Yooj yim thiab yooj yim txoj kev rau nto blackening kev kho mob ntawm hluav taws xob cua sov raj

​Yooj yim thiab yooj yim txoj kev rau nto blackening kev kho mob ntawm hluav taws xob cua sov raj

1. Ua ntej, ntxuav qhov chaw ntawm cov yeeb nkab hlau kom huv si;

2. Qhov thib ob yog kev kho degreasing ntawm qhov chaw. Hauv cov txheej txheem no, cov raj hlau tuaj yeem muab tso rau hauv cov kua degreasing tag nrho. Tus nqi pH ntawm cov kua degreasing zoo dua nyob ib puag ncig 13, thiab lub sijhawm tsis pub tsawg tshaj li ib nrab teev. Yaug nrog dej tom qab degreasing.

3. Tom ntej no, pickling tuaj yeem nqa tawm. Lub pH ntawm cov tshuaj pickling yog li 3, thiab lub sijhawm kho tsis pub ntev tshaj 10 feeb. Tom qab pickling, yaug nrog dej;

4. Blackening kev kho mob: tus nqi pH ntawm lub pas dej da dej yog nyob nruab nrab ntawm 2-4, thiab lub sij hawm kho yog 10 feeb nce thiab nqis. Tom qab blackening, nws yog heev huv si;

5. Thaum kawg, ziab thiab oiling;

Tus nqi calorific yog proportional rau cov khoom ntawm square ntawm tam sim no thiab kuj. Lub hauv paus ntsiab lus ntawm cov nyhuv thermal tam sim no: cov hluav taws xob tau nrawm dua hauv thaj chaw hluav taws xob, nce lub zog kinetic, muaj kev nrawm, thiab tom qab ntawd sib tsoo nrog lwm cov khoom (atoms, molecules, atomic pawg) ua rau lwm cov khoom tau txais lub zog kinetic, ua rau qhov nruab nrab nce ntxiv. kinetic zog thiab kub. Lub hauv paus ntsiab lus ntawm kev ua haujlwm cua sov raj Joule-Lenz txoj cai: Thaum tam sim no dhau los ntawm tus resistor, tus resistor yuav ua kom sov thiab hloov hluav taws xob rau hauv hluav taws xob. Qhov tshwm sim no yog hu ua thermal effect ntawm tam sim no. Joule thiab Lenz los ntawm ntau qhov kev sim, pom tias cov cua sov tsim los ntawm qhov kev tawm tsam los ntawm qhov tam sim no yog proportional rau lub square ntawm tam sim no, tsis kam thiab energization lub sij hawm. Nov yog txoj cai Joule-Lenz.

Lub raj cua sov yog lub raj hlau uas muaj cov hlau tsis muaj zog, uas yog tib yam li lub tshuab hluav taws xob hluav taws xob. Lub hauv paus ntsiab lus cua sov yog tias tam sim no dhau los ntawm cov resistor generates cua sov. Nws muaj lub neej ntev kev pab cuam, siab electrothermal conversion efficiency, deb infrared tawg, kev noj qab haus huv thiab ib puag ncig tiv thaiv.

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