Bayanan kula 10 game da injinan gyaran nailan #roba na filastik

Nailan yana da aiki na musamman, don haka ana amfani da shi sosai a cikin motoci, kayan lantarki da na lantarki, tsarin injina, kayan wasanni, yadi, da sauransu. Duk da haka, rage girman motoci, yawan aiki mai yawa na kayan lantarki da na lantarki, da kuma nauyin kayan injina yana ƙaruwa, buƙatun da buƙatun aiki na nailan suna ƙaruwa a hankali. Don haka gyaran nailan yana da mahimmanci musamman.

Gargaɗi game da gyaran nailan

1. Saitin zafin jiki na ganga

(1) Saboda nailan polymer ne mai lu'ulu'u, yana da wurin narkewa a bayyane. Zafin nailan a cikin ganga yayin allura ya dogara da aikin resin da kansa, injin da kuma siffar samfurin.

(2) Idan zafin kayan ya yi yawa, zai iya haifar da rashin launi, karyewa da zare na azurfa cikin sauƙi roba sassa, kuma idan zafin kayan ya yi ƙasa sosai, zai iya sa kayan ya yi tauri sosai kuma yana iya lalata mold da sukurori.

(3) Gabaɗaya, mafi ƙarancin zafin narkewar PA6 shine 220℃, kuma na PA66 shine 250℃. Saboda rashin kyawun yanayin zafi na nailan, bai dace a zauna a cikin ganga na dogon lokaci a babban zafin jiki don guje wa canza launi da canza launin kayan ba. A lokaci guda, saboda nailan yana da kyakkyawan ruwa, yana gudana da sauri bayan zafin ya wuce wurin narkewar sa.

2. Saitin zafin jiki na Mould

(1) Zafin mold yana da wani tasiri akan lu'ulu'u da raguwar molding. Zafin mold yana tsakanin 80 zuwa 120°C.
Zaɓi zafin mold mai yawa, yawan lu'ulu'u, ƙaruwar juriya ga lalacewa, tauri, modulus mai laushi, raguwar shan ruwa, ƙaruwar raguwar mold na samfurin, ya dace da samfuran kauri; zaɓi ƙarancin zafin mold, ƙarancin lu'ulu'u, kyakkyawan tauri, tsayi Mafi girma, ƙimar raguwa ya ragu, ya dace da samfuran siriri tare da kyakkyawan bayyanawa.

(2) Idan kauri na bango ya fi 3mm, ana ba da shawarar amfani da mold mai ƙarancin zafin jiki a 20 ~ 40℃. Don kayan da aka ƙarfafa gilashi, zafin mold ɗin ya kamata ya fi 80°C.

(3) Kula da zafin jiki na molds inda bangon samfurin ya yi siriri kuma yana da wahalar samarwa ko kuma yana buƙatar babban lu'ulu'u. Idan samfurin yana buƙatar wani matakin sassauci, galibi ana amfani da sarrafa zafin ruwan sanyi.

3. Kauri na bango na samfurin

Matsakaicin tsawon kwararar nailan shine 150 zuwa 200, kuma kauri na bango na samfurin bai gaza 0.8mm ba, yawanci 1 zuwa 3.2mm. Bugu da ƙari, raguwar samfurin yana da alaƙa da kauri na bango na samfurin. Yayin da kauri na bango, haka girman raguwar yake.

4. Shaye-shaye

Darajar kwararar resin nailan kusan 0.03mm ne, don haka ya kamata a sarrafa ramin iska a ƙasa da 0.025.

5. Masu gudu da ƙofofi

Girman ramin ƙofar bai kamata ya zama ƙasa da t 0.5 ba (t shine kauri na ɓangaren filastik). Idan aka yi amfani da ƙofofi masu nutsewa, ƙaramin diamita na ƙofar ya kamata ya zama 0.75mm.

6. Jerin abubuwan cika gilashi

A lokacin gyaran nailan, rage zafin mold, ƙara matsin lamba na allura, da rage zafin kayan zai rage yawan raguwar nailan zuwa wani mataki, wanda hakan zai sa samfurin ya fi saurin lalacewa saboda ƙaruwar matsin lamba na ciki. Misali, ƙimar raguwar na PA66 shine 1.5% zuwa 2%, kuma ƙimar raguwar na PA6 shine 1% zuwa 1.5%. Bayan ƙara ƙarin fiber na gilashi, ana iya rage ƙimar raguwar zuwa kusan 0.3%.

