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Manufacturing method of hollow part made of short fiber reinforced metal matrix or ceramic matrix composite material
The invention relates to a method for manufacturing a hollow part made of a ceramic or metal matrix composite material, comprising the following steps: preparing a raw material (30) comprising at least short fibers and a ceramic or metal matrix precursor charge, positioning a sacrificial core (10) in a mold cavity (23) of an injection molding device (20), the sacrificial core (10) has a mold cavity having a size greater than the size of the sacrificial core, shaping a raw material (30) by injection molding the raw material into a free space (230) between the sacrificial core (10) and an inner wall of the mold cavity to obtain a green body comprising the sacrificial core and the shaped raw material, removing the green body from the injection molding apparatus (20), densifying the raw material (30) by rapid sintering of the green body in order to convert the charge into a ceramic or metal matrix, removing or removing the sacrificial core (10) in order to obtain a hollow part (60) made of a ceramic or metal matrix composite material; wherein before the raw materials are injected, the sacrificial core is coated with a flexible graphite sheet, and a deposited graphite layer or a boron nitride paint layer is sprayed on the sacrificial core.
本发明涉及一种制造由陶瓷基复合材料或金属基复合材料制成的中空部件的方法，包括以下步骤：准备至少包含短纤维和陶瓷基体或金属基体前体装料的原材料(30)，在注射成型设备(20)的模腔(23)中定位牺牲芯(10)，所述模腔的尺寸大于所述牺牲芯的尺寸，通过将原材料注射成型到所述牺牲芯(10)和所述模腔的内壁之间的自由空间(230)中来成形原材料(30)，以获得包括所述牺牲芯和成形的原材料的生坯，从所述注射成型设备(20)中取出所述生坯，通过所述生坯的快速烧结使原材料(30)致密化，以便将装料转化为陶瓷基体或金属基体，去除或除去所述牺牲芯(10)以获得由陶瓷基体或金属基体复合材料制成的中空部件(60)；其中，在注入原材料之前，在所述牺牲芯上包覆柔性石墨片、喷涂沉积的石墨层或氮化硼漆层。
Manufacturing method of hollow part made of short fiber reinforced metal matrix or ceramic matrix composite material
The invention relates to a method for manufacturing a hollow part made of a ceramic or metal matrix composite material, comprising the following steps: preparing a raw material (30) comprising at least short fibers and a ceramic or metal matrix precursor charge, positioning a sacrificial core (10) in a mold cavity (23) of an injection molding device (20), the sacrificial core (10) has a mold cavity having a size greater than the size of the sacrificial core, shaping a raw material (30) by injection molding the raw material into a free space (230) between the sacrificial core (10) and an inner wall of the mold cavity to obtain a green body comprising the sacrificial core and the shaped raw material, removing the green body from the injection molding apparatus (20), densifying the raw material (30) by rapid sintering of the green body in order to convert the charge into a ceramic or metal matrix, removing or removing the sacrificial core (10) in order to obtain a hollow part (60) made of a ceramic or metal matrix composite material; wherein before the raw materials are injected, the sacrificial core is coated with a flexible graphite sheet, and a deposited graphite layer or a boron nitride paint layer is sprayed on the sacrificial core.
本发明涉及一种制造由陶瓷基复合材料或金属基复合材料制成的中空部件的方法，包括以下步骤：准备至少包含短纤维和陶瓷基体或金属基体前体装料的原材料(30)，在注射成型设备(20)的模腔(23)中定位牺牲芯(10)，所述模腔的尺寸大于所述牺牲芯的尺寸，通过将原材料注射成型到所述牺牲芯(10)和所述模腔的内壁之间的自由空间(230)中来成形原材料(30)，以获得包括所述牺牲芯和成形的原材料的生坯，从所述注射成型设备(20)中取出所述生坯，通过所述生坯的快速烧结使原材料(30)致密化，以便将装料转化为陶瓷基体或金属基体，去除或除去所述牺牲芯(10)以获得由陶瓷基体或金属基体复合材料制成的中空部件(60)；其中，在注入原材料之前，在所述牺牲芯上包覆柔性石墨片、喷涂沉积的石墨层或氮化硼漆层。
Manufacturing method of hollow part made of short fiber reinforced metal matrix or ceramic matrix composite material
一种由短纤维增强的金属基体或陶瓷基体复合材料制成的空心部件的制造方法
DE LEHOZE ARNAUD (author) / BOUILLON ERIC (author)
2023-08-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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