Custom Order Alnico magnets Permanent High performance from China manufacturer

Custom Order Alnico magnets Permanent High performance

Price:	0.2~5.0 USD
Payment Terms:	T/T,L/C
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: alnico magnets

Production Capacity: 100 Metric Ton/Metric Tons ...

Delivery Date: 15-20 days

Application: Industrial Magnet

Grade: AlNico 5

Place of Origin: Zhejiang, China(Mainland)

Coating: No

Magnetization: Custom Request

Means of Transport: Ocean

Packing: According to customer's req...

Type: Permanent

Shape: Custom Request

Size: According to drawing

Export Area: All of the World

Cutting Tolerance: Custom Request

Alnico magnets, composed of primarily aluminum, nickel, and cobalt, which is the most established and widely used magnet materials.

Introduction

Alnicos are precipitation-hardened alloys requiring special heat treatment techniques. The raw materials are Cobalt, Nickel, Copper, Aluminum and Iron. Titanium, silicon, etc. are added in certain proportions. The raw materials in their purest form are melted in medium frequency induction furnaces and castings are made using conventional sand or shell moulds. The heat treatment consists of heating the alloy in furnace to well above its curie point, and holding it at that temperature for some time. This is followed by controlled cooling after which the castings are reheated and held for a long period at a temperature of about 600 degrees. This ageing process increases the coercive force and the energy product. Finally, the castings are ground to obtain close dimensional tolerances whenever necessary and inspected for physical and magnetic accuracy.

Joy Magnet range of manufacturing includes all the below grades of AlNiCo.

We also have the expertise in manufacturing of isotropic magnets. These types of magnets have the unique property of exhibiting Multiple Poles.

Cast Alnico Materials - Physical and Mechanical Properties (Nominal values)

Materials	Density g/cm3	Hardness Rockwell C	Curie Point ^oC	Coefficient of thermal expansion per ^oC x 10	Electrical Resistivity at 25 ^oC M.CM	Specific Heat Cal/gm^oC
Alni	6.9	51	760	12	65	0.11
Coalni	7.0	52	700	12	62	0.11
Alnico II	7.2	53	810	12	60	0.11
CoalnimaxSpl.	7.3	50	860	11.4	55	0.11
Coercimax	7.35	50	870	11.3	50	0.11
CoercimaxSpl.	7.35	50	870	11.3	50	0.11

Cast Alnico Materials - Magnetic Properties (Nominal values)

Materials	Remnance Br Gauss	Coercivity Hc Oersted	Maximum Energy Product (BH) max MGOe	Working Point BdHd G O	Average Recoil Permeability	Minimum Magnetising Force HsOersted	Reversible Temp Coefficient of Br % /^oC
ISOTROPIC
Alni	6200 - 6700	510 - 560	1.3 - 1.5	4000 350	4.3	3000	- 0.03
Coalni	6000 - 6500	580 - 630	1.3 - 1.5	4000 354	4.5	3000	- 0.03
Alnico II	6700 - 7500	600 - 670	1.5 - 1.8	4000 400	4.9	3000	- 0.03
ANISOTROPIC
CoalnimaxSpl.	12100 - 12900	615 - 665	5.0 - 5.8	10000 550	3.5	3000	- 0.02
Coercimax	11100 - 11900	690 - 730	4.3 - 5.1	8400 560	4.0	3000	- 0.02
CoercimaxSpl.	11700 - 12300	630 - 690	5.0 - 5.8	9800 550	3.7	3000	- 0.02

Excellent temperature stability, high residual induction, and relatively high energies characterize AlNiCo material. They can be manufactured in number of complex shapes such as horseshoes.