1.7227, DIN 42CrMoS4, AISI 4140

GENERAL CHARACTERISTICS

AISI 4140 simbi ndeye yakaderera alloy yepakati kabhoni simbi ine chromium, molybdenum, uye manganese.

AISI 4140 Steel Material Properties

AISI 4140 simbi ndeye yakaderera alloy yepakati kabhoni simbi ine chromium, molybdenum, uye manganese.

Inotariswa zvakanyanya mumaindasitiri mazhinji nekuda kweiyo yakasarudzika michina zvimiro, senge simba rakawanda, kuramba kuneta, uye kuoma. Izvi zvinoita kuti ive sarudzo yakanaka yekugadzira zvinhu zvemuchina senge shafts, magiya, uye mabhaudhi, pamwe nezvikamu zvemotokari.

Kusanganiswa kwayo kunoshamisa kwesimba, ductility, uye kushomeka kuramba kunoreva kuti inogona kumirisana nenzvimbo dzakaomarara dzemaindasitiri uko kushushikana uye kunetsa kwakajairika.

AISI 4140 simbi chinhu chinochinjika uye chakavimbika chekushandisa mukuda maapplication.

AISI 4140 simbi Specification

Nhamba yeUNS yeAISI 4140 Steel ndiyo UNS G41400. AISI 4140 simbi zvinhu zvakatemwa ndezvi:

1.ASTM A 193: Giredhi B7, B7M,

2.ASTM A29, A 322, A331, A506, A513, A519, S646, A 752: Giredhi 4140,

3.SAE J404: Giredhi 4140,

4.EN 10250: Giredhi 42CrMo4 (1.7225),

5.BS 970: Giredhi 42CrMo 4, 7.DIN 17200: Giredhi 42CrMo4 (1.7225)

AISI 4140 simbi Equivalent zvinhu

AISI 4140 chikamu cheiyo 41xx yakatevedzana yeSAE simbi uye ine akati wandei akaenzana zvinhu zviripo pamusika nhasi. Zvimwe zvacho zvinosanganisira:

1.Giredhi 42CrMo4 (1.7225)

2.JIS G4105- Giredhi SCM440

3.AS 1444-Giredhi 4140

4.ASTM A29, A 322, A331, A506, A513, A519, S646, A 752: Giredhi 4140

Imwe neimwe yeiyi yakaenzana zvinhu ine yayo yakasarudzika seti yemakemikari ekuumbwa, michina zvimiro, uye inodiwa mashandisirwo. Kuziva dzimwe nzira idzi kunobvumira mainjiniya nevagadziri kuti vasarudze zvinhu zvakanyatsokodzera kune zvavanoda chaizvo. Izvi zvinova nechokwadi chekuti zvigadzirwa zvavo zvine hunhu hunodiwa senge simba, ductility, uye kuoma.

4140 simbi zvinoreva

AISI 4140 Chemical Compositions

AISI 4140 simbi chinhu chakasiyana-siyana uye chakavimbika chinogona kudzimwa nekudzikamiswa kuti uwane simba repamusoro uye kuoma. Inowanzo shandiswa kune zvakasimbiswa zvakanyanya mukuvaka mota, pamwe neyemakanika engineering application uko kudzima uye kuomeswa kwepasi kunodiwa.

Kusimba kwesimbi kweAISI 4140 simbi kunowanzo kutenderedza 95 Ksi (655 MPa), nepo kushoma kwegoho re60.2 Ksi (415 MPa). Kuomarara kwesimbi kunosiyana zvichienderana netembiricha yainorapwa nekuoma, kazhinji kubva pa217 HB kusvika pa241 HB.

AISI 4140 simbi isarudzo yakanaka kwazvo yekuda maapplication uko kusimba, kuoma, uye kuoma kunodiwa. Kuwanda kwayo uye kuvimbika kunoita kuti ive sarudzo yakakurumbira pakati peinjiniya nevagadziri zvakafanana.

AISI 4140 Heat Treatment

AISI 4140 simbi ndeyepamusoro-mhando zvinhu zvinopa yakanaka michina zvivakwa kana yadzimwa uye kushatirwa. Iyo inowanzoshandiswa pakuvaka zvikamu mukugadzira mota uye mota nekuda kwesimba rayo rakavimbika uye kuramba kuneta.

Kuti uwane simba rinodiwa uye kuoma, AISI 4140 simbi inopinda maitiro ekupisa anosanganisira kuomesa uye kunotevera kupisa kwezvinhu. Iyo yekupisa kurapwa inogona kunyatsodzorwa kugadzirisa hukama pakati pekuoma nekuoma.

Kuomesa simbi kunosanganisira kudziyisa simbi iri pakati pe820°C ne860°C isati yakurumidza kuitonhodza mubhavhu remafuta kana mumvura. Iyo inotevera tembiricha yekupisa inoenderana nesimba rinodiwa, uye simbi inofanirwa kudzikiswa nekukurumidza sezvinobvira mushure mekuoma kuti isatsemuka. Mushonga wekupisa mukati metembiricha ye540°C kusvika 680°C nekuzotonhodzwa kwemhepo kunokurudzirwa.

Mishonga yakasiyana-siyana yekupisa inogona kuiswawo kuAISI 4140 simbi, yakadai seyekuputira pa800°C kusvika 850°C nekutonhora kwechoto, normalizing pa 870°C kusvika 900°C ichiri kutonhora mhepo, uye kudzima pa820°C kusvika 860°C. C ichiteverwa nekudzimwa kwemvura. Kupisa kunowanzoitwa patembiricha ye540°C kusvika 980°C, ichinyura kweawa imwe pa inch ukobvu ichiteverwa nekutonhodza kwemhepo.

AISI 4140 Steel Welding

Kana welding AISI 4140 simbi, preheating zvinhu zvakakosha kuti uve nechokwadi chekubatanidzwa kwezvidimbu zviviri. Preheating yakakodzera inobatsira kudzivirira kutsemuka uye inova nechokwadi chekuti weld yakasimba uye yakasimba.

AISI 4140 simbi inogona kugadzirwa uchishandisa nzira dzakasiyana dzinosanganisira Stick welding, TIG welding, uye MIG welding. Imwe neimwe nzira inoda maitiro akasiyana uye michina, asi ese anogona kuburitsa yakanaka weld kana ikaitwa nemazvo.

Kusarudzwa kweiyo welding nzira kunoenderana nezvakati wandei zvakaita sekukora kwezvinhu, rudzi rwejoinhi, uye kusimba kunodiwa kweweld. Izvo zvakakosha kuti usarudze yakafanira welding nzira inonyatso kuenderana nechaiyo application uye kutevedzera kwakaringana welding maitiro kuti uve nechokwadi chemhando yepamusoro weld.

AISI 4140 Steel Uses

AISI 4140 simbi chinhu chakasiyana-siyana chinowanzo shandiswa muinjiniya yemakanika kune dzakasiyana siyana dzekushandisa. Mimwe mienzaniso inosanganisira:

·Machine components

·Axles

·Magumbo ekutungamirira

·Kubatanidza tsvimbo

·Crankshafts

·Transmission shafts

·Pions

·Magiya

·Ngoma

·Base plates

·Nhengo dzemuviri