WelKuan: Products

All products are made of advanced-grade nickel permalloy PB (45-50%) and mu-metal PC (78-80%). Under the quality standard of ISO-9001, we accurately develop the progressive stamping die and manufacture laminations with computerized equipment. Following ultrasound cleaning procedure, the products will process heat treatment via hydrogen / nitrogen vacuum to achieve desired permeability and metal properties.

Permalloy	Thickness (mm)
PB (45-50% Ni)	0.15 / 0.2 / 0.35 / 0.5 / 0.6 / 0.75 / 1.0 / 1.5
PC (78-80% Ni, Mu-metal)	0.15 / 0.2 / 0.35 / 0.5

Professional Tooling Design

AutoCAD Drawing
CNC Equipment
2.5D Coordinate Measuring Instrument
Flexible Customization Solution

One-stop Manufacturing Process

Metal Slitting Equipment
Progressive Die Stamping
Ultrasonic Cleaning Process
Hydrogen/ Nitrogen Vacuum Furnace Treatment

Sensor Core / Stacking Core

The Sensor Core is mainly used to detect the variation of magnetic flux. The dimension could be customized per inquiry. We can manufacture single lamination or stack several laminations and rivet into one unit along with progressive die stamping. The process minimizes the space between each layer to achieve better magnetic permeability. Typical applications of the sensor core or stacking core are current clamp meter, hall effect sensor or any electronic components that detect variations of electric current or magnetic flux to trigger magnetic response.

EI CORE

The EI Core is mainly used as magnetic core of transformers dedicated to weak electric current. The excellent permeability of permalloy are perfect in an analog circuit where variations in electric current are weak and precise response is required. We can manufacture single lamination or stack laminations, wiring coils to form one unit. Typical applications of EI core are SMD transformers for laptops and telecom devices, telecom transformers, Hi-Fi stereo transformers, ISDN/pulse transformers and power transformers.

SPECIFICATION	(mm)
MODEL NAME	A	B	C	D	E	F	G	THICKNESS	NI GRADE
EDA-8	8.00	10.00	8.80	2.40	1.60	1.20	1.20	0.2/0.15	PC
ED-8	8.00	11.00	8.30	2.40	1.60	2.70	1.20	0.2/0.15	PC
EDX-8	8.00	13.50	10.85	2.40	1.60	2.65	1.20	0.2/0.15	PC
EDB-8	8.00	14.50	11.80	2.40	1.60	2.70	1.20	0.2/0.15	PC
EDC-8	8.0	16.00	13.30	2.38	1.61	2.70	1.20	0.2/0.15	PC
EL-12.6	12.60	17.00	13.00	3.70	2.60	4.00	1.85	0.2/0.15	PC
ES-12.7	12.70	11.00	9.50	3.18	3.175	1.50	1.585	0.2/0.15	PC
EL-12.7	12.70	12.50	11.00	3.18	3.175	1.50	1.585	0.2/0.15	PC
EL-14	14.00	10.50	8.75	3.50	3.50	1.75	1.75	0.2/0.35	PB/PC
EL-16	16.00	16.00	13.60	4.70	3.33	2.40	2.32	0.2/0.35	PB/PC
EL-16.8	16.80	13.50	10.50	4.95	3.025	3.00	2.90	0.2/0.35	PB/PC
EL-19	19.00	15.00	12.50	4.75	4.75	2.50	2.375	0.2/0.35	PB/PC
EL-20	20.00	20.00	17.00	6.00	4.00	3.00	3.00	0.2/0.35	PB/PC
EL-186	19.00	11.00	8.63	4.75	4.75	2.37	2.375	0.2/0.35	PB/PC
EL-187	19.04	15.90	13.50	4.75	4.76	2.40	2.38	0.2/0.35	PB/PC
EL-25	25.40	19.05	15.88	6.35	6.35	3.175	3.175	0.2/0.35	PB/PC

