The main uses and application scope of the four-ball friction testing machine are introduced

MRS-10A microcomputer control four-ball friction testing machine First, the main use and scope of application of the machine is mainly in the form of sliding friction, in the form of higher point contact pressure conditions to assess the bearing capacity
of lubricants.

Including three indicators
: large non-snap-free bite load PB, sintering load PD, comprehensive wear value ZMZ and so on.

The machine can also do long-term anti-wear test of lubricant, determine the coefficient of friction, record the friction force and temperature curve
.

Applicable standards: GB/T12583-98 Lubricant extreme pressure performance determination method (four-ball machine method) GB3142-82 Lubricant bearing capacity determination method (four-ball method) SH/T0189-92 Lubricating oil wear resistance determination method (four-ball machine method) SH/T0202-92 Grease extreme pressure performance determination method (four-ball machine method) SH/T0204-92 Grease anti-wear performance determination method (four-ball machine method) Second, the main technical indicators Serial number item name Weigh the technical index 1 test force range (stepless adjustable) 60N ~ 10kN2 test force indication relative error ± 1% 3 friction test range 0 ~ 300N4 friction test error ±3% 5 spindle speed range (stepless adjustable) 200 ~ 2000r/min6 spindle speed error ±5 r/min 7 friction pair temperature control range room temperature ~ 750C8 friction pair temperature control error ± 20C9 test time control range 1 second ~ 999 hours 10 spindle speed control range 1 ~ 99999999 turn 11 test steel ball φ12.
7mm 12 dimensions 960*750*1600 (mm)13 weight 600kg three, working conditions a) room temperature 10 ~ 350C range; b) Relative humidity not more than 80%; c) The surrounding environment without vibration, no corrosive medium and no strong electromagnetic field interference; d) The fluctuation range of the supply voltage shall not exceed ±10% of the rated voltage, the fluctuation range of the frequency shall not exceed 2% of the rated frequency, and the unbalanced voltage of the three-phase voltage shall not exceed 10V; e) Correct installation on a solid basis, the level does not exceed 0.
2/1000.
4, the basic configuration 4.
1.
The main engine of the testing machine: composed
of the base, spindle drive, piston force system, electrical control cabinet, etc.

4.
2.
All-digital electrical measurement amplification control system and liquid crystal display system: real-time display of test force, friction force, speed, test revolution, time, temperature
.

4.
3.
Load sensor 4.
4.
Based on WINDOWS computer data processing software 4.
5.
Computer: Lenovo brand computer 4.
6.
Printer: HP color A4 printer 4.
7.
High-precision measurement microscope: Shanghai Optical Instrument Factory 15J, magnification 25X 4.
8.
High temperature platinum resistance sensor 1 4.
9.
Test friction pair: a) High temperature friction auxiliary oil cartridge 1 set; b) 1 set of room temperature friction auxiliary oil tank; c) Four-ball machine special steel ball 100 pieces.
V.
Measurement and control system and test software use function (1) to implement the national standard GB/T12583-1998 (lubricant extreme pressure performance measurement), ZB E 34007-87 (four-ball method anti-wear test method) and other test methods; (2) Friction and peak and load, the accuracy is 20% of the range of each range ±1% of the starting value, can be automatically calibrated; (3) Real-time display of motor rotational number (speed) and test duration; (4) With multiple protection functions: friction, load, motor rotation, etc.
; (5) Real-time recording of friction-time and load-time test curves, high-speed sampling; (7) When the test force is greater than a certain upper limit, the system will automatically enter the overload protection, and take certain measures in time to ensure the safety of the testing machine; (8) The test data adopts the data file management mode, all test data and curves can be saved, and the print test report format meets the requirements
of the national standard.

Tags:Microcomputer controlled four-ball friction testing machine