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Steel cored wire for arc cladding additive manufacturing and preparation method thereof

A technology of additive manufacturing and electric arc, applied in the field of additive manufacturing, can solve the problems of discontinuous production process, difficult filling, low efficiency, etc., and achieve the effect of uniform powder distribution, good stability and high efficiency

Active Publication Date: 2019-01-04
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the preparation process of this kind of powder core wire material, the powder is in a loose state, which is difficult to fill, and the waste of powder is serious. After filling, the powder distribution is uneven and the efficiency is low. At the same time, the consumption of outer layer metal and powder Inconsistent speeds lead to discontinuity in the production process, seriously affecting shape and controllability in the additive manufacturing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1, cutting the 1mm low carbon steel strip and 15 steel plate into steel strips of different widths for subsequent use;

[0039] Step 2. Powder core preparation: select alloy powders with different components according to different needs, add copper powder as a binder for alloy materials, add different carbon powders to adjust the composition of steel, and evenly mix powder materials with different ratios to obtain a mixture . For example, Fe powder, Ni powder, Cu powder, Co powder, and Cr powder are mixed in equal mole fractions and put into a high-energy ball mill at a speed of 150r / min for 2 hours to obtain alloy powder with uniform composition;

[0040] Step 3, spreading the alloy powder evenly on the matrix steel strip;

[0041] Step 4, pre-sintering the steel strip covered with alloy powder through a crawler sintering furnace;

[0042] Step 5, rolling the pre-sintered strip;

[0043] Step 6, rolling the sintered steel strip into a circle through a plate rol...

Embodiment 2

[0047] Step 1, cutting the 1mm low carbon steel strip 20 steel plate into steel strips of different widths for subsequent use;

[0048] Step 2. Powder core preparation: select alloy powders with different components according to different needs, add copper powder as a binder for alloy materials, add different carbon powders to adjust the composition of steel, and evenly mix powder materials with different ratios to obtain a mixture . For example, Fe powder, Ni powder, Cu powder, Co powder, and Cr powder are mixed in equal mole fractions and put into a high-energy ball mill at a speed of 150r / min for 2 hours to obtain alloy powder with uniform composition;

[0049] Step 3, spreading the alloy powder evenly on the matrix steel strip;

[0050] Step 4, pre-sintering the steel strip covered with alloy powder through a crawler sintering furnace;

[0051] Step 5, rolling the pre-sintered strip;

[0052] Step 6, rolling the sintered steel strip into a circle through a plate rolling...

Embodiment 3

[0056] Step 1. Cut the 1mm medium carbon steel strip 30 steel plate into steel strips of different widths for later use;

[0057] Step 2. Powder core preparation: select alloy powders with different components according to different needs, add copper powder as a binder for alloy materials, add different carbon powders to adjust the composition of steel, and evenly mix powder materials with different ratios to obtain a mixture . For example, Fe powder, Ni powder, Cu powder, Co powder, and Cr powder are mixed in equal mole fractions and put into a high-energy ball mill at a speed of 150r / min for 2 hours to obtain alloy powder with uniform composition;

[0058] Step 3, spreading the alloy powder evenly on the matrix steel strip;

[0059]Step 4, pre-sintering the steel strip covered with alloy powder through a crawler sintering furnace;

[0060] Step 5, rolling the pre-sintered strip;

[0061] Step 6, rolling the sintered steel strip into a circle through a plate rolling machin...

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Abstract

The invention belongs to the technical field of additive manufacturing, and discloses a steel cored wire for arc cladding additive manufacturing and a preparation method thereof. The preparation method comprises the following steps that a core powder material is prepared according to a base material, wherein the base material is a metal material; the core powder material is laid on the base material of which the core powder materials belong to obtain a part to be sintered; the part to be sintered is subjected to liquid phase sintering to obtain a sintered part; and the steel cored wire for arcwelding additive manufacturing is obtained by rolling, winding and drawing of the sintered part. The wire powder prepared by the preparation method has uniform distribution and good stability.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method for arc cladding steel powder core wires for additive manufacturing. Background technique [0002] In recent years, the Wire and Arc Additive Manufacture (WAAM) technology has received more and more attention. This technology uses the arc as the energy beam to manufacture metal solid components by layer-by-layer surfacing welding. This technology It is mainly developed based on TIG, MIG, SAW and other welding technologies. The formed parts are composed of full welds, with uniform chemical composition, high density, good metallurgical bonding performance, and good mechanical properties. The open forming environment has no restrictions on the size of the formed parts, and the forming rate can reach several kg / h. Metal wire is an important raw material in the additive manufacturing process in which the electric arc is used as the heat source. Compared with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K35/40
CPCB23K35/3053B23K35/40
Inventor 李小平王泽雷卫宁卢雅琳王江涛张扬李汶泽陈菊芳
Owner JIANGSU UNIV OF TECH
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