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MP electrical steel is a silicon steel commonly used in transformer cores and other electrical applications. The MP name comes from the fact that this type of steel contains a higher percentage of silicon than other types of electrical steel. This gives MP electrical steel a number of advantages over other types of steel, including improved electrical and magnetic properties.

What type of electrical steel is M117-30P steel?

M117-30P steel is a kind of cold-rolled oriented electrical steel, and cold-rolled oriented electrical steel is divided into ordinary oriented electrical steel, high magnetic induction oriented electrical steel and magnetic casting refined high magnetic induction electrical steel. M117-30P steel can be subdivided into high magnetic induction oriented electrical steel. High magnetic induction oriented electrical steel was invented by Nippon Steel in 1968. This technology is based on AIN and MnS as an auxiliary inhibitor, combined with a cold rolling method to produce it.

What are the chemical compositions of M117-30P steel?

Carbon, silicon, manganese, sulfur, and phosphorus are added to ordinary oriented electrical steel, while M117-30P steel, as a high magnetic induction oriented electrical steel, is different from it in that it also adds aluminum and nitrogen. .

The specific chemical composition of M117-30P steel is as follows:

Carbon C: 0.04-0.08

Silicon Si: 2.80-3.40

Manganese Mn:0.06-0.12

Sulfur S: 0.020-0.030

Phosphorus P:≦0.010

Aluminum AL: 0.02-0.03

Nitrogen N: 0.006-0.009

What are the mechanical properties of M117-30P steel?

Tensile strength: 347-431MPa

Elongation: 8%

Number of bends: 15

Redundancy factor: 98%

What is the hardness of M117-30P steel?

The Vickers hardness of M117-30P steel is 179HV5

What is the iron loss value of M117-30P steel?

The maximum iron loss value of M117-30P steel is 1.17W/kg

What is the magnetic inductance of M117-30P steel?

The minimum magnetic induction of M117-30P steel is 1.89B.

How about the punching property of M117-30P steel?

The punching performance of M117-30P steel is good, and the punching and shearing workload of users is very large when using electrical steel sheets, so the electrical steel sheets are required to have good punching properties, which is especially important for micro and small motors. Good punching performance can improve the life of the die and scissors, ensure the precise size of the punching and cutting pieces and reduce the burrs of the punching and cutting pieces.

What are the factors affecting the performance of M117-30P steel sheet?

1) Die or scissors material. For example, the stamping performance of cemented carbide dies is more than double that of tool steel dies.

2) 2) The distance between the punch and the die. The appropriate spacing is generally 5% to 6% of the thickness of the steel plate.

3) 3) Types of lubricating oil for punching.

4) 4) Punching shape.

5) 5) The type and quality of the insulating film on the surface of the steel plate.

6) 6) Hardness of the steel plate, etc.

These are key factors that can affect film performance

How is the surface quality of M117-30P steel?

The surface of M117-30P steel plate is smooth, flat and uniform in thickness

How is the insulating film of M117-30P steel?

In order to prevent the short circuit between the iron core laminations and increase the eddy current loss, the surface of the cold-rolled electrical steel sheet is coated with a thin layer of semi-organic insulating film of inorganic salt or inorganic salt + organic salt. The insulating film property of M117-30P steel has the following characteristics:

1) Good heat resistance. It will not be damaged during stress relief annealing at 750~800°C.

2) The insulating film is thin and uniform.

3) 3) The interlayer resistance is high.

4) 4) Good adhesion.

5) Good corrosion resistance and rust resistance.

6) 7) Good weldability.

What is the production process of M117-30P steel?

There are currently three production methods for M117-30P steel (Table 2)8], the first is the most widely used Nippon Steel method, which is different from ordinary grain-oriented electrical steels in that: (1) AlN is the main method and MnS is the radiation-assisted suppression method. (2) One cold rolling under high pressure. The characteristics of the second method represented by Kawasaki are: (1) adding Sb or Mo and MnSe or MnS as inhibitors; (2) using the second cold rolling method, but the reduction rate of the second cold rolling is 70%, while 50% of non-ordinary grain-oriented electrical steel. The third method is represented by the United States, which uses B, N together with MnSe or MnS as inhibitors.See the table below for details:

process

Method 1

Method 2

Method 3

Steelmaking: Microalloying

AIN+MnS

MnSe+Sb,Mo

B+N+S or Se

Hot rolling: heating temperature/℃

1360

1320

1250

Normalization/℃

1100

900

875-1025

Cold rolling/%

87

60-70

80

Intermediate annealing/℃

–

800-1000

–

Cold rolling/%

–

60-70

–

800-850℃

Decarburization annealing

dryH2+N2

dryH2+N2

dryH2+N2

1200℃

Box annealing

wetH2

wetH2

wetH2

What are the benefits of using M117-30P steel？

M117-30P steel is a high quality, reusable material that offers many advantages over traditional electrical steels. It is more durable and has a higher resistance to corrosion, making it ideal for use in harsh environments. Additionally, M117-30P steel has excellent electromagnetic properties, making it an excellent choice for a variety of applications.

What are the advantages of M117-30P steel?

M117-30P electrical steel is a premium product that has many advantages over other types of electrical steel. It has a higher resistivity, which means it can handle more current without overheating. It also has a low coercive force, which makes it less likely to lose its magnetism over time. In addition, M117-30P electrical steel is less prone to corrosion and easier to machine than other types of electrical steel.

What are the applications of M117-30P steel?

M117-30P steel is a ferrosilicon alloy with high magnetic permeability. This material is used in transformer cores and other electromagnetic equipment.

M117-30P steel has excellent electromagnetic properties and is ideal for transformer applications. The material has low iron losses, which help improve the efficiency of the transformer. Additionally, M117-30P steel has a high saturation flux density, which means it can carry large amounts of current without saturating. This feature is beneficial in applications where large currents are present, such as power transformers.