주문하세요
Falex Multi-Specimen Test Machine
ASTM Specifications :
D-2266, D-3702, D-4172
The Falex Multi-Specimen Test Machine is the most versatile bench test equipment available for controlled friction
and wear evaluations. By selecting one of the 12 easy-to-change adapters, 12 different test geometries can be
employed in either unidirectional or reciprocal sliding motion
Adapters and purpose :
Geometry Test purposes Test Specimens ASTM or other standards
Ball on Flat Evaluates coatings, lubricants and materials Rotating ball against stationary flat disc. Point contact Wide
commercial and laboratory use
Four Ball Wear Measure friction and wear preventive characteristics of lubricants in sliding applications Rotating ball
loaded against three stationary balls. Three point contact D-2266
D-4172
Gear/Cam Contact Simulates combined sliding and rolling in cam shaft or gear set Two loaded rollers against fixed
dual-radii wear track Wide commercial and laboratory use
Infinitely Variable Roll/Slide Simulates combined sliding and rolling in cam shaft or gear set with infinitely variable
ratios Rollers on disc. Line contact -
Lip or Face Seal Measures wear rates and performance of various seals and materials User-made seal material
rotates against mating steel face -
Liquid Erosion Evaluates erosion resistance in slurry media Two rotating test pins immersed in slurry media -
Pin-On Disc
(Single Pin or 3-Pin) Evaluates coatings, lubricants and materials Rotating hemispherical pin loaded against
stationary flat disc Wide commercial and laboratory use
Pump Rotor Vane Evaluates friction and wear characteristics of materials and fluids Three rotating pump vanes
loaded against stationary disc Wide commercial and laboratory use
Rolling Four Ball Assess tendency of fluids to produce fatigue failures in rolling contacts Single upper ball against
three freely rotating lower balls IP 300
Stick-Slip Compare stick-slip frictional properties of lubricants Flat on flat. Area contact Under ASTM evaluation
Thrust Washer Evaluates wide variety of materials, lubricants and coatings, including plastics Rotating thrust washer
axially loaded against stationary flat washer D-3702
Walking Cam Simulates walking cam of a drag line Two rollers driven against single land disc -
Features and specifications
Speed & Velocity:
Ten turn variable speed control potentiometer. Dual speed range from 60 to 900 and 100 to 3,600 RPM. Optional
ranges from ½ to 25, 80 to 1800, 0 to 450 and 150 to 7,200 RPM, ±0.5% accuracy*, and to 0.01 RPM with optional
stick/slip adapter with 10,000:1 gear reducer.
Load:
Applied through dual range 2:1 or 10:1 lever system with dead weights. Bale rod weights supplied: ¼ lb. to 80¾ lb.
Test loads from ½ lb. to 807.5 lbs. Optional pneumatic load is available with the Microprocessor Controlled Loading
System and Microprocessor Data Acquisition and Control System. These system options test with loads from 30 to 800
lbs. ±2% accuracy* and 5 - 60 lbs. ±2% accuracy* with low load option. Pneumatic load systems require 80 psi air
and replace the 80¾ lb. weights.
Temperature Control:
Controlled system with digital proportional indicator/controller, heater cup and automatic temperature start-up.
Ambient to 150 ±3°C. Optional refrigeration system cools reservoir fluid from ambient to -30° C. for circulation
through optional cooling chamber.
Environments:
Wet or dry. Enclosed chamber for humidity or circulated special atmospheres and fluids. Optional pressure chamber
available, atmospheric to 100 psi.
Motion:
Unidirectional or optional oscillatory, both high and low speed.
Low speed from 20 to 600 cycles per minute, 0° - 90°.
High Speed:
|
|
|
|
Torque:
Load cell with digital panel meter and digital printer. Automatic torque cut off. Field calibration system. Provision for
break-away (static) friction measurement.
Wear:
Continuous display dial indicator on lever arm. Allows rate of wear and total wear measurement. Each division
is.0002" or .002" depending on lever ratio. An optional electronic wear measuring system is available for use on Falex
Recording Systems and Data Acquisition Systems.
