Khoom Taw Qhia

Poob ciab casting ntawm tin bronze peb-txoj kev valve lub cev

Ib qho los ntawm lub valve thiab lub cev lub cev muaj feem cuam tshuam nrog kev ua haujlwm ntawm cov li qub. Lub bracket txuas yog detachably txuas nrog lub rooj sib txuas; Ib kab noj thawj zaug, ib kab noj ob thiab ib kab noj peb kab noj sib txuas sib txuas ua ke nyob rau hauv cov kab sib txuas, thiab cov kab noj hniav ntawm thawj kab noj hniav, qhov thib ob kab noj hniav thiab cov kab noj hniav thib peb yog txhua yam muab los ntawm qhov; Lub valve tseem ceeb muaj xws li lub valve qia uas nkag mus rau hauv thiab yog slidably txuas nrog lub rooj sib txuas thiab lub rooj sib txuas, thiab lub piston sab sauv thiab lub piston sab sauv uas txuas nrog lub valve qia, nyob rau sab sauv piston sib dhos nyob rau hauv thawj kab noj hniav thiab qis piston sib dhos yog nyob rau hauv peb kab noj hniav. Lub clamping thaiv nrog cov hniav ntawm lub rooj sib txuas yog sib txuam nrog lub clamping zawj nrog cov hniav ntawm cov hlua txuas, uas yooj yim rau kev sib dhos tsis siv neeg thiab muaj kev lag luam ntau lawm; Siv cov yas, nws yog lub teeb thiab tsis yooj yim rau corroded los ntawm cov kua dej, uas tuaj yeem ua rau lub neej ntev ntawm peb txoj kev valve.

Kev nqis peev casting yog ib txoj kev tshiab ntawm cov hlau casting, tseem hu ua pwm puv, vaporization thiab kab noj hniav tsis muaj casting. Tus qauv yog ua los ntawm FOAMED PLASTIC, feem ntau nthuav tau polystyrene. Cov pwm zoo yog ntim nrog FOVNDRY SAND los tsim pwm, thiab yog li pwm tsis zoo. Thaum molten hlau yog txhaj rau hauv pwm (uas yog, cov pwm ua los ntawm polystyrene), ua npuas ncauj yog evaporated los yog ploj, tawm hauv cov pwm tsis zoo ntawm casting xuab zeb tag nrho ntawm cov hlau molten. Txoj kev casting no tom qab tau txais los ntawm kev lag luam duab puab, thiab nws kuj tau siv hauv kev tsim khoom.

Casting yog txheej txheem kub ua haujlwm thaum ntxov ntawm tib neeg, nrog keeb kwm txog 6000 xyoo. Hauv 3200 BC, bronze frog castings tshwm hauv Mesopotamia. Nyob nruab nrab ntawm lub xyoo pua 13th BC thiab 10th caug xyoo BC, Tuam Tshoj tau nkag mus rau lub hnub qub ntawm bronze casting, thiab nws cov thev naus laus zis tau mus txog qib siab. Piv txwv li, Simuwu Fang Ding hnyav 875kg nyob rau hauv Shang Dynasty, Ceng Houyi Zunpan nyob rau hauv Warring States Lub sij hawm thiab pob tshab iav nyob rau hauv Western Han Dynasty yog tag nrho cov khoom sawv cev ntawm ancient casting. Thaum ntxov casting tau cuam tshuam los ntawm cov tais diav, thiab feem ntau ntawm cov castings yog cov cuab yeej lossis cov khoom siv rau kev ua liaj ua teb, kev ntseeg thiab lub neej, nrog cov xim zoo nkauj. Nyob rau hauv 513 BC, Tuam Tshoj pov thawj cov ntaub ntawv sau tseg thaum ntxov nyob rau hauv lub ntiaj teb no - lub Ding ntawm lub xeev Jin (hnyav txog 270 kg). Nyob ib ncig ntawm lub xyoo pua 8th, Tebchaws Europe pib tsim cov hlau castings. Tom qab kev lag luam kiv puag ncig nyob rau hauv lub xyoo pua 18th, castings nkag mus rau lub sijhawm tshiab ntawm kev pabcuam rau kev lag luam loj. Nyob rau hauv lub xyoo pua 20th, txoj kev loj hlob ntawm casting yog ceev heev. Cov hlau tsis muaj hlau, cov hlau tsis muaj hlau, cov hlau tsis tshua muaj carbon steel, Al-Cu, Al-Si, Al-Mg alloy, Ti-raws li thiab Ni-raws li alloy thiab lwm cov ntaub ntawv hlau casting tau tsim ua tiav, thiab cov txheej txheem tshiab ntawm inoculation. kev kho mob rau grey cam khwb cia hlau tau tsim.

Peb yog cov chaw tsim khoom ntawm Tin bronze peb-txoj kev valve lub cev poob ciab castings, yog tias koj xav tau cov ntaub ntawv ntxiv thov hu rau peb!

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