Diffuser is one key component of the gasturbine combustor following the compressor. Its primary function is to slowdown the air flow delivered by the compressor in order to promote efficientcombustion and avoid large total pressure losses. The impacts of pre-diffuserwall angle and dump gap ratio on the performance of dump diffusers have beendiscussed in the previous work, but few work has been undertaken on designingdiffusers with greater pre-diffuser wall angle. It was observed that apparentflow separation occurred on pre-diffuser wall when pre-diffuser wall angleamplified to certain degree. The pre-diffuser exit flow was distorted,indicating that the uniform exit conditions typically assumed in the diffuserdesign were violated. Skew distribution of the pre-diffuser outlet flow canresult in strong transverse mixing for liquid, the total pressure loss ofpre-diffuser increases significantly.

Material of turbine is Supperalloy andwidely used in Marine Engine, Gas Turbine, Industrial Engine, Turbojet, Steamturbine, Aero turbine etc.
Process of turbine are investment casting, different countryhave different translate, Lost Wax Casting, Vacuum Casting, Precision Casting,Silica Sol Casting etc.

China Material Grade

K211 K213 K214 K401 K402 K403 K405 K406 K406C K407 K408 K409 K412 K417K417G K417L K418 K418B K419 K419H K11 K13 K14 K1 K2 K3 K5 K6 K6C K7 K8 K9 K12K17 K17G K17L K18 K18B K19 K19H K423 K423A K424 K430 K438 K438G K441 K461 K477K480 K491 K4002 K4130 K4163 K4169 K4202 K4242 K4536 K4537 K4648 K4708 K23 K23AK26 K430 K38 K38G K41 K461 K77 K80 K91 K002 K130 K163 K4169 K202 K242 K536 K537K648 K708 K605 K610 K612 K640 K640M K6188 K825 K605 K10 K612 K40 K40M K188 K25

America Material Grade

Incone1600 Incone1601 Incone1604 Incone1617 Incone1625 NA-224 Nimonie75RA-333 A-286 Discaloy Haynes556 Inco loy903 PyrometCTX-1 K63198 N08020 N0800N08801 R30155 N08330 R30605 R30188 R30816 N10001 N10065 N10002 N06455 N10276N10003 N10004 N06002 N06600 N06601 N06625 N06333 K66286 K66220 V-57 W-545AR-213 MP-35N MP-159 Astroloy D-979 IN100 IN102 Incoloy901 Inco loy1706 Incoloy1718 Inco loy1751 Inco loyIX750 M252 Nimonic80A Nimonic90 Nimonic95Nimonic100 Nimonic105 Nimonic115 Nimonic263 Pyromet860 Refractory26 Rene4LRene95 Rene100 Udimet500 Udimet520 Udimet630 Udimet700 Udimet710 UnitempAF2-1DAWaspaloy K66545 R30035 N09979 K66979 N13100 N06102 N09901 N09706 N07718 N07750N07252 N07080 N07090 N07041 N07500 N07001 HA HC HD HE HF HH HI HK HLHN HPHP-50WZ HT HU HW HX J92605 J93005 J93403 J92603 J93503 J94003 J94224 J94604J94213 J94605 A217 A297 A608 A567 A351 B-1900 HastelloyX IN-100 IN-738X IN-792Inconel713C Inconel713LC Inconel718 InconelX-750 M-252 MAR-M200 MAR-M246MAR-M247 NX188(DS) Rene77 Rene80 Rene100 TRWNASAVIA Udimet500 Udimet700Udimet710 Waspaloy WAZ-20(DS) AiResist13 AiResist213 AiResist215 Haynes21Haynes25,L-605 Haynes15

France Material Grade

ATVSMo ATVS2 ATVS7 ATVS7MoATGC1 ATGE ATGE2 ATGF ATGM2 ATGR ATGS3 ATGS4 ATGS8 ATGS9 ATGW0 ATGW1 ATGW2ATGW3 ATGW4 ATGX ATGXX ATG33 ARC1628 ARC6015 NCRALZ NCRALC NCRALK25 KCN22WNW12KCATHf NC15K10DAT KC25NW 28NCD Z6NCT25 Z3NCT25-Z4CDT26 Z10NKC30 Z6NKCDT.38NC19FeNb NC22FeD NC22FeD NC22FeDNb NC15TNbA KC20WN NK15CAT NC20T NC20TA NC20KTANK27CADT NC13AD NCK20D NC20K14 NC20KDTA NK18CDAT NCK18TDA Z12CNKDW20 Z42CKNDW20Z6NCKDW45 ND27FeV NC17DWY NC15Fe 25NC3520 NC21FeDU KCN22W NW12KCATHf NC15K10DATKC25NW Z8NCD

Germany Material Grade

NiMo16Cr NiCr22Mo NiCr21Fe18Mo NiCr20Mo15 NiMo16Cr16Ti S-NiMo16Cr16TiS-NiMo15Cr15 S-NiCr21Fe18Mo S-NiMo27 S-NiMo29 NiMo28 NiCr22Mo6Cu NiCr22Mo7CuS-NiCr16FeMn NiCr20Ti NiCr20TiAl NiCr20Co18Ti NiCo20Cr15MoAlTi NiCo15Cr15MoAlTiS-NiCr20 NiCr15Fe NiCr21Mo5Cu NiCo20Cr20MoTi S-NiCr20Mo9 S-NiCr28Mo S-NiCr27MoS-NiCr29Mo S-NiCr19Mo15 NiCr30 NiCr20CuMo NiCr23Co12Mo NiCr23Co12Mo NiCr19NbMoNiCr15Fe7TiAl GNiCr50Nb NiCr16TiAl S-NiMo28 S-NiCr15FeTi S-NiCr15FeNbS-NiCr20Nb S-NiCr15FeMn S-NiCr20 NiMo30 NiCr20Mo15 G-NiCr50Nb NiCr15FeNiMo16Cr15W S-NiCr20Mo15 G-X40NiCrSiNb3818 X15NiCrNb3221 NiCr23FeG-X40NiCrSiNb3525 X40NiCrNb3525 G-X30CrNiSiNb2424 NiCr22Mo9Nb GX40NiCrSi3525NiCr21Mo G-X10NiCrNb3220 NiCr3020 X10NiCr3220 X12NiCr3618 X12NiCrSi3616G-X40NiCrSi3818 NiCr6015,NiFe20Cr15 G-X50CrNi3030 NiCr8020,NiCr20 NiCr10X10NiCrAlTi3220 G-NiCr28W S-NiCr28W G-NiMo30 G-NiMo16Cr S-NiMo16Cr16WS-NiMo15Cr15W NiCr20Ti NiCr20TiAl NiFe25Cr20NbTi X7CrNiCo212020G-X15CrNiCo212020 X40CrNiCoNb1313 CoCr20W15Ni CoCr20W15Ni GX7CrNiNb1613NiCr20Co18Ti X12CrCoNi2120 NiCr19CoMo NiFeCr12Mo NiCr20Mo X40CoCrNi2020X50CoCrNi2020 CoCr28MoNi X5NiCrTi2615 X8CrNiMoNb1616 NiCr20CbMo NiCr18CoCoCr20Ni20W

Japan Material Grade

NCF600 NCF601 NCF750 NCF751NCF800 NCF800H NCF825 NCF80A NCF1B NCF3 NCF2B