Model: 435 Name: 435 hardness tester Price: 0 Brand: Germany ERICHSEN Category: Physical properties of 435 hardness tester instrumentation design: pressure range between 0-20N. Equipment placed on the test surface. So that it rests on two guide wheels, marking wheel locked in a position to press the preset spring pressure on the surface of the spring strength range can be divided into three parts, each containing a replaceable spring. Range 1:0-3 N Sensitivity: 0.1 N Scale 2:0-10 N Sensitivity: 0.5 N Scale 3:0-20 N Sensitivity: 1.0 N Germany 435 hardness tester operation method: Scratch tool is circular, with lock tight means, made of a special plastic or metal. Mounted on the screw, the pressure obtained from a helical spring, the spring can be adjusted to provide a first selection round of testing according to the test requirements, such as scratch resistance test for the plastic wheels, wheel or other special copper metal wheel for a scratch . After tightening the screws, mark the wheel does not rotate, and then set the appropriate pressure springs provide a needed. The instrument is then pressed down on the test surface, the guide wheel contact with the surface. The instrument is moved a distance (a few centimeters), the rolling surface of the wheel, to produce a rapid movement of the scratch, the test result is a spring force in Newtons. This force must be generated hardness sale signs in a visible, but not cracks or scratches. If the purpose of the so-called metal marker effects, the results will be expressed as the surface of a black or gray print timing spring force. Note: Mark wheel will wear after use, after performing the test 100, their position must be changed. To move forward along the periphery of 2mm, previously used tags round the point should be added to a scratch mark. Model: 318 Name: 318 hardness test rod Price: 0 Brand: Germany ERICHSEN Category: German 318 physical properties testing equipment to test the hardness test stick principle: You can set the slider or known estimate by spring pressure. The instrument is placed vertically on the test surface hardness in the procurement to 10 mm / sec speeds draw a straight line of 5 ~ 10 mm. Test head just visible to the naked eye will produce a scratch. If the spring pressure is too high in hardness simple scratches will be very clear, if the spring pressure is too low, there will be no scratches appear. Each slider can be controlled by the locking pressure required in Newtons. This instrument is designed to measure the hardness of the protective coating. Paint, plastic coating hardness can be accurately measured by 318 hardness test stick and record the measurement surface may be flat or curved, and regardless of size. Engraved on the pen scale includes three pressure ranges: 0-3 N (blue mark) 0-10 N (red mark) 0-20 N (yellow marker) and pressure range corresponding to the root of each spring and scale with the corresponding color code. Maintenance and repair of a clean instrument can produce a clean test results. To clean, loosen the nut, remove the tick pen. Use a soft cloth to clean the rods and holes. In addition the instrument without further maintenance. Despite the solid structure hardness test rod 318, but can not stand the test head great momentum. Packing boxes with the instrument provides such a protection. When not in use, the slider should be set at zero in order to protect the accuracy of the spring. Technical data compression spring: spring steel test head: WC test head diameter: 0.5 mm (Opel) 0.75 mm (Bosch) 1.0 mm (in line with ISO 1518 and DEF) Length: 160 mm Diameter: 16 mm Weight, Weight: about 250 g Welcome to consult Nanchang 星枫 Instrument Co., Ltd. (http://www.xingfengyiqi.com), be sure to specify when contact is through the "Business Alliance Member" see, thank you! Contact: Zhengjing