ZL-5027 Microcomputer Controlled Four-Ball Friction Testing Machine

Applicable Standards: 

GB/T12583-98 Determination of extreme pressure properties of lubricants (four-ball machine method)

GB3142-82 Determination of lubricant carrying capacity (four-ball method)

SH/T0189-92 Method for determination of anti-wear properties of lubricating oil (four-ball machine method)

SH/T0202-92 Determination of extreme pressure properties of grease (four-ball machine method)

SH/T0204-92 Method for determination of anti-wear properties of grease (four-ball machine method)

Main Specifications:

Working Conditions:

1. a) Room temperature within the range of 10~35℃;
2. b) Relative humidity is not greater than 80%;
3. c) In an environment without vibration, corrosive media and strong electromagnetic field interference;
4. d) The fluctuation range of the power supply voltage should not exceed ±10% of the rated voltage, the fluctuation range of the frequency should not exceed 2% of the rated frequency, and the unbalanced voltage of the three-phase voltage should not exceed 10V;
5. e) Install correctly on a solid foundation, and the levelness does not exceed 0.2/1000.

Basic Configuration:

Testing Machine Host: composed of machine base, spindle drive, piston force application system, electrical control cabinet, etc.

Fully Digital Electrical Measurement Amplification Control System And Liquid Crystal Display System: real-time display of test force, friction, rotation speed, test revolutions, time, and temperature.

Load cell sensor

Based on WINDOWS computer data processing software

Computer: Brand computer

Printer: Color A4 printer

High-Precision Measuring Microscope: Optical Instrument Factory 15J, magnification 25X

High temperature platinum resistance sensor

Friction Pair for Testing:

1. a) 1 set of high-temperature friction auxiliary oil box;
2. b) 1 set of normal temperature friction auxiliary oil box;
3. c) 100 special steel balls for four-ball machine.

Functions of Measurement and Control System and Test Software:

Implement test methods such as national standard GB/T12583-1998 (lubricant extreme pressure performance measurement method), ZB E 34007-87 (four-ball anti-wear test method);

Friction force, peak value and load, the accuracy is ±1% of the indication value starting at 20% of each range, and can be automatically calibrated;

Real-time display of motor revolutions (speed) and test duration;

It has multiple protection functions: friction, load, motor rotation, etc.;

Real-time recording of friction force-time and load-time test curves, high-speed sampling;

The variable structure PID control algorithm is used to adjust the loading process, the constant speed control error is ≤5%, and the pressure holding control error is ≤0.5%;

When the test force is greater than a certain upper limit, the system will automatically enter overload protection and take certain measures in time to ensure the safety of the testing machine;

The test data adopts data file management method, which can save all test data and curves, and print the test report format to meet the national standard requirements.