1, Av nplaum xuab zeb yog ib hom pwm (core) xuab zeb nrog av nplaum (av nplaum) raws li binder. Av nplaum xuab zeb molding tseem yog txoj hauv kev tseem ceeb ntawm casting ntau lawm vim nws cov nqi qis thiab tsim nyog rau ntau lawm. Lub cev lub cev ntawm cov av nplaum xuab zeb thiab cov xuab zeb qub hloov vim qhov thermal decomposition ntawm txhua yam hauv cov txheej txheem ntawm kev rov ua dua tshiab. Yog tias lawv siv yam tsis muaj kev tsim dua tshiab, qhov zoo ntawm cov xuab zeb molding yuav tsis ruaj khov. Raws li kev txheeb cais, 30 ~ 40% ntawm cov khoom seem casting yog tshwm sim los ntawm qhov zoo ntawm molding xuab zeb, yog li kev tswj ntawm molding xuab zeb zoo plays lub luag haujlwm tseem ceeb hauv av nplaum xuab zeb molding. Nrog rau kev txhim kho cov kev xav tau ntawm casting, qhov yuav tsum tau ua rau molding xuab zeb zoo dua thiab siab dua.
Ob peb qhov tsis xws luag cuam tshuam nrog kev tsim cov xuab zeb zoo hauv av nplaum xuab zeb molding.
1, Av nplaum xuab zeb yog ib hom pwm (core) xuab zeb nrog av nplaum (av nplaum) raws li binder. Av nplaum xuab zeb molding tseem yog txoj hauv kev tseem ceeb ntawm casting ntau lawm vim nws cov nqi qis thiab tsim nyog rau ntau lawm. Lub cev lub cev ntawm cov av nplaum xuab zeb thiab cov xuab zeb qub hloov vim qhov thermal decomposition ntawm txhua yam hauv cov txheej txheem ntawm kev rov ua dua tshiab. Yog tias lawv siv yam tsis muaj kev tsim dua tshiab, qhov zoo ntawm cov xuab zeb molding yuav tsis ruaj khov. Raws li kev txheeb cais, 30 ~ 40% ntawm cov khoom seem casting yog tshwm sim los ntawm qhov zoo ntawm molding xuab zeb, yog li kev tswj ntawm molding xuab zeb zoo plays lub luag haujlwm tseem ceeb hauv av nplaum xuab zeb molding. Nrog rau kev txhim kho cov kev xav tau ntawm casting, qhov yuav tsum tau ua rau molding xuab zeb zoo dua thiab siab dua. 2 、 Ntau qhov tsis xws luag muaj feem xyuam rau molding xuab zeb zoo hauv av nplaum xuab zeb molding.
1, Av nplaum xuab zeb yog ib hom pwm (core) xuab zeb nrog av nplaum (av nplaum) raws li binder. Av nplaum xuab zeb molding tseem yog txoj hauv kev tseem ceeb ntawm casting ntau lawm vim nws cov nqi qis thiab tsim nyog rau ntau lawm. Lub cev lub cev ntawm cov av nplaum xuab zeb thiab cov xuab zeb qub hloov vim qhov thermal decomposition ntawm txhua yam hauv cov txheej txheem ntawm kev rov ua dua tshiab. Yog tias lawv siv yam tsis muaj kev tsim dua tshiab, qhov zoo ntawm cov xuab zeb molding yuav tsis ruaj khov. Raws li kev txheeb cais, 30 ~ 40% ntawm cov khoom seem casting yog tshwm sim los ntawm qhov zoo ntawm molding xuab zeb, yog li kev tswj ntawm molding xuab zeb zoo plays lub luag haujlwm tseem ceeb hauv av nplaum xuab zeb molding. Nrog rau kev txhim kho cov kev xav tau ntawm casting, qhov yuav tsum tau ua rau molding xuab zeb zoo dua thiab siab dua. 2 、 Ntau qhov tsis xws luag muaj feem xyuam rau molding xuab zeb zoo hauv av nplaum xuab zeb molding.