The circle marking tester produced by TRUIT is designed in accordance with GB/T 1720 standard. The instrument is used to determine the adhesion ability of various coating films to the surface of the coated object, and many circles of the same diameter are continuously drawn on the coating film to be tested, and these circles overlap each other at a certain distance, and then divided into seven parts according to the area size of the intersecting part of the circle. During the evaluation, check the completeness of each part of the paint film, and evaluate the corresponding grade with more than 70% of the coating film intact in the area of a certain part.
TR 3599/2 - Circle Marking Tester
1. Structural principle
This instrument is desktop and is divided into four parts
·The main transmission part is composed of a motor, a toothed belt, a toothed pulley, a helical gear transmission and a drawing head. The depiction head is composed of a nose screw, a silk mother and an eccentric head
·The workbench part is composed of a lead screw, a half-open nut and a test bench
·The base is composed of slide rails and electrical control. Electrical control includes piercing display circuits and control motor circuits
2. The stroke limit control device is composed of a stop energy head and a micro switch
3. Specifications
·Diameter of depicted figures: 0-10.5mm
·Effective area of worktable: 50×100mm
·There are four weighted weights, one for 500 grams, two for 200 grams, and one for 100 grams
·The needle is made of steel stylus and can be replaced after 5 uses
·The effective stroke of the worktable is not less than 80mm