Specimen Temperature:
Panel mounted digital indicator and digital thermal printer. Adjustable automatic temperature limit cut-off.
Thermocouple included.
Test Time:
Digital timer/controller for automatic start or shut off.
Cycle Counter:
Panel mounted cycle counter with automatic high limit cut-off.
Motor:
2 HP, variable speed DC motor.
Drive System:
The unit is equipped with a 2 HP, variable speed motor with a ±0.5% accuracy (full scale) and is configured for 220 V,
single phase, 50 or 60 cycles.
The motor drives the upper vertical shaft. The lower shaft is stationary. The speed is controlled using a control
potentiometer with speed ranges from 60 to 3600 rpm. Optional pulley configurations allow speeds from ½ to 7200
rpm. The 10,000 to 1 gear reduction, available with the optional stick/slip adapter, allows speed control to 0.01 rpm.
Oscillatory motion is also available in standard and high-speed versions enabling simulation of start/stop motion.
Maximum oscillation is 90°.
Loading:
Load is applied through a two-position lever having a 2:1 or 10:1 ratio. The 2:1 lever ratio is for loads from ½ lbs. to
80 lbs. The 10:1 lever ratio is for loads from 20 lbs. To 807.5 lbs. Optionally, a microprocessor controlled loading
system is available. This is an electronically regulated pneumatic system, which eliminates the use of weights and is
totally programmable for ramping and soaking times. This option is standard with the Microprocessor Controlled Data
Acquisition and Control System and may be added to the standard Digital Instrumentation System. Applied loads are
from 30 to 800 lbs. standard and from 5 to 60 lbs. With optional low load option.
Environments:
Tests can be performed in environments to simulate field conditions. Test specimens can be coated or the entire test
area submerged in fluid. More severe testing may be achieved by running in a dry condition. This is desirable when
evaluating solid film lubricants or self-lubricated materials. Test can be run at elevated temperatures to 150°C.
(300° F) or cooled to -30° C (-22° F). Additionally, controlled humidity, inert gasses or other special atmospheres
can be introduced by using a closed chamber. With the optional recirculation system, a constant flow of filtered
and/or heated fluid may be introduced to the test area.
Temperature Control:
Temperature control is through he use of a programmable controller. The unit includes a table heater for dry
atmosphere tests and a chamber heater for elevated fluid tests. Two low temperature chambers are available one for
use with a solvent/dry ice or water/ice slurry and one for use with a mechanically refrigerated recirculating bath. The
temperature controller is designed to automatically start the test machine after fluid or specimens reach the desired
test temperature.
Friction Measurements:
The lower shaft transmits a signal through a load cell for determining torque. Coefficient of friction can be determined
from this torque value through calculations unique to each specimen configuration.
Wear Measurement:
Each machine is equipped with a micrometer-type wear-indicating device. This is designed to advise if accelerated or
catastrophic wear is occurring. An optional electronic wear device can be chosen incorporating an LVDT and an
analog chart recorder for permanently recording wear data.
Instrumentation System:
The standard Digital instrumentation System includes panel mounted digital meters for monitoring torque, time,
cycles, and specimen temperature, all worth high-limit, cut-off capabilities. In addition, the system includes a panel
mounted temperature controller, speed indicator and printer for digitally recording friction and specimen
temperature. The Digital Instrumentation System can also interface to a chart recorder or data acquisition system. A
maximum of 6 outputs: torque, wear, specimen temperature, environment temperature, test load, and test speed can
be monitored.
A Microprocessor Data Acquisition and Control System is available. This system automates and expands the features
offered with the Digital Instrumentation System in a computer based system. Test variables and data can be
controlled and logged. The system is designed for keyboard entry of test parameters. Hardware includes a colour
video display, operator keyboard, data acquisition printer, test machine/microprocessor interfacing, menu-driven,
user-friendly software, fixed-disk drive a 3½ inch floppy diskette drive, user memory RAM, Internal Cartridge Tape
Drive and Internal Modem.
ESEL TechTra Inc.
#1382-4, Kuweol-3dong, Namdongku, Incheon, korea
©Copyright 1998 www.labkorea.com ® All right reserved