Corrosion-resistant iron-based powder metallurgy valve and preparation method thereof

An iron-based powder metallurgy and corrosion-resistant technology, applied in the field of powder metallurgy, can solve the problems of reduced performance, poor compatibility between non-metallic phase and metal phase, and poor uniformity of structure, so as to increase wettability and cohesiveness, Effect of increasing fatigue strength and toughness, increasing strength and toughness

Inactive Publication Date: 2015-04-29
TONGLING JINGWEI FLUID SCI & TECH
View PDF7 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor compatibility between the non-metallic phase and the metal phase, it is easy to cause segregation of components, poor structure uniformity, uneven strength, mottled appearance, poor runnin...

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 Construction

[0017] A corrosion-resistant iron-based powder metallurgy valve, made of the following raw materials in parts by weight (kg): hafnium boride 4, tantalum nitride 5, polymerized ferrophosphorus powder 1.5, copper powder 2.5, boron stearate 0.6, graphite 0.6 , polycarbosilane 7, titanium powder 13, silicon calcium barium alloy powder 4, silane coupling agent kh-550 0.4, zirconium iron 2.3, 1% sodium carbonate solution, water, zinc stearate 0.5, sodium hypophosphite 2.5, polyethylene glycol 0.3, 2Mol / L copper sulfate solution 23, wetting aid 2.5, iron powder 82;

[0018] The wetting aid is made of the following raw materials in parts by weight (kg): Ga1.5, P1.2, boron oxide 1, titanium 1.5, Mn 1.5, vanadium oxide 0.7, SnO0.4, Bi2O3 0.3, magnesium powder 0.7 , NaF0.1, water 9, polyethylene glycol 0.1; the preparation method is: add polyethylene glycol into water, stir evenly, add magnesium powder, heat to 75°C, stir for 25 minutes, ultrasonically disperse for 3.5 minutes, then add ...

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 discloses a corrosion-resistant iron-based powder metallurgy valve. The corrosion-resistant iron-based powder metallurgy valve is prepared from the following raw materials in parts by weight: 3-5 parts of hafnium boride, 4-6 parts of tantalum nitride, 1-2 parts of polymerization ferrophosphorus powder, 2-3 parts of copper powder, 0.4-0.8 part of boron stearate, 0.5-0.7 part of graphite, 6-9 parts of polycarbosilane, 10-15 parts of titanium powder, 3-5 parts of silicon-calcium-barium ally powder, 0.3-0.5 part of a silane coupling agent kh-550, 2-2.5 parts of ferrozirconium, a proper amount of 1% sodium carbonate solution, a proper amount of water, 0.4-0.6 part of zinc stearate, 2-3 parts of sodium hypophosphite, 0.3-0.4 part of polyethylene glycol, 20-25 parts of 2Mol/L copper sulfate solution, 2-3 parts of a wetting additive and 81-83 parts of iron powder. The valve material is uniform in structure, high in strength and high in tenacity; by adding hafnium boride, tantalum nitride and polymerization ferrophosphorus powder, the heat resistance, the abrasion resistance and the corrosion resistance of the valve are improved.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a corrosion-resistant iron-based powder metallurgy valve 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. [0003] There are many materials used in valves, among which powder metallurgy materials have simple manufacturing process, high manufacturing precision and cost saving, but there are many problems in powder metallurgy. For example, ordinary iron-based powder metallurgy materials have poor heat resistance, corrosion resistance, poor load-bearing capacity, and insufficient mechanical properties such as strength, hardness, and impact resistance. [0004] Metal has the characteristics of thermal shock resistance and good toughness, bu...

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): B22F1/00B22F9/02C22C38/16B22F5/10
Inventor 吴寿涛
Owner TONGLING JINGWEI FLUID SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap