Guide to Common Double Action Deep Drawing Press Errors and Fixes



The double-action deep drawing press plays a vital role in the metal industry. It enables the production of high-quality complex metal sheets. Having always worked in extreme climatic conditions and dealing with harsh metals, the double-action deep drawing press machine is prone to wear-tear and breakdown. The operators can often encounter several issues, which can affect the quality and efficiency of the output. In this post, we will list the common issues related to the metal sheet

Wrinkling of the Metal Sheet

Wrinkles are irregular waves in patterns on the surface of the metal sheet. It mostly appears on the flange area during the pressing/ drawing. It not only ruins the appearance but also weakens the structural integrity. Some of the possible causes can be:

• Uneven blank holder/ force
• Oversized metal plate
• Excessive material in the die cavity

Its fixes are:

• Uniform distribution in the workpiece holder pressure
• Better and controlled flow of material
• Optimize the blank size and shape
• Check for wear and misalignment in the blank holder system

Tearing/ Cracking of the Metal Sheet

You will see cracks or tearing on the surface of the metal, splits, especially around the punch radius or sidewalls. It could be due to poor lubrication. It could be due to: 

• High drawing speed

• Sharp tool radii
• Low ductility material
• Inadequate lubrication

You can fix it by:

• Reducing the punch speed and slowly applying the pressure
• Choose materials with better formability

Extra Thin Metal

The thin metals are weak, and they are more prone to wear and tear. They are most likely to fail during the operations. Some of the reasons behind this error could be:

• Sharp die entry radius
• Improper die clearance
• Excessive drawing force

You can check this issue by:

• Check the adjustment of the punch for precise shaping of the metals.
• Uniform flow of material on the die surface
• Slow down the formation speed to reduce the stress rate.
• Increase the radii to reduce the strain concentration

Dimensional Inaccuracy

It is an inaccuracy with the metal slightly springing back once the punch is withdrawn. It leads to a distorted or uneven shaping of the metal. It could be due to:

• Inadequate forming pressure 
• Robust quality material with high elastic modulus
• Improper tool geometry

This issue can be fixed by:

• Increasing the forming pressure to increase the metal’s elasticity limit
• Correct the tool geometry to avoid springing back
• The stimulation software can predict and correct the spring-back behaviour.

Surface Damage

Sometimes the texture sticks to the die or the punch surface, which makes the metal surface rough and uneven. It could be due to poor lubrication of the die, a rough or uncoated tooling surface. To get rid of this issue, follow these tips:

Use the manufacturer’s suggested high-quality lubricants designated for specific metalsmanufacturing machine. 

Always clean the hydraulic presses after use

Match the hardness of the tool according to the hardness of the metal

Final Words…

Using a double-action deep drawing press machine efficiently shapes the metals, but each output error is a sign of trouble. You should not ignore the scratched metal or extra-thin surface. The above-mentioned blog will help you understand why there is a problem with metal output. Also, you should invest in a high-quality double-action deep drawing machine from ‘Hari Engineering Works’, which allows greater control over and precision in the formation of intricate shapes. Our machinery is apt for a wide range of operations and is available at a competitive price.  So, what are you waiting for? Boost the quality of your operations with the best metal shaping machine.