Keadaan pengacuan untuk bahan pengacuan suntikan

Keadaan pengacuan nama bahan ABS
1. Pilih sprue dan gate yang sesuai mengikut kebolehliran.
2. Pilih keadaan gabungan yang sesuai untuk kedudukan get.
3. Oleh kerana pengacuan tekanan tinggi, kecondongan penarikan mestilah melebihi 2 darjah. 4.
4. Kadar pengecutan mestilah kira-kira 0.5 peratus . 5.
5. Biasanya digunakan untuk produk bersalut emas, langkah berjaga-jaga adalah seperti berikut: (1) Suhu tiub bahan hendaklah tinggi, kira-kira 220 darjah 250 darjah (2) Suhu suntikan hendaklah perlahan (menggunakan kaedah tekanan kedua) dan suntikan tekanan harus rendah; (3) Tiada agen pelepas acuan harus digunakan; (4) Seharusnya tiada sinki pengecutan dan tiada tanda aliran garis gabungan; (5) Seharusnya tiada trauma pada permukaan produk siap.
6. Heating temperature 180290 degree , mold temperature 5080 degree , material tube temperature 200230 degree , ejecting material temperature 200240 degree , injection pressure 7001500kg/cm², minimum operation temperature 260 degree .
7. Using hot air dryer, drying temperature 80100 degree , time required 24 hours (less than 0.3 percent ), material tube temperature 220240 degree for the first section; 210240 degree for the second section; 180230 degree for the third section; 150180 degree for the fourth section; mold surface temperature 5090 degree , injection pressure 5002100kg/cm².
8. Temperature setting: injection nozzle 203295 degree , front section 220295 degree , middle section 210290 degree , back section 180210 degree ; screw speed 70150rpm, mold temperature 1080 degree , holding pressure 3060 percent , back pressure 100250kg/cm².
9. ketumpatan 1.041.06g/cc, suhu ubah bentuk 82122 darjah , pengecutan acuan 0.40.8 peratus , graviti tentu 1.01.2, pekali pengembangan linear 0.000060.00013/ darjah, pengecutan pengacuan 0.30.8 peratus, suhu ubah bentuk haba 66107 darjah (88113 darjah).

AS(SAN)
 1. If there is a risk of cracking in the molded product, pay attention to the design of the molded product. In special cases, use a retraction tilt of more than 1 degree , and pay attention to the mold must not have a low sink part.
2. Membentuk kadar pengecutan adalah kira-kira 0.45 peratus , suhu pemanasan 170310 darjah , menggunakan pengering udara panas, masa pengeringan 23 jam (kurang daripada 0.1 peratus ), suhu pengeringan 80100 darjah , tiub bahan suhu 180290 darjah, 3.
3. temperature setting: injection nozzle 205240 degree , front section 190235 degree , middle section 180230 degree , back section 180210 degree ; screw speed 70150rpm, mold temperature 3580 degree , injection pressure 7002300kg/cm², holding pressure 3060 percent , back pressure 100200kg/cm².
4. linear expansion coefficient 0.0{{10}}0060.00008/ degree , molding shrinkage 0.20.7 percent , heat deflection temperature 9193 degree (8899 degree ), glass transfer temperature 125 degree , conduction coefficient 0.0003cal.cm.s.sm/ degree , density 1.061.08g/cm³, tensile strength 650800kgf/cm², Elongation 23 percent , Elasticity 3200037000 kgf/cm², 2.13.2kgf.cm/cm, Rockwell hardness M80, Transparent, Water absorption 0.20.3 percent .

CA
1. Bahan mestilah pra{1}}, suhu pengeringan 7580 darjah , masa pengeringan 26 jam, graviti tentu 1.29.
2. Kadar pengecutan membentuk kira-kira 0.5 peratus .
3. Suhu pemanasan 170265 darjah, suhu acuan 2080 darjah.

TEKSI
1. Suhu pemanasan 170265 darjah, suhu acuan 2080 darjah.
2. Suhu pengeringan 7580 darjah, masa pengeringan 26 jam.

