Tá úsáid píopaí cruach dhosmálta níos mó agus níos forleithne anois. Mar gheall ar a fhriotaíocht creimeadh maith, tá ról ríthábhachtach aige i dtógáil innealtóireachta. Le linn an phróisis táirgthe, ní mór dúinn cóireáil réitigh soladach a dhéanamh ar phíopaí cruach dhosmálta. Is é an príomhchuspóir a fháil áirithe Martensite méaduithe ar an cruas an táirge. Breathnaímid ar an gcóireáil réitigh soladach ar phíopaí cruach dhosmálta thíos:
(1) Intermediate aging method heats to (760±15) degree after solution treatment, keeps holding for 90min, because Cr23C6 carbide precipitates from austenite, which reduces the content of carbon and alloying elements in the austenitic 904L stainless steel tube , The Ms point is raised to 70 degree and then cooled to room temperature to obtain martensite plus ferrite plus retained austenite structure, and the retained austenite is decomposed after aging at 510 degree .
(2) Tar éis coigeartú teocht ard agus cóireáil chrióigineach, teas go 950 céim agus coinnigh ar feadh 90 nóiméad tar éis réiteach soladach. Toisc go bhfuil an pointe Ms ardaithe, is féidir méid beag martensite a fháil trí fhuarú go teocht an tseomra; ina dhiaidh sin, is féidir é a fháil trí chóireáil fuar ag -70 céim agus a shealbhú ar feadh 8 uair an chloig. An méid martensite.
(3) After the cold deformation method and solution treatment, it is cold deformed at room temperature. The amount of martensite formed in the 904L seamless tube during cold deformation is related to the deformation and the composition of the 904L stainless steel tube.
The above three methods are commonly used methods of solid solution treatment of stainless steel pipes. Hope to help everyone.