Wear resistant high iron-aluminum based welding wire for build-up welding

A technology for filling welding wire and high-speed rail, applied in welding medium, welding equipment, welding equipment and other directions, can solve the problems of poor processing performance of aluminum alloy, complicated welding process, increase manufacturing cost, etc., to improve wear resistance, welding equipment and other problems. Simple, cost-effective effect

Inactive Publication Date: 2003-06-18
WUHAN UNIV OF TECH
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Problems solved by technology

[0010] The disadvantage is that these high-melting point metals often have no time to diffuse into the aluminum alloy and form coarse inclusions or intermetallic compounds, making the local brittle
In order to solve this problem, they adopted the method of increasing the current (750A), increasing the welding speed, and surfacing welding in stages, which put forward higher requirements for the equipment, and the welding process was more complicated.
There are too many types of alloying elements in the alloy, pseudo-alloy or mixed iron-based welding wire used for filling, which brings difficulties to manufacturing and increases manufacturing costs
Since the processing performance of aluminum alloy will be significantly deteriorated with the addition of high melting point alloy elements

Method used

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  • Wear resistant high iron-aluminum based welding wire for build-up welding
  • Wear resistant high iron-aluminum based welding wire for build-up welding
  • Wear resistant high iron-aluminum based welding wire for build-up welding

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Embodiment Construction

[0034] Gravity casting is adopted, and liquid metal is smelted according to the formula in Table 2, and cast into a metal welding wire mold. Before casting, the metal mold is preheated to 200°C to 250°C.

[0035] Si

[0036] Among them: RE is mixed light rare earth, containing Ce≥50%, and the rest is La and Nd.

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Abstract

An antiwear high-Fe Al-base welding wire for build-up welding contains Si (11-13 wt.%), Cu (0.5-1.5), Mg (0.4-1.0), Mn (0.3-0.9), Fe (3-5), Ni (3-5), RE (0.2-0.4) and Al (rest). Its advantages and high welding performance and hardness of welded seam, good antiwear nature, and low cost.

Description

technical field [0001] The invention relates to a novel aluminum-based wear-resistant surfacing material, in particular to an aluminum-based wear-resistant surfacing material mainly used on the surface of an aluminum-silicon alloy with an argon arc as a heat source. Background technique [0002] Cast aluminum-silicon alloy has become one of the most valued structural materials in the manufacturing industry due to its good comprehensive performance. It is widely used in pistons, cylinder blocks, cylinder heads, brakes, transmissions, joysticks, valves and other control system components. manufacturing. However, due to their working characteristics, such parts often fail due to excessive wear during use. Improving wear resistance is one of the keys to improving the quality and life of such parts. [0003] In the 1980s, countries such as the former Soviet Union and Eastern Europe studied using argon arc, laser, plasma, electron beam, etc. Alloys, pseu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K35/22
Inventor 陈冰泉
Owner WUHAN UNIV OF TECH
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