Sinostar Industrial Machinery Co., Ltd.

CMM is ideally suited to precision engineering fields that require tight tolerance control and complex geometry analysis because of its high accuracy and versatility. By using a CMM in Sinostar MACH, the length, diameter, shape error, and positional error of a part can be accurately measured, allowing for strict control of product quality. Specifically the following types of parts suitable for CMM:

● Automotive parts

● Mould industry

● Machining parts

● Gear parts

● Engine block

● Complex curved parts

Tensile testing refers to a test method that measures the process characteristics of a material specimen under axial tensile load until it deforms or breaks. The data obtained from the tensile test can be used to determine the material's elastic limit, elongation, elastic modulus, proportional limit, area reduction, tensile strength, yield point, yield strength and other tensile performance indicators. Creep data can be obtained from tensile tests conducted at high temperatures. The steps for metal tensile testing can be found in ASTM E-8 standard.

Impact test of metal materials is an important means to evaluate the performance of materials under sudden impact loads. Impact test can simulate the sudden impact of materials in actual working environment, such as mechanical failure, collision, etc., so as to understand the impact resistance and damage mechanism of materials.

Sinostar MACH provides pendulum impact test and drop hammer impact test.

This machine is used to measure the impact resistance of metal materials under dynamic load. The equipment can detect the zero return, energy loss and swing cycle of the host through the configured computer, and can also display, store and print the test results.

Metallographic testing is a method of observing and analyzing the microstructure of metal materials. Through metallographic analysis, we can understand important information such as material composition, impurity content, non-metallic inclusions, pores, cracks, deformation and wear, which provides a reliable scientific basis for us to optimize processes and control quality.

1. It uses standardized testing methods to reveal and determine the macroscopic and microscopic visual characteristics of materials.

2. The process involves preparing metal samples by cutting, inlaying, polishing and etching.

3. Then use optical or electron microscopes to analyze its microstructure.

Non-destructive Testing

In Sinostar MACH non-destructive testing is used in a wide range of applications, from casting and forging to welding and machining you can find it all the time, it helps us to detect internal defects not only in workblank of casting and forging before machining, but also in welded construction, and of course it also makes an outstanding contribution to the detection of small cracks on the surface of the finished machining parts.

Our main testing methods include:

1. Ultrasonic Testing (UT),

2. Magnetic Particle Testing(MT),

3. Penetration Testing(PT).

Hardness is one of the important mechanical properties of metal materials, especially there is a heat-treatment requirement, hardness testing can effectively reflect the mechanical properties and performance of metal materials, which always enable products of Sinostar MACH to meet our customer's requirements for the using purpose. Hardness can be tested by the following ways:

• Brinell hardness testing(HB),

• Rockwell hardness testing(HRC),

• Vickers hardness testing(HV),

• Leeb hardness testing(HL).

Doing Composition testing is a fundamental safeguard provided by Sinostar MACH for each batch of raw materials, as only the right raw materials can make our final products achieve the purpose of use, for this reason, Sinostar MACH requires all our raw material suppliers to provide the batch number of the raw materials, every product can be traced back to its origin;

We also require the suppliers to provide the raw materials’ composition report to be compared with the result of our own spectral analysis, so that only the raw materials which passed the testing can start its production journey.

Magnetic particle testing is a method of observing defects using magnetic particles as display media.

After the ferromagnetic material workpiece is magnetized, due to the existence of discontinuity, the magnetic lines of force on the surface and near the surface of the workpiece are locally distorted, generating a leakage magnetic field, which adsorbs the magnetic particles applied to the surface of the workpiece and forms visually visible magnetic marks under appropriate lighting, thereby showing the location, size, shape and severity of the discontinuity.

The sensitivity of magnetic particle testing can detect discontinuity widths up to 0.1μm. By combining multiple magnetization methods, magnetic particle testing is almost unaffected by the size and geometry of the workpiece, and can detect defects in all directions of the workpiece.