Injection dunƙule rabo L/DTsawon aiki yana raba ta hanyar dunƙule diamita, kuma mafi yawan alluran sukurori suna gudana 18:1 zuwa 25:1. Ga abin da babu takamaiman takardar da ya gaya muku: ba za ku iya canza L/D akan injin da kuka mallaka ba. Tsawon yana daidaitawa ta ganga. Abin da zaku iya canzawa shinedunƙule diamita, kuma a cikin ƙayyadadden ganga cewa zaɓi ɗaya yana motsa L/D, ƙarfin harbi, da matsa lamba na allura tare, a gaba da gaba. Karamin dunƙule yana ba da L/D mafi girma, ƙaramin harbi, da ƙarin matsa lamba. Daidaita waccan kasuwancin zuwa resin ku da ɓangaren ku, kuma yawancin tambayoyin L/D suna amsa kansu.
Abin da rabon L/D ke nufi akan Screw allura
L/D shine tsawon aiki na dunƙule (L) wanda aka raba ta wurin diamita na waje (D). Screw sau 22 fiye da faɗinsa yana da L/D na 22:1.
Ma'auni na ma'auni tare da girma. A dunƙule 40mm a 22:1 yana da tsawon aiki na 880 mm. Tsawon 80mm a 22:1 yana da tsayin mm 1,760. Rabo iri ɗaya, inji daban-daban.
Abin da rabo a zahiri ya bayyana shi nenawa titin jirgi zai yi aikin sa. Ciyarwa, narkewa, da aunawa duk suna faruwa tare da wannan tsayin. Ƙarin tsayi yana nufin ƙarin ƙarfin narkewa da ƙarin haɗuwa. Ƙananan tsayi yana nufin ƙasa da duka biyun, kuma ƙarancin lokaci don abu ya zauna da zafi.
Yawancin alluran sukurori suna ƙasa tsakanin 18: 1 da 25: 1, tare da 20: 1 zuwa 22: 1 ƙasa gama gari akan injunan manufa ta gaba ɗaya. Jagoran ginshiƙi ya ƙunshi cikakken hoto a cikin muallura gyare-gyaren dunƙule ganga jagora.
Me yasa allurar L/D ta fi Extrusion L/D gajarta
Extruders yawanci gudu 25:1 zuwa 33:1. Sukulan allura sun kasance sun fi guntu, kuma dalili shine sake zagayowar, ba al'ada ba.
Screw na extruder yana jujjuyawa akai-akai. Abu yana shiga a gefe ɗaya, yana wucewa, ya fita a ɗayan. Babu wani abu da ke jira.
Maganin allura yana aiki a fashe. Yana jujjuya don yin filastik harbi ɗaya, ja da baya, sannan ya tsaya. Yana yin allura, kuma mold ya yi sanyi. A lokacin duk wannan, narke riga a cikin ganga yana zaune har yanzu kuma yana da zafi.
Wannan jira shine duka bambancin. Ganga mai tsayi yana riƙe da ƙarin narkewa, kuma akan injin allura, ƙarin narkewa yana nufin ƙarin kayan da ke jira ta ƙarin hawan keke. Don guduro mai saurin zafi, ƙarin tsayin daka ba ƙari ba ne. Yana da karin tarihin thermal.
Don haka ƙirar allura tana daidaita ƙarfin narkewa akan lokacin zama, yayin da extrusion galibi kawai yana siyan ƙarfin narkewa.
Abin da Babu Wanda Ya Fada Maka: Ba za ku Iya Canza L/D ba
Labarai game da L/D suna magana kamar kuna samun lamba. A kan injin da kuka riga kuka mallaka, ba ku.
L an gyara shi ta ganga.Ganga wani jirgin ruwa ne da aka keɓe a cikin injin ɗin, tare da wuraren dumama, maƙogwaron abinci, da hawa duk an gina shi kusan tsayi ɗaya. Babu wanda ke yin tsayin ganga.
Don haka kawai madaidaicin da ya rage a cikin L/D shine D, diamita na dunƙule. Canja diamita, kuma rabo ya canza tare da shi, saboda tsayin da ke sama da layin baya motsawa.
Wannan shine dalilin da ya sa masu ginin injin ke lissafa diamita biyu ko uku don injin iri ɗaya. Ba su ba ku girman harbi uku ba. Suna ba ku maki uku akan madaidaicin ciniki, kuma girman harbi ɗaya ne kawai daga cikin abubuwan da ke motsawa.
