Cold-dov yeeb nkab tsis zoo thiab kev tiv thaiv

Lub ntsiab tsis zoo ntawm cov kav dej txias-dov steel muaj xws li: cov phab ntsa tuab tsis sib xws, kev ua siab ntev sab nrauv, qhov tawg, wrinkles, yob folds, thiab lwm yam.

① Kev txhim kho phab ntsa tuab qhov tseeb ntawm lub raj khoob yog ib qho tseem ceeb los xyuas kom meej cov phab ntsa tuab ntawm cov kav dej txias-kuav los tiag.

② Ua kom cov phab ntsa tuab qhov tseeb thiab cov khoom zoo ntawm lub raj tsis muaj, lub lubrication zoo thiab qhov kawg ntawm lub raj dov lub cuab yeej yog qhov tseem ceeb lav rau kev txhim kho phab ntsa tuab qhov tseeb ntawm lub raj txias txias. Tshaj-pickling lossis under-pickling ntawm lub raj khoob yuav tsum tau tiv thaiv, thiab qhov chaw ntawm lub raj khoob yuav tsum tau tiv thaiv kom tsis txhob over-pickled lossis under-pickled. Yog tias pitting lossis seem hlau oxide nplai raug tsim, ntxiv dag zog rau cov cua txias ntawm cov yeeb nkab dov cov cuab yeej thiab tshuaj xyuas cov cuab yeej nto zoo, thiab tam sim ntawd hloov cov mandrel rods tsis tsim nyog thiab dov zawj blocks.

③ Tag nrho cov kev ntsuas kom txo tau cov dov quab yuam yog qhov tsim nyog rau kev txhim kho lub sab nraud txoj kab uas hla ntawm cov yeeb nkab steel, nrog rau kev ua kom lub raj tsis muaj, txo cov dov deformation, txhim kho lub lubrication zoo ntawm lub raj dawb paug thiab qhov chaw tiav ntawm lub raj dov. cuab yeej, thiab lwm yam., Siv cov khoom siv nrog lub zog siab thiab hardness los ua cov yeeb nkab dov cov cuab yeej, thiab ntxiv dag zog rau cov cua txias thiab tshuaj xyuas cov yeeb nkab dov cov cuab yeej. Thaum cov yeeb nkab dov cov cuab yeej tau pom tias hnav hnyav heev, lawv yuav tsum tau hloov nyob rau lub sijhawm kom tsis txhob muaj qhov sib txawv ntawm cov yeeb nkab steel los ntawm kev ua siab ntev.

④ Cov kab nrib pleb ntawm cov kav hlau uas ua rau lub caij txias dov yog tshwm sim los ntawm qhov tsis sib xws ntawm cov hlau. Txhawm rau tiv thaiv cov kab nrib pleb hauv cov yeeb nkab steel thaum lub caij txias, lub raj khoob yuav tsum tau muab tshem tawm thaum tsim nyog los tshem tawm cov hlau ua hauj lwm hardening thiab txhim kho cov yas ntawm cov hlau.

⑤ Tus nqi ntawm dov deformation muaj qhov cuam tshuam tseem ceeb ntawm cov kab nrib pleb ntawm cov kav dej txias txias. Kev txo qis ntawm qhov deformation yog ib txoj hauv kev zoo heev los txo cov kab nrib pleb ntawm cov kav hlau.

⑥ Txhim kho qhov kawg ntawm cov yeeb nkab dov cov cuab yeej thiab cov roj lubrication zoo ntawm cov yeeb nkab blanks yog cov kev ntsuas kom tiv thaiv cov kab nrib pleb hauv cov kav hlau.

⑦ Los ntawm annealing thiab kub kho lub raj dawb paug kom txo tau qhov deformation tsis kam ntawm cov hlau, txo qhov deformation, thiab txhim kho lub raj dov cov cuab yeej thiab lubrication zoo, thiab lwm yam, nws yog qhov zoo los txo qhov tshwm sim ntawm cov yeeb nkab steel. dov folding thiab khawb qhov tsis xws luag.