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Ultrasonic vibration 3D printing device and printing method

An ultrasonic vibration and 3D printing technology, applied in the field of 3D printing, can solve the problems of reducing production efficiency, cracking of parts, increasing production costs, etc., and achieves the effect of high forming dimension accuracy and wide application range

Active Publication Date: 2018-04-13
SUZHOU CHUANGHAO NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The deformation of the parts due to thermal stress during printing is relatively large, which requires an additional margin, which increases production costs and reduces production efficiency;
[0006] (2) The printing structure and performance of the part need to be improved. The TC4 titanium alloy with low thermal conductivity is a basket structure and occasionally accompanied by a small amount of Widmanstatten structure, which is easy to cause cracking when the part is formed or used. There are a small amount of crack defects due to thermal stress when printing materials with high conductivity;
[0007] (3) Some high-temperature alloy parts have poor fusion after printing, and sometimes there are a small amount of micro-cracks inside;

Method used

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  • Ultrasonic vibration 3D printing device and printing method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1, when 3D printing prepares 6061 aluminum alloy parts;

[0033] The temperature of the heating chamber 20 is constant at 500-520°C, the metal plate 30 is a TC4 titanium alloy plate with a side length of 300 mm, the thickness of the titanium nitride coating is 20 microns, the diameter of the ultrasonic vibration head of the ultrasonic vibration mechanism 40 is 30 mm, the frequency is 17 kHz, and the number of printed parts is 60 After the laser forming 6 layers, the printing is suspended, and the ultrasonic vibration mechanism 40 vibrates the printed part 60 with an amplitude of 6 microns.

Embodiment 2

[0034] Embodiment two, when 3D printing prepares TA15 titanium alloy parts;

[0035] The temperature of the heating chamber 20 is constant at 900-920°C. The metal plate 30 is a TC4 titanium alloy plate with a side length of 500 mm and a titanium nitride coating thickness of 60 microns. The ultrasonic vibration head of the ultrasonic vibration mechanism 40 has a diameter of 50 mm and a frequency of 19 kHz. After 15 layers of laser forming, the printing is suspended, and the ultrasonic vibration mechanism 40 vibrates and forges the printed part 60 with an amplitude of 16 microns.

Embodiment 3

[0036] Embodiment three, 3D printing prepares GH4169 superalloy parts;

[0037] The temperature of the heating chamber 20 is constant at 750-770°C. The metal plate 30 is a TC4 titanium alloy plate with a side length of 400 mm and a titanium nitride coating thickness of 50 microns. The ultrasonic vibration head of the ultrasonic vibration mechanism 40 has a diameter of 40 mm and a frequency of 18 kHz. After 10 layers of laser forming, the printing is suspended, and the ultrasonic vibration mechanism 40 vibrates and forges the printed part 60 with an amplitude of 10 microns.

[0038] The present invention also provides an ultrasonic vibration 3D printing method, using the above-mentioned ultrasonic vibration 3D printing device, the method includes the following steps:

[0039] The metal plate clamping mechanism clamps the metal plate on the printed part, and the ultrasonic vibration mechanism vibrates and forges the printed part through the metal plate;

[0040] After the print...

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Abstract

The invention discloses an ultrasonic vibration 3D printing device and a printing method. The ultrasonic vibration 3D printing device comprises a printing base plate; a heating cavity is formed in theprinting base plate; a metal plate is placed in the heating cavity; and a printing head, an ultrasonic vibration mechanism and a metal plate clamping mechanism is arranged in the heating cavity. Theultrasonic vibration 3D printing device has the following beneficial effects: local heating of an upper layer of the printed part is guaranteed and ultrasonic energy transmission is also guaranteed; meanwhile, an anti-adhesion coating on the outer side of the metal plate avoids adhesion to powder during forging; the defects that the printed part is low in size precision at present and is liable tomicrocrack, air hole and loosen and crude and big crystalline grains can be reduced or eliminated, and the properties of the printed part are improved; the material application range is wide, and theultrasonic vibration 3D printing device is not only suitable for TC4 and TA15 titanium alloy, high-temperature alloy and the like with low heat conductivity, but also suitable for copper alloy, aluminum alloy and the like with high heat conductivity; the forming size precision of the printed part is high and the ultrasonic forging amplitude is small, so influence on the existing 3D printing near-net forming is avoided.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to an ultrasonic vibration 3D printing device and a printing method. Background technique [0002] Selective Laser Melting (SLM) in 3D printing, also known as selective laser melting technology, is one of the rapid prototyping technologies and belongs to the new rapid prototyping technology. This technology uses a laser beam with high laser energy density to fully melt powder materials, and can directly form parts with complex structures, and the parts have good mechanical properties, high density, and high precision. The formed parts only need simple polishing and grinding. application. It has the advantages of a wide range of material powders, diversified uses of formed parts, and intuitive and simple forming process. The ability to form parts with complex structures is the biggest advantage of SLM forming over traditional manufacturing. It does not require a series of assist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105B22F3/24B33Y30/00
CPCB22F3/24B33Y30/00B22F10/10B22F10/00B22F12/13B22F10/20Y02P10/25
Inventor 梁贺穆开洪
Owner SUZHOU CHUANGHAO NEW MATERIAL TECH CO LTD