Thaum xaiv qhov zaus ntawm cov khoom siv cua sov induction, nws puas tsim nyog los xam?

When selecting the frequency of induction cua sov khoom , puas tsim nyog xam?

Qhov kev xaiv ntawm qhov zaus tam sim no yog xaiv qhov ntau zaus, uas yog, xaiv cov zaus band, tsis yog xaiv tus nqi ntawm qee zaus, nws tsis muaj nuj nqis. Nws yuav tsum tau hais tias 8kHz thiab 10kHz yog qhov pib zoo ib yam; 25kHz thiab 3kHz kuj tseem siv tau ntau yam; tab sis 8kHz thiab 30kHz, 30kHz thiab 250kHz tsis tuaj yeem siv ua ke, vim tias lawv tsis nyob hauv tib zaus band, muaj qhov kev txiav txim ntawm qhov sib txawv.

Cov khoom siv hluav taws xob ntau zaus thiab nruab nrab ntawm cov khoom siv hluav taws xob tau ntsuas cov zaus hauv txhua lub teb chaws. Raws li qhov yuav tsum tau muaj ntawm txoj kab uas hla ntawm qhov sib txawv thiab qhov tob ntawm txheej hardened, qhov tsim nyog zaus tuaj yeem raug xaiv raws li Table 2-1 thiab Table 2.2.

Table 2-1 Hardened txheej tob ntawm tus qauv zaus tus nqi

Zaus /kHz		250	70	35	8	2. Xyoo 5	1. Xyoo 0	0.5
Hardened txheej qhov tob / hli	Tus me tshaj	0. Xyoo 3	0. Xyoo 5	0. Xyoo 7	1. Xyoo 3	2.4	3.6	5. Xyoo 5
	nyiaj pab ntau tshaj	1.0	1.9	2.6	5. Xyoo 5	10	15	nees nkaum ob
	qib siab	0. Xyoo 5	1	1.3	2.7	5	8	11

① Ntawm 250kHz, vim yog cov cua kub ceev heev, cov ntaub ntawv tiag tiag tuaj yeem loj dua tus nqi hauv lub rooj.

Table 2-2 Xaiv cov zaus thaum lub sij hawm nto quenching ntawm cylindrical qhov chaw

zaus	Tso cai tsawg kawg nkaus txoj kab uas hla	Pom zoo txoj kab uas hla	zaus	Tso cai tsawg kawg nkaus txoj kab uas hla	Pom zoo txoj kab uas hla
/hli	/ hli	/ hli	/hli	/ hli	/ hli
1.0	55	160	35.0	9	26
2.5	35	100	70.0	6	18
8.0	19	55	250.0	3.5	10

Table 2-3 yog daim ntawv qhia kev xaiv zaus tam sim no thaum lub sij hawm induction hardening ntawm lub tuam txhab John Deere hauv Tebchaws Meskas. Txoj kab uas hla ntawm ib feem thiab qhov tob ntawm txheej hardened tau muab sib xyaw ua ke, thiab nws kuj tseem siv tau los ua ib daim ntawv qhia rau kev xaiv zaus tam sim no.

Table 2-3 Xaiv qhov zaus tam sim no ntawm induction hardened qhov chaw

Fais fab mov Induction hardened qhov chaw		qeb	Generator muaj zog lub xeev			High zaus generator
		Lub zog / kW	7 ~ 2000			5 -600
		Zaus /kHz	1	3	10	50 ~ 100	200-600 ib	1000
Txoj kab uas hla /hli	Hardened txheej qhov tob / hli
W12	0.2 yam tsawg kawg nkaus 0.7						A	A B
13 – 18	0 Yam tsawg kawg nkaus 2				B	B A	A A

Fais fab mov Induction hardened qhov chaw		Lwm chav kawm IJ	Mechanical generator solid-state fais fab mov			High zaus generator
		Lub zog / kW	7 – 2000			5-600
		Zaus /kHz	1	3	10	50 ~ 100	200-600	1000
19 ~ 59	2 tsawg kawg 4			A	A B
N60	3.5 yam tsawg kawg nkaus		A	B	C

Lus Cim: 1. Qhov tob ntawm txheej hardened nyob rau hauv lub rooj yog muab los ntawm kub dov nruab nrab carbon steel, thiab qhov tob ntawm hardened txheej yog ntsuas rau 45HRC.

2. Qhov tsawg kawg nkaus hardened txheej qhov tob nyob ntawm cov khoom siv ntawm cov cua sov lub sij hawm luv luv (pre-heat kho lub xeev), thiab qhov siab tshaj plaws hardened txheej qhov tob yog nyob ntawm hardenability ntawm cov khoom thiab cov degree ntawm overheating nto.

3. A sawv cev rau qhov zoo tshaj plaws zaus; B sawv cev rau qhov tsim nyog zaus; C sawv cev rau qhov tsawg zaus.