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Additive manufacturing method and preparation method and device of cored wires used by additive manufacturing method

A technology of additive manufacturing and powder core wire, applied in the field of additive manufacturing, can solve problems such as difficult to achieve continuous and precise changes in composition, single alloy composition, etc., to achieve the effects of improving composition editing accuracy, avoiding process restrictions, and retaining flexibility

Active Publication Date: 2020-12-22
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art. The purpose of the present invention is to provide an additive manufacturing method and its preparation method and device using powder core wire, and realize the alloying of metal parts through the change of powder core wire composition. The precise point-to-point control of the composition solves the problems in the prior art that the alloy composition is single or it is difficult to achieve continuous and precise change of composition

Method used

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  • Additive manufacturing method and preparation method and device of cored wires used by additive manufacturing method
  • Additive manufacturing method and preparation method and device of cored wires used by additive manufacturing method
  • Additive manufacturing method and preparation method and device of cored wires used by additive manufacturing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] Such as Figure 1-Figure 3 shown. according to figure 1 , for a given component set Q={x, y, z, C}, it is composed of components A and B intervals, where the functional relationship between components and positions is:

[0087]

[0088] according to figure 1 Planning 3D Forming Paths

[0089] P 3

[0090] ={(1,1,0,C A )...(5,1,0,C A ),(5,2,0,C B )...(1,2,0,C B ),(1,3,0,C A )...(5,3,0,C A ),(5,4,0,C B )...(1,4,0,C B )(1,5,0,C A )...(5,5,0,C A );(1,1,1,C A )...(5,1,1,C A ),(5,2,1,C B )...(1,2,1,C B ),(1,3,1,C A )...(5,3,1,C A ),(5,4,1,C B )...(1,4,1,C B )(1,5,1,C A )...(5,5,1,C A );...}.

[0091] Through the coordinate transformation law, the three-dimensional forming path P in this example can be 3 ={x,y,C} is transformed into a one-dimensional shaping path P 1 =

[0092] {d,C}, where so

[0093] P 1 ={(1,C A ),(2,C B ),(3,C A )…(25,C A );(26,CA )…} (13)

[0094] Similarly, according to this rule, the alloy composition function C(x...

Embodiment 2

[0105] In a typical implementation of this application, such as Figure 2-Figure 4 shown. according to Figure 4 , for a given part composition set Q={ρ,θ,z,C}, which is composed of components A and B intervals, where the components And, the forming speed is

[0106] Further, plan the 3D forming path And according to the coordinate transformation law, the three-dimensional forming path P 3 {ρ,θ,C} into a one-dimensional shaped path

[0107] Similarly, according to this rule, the three-dimensional alloy composition function can be transformed into a one-dimensional alloy composition function Set the wire feed speed to Where l is the length of the powder core wire. Among them, the one-dimensional forming path distance d and the powder core wire length l satisfy the relationship: (in this example set ). Therefore, combining the above formulas, we can get

[0108] And, add a redundant segment with a length of a (in this example, a=2.3) and a ...

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Abstract

The invention further discloses an additive manufacturing method and a preparation method and device of cored wires used by the additive manufacturing method. The cored wire is composed of a metal sheath and core powder, wherein the core powder is formed by mixing different powder components according to any proportion, so that finally chemical components can be changed at will. The change flexibility of the chemical components of a powder mixing method is reserved, and uncontrollable influence factors in a powder conveying process in a multi-way powder feeding technology and process limitation of a multi-way wire feeding technology are avoided. Therefore, a metal additive manufacturing technology with randomly changed components is realized; and by using the cored wire for additive manufacturing, multi-component 3D printing of a three-dimensional geometric structure and alloy components of a part can be achieved.

Description

【Technical field】 [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to an additive manufacturing method and a preparation method and device using powder core wire. 【Background technique】 [0002] Additive manufacturing technology uses lasers, electric arcs, plasma arcs, and electron beams as heat sources to melt and deposit metal powders / core wires layer by layer to form high-performance metal parts with the required geometric structure. Arbitrary, short cycle and other manufacturing features. At the same time, this technology is also a low energy consumption, sustainable green manufacturing technology. In particular, since additive manufacturing technology is not limited by the geometric structure of parts, it has greatly promoted innovative design and empowered the development of various industries. [0003] At present, under the advantage of manufacturing any three-dimensional structure (3D), adding the dimension of...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y10/00B33Y30/00B33Y40/00
CPCB22F3/003B33Y10/00B33Y30/00B33Y40/00Y02P10/25
Inventor 王理林丁汉林林鑫黄卫东
Owner NORTHWESTERN POLYTECHNICAL UNIV
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