SPECIFICATION	(mm)
MODEL NAME	A	B	C	D	E	F	G	THICKNESS	NI GRADE
EI-14	14.00	8.75	7.00	3.50	3.50	1.75	1.75	0.2/0.35	PB/PC
EI-16	16.00	12.00	10.00	4.00	4.00	2.00	2.00	0.2/0.35	PB/PC
EI-19	19.00	12.50	10.00	4.75	4.75	2.50	2.375	0.2/0.35	PB/PC
EI-187	19.04	13.50	11.10	4.76	4.76	2.40	2.38	0.2/0.35	PB/PC
EI-24	24.00	15.00	12.00	6.00	6.00	3.00	3.00	0.35	PB/PC
EI-28	28.00	21.00	17.00	8.00	6.00	4.00	4.00	0.35	PB/PC
EI-35	34.92	23.81	19.05	9.52	7.94	4.76	4.76	0.2/0.35	PB/PC
EI-41	41.00	27.00	21.00	13.00	8.00	6.00	6.00	0.2/0.35	PB/PC

SPECIFICATION	(mm)
MODEL NAME	A	B	C	D	E	F	G	THICKNESS	NI GRADE
EES-16(N)	16.00	5.00	2.70	4.70	3.33	2.30	2.32	0.2/0.35	PB/PC
EES-16(O)	16.00	5.00	2.70	4.60	3.33	2.40	2.32	0.2/0.35	PB/PC
EEM-16	16.00	7.00	4.70	4.70	3.33	2.30	2.32	0.2/0.35	PB/PC
EEX-16	16.00	11.00	8.60	4.70	3.33	2.40	2.32	0.2/0.35	PB/PC
EE-22	22.00	11.25	8.25	6.00	5.00	3.00	3.00	0.2/0.35	PB/PC
EE-25A	25.40	12.69	9.52	6.35	6.35	3.17	3.175	0.2/0.35	PB/PC
EE-25B	25.40	6.35	3.175	6.35	6.35	3.175	3.175	0.2/0.35	PB/PC

SPECIFICATION	(mm)
MODEL NAME	A	B	C	D	E	F	G	H	GAP	THICKNESS	NI GRADE
EE-187GP	19.04	8.00	5.50	4.82	4.57	2.50	2.54	7.95	0.05	0.2/0.35	PB/PC
EE-21.4	21.40	11.30	8.15	6.30	4.40	3.15	3.15	11.22	0.08	0.2/0.35	PB/PC
EE-31.7	31.74	17.46	12.70	9.52	6.35	4.76	4.76	17.38	0.08	0.2/0.35	PB/PC