 CP

1. Suhu pemanasan 170265 darjah, suhu acuan 2080 darjah.

 EVA

 1. temperature setting: injection nozzle 185 degree , front section 166 degree , middle section 160 degree , back section 150 degree ; screw speed max, mold temperature 3545 degree , back pressure 10kg.
2. Material tube temperature 150180 degree , injection nozzle 150 degree , first section 150 degree , second section 140 degree , third section 120 degree , mold temperature 3040 degree , injection pressure 600800kg/cm², molding shrinkage 0.72 percent , drying temperature 4050 degree , drying time 24 hours.

 FR-PET
1. Rintangan haba jangka panjang UL-140 darjah , suhu pesongan haba sehingga 225 darjah .
2. Kadar penghabluran perlahan, keadaan pengeringan dan pemprosesan yang ketat.
3. Pengeringan: 140 darjah selama 3 jam atau 120 darjah selama 58 jam. 4. Suhu suntikan: 235 darjah 250 darjah 5. Suhu acuan: 40 darjah 80 darjah.

HDPE
1. tetapan suhu: muncung suntikan 210 darjah, bahagian depan 200 darjah, bahagian tengah 200 darjah, bahagian belakang 195 darjah; kelajuan skru 140rpm, tekanan belakang 15kg.
2. pekali pengembangan linear 0.000100.00013/ darjah , pengecutan acuan 1.25.0 peratus , graviti tentu 0.930.97 suhu pesongan haba 4349 darjah (6082 darjah )
PIN&UL 1. tetapan suhu: muncung suntikan 220240 darjah, bahagian depan 210230 darjah, bahagian tengah 200230 darjah, bahagian belakang 190215 darjah; kelajuan skru 135215rpm, suhu acuan 25 darjah, tekanan belakang 5-10kg graviti tentu 1.05g/cc

PIN&UL

1. tetapan suhu: muncung suntikan 220240 darjah, bahagian depan 210230 darjah, bahagian tengah 200230 darjah, bahagian belakang 190215 darjah; kelajuan skru 135215rpm, suhu acuan 25 darjah, tekanan belakang 5-10kg graviti tentu 1.05g/cc

2. pekali pengembangan linear 0.0000340.00021/ darjah, pengecutan acuan 0.20.6 peratus, suhu pesongan haba 96 darjah.

LCP Ⅱ

1. ketumpatan 1.351.45g/cc, suhu ubah bentuk 198310 darjah , pengecutan acuan 0.11.0 peratus .
2. fast curing, resin temperature 300 degree , mold temperature 100 degree , injection pressure 300kg/cm², fast injection speed, short forming time, ready drying 150 degree , takes more than 4 hours, glass fiber reinforced 170, fluidity 210.

 LCP Ⅲ
1. ketumpatan 1.351.45g/cc, suhu ubah bentuk 198310 darjah , pengecutan acuan 0.11.0 peratus .
2. fast curing, resin temperature 260 degree , mold temperature 100 degree , injection pressure 300kg/cm², fast injection speed, short forming time, pre-drying 140 degree , 3 hours required, glass fiber reinforced 230.

LDPE

1. temperature setting: injection nozzle 140190 degree , front section 140200 degree , middle section 135195 degree , back section 130180 degree ; screw speed 210220rpm, mold temperature 1070 degree , material tube temperature 150310 degree , back pressure 5-10kg, mold temperature 3050 degree , injection pressure 360500kg/cm².
2. Pekali pengembangan linear 0.000100.00020/ darjah , pengecutan acuan 1.55.0 peratus , graviti tentu 0.910.93, suhu pesongan haba (3849 darjah ).

