Unlock instant, AI-driven research and patent intelligence for your innovation.

Nitriding kiln for ceramic pump

A nitriding furnace, ceramic pump technology, applied in the direction of furnace, furnace cooling, furnace lining, etc., can solve problems such as poor firing quality

Inactive Publication Date: 2021-02-23
HANJIANG HONGYUAN XIANGYANG SILICON CARBIDE SPECIAL CERAMICS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a nitriding furnace for ceramic pumps, aiming to solve the problem of poor firing quality of products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nitriding kiln for ceramic pump
  • Nitriding kiln for ceramic pump
  • Nitriding kiln for ceramic pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A nitriding furnace for ceramic pumps such as Figure 1 to Figure 5As shown, it includes a furnace body 1, a kiln car, a bracket 2, and a lifting cylinder 3 arranged on the bracket 2. The furnace body 1 includes a shell portion 1a with an opening downward and a cover shape and a shell portion 1a located on the shell portion 1a. The inner cavity and the refractory part 1b matching the shape of the outer shell part 1a, the bottom of the refractory part 1b is connected to the bottom of the outer shell part 1a, the cross section of the outer shell part 1a is circular, and the refractory A plurality of electric heating elements 4 are vertically arranged on the inner side wall periphery of the part 1b, and there is a set distance between the refractory part 1b and the outer shell part 1a. In this embodiment, the set distance is preferably 15cm, and it can also be Other sizes are selected according to actual conditions, and the cooling pipe 5 is made of stainless steel or copp...

Embodiment 2

[0041] The difference from Embodiment 1 is that the kiln car includes support wheels 17 and a rectangular hard support plate 18, and the upper middle part of the hard support plate 18 is provided with a The matching lightweight corrosion-resistant brick layer 19 and the ceramic layer 20 above the lightweight corrosion-resistant brick layer 19 are both circular. After the shell part 1a descends, both the lightweight corrosion-resistant brick layer 19 and the ceramic layer 20 can be received in the refractory part 1b, and there is a small gap between the inner wall of the refractory part 1b, which is preferably 1cm in this embodiment, and also Lightweight refractory brick layers 19 and ceramic layers 20 of other diameters can be set according to actual conditions; in this way, the outer shell part 1a can be sealed with the hard support plate 18, and the lightweight refractory brick layers 19 and ceramic layers 20 can also be Normal high temperature tolerance.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of industrial kilns, and discloses a nitriding kiln for a ceramic pump. The nitriding kiln comprises a kiln body, a kiln car, a bracket and a lifting cylinder. The kiln body comprises a shell part and a refractory part, a plurality of electric heating pieces are vertically arranged on the periphery of the inner side wall of the refractory part, a cooling pipe is arranged between the refractory part and the shell part, the two ends of the cooling pipe penetrate out of the shell part, a vacuumizing pipe, an air inlet pipe, an air outlet pipe and a safety valve are arranged respectively in a manner of sequentially penetrating through the shell part and the refractory part, and high-temperature-resistant valves are arranged on the vacuumizing pipe,the air inlet pipe and the air outlet pipe respectively. The lifting cylinder comprises a lifting piston rod, and the bottom end of the lifting piston rod is fixedly connected with the shell part. Thetop of the kiln car is in a closed plane shape, and the projection of the shell part in the vertical direction can be located in the projection of the top of the kiln car in the vertical direction bymoving the kiln car. An annular high-temperature-resistant sealing ring is arranged on the periphery of the bottom end of the shell part. The nitriding kiln can improve the firing quality of a product.

Description

technical field [0001] The invention relates to the technical field of industrial furnaces, in particular to a nitriding furnace used for ceramic pumps. Background technique [0002] Silicon nitride ceramic is an inorganic material ceramic that does not shrink when sintered. Silicon nitride is very strong, especially hot-pressed silicon nitride, which is one of the hardest substances in the world. It has high strength, low density, high temperature resistance and other properties. Si 3 N 4 Ceramic is a covalent bond compound, the basic structural unit is [SiN 4 ] tetrahedron, the silicon atom is located in the center of the tetrahedron, and there are four nitrogen atoms around it, which are respectively located at the four vertices of the tetrahedron, and then in the form of every three tetrahedrons sharing one atom, a continuous and Solid network structure. [0003] At present, some manufacturers choose silicon nitride combined with silicon carbide ceramic materials t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F27B17/00F27D1/00F27D3/00F27D3/12F27D7/02F27D7/06F27D9/00F27D11/02
CPCF27B17/0041F27D1/0009F27D3/00F27D3/123F27D7/02F27D7/06F27D9/00F27D11/02F27D2007/063F27D2007/066F27D2009/0013
Inventor 李秋南王惠民黄涛夏志强吴急涛
Owner HANJIANG HONGYUAN XIANGYANG SILICON CARBIDE SPECIAL CERAMICS