Kev cai grey hlau bearing vaj tse los ntawm peev casting thiabCNC machining.
Grey hlau, los yoggrey cam khwb cia hlau, yog ib hom cam khwb cia hlau uas muaj graphite microstructure. Ua tsaug rau nws yooj yim ntawm machining, siab compressive zog, zoo thermal conductivity thiab zoo heev vibration absorption, lub grey cam khwb cia hlau yog ib tug ntawm cov feem ntau lug siv casting hlau rau lub sij hawm ntev heev, txawm nyob rau hauv tam sim no kev lag luam ntau lawm. Cov ntsiab lus carbon yog nyob deb ntawm cov ntsiab lus tseem ceeb tshaj plaws rau grey hlau (feem ntau 2% mus rau 4%) los tsim tensile zog thiab machinability. Thaum molten cam khwb cia hlau solidifies ib co ntawm cov pa roj carbon precipitates li graphite, tsim me me, irregular flakes nyob rau hauv lub siv lead ua qauv ntawm cov hlau uas txhim khu cov khoom tsim nyog ntawm cam khwb cia hlau, cov flakes cuam tshuam cov qauv siv lead ua ua rau cam khwb cia hlau tus yam ntxwv brittleness.
Mechanical Properties ntawm Cam khwb cia Grey Hlau | ||||||
Tensile Lub zog ntawm cais cov qauv nrum ntawm Grey Cast Irons | ||||||
| Khoom Siv Lub Npe | GG-10, EN-GJL-100 | GG-15, EN-GJL-150 | GG-20, EN-GJL-200 | GG-25, EN-GJL-250 | GG-30, EN-GJL-300 | GG-35, EN-GJL-350 |
| Tensile zog (MPa) | ≥100 | ≥150 | ≥200 | ≥250 | ≥300 | ≥350 |
Tensile Strength ntawm Cast-on Samples Grey Cast Irons | ||||||
| Khoom Siv Lub Npe | Phab ntsa Thickness ntawm Casting (mm) | Tensile zog (MPa) ≥ | ||||
| Sample Bar Dia. (mm) | Qauv Block (mm) | Castings (Reference) | ||||
| φ30 | φ50 | R15 | R25 | |||
| HT150, GG-15, EN-GJL-150 | 20-40 | 130 | / | 120 | / | 120 |
| 40-80 : kuv | 115 | 115 | 110 | / | 105 | |
| 80-150 | / | 105 | / | 100 | 90 | |
| 150-300 Nws | / | 100 | / | 90 | 80 | |
| HT200, GG-20, EN-GJL-200 | 20-40 | 180 | / | 170 | / | 165 |
| 40-80 : kuv | 160 | 155 | 150 | / | 145 | |
| 80-150 | / | 145 | / | 140 | 130 | |
| 150-300 Nws | / | 135 | / | 130 | 120 | |
| HT250, GG-25, EN-GJL-250 | 20-40 | 220 | / | 210 | / | 205 |
| 40-80 : kuv | 200 | 190 | 190 | / | 180 | |
| 80-150 | / | 180 | / | 170 | 165 | |
| 150-300 Nws | / | 165 | / | 160 | 150 | |
| HT300, GG-30, EN-GJL-300 | 20-40 | 260 | / | 250 | / | 245 |
| 40-80 : kuv | 235 | 230 | 225 | / | 215 | |
| 80-150 | / | 210 | / | 200 | 195 | |
| 150-300 Nws | / | 195 | / | 185 | 180 | |
| HT350, GG-35, EN-GJL-350 | 20-40 | 300 | / | 290 | / | 285 |
| 40-80 : kuv | 270 | 265 | 260 | / | 255 | |
| 80-150 | / | 240 | / | 230 | 225 | |
| 150-300 Nws | / | 215 | / | 210 | 205 | |
Tensile Strength ntawm Grey Hlau Casting nyob rau hauv txawv phab ntsa Thickness | ||||||
| Cam khwb cia Thickness (mm) | Khoom Siv Lub Npe | |||||
| GG-10, EN-GJL-100 | GG-15, EN-GJL-150 | GG-20, EN-GJL-200 | GG-25, EN-GJL-250 | GG-30, EN-GJL-300 | GG-35, EN-GJL-350 | |
| Tensile zog (MPa) ≥ | ||||||
| 2.5-4.0 Nws | 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 |
Cam khwb cia hlau, feem ntau suav nrog grey cam khwb cia hlau thiab ductile (nodular) cam khwb cia hlau yog tsuas yog siv rau casting los ntawm cov txheej txheem ntawmxuab zeb casting, plhaub molding casting, coated xuab zeb casting los yog poob ua npuas ncauj casting. Txawm li cas los xij, rau qee qhov xwm txheej tshwj xeeb, qhov poob ciab peev casting txheej txheem kuj tseem siv vim lawv qhov zoo thiab qhov tseeb dua. Ntawm RMC, peb kuj muaj peev xwm ntawm casting grey hlau thiab ductile nrogpeev castingsiv silica sol thiab iav dej rau lub plhaub tsev.