Screw Dimeter: Lever Mai Matsar Komai
A cikin tsayayyen ganga, zaɓi ɗaya yana motsa abubuwa huɗu lokaci ɗaya. Fahimtar wannan tebur kuma kun fahimci allurar L/D.
| Idan kun zaɓi ... | Karamin dunƙule diamita | Girman diamita na dunƙule |
|---|---|---|
| rabon L/D | Mafi girma(L ɗaya L, ƙarami D) | Kasa(L ɗaya L, babba D) |
| Iyawar harbi | Karami(ƙasa girma a kowace mm na bugun jini) | Ya fi girma |
| Akwai matsi na allura | Mafi girma(ƙarfi ɗaya akan ƙaramin yanki) | Kasa |
| Ƙarfin narkewa kowace harbi | Mafi kyau(ƙarin L/D don ƙarancin abu) | Ƙananan karimci |
| Lokacin zama don wani bangare da aka ba shi | Gajere(harbin yana amfani da ƙarin ƙaramar ganga) | Ya fi tsayi |
| Kwat da wando | Ƙananan ƙananan sassa, ganuwar bakin ciki, babban danko da resins masu zafi | Manyan harbe-harbe, resins na kayayyaki, sassa masu kauri |
Karanta layin matsin lamba kuma, saboda yana yanke shawarar ƙarin ayyuka fiye da yadda mutane suke tsammani. Na'ura mai aiki da karfin ruwa ko lantarki na injin yana isar da tsayayyen ƙarfi zuwa bayan dunƙule. An raba matsin lamba ta yanki. Karamin dunƙule yana da ƙasan fuskar fuska, don haka ƙarfin ɗaya yana haifar da matsi mafi girma.
Wannan shine dalilin da ya sa aikin bangon bakin ciki da danko yakan sauko a kan karamin dunƙule: yana iya tura narke cikin wani rami mai zurfi wanda babban dunƙule ba zai iya cikawa ba. L/D mafi girma wanda ya zo tare da shi shine kari, ba daidaituwa ba.
Kuma karanta layin zaman ma. Shine wanda ke yanke hukunci a hankali ko PC ɗinku ya yi rawaya.
Yadda L/D ke Shafar Girman Harbin
A taƙaice, L/D baya saita girman harbi. Diamita da bugun jini suna yi: ƙarar harbi shine yanki na giciye na dunƙule wanda aka ninka ta nisan tafiya.
Amma akan na'ura na gaske ba za ku iya raba su ba, saboda diamita guda ɗaya wanda ke saita harbinku kuma yana saita L/D ɗin ku. Zaɓi ƙaramin dunƙule don ƙaramin daidaitaccen sashi, kuma kun zaɓi L/D mafi girma a lokaci guda.
Sakamakon aikace-aikacen yana da farin ciki. Ƙunƙarar da ke ba ku ɗan ƙaramin harbi kuma yana ba ku ƙarin tsayin narkewa a kowace gram na abu da matsananciyar allura. Waɗannan kaddarorin guda uku sun dace da ayyuka iri ɗaya, wanda shine dalilin da ya sa cinikin ke aiki da tsabta sau da yawa fiye da a'a.
Inda ya daina farin ciki shine lokacin da kuka tilasta wani sashi akan kuskure mara kyau. Gudun ƙaramin harbi akan babban dunƙule diamita kuma kuna samun mafi munin duka biyu: ƙaramin L/D, ƙaƙƙarfan ƙarar ganga dangane da harbin ku, da kayan da ke kewaya ta cikin zafi na dogon lokaci.
Lokacin Mazauna: Ingancin Kisan da Zaku Iya Lissafta
Lokacin zama shine tsawon lokacin da wani yanki na polymer da aka bayar ya kasance yana zafi a cikin ganga kafin a yi masa allura. Ita ce mafi ƙarancin ƙima a cikin gyare-gyaren allura, kuma kuna iya ƙididdige shi cikin daƙiƙa talatin.
Lokacin zama ≈ (ƙarfin harbin ganga ÷ girman harbin ku) × lokacin zagayowar
Duka iyakoki a cikin raka'a ɗaya. Ɗauki ƙarfin harbi daga ƙimar injin.
Yi aiki misali. Injin da aka ƙididdigewa a 200 g na ƙarfin harbi, yana tafiyar da kashi 20 g akan zagaye na daƙiƙa 30. Matsakaicin shine 10, don haka narkewa yana zaune ta kusan zagayowar goma. Lokacin zama yana kusan daƙiƙa 300, ko mintuna biyar.
Minti biyar a zafin jiki narke yana da dogon lokaci don PC, POM, PET, ko PVC. Babu wani abu game da saitunanku da ba daidai ba. Bangaren ya yi ƙanƙanta sosai ga ganga, kuma kayan yana dafawa yayin da yake jiran juyowar sa.
