公开(公告)号：US20150209859A1

公开(公告)日：2015-07-30

申请号：US14165719

申请日：2014-01-28

Applicant: General Electric Company

Inventor： Jian ZHENG ,  Arthur S. PECK

IPC: B22D25/06

CPC classification number: B22D25/06 ,  B22D27/045 ,  C30B11/003 ,  C30B11/006 ,  C30B29/52

Abstract: A casting method and cast article are provided. The casting method includes providing a casting furnace, the casting furnace including a withdrawal region in a lower end, positioning a mold within the casting furnace, positioning a molten material in the mold, partially withdrawing the mold a withdrawal distance through the withdrawal region in the casting furnace, the withdrawal distance providing a partially withdrawn portion, then reinserting at least a portion of the partially withdrawn portion into the casting furnace through the withdrawal region, and then completely withdrawing the mold from the casting furnace. The reinserting partially re-melts a solidified portion within the partially withdrawn portion to fill pores formed therein with the molten material. The cast article includes a microstructure and a porosity corresponding to being formed by a process comprising partially withdrawing, reinserting, and completely withdrawing of a mold from a casting furnace to form the cast article.

Abstract translation: 提供铸造方法和铸造制品。 铸造方法包括提供铸造炉，铸造炉包括下端的取出区域，将模具定位在铸造炉内，将熔融材料定位在模具中，通过在模具中的退出区域部分地抽出模具的取出距离 退出距离提供部分撤回部分，然后通过退出区域将至少部分撤回部分重新插入铸造炉中，然后从铸造炉中完全取出模具。 重新插入部分地再次熔化部分抽出部分内的凝固部分，以填充其中形成的熔融材料的孔。 铸造制品包括微观结构和孔隙度，其对应于通过包括从铸造炉部分地取出，重新插入和完全取出模具的方法形成，以形成铸造制品。

公开(公告)号：US20170095857A1

公开(公告)日：2017-04-06

申请号：US15383384

申请日：2016-12-19

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Jian ZHENG ,  Arthur S. PECK

IPC: B22D27/04 ,  F01D5/14 ,  C22C19/05 ,  B22D21/00 ,  B22D25/02

CPC classification number: B22D27/045 ,  B22D21/005 ,  B22D25/02 ,  B22D25/06 ,  C22C19/057 ,  C30B13/00 ,  C30B29/52 ,  F01D5/147 ,  F05D2220/30 ,  F05D2230/21 ,  F05D2240/307

Abstract: A casting method and cast article are provided. The casting method includes providing a casting furnace, the casting furnace including a withdrawal region in a lower end, positioning a mold within the casting furnace, positioning a molten material in the mold, partially withdrawing the mold a withdrawal distance through the withdrawal region in the casting furnace, the withdrawal distance providing a partially withdrawn portion, then reinserting at least a portion of the partially withdrawn portion into the casting furnace through the withdrawal region, and then completely withdrawing the mold from the casting furnace. The reinserting at least partially re-melts a solidified portion within the partially withdrawn portion to reduce or eliminate freckle grains. The cast article includes a microstructure and occurrence of freckle grains corresponding to being formed by a process comprising partially withdrawing, reinserting, and completely withdrawing of a mold from a casting furnace to form the cast article.