Kev xaiv cov khoom siv rau cov dej yuav tsum txiav txim siab raws li cov xwm txheej xws li qhov xwm txheej ntawm lub nrawm nrawm, kev nyuab siab, kev nyuab siab, kev kub ntxhov, thaj chaw, kev pabcuam lub neej, kev xav tau ntawm kev siv hlau nplaum, , thiab tus nqi.
Carbon caij nplooj ntoos hlav steel hlau thiab piano hlau tsim loj residual kev nyuab siab tom qab txias daim duab. Tom qab ua haujlwm hauv lub caij nplooj ntoos hlav, muaj ntau qhov kev nyuab siab, thiab qhov hloov ntawm qhov ntev tom qab tempering loj loj, thiab nws yog ib qho nyuaj rau kev tswj qhov tseeb qhov tseeb. Cov roj quenched thiab tempered hlau hlau yog modulized thiab strengthened tom qab hlau hlau yog kos rau qhov qhia txog me me. Yeej tsis muaj kev ntxhov siab ntxiv. Tom qab tsim lub caij nplooj ntoos hlav, qhov kub hloov tom qab kub tsis txias, hloov qhov me me, thiab qhov sov sov yog qhov zoo tshaj qhov txias txias. Reinforce steel hlau.
Rau lub caij nplooj ntoos hlav khoom caij nplooj ntoos hlav, lub voj voos yuav tsum yog qhov zoo dua. Cov ntawv xov xwm square thiab cov duab sib tshuam muaj cov kabmob uas muaj peev xwm, muaj peev xwm ua haujlwm zoo, thiab me me dej, tab sis yog qhov khoom siv me me. Thiab tus nqi ntau dua, tshwj tsis yog kev tshwj xeeb, feem ntau sim tsis siv cov khoom siv no. Nyob rau hauv xyoo tsis ntev los no, kev tshawb nrhiav thiab kev txhim kho ntawm cov voj hlau hlau tiaj tus tsis siv lub tshuab hlau hlau trapezoidal hlau, tau tiav zoo heev.