5) Ya kamata a sanya robobi sosai, amma ya kamata a hana wulakanta kayan, dumama ya zama tsayayye, kuma sanyaya ya isa, musamman ga robobin bango masu kauri.
(6) Don hana abu mai sanyi daga shiga sassan, yi amfani da bazara mai kulle kai ko rage zafin jikin bututun idan ya cancanta.
(7) Anyi amfani da kayan sake sakewa da yawa, ingancin robobi ko launuka ba su da kyau, tururin ruwa ko wasu ƙazamta sun haɗu, kuma ingancin man shafawa ba shi da kyau.
(8) carfin matsewa ya isa.
9, haifar da bincike game da hauka a cikin kayayyakin da aka tsara
Akwai hauka a cikin kayayyakin gyare-gyaren allura, gami da kumfa da kumfa na ciki. Babban dalilin lahani shine tsangwama na gas (galibi tururin ruwa, gas mai narkewa, gas mai narkewa da iska). Kayyadaddun dalilan sune kamar haka:
1）. Inji:
(1) Ganga da dunƙulen suna sawa, ko kuma akwai mataccen kusurwa na kwararar abu yayin da suke wucewa ta kan roba da zoben roba, wanda zai ruɓe idan sun daɗe suna zafi.
(2) Idan tsarin dumama ba shi da iko kuma yanayin zafin ya yi yawa, ya zama dole a bincika ko akwai wata matsala tare da abubuwan dumamawa kamar thermocouple da murfin dumamawa. Zane zane bai dace ba, yana haifar da mafita ko sauƙin shigo da iska.
2）. Mould:
(1) Karancin hayaki.
(2) A gogayya juriya na mai gudu, ƙofa da rami a cikin mold ne babba, wanda sa gida zafi fiye da kima da kuma bazuwar.
(3) Rashin daidaiton rarraba ƙofa da rami da kuma tsarin sanyaya mara ma'ana zai haifar da dumama ba daidai ba da dumama cikin gida ko toshe hanyar wucewar iska.
(4) Hanyar sanyaya ta malalo cikin rami.
3）. Robobi:
(1) Idan damshin robobi ya yi yawa, yawan kayan da aka sake amfani da su sun yi yawa ko kuma akwai wasu abubuwa masu cutarwa (kwandunan suna da saukin ruɓewa), ya kamata robobin su bushe sosai kuma a cire abubuwan da aka kwashe.
(2) Don sha danshi daga yanayi ko daga mai kala, shima mai launin ya bushe. Zai fi kyau a sanya na'urar bushewa a kan inji.
(3) Adadin man shafawa da daskararru da aka kara a robobi sun yi yawa ko an gauraya ba daidai ba, ko kuma robobi suna da mayuka masu canzawa. Lokacin da digon dumama filastik ɗin da aka gauraya yake da wahalar la'akari, zai bazu.
(4) Roba an gurbata ta kuma hade ta da wasu robobi.
4）. Aiwatar:
(1) Lokacin saita zafin jiki, matsin lamba, gudun, matsa lamba ta baya, tsananin gudu mai narkewar mota yana haifar da lalacewa, ko kuma lokacin da matsi da saurin suka yi ƙasa kaɗan, lokacin allura, riƙewar matsa lamba bai isa ba, kuma matsin baya baya ma mai ƙarancin ƙarfi, saboda rashin ƙarfi mai ƙarfi da ƙarancin ƙarfi, ba shi yiwuwa a narke gas, wanda ke haifar da hauka. Ya kamata a saita zafin jiki da ya dace, matsa lamba, gudu da lokaci, kuma ya kamata a karɓi saurin allura da yawa
(2) backananan matsawar baya da saurin juyawa da sauri yana sanya iska ta shiga ganga a sauƙaƙe. Yayinda narkakken abun ya shiga cikin sifar, narkakken abun zai bazu lokacin da yayi zafi sosai a cikin ganga idan sake zagayowar yayi tsayi da yawa.
(3) materialarancin kayan abu mai yawa, babban abin ciyarwa, matsakaicin abu mai zafi ko ƙarancin zafin jiki duk yana shafar abin da ke kwarara da matsin lamba, da inganta samuwar kumfa.
