Heat Treatment Zvinodiwa kune High-Simba Bolts

High-simba mabhoti zvinhu zvakakosha mune dzakasiyana siyana engineering maapplication, anosanganisira kuvaka, mota, uye maindasitiri emuchadenga. Kuita kwavo kunonyanya kutsamira pamaitiro ekupisa, ayo anosimudzira mashandiro avo emuchina, senge simba rekusimba, kuoma, uye kuneta kuramba. Kurapa kwekupisa kwemabhaudhi akasimba kunowanzo sanganisira matanho matatu makuru: kudzima, kudzikamisa, uye kuderedza kushushikana.

Kudzima ndiyo nhanho yekutanga mukupisa kurapwa. Thehex mabhaudhivanodziyirwa kusvika kune tembiricha pamusoro penzvimbo yavo yakakosha yekushandura, kazhinji pakati pe850 ° C uye 950 ° C, zvichienderana nekuumbwa kwezvinhu. Iyi tembiricha inochengetedzwa kwenguva yakakwana kuti ive nechokwadi cheuniform austenitic chimiro mukati mebhoti. Mushure mekupisa, mabhoti anokurumidza kutonhora, kazhinji mumafuta kana mvura, kushandura austenite kuita martensite, yakaoma uye yakaoma microstructure. Uku kutonhora nekukurumidza kwakakosha pakuwana kuoma kwakanyanya uye simba.

Kudzikamisa kunotevera kudzimura kuderedza brittleness uye kunatsiridza kuoma kwemabhaudhi. Mabhaudhi anodziswa zvakare kune tembiricha iri pakati pe400 ° C uye 600 ° C, iyo inobvumira iyo martensite kuti ichinje kuita imwe ductile chimiro inozivikanwa se tempered martensite. Iyo tembiricha yekudziya uye nguva inodzorwa nekuchenjera kuti iwane chiyero chinodiwa pakati pesimba nekuoma. Kunyanya kushatirwa kunogona kutungamira mukurasikirwa kwesimba, nepo kushomeka kunogona kukonzera kusakwana kuoma.

Stress Relieving ndiyo danho rekupedzisira mukupisa kurapwa. Mushure mekudzima uye kudziya, kushushikana kwakasara kunogona kunge kuchiripo mumabhaudhi nekuda kwekukurumidza kutonhora uye shanduko yechikamu. Kubvisa kushushikana kunosanganisira kudziyisa mabhaudhi kune tembiricha iri pasi petembiricha yekudziya, kazhinji kutenderedza 200°C kusvika 300°C, uye kuabata patembiricha iyi kwenguva yakati. Iyi nzira inobatsira kuderedza kushushikana kwemukati, kuvandudza dimensional kugadzikana uye kuneta kuramba kweiyomabhaudhi.

Pamusoro pematanho ekutanga aya, maitiro ekupisa ekupisa mabhaudhi akasimba anofanirwa kufunga nezvezvinhu zvakaita sekuumbwa kwezvinhu, saizi yebhaudhi, uye chinangwa chekushandiswa. Semuenzaniso, alloying zvinhu senge chromium, molybdenum, uye vanadium zvinogona kusimudzira kuomarara uye kudziya kuramba kwemabhaudhi, zvichibvumira kunyatso kudzora pamusoro pemichina yavo.

Mukupedzisa, kurapwa kwekupisa kwepamusoro-simba mabhoti inzira yakaoma uye yakaoma iyo inonyanya kukanganisa kushanda kwavo. Kunyatsoitwa kudzima, kudzikamisa, uye kuderedza kushushikana kunovimbisa kuti mabhaudhi anozadzisa zvakaomesesa zvinodiwahigh-simbamaapplication, achipa kuita kwakavimbika uye kwakasimba munzvimbo dzinoda.