公开(公告)号：US20210205880A1

公开(公告)日：2021-07-08

申请号：US16081499

申请日：2018-02-23

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vladek KASPERCHIK ,  David Michael INGLE ,  Cory J RUUD

IPC: B22F1/00 ,  B33Y70/10 ,  C08L13/02 ,  C08K5/3415

Abstract: Described herein are compositions, methods, and systems for printing metal three-dimensional objects. In an example, described is a composition for three-dimensional printing comprising: a metal powder build material, wherein the metal powder build material has an average particle size of from about 10 μm to about 250 μm; and a binder fluid comprising: an aqueous liquid vehicle, and latex polymer particles dispersed in the aqueous liquid vehicle, wherein the latex polymer particles have an average particle size of from about 10 nm to about 300 nm.

公开(公告)号：US20210187612A1

公开(公告)日：2021-06-24

申请号：US16079359

申请日：2017-07-06

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vladek KASPERCHIK ,  Krzysztof NAUKA ,  David Michael INGLE

IPC: B22F10/14 ,  B29C64/165 ,  B22F12/41 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/10

Abstract: Described herein are methods and systems for printing a three-dimensional object. In an example, a method for printing a three-dimensional object can comprise: (i) a metallic build material being applied; (ii) a binder fluid being applied on at least a portion of the metallic build material; (iii) the selectively applied binder fluid can be flash fused to bind the metallic build material and the selectively applied binder fluid by application of an energy flux having an energy density of from about 0.5 J/cm2 to about 20 J/cm2 for less than about 1 second. In the example, (i), (ii), and (iii) can be repeated at least one time to form the three-dimensional object. The binder fluid can comprise a liquid vehicle and polymer particles dispersed in the liquid vehicle

公开(公告)号：US20200277506A1

公开(公告)日：2020-09-03

申请号：US16765599

申请日：2018-01-19

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Dennis Z. Guo ,  Jie ZHENG ,  Tienteh CHEN ,  David Michael INGLE ,  Rodney David STRAMEL ,  June YANG ,  Marcos A. Barreto CABAN

IPC: C09D11/322 ,  C09B47/04 ,  C09D17/00 ,  C09D11/033 ,  C09D11/037 ,  C09D11/107

Abstract: The present disclosure is drawn to aqueous pigment dispersions. In one example, an aqueous pigment dispersion can include from 40 wt % to 90 wt % water, from 2 wt % to 30 wt % organic co-solvent, from 7.5 wt % to 30 wt % copper phthalocyanine pigment, from 0.5 wt % to 5 wt % styrene-acrylic dispersant, and from 0.5 wt % to 5 wt % hydrophilic polyurethane dispersant having a weight average molecular weight from 10,000 Mw to 30,000 Mw. The styrene-acrylic dispersant and the hydrophilic polyurethane dispersant can be present at a weight ratio from 1:10 to 2:1.

公开(公告)号：US20190091766A1

公开(公告)日：2019-03-28

申请号：US16080879

申请日：2018-02-23

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vladek KASPERCHIK ,  David Michael INGLE ,  Cory J. RUUD

IPC: B22F3/00 ,  B22F3/10 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y70/00

Abstract: Described herein are compositions, methods, and systems for printing metal three-dimensional objects. In an example, described is a method of printing a three-dimensional object comprising: (i) depositing a metal powder build material, wherein the metal powder build material has an average particle size of from about 10 μm to about 250 μm; (ii) selectively applying a binder fluid on at least a portion of the metal powder build material, wherein the binder fluid comprises an aqueous liquid vehicle and latex polymer particles dispersed in the aqueous liquid vehicle; (iii) heating the selectively applied binder fluid on the metal powder build material to a temperature of from about 40° C. to about 180° C.; and (iv) repeating (i), (ii), and (iii) at least one time to form the three-dimensional object.

公开(公告)号：US20210197269A1

公开(公告)日：2021-07-01

申请号：US16077770

申请日：2017-02-24

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Vladek KASPERCHIK ,  Mohammed S. SHAARAWI ,  Michael G. MONROE ,  David Michael INGLE

IPC: B22F10/14 ,  B33Y70/10 ,  B33Y10/00 ,  B33Y30/00 ,  B29C64/165 ,  B29C64/209 ,  B29C64/295 ,  B22F3/10

Abstract: In a three-dimensional (3D) printing method example, a metallic build material is applied. A binder fluid is selectively applied on at least a portion of the metallic build material. The binder fluid includes a liquid vehicle and polymer particles dispersed in the liquid vehicle. The application of the metallic build material and the selective application of the binder fluid are repeated to create a patterned green part. The patterned green part is heated to at about a melting point of the polymer particles to activate the binder fluid and create a cured green part. The cured green part is heated to a thermal decomposition temperature of the polymer particles to create an at least substantially polymer-free gray part. The at least substantially polymer-free gray part is heated to a sintering temperature to form a metallic part.