There are generally two kinds of mechanical properties testing for metal castings and forgings required by GB / t3808 and GB / t229, one is impact resistance testing, the other is tensile testing.

Impact resistance test:

Metal casting and forging materials will fracture under high impact force. The impact resistance test can not only test the impact resistance of components, but also judge whether the selected materials are suitable.

Use of equipment

The combined detection Charpy pendulum impact testing machine is used to measure the impact resistance of metal materials under normal or low temperature dynamic load, so as to judge the properties of materials under dynamic load. Equipment in accordance with national standards

The development and production of impact testing machine meet the requirements of GB / t229 "metal Charpy Notch Impact Testing Method" for impact testing of metal materials. The control system adopts professional industrial control microcomputer control and touch screen operation

The method has the advantages of simple operation and high efficiency. The testing machine has the functions of automatic pendulum taking, pendulum setting, impact, sample sending, data recording, etc. it is more suitable for the laboratories of metallurgical and mechanical manufacturing departments that continuously conduct a large number of impact tests

According to the properties of materials, the impact test equipment with different energy and structure such as 300j, 500J, 600J and 750j can be selected.

Casting process is an economical and efficient method for processing complex shaped parts. The casting method can directly produce finished products or semi-finished products

Less processing is needed. Similar to castings, forgings are usually irregular in shape. In many cases, the standard sample of casting or forging can not represent the characteristics of the whole part. Therefore, it is necessary to test the whole system

It is difficult to clamp these parts due to their different shapes and sizes, and high force is usually applied during the test.

Use of test equipment

In order to meet the test requirements of hot rolling, casting and forging, CMT series electronic universal testing machine or waw series microcomputer controlled electro-hydraulic servo universal testing machine are used for metal tension, compression, bending, shearing, peeling, bending, etc

There are three control modes of stress control, strain control and displacement control in the mechanical property test. During the test, the three modes can be smoothly switched according to the set program, and Reh, rel and R can be automatically calculated

According to GB, ISO, DIN, ASTM, JIS and other international standards, mechanical test and analysis can be carried out; These loading frames can be equipped with the test standard sample

Extensometer to produce accurate modulus and results. When testing a complete part, a customized fixture, a T-slot test bench or a special fixture can be configured on the loading rack to suit the shape of the test part. Fully understand

To provide accurate fixture solutions to meet the needs of users by using the tools, test conditions and material properties.