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

Sagger protective layer for producing vanadium nitrogen alloy and preparation method thereof

A technology of vanadium-nitrogen alloy and protective layer is applied in the field of vanadium-nitrogen alloy sintering device, which can solve the problem that the service life cannot be effectively extended in essence.

Active Publication Date: 2020-11-06
江西天启新材料集团有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned public documents are all based on the improvement of the structure of the box body design to make it easy to replace and maintain. Since its material has not changed, the contact surface and contact path between the oxidizing and corrosive gas and the box body have not changed, resulting in an unsatisfactory service life. Effectively extended in essence, needs to be improved

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The raw material analysis results are as follows: Mullite: Al 2 o 3 71.05wt%, SiO 2 26.41 wt%, true specific gravity 3.06, apparent porosity 3.35%, mullite phase 97.78wt%. Silicon carbide: SiC 97.90wt%.

[0031] Raw materials such as mullite, silicon carbide, sialon ceramic powder, metal aluminum powder, and metal silicon powder are sieved with a 200-mesh sieve, and the under-sieve is taken for later use. The above raw materials are 85wt% of mullite, 12wt% of silicon carbide, 2.0wt% of sialon ceramic powder, 0.5wt% of metal aluminum powder, and 0.5wt% of metal silicon powder according to the mass percentage of 100 kg. The solid powder material of the protective layer of the sintered box body is uniformly obtained. The organic solvent was obtained by mixing liquid phenolic resin and pure alcohol at a weight ratio of 90 wt%: 10 wt%. Add 50 kg of the prepared organic solvent to the above-mentioned 100 kg of prepared powder, stir evenly, and put it into a sealed plas...

Embodiment 2

[0034]The raw material analysis results are as follows: Mullite: Al 2 o 3 71.63wt%, SiO 2 26.05 wt%, true specific gravity 3.02, apparent porosity 3.38%, mullite phase 97.5wt%. Silicon carbide: SiC 97.0wt%.

[0035] Raw materials such as mullite, silicon carbide, sialon ceramic powder, metal aluminum powder, and metal silicon powder are sieved with a 200-mesh sieve, and the under-sieve is taken for later use. The above raw materials are 70wt% of mullite, 22wt% of silicon carbide, 5.0wt% of sialon ceramic powder, 1.5wt% of metal aluminum powder, and 1.5wt% of metal silicon powder according to the mass percentage of 100 kg. Mix and stir the prepared raw materials The solid powder material of the protective layer of the sintered box body is uniformly obtained. The organic solvent was prepared by mixing liquid phenolic resin and pure alcohol at a weight ratio of 80 wt%: 20 wt%. Add 40 kg of the prepared organic solvent to the above-mentioned 100 kg of prepared powder, stir ...

Embodiment 3

[0038] The raw material analysis results are as follows: Mullite: Al 2 o 3 71.55wt%, SiO 2 26.6 wt%, true specific gravity 3.03, apparent porosity 3.62%, mullite phase 97.53wt%. Silicon carbide: SiC 98.0wt%.

[0039] Raw materials such as mullite, silicon carbide, sialon ceramic powder, metal aluminum powder, and metal silicon powder are sieved with a 200-mesh sieve, and the under-sieve is taken for later use. The above raw materials are 75wt% of mullite, 18wt% of silicon carbide, 4.0wt% of sialon ceramic powder, 2.0wt% of metal aluminum powder, and 2.0wt% of metal silicon powder according to the mass percentage of 100 kg, and the prepared raw materials are mixed and stirred The solid powder material of the protective layer of the sintered box body is uniformly obtained. The organic solvent was obtained by mixing liquid phenolic resin and pure alcohol at a weight ratio of 70 wt%: 30 wt%. Add 30 kg of the prepared organic solvent to the above-mentioned 100 kg of prepared...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a protection layer of a sagger for producing vanadium-nitrogen alloys and a preparation method thereof. The protection layer is uniformly sprayed on the surfaces of inner and outer layers of the sagger for sintering vanadium-nitrogen alloys and is prepared by mixing and stirring solid powder and an organic solvent. The solid powder is prepared from the following components in percentage by weight: 70-85wt% of mullite, 10-22wt% of silicon carbide, 2.0-5.0wt% of sialon ceramic powder, 0.5-2.0wt% of metal aluminum powder and 0.5-2.0wt% of metal silicon powder. The organic solvent is prepared from the following components in percentage by weight: 70-90wt% of liquid phenolic resin and 10-30wt% of pure alcohol. The weight percentage ratio of the solid powder to the organic solvent is 100wt% to (30-50wt%). The service life of the produced sagger for producing vanadium-nitrogen alloys is prolonged by an average of 28.6%; the cost is reduced by an average of 18.82%.

Description

technical field [0001] The invention relates to the field of vanadium-nitrogen alloy sintering devices, in particular to a sintering sagger for producing vanadium-nitrogen alloy. Background technique [0002] As a new type of steel additive, vanadium nitrogen alloy can improve the comprehensive mechanical properties of steel such as strength, toughness, ductility and thermal fatigue resistance, and make the steel have good weldability. Under the same strength, the addition of vanadium-nitrogen alloy can save 30% to 40% of vanadium compared with the addition of vanadium. As the country mandates that the strength of steel bars used in construction must be above HRB400, the market demand for vanadium nitrogen alloys has grown rapidly. [0003] The production of vanadium-nitrogen alloy is to use a high-pressure ball machine to make vanadium-nitrogen alloy green balls, put the vanadium-nitrogen alloy green balls into a sintered sagger, and then send the box body to a tunnel kiln...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J8/02C04B41/88C04B35/66C04B35/52
CPCC04B35/522C04B35/66C04B41/009C04B41/5155C04B41/88C04B41/5024C04B41/5059C04B41/5067C04B41/5096C04B41/4823C04B41/463C04B41/4535
Inventor 吴永来王家军黄占君
Owner 江西天启新材料集团有限公司