Ainihin Abin da Screw Barrel Ke Yi
Screw da ganga suna aiki azaman madaidaicin ma'auni. Ga jerin kowane zagayowar:
- Ciyarwa- Filayen filastik suna sauke daga hopper zuwa yankin ciyarwa.
- Narkewa- Juyawa mai juyawa yana haifar da zafi mai ƙarfi. Haɗe da dumama ganga, pellets narke da damfara.
- Yin awo- Narke ya zama iri ɗaya a yanayin zafi da matsa lamba kafin allura.
- Allura- The dunƙule matsawa gaba kamar plunger, tura narkakkar robo a cikin mold.
Kowane nau'in ƙira - lissafin lissafi, yanki na yanki, jiyya a saman - yana shafar yadda waɗannan matakai huɗu ke faruwa. Rashin daidaituwa a kowane ɗayan su yana nunawa azaman matsalar samarwa.
Mataki na 1: Rabo L/D
Matsakaicin L/D (tsawon jirgin da aka raba ta hanyar diamita) shine mafi mahimmancin lamba akan takaddar. Yana sarrafa lokacin zama, haɓaka ingancin, da rarraba zafi.Yawancin aikace-aikacen gyare-gyaren allura na gaba ɗaya suna amfani da 20:1.
| Guduro | Nasiha L/D |
|---|---|
| PP, PE, PS (misali) | 18:1 – 20:1 |
| ABS, PC | 20:1 – 24:1 |
| PVC (zafi-m) | 16:1 – 20:1 |
| PET | 20:1 – 22:1 |
| Nailan (PA) | 18:1 – 20:1 |
| Abubuwan ƙarfafa GF | 20:1 – 24:1 |
Mataki na 2: Rabo Matsi
Matsakaicin matsawa (CR) yana auna nawa tashar dunƙule ke raguwa daga yankin ciyarwa zuwa yankin aunawa. Mafi girma CR yana damfara narkewa da ƙarfi - yana da kyau ga resin amorphous waɗanda ke yin laushi a hankali. Ƙananan CR ya fi sauƙi, wanda shine abin da kuke buƙata don abubuwan da ke da zafi ko fiber.
| Guduro | Rabon Matsi |
|---|---|
| ABS, PC, PMMA (amorphous) | 3.0 - 3.5: 1 |
| PP, PE, Nailan (Semi-crystalline) | 2.5 - 3.0: 1 |
| PVC | 2.0 - 2.5: 1 |
| PET | 2.3 – 2.6:1 |
| Ƙarfafa GF (≥15%) | 2.0 - 2.5: 1 |
Mataki na 3: Matsayin Yanki
Daidaitaccen madaidaicin allura ya kasu kashi uku. Matsakaicin kowane yanki yana da mahimmanci kamar jimlar L/D.
- Yankin Ciyarwa (L1):Tashoshi masu zurfi waɗanda ke karɓar ƙaƙƙarfan pellets daga hopper. Ya fi tsayi = ƙarin ƙarfin kayan aiki.
- Yankin Matsi (L2):Zurfin tashoshi yana raguwa a hankali. Yawancin narkewa yana faruwa a nan.
- Yanki mai aunawa (L3):Shallow, tashoshi masu daidaituwa. Yana tabbatar da yanayin narkewa iri ɗaya da matsa lamba kafin allura.
| Guduro | Ciyarwa (L1) | Matsawa (L2) | Mitar (L3) |
|---|---|---|---|
| PP / PE | 50% | 25% | 25% |
| ABS / PC | 40% | 40% | 20% |
| PET | 40% | 40% | 20% |
| Nailan (PA) | 35-45% | 35-40% | 20-25% |
| PVC | 35% | 50% | 15% |
Shawara ta 4: Material Barel
38CrMoALA - Daidaitaccen Baseline
Nanhaiya ta allura gyare-gyaren sukurori daga38CrMoALA gami karfe, zafi-magani da kuma kashe. Wannan kayan tushe yana ɗaukar daidaitattun thermoplastics kamar PE, PP, PS, da ABS da kyau, tare da rayuwar sabis na kusan.10,000-20,000 hoursƙarƙashin yanayin aiki na yau da kullun.
Nitriding
Gas nitriding a 500-560 ° C yana samar da Layer nitrided0.5-0.8mm kauritare da taurin950-1050 HV (~ 62 HRC). Wannan yana inganta juriyar lalacewa da kashi 30-40% idan aka kwatanta da karfe da ba a kula da shi ba. Matsayin mafi yawan aikace-aikacen gyare-gyaren allura da ke gudana marasa cika ko kayan da aka cika da sauƙi.
