GL-D32 Steel Plate

 

 

 

 

During the manual arc welding process, the following situations may occur when the welding current is too low:

 

I. Weld Formation

 

Narrower Weld Width: A low welding current means relatively insufficient arc energy, which reduces the amount of molten weld metal. As a result, during the welding process, the spreading range of the weld metal to both sides becomes smaller, leading to a significantly narrower weld width. For example, the weld width may reach 10 - 12mm under a normal welding current, but when the current is too low, it may decrease to around 6 - 8mm.

 

Reduced Weld Reinforcement: Due to the decreased amount of molten filler metal, after the weld cools and solidifies, the weld reinforcement will be lower than normal. Under normal circumstances, the weld reinforcement may be 2 - 3mm, but when the current is too low, it may only be 1 - 1.5mm or even lower. This will affect the strengthening effect of the weld and reduce the ability of the weld to resist external forces.

 

 

 

II. Welding Quality

 

Increased Lack - of - Fusion Defects: A too - low current will prevent the base metal and filler metal from melting sufficiently, easily resulting in lack - of - fusion defects. This is especially obvious when welding multi - pass and multi - layer welds or thick - plate welding. For example, during thick - plate butt welding, due to the low current, the root may not be fully penetrated, and non - fused areas may appear at the root of the weld or between layers, which will seriously affect the strength and integrity of the weld.

 

Increased Slag Inclusion: A low welding current reduces the fluidity of the molten pool, and the slag is not easy to float out of the molten pool. After the weld solidifies, the slag will remain in the weld, forming slag inclusions. Slag inclusions will reduce the effective bearing area of the weld, and the material properties at the slag inclusion are different from those of the normal weld metal, easily causing stress concentration and reducing the strength and toughness of the weld.

 

 

 

 

 

Steel Grade for shipbuilding and offshore platform:
GL - A , GL - B , GL - D , GL - E
GL - A32, GL - A36, GL - A40, GL - D32, GL - D36, GL - D40, GL - E32 ,GL - E36 ,GL - E40 GL - F32, GL - F36 ,GL - F40

GL Grade A, GL Grade B,GL Grade D, GL Grade E, GL Grade AH32, GL Grade AH36, GL Grade AH40,GL Grade DH32,GL Grade DH36,GL Grade DH40,GL Grade EH32,GL Grade EH36, GL Grade EH40,GL Grade FH32,GL Grade FH36,GL Grade FH40

 

III. Welding Efficiency

 

Slower Welding Speed: To ensure the quality of the weld, when the current is too low, it is necessary to appropriately reduce the welding speed to increase the heating time of the arc on the welded parts so that the base metal and filler metal can be fully melted. As a result, the time required to weld the same - length weld will increase, leading to a reduction in welding efficiency. For example, the welding speed can reach 10 - 12cm/min under a normal current, but when the current is too low, the welding speed may drop to around 6 - 8cm/min.

 

 

 

 

 

Why Choose Us?
We take pride in our ability to provide custom solutions for our customers' unique needs.
We analyze and compare the previous products and the current technical situation of our GL-D32 Steel Plate, and develop new technical specifications and processes.
Our customers trust us to deliver high-quality Cold-rolled Steel products on time and on budget.
We strictly implement the warm and thoughtful after-sales service, adhere to the development of good professional ethics.
We offer a wide range of Cold-rolled Steel products to meet diverse customer needs.
We adhere to the customer-centric and brand-oriented business philosophy, and continue to provide customers with reliable and excellent products and services.
Our factory is committed to upholding the highest standards of safety and quality.
All staff of our company and all departments work together to combine business management, professional technology, quantitative statistical methods and ideological education.
Our Cold-rolled Steel products are known for their durability and reliability.
Relying on the superior conditions and strong advantages of mass production, we are able to meet the different needs of our customers.

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