Molten material interfaces for magnetohydrodynamic metal manufacturing
US-2017252829-A1 · Sep 7, 2017 · US
The jetting performance of molten metal alloys by controlling the concentration of key alloying elements
US2022258240A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022258240-A1 |
| Application number | US-202217670395-A |
| Country | US |
| Kind code | A1 |
| Filing date | Feb 11, 2022 |
| Priority date | Feb 12, 2021 |
| Publication date | Aug 18, 2022 |
| Grant date | — |
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Abstract
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A method for improving part quality in additive manufacturing involving jetting liquid metal. Limiting the amounts of magnesium and zinc in a meniscus material to below predetermined thresholds improves jetting quality. Further, ensuring an amount of Strontium is above a predetermined threshold further improves jetting of the liquid metal.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for improving part quality in additive manufacturing, comprising the steps of: supplying a liquid metal alloy feedstock to a nozzle; forming at a face of the nozzle a meniscus of liquid meniscus material wherein the meniscus material contains greater than or equal to 10 ppmw Strontium; and jetting a pattern of build material from the nozzle. 2 . The method of claim 1 wherein the metal alloy feedstock includes a plurality of feedstock inputs combined to form the meniscus material. 3 . The method of claim 1 wherein the meniscus material contains greater than or equal to 50 ppmw Strontium. 4 . The method of claim 1 wherein the meniscus material contains greater than or equal to 100 ppmw Strontium. 5 . The method of claim 1 wherein the meniscus wets to a nozzle stem face. 6 . The method of claim 1 wherein the nozzle has a non-wetted surface surrounding a discharge orifice. 7 . The method of claim 1 wherein at least a portion of a throat material contains greater than or equal to 10 ppmw Strontium. 8 . The method of claim 1 , further comprising: wherein the meniscus material contains less than or equal to 0.5W % Magnesium and less than or equal to 1000 ppmw zinc. 9 . A method for improving part quality in additive manufacturing, comprising the steps of: supplying a liquid metal alloy feedstock to a nozzle; forming at a face of the nozzle a meniscus of liquid meniscus material wherein the meniscus material contains less than or equal to 0.5W % Magnesium; jetting a pattern of build material from the nozzle. 10 . The method of claim 9 wherein the metal alloy feedstock includes a plurality of feedstock inputs combined to form the meniscus material. 11 . The method of claim 9 wherein the meniscus material contains less than or equal to 0.1 Wt % Magnesium. 12 . The method of claim 9 wherein the meniscus material contains less than or equal to 100 ppmw Magnesium. 13 . The method of claim 9 wherein the meniscus wets to a nozzle stem face. 14 . The method of claim 9 wherein the nozzle has a non-wetted surface surrounding a discharge orifice. 15 . A method for improving part quality in additive manufacturing, comprising the steps of: supplying a liquid metal alloy feedstock to a nozzle; forming at a face of the nozzle a meniscus of liquid meniscus material wherein the meniscus material contains less than or equal to 1000 ppmw zinc; jetting a pattern of build material from the nozzle. 16 . The method of claim 15 wherein the metal alloy feedstock includes a plurality of feedstock inputs feeds combined to form the meniscus material. 17 . The method of claim 15 wherein the meniscus material contains less than or equal to 100 ppmw Zinc. 18 . The method of claim 15 wherein the meniscus wets to a nozzle stem face. 19 . The method of claim 15 wherein the nozzle has a non-wetted surface surrounding a discharge orifice. 20 . A feedstock for additive manufacturing, comprising: an aluminum alloy containing greater than or equal to 10 ppmw Strontium. 21 . The feedstock of claim 20 wherein the aluminum alloy contains less than or equal to 0.5W % Magnesium. 22 . The feedstock of claim 20 wherein the aluminum alloy contains less than or equal to 1000 ppmw zinc.
Assignees
Inventors
Classifications
Nozzles · CPC title
- B22F10/22Primary
Direct deposition of molten metal · CPC title
Materials specially adapted for additive manufacturing · CPC title
- B22D23/003Primary
Moulding by spraying metal on a surface · CPC title
with magnesium as the next major constituent · CPC title
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Frequently asked questions
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- What does patent US2022258240A1 cover?
- A method for improving part quality in additive manufacturing involving jetting liquid metal. Limiting the amounts of magnesium and zinc in a meniscus material to below predetermined thresholds improves jetting quality. Further, ensuring an amount of Strontium is above a predetermined threshold further improves jetting of the liquid metal.
- Who is the assignee on this patent?
- Desktop Metal Inc
- What technology area does this patent fall under?
- Primary CPC classification B22F10/22. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Aug 18 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).