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Zirconium silicate whisker reinforced valve material and preparation method thereof

A technology of zirconium silicate whiskers and valves, which is applied in the field of powder metallurgy, can solve the problems of poor cold and heat fatigue resistance, mottled appearance, and poor uniformity of the structure, so as to increase fatigue strength and toughness, increase wettability and viscosity Cohesion, increasing strength and toughness effect

Inactive Publication Date: 2015-05-06
TONGLING JINGWEI FLUID SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to poor compatibility between non-metallic phase and metal phase, it is easy to cause segregation of components, poor structure uniformity, uneven strength, mottled appearance, poor running-in performance, poor wear resistance, can not withstand large pressure, severe heat decay, and crack resistance Poor performance, poor resistance to cold and heat fatigue, short service life

Method used

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Embodiment Construction

[0016] A valve material reinforced with zirconium silicate whiskers, made of the following raw materials in parts by weight (kg): nickel powder 3.2, cobalt powder 3.5, moissanite powder 6, palladium oxide 0.6, molybdenum powder 1.5, zirconium silicate whisker 0.7, nickel oxide 1.2, silane coupling agent kh-550 0.3, 1% sodium carbonate solution, water, sodium hypophosphite 3, polyethylene glycol 0.5, 2Mol / L copper sulfate solution 33, wetting aid 2.5 , iron powder 73;

[0017] The wetting aid is made of the following raw materials in parts by weight (kg): K2ZrF6 1.5, V2O5 2.5, nano-silver 1.1, TiN0.4-0.6, MoO3 3.5, nano-mica powder 0.8, water 9, polyethylene glycol 0.1; the preparation method is: add polyethylene glycol into water, stir evenly, add nano-silver, stir for 25 minutes, ultrasonically disperse for 3 minutes, then add other remaining ingredients, stir at 7500 rpm for 14 minutes, ultrasonically disperse for 5 minutes , stirred in an oil bath at 125°C until dry, crush...

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PUM

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Abstract

Provided is a zirconium silicate whisker reinforced valve material. The zirconium silicate whisker reinforced valve material is prepared from, by weight, 2.5-4 parts of nickel powder, 3-4 parts of cobalt powder, 5-8 parts of moissanite power, 0.4-0.7 part of palladium oxide, 1.2-1.8 parts of molybdenum powder, 0.6-0.9 part of zirconium silicate whisker, 1-1.4 parts of nickel oxide, 0.3-0.4 part of silane coupling agent kh-550, appropriate 1% sodium carbonate solution, appropriate water, 2.5-3.5 parts of sodium hypophosphite, 0.4-0.6 part of polyethylene glycol, 30-35 parts of 2 Mol / L copper sulfate solution, 2-3 parts of wetting additives and 70-74 parts of iron powder. According to the zirconium silicate whisker reinforced valve material and a preparation method thereof, the zirconium silicate whisker and the moissanite power are added to the valve material, the impact-resistance strength, the abrasive resistance, the corrosion resistance and the heat-resistant performance of a valve are greatly improved.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a valve material reinforced with zirconium silicate whiskers and a preparation method thereof. Background technique [0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. It is a device that makes or stops the flow of media (liquid, gas, powder) in piping and equipment and controls its flow. When the medium and working conditions passed by the valve are different, there are different requirements for the material of the valve, and there are different requirements for the performance of the material such as temperature resistance, corrosion resistance, and strength. The working pressure of the valve can range from 0.0013MPa to ultra-high pressure of 1000MPa, and the working temperature can range from ultra-low temperature of -270°C to high temperature of 1430°C. [0003] Valve materials can be made of powder metallur...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/16C22C38/12
Inventor 吴寿涛
Owner TONGLING JINGWEI FLUID SCI & TECH
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