Common Defects Of Steel Forgings

By Author: Sharma Presses
Total Articles: 14
Comment this article

Steel forging defects get unnoticed several times. Several imperfections caused due to materials and forging processes create defects in the components.

As we know that defects are imperfections that exceed the predefined limits. So it won't be wrong if some minor imperfections are ignored as they remain within limits. The below-provided information is regarding common defects of steel forging processes in forging plants. The aim of this blog is to make readers aware of common defects and their effects on forging performances, further, you will also explore the ways to eradicate them.

Common Forging Defects

Unfilled sections

Some of the forging areas are left unfilled. It happens due to poor die design, poor forging technique, insufficient raw material and poor heating process.

We have observed that this imperfection can be fully removed by designing the die accurately, filling sufficient raw material and the right level of heating.

Cold Shut

Several times you must have found cracks on corners, it happens due to cold shut reasons. Die design, sharp corners and inappropriate ...
... chilling levels are the core reasons for this defect. By increasing the filet radius of the die, you can easily eradicate this defect.

Scale Pits

Forged surfaces need to be cleaned fully. Several times forging is done in an open environment, as a result, irregular deputations on the forging surface contribute to this flaw. You can also overcome this defect easily with little care. Proper cleaning of the forging area will help you in eradicating this defect fully.

Die Shift

During forging sometimes upper and lower die alignment disturbs. Misalignment affects the forging component with its dimensions.

You can rectify this defect by aligning the upper and lower die parts. As both notches match, the part will come out with the proper dimensions.

Flakes

Cooling of forged components is a crucial step of forging. If the forged component is cooled immediately, the final outcome develops cracks. Such components are weak and have visible flakes. However, you can easily overcome these defects by following the proper cooling process.

Uneven Grain Growth

Improper metal flow during casting is responsible for this flaw. This changes the predefined grain structure of the final product. Improper metal flow is again an effect of die design, which you can easily rectify by changing the design of the die.

Incomplete Forging Penetration

Incomplete forging, and light and rapid hammer blows can affect the forging penetration. Proper control over forging presses can remove this defect completely.

How We Can Help

SMT Parkash is a leading Servo Screw Press Manufacturer in India. We have a big blanking line and impact extrusion utility in NCR. This makes us a reliable impact extrusion manufacturer and supplier in India.

Author Bio:-
The company SHARMA MACHINE TOOLS was founded in 1971 by the late Sh. J.S. Sharma F/O Sh. Prakash Sharma who was the first person to design and create the "DEEP DRAWING DOUBLE ACTION PRESSES" for the "FIRST TIME IN INDIA."