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Torsion Testing Machine

Jinan Kason: Leading Professional Torsion Testing Machine Manufacturer and Supplier in China

We have specialized in developing and manufacturing metal, non-metal and composite material testing equipment for many years and have served customers from more than 150 countries and regions. As a professional testing equipment factory, our advantages are specifically reflected in

Complete Production Facilities

Our company has production and office facilities such as scientific research office building, electrical installation and commissioning building, final assembly workshop, heavy machine workshop, machining workshop, blanking workshop, painting workshop, measuring room, product showroom, etc.

Diverse Product Types

Our main products include hydraulic universal testing machines, electronic universal testing machines, compression testing machines, spring testing machines, impact testing machines, torsion testing machines, hardness testers, and testing machine accessories.

Rich Service Experience

Our products are exported to international markets such as Germany, the United States, Spain, Australia, Italy, South Africa, South Korea, Pakistan, Malaysia, Thailand, and Singapore. We have a professional pre-sale, sales and after-sales service team to provide strong technical support and professional services to domestic and foreign users.

Professional Qualification Certification

Our company has successfully passed ISO9001 quality system, ISO14000 environmental management system, occupational health and safety management system, and CE certification. The company has obtained a total of 22 authorized national patents, including 2 national invention patents, 13 national utility model patents, and 7 national design patents.

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Brief Introduction to Torsion Testing Machines

 

Orque testing machines measure torsional strength, stiffness and stress-strain properties of materials and products, making them an ideal solution for biomedical, automotive and aerospace applications. These testing machines are used to simulate real-life usage conditions and check the quality of drill bits and medical devices, screws and other fasteners, wires, and other products. Their configuration includes a test controller, easy-to-setup test software, test stand with rotary actuator or motor, power supply, torsional test fixture, and torque and angular position sensors. Some models offer extended test space or preload kits.

Key Components of Torsion Testing Machines

These torsion testing machines consist of the following key components:

300/600KN Steel Bar Bending Tester

Motor

The motor provides the torque required to twist the specimen. It can be hydraulic, electric, or pneumatic, depending on the specific machine.

Wire Reverse Bending Test Machine

Gripping System

This system securely holds the specimen in place and allows it to rotate freely without slipping. It ensures that force is applied uniformly along the length of the specimen.

High Stroke Electric Rockwell Hardness Tester

Load Cell

The load cell measures the torque applied to the specimen in real-time. It converts this torque into an electrical signal, which is then displayed on the machine's control panel.

Automatic Spring Torsion Testing Machine

Control Panel

The control panel enables operators to set the test parameters, such as the torque level, rotation speed, and test duration. It also displays the real-time torque values and provides data analysis functions.

 

 
Benefits of Torsion Testing Machines

Accurately Measure Shear Performance

Torsion testing machines can accurately measure shear stress and strain, which is critical to understanding the mechanical properties of materials. It helps in determining the shear modulus, ultimate shear strength and other relevant parameters of the material.

Material Behavior Assessment

By subjecting samples to torsional stress, torsion testing machines can provide insights into how materials behave under torsion or shear forces. It helps identify its elastic and plastic deformation properties, fatigue resistance and failure modes.

Quality Control and Assurance

Torsion testing machines play a vital role in ensuring the quality and reliability of materials used in the manufacturing process. It helps detect defects in the material's microstructure, such as voids, inclusions or inconsistencies, that could affect its performance. Torsion testing can also identify potential material defects or deviations from required specifications.

Design Optimization

Torsion testing machines provide valuable data for the design and optimization of various components and structures. By understanding how materials behave under torsional loads, engineers can select the appropriate materials and dimensions, thereby improving the overall performance and reliability of the final product.

 
Torsion Testing Machines Parameters (Take Manual Torsion Spring Testing Machine as an Example)

 

Model KS-N20 KS-N50 KS-N100
Max torque（N/m） 20 50 100
Test class 1 class
Torque test range(F·S) 1%~100%
Relative error of torque indication ±1%
Angle value accuracy (%) ≤±1
Angle display resolution(°) 0.1
Max torque angle 99999°
Sample size 0.1-200mm
Effective distance between chucks (mm) 200
Test rotating direction Two ways
Power 220V±10%,50Hz

 

Spring Compression and Tensile Testing Machine

Main Functions of Torsion Tester

In the field of materials testing, we use torsion testers to simulate this torsional motion and help manufacturers determine important material properties, including:

 

 

Maximum Torque

The maximum torque (torque) value that can be applied before the specimen fails. For example, once the maximum torque of a screw or bolt is found, a safety factor can be calculated and incorporated into the torque strength specification for that product.