Yanzu matsar da wannan aikin zuwa ƙaramin dunƙule. Ƙarfin harbi ya ragu zuwa, a ce, 80 g. Wannan ɓangaren 20 g ɗin yanzu yana amfani da rubu'in ganga, narke yana zama ta zagayowar huɗu maimakon goma, kuma lokacin zama ya faɗi kusan mintuna biyu.
Ba ku canza madaidaici ba. Kun canza diamita na dunƙule, kuma matsalar lalata ta tafi tare da shi.
20-80% Shot Capacity Bkuma
Jagorar masana'antu da aka fi ambata shine kiyaye harbin ku a wani wuri tsakanin kusan kashi 20% zuwa 80% na ƙarfin harbin na'ura. Tabbatar da band ɗin akan jagorar injin ku, amma dabarar da ke bayan sa tana riƙe ko'ina.
A ƙasa da bkuma, lokacin zama yana da tsawo. Kayan abu yana yin tafiye-tafiye da yawa ta wurin zafi, kuma resins masu zafin zafi suna raguwa. Wannan ita ce gazawar da dabarar da ke sama ta kama.
Sama da bandeji, abu biyu karya. Babu isassun ganga da za ta iya riƙe matashin matashin kai, don haka tattarawa yana samun rashin daidaituwar harbi don harbi. Kuma dunƙule yana da ƙarancin lokaci da tsayi don narke kusan cikakkiyar ganga na abu, don haka ingancin narkewa yana wahala daidai lokacin da kuke tambayar mafi yawansa.
Ƙasa a tsakiyar band kuma inji yana da dakin aiki. Idan sashinka yana zaune a wajensa, gyara daidai shine diamita daban-daban, ko na'ura daban, ba tsarin saitin tsari ba.
Yadda L/D ke Shafar Ingancin Narke
Tsawon yana iya narkewa, kuma ƙarfin narkewa yana da inganci.
Ƙarin L/D yana ba da ƙarin cikakken narkewa.Ƙaƙƙarfan pellets suna da ƙarin tafiya zuwa bangon ganga mai zafi, don haka kaɗan daga cikinsu suna tsira kamar yadda ba a narkewa. Haɗaɗɗen ƙwanƙwasa da nau'ikan ruwan tabarau a cikin ɓangaren sune gazawar narkewa, kuma tsayi yana yaƙe su.
Ƙarin L/D yana ba da ƙarin narke mai kama.Zazzabi yana fitowa, launi da filler suna rarraba mafi kyau, kuma narkewar zuwa zoben rajistan ya fi dacewa daga harbi zuwa harbi. Wannan yana nunawa a matsayin taga mai faɗin tsari.
Ƙarin L/D kuma yana ba da ƙarin tarihin zafi.Tsawon tsayin da ya narke sosai shima yana riƙe kayan ya daɗe, kuma ga PVC, PC, POM, da PET, wannan farashi ne, ba fa'ida ba.
Don haka ingancin narkewa ba lamari bane na ƙari yana da kyau. Yana da ma'auni: tsayin tsayi don narke gaba ɗaya, ba girman ganga mai yawa ba cewa kayan yana jira da yawa don amfani. Lokacin da ƙarfin narkewa shine ƙayyadaddun ƙayyadaddun ku, shingen shinge yana ɗaga shi ba tare da ƙara milimita na ganga ba.
Zaɓi L/D da Diamita ta Guduro da Sashe
Sanya cinikin tare kuma zaɓin ya faɗi daga resin da ɓangaren.
| Halin ku | Ka karkata zuwa ga | Me yasa |
|---|---|---|
| Ƙananan sassa na daidaitaccen katanga mai bakin ciki | Karamin dunƙule, mafi girma L/D | Matsayin allura mafi girma ya cika sassan bakin ciki; mai kyau narkewa da gram; gajeren wurin zama |
| Guduro mai saurin zafi (PC, POM, PET, PVC) | Ƙananan dunƙule don harbi; guntun ƙarshen L/D bkuma | Lokacin zama shine abokan gaba. Rike harbin babba dangane da iyawar ganga |
| Resin injiniya mai girman danko | Karamin dunƙule, mafi girma L/D | Yana buƙatar matsa lamba don cika da tsayi don narkewa sosai |
| Manyan harbe-harbe, guduro kayayyaki (PE, PP, PS) | Babban dunƙule, ƙananan L/D | Ƙarfin ƙarfin; waɗannan resins suna jure wa rage tsayin narkewa |
| Sassan bango mai kauri, jinkirin hawan keke | Babban dunƙule, agogon wurin zama | Dogayen hawan keke suna ninka lokacin zama. Maimaita lissafin kafin aikata |
| Gilashi mai cike da ƙura ko ƙura | Diamita a kowane bangare; canzafarfajiya | L/D yana bin sashin. Amsar sawa itace bimetallic bore, ba tsayi daban ba |
| Ba ya narkewa a babban fitarwa | Diamita ɗaya; shamaki dunƙule | Kuna buƙatar ƙarfin narkewa, ba tsayin ganga ba. Ganga ba ta canzawa ko ta yaya |
Kula da layuka biyu na ƙarshe. Biyu daga cikin mafi yawan matsalolin da masu gyara ke kawo mana ba matsalolin L/D ba ne kwata-kwata, kuma siyan diamita daban-daban don magance su yana lalata kuɗin.