Thaum cam khwb cia hlau maj mam txias, cov cementite decomposes rau hauv hlau thiab carbon nyob rau hauv daim ntawv ntawm graphite uas yog hu ua graphitization. Cam khwb cia hlau qhov twg feem pua ntawm cov cementite decomposed los ntawm graphitization hu ua grey cam khwb cia hlau. Cam khwb cia hlau nyob rau hauv uas graphitization tsis tshwm sim, i. e, tag nrho cov carbon yog nyob rau hauv daim ntawv ua ke, hu ua dawb cam khwb cia hlau. Cov txheej txheem graphitization yuav tsum tau siv sij hawm thiab yog li ntawd, thaum cov kua cam khwb cia hlau yog txias sai, dawb cam khwb cia hlau yuav tshwm sim. Dawb cam khwb cia hlau yog muab piv rau hauv cov khoom rau cov high carbon steels. Txawm li cas los xij, nws yog nkig heev thiab yog li ntawd tsis yog siv rau cov khoom siv. Nws muaj txiaj ntsig zoo rau qhov chaw uas muaj abrasive hnav. Tensile lub zog sib txawv ntawm 170 txog 345 MPa thiab feem ntau yog li 240 MPa. Lub hardness ntawm 350 mus rau 500 BHN. Nyob rau hauv saib ntawm lub siab heev hardness, lub machinability yog tsis zoo thiab yog feem ntau tiav los ntawm kev sib tsoo.
| Grey Hlau Sib Piv | Casting Thickness / hli | Tshuaj muaj pes tsawg leeg (%) | |||||||
| Tuam Tshoj (GB/T 9439-1988) | TS EN ISO 185: 1988 | USA ASTM A48/A48M-03 (2008) | Teb chaws Europe (EN 1561: 1997) | C | Si | Mn | P ≦ | S ≦ | |
| HT100 (HT10-26) | 100 | Nr 20 F11401 | GJL-100 JL-1010 | - | 3.4-3.9 | 2.1-2.6 | 0.5-0.8 hli | 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 ib | 0.5-0.8 0.5-0.8 0.6-0.9 hli | 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 ib | 1.4-1.7 1.3-1.6 1.2-1.5 Ib | 0.8-1.0 0.9-1.1 1.0-1.2 ib | 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 ib | 1.4-1.7 1.2-1.5 1.1-1.4 ib | 0.8-1.0 0.9-1.1 1.0-1.2 ib | 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 ib | 1.0-1.3 1.0-1.3 1.1-1.4 ib | 0.1 | 0.1 |
Kev nqis peev casting (los yog poob ciab casting) yog hais txog kev tsim cov ceramic nyob ib ncig ntawm cov qauv siv quav ciab los tsim cov pwm ntau lossis ib feem kom tau txais cov hlau molten. Cov txheej txheem no siv cov txheej txheem txhaj tshuaj molded siv quav ciab qauv kom ua tiav cov ntaub ntawv nyuaj nrog qhov tshwj xeeb ntawm qhov zoo.s. Precision castingstuaj yeem ua tiav qhov tseeb tshwj xeeb rau ob qho tib si me thiab loj casting qhov chaw hauv ntau yam khoom siv.
