Aloyi 20 Chitsulo chosapanga dzimbiri

Alloy 20 (UNS N08020) ndi austenitic, nickel-iron-chromium based super alloy yokhala ndi zowonjezera za Copper ndi Molybdenum zomwe zimapereka kukana madera ankhanza, pitting, ndi dzimbiri. Imakhazikikanso ndi Columbium kuti achepetse mvula ya carbide panthawi yowotcherera. Aloyi 20 ikuwoneka kuti ikugwera pakati pa magulu onse osapanga dzimbiri ndi faifi tambala popeza ili ndi mawonekedwe a onse awiri. Linapangidwa kuti lizitha kukana kwambiri kuukira kwa asidi ndikuwonetsa kukana kwamphamvu kupsinjika-kusweka kwa dzimbiri pakutentha kwa 20% mpaka 40% sulfuric acid, komanso kumakhala ndi kukana kwa dzimbiri kwa sulfuric acid ndi kupsinjika kwa kloride kusweka kwa dzimbiri. Alloy 20 ili ndi makina abwino pamatenthedwe ozungulira komanso okwera, mpaka pafupifupi 930 ° F (500 ° C) ndipo amapangidwa mosavuta ndi njira zanthawi zonse zamafakitale.

Zofotokozera

	Standard	Aloyi 20
1	UNS	N08020
2	Werkstoff Nr.	2.4660

Chemical Properties:

TYPE	C	Cr	Ku	Fe	Mn	Mo	Ndi	P	Si	S	Nb (Cb)
Aloyi 20 UNS N08020	0.07 max	mphindi: 19.00 kukula: 21.00	mphindi: 3.00 kukula: 4.00	Kusamala	2.00 max	mphindi: 2.00 kukula: 3.00	mphindi: 32.00 kukula: 38.00	0.045 max	1.00 max	0.035 max	8 XC mphindi 1.00 max

Katundu Wamakina:

Chikhalidwe Chokhazikika
Fomu Yogulitsa	Tensile Mphamvu, ksi (min)	Zotuluka Mphamvu, 0.2% kuchepetsa ksi (min)	Elongation % (min)	Kuchepetsa Malo % (mphindi)	Kuuma Brinell (max)	Kuuma Rockwell B (max)
Plate, Mapepala	80	35	30	-	217	95
Malo	80	35	30	50	-	-

Kuchulukana	8.1 g/cm3
Melting Point	1443 °C (2430 °F)

Mawonekedwe

• Kuchuluka kwa dzimbiri, pitting ndi kukana ming'alu
• Lili ndi Niobium yokhazikika motsutsana ndi kukhudzidwa komanso kupangika kwa intergranular corrosion
• Wabwino makina katundu ndi fabricability
• Kutsika kochepa kwa carbide panthawi yowotcherera

Mapulogalamu
Chifukwa cha kukana kwambiri kwa dzimbiri, Aloyi 20 imagwiritsidwa ntchito popanga mankhwala, kupanga chakudya, mankhwala, kupanga magetsi ndi mapulasitiki. Mavavu, mapampu ndi makina okakamiza ndi zina mwazinthu zodziwika bwino zomwe Aloyi 20 imagwiritsidwa ntchito.