Kuskuren L/D gama gari a cikin Gyaran allura
- Ana kwafin extrusion L/D.Lamba 30:1 daga tebirin extruder da aka yi amfani da su a cikin dunƙule allura ya yi watsi da matsalar lokacin zama wanda ke bayyana gyare-gyaren allura. Injin biyu suna yin ayyuka daban-daban.
- Zaton ya fi tsayi.Ƙarin tsayi ya fi narkewakumakarin tarihin thermal. A kan guduro mai saurin zafi, na biyu ya yi nasara kuma kayan ya ragu.
- Yin watsi da rabon harbi zuwa iya aiki.Mafi yawan matsalar ingancin da muke gani an gano ta zuwa lissafi ita ce ƙaramin sashi dafa abinci a cikin babban ganga. Babu wanda ke duba ta, saboda ba a kan kowane allon saiti ba.
- Gaskantawa L/D na iya canzawa akan injin da ke akwai.Ba zai iya ba. Ganga yana saita L. Diamita ne kawai naku don zaɓar.
- Laifin L/D don matsalar narkewa.Idan unnalk ya bayyana a babban fitarwa kawai, ƙarfin narkewar ku gajeru ne, ba ganga ba. Wani shingen shinge yana gyara wannan a cikin ganga ɗaya.
- Laifin L/D don matsalar lalacewa.Faɗuwar fitarwa a cikin gudu iri ɗaya ana sawa sharewa, ba lissafi ba. Auna shi kafin ku sake tsara wani abu.
Yadda Ake Bada Umarnin Dama
Mai yin dunƙulewa yana ƙira daga abin da kuke gaya musu. Aika waɗannan, kuma diamita da shawarwarin lissafi suna biye.
- Alamar inji, samfuri, da diamita na dunƙule na yanzu.Hoton farantin suna ya rufe yawancinsa, kuma yana gaya mana tsawon ganga da kuke aiki a ciki.
- Ƙarfin harbin injin,idan kun san shi, da ainihin nauyin sashin ku.
- Lokacin zagayowar.Tare da lambobi biyu a sama, ana iya ƙididdige lokacin zama a gare ku.
- Resin, sa, da abun ciki mai filler.Wannan yana tafiyar da bayanin martabar matsawa da jiyya na saman kamar diamita.
- Aibi da kuke so ya tafi.Yellowing points a wurin zama. Unmelts yana nuna ƙarfin narkewa. Gajerun harbi suna nuna matsi ko a zoben dubawa. Kowannensu yana da amsa daban.
- Zane, ko dunƙulewar da kuka sawa.Ko dai bari mu yi gini ga injin ku. Ana auna ɓangaren sawa akan kayan aikin CMM zuwa ±0.01 mm kuma an sake gina ma'aunin lissafi.
Me yasa Aiki Da Nanhaiya
Aiko mana da nauyin ɓangaren, lokacin zagayowar, da ƙirar injin, kuma za mu gudanar da lissafin lokacin zama kafin mu faɗi wani abu. Wani lokaci amsar ita ce diamita daban-daban. Wani lokaci yana da shinge mai shinge a cikin ganga da kuke da shi. Lokaci-lokaci yakan zama aikinku na kan wata na'ura daban, kuma za mu faɗi haka.
Lokacin da sabon dunƙule shine amsar, Nanhaiya ta ginaallura gyare-gyaren sukurorida ganga na fiye da shekaru ashirin, a cikin 38CrMoAlA, 42CrMo, SKD-61, da bakin karfe, nitrided ko bimetallic tare da 2.5-3 mm tungsten mai ɗaukar alloy Layer har zuwa 62 HRC inda abinci ya buƙaci shi.
