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Plastic moulding methods
Plastic moulding methodsDEBOLINAMUKHERJEE7This document discusses various plastic molding methods including compression molding, transfer molding, injection molding, extrusion molding, and blow molding. Compression and transfer molding are used for thermosetting materials, while injection molding and extrusion molding are generally used for thermoplastics. The document provides details on the processes and typical temperatures, pressures, and cycle times for each method. Calendering and laminating are also briefly described.
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2.de cuong thi cong coc ep
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Metal casting processes_1.pptx
Metal casting processes_1.pptxssusera85eeb1 * Given casting dimensions: Length = 6 inches, Width = 4 inches, Height = 3 inches
* Material of casting: Grey cast iron
* Shrinkage allowance for grey cast iron up to 2 feet is 0.125 inch/foot
* Length of casting = 6 inches = 0.5 feet
* Shrinkage allowance = 0.5 * 0.125 = 0.0625 inch = 0.0625 inch
* Width of casting = 4 inches = 0.333 feet
* Shrinkage allowance = 0.333 * 0.125 = 0.0416 inch = 0.04 inch
* Height of casting = 3 inches = 0.25 feet
* Shrinkage allowance = 0.
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Jant Kapağı Üretimi
- 1. ÜRETĠM YÖNTEMLERĠ DERSĠ SUNUMU KONU: JANT KAPAĞI ÜRETĠM AġAMALARI ÖDEVĠ HAZIRLAYANLAR: Kasım Ezel Ali Ersin Gül Mehmet Lök 1
- 2. JANT KAPAĞI ÜRETĠMĠ 3 FARKLI MALZEMEDEN YAPILIR. PASLANMAZ ÇELĠK DKP SAC PLASTĠK 2
- 4. Plastik malzemeden jant kapağı üretiminde plastik enjeksiyon makineleri kullanılır. 4
- 5. Kare levhalar hidrolik preslerden geçirilerek ilk şekillendirme işlemi tamamlanır. 5
- 6. Ġlk şekillendirme işlemi tamamlanan malzemenin hurdaları(fazlalıkları) makaslarla kesilir makasın ulaşamadığı kısımların temizlenmesi için etek daire kesme makineleri kullanılır. 6
- 7. Eksantrik preslerde; -kesme -bükme -derin cekme -yatırma -dikme işlemleri yapılarak istenilen şekil elde edilir. 7
- 9. 10- GİYOTİN MAKASTA Ö:640mm VE A:600mm 'YE KESİLMESİ 20- DAİRE MAKASTA Ö:640mm VE A:600mm ÇAPA KESİLMESİ 30- HİDROLİK PRESTE FORM BASKI BİR ÜRÜNÜN ÜRETİM AŞAMALARI 40-GİYOTİN MAKASTA ÇENTİK KESME 50- ÇEVRE KESME MAKINASINDA KABA KENAR KESME 60- KORDON MAKİNASINDA İNCE KENAR KESME 70- KORDON MAKİNASINDA KENAR KIVIRMA 80- İŞ EMRİ NO BASKI 9
- 10. 90- POLİSAJ 100-EKSANTRİK PRESTE ARMA BAĞLANTI DELİĞİ AÇMA 110- EKSANTRİK PRESTE KENAR HAVALANDIRMA DELİKLERİNİ KESME BİR ÜRÜNÜN ÜRETİM AŞAMALARI 120- EKSANTRİK PRESTE KENAR HAVALANDIRMA DELİKLERİNİ KIVIRMA 130- MARKALAMA 140- EKSANTRİK PRESTE BAĞLANTI PLASTİĞİ MONTAJ DELİKLERİ DELME 150- YÜZEY TEMİZLEME (SICAK SU İLE) 160- ARMA VE BAĞLANTI PLASTİKLERİ MONTAJI 10
- 11. GİYOTİN MAKASTA KESME Rulo halinde gelen paslanmaz sac, kare Ģeklinde kesilir. 11
- 12. DAİRE MAKASTA KESME Kare halinde olan sac, daire makasta çapı 600 mm olacak şekilde kesilir. 12
- 13. HİDROLİK PRESTE FORM BASKI Daire sacın form kalıbında basılması 13
- 14. GİYOTİN MAKASTA ÇENTİK KESME Form kalıbında pot çemberinin tuttuğu fazlalığı alabilmek için form almıĢ sacın dıĢına çentik atılır. 14
- 15. ÇEVRE KESME MAKINASINDA KABA KENAR KESME Bu çentikten baĢlanarak kaba çevresi kesilir. 15
- 16. KORDON MAKİNASINDA İNCE KENAR KESME Kıvrılacak kısım içeriye bırakılacak Ģekilde özenli olarak bir dıĢ kesim daha yapılır. 16
- 17. KORDON MAKİNASINDA KENAR KIVIRMA Kalan kenar, kıvırma topları ile içeriye doğru kıvırılır. 17
- 18. POLİSAJ Rulo halinde gelen sac form almadan önce ayna kadar parlaktı. Yapılan iĢlemlerden sonra form alarak uzayan sac matlaĢtı. Bu matlığı ortadan kaldırmak için parlatma-polishing-polisaj prosesi uygulanır. 18
- 19. EKSANTRİK PRESTE ARMA BAĞLANTI DELİĞİ AÇMA Sacın ortasına takılan plastik yuvarlak parçanın tırnaklarının geçeceği delikleri açma. 19
- 20. EKSANTRİK PRESTE KENAR HAVALANDIRMA DELİKLERİNİ KESME Jantın ısınmaması için kapakta havalandırma delikleri açılır. 20
- 21. EKSANTRİK PRESTE KENAR HAVALANDIRMA DELİKLERİNİ KIVIRMA Kesilen deliklerin keskin yüzeyleri içeriye kıvırılır. 21
- 22. EKSANTRİK PRESTE BAĞLANTI PLASTİĞİ MONTAJ DELİKLERİ DELME Kapağın janta oturtturulması çeĢitli Ģekillerde olabilir. Bu örnekte bağlantı plastiği kullanılmıĢtır. Kapağın kenarına monte edilmiĢ 5 adet plastikten her birinde allen vidaları bulunur. Bu vidalar sıkıldığında plastiğin alt bölümü(çenesi) jantın ağzına kadar dayanır. Bu Ģekilde kapağın janta montajı yapılmıĢ olur. 22
- 23. YÜZEY TEMİZLEME Polisaj fırçasının artıkları kullanılan don yağı ile birlikte polisaj sırasında yüzeye yapıĢır. Sıcak su ile bunların temizlenmesi 23
- 24. FİNAL KONTROL GÖRSEL ARMA VE BAĞLANTI PLASTİKLERİ MONTAJI FİNAL KONTROL ÖLÇÜSEL 24
- 25. 25
- 27. TEŞEKKÜRLER 27