Torsional Strength

The ultimate strength of the specimen, and the maximum torsional stress that the specimen can withstand when subjected to a torsional load before failure.

Torsional Shear Stress

Shear stress acting on the cross-section of a specimen due to torsional motion. Torsional loading produces a non-uniform stress distribution across the specimen cross-section, ranging from zero at the center to maximum torsional shear stress at the edges of the specimen.

Shear Elastic Modulus

Elastic shear stiffness is defined as the ratio of shear stress to shear strain. When comparing similar products, the higher the elastic modulus of the material, the greater the stiffness. The stiffer the structure, the greater the force required to cause deformation.

Sample Fracture Angle

The angle of rupture provides a measure of the ductility of a material when subjected to torque. For example, medical bone screws with larger break angles can provide surgeons with an earlier tactile warning that they have reached maximum torsional strength, according to ASTM F543-13.

Common Standards for Torsion Testing Machines

We offer a variety of transmission components

ASTM A938-18 - Standard Test Method for Wire Torsion Testing

The wire is twisted at a specified speed and the total number of turns broken is determined. If the number of turns is satisfactory, the sample is considered to have passed the test.

ASTM F543-13 - Standard Specification and Test Methods for Metallic Medical Bone Screws

This standard applies to metal bone screws implanted in bone. Test torsional strength to ensure the screw does not break during insertion or removal. Properties measured include torsional yield strength, maximum torque and fracture angle at standard conditions.

ISO 7800 - Metallic Materials - Wire - Simple Torsion Test

Used to determine the ability of wires with diameters or characteristic dimensions from 0.1 mm to 14 mm to undergo plastic deformation during simple twisting in one direction. The test is carried out until the specimen breaks or the specified number of turns is reached.

ISO 7206-8 - Surgical Implants - Partial and Total Hip Prostheses

Femoral components are tested in a ready-for-service condition and will not break during the specified number of cycles and test loads specified in the standard.

 

Factors Affecting Torsion Testing Machine Results and How to Minimize Errors

Several factors can affect the accuracy and reliability of torsion test results. Here are some common considerations for minimizing errors.

 

Manual Spring Compression and Extension Testing Machine

Sample Preparation

Ensure that the dimensions of the test sample are accurate and that there are no imperfections or imperfections that could affect its behavior under torsional stress.

Digital Display Spring Fatigue Testing Machine

Alignment

Correctly aligning the sample within the testing machine is critical to ensuring accurate results. Any misalignment introduces unnecessary stress concentrations and compromises data integrity.

Computerized Torsion Spring Tester

Calibration

Calibrate testing machines and measuring instruments regularly to ensure accurate torque and angle measurements. This will help minimize errors and ensure reliable test data.

Charpy Impact Tester

Test Speed

The rate at which torsional force is applied affects the behavior of the material. It is important to follow relevant testing standards or specifications to maintain consistency and comparability of results.

 
Applications of Torsion Testing Machine in Material Science and Engineering

 

Torsion testing machines play a vital role in materials science and engineering and have numerous advantages and applications.
 

 

 
Material Characterization

Torsional testing machine allows researchers and engineers to understand the mechanical properties of different materials, including metals, polymers and composites. It helps determine a material's torsional strength, ductility and elasticity, allowing for better material selection and design optimization for specific applications.

 
Component Design and Testing

Torsional stresses are common in many engineering applications, such as rotating shafts, gears, and springs. Torsional testing helps analyze the behavior and performance of these components under torsional forces, ensuring their structural integrity and reliability.

 
QC

Torsion testing machine is an important quality control measure to ensure that materials and components comply with specified standards and requirements. By performing torsion testing, manufacturers can identify any structural weaknesses or flaws in materials or components before they are used in actual applications.