10 Nazari kan dalilin hada hadadden kayan hadin filastik
Lokacin da zafin robobin da aka zubi suka haɗu a cikin rami a cikin hanyar madauri da yawa saboda ramin da aka saka, yankin tare da saurin gudu mai gudana da kuma yankin tare da katsewar kayan abu da ke kwarara, za a samar da haɗin haɗin haɗin layi saboda rashin haɗuwa. Bugu da kari, a yayin da aka cika shigar da allura ta kofar gida, za a sami hadewar hadewa, kuma karfin hadewar hadi ba shi da kyau. Babban dalilan sune kamar haka
1）. Aiwatar:
(1) lowaramin ƙarfin allura da sauri, ƙananan ƙananan ganga mai zafin jiki da ƙarancin zafin jiki yana haifar da sanyaya da wuri na narkakken abu a cikin sifar, wanda ke haifar da kabuwar weld
(2) Lokacin da karfin allura da sauri suka yi yawa, za a samu feshi da hadin fuska.
(3) Wajibi ne a ƙara saurin juyawa da matsin lamba don rage ɗanko da ƙara ƙwanan robobi.
(4) Filastik ya kamata a shanya shi da kyau, ya kamata a sake amfani da kayan sake yin amfani da su, wakilin saki mai yawa ko kuma rashin inganci zai bayyana hadewar mahadi.
(5) Rage ƙarfin matsawa, mai saukin shaye shaye.
2. Mould:
(1) Idan akwai ƙofofi da yawa a cikin rami ɗaya, yakamata a rage ko saita ƙofar a daidaita, ko saita kusa da mahaɗin walda yadda zai yiwu.
(2) Shaye tsarin ya kamata a kafa a cikin kabu na talakawa Fusion.
(3) Mai gudu ya yi yawa, girman tsarin wasan kwaikwayo bai dace ba, ya kamata a buɗe ƙofar don guje wa narkewar da ke gudana a kusa da ramin abin da aka saka, ko kuma a yi amfani da abin da ake sakawa kamar yadda zai yiwu.
(4) Idan kaurin bangon ya canza da yawa, ko kuma kaurin bangon ya yi yawa sosai, kaurin bangon sassan ya zama daidai.
(5) Idan ya cancanta, yakamata a saita fushin sosai a mahaɗin haɗin don sanya haɗin haɗin ya rabu da sassan.
3. Robobi:
(1) Ya kamata a saka man shafawa a cikin robobi da ƙarancin ruwa ko ƙwarin zafi.
(2) Akwai datti da yawa a robobi. Idan ya cancanta, maye gurbinsu da robobi masu kyau masu kyau.
11 、 Tantance abubuwan da ke haifar da alamun cacar baka a cikin kayanda aka sanya su
PS da sauran bangarorin filastik masu tsauri a ƙofar ta kusa da farfajiyar, tare da ƙofar a matsayin cibiyar samuwar ɓarna mai ƙarfi, wani lokacin ana kiranta da hira. Dalilin shi ne cewa lokacin da narkewar narkewar yayi yawa sannan kuma aka cika sifar a cikin yanayin kwararar ruwa, kayan gaban-karshe zasu takura kuma suyi kwangila da zaran ya tuntuɓi farfajiyar ƙirar, kuma narkewar ta gaba , kuma kayan sanyi na kwangila zasu ci gaba da zuwa gaba. Ci gaba da canzawa na tsari yana sa kayan abu ya gudana samaniya suna hira.
mai ƙarfi:
(1) Domin kara ganga mai zafin jiki, musamman yawan zafin jiki na bututun ƙarfe, yakamata a ƙara yawan zafin muddin.
(2) pressureara matsa lamba da sauri don sanya shi cika rami da sauri.
(3) Inganta girman mai gudu da ƙofa don hana juriya da yawa.
(4) Shaye shaye ya zama mai kyau, don saita babban isasshen sanyi mai kyau.
(5) Kada ku tsara sassan siraran.
12 、 Sanadin binciken kumburi da kumfawa da kayayyakin allura
Bayan demoulding, wasu sassan filastik suna kumbura ko kumfa a bayan murfin ƙarfe ko a cikin ɓangaren mai kauri sosai. Wannan ya faru ne saboda fadada iskar gas din da aka saki daga filastik daskarewa da tauri a ƙarƙashin hukuncin bugun cikin gida.
Solutions:
1. Tasiri mai tasiri. Rage zafin jiki na mudu, tsawaita lokacin buɗe buhunan, rage bushewa da zafin jiki na aiki na kayan.
2. Rage saurin cikawa, sake zagayowar tsari da juriya na kwarara.
3. theara ƙarfin riƙewa da lokaci.
4. Inganta yanayin cewa bangon bangaren yayi yawa ko kaurin ya canza sosai.
