Zaɓi Harshe 
A cikin samarwa da sarrafawa na samfuran roba na matsawa, roba molds kayan aiki ne masu mahimmanci don sarrafawa da tabbatarwa samfurin geometry, girman taro , da kuma yarda da juzu'i na girma . The zane da kuma masana'antu ingancin kyawon tsayuwa kai tsaye kayyade daidaiton girma, bayyanar saman , kuma ƙimar cancantar ƙarshe na samfuran roba, kuma yana aiki azaman tushen tushe don cimmawa manyan kayan amfanin gona na roba.
Abubuwan roba galibi ana kera su hada danyen roba tare da hada abubuwa daban-daban , bi da sarrafa a karkashin high zafin jiki da kuma high matsa lamba yanayi. Ana Dukurar mahadi a cikin kogon mold , Inda yake gudana kuma ya cika tsarin ramin da aka tsara da kuma tsagi. Ta hanyar crosslinking halayen , a ƙarshe an rikitar da fili zuwa vulcanized roba kayayyakin tare da m aikace-aikace darajar.
Ana amfani da wannan tsari sosai a ciki roba mold masana'antu kuma high-daidaici silicone roba mold kafa.
1. Mold Materials da Sabis muhDuki a matsayin Tushen gurɓatawa da lalata
A halin yanzu, mafi roba molds ana kera su daga P20 matsakaici-carbon karfe ko 45 # karfe , wanda ya kasance na al'ada zafi-aiki mold karfe . Karkashin dogon lokaci yanayin vulcanization mai zafi , Ƙaƙƙarfan ƙuraje suna da sauƙi ga nau'ikan lalacewa da gurɓatawa:
Gubawar Oxidation na thermal
Lokacin da aka fDukasa ƙwayoyin ƙwayoyin cuta zuwa yanayin zafi mai zafi, halayen iskar shaka suna faruwa a tsakanin farfajiyar mold da oxygen a cikin iska, suna kafawa. oxidation gurbatawa spots a saman kogon.
Rubbers marasa iyaka : mai yiwuwa ga laushi lalacewa da mannewa ga mold rami surface
Polar roba : ayan kafa wurare masu taurare , mummunan tasiri demolding yi kuma bayyanar saman
Zubar da Ma'aikatan Haɗaɗɗiya da Ƙananan ƙwayoyin ƙwayoyin cuta
Tabbas hadaddun sinadaran ko ƙananan ƙwayoyin ƙwayoyin cuta a cikin roba mahadi samar da sabon dauki kayayyakin a lokacin vulcanization, wanda a hankali ajiya a kan mold rami surface.
Gases masu lalacewa da Halogen Effects
Wasu nau'ikan roba, kamar chloroprene roba (CR), chlorosulfonated polyethylene roba (CSM) , kuma fluororubber (FKM) , saki abubuwa masu lalata kamar HCl, H₂S , kuma karfe chlorides a lokacin vulcanization. Wadannan abubuwa suna haifar da mahimmanci lalata na mold cavities , tare da tasiri na musamman akan silicone roba mold aiki kuma daidai mold sabis rayuwa.
Wadannan gurbatawa da lalata al'amuran ba wai kawai kaskantar da su ba ne bayyanar da aiki na ciki na vulcanized roba kayayyakin , amma kuma rage samar da kwanciyar hankali , mai yuwuwar kai ga katse ci gaba da aiki , wanda kai tsaye rinjayar taro-samar yi bayan m roba mold bayarwa.
2. Mahimman Abubuwan Da Suka Shafi Gurɓatar Mold da Lalata (Bincike Nauyi)
Dangane da kwarewa mai amfani da kuma nazarin yanayin nauyi , gurɓataccen ƙura da lalata ana yin su ne da farko ta hanyar roba hadaddun tsarin , ciki har da:
Additives tsarin Vulcanization (sulfur, accelerators, zinc oxide)
Accelerators tare da ƙananan solubility da ƙaura mai girma
Migratory antioxidants
Masu kunnawa kamar stearic acid
Sakin Waje da Tsarukan Sakin Mold
Ma'aikata na tushen Polysiloxane
Wakilan tushen paraffin (mafi tsanani gurbatawa)
Ma'aikatan sakin fluorinated
Bugu da kari, abubuwan da ke biyo baya suna haɓaka gurɓataccen ƙura:
Zaɓin kayan shafa mold
Mold surface gama da sandblasting magani
Zazzabi Vulcanization, lokaci, da ci gaba da zagayowar samarwa
Yanayin zafi da yanayin zafi yayin ajiya mai yawa
A ciki aikace-aikace na siliki roba mold high-daidaici , haɗakar tasirin waɗannan abubuwan yana da mahimmanci musamman.
