Kaum lub ntsiab lus tseem ceeb ntawm square tube kev kho cua sov:
1. Cov yeeb nkab square thiab fixture yuav tsum raug tshem tawm ua ntej kev kho cua sov ntawm cov roj, cov ntsev seem, xim thiab lwm yam khoom txawv teb chaws;
2. Cov khoom siv uas siv thawj zaug hauv lub tshuab nqus tsev yuav tsum tau degassed thiab purified ua ntej ntawm lub tshuab nqus tsev kawm ntawv tsis qis dua qhov xav tau los ntawm lub workpiece;
3. Lub workpiece uas yooj yim deform nyob rau hauv cov txheej txheem kho cua sov yuav tsum tau rhuab rau ntawm qhov tshwj xeeb fixture. Cov txheej txheem preheating yog: thawj preheating yog 800 degree, theem nrab preheating yog 500-550 degree thiab 850 degree, thiab thawj preheating kub nce ceev yuav tsum tau txwv;
4. Rau lub workpiece nrog complex duab los yog ntse hloov nyob rau hauv seem thiab loj zoo thickness, nws yuav tsum tau preheated;
5. nrog grooves los ntawm lub qhov ntawm lub workpiece, castings thiab vuam qhov chaw thiab ua tiav stainless hlau workpiece, feem ntau yuav tsum tsis txhob muab rhuab nyob rau hauv lub ntsev da dej rauv;
6. Raws li qhov ua tau zoo ntawm cov khoom siv ua haujlwm thiab qhov xwm txheej thickness (qhov tseeb thickness multiplied los ntawm lub workpiece zoo yam), lub square tube cua sov yuav tsum muaj txaus tuav lub sij hawm;
7. Martensitic stainless hlau thiab kub-resistant steel square tube quenching txias rau chav tsev kub yuav tsum tau ntxuav, cryogenic kev kho mob los yog tempering, welding thiab tom ntej no tshav kub kev kho mob ncua sij hawm yuav tsum tsis txhob ntau tshaj 4 teev;
8. Raws li qhov yuav tsum tau ua thiab qhov chaw saum npoo ntawm cov yeeb nkab square siv alkali ntxuav, dej-soluble tu tus neeg saib xyuas, chlorine hnyav sandblasting, txhaj tshuaj blasting thiab lwm txoj kev los ntxuav;
9. Tom qab kev kho yuav tsum qis dua qhov qub tempering kub rau kev ntxhov siab annealing, complex duab los yog loj raws li xav tau ntawm workpiece, tom qab kho nyob rau hauv lub tempering nrog ib tug fixture nrog tempering los kho;
10. Thaum cov khoom siv ntawm lub raj square tsis tsim nyog, kev kho cua sov rov qab tuaj yeem ua tiav, tab sis tus naj npawb ntawm cov quenching rov qab los yog cov tshuaj tov khoom feem ntau tsis ntau tshaj ob zaug. Supplemental tempering ntawm cov raj square tsis suav tias yog kev kho dua. Martensitic stainless hlau thiab kub-resistant steel workpieces nyob rau hauv lub xeev quenched los yog tom qab uas tsis muaj kub tempering yuav tsum tau preheated, annealed los yog tempered ntawm kub kub ua ntej quenching.