Kwarewa ta aiki ta nuna mana cewa yawan zaren gilashi da ake ƙarawa, haka nan raguwar raguwar resin nailan ke raguwa. Duk da haka, ƙara zaren gilashi da yawa zai haifar da zaren da ke iyo a saman kuma rashin jituwa. Gabaɗaya, ƙara kashi 30% yana da tasiri mai kyau.

7. Amfani da kayan da aka sake sarrafa su

Zai fi kyau kada a wuce sau uku don guje wa canza launin samfurin ko raguwar halayen jiki da na inji. Ya kamata a sarrafa adadin aikace-aikacen ƙasa da 25%. Yawan amfani da shi zai haifar da sauye-sauye a yanayin aiki. Dole ne a busar da cakuda kayan da aka sake yin amfani da su da sabbin kayan.

8. Umarnin aminci

Lokacin da kake kunna resin nailan, ya kamata ka fara kunna zafin bututun, sannan ka dumama ganga. Idan bututun ya toshe, kada ka fuskanci ramin bututun don hana narkewar ganga daga fitowa kwatsam saboda tarin matsi da ke tattare da shi da kuma haifar da haɗari.

9. Amfani da wakilin saki

Amfani da ƙaramin adadin sinadarin sakin jiki wani lokacin yana iya ingantawa da kuma kawar da lahani kamar kumfa. Maganin sakin kayan nailan na iya zama zinc stearate, farin mai, da sauransu, ko kuma a haɗa shi da manna a yi amfani da shi. Dole ne adadin ya zama ƙarami kuma ko da lokacin da aka yi amfani da shi don guje wa lahani a saman samfurin. Ya kamata a zubar da sukurori lokacin da aka rufe injin don hana sukurori karyewa yayin samarwa na gaba.

10. Bayan aiwatarwa

(1) Ana buƙatar maganin zafi bayan an samar da samfurin.

Hanyoyin da aka fi amfani da su: A cikin ruwan zafi mai zafi kamar man ma'adinai, glycerin, da paraffin mai ruwa-ruwa, zafin maganin zafi ya kamata ya kasance daga 10 zuwa 20°C sama da zafin amfani. Lokacin magani ya bambanta dangane da kauri na bango na samfurin. Kauri shine mintuna 10 zuwa 15 idan kauri bai wuce mm 3 ba, kuma kauri shine mintuna 3 zuwa 20. Lokacin 6mm shine mintuna 15 zuwa 30. Ya kamata a sanyaya kayayyakin da aka yi wa zafi a hankali zuwa zafin ɗaki don hana sake farfaɗo da damuwa a cikin samfuran da aka haifar da sanyaya kwatsam. (2) Ya kamata a yi maganin rage danshi bayan an samar da samfurin.

Ana yin maganin sanyaya danshi ne galibi akan samfuran da ke da ɗanɗanon muhalli mai yawa. Akwai hanyoyi guda biyu: ɗaya ita ce hanyar sanyaya danshi a cikin ruwan tafasa; ɗayan kuma ita ce hanyar sanyaya danshi a cikin ruwan potassium acetate (rabowar potassium acetate da ruwa shine 1.25:1, wurin tafasa shine 121°C).

Hanyar sarrafa danshi ta ruwan tafasa abu ne mai sauƙi, matuƙar an sanya samfurin a cikin yanayi mai danshi na 65% don cimma daidaiton shan danshi, amma yana ɗaukar lokaci mai tsawo, yayin da hanyar sarrafa danshi ta ruwan potassium acetate ke buƙatar acetic acid a zafin aiki na 80 zuwa 100°C Hanyar sarrafa danshi ta ruwan potassium, lokacin sarrafawa ya dogara ne akan kauri na bango na samfurin, kimanin awanni 2 lokacin da kauri na bango ya kai 1.5 mm, kimanin awanni 8 lokacin da kauri na bango ya kai 3 mm, da kuma awanni 16 zuwa 18 lokacin da kauri na bango ya kai 6 mm.