Txhawm rau tsim cov pwm, cov qauv siv quav ciab, lossis pawg ntawm cov qauv, yog dipped rau hauv cov khoom siv ceramic ob peb zaug los tsim lub plhaub tuab. Cov txheej txheem de-wax yog tom qab ntawd ua raws li lub plhaub qhuav txheej txheem. Cov wax-tsawg ceramic plhaub yog ces tsim. Molten hlau yog tom qab ntawd nchuav rau hauv cov kab noj hniav hauv cov kab noj hniav los yog pawg, thiab ib zaug khoom thiab txias, lub plhaub ceramic tau tawg tawm kom pom cov khoom siv hlau zaum kawg.
| Kev nqis peev Casting Technical Data ntawm RMC | |
| R&D | Software: Solidworks, CAD, Procast, Pro-e |
| Lub Sij Hawm Rau Kev Txhim Kho thiab Cov Qauv: 25 txog 35 hnub | |
| Molten Hlau | Ferritic Stainless hlau, Martensitic Stainless hlau,Austenitic stainless hlau, Precipitation Hardening Stainless Hlau, Duplex Stainless Hlau |
| Carbon Steel, Alloy Steel, Tool Steel, Thaum tshav kub kub Resistant Steel, | |
| Nickle-base Alloy, Aluminium Alloy, Copper-base Alloy, Cobalt-puag Alloy | |
| Hlau Standard | ISO, GB, ASTM, SAE, GOST EN, DIN, JIS, BS |
| Khoom siv rau lub tsev Shell | Silica sol (Precipitated Silica) |
| Dej iav (Sodium Silicate) | |
| Kev sib xyaw ntawm Silica Sol thiab Dej iav | |
| Technical Parameter | Qhov hnyav: 2 grams txog 200 kg |
| Max Dimension: 1,000 mm rau txoj kab uas hla lossis Length | |
| Min phab ntsa Thickness: 1.5mm | |
| Casting Roughness: Ra 3.2-6.4, Machining Roughness: Ra 1.6 | |
| Kev kam rau ntawm Casting: VDG P690, D1 / CT5-7 | |
| Kev kam rau siab ntawm Machining: ISO 2768-mk / IT6 | |
| Inner Core: Ceramic Core, Urea Core, Dej Soluble Wax Core | |
| Kev kho cua sov | Normalizing, Tempering, Quenching, Annealing, Tshuaj, Carburization. |
| Kev kho saum npoo | Polishing, xuab zeb / txhaj tshuaj blasting, zinc plating, npib tsib xee plating, Oxidation kho, Phosphating, hmoov pleev xim, Geormet, Anodizing |
| Kev ntsuas qhov ntev | CMM, Vernier Caliper, Sab hauv Caliper. Depth Gage, Qhov siab Gage, Go / Tsis mus Gage, Tshwj xeeb Fixtures |
| Tshuaj ntsuam xyuas | Chemical Compostion Analysis (20 chemical Chemical Elements), Kev Tshuaj Xyuas Kom Huv Huv, X-ray Radiographic Tshuaj Xyuas, Carbon-Sulfur Analyzer |
| Kev tshuaj xyuas lub cev | Dynamic Balancing, Static Blancing, Mechanical Properties (Hardness, Yield Strength, Tensile Strength), Elongation |
| Muaj Peev Xwm Ntau Lawm | Ntau tshaj 250 tons hauv ib hlis, ntau tshaj 3,000 tons ib xyoos twg. |
