METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS WITH IMPROVED PROPERTIES
    2.
    发明申请
    METHOD AND APPARATUS FOR PRODUCING THREE-DIMENSIONAL OBJECTS WITH IMPROVED PROPERTIES 审中-公开
    用于生产具有改进性质的三维物体的方法和装置

    公开(公告)号:US20150064048A1

    公开(公告)日:2015-03-05

    申请号:US14380869

    申请日:2013-02-19

    摘要: Method for fabricating a three-dimensional object by successive consolidation, layer by layer, of selected regions of a layer of powder, consolidated regions corresponding to successive sections of the three-dimensional object, comprising in order: a—deposit layer of powder onto a support; b—fuse the layer of powder by a first laser energy source so as to obtain a fused layer corresponding to the section of the object and exhibiting a first state of its mechanical properties, c—heat at least a part of the fused layer by a second electron beam energy source to a temperature which follows a controlled variation over time so as to modify the first state of the fused layer and to obtain a consolidated layer with improved mechanical properties, d—repeat the preceding steps until several superposed consolidated layers are formed with improved properties forming the object.

    摘要翻译: 通过逐层固化一层粉末的选定区域,对应于三维物体的连续部分的固结区域来制造三维物体的方法,包括以下步骤:将粉末的沉积层沉积到 支持; b通过第一激光能量源熔化粉末层,以获得对应于物体部分的熔融层,并显示出其机械性能的第一状态,c将至少一部分熔融层加热至 第二电子束能量源到随时间受控变化的温度,以便改变熔融层的第一状态并获得具有改进的机械性能的固化层,d重复前述步骤直到形成几个叠置的固结层 具有形成物体的改进的特性。

    Torpedo for extruder
    3.
    发明授权

    公开(公告)号:US11305460B2

    公开(公告)日:2022-04-19

    申请号:US16472291

    申请日:2017-12-19

    摘要: A torpedo for an extruder comprises: longitudinal member (9) which is provided at the periphery thereof with a plurality of thread portions (12) which protrude outwards and which are spaced apart in the circumferential direction; a plurality of sluice blades (19) which are mounted so as to be movable on the longitudinal member and which are partially engaged in apertures (18) of the longitudinal member, the longitudinal member (9) and the sluice blades (19) being provided with complementary radial guiding surfaces (13, 14, 18) which are in contact with each other; and adjustment means (28) for radially displacing the sluice blades relative to the longitudinal member. The sluice blades extend through the spaces between the thread portions, respectively. The thread portions (12) and the sluice blades (19) are provided with complementary radial guiding surfaces (13, 14, 18).