Equivalent Test Method for Rocker Arm and Piston Vibrators

Abstract

The invention relates to an equivalent testing method of a rocker-type vibrating instrument and a piston-type vibrating instrument, belonging to the technical field of superabrasive impact toughness testing. The invention makes two kinds of rocker vibrators and piston vibrators with different principles and different main parameter settings achieve the same test results for the same superhard abrasive, and has the comparability of the test results of the two instruments; it is widely used at home and abroad. The rocker-arm vibrator and the piston-type vibrator can be used side by side, avoiding the irreconcilable dispute that one vibration tester eliminates another vibration tester, or the economic loss caused by one vibration tester being eliminated and waste; unify the test results of domestic and international hard abrasive impact toughness, avoid many trade disputes due to the inconsistency of hard abrasive impact toughness test indicators, and facilitate and support the domestic and international trade development of super hard abrasives.

Description

technical field [0001] The invention belongs to the technical field of impact toughness testing of superhard abrasives, and in particular relates to an equivalent testing method of a rocker arm type and a piston type vibrator. Background technique [0002] Rocker type vibrator and piston type vibrator (also known as impact meter) are two types of test instruments widely used in the field of superabrasives to test the key performance index of superabrasives - impact toughness. Superhard abrasives are mainly abrasives with high hardness such as diamond and cubic boron nitride. The impact toughness of superabrasives is usually expressed by the unbroken rate index. The unbroken rate of superabrasives refers to the proportion of parts that are not impacted and broken after the superabrasives are impacted by a rocker-type vibrator or a piston-type vibrator. In China, most companies use rocker-type vibrometers, and a small number of companies use piston-type vibrometers. In Euro...

AI Technical Summary

Problems solved by technology

[0004] Although both rocker-arm vibrators and piston-type vibrators can test the impact toughness of superabrasives, the same superabrasives are tested by rocker-arm vibrators and piston-type vibrators respectively, and the test results obtained will be The difference is very large, which leads to inconsistent test results of superabrasive impact toughness in the domestic and international hard abrasive industries. Due to the use of different types of test equipment by different manufacturers, the product performance indicators provided are not comparable.

Some manufacturers have high unbroken rate indicators, but product performance is not necessarily high; some manufacturers have low unbroken rate indicators, but product performance is not necessarily bad

The two vibration testers are widely used but the test results are inconsistent, so that there is no unified performance index for the purchase and delivery of superabrasive products, which affects the domestic and international trade of superabrasives, and also brings many trade disputes

Images