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Electroslag casting technology of green casting technology
Release date:2015-02-09 Clicks:331 Article author:
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Electroslag casting technology of green casting technology is advanced technology in steel refining and casting forming and development. 

Electroslag casting has the following advantages:


A. internal organization

1 electroslag casting with pure, compact structure, uniform composition, can reach the same level of forging materials;

2 non metallic inclusions reduced by more than 1/2, at the same time, fine and uniform distribution of inclusion;

3 sulfur is reduced by more than 1/2;

 

The mechanical properties of B.

1 Mechanical Properties of isotropic, lamellar tearing resistance;

2 the impact toughness increased significantly;

3 the fracture toughness of KIC increased significantly;

4 improve the material fatigue performance;

5 the density of the material increased significantly, greatly improve the anti cavitation resistance, sand wear ability, improve the blade life and safety;

 

C. material utilization and production cost

1 electroslag casting can purify the blank, cutting, improve the utilization rate of metal;

2 electroslag casting can simplify the process, reduce production cycle, reduce production costs;

 

D. nondestructive testing

1 ultrasonic inspection can meet the requirements of the European standard and the United States at all levels of CCH703 Foundry Association standard ASTM A609.

 

Comparison of sand casting slag casting forging process of electricity

 

Sand casting

Sand casting

Electroslag casting ESC

Electro slag casting

forging

Forging

Process

Process

simple

Easy

commonly

Common

complex

Complex

Blank size accuracy

Rough accuracy

Close to the final product

Close to final product

Close to the final product

Close to final product

The thick blank

Big rough

The purity of the metal

Metal purity

Can not improve the purity

Can not rise purity

Greatly improve the purity

Can rise purity sharply

Can not improve the purity

Can not rise purity

Two pollution

Secondary pollution

The pouring process of the two pollution

In the pouring process

No two pollution

Non

No two pollution

Non

Shrinkage

Shrinkage microshinkage

There

Have

nothing

Non

nothing

Non

 

 

Non metallic inclusions

Non-metallic inclusion

unchanged

No change

Reduction of 1/2 ~ 2/3

Fall1/2 ~ 2/3

unchanged

No change

Composition uniformity

Elements uniformity

Not even

Not uniform

uniformity

Uniform

Not even

Uniform

density

Density

reduce

Fall

increase

Rise

Slightly improved

Rise a little

The utilization rate of materials

Material utilization

From 40% to 60%

From 70% to 80%

From 20% to 40%

production cycle

Production cycle

commonly

Common

Short

Short

Long

Long

The rejection rate

Eject ratio

From 10% to 30%

From 5% to 15%

From 20 to 50%

 
conclusion
1 with sand casting compared to molten metal purification;
  
2 compared with forging, electroslag casting can reach the same level of forging materials;
 
3 electroslag casting is an important method of sand casting and forging process instead of.
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