3. Tsarin Juyin Juyin Halitta-Uku na Gurɓatar Kogon Mold
Mataki na 1: Hijira na gurɓatawa
Karkashin yanayin zafi, vulcanization Additives kuma amsa ta hanyar samfurori ƙaura daga ciki harabar roba zuwa ga mold rami surface.
Mataki na 2: Adhesion da Deposition
Waɗannan abubuwan suna mannewa da ajiya akan karfe m surface , sannu a hankali kafa mai wuya-to-cire yadudduka oxidized ta hanyar thermal oxidation halayen.
Mataki na 3: Tsufa da Canja wuri
Tare da ci gaba da amfani na tsawon lokaci, ana samun gurɓatattun abubuwa tsufa da lalacewa:
Wani sashi ya zama da tabbaci manne ga mold rami
Wani sashi yana canjawa zuwa ga saman vulcanized roba kayayyakin , haddasawa kazanta, saman fashe , kuma bayyanar lahani
Wannan ba shi da kyau ga masana'antun da ke bi manyan kayan amfanin gona na roba.
4. Tasirin Tsarin Mold da Maganin Sama akan Gurbacewa
A ciki roba mold masana'antu kuma silicone roba mold aiki:
Maɗaukakin goge-goge, chrome-plated, ko kayan kwDukiyar gami → ƙarancin ƙazantaccen yanayi
Sandblasted, matte, ko gyare-gyaren rubutu → babban riƙewa
Ya kamata a biya kulawa ta musamman ga gaskiyar cewa yashi-induced m surface roughness iya ƙirƙirar wani “tasiri anchoring” a lokacin vulcanization, yana haifar da inji interlocking tsakanin roba da mold saman. Wannan yana haifar da mai tsanani danko, rushewar wahala , kuma na biyu gurbata.
Don magance wannan batu, kamar haka hanyoyin haɓaka haɓakar ƙasa ana ba da shawarar:
Chrome plating
Tungsten-chromium coatings
Vanadium-cobalt Dukoy coatings
Waɗannan fasahohin an inganta su sosai a cikin high-daidaici silicone rubber molds.
5. Cikakkun Dabaru don Rage Gurɓatar Mold
1️⃣ Inganta Haɗin Haɗin
Zaɓi hadawa sinadaran tare da kyau roba karfinsu, ƙananan ƙaura , kuma low blooming hali
Rage ƙananan kwayoyin halitta mai yiwuwa ga blooming da ajiya
2️⃣ Inganta Tsarin Tsarin Mold
Tabbatar m roba kwarara tashoshi
Rage girman matattun sasanninta da wuraren riƙewa , ba da damar cire gurɓatattun abubuwa yayin kwararar roba ko da gurɓataccen abu ya faru
3️⃣ Haɓaka Injiniya Mold Surface
Ba da fifiko filaye masu rufaffiyar lantarki ko Dukoy mai rufi
Ka guji abin da ba dole ba m sandblasting jiyya
4️⃣ Hanyoyin Tsaftace da Kulawa
Hannun tsaftace tsafta na yau da kullun sun haɗa da:
Injin tsaftacewa (rigar, bushe, goge baki)
Chemical tsaftacewa (acid tsaftacewa / alkaline tsaftacewa)
Ultrasonic tsaftacewa
A halin yanzu, sinadaran tsaftacewa ita ce hanyar da aka fi amfani da ita, ko da yake bukatun kare muhDuki kuma aminci na ma'aikaci dole ne a yi la'akari sosai. Kasuwanci ruwa mai tsaftacewa kuma mahadi na roba mai tsabtatawa Hakanan ana iya amfani da su azaman mafita na taimako.
Kammalawa
gurɓataccen ƙura a ciki samfuran roba na matsawa shine duniya, m , kuma na tsari cikin yanayi. Ta hanyar kawai ingantawa na tsari na:
Ƙirar ƙira
Fasahar jiyya na saman
iya masana'antun da gaske cimma:
Bargarin taro samar da high-madaidaici silicone roba molds
Dorewa da abin dogara samar yi bayan m roba mold bayarwa
A cikin samarwa da sarrafawa na samfuran roba na matsawa, roba molds kayan aiki ne masu mahimmanci don sarrafawa da tabbatarwa samfurin geometry, girman taro , da kuma yarda da juzu’i na girma.