SPECIFICATION	(mm)
MODEL NAME	A	B	C	D	E	F	G	H	GAP	THICKNESS	NI GRADE	TYPE
EDA-8	8.00	10.00	8.80	2.40	1.60	1.20	1.20			0.2/0.15	PC	EL TYPE
ED-8	8.00	11.00	8.30	2.40	1.60	2.70	1.20			0.2/0.15	PC	EL TYPE
EDX-8	8.00	13.50	10.85	2.40	1.60	2.65	1.20			0.2/0.15	PC	EL TYPE
EDB-8	8.00	14.50	11.80	2.40	1.60	2.70	1.20			0.2/0.15	PC	EL TYPE
EDC-8	8.0	16.00	13.30	2.38	1.61	2.70	1.20			0.2/0.15	PC	EL TYPE
EL-12.6	12.60	17.00	13.00	3.70	2.60	4.00	1.85			0.2/0.15	PC	EL TYPE
ES-12.7	12.70	11.00	9.50	3.18	3.175	1.50	1.585			0.2/0.15	PC	EL TYPE
EL-12.7	12.70	12.50	11.00	3.18	3.175	1.50	1.585			0.2/0.15	PC	EL TYPE
EI-14	14.00	8.75	7.00	3.50	3.50	1.75	1.75			0.2/0.15	PC	EI TYPE
EL-14	14.00	10.50	8.75	3.50	3.50	1.75	1.75			0.2/0.35	PB/PC	EL TYPE
EI-16	16.00	12.00	10.00	4.00	4.00	2.00	2.00			0.2/0.35	PB/PC	EI TYPE
EL-16	16.00	16.00	13.60	4.70	3.33	2.40	2.32			0.2/0.35	PB/PC	EL TYPE
EES-16(N)	16.00	5.00	2.70	4.70	3.33	2.30	2.32			0.2/0.35	PB/PC	EE TYPE
EES-16(O)	16.00	5.00	2.70	4.70	3.33	2.30	2.32			0.2/0.35	PB/PC	EE TYPE
EEM-16	16.00	7.00	4.70	4.70	3.33	2.30	2.32			0.2/0.35	PB/PC	EE TYPE
EEX-16	16.00	11.00	8.60	4.70	3.33	2.40	2.32			0.2/0.35	PB/PC	EE TYPE
EL-16.8	16.80	13.50	10.50	4.95	3.025	3.00	2.90			0.2/0.35	PB/PC	EL TYPE
EI-19	19.00	12.50	10.00	4.75	4.75	2.50	2.375			0.2/0.35	PB/PC	EI TYPE
EL-19	19.00	15.00	12.50	4.75	4.75	2.50	2.375			0.2/0.35	PB/PC	EL TYPE
EL-20	20.00	20.00	17.00	6.00	4.00	3.00	3.00			0.2/0.35	PB/PC	EL TYPE
EL-186	19.00	11.00	8.63	4.75	4.75	2.37	2.375			0.2/0.35	PB/PC	EL TYPE
EI-187	19.04	13.50	11.10	4.76	4.76	2.40	2.38			0.2/0.35	PB/PC	EI TYPE
EL-187	19.04	15.90	13.50	4.75	4.76	2.40	2.38			0.2/0.35	PB/PC	EL TYPE
EE-187GP	19.04	8.00	5.50	4.82	4.57	2.50	2.54	7.95	0.05	0.2/0.35	PB/PC	EE TYPE (GAP)
EE-21.4	21.40	11.30	8.15	6.30	4.40	3.15	3.15	11.22	0.08	0.2/0.35	PB/PC	EE TYPE (GAP)
EE-22	22.00	11.25	8.25	6.00	5.00	3.00	3.00			0.2/0.35	PB/PC	EE TYPE
EI-24	24.00	15.00	12.00	6.00	6.00	3.00	3.00			0.2/0.35	PB/PC	EI TYPE
EE-25A	25.40	12.69	9.52	6.35	6.35	3.17	3.175			0.2/0.35	PB/PC	EE TYPE
EE-25B	25.40	6.35	3.175	6.35	6.35	3.175	3.175			0.2/0.35	PB/PC	EE TYPE
EL-25	25.40	19.05	15.88	6.35	6.35	3.175	3.175			0.2/0.35	PB/PC	EL TYPE
EE-31.7	31.74	17.46	12.70	9.52	6.35	4.76	4.76	17.38	0.08	0.2/0.35	PB/PC	EE TYPE (GAP)
EI-35S	34.92	23.81	19.05	9.52	7.94	4.76	4.76			0.2/0.35	PB/PC	EI TYPE
EI-41	41.00	27.00	21.00	13.00	8.00	6.00	6.00			0.2/0.35	PB/PC	EI TYPE

Ring Core

The Ring Core is a closed ring-shaped magnetic lamination. We can manufacture single lamination or stack laminations, wiring coils to form one unit. Typical applications of ring core are zero phase current transformer, arc-fault circuit interrupter (AFCI), ground fault circuit interrupter (GFCI) and earth leakage circuit breaker (FLCB).

SPECIFICATION	(mm)
MODEL NAME	A	B	THICKNESS	NI GRADE
WK-12	12.20	8.80	0.35	PC
WK-13	13.50	9.80	0.35	PC
WK-15	15.00	11.00	0.35	PC
WK-17	17.50	13.00	0.35	PC
WK-33	33.20	21.00	0.35	PC
WK-42	42.00	34.00	0.35	PC
WK-53	53.00	46.00	0.35	PC

The clock movement stator is the key component of stepping motor in a clock. We have more than 30 years of experience in tool design. Customized solution is available per inquiry.

Customized solution for metal component is available. We are specialized in tool design in die cutting, bending, drawing and milling.

Shield Case and Meter Case

The shield case is used in automotive device or precision instrument to reduce electromagnetic interference by providing low frequency magnetic field attenuation with low coercive forces.

Products

Permalloy Components

/ Measuring Instruments

Our Products

Materials

Our Services

Professional Tooling Design

One-stop Manufacturing Process

Sensor Core / Stacking Core

EI CORE

Ring Core

Clock Component

The clock movement stator is the key component of stepping motor in a clock. We have more than 30 years of experience in tool design. Customized solution is available per inquiry.

Customized solution for metal component is available. We are specialized in tool design in die cutting, bending, drawing and milling.

Shield Case and Meter Case

The shield case is used in automotive device or precision instrument to reduce electromagnetic interference by providing low frequency magnetic field attenuation with low coercive forces.