What is the main purpose of performing a cupping test on metals?

What is the main purpose of performing a cupping test on metals?

What is the main purpose of performing a cupping test on metals?

The cupping test is performed to determine a metal's ability to deform under stretching forces. It is widely used in the metal manufacturing and paint industries and can be performed on sheets with thicknesses. Thus, you ca easily perform the cupping test on metals with the help of the Presto cupping tester. This is one of the amazing lab testing instruments designed to determine the drawability of sheet metal components with ease. Here in this blog, we are going to provide you with information about this ductility tester, and how this lab testing instrument will easily be helpful in testing the ductility of metals with ease.

Introduction about cupping tester

The Erichsen cupping test is a ductility test, which is employed to evaluate the ability of metallic sheets and strips to undergo plastic deformation in stretch forming. This test consists of forming an indentation by pressing a punch with a spherical end against a test piece clamped between a blank holder and a die until a crack appears.
The depth of the cup is measured. The Erichsen Cupping Machine is used to check the draw ability of sheet metal components and is manufactured strictly in compliance with different like IS: 10175 (Part I): 1993, ISO 8490:1986, the machine has a standard ball that is made to penetrate through a clamped sample sheet up to 2 mm thickness.

The main purpose of using a cupping tester

The Erichsen deep-drawing test is used to determine the deep-drawing capability of sheet metals in accordance with (DIN EN 10139 and DIN EN 10130), which have a thickness of 0.1 mm to 2 mm and a width of 90 mm or more. Deep drawing (stretch forming) is the name given to the deformation process of sheet metal under biaxial stress.
The sheet is deformed with a rigid tool. The sheet to be tested is clamped between the sheet holder and the die and formed with a hardened ball punch. This process is continued at a specified speed until a fine, continuous crack appears in the sheet. The distance traveled by the ball punch to the crack is referred to as the indentation value "IE" (in mm) and represents an important quality feature of the tested sheet metal. Thus, you can easily test the ductility of metals with the help of this lab testing instrument.

Features of Presto cupping testing machine

The best quality of metal products is essential for the manufacturers. In order to ensure that, they need to perform certain types of tests on those products by using highly sophisticated and high-quality testing instruments. One of the essential tests is the cupping test on metals which is helpful in testing the drawability of metals with ease. Using Presto cupping testing machine, the manufacturers can measure the various properties of the metals. Below we have listed the features of the Presto cupping tester.
  • High-Quality rugged structure with the corrosion-resistant main body
  • Dial gauge to measure the cupping
  • Sturdy Construction and resilient
  • Revolving Handle for frictionless movement of the punch
  • Fast Guiding Mechanism with hand-operated wheel
  • Single-handed hassle-free operation with Spherical punch
  • Brass Housing for strong sample clamping
  • Highly accurate test results

Technical Specifications of Presto cupping tester

  • Range: 0 – 25mm
  • Least count/resolution: 0.01mm
  • Outside Body: Mild Steel (Duly Powder Coated.)
  • Dial Gauge – 1
  • Accuracy – ± 2%
  • Sample Thickness – Up to 1.8mm
  • Diameter of Punch – 20 ± 0.2 mm
With these features and technical specifications, it will be easy for you to determine the ductile strength of metals. You can also read about the significance of the cupping test, and how this lab testing equipment is helpful in testing the performance of products under different test conditions.
If you want to conduct a FREE sample testing session with the help of this lab testing equipment, then give us a call at +91 9210903903 or email us at info@prestogroup.com. Our team of technical experts will easily consult with you regarding your requirements.


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