PA
1. injection temperature and drying temperature must be high; injection pressure and holding pressure should not be too high and too long, to inject the male mold at high speed, there should be exhaust channels to avoid scorching of the rubber; back pressure 50150kg/cm².
 2. The plastic should not be put into the melt cylinder before it reaches the dry level, because it is easy to be stuck in the rod groove of the feeding section with strong water, forming a difficult phenomenon of feeding.
3. Apabila membentuk, ia mudah disejukkan pada muncung suntikan. Jika tekanan suntikan meningkat semasa penyejukan, injap sehala mudah pecah, jadi kawalan suhu pada muncung suntikan mestilah sesuai. Untuk mengelakkan plastik daripada melimpah ke dalam acuan, adalah dinasihatkan untuk menggunakan muncung terkawal.
4. When changing to other plastics for injection, it should be noted that the original nylon heating temperature is 270 degree or more, while the general material heating temperature is only about 200 degree for operation, so the melting barrel must be heated to the nylon heating temperature before operation, otherwise it is easy to break the screw's check valve and dispensing head.
5. Kaedah pengacuan mesti dipatuhi untuk menghasilkan hasil yang baik. 6.
6. Untuk mengelakkan pembentukan kelebihan sisa, acuan ketepatan mesti digunakan.
7. Apabila menggunakan acuan industri, suhu bahan acuan hendaklah dikristalkan.
8. Reka bentuk produk acuan mesti mengelakkan kemurungan dan mempertimbangkan kestabilan dimensi.
9. Kadar pengecutan acuan adalah kira-kira 1.52.5 peratus.
10. The heating temperature of nylon 6 (PA6) is 220300 degree , the mold temperature is 100160 degree , the material tube temperature is 200260 degree , the injection material temperature is 220300 degree , the injection pressure is 7002000kg/cm², the minimum operation temperature is 225 degree , the melting point temperature is 215 degree , the molding temperature is 10300 degree , the drying temperature is 75100 degree , the time required is 26 hours, and the use time is 26 hours. It takes 26 hours, using dehumidifying dryer, injection pressure 7502000kg/cm2, material tube temperature 230 degree for the first section; 230 degree for the second section; 220 degree for the third section; 210 degree for the fourth section; mold surface temperature 2570 degree . Coefficient of linear expansion 0.000083/ degree , molding shrinkage 0.62.1 percent , specific gravity 1.11.4 heat deflection temperature 6770 degree (149185 degree ). 11. Nylon 66(PA66) heating temperature 250380 degree , mold temperature 30100 degree , material tube temperature 240300 degree , injection material temperature 250310 degree , injection pressure 6002100kg/cm², minimum operation temperature 260 degree , melting point temperature 215 degree , molding temperature 260320 degree , drying temperature 8090 degree . It takes 36 hours, using dehumidifying dryer, linear expansion coefficient 0.000080.00013/ degree , molding shrinkage 1.32.4 percent , specific gravity 1.11.4, heat deflection temperature 6686 degree . 12. temperature setting: injection nozzle 235265 degree , front section 235245 degree , middle section 210240 degree , rear section 195230 degree ; screw speed 100105rpm, mold temperature 3540 degree , back pressure 5-10kg. 13. density 0.941.14g/cc, deformation temperature 35121 degree , molding shrinkage 0.7 2.5 percent . PAR 1. density 1.171.31g/cc, deformation temperature 95175 degree , molding shrinkage 0.81.0 percent . 2. glass transfer point 190 degree , fast curing, resin temperature 370 degree , mold temperature 130 degree , injection pressure 1000kg/cm², fast injection speed, ordinary forming time, ready drying 140 degree , takes 6 hours, glass fiber reinforced 35, fluidity 50.

 PBT

1. Suhu silinder cair hendaklah dikawal pada 230270 darjah, dan suhu acuan hendaklah ditetapkan pada 40 darjah 90 darjah.

