DH36 EH36 Steel Plate
Products Description In the field of industrial fabrication and construction, the cutting and welding processes of DH36 and EH36 steel plates are of critical significance. These techniques not only determine the efficiency and accuracy of the manufacturing operations but also have a direct...
Description
Products Description
|
Grade |
Yield |
Tensile |
Elongation |
Test |
V Ballistic Work |
|||||
|
Thickness mm |
||||||||||
|
≤50 |
>50~70 |
>70~100 |
||||||||
|
L |
T |
L |
T |
L |
T |
|||||
|
A |
≥235 |
400-520 |
≥22 |
20 |
|
|
34 |
24 |
41 |
27 |
|
B |
≥235 |
400-520 |
≥22 |
0 |
27 |
20 |
34 |
24 |
41 |
27 |
|
D |
≥235 |
400-520 |
≥22 |
-20 |
27 |
20 |
34 |
24 |
41 |
27 |
|
E |
≥235 |
400-520 |
≥22 |
-40 |
27 |
20 |
34 |
24 |
41 |
27 |
|
AH32 |
≥315 |
440-570 |
≥22 |
0 |
31 |
22 |
38 |
26 |
46 |
31 |
|
DH32 |
≥315 |
440-570 |
≥22 |
-20 |
31 |
22 |
38 |
26 |
46 |
31 |
|
EH32 |
≥315 |
440-570 |
≥22 |
-40 |
31 |
22 |
38 |
26 |
46 |
31 |
|
AH36 |
≥355 |
490-630 |
≥21 |
0 |
34 |
24 |
41 |
27 |
50 |
34 |
|
DH36 |
≥355 |
490-630 |
≥21 |
-20 |
34 |
24 |
41 |
27 |
50 |
34 |
|
EH36 |
≥355 |
490-630 |
≥21 |
-40 |
34 |
24 |
41 |
27 |
50 |
34 |
|
AH40 |
≥390 |
510-660 |
≥20 |
0 |
41 |
27 |
|
|
|
|
|
DH40 |
≥390 |
510-660 |
≥20 |
-20 |
41 |
27 |
|
|
|
|
|
EH40 |
≥390 |
510-660 |
≥20 |
-40 |
41 |
27 |
|
|
|
|
Gas metal arc welding (GMAW), also known as MIG welding, offers higher deposition rates and better control over the welding parameters, making it suitable for medium to thick plates. It provides a smooth weld bead and good penetration.
Submerged arc welding (SAW) is often used for thick plate welding due to its high productivity and deep penetration. The weld pool is shielded by a layer of flux, resulting in a clean and well-protected weld.
For critical applications, tungsten inert gas welding (TIG) is preferred for its ability to produce high-quality welds with excellent appearance and minimal spatter. However, it has a lower deposition rate and is more time-consuming.
Regardless of the chosen welding method, proper pre-weld preparation is essential. This includes cleaning the surfaces to remove oxides, oils, and contaminants, and ensuring proper joint design and fit-up. During welding, strict control of welding parameters such as current, voltage, travel speed, and electrode angle is necessary to achieve a sound weld with the desired mechanical properties.
Post-weld heat treatment may also be required to relieve residual stresses, improve the microstructure, and enhance the mechanical properties of the weld zone. Non-destructive testing methods such as ultrasonic testing, radiographic testing, and magnetic particle inspection are commonly employed to detect any internal or surface defects in the welds and ensure their integrity.
In conclusion, the cutting and welding techniques of DH36 and EH36 steel plates require a combination of technical expertise, proper equipment selection, and strict process control to achieve optimal results. By adhering to best practices and industry standards, manufacturers can produce high-quality structures and components that meet the demanding requirements of various industries.
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