Piezoelectric ultrasonic salt-bath heating nitriding device

Abstract

The invention provides a piezoelectric ultrasonic salt-bath heating nitriding device, which comprises a shell provided with a heat insulation layer, a salt bath tank in the shell, a heating plate, a wiring support column and a top cover, and is characterized in that: two sets of piezoelectric ultrasonic devices are symmetrically arranged on the shell; each one of the piezoelectric ultrasonic device comprises an energy-collecting rod, an oscillating plate, an amplitude transformer, an energy transducer and a cooling box; the oscillating plate and the energy-collecting rod form an integral part; the oscillating plate is arranged in the salt bath tank and is connected with the amplitude transformer through threads; and a wave node of the amplitude transformer is arranged on the shell by welding. The piezoelectric ultrasonic salt-bath heating nitriding device has the advantages of compact and simple structure, improved nitriding rate and efficiency, safe and reliable working, high economical efficiency and the like; and in nitriding process production, the piezoelectric ultrasonic salt-bath heating nitriding device can efficiently perform chemical heat treatment on various metallic materials, and can be widely applied in the field of machine building.

Description

technical field [0001] The invention belongs to the technical field of metal heat treatment, and mainly relates to a piezoelectric ultrasonic salt bath heating furnace device for nitriding. Background technique [0002] Nitriding to the surface of metal parts can increase the nitrogen concentration of the surface, and its purpose is to improve the hardness, wear resistance, corrosion resistance and fatigue limit of the surface of the parts. Metal nitriding products are more than one million tons per year, and nitriding is directly related to the internal quality and service life of the product, especially the key parts of mechanical products. The main method of metal nitriding is salt bath nitriding, which has many unique advantages and is in a dominant position. [0003] At present, the salt bath nitriding device can be divided into two types: internal heat type and external heat type. Its main structure is composed of shell, heating device, insulation layer, and salt bath...

AI Technical Summary

Problems solved by technology

As a result, the nitriding device consumes a lot of energy, takes a long time, and pollutes the environment seriously, which is extremely incompatible with modern industry. The purpose of this project research is to invent a new nitriding device, changing the current nitriding device that relies solely on heat ( temperature) diffusion to nitriding the metal surface

Images