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Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D

    Buy cheap Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D from wholesalers
     
    Buy cheap Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D from wholesalers
    • Buy cheap Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D from wholesalers
    • Buy cheap Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D from wholesalers

    Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D

    Ask Lasest Price
    Brand Name : WANCE
    Model Number : ETM205D
    Certification : CE SGS ISO9001
    Price : Negotiation
    Delivery Time : 30 working days
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    Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D

    Electromechanical Tensile Testing Machine ASTM A370 Mechanical Testing of Steel Products 200kN ETM205D


    Function

    The ETM type D Series addresses the needs of standardized and routine testing, providing the user high quality at the most affordable price. The dual column testing systems with rugged structure are suited for tension and/or compression applications with load range requirement. They are typically used for quality control and production testing.


    Applications

    Tension, bending, compression, tearing, shearing for Metals, building components, large fasteners, composites, wood products


    Control type

    1/500000 resolution, fully-closed control of Stress control, Strain control and Displacement control and stepless in the full measurement range


    Driven type

    Pre-loaded ball screws driven by imported AC servo motor


    Measurement

    USA Brand load cell for force measurement, Japanese photoelectrical encoder for displacement measurement and USA or PRC superior extensometer for extension measurement


    Operation

    • Full computer control with professional test software
    • Equipped with portable control keypad with functions of Up, Down, Stop, Jog up, Jog down, and test start
    • Security Protection
    • Crosshead position limiter; Emergency stop switch; electronics protection once overload, over-current, over-voltage, and over-temperature

    Standards: ASTM A370


    Scope:

    These test methods2 cover procedures and definitions for the mechanical testing of wrought and cast steels, stainless steels, and related alloys. The various mechanical tests herein described are used to determine properties required in the product specifications. Variations in testing methods are to be avoided, and standard methods of testing are to be followed to obtain reproducible and comparable results. In those cases in
    which the testing requirements for certain products are unique or at variance with these general procedures, the product specification testing requirements shall control.


    Tension Test:

    The tension test related to the mechanical testing of steel products subjects a machined or full-section specimen of the material under examination to a measured load sufficient to cause rupture. The resulting properties sought are defined in Terminology E 6.


    In general, the testing equipment and methods are given in Test Methods E 8. However, there are certain exceptions to Test Methods E 8 practices in the testing of steel, and these are covered in these test methods.


    Testing Apparatus and Operations
    Loading Systems—There are two general types of loading systems, mechanical (screw power) and hydraulic. These differ chiefly in the variability of the rate of load application. The older screw power machines are limited to a small number of fixed free running crosshead speeds. Some modern screw power machines, and all hydraulic machines permit stepless variation throughout the range of speeds.


    The tension testing machine shall be maintained in good operating condition, used only in the proper loading range, and calibrated periodically in accordance with the latest revision of Practices E 4.
    NOTE 1—Many machines are equipped with stress-strain recorders for autographic plotting of stress-strain curves. It should be noted that some recorders have a load measuring component entirely separate from the load indicator of the testing machine. Such recorders are calibrated separately.


    Loading—It is the function of the gripping or holding device of the testing machine to transmit the load from the heads of the machine to the specimen under test. The essential requirement is that the load shall be transmitted axially. This implies that the centers of the action of the grips shall be in alignment, insofar as practicable, with the axis of the specimen at the beginning and during the test and that bending or twisting be held to a minimum. For specimens with a reduced section, gripping of the specimen shall be restricted to the grip section. In the case of certain sections tested in full size, nonaxial loading is unavoidable and in such cases shall be permissible.


    Speed of Testing—The speed of testing shall not be greater than that at which load and strain readings can be made accurately. In production testing, speed of testing is commonly expressed: (1) in terms of free running crosshead speed (rate of movement of the crosshead of the testing machine when not under load), (2) in terms of rate of separation of the two heads of the testing machine under load, (3) in terms of rate of
    stressing the specimen, or (4) in terms of rate of straining the specimen. The following limitations on the speed of testing are recommended as adequate for most steel products:
    NOTE 2—Tension tests using closed-loop machines (with feedback control of rate) should not be performed using load control, as this mode of testing will result in acceleration of the crosshead upon yielding and
    elevation of the measured yield strength.


    Any convenient speed of testing may be used up to one half the specified yield point or yield strength. When this point is reached, the free-running rate of separation of the crossheads shall be adjusted so as not to exceed 1⁄16 in. per min per inch of reduced section, or the distance between the grips for test specimens not having reduced sections. This speed shall be maintained through the yield point or yield strength. In
    determining the tensile strength, the free-running rate of separation of the heads shall not exceed 1⁄2 in. per min per inch of reduced section, or the distance between the grips for test specimens not having reduced sections. In any event, the minimum speed of testing shall not be less than 1⁄10 the specified maximum rates for determining yield point or yield strength and tensile strength.


    It shall be permissible to set the speed of the testing machine by adjusting the free running crosshead speed to the above specified values, inasmuch as the rate of separation of heads under load at these machine settings is less than the specified values of free running crosshead speed.


    As an alternative, if the machine is equipped with a device to indicate the rate of loading, the speed of the machine from half the specified yield point or yield strength through the yield point or yield strength may be adjusted so that the rate of stressing does not exceed 100 000 psi (690 MPa)/min. However, the minimum rate of stressing shall not be less than 10 000 psi (70 MPa)/min.


    Specifications:

    ModelETM205
    TypeType D
    Capacity (kN)200
    Calibration standardISO 7500, Class 1 / Class 0.5
    Force range0.2% ~ 100%FS / 0.4 ~ 100%FS
    Force accuracy±1.0% / ±0.5% of reading
    Force resolution1/500000FS
    Position accuracy±0.50% of reading
    Position resolution (μm)0.025
    Crosshead speed (mm/min)0.001 ~ 250
    Crosshead speed accuracywithin ±1% / ±0.5% of set speed
    Power requirementThree-phase, 380±10% VAC, 50/60Hz
    Power consumption5kW
    Weight (kg)1500


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