Method to test the castor castor manufacturers
Method to test the castor castor manufacturers resistance performance test when testing the performance castor should keep dry and clean, place the caster in a piece of insulation on the metal plate with the ground, keep the wheel edge in contact with the metal plate, on the caster wheel load of 5% to 10% of the nominal load. With the insulation resistance tester ( Nominal open circuit voltage of 500 v, determination of the resistance value of fluctuation within 10% and no more than 3 w) in the wastage of the products The electric resistance between castor and metal plate. In type conductive castor, resistance is not more than 104, and the resistance of the antistatic caster should be between 105 and 107. Impact test any goods transportation, use, save will crash vibration but the product may be produced in the state such as adverse even not be able to use a certain period of time, type furniture with its big, weight and other characteristics are often vulnerable to the impact, and smooth at the bottom to determine whether furniture placed casters are more should have a good shock resistance. Reciprocating wear testing castor as the mainstay of furniture to move to and fro, wear aging is inevitable, the length of the reciprocating wear life directly affects the normal use of furniture products, there may be some once after blow-down will not easily move heavy furniture, but the swivel chair casters most frequently used but have to accept the test of rolling back and forth all day long. Castor reciprocating wear test to simulate the casters in daily use the actual rolling, the two points with and without obstacles obstacles test test, the trundle put to the test platform is installed correctly, each test castor load of 300 n, test frequency is ( 6 - 8) Times/min, a test cycle including 1 m and 1 m back to reverse a movement back and forth, with an obstacle in ( Metal obstacles, 50 mm wide, 2 mm - 3毫米) Test platform to test 5000 times ( H castor) Or 30000 times ( W type casters) 。 At the levels of no obstacle test bench (70000 times H castor) Or 20000 times ( W type casters) 。 In the process of test is not allowed to have from castor or other part, at the end of the test each castor should be able to drive its normal function, test after the completion of the caster roll, circuition or brake function should not be damaged. Static load test castor should always be steady running on the ground, but it is almost a state of pure theory. On the uneven surface, or in a threshold, orbit and potholes, castor will brief off the ground. So when they suddenly overloaded or four casters in three only contact with the ground, must carry the entire load of furniture.