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Method for preparing diffusion self-lubricating cermet sintered body with vanadium titanomagnetite

A technology of vanadium-titanium magnetite and vanadium-titanium magnetite concentrate, applied in metal processing equipment, transportation and packaging, etc., can solve the problems of unfavorable popularization and application, increase of preparation cost, etc., and achieve simple and easy preparation process and good adaptability , the effect of a wide range of application prospects

Active Publication Date: 2020-06-23
SICHUAN ENG TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the preparation of self-lubricating metal-ceramic composite materials with high oxidation resistance, high temperature resistance and high wear resistance is mainly achieved by using fine chemical powder as raw material through mixing, pressing, sintering, impregnation and other processes. Whether it is From the selection of raw materials and the selection of preparation process, the preparation cost will be increased, which is not conducive to popularization and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present invention comprises the following sequential steps:

[0036] Step 1. select the titanium magnetite concentrate powder with higher iron content in the vanadium-titanium magnetite with conventional beneficiation measures;

[0037] Weigh vanadium-titanium magnetite concentrate powder and graphite powder at a ratio of 100:20.563, wherein the particle size range of vanadium-titanium magnetite concentrate powder is 200-300 mesh, and the particle size range of graphite powder is 200-300 mesh;

[0038] Put the weighed vanadium-titanium magnetite concentrate powder and graphite powder into a ball mill. The ball-to-material ratio in the ball mill is about 2:1; the ball milling speed is about 200rpm, and the ball milling time is about 2h. Vanadium-titanium magnetite concentrate powder and graphite powder are mixed evenly;

[0039] Step 2. Put the mixture into a vacuum sintering furnace; the vacuum sintering furnace conducts vacuum carbon thermal reaction at a heating ...

Embodiment 2

[0051] The present invention comprises the following sequential steps:

[0052] Step 1. select the titanium magnetite concentrate powder with higher iron content in the vanadium-titanium magnetite with conventional beneficiation measures;

[0053] Weigh vanadium-titanium magnetite concentrate powder and graphite powder at a ratio of 100:20.563, wherein the particle size range of vanadium-titanium magnetite concentrate powder is 200-300 mesh, and the particle size range of graphite powder is 200-300 mesh;

[0054] Put the weighed vanadium-titanium magnetite concentrate powder and graphite powder into the ball mill. The ball-to-material ratio in the ball mill is about 3:1; the milling speed is about 300rpm, and the ball milling time is about 3h. Vanadium-titanium magnetite concentrate powder and graphite powder are mixed evenly;

[0055] Step 2. Put the mixture into the vacuum sintering furnace; the vacuum sintering furnace conducts vacuum carbon thermal reaction at a heating r...

Embodiment 3

[0067] The present invention comprises the following sequential steps:

[0068] Step 1. select the titanium magnetite concentrate powder with higher iron content in the vanadium-titanium magnetite with conventional beneficiation measures;

[0069] Weigh vanadium-titanium magnetite concentrate powder and graphite powder at a ratio of 100:20.563, wherein the particle size range of vanadium-titanium magnetite concentrate powder is 200-300 mesh, and the particle size range of graphite powder is 200-300 mesh;

[0070] Put the vanadium-titanium magnetite concentrate powder and graphite powder into the ball mill, the ball-to-material ratio in the ball mill is about 4:1; the milling speed is about 400rpm, and the ball milling time is about 2h. Vanadium-titanium magnetite concentrate powder and graphite powder are mixed evenly;

[0071] Step 2. Put the mixture into the vacuum sintering furnace; the vacuum sintering furnace conducts vacuum carbon thermal reaction at a heating rate of a...

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Abstract

The invention discloses a method for preparing a diffused self-lubricating cermet sintered body from vanadium-titanium magnetite, which comprises the following sequential steps: Step 1. Weighing vanadium-titanium magnetite concentrate powder and graphite powder at a ratio of 100:20.563; Mix them uniformly by ball milling; step 2. put the mixture into a vacuum sintering furnace to obtain pre-reaction powder; step 3. ball mill the pre-reaction powder; step 4. weigh the pre-reaction powder and Tungsten-molybdenum alloy powder; and weigh the inorganic pore-forming agent TiH according to the formula 2 , Inorganic pore forming agent CaCO 3 and zinc stearate powder; step 5. the material ball milling that weighs in step 4 is mixed; The compact is put into a vacuum sintering furnace to obtain a diffusion self-lubricating cermet wear-resistant sintered body. The invention is simple, easy to implement and good in economy, and opens up another reliable application of vanadium-titanium magnetite.

Description

technical field [0001] The invention relates to a composite material, in particular to a method for preparing a diffusion self-lubricating cermet wear-resistant sintered body with vanadium-titanium magnetite. Background technique [0002] Vanadium-titanium magnetite is a rich geological resource in my country. The vanadium-titanium magnetite powder produced by it contains not only iron, titanium and vanadium, but also high chromium, cobalt, nickel, platinum group and scandium, etc. It has a variety of ingredients and has high utilization value. [0003] At present, the more common utilization technology of vanadium-titanium magnetite is to smelt pig iron in blast furnace. However, when vanadium-titanium magnetite is used to prepare pig iron, the associated oxides in the vanadium-titanium magnetite will be removed as impurities during the pig iron smelting process, so that the associated oxides will be treated as waste slag. This not only causes a lot of waste of other assoc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/02B22F1/00B22F3/10B22F3/11
CPCC22C33/0228B22F3/1007B22F3/1035B22F3/1134B22F2999/00B22F1/102B22F2201/20
Inventor 张光明李登万章友谊蔺虹宾
Owner SICHUAN ENG TECHN COLLEGE