201 Icyuma
Ibirimo umuringa: J4> J1> J3> J2> J5.
Ibirimo karubone: J5> J2> J3> J1> J4.
Gahunda yo gukomera: J5, J2> J3> J1> J4.
Itondekanya ryibiciro kuva hejuru kugeza hasi ni: J4> J1> J3> J2, J5.
J1 Co Umuringa wo hagati）: Ibirimo bya karubone birenze gato J4 naho umuringa uri munsi ya J4.Imikorere yayo yo gutunganya iri munsi yaJ4.Irakwiriye gushushanya bisanzwe bidasanzwe no gushushanya byimbitse, nkibibaho byo gushushanya, ibicuruzwa by isuku, sink, umuyoboro wibicuruzwa, nibindi.
J2, J5: Imiyoboro ishushanya: Imiyoboro yoroshye yo gushushanya iracyari nziza, kubera ko ubukana buri hejuru (haba hejuru ya 96 °) kandi gusya ni byiza cyane, ariko umuyoboro wa kare cyangwa umuyoboro uhetamye (90 °) ukunda guturika.
Kubireba isahani iringaniye: kubera ubukana bwinshi, ubuso bwibibaho ni bwiza, hamwe no kuvura hejuru nka
gukonjesha, gusya no gufata isahani biremewe.Ariko ikibazo kinini nikibazo cyo kunama, kugoreka biroroshye kumeneka, kandi igikuba kiroroshye guturika.Kwaguka nabi.
J3 Co Umuringa muto）: Birakwiriye kubitaka byo gushushanya.Gutunganya byoroshye birashobora gukorwa kumurongo wo gushushanya, ariko ntibishoboka hamwe ningorabahizi.Hano haribitekerezo byerekana ko isahani yogosha yunamye, kandi hariho ikibaho cyimbere nyuma yo kumeneka (titani yumukara, urutonde rwibara ryamabara, isahani yumucanga, kumeneka, kuzinga hamwe nimbere).Ibikoresho byo kurohama byagerageje kunama, dogere 90, ariko ntibizakomeza.
J4 pper Umuringa muremure）: Ni impera yo hejuru yuruhererekane rwa J.Birakwiriye kubwoko buto bwibicuruzwa byimbitse.Ibyinshi mubicuruzwa bisaba gutoranya umunyu mwinshi hamwe no gupima umunyu bizabihitamo.Kurugero, ibyombo, ibikoresho byo mu gikoni, ibicuruzwa byo mu bwiherero, amacupa y’amazi, flasike ya vacuum, inzugi zumuryango, ingoyi, nibindi.
J1 J2 J3 J4 J6 Ibigize imiti:
| Icyiciro | C | Mn | Si | P | S | Cr | Mo | Ni | Cu | N |
| J1 | 0.12 max | 9.0-11.0 | 0,80 max | 0.050 max | 0.008 max | 13.50 - 15.50 | 0,60 max | 0.90 - 2.00 | 0.70 min | 0.10 - 0.20 |
| J2 | 0,20 max | 9.0 min | 0,80 max | 0.060 max | 0.030 max | 13.0 min | 0,60 max | 0.80 min | 0,50 max | 0,20 max |
| J3 | 0.15 max | 8.5-11.0 | 0,80 max | 0.050 max | 0.008 max | 13.50 - 15.00 | 0,60 max | 0.90 - 2.00 | 0.50 min | 0.10 - 0.20 |
| J4 | 0.10 max | 9.0-11.0 | 0,80 max | 0.050 max | 0.008 max | 14.0 - 16.0 | 0,60 max | 0.90 - 2.00 | 1.40 min | 0.10 - 0.20 |
| J6 | 0.15 max | 6.5 min | 0,80 max | 0.060 max | 0.030 max | 13.50 min | 0,60 max | 3.50 min | 0.70 min | 0.10 min |
Igihe cyo kohereza: Nyakanga-07-2020