 
Research and Development

Torsion testing provides valuable data to researchers and engineers working on the development of new materials and manufacturing processes. It helps evaluate the torsional behavior and performance of innovative materials and prototypes, thereby improving design and innovation.

 
Our Certifications

 

Our company has obtained the following certificates

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Factory Pictures

 

Below are photos of our factory for you to view

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Frequently Asked Questions

Q: How do torsion testers work?

A: Torsion testing machines are used to simulate the torsional movement of materials, components or end-user products. The torsion drive of the materials testing machine operates and controls the torque and speed of the rotating motion. To run a test, the specimen is placed in the grip of the torsion testing machine. Depending on the application and test purpose, one end of the specimen is twisted around the long axis for a specified number of turns, a specified amount of time or until failure.

Q: What is the purpose of torsion testing?

A: The purpose of torsion testing is to determine the behavior exhibited by a material or test specimen when subjected to twisting or torsional forces resulting in about-axis shear stresses due to applied moments.

Q: What values can a torsion testing machine possibly measure?

A: Measurable values include: shear modulus of elasticity, yield shear strength, torsional fatigue life, ductility, ultimate shear strength and shear modulus of rupture.

Q: What are the different types of torsion testing?

A: Three common forms that torsion testing takes include failure testing, verification testing, and operational testing. Torsion to failure testing requires twisting a test sample until it breaks and is intended to measure the strength of the sample. Proof testing is designed to observe how a material behaves under a specified torque load over a set period of time. Operational testing measures the performance of a material under the intended use conditions for its application.

Q: What are the different types of torsion testing materials?

A: Materials used in structural, biomedical, and automotive applications are among the most common materials that experience torsion in their applications. These materials may be composed of metals, plastics, wood, polymers, composites, or ceramics, and often take the form of fasteners, rods, beams, tubes, and wires.

Q: How to choose a fatigue testing machine in 4 simple steps?

A: Step 1 - Choose your frames
Step 2 - Choose your controller software
Step 3 - Choose your accessories
Step 4 - Contact us

Q: What is the application of torsion testing machine?

A: Testing machines for torsion testing are mainly used in science, research and teaching, in testing laboratories and in production control during production. They are used to determine the torque load of specimens made of different materials in static tests, e.g: Plastics, composite materials.

Q: What configuration is required for a torsion testing machine?

A: Each torsion tester configuration includes your choice of test controller, easy-to-setup test software, test stand with rotary actuator or motor, power supply, torsion test fixture, and torque and angular position sensors.

Q: What is the method of torsion testing machine mild steel?

A: Rotate one grip at a reasonable constant speed until the test piece breaks, here the shearing stresses will develop in any cross section of the bar whose value increases linearly from zero at the centre to a maximum at the outer periphery.

Q: What are the safety procedures for torsion testing?

A: Notes: 1) Carefully measure the size of the test piece. 2) Accurately measure the torsion angle to obtain the corresponding torque value. 3) The specimen should enter between the jaws correctly. 4) Stop to m/c after the specimen breaks.

Q: Do torsional testing machines use sensors?

A: Yes, the torque sensor is the core of the torque testing machine. It is the component that senses the torsional strength experienced by the device under test (DUT).

Q: What is the torsion angle in a torsion testing machine?

A: The angle between 2 o'clock and 12 o'clock is called the angle of twist and is usually represented by the Greek symbol phi. This angle allows us to determine the shear strain at any point along the cross-section.

Q: What is the range of torsion testing machines?

A: The torsion testing machine features a horizontal torsion axis, maintenance-free AC servo drive, and a torque range of 20 NM to 500 NM or 1,000 NM to 2,000 NM for single-axis torsion testing.

Q: What is the observation of torsion tester?

A: A torsion test for failure requires that the test sample be twisted until it breaks and is designed to measure the strength of the sample. A proof test is designed to observe the material under a specified torque load over a set period of time.

Q: What is the difference between torsion testing and tensile testing?

A: During tensile testing, transverse stresses also occur due to axial stretching and reduction in the cross-sectional area of the neck. In torsion testing, shear stress is important as the specimen twists in the angular direction.

We're well-known as one of the leading torsion testing machine manufacturers in China. Please rest assured to buy high quality torsion testing machine for sale here from our factory. For price consultation, contact us.

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