Tsika grey simbi inotakura dzimba neinvestment casting uyeCNC machining.
Grey iron, kanagrey cast iron, imhando yesimbi yakakandwa ine graphite microstructure. Nekuda kwekureruka kwayo kwekugadzira, yakakwirira yekumanikidza simba, zvirinani kupisa kwemafuta uye yakanakisa vibration kunyudza, iyo grey cast iron ndiyo inonyanya kushandiswa kukanda simbi kwenguva yakareba kwazvo, kunyangwe mukugadzirwa kweindasitiri kwazvino. Kabhoni yemukati ndiyo inonyanya kukosha chinhu chegrey iron (kazhinji 2% kusvika 4%) kugadzira simba rekusimba uye machinability. Kana simbi yakanyungudutswa ikaomesa mamwe ecarbon precipitates se graphite, ichiita tudiki, asina kujairika flakes mukati mekristaro chimiro chesimbi inosimudzira inodiwa zvimiro zvesimbi yakakandwa, maflakes anokanganisa chimiro chekristaro chinotungamira mukukanda hunhu hwesimbi.
Mechanical Properties yeCast Grey Iron | ||||||
Kusimba Kwekusimba Kwekuparadzanisa Samples dzeGrey Cast Irons | ||||||
| Material Designation | GG-10, EN-GJL-100 | GG-15, SH-GJL-150 | GG-20, EN-GJL-200 | GG-25, SH-GJL-250 | GG-30, EN-GJL-300 | GG-35, EN-GJL-350 |
| Tensile Simba (MPa) | ≥100 | ≥150 | ≥200 | ≥250 | ≥300 | ≥350 |
Kusimba Kusimba kweKukanda-paSamples yeGrey Cast Irons | ||||||
| Material Designation | Kukora Kwemadziro eKukanda (mm) | Kusimba Kwesimba (MPa) ≥ | ||||
| Muenzaniso Bar Dia. (mm) | Sample Block (mm) | Castings (Reference) | ||||
| φ30 | φ50 | R15 | R25 | |||
| HT150, GG-15, EN-GJL-150 | 20-40 | 130 | / | 120 | / | 120 |
| 40-80 | 115 | 115 | 110 | / | 105 | |
| 80-150 | / | 105 | / | 100 | 90 | |
| 150-300 | / | 100 | / | 90 | 80 | |
| HT200, GG-20, EN-GJL-200 | 20-40 | 180 | / | 170 | / | 165 |
| 40-80 | 160 | 155 | 150 | / | 145 | |
| 80-150 | / | 145 | / | 140 | 130 | |
| 150-300 | / | 135 | / | 130 | 120 | |
| HT250, GG-25, EN-GJL-250 | 20-40 | 220 | / | 210 | / | 205 |
| 40-80 | 200 | 190 | 190 | / | 180 | |
| 80-150 | / | 180 | / | 170 | 165 | |
| 150-300 | / | 165 | / | 160 | 150 | |
| HT300, GG-30, EN-GJL-300 | 20-40 | 260 | / | 250 | / | 245 |
| 40-80 | 235 | 230 | 225 | / | 215 | |
| 80-150 | / | 210 | / | 200 | 195 | |
| 150-300 | / | 195 | / | 185 | 180 | |
| HT350, GG-35, EN-GJL-350 | 20-40 | 300 | / | 290 | / | 285 |
| 40-80 | 270 | 265 | 260 | / | 255 | |
| 80-150 | / | 240 | / | 230 | 225 | |
| 150-300 | / | 215 | / | 210 | 205 | |
Kusimba Kwesimba kweGrey Iron Kukandira mune Yakasiyana Rusvingo Hukobvu | ||||||
| Kukora Kwemadziro (mm) | Material Designation | |||||
| GG-10, EN-GJL-100 | GG-15, SH-GJL-150 | GG-20, EN-GJL-200 | GG-25, SH-GJL-250 | GG-30, EN-GJL-300 | GG-35, EN-GJL-350 | |
| Kusimba Kwesimba (MPa) ≥ | ||||||
| 2.5-4.0 | 130 | 175 | 220 | / | / | / |
| 4.0-10 | 270 | |||||
| 10-20 | 100 | 145 | 195 | 240 | 290 | 340 |
| 20-30 | 90 | 130 | 170 | 220 | 250 | 290 |
| 30-50 | 80 | 120 | 160 | 200 | 230 | 260 |
Cast iron, kunyanya kusanganisira grey cast iron uye ductile (nodular) cast iron inonyanya kushandiswa kukanda nemaitiro ekukanda jecha, shell molding casting, coated jecha kukanda kana kurasika furo. Nekudaro, kune mamwe mamiriro akakosha, iyo yakarasika wakisi yekukandira nzira inoshandiswa zvakare nekuda kwekunaka kwavo kwepamusoro uye kwepamusoro kurongeka. PaRMC, isu zvakare tine kugona kwekukanda grey iron uye ductile nayoInvestment castingkushandisa silica sol uye girazi remvura pakuvaka shell.
