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Arc-welding material additive manufacturing method for stainless steel part

A technology of additive manufacturing and stainless steel, which is applied in the field of additive manufacturing, can solve problems affecting the performance of parts, temperature rise, etc., and achieve the effect of overcoming coarse and uneven grains and fine structures

Inactive Publication Date: 2016-09-07
XIAN BRIGHT ADDTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for arc welding additive manufacturing of stainless steel parts, which solves the problem that the continuous rise of temperature in the existing arc welding additive manufacturing method affects the performance of parts

Method used

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  • Arc-welding material additive manufacturing method for stainless steel part

Examples

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Comparison scheme
Effect test

Embodiment 1

[0028] Taking the 308 stainless steel part whose forming size is 80mm×40mm×30mm as an example, the method of the present invention is described in detail:

[0029] (1) According to the structure of 308 stainless steel parts, establish a three-dimensional model of the part, use the subdivision software to perform layer processing on the three-dimensional model, convert the three-dimensional data of the part into two-dimensional data, according to the arc starting position and arc extinguishing between layers Based on the principle of position staggering, the scanning path planning is carried out for each layer of the part to obtain the information of the part layer.

[0030] (2) Choose 308 stainless steel wire as the forming material, the wire diameter is Φ1.2mm, choose ordinary stainless steel as the base material, set the arc welding current to 105A, arc welding voltage to 17V, wire feeding speed to 6.5m / min, shielding gas The flow rate is 15L / min, the scanning speed is 0.5m / ...

Embodiment 2

[0035] It is 20mm with forming diameter, and the 304 stainless steel cylinder part of height is 40mm is example the method of the present invention is described in detail:

[0036] (1) According to the structure of the 304 stainless steel cylinder part, a three-dimensional model of the part is established, and the three-dimensional model is layered by using the subdivision software, and the three-dimensional data of the part is converted into two-dimensional data. The principle of staggering the arc extinguishing position, planning the scanning path for each layer of the part, and obtaining the information of each layer of the part;

[0037] (2) Choose 304 stainless steel wire as the forming material, the wire diameter is Φ1.5mm, choose ordinary stainless steel as the base material, set the arc welding current to 90A, the arc welding voltage to 18V, the wire feeding speed to 4m / min, and the shielding gas flow 20L / min, scanning speed 0.3m / min, protective gas 97.5% Ar and 2.5% C...

Embodiment 3

[0042] Taking the 316 stainless steel part whose forming size is 40mm×40mm×40mm as an example, the method of the present invention is described in detail:

[0043] (1) According to the structure of 316 stainless steel parts, a three-dimensional model of the part is established, and the three-dimensional model is layered by using the subdivision software, and the three-dimensional data of the part is converted into two-dimensional data, according to the arc starting position and arc extinguishing between layers Based on the principle of position staggering, scan path planning is performed on each layer of the part to obtain part layer information;

[0044] (2) Choose 316 stainless steel wire as the forming material, the wire diameter is Φ1.2mm, choose ordinary stainless steel as the base material, set the arc welding current to 120A, the arc welding voltage to 13V, the wire feeding speed to 8m / min, and the shielding gas flow 25L / min, scanning speed 0.7m / min, protective gas 97.5...

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Abstract

The invention discloses an arc-welding material additive manufacturing method for a stainless steel part. The arc-welding material additive manufacturing method for stainless steel part includes the steps that a three-dimension part model is built according to the structure of the stainless steel part, layering treatment is carried out on the three-dimension part with parting software, scanning path planning is carried out on each layer, and information of the layers of the part is obtained; forming technological parameters are determined, specifically, arc welding current is 90-120 A, arc welding voltage is 13-18 V, the wire feeding speed is 4-8 m / min, the flow of protective gas is 15-25 L / min, and the scanning speed is 0.3-0.7 m / min; and the information is input into an arc-welding material additive manufacturing device, and formation of the stainless steel layer is completed step by step and layer by layer according to the sequence from arcing to forming and arc extinction. The stainless steel part prepared through the method meets the requirement, a metallographic structure is free of pores and cracks and tends to a martensitic structure, the texture is fine, and the layers are in metallurgical bonding.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to an arc welding additive manufacturing method for stainless steel parts. Background technique [0002] Additive manufacturing rapid prototyping technology does not require mold processing, can greatly shorten the production cycle, improve production efficiency, and save materials and production costs. The rapid prototyping of metal parts has been favored by researchers in recent years. Now, according to the high-energy beam heat source, it is divided into arc additive manufacturing, laser additive manufacturing, electron beam additive manufacturing and other technologies. The raw materials generally have two forms of metal powder and welding wire. Differences in heat sources lead to differences in additive manufacturing technologies in terms of forming accuracy, deposition efficiency, and sensitivity to complex parts. [0003] Arc welding additive manuf...

Claims

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Application Information

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IPC IPC(8): B23K9/04B23K9/095B23K103/04
CPCB23K9/04B23K9/095B23K2103/04B23K2103/05
Inventor 赵晓明熊嘉锋薛蕾程宝
Owner XIAN BRIGHT ADDTIVE TECH CO LTD
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