2. When you want to get a good glossy surface, it is advisable to increase the temperature, and if necessary, to carry out sufficient preparatory drying. The required injection pressure is about 5001300kg/m². 3.
3. Temperature setting: nozzle 250 degree , front section 245 degree , middle section 235 degree , back section 230 degree ; screw speed 80rpm, mold temperature 40120 degree , back pressure 10kg, material tube temperature 230270 degree , injection pressure 3001000kg/cm², drying temperature 100140 degree , time required 28 hours.
4. ketumpatan 1.291.50g/cc, suhu ubah bentuk 50110 darjah, pengecutan acuan 1.32.4 peratus, graviti tentu 1.31.6.
 PC
 1. The injection pressure is high, and the temperature inside the tube is too high or stagnant for a long time, it is easy to start thermal decomposition, discoloration and reduce the physical properties, so the mold temperature should be 85 degree 120 degree .
 2. It is especially difficult to form thick products because the finished products are prone to residual stress, which will cause future rupture.
 3. High temperature and high pressure are required for forming, so screw type forming shuttle should be used.
4. Bahan hendaklah dikeringkan secukupnya sebelum digunakan.
5. Pintu dan pelari hendaklah direka bentuk dengan rintangan aliran rendah. 6.
6. Reka bentuk produk acuan hendaklah hampir dengan ketebalan daging untuk mengelakkan tatahan bahagian logam. Tambahan pula, kecondongan penarikan balik hendaklah melebihi 2 darjah .
 7. shrinkage rate 0.40.7 percent , specific gravity 1.21.5. 8. heating temperature 260320 degree , mold temperature 80120 degree , material tube temperature 260310 degree , ejecting material temperature 280320 degree , injection pressure 8001500kg/cm², minimum operating temperature 260 degree . 9. Using dehumidifying dryer, drying temperature is 105120 degree (below 0.020.03 percent ), taking 24 hours, material tube temperature is 260270 degree for the first section; 260270 degree for the second section; 240250 degree for the third section; 220230 degree for the fourth section; mold surface temperature is 4060 degree . 10. temperature setting: injection nozzle 275305 degree , front section 270275 degree , middle section 265275 degree , rear section 250270 degree ; screw speed 50115rpm, mold temperature 60120 degree , injection pressure 7002100kg/cm², back pressure 5-15kg. 11. density 1.20g/cc, deformation temperature 120 146 degree , coefficient of linear expansion 0.000066/ degree , heat deflection temperature 129135 degree (141 degree ),.

PCTFE
1. Reka bentuk gerbang dan pelari untuk aliran yang betul. 2. 2. Mesin pengacuan suntikan tekanan tinggi mesti digunakan. 3. 3. Pilih keadaan pengacuan yang boleh mengelakkan perubahan warna. 4. Gunakan acuan dan bahan anti-karat serta rawatan permukaan. 5. 5. Kadar pengecutan pengacuan adalah kira-kira 0.5 peratus .

PE
1. Bahan PE berketumpatan tinggi mempunyai suhu penghabluran yang jelas, jadi lebih baik untuk meningkatkan kelajuan suntikan. 2. 2. Untuk produk daging tebal, ia adalah amat penting untuk meningkatkan kelajuan suntikan: ia boleh meningkatkan gloss permukaan produk, mengelakkan warpage, mengurangkan pengecutan acuan, dll. 3. 3. Reka bentuk skru dan bukan {{ 5}}peralatan terbalik hendaklah tepat, jika terdapat sebarang kehilangan atau kecederaan, bahan akan ditambah perlahan-lahan. (Oleh kerana aliran balik plastik, jumlah suntikan ke dalam acuan dikurangkan, dan bahan lebur disandarkan di bahagian pemeteran, supaya bahan baru di bahagian penyusuan dikekalkan, menyebabkan metabolisme gagal, dengan itu membentuk produk acuan dengan kualiti tidak pepejal, pengecutan kuat dan kadar kecacatan yang tinggi.) 4. Reka bentuk acuan (pintu gerbang, pelari) mempunyai kelajuan penyiapan bahan yang cepat. 5. Amalkan kaedah penyejukan dengan kelajuan penyejukan seragam. 6. 6. Penggunaan mesin pengacuan skru adalah lebih baik, kebolehliliran yang baik; tidak memerlukan tekanan suntikan tekanan tinggi, tekanan penahanan hendaklah lebih lama 3060 peratus . 7. Kadar pengecutan ialah 2.5 peratus dan 2.0 peratus dalam arah sudut yang betul. 8. Produk yang dibentuk hendaklah direka bentuk untuk mengelakkan ledingan dan ubah bentuk. 9. Rendah