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What is a cupping testing machine?

2025-11-26 18:28:35 mechanical

What is a cupping testing machine?

The cupping tester is a professional equipment used to test the forming performance of metal sheets. It is mainly used to evaluate the ductility and fracture resistance of metal materials during the stamping process. It is widely used in automobile manufacturing, aerospace, home appliance production and other fields, and is one of the important tools for testing the mechanical properties of materials.

Working principle of cupping testing machine

What is a cupping testing machine?

The cupping testing machine measures the forming limit of a metal sheet by simulating its deformation behavior during the stamping process. During the test, the metal plate is fixed on the mold, and pressure is applied through the punch to gradually deform the plate until it breaks. By recording the punching depth and deformation at breakage, the formability of the material can be evaluated.

Application fields of cupping testing machine

Cupping testing machines have important applications in the following fields:

IndustryApplication scenarios
automobile manufacturingTesting the formability of body panels
AerospaceEvaluating the ductility of aerospace materials
Home appliance productionTesting the stamping properties of housing materials
Scientific research institutionsStudy the mechanical properties of new materials

Main parameters of cupping testing machine

The performance of a cupping testing machine is usually determined by the following parameters:

Parameter nameDescriptionTypical value
Maximum test forceThe maximum pressure the device can exert50-200kN
punch strokeMaximum moving distance of punch0-100mm
Test speedpunch moving speed1-500mm/min
Sample sizeTestable board sizes70×70mm to 200×200mm

Test standards for cupping testing machines

The cupping test follows a number of international and national standards to ensure the reliability and comparability of test results:

Standard numberStandard name
ISO 20482Metallic materials—Plate and strip—Cupping test method
GB/T 4156Erikson Cupping Test for Metallic Materials Sheets and Strips
ASTM E643Standard method for cupping test of sheet metal

Key points for purchasing a cupping testing machine

You need to consider the following factors when purchasing a cupping testing machine:

1.Testing requirements: Select the appropriate model according to the type and thickness range of the material to be tested.

2.Accuracy requirements: High-precision applications require equipment equipped with high-resolution sensors.

3.degree of automation: Automatic sample delivery and data collection functions can improve testing efficiency.

4.After-sales service: Choose a supplier that provides comprehensive technical support and accessories supply.

Cupping testing machine maintenance

In order to ensure the long-term stable operation of the cupping testing machine, the following maintenance work needs to be performed regularly:

maintenance itemscycleOperation content
Lubrication and maintenancemonthlyLubricate all moving parts
Sensor calibrationquarterlyCalibrating force sensors and displacement sensors
Electrical inspectionevery six monthsCheck electrical connections and insulation
Comprehensive overhaulevery yearComprehensive inspection by professional technicians

Development Trend of Cupping Test Technology

With the advancement of materials science and increasing industrial needs, cupping test technology is developing in the following directions:

1.Intelligent: Integrated AI algorithm to achieve automatic defect identification and result analysis.

2.High precision: Adopt higher precision sensors and control systems.

3.Multifunctional: One device integrates multiple material testing functions.

4.Digitization: Test data cloud storage and analysis.

As a key equipment for testing material formability, the cupping testing machine’s technological progress will effectively promote the development of materials science and manufacturing.

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