High Temp Alloys

 

Cov khoom tseem ceeb ntawm hlau-chromium-aluminium high-resistance electrothermal alloys
Properties \ Qib		1Cr13Al4	0Cr25Al5	0Cr21Al6	0Cr23Al5	0Cr21Al4	0Cr21Al6Nb	0Cr27Al7Mo2
Lub ntsiab chemical Cheebtsam (%)	Cr	12.0-15.0	23.0-26.0	19.0-22.0	22.5-24.5	18.0-21.0	21.0-23.0	26.5-27.8
	Al	4.0-6.0	4.5-6.5	5.0-7.0	4.2-5.0	3.0-4.2	5.0-7.0	6.0-7.0
	Re	Tus nqi tsim nyog	Tus nqi tsim nyog	Tus nqi tsim nyog	Tus nqi tsim nyog	Tus nqi tsim nyog	Tus nqi tsim nyog	Tus nqi tsim nyog
	Fe	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.	Bal.
							Nb 0.5	Mo1.8-2.2
Kev khiav hauj lwm kub (degree)		950	1250	1250	1250	1100	1350	1400
Chav ntsuas kub tsis kam (Ω·mm2·m)		1.25 ±0.08	1.42 ±0.06	1.42 ±0.07	1.35 ±0.07	1.23 ±0.07	1.45 ±0.07	1.53 ±0.07
Qhov ceev (g / cm3)		7.4	7.1	7.16	7.25	7.35	7.1	7.1
Thermal conductivity (KJ / m·h· degree)		52.7	46.1	63.2	60.2	46.9	46.1	45.2
Coefficient ntawm linear expansion ( × 10-6 degree)		15.4	16	14.7	15	13.5	16	16
Melting point (degree)		1450	1500	1500	1500	1500	1510	1520
Tensile zog (N / mm2)		580-680	630-780	630-780	630-780	600-700	650-800	680-830
Elongation (%)		>16	>12	>12	>12	>12	>12	>10
Nqe lus shrinkage (%)		65-75	60-75	65-75	65-75	65-75	65-75	65-75
Tus naj npawb ntawm rov khoov y(F/R)		>5	>5	>5	>5	>5	>5	>5
Hardness (HB)		200-260	200-260	200-260	200-260	200-260	200-260	200-260
Cov sijhawm ua haujlwm tas mus li		-	Ntau dua lossis sib npaug li 80/1300	Ntau dua lossis sib npaug li 80/1300	Ntau dua lossis sib npaug li 80/1300	Ntau dua lossis sib npaug li 80/1250	Ntau dua lossis sib npaug li 50/1350	Ntau dua lossis sib npaug li 50/1350
Microstructure		Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Sib nqus los tsis		Yog lawm	Yog lawm	Yog lawm	Yog lawm	Yog lawm	Yog lawm	Yog lawm

 

 

①High siv kub, xws li HRE (OCr24Al6Re) Fe-Cr-Al alloy hlau nyob rau hauv cov huab cua ntawm qhov siab tshaj plaws siv kub yuav ncav cuag 1400 degree;
② Lub neej ua haujlwm ntev;
③ Siab tso cai rau saum npoo;
④ Zoo oxidation tsis kam, AI2O3 zaj duab xis tsim tom qab oxidation muaj tshuaj tiv thaiv zoo thiab siab tiv taus;
⑤ Kev nqus tshwj xeeb yog tsawg dua Ni-Cr alloy;
⑥ Siab resistivity;
⑦ Zoo sulfur tsis kam;
⑧ Tus nqi qis dua li ntawm nickel-chromium alloy;
⑨ Qhov tsis zoo yog tias qhov kub nce, qhov kev ua tau zoo yog cov yas, thiab lub zog yog qhov kub thiab txias;

 

 

1, Kev siv

(1) Nws yog txwv tsis pub siv rau lub sijhawm ntev tshaj qhov kub thiab txias;

(2) Thaum lub qhov cub kub yog 400 degree, tsis pub kom txias sai;

(3) Tsis txhob kov lub cub hluav taws xob hluav taws xob thaum lub sij hawm them thiab tawm;

(4) Thaum lub cub tawg ua haujlwm, feem ntau ua tib zoo saib seb lub teeb liab thiab ntsuab ntawm lub vaj huam sib luag yog qhov qub, thiab lub teeb liab thiab ntsuab yuav tsum tau pauv ib zaug tom qab lub sijhawm, kom tsis txhob hlawv hluav taws xob. hlau vim tsis ua hauj lwm ntawm kev tswj kev hloov;

(5) Ua tib zoo saib xyuas qhov ua haujlwm ntawm lub ntsuas ntsuas txhua lub sijhawm, thiab tshuaj xyuas thiab cuam tshuam nrog lub sijhawm thaum lub cub tawg kub thiab qhov ntsuas ntsuas qhov txawv txav;

(6) Rau cov cub tawg uas muaj peev xwm ntau dua 100KW, txhua qhov cua sov yuav tsum zoo dua nruab nrog lub ntsuas ntsuas ntsuas, thiab lub ntsuas hluav taws xob yuav tsum tau teeb tsa hauv txhua theem ntawm peb lub thawv hluav taws xob kub kub.

 

2, Kev tu

(1) Tom qab peb mus rau plaub lub hlis ntawm kev siv, qhov saum npoo ntawm hluav taws xob hluav taws xob hlau yuav tsum tau khaws cia;

(2) Ua tib zoo saib xyuas qhov zoo thiab qhov tsis zoo ntawm cov hluav taws xob hluav taws xob hluav taws xob, thiab hloov cov electrodes zoo thiab tsis zoo ib zaug txhua peb mus rau plaub lub hlis;

(3) Thaum disassembled lub davhlau ya nyob twg ncej, yuav tsum tau saib xyuas kom tsis txhob ntaus thiab khob tus pas nrig tawm;

(4) Cov bolts uas ua rau lub davhlau ya nyob twg clamps yog qhov yooj yim rau oxidation loosening thiab yuav tsum tau kuaj xyuas thiab nruj tsis tu ncua.

 

 

 

 

 

 

 

Cim npe nrov: Tuam Tshoj high-temperature alloys manufacturers, lwm tus neeg, Hoobkas