Marata esimbi asingapfeki ane ndiro yakaderera-kabhoni simbi uye alloy isingapfeki layer, ine alloy isingapfeki layer inowanzo sanganisira 1/3 kusvika 1/2 yehupamhi hwese. Munguva yekushanda, iyo base zvinhu inopa yakazara zvimiro senge simba, kuoma, uye ductility kuramba masimba ekunze, nepo alloy kupfeka-inodzivirira layer inopa kupfeka kuramba kunogadzirirwa kune chaiwo mamiriro ekushanda.
Iyo alloy kupfeka-resistant layer uye base zvinhu zvakasungwa nemetallurgically. Uchishandisa midziyo yakasarudzika uye otomatiki welding process, yakakwira-kuoma, self-shielding alloy waya inosungirirwa zvakafanana kune base zvinhu. Iyo composite layer inogona kuve imwe, mbiri, kana kunyange akawanda layer. Nekuda kwekusiyana kwe alloy shrinkage ratios, mayunifomu akatsemuka akatsemuka anokura panguva yelamination process, chiratidzo chesimbi isingapfekeki.
Iyo alloy kupfeka-resistant layer inonyanya kuumbwa nechromium alloy, iine mamwe alloying zvinhu zvakaita se manganese, molybdenum, niobium, uye nickel yakawedzerwa. Iyo carbides mumetallographic chimiro ine fibrous, ine mafiber akatariswa perpendicular kumusoro. Iyo carbide microhardness inogona kusvika pamusoro peHV 1700-2000, uye kuoma kwepamusoro kunogona kusvika HRC 58-62. Alloy carbides yakagadzikana zvakanyanya pakupisa kwepamusoro, kuchengetedza kuoma kwakanyanya uye yakanakisa oxidation kuramba, zvichibvumira kushanda kwakazara mukati metembiricha inosvika 500 ° C.
Iyo yekupfeka-inodzivirira layer inogona kuoneka yakamanikana (2.5-3.5mm) kana yakafara (8-12mm) mapatani, pamwe neyakakombama (S uye W) mapatani. Inonyanya kuumbwa nechromium alloys, aya alloys anewo manganese, molybdenum, niobium, nickel, uye boron. Iyo carbides inogoverwa mune fibrous pateni mune metallographic chimiro, ine mafibers anomhanya perpendicular kumusoro. Iine carbide zviri mukati me40-60%, iyo microhardness inogona kusvika pamusoro peHV1700, uye kuoma kwepasi kunogona kusvika HRC58-62. Mahwendefa esimbi asingapfeki anonyanya kukamurwa kuva mapoka matatu: general-chinangwa, kukanganisa-resistant uye yakakwirira-yekushisa inodzivirira. Hukobvu hwese hwemarata esimbi asingapfeki hunogona kunge hudiki se5.5 (2.5+3) mm uye hukobvu se30 (15+15) mm. Marata esimbi asingapfeki anogona kukungurutswa kuita mapaipi asingapfeki ane dhayamita diki yeDN200, uye anogona kugadziriswa kuita magokora asingapfeki, matei asingapfeki uye zvinoderedza kusapfeka.
Nguva yekutumira: Sep-24-2025