Peb yuav xaiv cov khoom ntawm cov cua kub kub-hlawv cov hluav taws xob kub?

Kuv yuav xaiv cov khoom siv ntawm cov cua kub qhuav-hlawv cov raj cua kub qhuav?

Cov raj hluav taws xob cua kub qhuav yog qhov tshwj xeeb heev. Cov khoom siv hluav taws xob cua sov raj tsis kho. Nws txiav txim siab los ntawm qhov ntsuas kub ntawm kev siv ib puag ncig los txiav txim siab txog cov khoom hluav taws xob raj siv. Txhawm rau kom ua tau cov kev pabcuam lub neej ntawm cov cua kub qhuav-hlawv cov hluav taws xob cua sov, coj mus sib xws yuav tsum tau nqa tawm.

1. Huab cua cua kub qhuav, cua kub kub, ziab thiab txheej txheem kom qhuav:

Ua ntawv thov siv hluav taws xob ua cua sov, cov khoom tiv thaiv hluav taws xob, tshuab nqus dej, tshuab kom qhuav, pleev xim, pleev xim rau, pleev xim thiab lwm yam khoom).

1.

2. Cua sov ntawm cov khoom hlau:

Feem ntau siv rau cua ntawm cov hlau seem xws li extrusion, txhaj tshuaj pwm, casting pwm, ntim, ntim tshuab seal, thiab lwm yam.

Thaum siv rau cov cua kub pwm, vim muaj cov khoom siv pwm sib txawv thiab cov pwm hluav taws xob nrawm nrawm, thiab cua kub hloov kuj muaj qee lub sijhawm sib txawv.

2.

III. Tau cov khoom siv kub kub ua haujlwm ib puag ncig:

1) Tsawg melting taw tes kub kub yaj: melting ntawm tin, txhuas, zinc, txhuas, thiab lwm yam.

2) Cov tsis muaj hlau kub yaj: melting ntawm paraffin, salpeter thiab lwm yam tshuaj ntsev.