Heat penetration tester

Abstract

The invention discloses a heat penetration tester, which comprises a testing jig and an electrical appliance control box, wherein the testing jig comprises a lever arranged on the upper end of an upright post; one side of the lever is connected with a sliding pole, and a sliding seat is sleeved on the sliding pole; the bottom end of the sliding pole is connected with an impact head; an induction coil is winded on the outside of the impact head, and a micro thermocouple is arranged in the impact head; a test worktable for fixing a product to be tested is arranged below the impact head, and a temperature sensor is arranged in the test worktable; the underside of the other side of the lever is connected with an iron block, and the underside of the iron block is opposite to a micro electromagnet; and the electrical appliance control box is fixed on the upright pole, and a control module, a high-frequency current generator, a temperature module and a delay module are arranged in the electrical appliance control box. Due to the electromagnetic heating technique adopted by the invention, the volume of the impact head is small and heating is quick, so test waiting time is reduced; in addition, the impact head has a small test power and is environmentally-friendly, energy-saving and long in service life.

Description

technical field [0001] The invention relates to a tester for protective glasses, protective face shields, safety helmets, etc., in particular to a heat penetration tester. Background technique [0002] At present, the traditional method for testing the heat penetration resistance of protective equipment on the market is: use an impact head heated to the specified temperature to impact the test sample with a certain impact force, so as to realize the detection of penetration force and determine the test sample resistance. The degree of heat and penetration achieved. [0003] The above method mainly has the following disadvantages: 1. The impact head is huge; 2. It takes a long time to heat the heating element on the impact head; 3. The temperature of the heating element cannot reach the 650°C required in the test standard; 4. The heating element of the electric heating wire Easily damaged at high temperatures. [0004] The heating technology of the impact head in the tester...

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Problems solved by technology

[0003] The above method mainly has the following disadvantages: 1. The impact head is huge; 2. It takes a long time to heat the heating element on the impact head; 3. The temperature of the heating element cannot reach the 650°C required in the test standard; 4. The heating element of the electric heating wire vulnerable to damage at high temperatures

[0004] The heating technology of the impact head in the tester is the key technology. In the prior art, the electric heating wire is used for heating, that is, the electric heating wire heating element is installed outside the impact test head, and the power frequency current generates heat through the electric heating wire, and the heat is conducted through heat transfer. For the impact head, so the impact head in the prior art is bulky and bulky, the heating time is long, and the heating element of the heating wire is easily damaged at high temperature

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