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% |
