公开(公告)号：US20190291213A1

公开(公告)日：2019-09-26

申请号：US16436228

申请日：2019-06-10

Applicant: Wisconsin Alumni Research Foundation

Inventor： Venkata Madhukanth Vadali ,  Chao Ma ,  Neil Arthur Duffie ,  Xiaochun Li ,  Frank Ewald Pfefferkorn

IPC: B23K26/354 ,  B23K26/352

Abstract: Surface asperities, such as roughness characteristics, are reduced or otherwise mitigated via the control of surface regions including the asperities in different regimes. In accordance with various embodiments, the height of both high-frequency and low-frequency surface asperities is reduced by controlling characteristics of a surface region under a first regime to flow material from the surface asperities. A second regime is implemented to reduce a height of high-frequency surface asperities in the surface region by controlling characteristics of the surface region under a second regime to flow material that is predominantly from the high-frequency surface asperities, the controlled characteristics in the second regime being different than the controlled characteristics in the first regime. Such aspects may include, for example, controlling melt pools in each regime via energy pulses, to respectively mitigate/reduce the asperities.

公开(公告)号：US10315275B2

公开(公告)日：2019-06-11

申请号：US13749426

申请日：2013-01-24

Applicant: Wisconsin Alumni Research Foundation

Inventor： Venkata Madhukanth Vadali ,  Chao Ma ,  Neil Arthur Duffie ,  Xiaochun Li ,  Frank Ewald Pfefferkorn

IPC: B23K26/00 ,  B23K26/354 ,  B23K26/352

Abstract: Surface asperities, such as roughness characteristics, are reduced or otherwise mitigated via the control of surface regions including the asperities in different regimes. In accordance with various embodiments, the height of both high-frequency and low-frequency surface asperities is reduced by controlling characteristics of a surface region under a first regime to flow material from the surface asperities. A second regime is implemented to reduce a height of high-frequency surface asperities in the surface region by controlling characteristics of the surface region under a second regime to flow material that is predominantly from the high-frequency surface asperities, the controlled characteristics in the second regime being different than the controlled characteristics in the first regime. Such aspects may include, for example, controlling melt pools in each regime via energy pulses, to respectively mitigate/reduce the asperities.

公开(公告)号：US20140202997A1

公开(公告)日：2014-07-24

申请号：US13749426

申请日：2013-01-24

Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION

Inventor： Venkata Madhukanth Vadali ,  Chao Ma ,  Neil Arthur Duffie ,  Xiaochun Li ,  Frank Ewald Pfefferkorn

IPC: B23K26/00

CPC classification number: B23K26/354 ,  B23K26/3576

Abstract: Surface asperities, such as roughness characteristics, are reduced or otherwise mitigated via the control of surface regions including the asperities in different regimes. In accordance with various embodiments, the height of both high-frequency and low-frequency surface asperities is reduced by controlling characteristics of a surface region under a first regime to flow material from the surface asperities. A second regime is implemented to reduce a height of high-frequency surface asperities in the surface region by controlling characteristics of the surface region under a second regime to flow material that is predominantly from the high-frequency surface asperities, the controlled characteristics in the second regime being different than the controlled characteristics in the first regime. Such aspects may include, for example, controlling melt pools in each regime via energy pulses, to respectively mitigate/reduce the asperities.

Abstract translation: 通过控制包括不同制度中的粗糙度的表面区域来减少表面粗糙度，例如粗糙度特征，或者减轻其他情况。 根据各种实施例，通过控制在第一方式下的表面区域的特性来从表面粗糙度流动材料来降低高频和低频表面粗糙度的高度。 实施第二种方案是通过控制在第二种状态下的表面区域的特性来降低表面区域中的高频表面粗糙度的高度来流动主要来自高频表面粗糙度的材料，第二种受控特性 政权与第一制度的受控特征不同。 这些方面可以包括例如通过能量脉冲控制每个状态中的熔池，以分别减轻/减少粗糙度。