HuiNuo QCJ-120A coating impact Tester, paint film Impact Tester GB/T 5237.4 standard

QCJ-120 (120A, 120B) series paint film impact Tester is used for the impact resistance test of paint film expressed by the maximum height of 120 cm with a fixed weight falling on the test plate without causing paint film damage. After the impact head of this instrument hits the test plate, there is no secondary rebound phenomenon.

standard

GB/T1732-93 Paint film impact resistance determination method

GB/T5237.4-2000 Aluminum alloy building profiles Part 4 powder coated profiles

ASTM· D2794-92 Test Method for Resistance of Organic Coatings to Rapid Deformation (Impact).

Operating Principle

The weight hammer with the hook is fixed at the required height by the controller screw, and its height, i.e., the height of the slide scale, coincides with the positioning mark. Press the control screw then the controller spring is compressed, and the round hole of the control slider is aligned with the round hole of the upper cover of the controller and the lower bottom of the controller so that the hook falls off, and the hammer falls, hits the punch rod, and the punch rod acts downwards on the test plate placed on the pillow cushion block in advance. After that, lift the hammer body and take out the test plate to observe the paint film test on the test board.

Operating Principle:

(1) Placement of the test board. Place the prepared test plate on the pillow block, and close to the concave hole of the pillow block, with the paint film facing up, so that the impact point is not less than 15mm away from the edge of the test board, or in the middle of the test board. If a test plate is used for several tests, the edges of each impact point should be separated by no less than 15 mm.

(2) The setting of the hammer throwing height. At the same time, loosen the controller screws, and the control device can move up and down according to the slides on both sides of the slide. According to the test requirements, when taking the height first, please coincide the engraved line on the positioning mark with the scale line of the slide cylinder, and tighten and fix the controller screws.

(3) Test examples. In accordance with the relevant provisions in the standard, complete the setting of the hammer throwing height, and place the prepared test plate on the pillow cushion block. When the control screw is pressed, the hammer falls freely on the punch bar, which transmits the impact force to the test plate on the pillow cushion block. Lift the hammer up, hang the hook on the hammer by the controller, and take out the test plate. Observe with a 4x magnifying glass to determine whether the paint film has cracks, wrinkles and peeling. The example of this test is for reference only, and the specific test method is subject to the relevant provisions in the standard.

Impact device × 1

[Note] Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.