CN118683081A - Method for processing inner cavity expansion in composite material manufacturing - Google Patents
Method for processing inner cavity expansion in composite material manufacturing Download PDFInfo
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- CN118683081A CN118683081A CN202411057767.8A CN202411057767A CN118683081A CN 118683081 A CN118683081 A CN 118683081A CN 202411057767 A CN202411057767 A CN 202411057767A CN 118683081 A CN118683081 A CN 118683081A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000007731 hot pressing Methods 0.000 claims abstract description 6
- 238000003672 processing method Methods 0.000 claims abstract 2
- 229910001374 Invar Inorganic materials 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 4
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/543—Fixing the position or configuration of fibrous reinforcements before or during moulding
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
本发明公开了一种复合材料制造内腔外扩的处理方法，包括以下步骤：S1：清理工装，对成型面施加脱模剂；S2：在成型面的表面铺叠预浸料，在预浸料表面铺叠脱模布；S3：铺层表铺设产品件，铺设结束后抽真空封袋，进行热压固化；S4：固化以及冷却结束后，放置至常温后进行拆袋脱模；S5：脱模后撕下被脱模布隔离的预浸料；S6：完成内腔外扩，本发明所提供的方案可以使因内腔过小无法适应现有工装模具的部件内腔进行外扩，无需重新制造能够适应材料的工装，能够降低工装制造成本，同时提高工装制造效率。
The invention discloses a processing method for expanding the inner cavity of composite material manufacturing, comprising the following steps: S1: cleaning tooling and applying a release agent to a molding surface; S2: laying prepreg on the surface of the molding surface and laying a release cloth on the surface of the prepreg; S3: laying product parts on the laying surface, vacuuming and sealing the bags after laying, and performing hot pressing curing; S4: after curing and cooling, placing at room temperature and then removing the bags and demoulding; S5: tearing off the prepreg isolated by the release cloth after demoulding; S6: completing the expansion of the inner cavity. The solution provided by the invention can expand the inner cavity of a component that cannot adapt to the existing tooling mold due to its too small inner cavity, without the need to re-manufacture tooling that can adapt to the material, thereby reducing the tooling manufacturing cost and improving the tooling manufacturing efficiency.
Description
技术领域Technical Field
本发明涉及复合材料修复技术领域，尤其涉及一种复合材料制造内腔外扩的处理方法。The invention relates to the technical field of composite material repair, and in particular to a method for processing the outer expansion of an inner cavity in composite material manufacturing.
背景技术Background Art
在复合材料制件的研发制造过程中，为了优化性能、节约成本、减轻重量，经常需要更换材料。然而，某些替换材料在受热时会收缩，这导致重新定制大型成型工装的成本高昂且效率低下。对于新材料的成型状态，需要进行探索和测试，以确保其适应性。In the process of researching, developing and manufacturing composite parts, materials often need to be replaced in order to optimize performance, save costs and reduce weight. However, some replacement materials shrink when heated, which makes it costly and inefficient to re-customize large molding tools. The molding state of new materials needs to be explored and tested to ensure their adaptability.
在材料替换过程中，如果后续材料无法适应现有工装模具，尤其是具有内腔特征的部件，将面临挑战。如果因部件内腔过大导致无法适应现有工装模具，导致后续加工或安装受到影响，可以通过铣削来适应；如果因部件内腔过小导致无法适应现有工装模具，导致后续加工或安装受到影响，只能采用增材进行修复。然而，许多材质的工装难以进行增材修复，进而需要重新制造能够适应材料的工装。但是，大型工装的制造周期通常超过一个月，使得工装制造成本增加，制造效率下降。During the material replacement process, if the subsequent material cannot adapt to the existing tooling and molds, especially parts with internal cavity features, there will be challenges. If the internal cavity of the component is too large to fit into the existing tooling and molds, which affects the subsequent processing or installation, it can be adapted by milling; if the internal cavity of the component is too small to fit into the existing tooling and molds, which affects the subsequent processing or installation, it can only be repaired by additive manufacturing. However, tooling made of many materials is difficult to repair by additive manufacturing, and it is necessary to remanufacture tooling that can adapt to the material. However, the manufacturing cycle of large tooling is usually more than one month, which increases the tooling manufacturing cost and reduces manufacturing efficiency.
