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Nano micrometer modefied wear resistant erosion resistant thermal coated tubular wire

A tubular wire, erosion-resistant technology, applied in coating, fusion spraying, metal material coating process, etc., can solve the problems of easy brittle fracture, peeling, brittleness, unable to resist stress, etc., and achieve flying speed. Fast, powerful effect

Inactive Publication Date: 2006-11-08
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] As far as arc spraying and flame spraying wires are concerned, metal and alloy wires such as: 45CT, 50Ni / Cr, FeCrAl series, etc. have good high temperature corrosion resistance, but the wear resistance is far from meeting the requirements; pure ceramic coatings are high Hardness, high temperature resistance, corrosion resistance and wear resistance, but its brittleness is large, heat insulation, can not resist the stress under impact load, easy to break and peel off

Method used

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  • Nano micrometer modefied wear resistant erosion resistant thermal coated tubular wire
  • Nano micrometer modefied wear resistant erosion resistant thermal coated tubular wire

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Embodiment Construction

[0024] All the tubular wires of the embodiments are produced by the "FCWM50 core wire drawing machine" manufactured by Kunming Heavy Machinery Factory: the selected width is 8-14mm, and the thickness is 0.25-0.5mm high-quality carbon steel strip or nickel-chromium strip. First roll it into a U shape, and then add mixed medicinal powder with a particle size of 40-200 mesh sieves into the U-shaped groove. The filling rate of the medicinal powder (the percentage of the weight of the medicinal powder in the total weight of the welding wire) is 30-35%. Close the U-shaped groove so that the powder is wrapped in it.

[0025] The base material is No. 20 steel. Before spraying, all the base materials are cleaned with acetone with a mass percentage concentration of 99.8%. The particle size is 25 mesh corundum sand and then arc sprayed. The sandblasting pressure is 0.65MPa. The spraying equipment is JZY type arc spraying Machine, spraying process parameters are shown in Table 1.

[0026...

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Abstract

The present invention relates to surface processing material technology, and especially a kind of nanometer modified wear resistant and erosion resistant arc sprayed wire material. The wire material has coating of Fe or Ni, and powdered core comprising high carbon ferrochrome 45-60 wt%, Ni 10-20 wt%, ferrosilicon 4-10 wt%, ferroboron 5-10 wt%, Cr3C2, TiB2 or TiC 10-15 wt%, micron level TiB2 5-15 wt%, nanometer level Al2O3 5-15 wt%, and optional wollastonite 1-3 wt%, ZrO2 2-5 wt% and TiO2 5-15 wt%. The material is used mainly for coating the surface of blower blade, pipe wall in power station boiler, etc. and the coated layer can increase the surface life of the said parts.

Description

technical field [0001] The invention belongs to the field of surface engineering in material processing engineering, and prepares a metal-based ceramic composite wear-resistant and erosion-resistant tubular wire with good performance by adding necessary alloy powder and nano-micron powder modification. It is mainly used in industrial fields such as wear resistance, erosion resistance and high temperature oxidation resistance. Background technique [0002] Wear includes a series of complex physical processes and sometimes chemical processes. The wear forms include: abrasive wear, adhesive wear, corrosion wear, contact fatigue wear and erosion wear. Although the wear and erosion of the material surface occurs gradually, the loss caused is staggering. In the Federal Republic of Germany, more than 10 billion marks are lost due to abrasion every year. In the United States, metal cutting tools consume 40 billion US dollars due to wear and tear. In our country, the cost due to ab...

Claims

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Application Information

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IPC IPC(8): C23C4/04
Inventor 栗卓新方建筠秦颢魏琪蒋建敏贺定勇史耀武
Owner BEIJING UNIV OF TECH
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