Nanhaiya mutant (ba zato) allura gyare-gyaren dunƙule - wanda ya dace da resin crystalline kamar PP, PE, da Nylon.
Bimetallic - Don Aikace-aikacen Abrasive
Ganga-gangan bimetallic suna da babban rufin ƙarfe mai jure lalacewa da aka haɗe da gangar jikin ganga. Tsarin bimetallic na Nanhaiya ya cimma waniTaurin ciki na 62 HRCta hanyar walƙiya mai ƙarfi mai ƙarfi a kusa da wuraren da ake sawa a cikin ganga.
| Aikace-aikace | Kayan dunƙulewa | Maganin Ganga |
|---|---|---|
| PE, PP, PS (ba a cika ba) | 38CrMoALA nitrided | Standard nitrided |
| ABS, PC, Nylon (ba a cika ba) | 38CrMoALA nitrided | Standard nitrided |
| PA + GF ≤30% | 38CrMoALA, mai kashewa + fushi | Nitrided ko bimetallic |
| GF abun ciki 15-50% | Gefen jirgin Bimetallic / TC | Bimetallic |
| PVC / resins masu lalata | Alloy mai jure lalata | Bimetallic (jin CR) |
| Carbon fiber cike | Tungsten carbide | TC-fesa busa |
Yanke shawara na 5: Diamita mai dunƙulewa da Girman harbi
Harbin ku na ainihi yakamata ya faɗi tsakanin35% da 70%na matsakaicin ƙarfin harbin dunƙule. A ƙasa 35%, abu yana zaune a cikin ganga tsayi da yawa kuma yana haɗarin lalacewa. Sama da kashi 70%, dunƙule ba zai iya murmurewa cikin sauri ba a cikin zagayowar.
A ƙasa akwai saitunan gama gari da ake samu daga Nanhaiya:
| Adadin allura (g) | Makullin Ø × Tsawon (mm) | Ganga Ø × Tsawon (mm) |
|---|---|---|
| 30–90 | Φ30×900 | Φ85×860 |
| 60-125 | Φ35×910 | Φ85×860 |
| 100-150 | Φ38×935 | Φ95×900 |
| 125-300 | Φ42×1030 | Φ105×1110 |
| 250-400 | Φ45×1210 | Φ115×1165 |
| 300-500 | Φ50×1300 | Φ125×1260 |
| 500-700 | Φ60×1380 | Φ140×1350 |
| 700-1000 | Φ70×1790 | Φ160×1685 |
| 1000-1500 | Φ160×3500 | Φ270×3200 |
| 1300-2500 | Φ170×3415 | Φ317×3380 |
Nanhaiya allura sannu a hankali dunƙule - mafi kyau ga amorphous resins kamar ABS, PC, da PMMA.
Alamomin Gargadi na Yanzu Ba daidai ba ne don Aikin
- Baƙar fata ko alamar kuna- Abubuwan ƙasƙanci daga lokacin zama mai yawa ko wuri mai zafi. Bincika yankunan zafin ganga da share sharewa.
- Nauyin harbi mara daidaituwa- Sau da yawa sawa bawul ɗin da ba zai dawo ba ko kuma wuce gona da iri-iri-zuwa ganga yana barin koma baya.
- Alamun wasa a saman- Danshi ko gas a cikin narkewa. Yana iya nuna rashin isassun bushewa ko kuma juzu'i na juzu'i wanda baya fitowa da kyau.
- Jinkirin dawowa / tsawon lokacin zagayowar- Ƙarfin filastik bai isa ba. Wataƙila diamita na dunƙule yana buƙatar haɓaka.
- Babban guntu akan canje-canjen launi- Poor hadawa a cikin metering zone. Maddock ko shinge mai haɗawa da aka ƙara zuwa dunƙule yakan magance wannan.
Abin da za ku gaya wa Maƙerin ku Lokacin Neman Magana
- Alamar inji da samfurin- ko diamita da flange girma don injunan da ba daidai ba
- Guduro(s) na farko- sun haɗa nau'in filler da kashi idan an zartar
- Girman girman harbi- mafi ƙaranci kuma mafi girma a cikin grams
- Lokacin zagayowar manufa
- Matsalolin yanzu da kuke ƙoƙarin warwarewa- idan akwai
Samu Shawarar Fasaha daga Nanhaiya
Muna amsawa a cikin sa'o'i 12. Teamungiyar injiniyoyinmu na iya ƙididdige madaidaicin juzu'i na juzu'i, darajar kayan aiki, da girma don injin ku da guduro - kafin ku ƙaddamar da zance.
