YAYA AKE YIN GILAS MAI TSARKI?

Gilashin mai zafi ya fi "talakawa," ko gilashin da aka yi wa fenti sau huɗu ƙarfi. Kuma ba kamar gilashin da aka yi wa fenti ba, wanda zai iya farfashewa ya zama guntu-guntu idan gilashin ya karye, ya karye ya zama ƙananan guntu, marasa lahani. Sakamakon haka, ana amfani da gilashin da aka yi wa fenti a wuraren da amincin ɗan adam ya zama matsala. Aikace-aikacen sun haɗa da tagogi na gefe da na baya a cikin ababen hawa, ƙofofin shiga, wuraren shawa da baho, filayen wasan racquetball, kayan daki na baranda, tanda na microwave da fitilun sama.

Domin shirya gilashi don tsarin dumama, dole ne a fara yanke shi zuwa girman da ake so. (Rage ƙarfi ko gazawar samfur na iya faruwa idan wani aikin ƙera, kamar ƙera ko ƙera, ya faru bayan an yi amfani da zafi.) Sannan a duba gilashin don ganin ko akwai kurakurai da ka iya haifar da karyewa a kowane mataki yayin dumama. Gilashin gogewa kamar takarda mai yashi yana cire gefuna masu kaifi daga gilashin, wanda daga baya ake wanke shi.
TALLA

Bayan haka, gilashin zai fara aikin sarrafa zafi wanda zai ratsa ta cikin tanda mai dumama wuta, ko dai a cikin rukuni ko kuma a ci gaba da ciyarwa. Murhun yana dumama gilashin zuwa zafin da ya wuce digiri 600 na Celsius. (Matsakaicin masana'antu shine digiri 620 na Celsius.) Sannan gilashin zai yi aikin sanyaya iska mai ƙarfi da ake kira "quenching." A lokacin wannan aikin, wanda ke ɗaukar daƙiƙa kaɗan, iska mai ƙarfi tana harba saman gilashin daga jerin bututun ƙarfe a wurare daban-daban. Kashewa yana sanyaya saman gilashin da sauri fiye da tsakiya. Yayin da tsakiyar gilashin ke sanyaya, yana ƙoƙarin ja da baya daga saman waje. Sakamakon haka, tsakiyar yana ci gaba da kasancewa cikin tashin hankali, kuma saman waje yana shiga cikin matsi, wanda ke ba gilashin mai zafi ƙarfi.

Gilashin da ke cikin matsin lamba yana karyewa sau biyar cikin sauƙi fiye da yadda yake a lokacin matsewa. Gilashin da aka rufe zai karye a fam 6,000 a kowace murabba'in inci (psi). Gilashin da aka ɗaure, bisa ga ƙayyadaddun ƙa'idodi na tarayya, dole ne ya kasance yana da matsi na saman 10,000 psi ko fiye; gabaɗaya yana karyewa a kusan psi 24,000.

Wata hanyar yin gilashin da aka yi wa tempered shine sinadari mai tacewa, inda sinadarai daban-daban ke musayar ions a saman gilashin don haifar da matsi. Amma saboda wannan hanyar ta fi tsada fiye da amfani da tanda mai tacewa da kashewa, ba a amfani da ita sosai.