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公开(公告)号：US11759849B1
公开(公告)日：2023-09-19
申请号：US17823238
申请日：2022-08-30
Applicant: GM Global Technology Operations LLC
Inventor： Liang Wang , Qigui Wang , Jianghuai Yang , Kiran Mistry , Oliver Patrick Jordan
CPC classification number: B22C9/088 , B22D25/02 , C22C37/08 , C22C37/10 , F16C3/08 , B23P2700/07 , F16C2202/06 , F16C2202/08 , F16C2202/10 , F16C2204/66 , F16C2220/02 , F16C2240/02 , F16C2240/30 , F16C2240/48 , Y10T29/17 , Y10T29/49286
Abstract: A method and system for manufacturing a cast iron crankshaft for a vehicle are provided. The system comprises a molding unit arranged to form a negative sand cast mold of the cast iron crankshaft. The mold comprising at least one molded cavity having a pattern with dimensions of the cast iron crankshaft. The system further comprises a feeding mechanism comprising a riser having a connector through which molten metallic material flows to the cast mold. The feeding mechanism feeds the molten metallic material at a riser connection angle in the at least one mold cavity. The riser connection angle corresponds to a connector modulus. The connector modulus is 20% greater than a cast modulus. The riser geometry corresponds to a riser modulus. The riser modulus is 20% greater than the connector modulus. The system further comprises a furnace, a cooling area, a separation unit, a controller and a power source.
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公开(公告)号：US11890668B2
公开(公告)日：2024-02-06
申请号：US17839680
申请日：2022-06-14
Applicant: GM Global Technology Operations LLC
Inventor： Liang Wang , Qigui Wang , Jianghuai Yang , Kiran Mistry , Oliver Patrick Jordan
CPC classification number: B22C9/02 , B22D19/04 , B22D25/06 , B23P2700/07 , F16C2202/06 , F16C2202/10 , F16C2204/60 , F16C2220/06 , Y10T29/17 , Y10T29/49286
Abstract: Systems and methods of making a cast steel alloy crankshaft for an internal combustion engine are provided. The method comprises providing a mold of the crankshaft. The mold has cavities to form the crankshaft. The method further comprises melting a first metallic material at between 1400 degrees Celsius (° C.) and 1600° C. to define a molten metallic material. In addition, the method further comprises feeding the molten metallic material at a riser connection angle of between 30° and 75° in the cavities of the negative sand cast mold. The method further comprises cooling the molten metallic material at a solidification time of between 5 seconds (sec) and 20 sec in the negative sand cast mold with at least one chill member to define a solidified metallic material having dimensions of the cast steel alloy crankshaft. Furthermore, the method comprises separating the solidified metallic material from the negative sand cast mold to define the cast steel alloy crankshaft.
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公开(公告)号：US20230398600A1
公开(公告)日：2023-12-14
申请号：US17839680
申请日：2022-06-14
Applicant: GM Global Technology Operations LLC
Inventor： Liang Wang , Qigui Wang , Jianghuai Yang , Kiran Mistry , Oliver Patrick Jordan
CPC classification number: F16C3/10 , B22D19/04 , B22D25/06 , B22C9/02 , F16C2204/60 , F16C2220/06 , F16C2360/22 , F16C2202/10 , F16C2202/06
Abstract: Systems and methods of making a cast steel alloy crankshaft for an internal combustion engine are provided. The method comprises providing a mold of the crankshaft. The mold has cavities to form the crankshaft. The method further comprises melting a first metallic material at between 1400 degrees Celsius (° C.) and 1600° C. to define a molten metallic material. In addition, the method further comprises feeding the molten metallic material at a riser connection angle of between 30° and 75° in the cavities of the negative sand cast mold. The method further comprises cooling the molten metallic material at a solidification time of between 5 seconds (sec) and 20 sec in the negative sand cast mold with at least one chill member to define a solidified metallic material having dimensions of the cast steel alloy crankshaft. Furthermore, the method comprises separating the solidified metallic material from the negative sand cast mold to define the cast steel alloy crankshaft.
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