Muna gina zanen ku, ƙirar injin ku, ko samfurin sawa, tare damasu maye gurbinsumasu jituwa tare da manyan samfuran injina, mafi ƙarancin tsari na saiti ɗaya, da ƙima a cikin sa'o'i 12.
Yaƙin rawaya, rashin narkewa, ko gajeriyar harbi? Aika samfurin injin ku, nauyin sashi, lokacin zagayowar, da guduro. Za mu gaya muku ko L/D ne, diamita, ƙarfin narkewa, ko lalacewa, da faɗi cikin sa'o'i 12.
Sami Shawarar ScrewTambayoyin da ake yawan yi
Menene rabon L/D na al'ada don dunƙule gyare-gyaren allura?
Yawancin sukulan allura suna gudana tsakanin 18:1 da 25:1, tare da 20:1 zuwa 22:1 na gama gari akan injunan manufa ta gaba ɗaya. Resins masu zafin zafin jiki sun yarda da guntun ƙarshen saboda abu yana ciyarwa ƙasa da zafi. Robobin injiniya waɗanda ke buƙatar narke sosai suna jin daɗin ƙarshen ƙarshen.
Zan iya canza rabon L/D akan injin gyare-gyare na allura?
Ba kai tsaye ba. Tsawon yana daidaitawa da ganga, wanda aka sanya a cikin injin. Abin da zaku iya canzawa shine diamita na dunƙule, kuma saboda L yana zama ɗaya, ƙaramin diamita yana ba da L/D mafi girma ta atomatik. Wannan zaɓin guda ɗaya kuma yana canza ƙarfin harbinku da matsin allura da ake samu.
Shin rabon L/D yana shafar girman harbi?
A kaikaice, kuma ba tare da rabuwa ba. Girman harbi ya fito daga diamita na dunƙule da bugun jini, ba daga L/D ba. Amma akan tsayayyen ganga, diamita wanda ke saita harbin ku shima yana saita L/D ɗin ku. Zaɓi ƙaramin dunƙule don ƙaramin harbi, kuma kuna samun L/D mafi girma da matsa lamba mafi girma a lokaci guda.
Ta yaya zan lissafta lokacin zama a cikin gyaran allura?
Raba ƙarfin harbin injin ta ainihin girman girman ku, sannan ninka ta lokacin zagayowar. Na'ura mai nauyin gram 200 da ke aiki da sashin 20 g akan zagaye na daƙiƙa 30 yana ba da kusan daƙiƙa 300, ko mintuna biyar, na zama. Wannan shine dogon lokaci don riƙe PC, POM, PET, ko PVC a zafin jiki narke.
Me yasa allurar L/D ta fi guntu L/D extrusion?
Domin allurar dunƙule tana aiki cikin fashe. Yana yin robobi, sannan ya tsaya yayin da injin ɗin ke yin allura kuma ƙirar ta yi sanyi, kuma narkewar da ke cikin ganga tana yin zafi gaba ɗaya. Wani extruder yana ci gaba da gudana kuma babu abin jira. Tsawon tsayin ganga akan injin allura ƙarin tarihin zafi ne, ba kawai ƙarin ƙarfin narkewa ba, don haka sukulan allura suna zama gajarta.
Kashi nawa na iyawar ganga zan yi amfani da harbin?
Jagorancin da aka ambata kusan kusan kashi 20% zuwa 80% na ƙimar harbi, kuma littafin injin ku shine iko. A ƙasan wannan rukunin, lokacin zama yana ɗaukar dogon lokaci kuma abubuwan da ke da zafi suna raguwa. Sama da shi, babu ɗaki don ingantaccen matashin kai da ƙarancin lokacin narka ganga kusan cikakke.
Shin L/D mafi girma ya fi kyau don gyaran allura?
Ba ta atomatik ba. Ƙarin tsayi yana ba da ƙarin cikakken narkewa da kuma narke iri ɗaya, wanda ya inganta inganci. Hakanan yana ɗaukar ƙarin kayan zafi na tsawon lokaci, wanda ke lalata resins masu zafin zafi. L/D daidai yana narkar da kayan ku gaba ɗaya ba tare da riƙe shi fiye da yadda ake buƙata ba.
sassana suna rawaya. Shin wannan matsalar L/D ce?
Yawancin lokaci matsala ce ta lokacin zama, wacce matsala ce ta girman-zuwa ganga. Gudanar da lissafin mazaunin farko. Idan ƙaramin sashi yana dafa abinci a cikin babban ganga, babu saitin zafin jiki da kuma wani nau'in juzu'i da zai gyara shi. Karamin diamita na dunƙule, ko ƙaramin injin, zai.
