Dab tsi yog qhov tshwm sim ntawm cov cua sov tsis zoo ntawm cov sim hluav taws xob rauv?

1. Decarburization ntawm qhov chaw: cua sov nyob rau hauv ib qho chaw oxidizing yog ib qho yooj yim rau decarburize, high-carbon steel yog ib qho yooj yim rau decarburize, thiab steel nrog ntau silicon kuj yog ib qho yooj yim decarburize. Decarburization txo lub zog thiab qaug zog kev ua haujlwm ntawm qhov chaw thiab tsis muaj zog hnav tsis kam.

2. Carburization ntawm qhov chaw: Forgings rhuab los ntawm hluav taws xob furnaces feem ntau muaj carburization ntawm qhov chaw los yog ib feem ntawm qhov chaw. Carburization deteriorates lub machining kev ua tau zoo ntawm cov forgings, thiab nws yog ib qho yooj yim mus ntaus riam thaum txiav.

3. Overheating ntawm qhov chaw: Overheating yog hais txog qhov tshwm sim uas cov cua kub ntawm cov hlau dawb paug yog siab dhau lawm, los yog lub sij hawm nyob rau hauv lub sij hawm ntev dhau lawm nyob rau hauv lub teev forging thiab tshav kub kev kho mob kub ntau yam, los yog qhov kub thiab txias yog siab dhau heev lawm vim lub thermal nyhuv.

4. Kev kub nyhiab ntawm qhov chaw: Rau cov pa roj carbon steel, cov ciam teb ntawm cov nplej yaj thaum lub sij hawm overburning, thiab thaum lub cuab yeej steel (high-speed steel, Cr12 steel, thiab lwm yam) yog overburned, lub grain ciam yuav tshwm herringbone zoo li ledeburite vim melting. Grain ciam teb daim duab peb sab melting daim duab peb sab thiab remelting npas tshwm thaum txhuas alloy yog overburned. Tom qab forging yog over-burned, nws yog feem ntau tsis yooj yim sua kom txuag nws thiab yuav tsum tau muab pov tseg.

5. Thaum tshav kub kub tawg ntawm qhov chaw: Yog tias tus nqi ntawm thermal kev nyuaj siab tshaj qhov kev txwv lub zog ntawm qhov khoob, cov cua sov tawg ntawm qhov chaw mus rau qhov chaw yuav raug tsim, ua rau tag nrho cov seem tawg.

6. Copper brittleness lossis steel brittleness: tooj liab brittleness zoo nkaus li tawg rau ntawm qhov chaw ntawm forging. Thaum pom ntawm qhov loj loj, lub teeb daj tooj liab (lossis tooj liab cov tshuaj tov) raug faib raws li cov ciam teb.