Kana simbi yakakandwa ikatonhodzwa zvishoma nezvishoma, simende inoora kuita iron uye kabhoni muchimiro chegraphite inodaidzwa kuti graphitization. Masimbi ekukanda uko chikamu chikuru checementite chakaora ne graphitization chinonzi grey cast irons. Kukanda simbi umo graphitization isati yaitika, i. e, iyo kabhoni yese iri mufomu yakasanganiswa, inonzi simbi chena yakakandwa. Iyo graphitization process inoda nguva uye saka, kana yemvura yakakandwa simbi inotonhodzwa nekukurumidza, chena yakakandwa simbi inoguma. White cast iron inofananidzwa muzvinhu neiyo yepamusoro kabhoni simbi. Nekudaro, yakanyanya brittle uye nekudaro haishandiswe kune zvimiro zvikamu. Inobatsira kune zvikamu izvo zvipfeko zvinoputika zviripo. Kusimba kwesimba kunosiyana pakati pe170 kusvika 345 MPa uye kazhinji inenge 240 MPa. Kuomarara kunobva pa350 kusvika ku500 BHN. Tichitarisa kuoma kwakanyanya, machinability yacho haina kunaka uye inowanzopedzwa nekugaya.
| Grey Iron Kuenzanisa | Kukanda Ukobvu/mm | Kuumbwa Kwemakemikari ((()) | |||||||
| China (GB/T 9439-1988) | ISO 185:1988 | USA ASTM A48/A48M-03(2008) | Europe(EN 1561:1997) | C | Si | Mn | P ≦ | S ≦ | |
| HT100 (HT10-26) | 100 | No.20 F11401 | GJL-100 JL-1010 | - | 3.4-3.9 | 2.1-2.6 | 0.5-0.8 | 0.3 | 0.15 |
| HT150 (HT15-33) | 150 | No.25A F11701 | GJL-150 JL-1020 | ＜30 30-50＞50 | 3.3-3.5 3.2-3.5 3.2-3.5 | 2.0-2.4 1.9-2.3 1.8-2.2 | 0.5-0.8 0.5-0.8 0.6-0.9 | 0.2 | 0.12 |
| HT200 (HT20-40) | 200 | No.30A F12101 | GJL-200 JL-1030 | ＜30 30-50＞51 | 3.2-3.5 3.1-3.4 3.0-3.3 | 1.6-2.0 1.5-1.8 1.4-1.6 | 0.7-0.9 0.8-1.0 0.8-1.0 | 0.15 | 0.12 |
| HT250 (HT25-47) | 250 | No.35A F12401 No.40A F12801 | GJL-250 JL-1040 | ＜30 30-50＞52 | 3.0-3.3 2.9-3.2 2.8-3.1 | 1.4-1.7 1.3-1.6 1.2-1.5 | 0.8-1.0 0.9-1.1 1.0-1.2 | 0.15 | 0.12 |
| HT300 (HT30-54) | 300 | No.45A F13301 | GJL-300 JL-1050 | ＜30 30-50＞53 | 2.9-3.2 2.9-3.2 2.8-3.1 | 1.4-1.7 1.2-1.5 1.1-1.4 | 0.8-1.0 0.9-1.1 1.0-1.2 | 0.15 | 0.12 |
| HT350 (HT35-61) | 350 | No.50A F13501 | GJL-350 JL-1060 | ＜30 30-50＞54 | 2.8-3.1 2.8-3.1 2.7-3.0 | 1.3-1.6 1.2-1.5 1.1-1.4 | 1.0-1.3 1.0-1.3 1.1-1.4 | 0.1 | 0.1 |
Investment casting (kana kurasika wax casting) zvinoreva kugadzirwa kweceramic kutenderedza mapatani ewakisi kugadzira mold yakawanda kana imwe chikamu kuti igamuchire simbi yakanyungudutswa. Iyi nzira inoshandisa jekiseni rinoshandiswa rakaumbwa newakisi pateni kuita kuti riwane mafomu akaomarara ane hunhu hwakasarudzika.s. Precision castingsinogona kuwana kurongeka kwakasiyana kune ese madiki uye makuru ekukanda zvikamu muhuwandu hwakawanda hwezvinhu.
