Piezoelectric ultrasonic salt-bath heating nitriding device

A technology of salt bath heating and ultrasonic waves, which is applied in the field of metal heat treatment, can solve the problems of high energy consumption and long time consumption of nitriding devices, and achieve good economy, low energy loss, and the effect of increasing nitriding speed

Inactive Publication Date: 2012-04-25
ZHONGBEI UNIV
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  • Abstract
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  • Claims
  • Application Information

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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

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  • Piezoelectric ultrasonic salt-bath heating nitriding device
  • Piezoelectric ultrasonic salt-bath heating nitriding device

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] figure 1 Shown is a schematic diagram of the piezoelectric ultrasonic salt bath heating nitriding device. The piezoelectric ultrasonic salt bath heating and nitriding device comprises a shell 8 with an insulating layer, a salt bath (groove) 1 in the shell, a heating plate 13, a wiring support column 14, a top cover 15 and a piezoelectric ultrasonic device. The heating plate 13 is at the bottom of the bath 1, links to each other 14 with the wiring support column, and keeps a certain distance with the bottom of the salt bath 1 to prevent heat loss during heating; the wiring support column 14 leads to the outside of the salt bath 1 and can be connected with the power supply. The upper part of the salt bath 1 is provided with a top cover 15 to prevent volatilization of bath salt and loss of heat. Two sets of piezoelectric ultrasonic devices are mounted symmetric...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C8/48
Inventor 祝锡晶成全王江慧刘国东王建青
Owner ZHONGBEI UNIV
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