1、 Equipment name: Micro computer controlled pendulum impact testing machine

2、 Model: JB-W300C

3、 Performance description:

The impact testing machine is a new product developed in strict accordance with the national standard GB/T3808-2018 "Inspection of Pendulum Impact Testing Machines", which updates and replaces the B impact testing machine. Conduct impact tests in accordance with the national standard GB/T229-2020 "Charpy notch impact test method for metals". This series of impact testing machines is used to test the impact resistance performance of metal materials under dynamic loads, and is an essential testing instrument for metallurgical, mechanical manufacturing and other units. The cross-section of the sample is 10 × 10mm is mainly used for testing black metals, especially steel and its alloys, with high impact toughness. This machine adopts double column support, which improves the rigidity of the impact machine, ensures the accuracy of test data, and significantly improves the service life of the testing machine. The maximum impact energy of this machine is 300J. It is equipped with an axial positioning device, which has the advantages of simple sample placement, high work efficiency, high positioning accuracy, and reliable indication. Therefore, it is particularly suitable for cold impact testing in conjunction with low-temperature tanks for impact testing. This machine adopts a three-phase four wire 380V power supply, which is also suitable for three-phase four wire power supply.
1、Using PC microcomputer control, electric swing, impact, microcomputer measurement, calculation, screen digital display of results and printability, etc., with high work efficiency and testing accuracy. After the impact test, the remaining energy can be used to automatically swing and prepare for the next test. The operation is simple and the work efficiency is high. Its superiority can be better demonstrated in laboratories that continuously conduct impact tests and in industries such as metallurgy and mechanical manufacturing that conduct a large number of impact tests. The computer can calculate and display the impact absorption energy, impact toughness, pendulum angle, and test average of materials, and can print the current test data and the average value of the test.
2、The host adopts an integrated casting double support, with a simple beam support for the main shaft, hanging pendulum, and reasonable radial load distribution of the bearings. Especially for a large number of impact machines, it reduces the deformation of the main shaft and greatly reduces the energy loss caused by bearing friction.
3、Adopting a two-stage standard reducer for lifting the hammer, the operation is smooth.
4、The hanging device adopts hydraulic buffering, ensuring stable hanging.
5、The three-dimensional design of the pendulum ensures accurate strike center and precise pendulum torque.
6、The impact knife is installed and fixed with screws, making it easy and convenient to replace
7、Automatic judgment after sample fracture, output
8、The host is equipped with safety protection pins and a safety net.
The testing machine conducts impact tests on metal materials in accordance with the national standards GB/T3808-2018 "Pendulum Impact Testing Machine", GB/T229-2020 "Metal Charpy Pendulum Impact Testing Method", and international standards ISO R148 "Steel Simple Beam (V-notch) Impact Test" and ISO R83 "Steel Charpy Impact Test (U-notch).

4、 Main technical indicators:

1· Impact energy: 300J
2. Impact speed: 5.24m/s
3. Pendulum pre lift angle: 150 °
4. Distance from the center of the pendulum to the impact point: 750mm
5. Corner angle of support jaws: R1.0~1.5mm
6. Impact blade fillet: R2mm
7. Sample support span: 40+0.2mm
8. Standard sample size: 10 × (10, 7.5, 5) × 55mm
9. Display method: Three displays (dial display, touch screen display, microcomputer display)
10. Angle of inclination of sample support surface: 11 °
11. Impact knife angle: 30 °
12. Impact knife thickness: 16mm
13. The two seats of the sample should be on the same plane, with a horizontal unevenness of 0.05mm 1/100;
14. Power supply and power: three-phase four wire 50Hz 380V 180W
15. External dimensions: 2025 × eight hundred × 2250mm
16. Net weight of testing machine: 1200Kg
17. Environmental conditions: There is no corrosive medium, no vibration, and no strong electromagnetic field around

5、 Main equipment configuration:

1·300J host                                      1set
2.300J pendulum                                   1set
3.Motor (installed on the host)                                1set
4. Swing transmission device (installed on the host)                  1set      
5. Automatic hanging device (installed on the host)                              1set
6. Aluminum alloy stainless steel safety protection net                               1set
7. Sample centering device                                          1set
8. Sample recovery device                                 1set
9. Specialized measurement and control software                               1set
10. Digital touch screen                                           1set
11. Lenovo microcomputer                                 1set
12. Printers

6、 Display section: Three displays (dial display, touch screen display, microcomputer display)

1· Scale display: 

After the impact is completed, the impact energy value can be visually read through the pointer on the scale, but the accuracy is low.

2. Touch screen display:
The local screen has a total of startup language selection interface, main operation interface, storage and call interface, password input interface, system settings, etc.
Test startup interface
Choose a Chinese and English system before entering the experiment

Chinese and English experimental interface

The main working interface of the device, in which various actions of the device are implemented

3. Computer measurement and operation display: 

A high-precision photoelectric encoder is installed at the end of the pendulum shaft, which is used to accurately test the lifting angle of the pendulum and the rebound angle of the pendulum after impact. It can automatically identify the lifting angle and rebound angle, and the number of output level pulses is proportional to the lifting angle or rebound angle of the pendulum. The testing angle accuracy can reach 0.06 °, and the angle resolution can reach 0.015 °. The microcomputer obtains accurate impact energy values through signal processing and calculation.
The software design has an automatic calibration function, which can test the friction energy loss of bearings, pointer friction energy loss, and air resistance energy loss. It can automatically subtract the existing friction energy loss and air resistance loss from the calculation results, making the test results more accurate.

Software Function Introduction:

Main interface: The main operations and information display of the device are carried out within the main interface. The main interface is divided into the following functional areas:

Figure 2.2

Including ten parts: create, save, open, language version, system parameters, cycle measurement, pointer friction, login, registration, and exit. 1. New
Function: Input sample data, can change the number of samples per group, and customize items as needed.
Method: Click the button, enter the experimental data to create the experimental data, as shown in Figure 2.3:

Figure 2.3

After creating the sample data, click "OK" to save it; Please do not modify defined projects without special needs.

Data processing and printing

1· Data processing
Click the button to open the operation interface for historical data, as shown in Figure 3.1:

Figure 3.1

Click on the batch number to view the data of this batch of experiments. For unnecessary data, click on the batch number and then click "Delete Batch". For a certain piece of data under a batch that is not needed, you can select unnecessary data and click "Delete One" to delete it.

2. Print and Preview
Click on the batch number to open the test data for this batch, click on "Export to Excel" and select the Excel template, as shown in Figure 3.2; Click "Print Report" to export the data to Excel for printing, as shown in Figure 3.2:

Figure 3.2

7、 Service commitment

The equipment warranty period is one year from the official delivery date. During the warranty period, the supplier provides timely and free maintenance services for various equipment malfunctions. Timely and free replacement of all types of parts damaged by non-human factors. If the equipment outside the warranty period malfunctions during use, the supplier actively assists the ordering party in completing maintenance tasks.

JB-W300A microcomputer controlled impact testing machine