Kugadzira mold, wakisi pateni, kana sumbu remapateni, inonyikwa mumidziyo yeceramic kakawanda kugadzira goko gobvu. De-wax process inoteverwa negoko rakaomarara. Iyo yakisi-isina Ceramic shell inobva yagadzirwa. Simbi yakanyungudutswa inobva yadirwa muceramic shell cavities kana cluster, uye kana yakasimba uye yatonhodzwa, ganda receramic rinodamburwa kuti riratidze chinhu chekupedzisira chakakandwa simbi.
| Investment Casting Technical Data paRMC | |
| R&D | Software: Solidworks, CAD, Procast, Pro-e |
| Nguva Yekutungamira Yekuvandudza uye Samples: 25 kusvika 35 mazuva | |
| Metal Metal | Ferritic Stainless Simbi, Martensitic Stainless Simbi,Austenitic simbi isina tsvina, Kunaya Kuomesa Stainless Simbi, Duplex Stainless Simbi |
| Carbon Simbi, Alloy Simbi, Tool Simbi, Heat Resistant Simbi, | |
| Nickle-base Alloy, Aluminium Alloy, Copper-base Alloy, Cobalt-base Alloy | |
| Metal Standard | ISO, GB, ASTM, SAE, GOST EN, DIN, JIS, BS |
| Material for Shell Building | Silica Sol (yakanaya silika) |
| Girazi remvura (Sodium Silicate) | |
| Misanganiswa yeSilica Sol uye Mvura Girazi | |
| Technical Parameter | Piece Weight: 2 gramu kusvika 200 makirogiramu |
| Max Dimension: 1,000 mm yeDyamita kana Kureba | |
| Min Wall Ukobvu: 1.5mm | |
| Kukandira Kukasharara: Ra 3.2-6.4, Machining Roughness: Ra 1.6 | |
| Kushivirira kweKukanda: VDG P690, D1/CT5-7 | |
| Kushivirira kweMachining: ISO 2768-mk/IT6 | |
| Inner Core: Ceramic Core, Urea Core, Mvura Soluble Wax Core | |
| Kupisa Kurapa | Normalizing, Tempering, Kudzima, Annealing, Solution, Carburization. |
| Surface Treatment | Kupukuta, jecha / Kuputika kwepfuti, Zinc Plating, Nickel Plating, Oxidation Treatment, Phosphating, Poda Painting, Geormet, Anodizing |
| Dimension Testing | CMM, Vernier Caliper, Mukati meCaliper. Depth Gage, Height Gage, Go/No go Gage, Special Fixtures |
| Chemical Inspection | Chemical Compostion Analysis (20 makemikari zvinhu), Utsanana Kuongorora, X-ray Radiographic Inspection, Carbon-Sulfur Analyzer |
| Kuongorora Kwenyama | Dynamic Balancing, Static Blancing, Mechanical Properties (Kuoma, Kusimba Kwegoho, Kusimba Kwesimba), Kurebesa |
| Kukwanisa Kugadzira | Kupfuura 250 matani pamwedzi, anopfuura 3,000 matani pagore. |