发明内容Summary of the invention
为了克服现有技术的不足，本发明提供了一种复合材料制造内腔外扩的处理方法，解决现有技术中复合材料加工成型的内腔过小无法进行后续加工的问题。In order to overcome the shortcomings of the prior art, the present invention provides a method for processing the outer expansion of the inner cavity in composite material manufacturing, which solves the problem in the prior art that the inner cavity formed by composite material processing is too small to be processed subsequently.
一种复合材料制造内腔外扩的处理方法，包括以下步骤：A method for processing an inner cavity and an outer cavity of a composite material, comprising the following steps:
S1：清理工装，对成型面施加脱模剂；S1: Clean the tooling and apply release agent to the molding surface;
S2：在所述成型面的表面铺叠预浸料，在预浸料表面铺叠脱模布；S2: Laying a prepreg on the surface of the molding surface, and laying a release cloth on the surface of the prepreg;
S3：铺层表铺设产品件，铺设结束后抽真空封袋，热压固化；S3: Lay the product parts on the plying surface, vacuum seal the bags after laying, and heat press to solidify;
S4：固化以及冷却结束后，放置至常温后进行拆袋脱模；S4: After curing and cooling, place at room temperature and then remove the bag and demould;
S5：脱模后撕下被脱模布隔离的预浸料；S5: After demoulding, tear off the prepreg isolated by the release cloth;
S6：完成内腔外扩。S6: Complete the expansion of the inner cavity.
进一步地，所述S1中脱模剂为770-NC。Furthermore, the release agent in S1 is 770-NC.
进一步地，所述S1中成型面材质为殷瓦钢。Furthermore, the material of the forming surface in S1 is Invar steel.
进一步地，所述殷瓦钢加工精度为±0.1mm。Furthermore, the processing accuracy of the Invar steel is ±0.1 mm.
进一步地，所述S2中预浸料为三层0.2mm的碳纤维预浸料。Furthermore, the prepreg in S2 is three layers of 0.2 mm carbon fiber prepreg.
进一步地，所述S2中脱模布为单层0.02mm的脱模布。Furthermore, the release cloth in S2 is a single-layer 0.02 mm release cloth.
进一步地，所述S3中热压固化的具体步骤为：使用真空袋热压罐固化成型，热压罐内的压强在15min内从0升至600KPa并保持，热压罐内的温度从室温升温至130℃，保温60min后升温至180℃，再保温180min，然后对热压罐进行冷却，冷却至室温后泄压真空。Furthermore, the specific steps of hot pressing curing in S3 are: using a vacuum bag autoclave for curing and molding, the pressure in the autoclave is increased from 0 to 600 KPa within 15 minutes and maintained, the temperature in the autoclave is increased from room temperature to 130°C, kept warm for 60 minutes, then increased to 180°C, and kept warm for another 180 minutes, and then the autoclave is cooled, and the pressure is released after cooling to room temperature.
本发明的有益效果：本发明所提供的方案可以使因内腔过小无法适应现有工装模具的部件内腔进行外扩，无需重新制造能够适应材料的工装，能够降低工装制造成本，同时提高工装制造效率。Beneficial effects of the present invention: The solution provided by the present invention can expand the inner cavity of a component that cannot fit into the existing tooling mold due to its small inner cavity, without the need to re-manufacture tooling that can adapt to the material, thereby reducing tooling manufacturing costs and improving tooling manufacturing efficiency.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1是一种复合材料制造内腔外扩的处理方法流程示意图。FIG. 1 is a schematic flow chart of a method for processing an inner cavity and an outer cavity for manufacturing a composite material.
具体实施方式DETAILED DESCRIPTION
以下由特定的具体实施例说明本发明的实施方式，本领域技术人员可由本说明书所揭示的内容轻易地了解本发明的其他优点及功效。虽然本发明的描述将结合较佳实施例一起介绍，但这并不代表此发明的特征仅限于该实施方式。恰恰相反，结合实施方式作发明介绍的目的是为了覆盖基于本发明的权利要求而有可能延伸出的其它选择或改造。为了提供对本发明的深度了解，以下描述中将包含许多具体的细节。本发明也可以不使用这些细节实施。此外，为了避免混乱或模糊本发明的重点，有些具体细节将在描述中被省略。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。应注意的是，在本说明书中，相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。The following is an explanation of the embodiments of the present invention by specific specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to the embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, many specific details will be included in the following description. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the key points of the present invention, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. It should be noted that in this specification, similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures.
除非另作定义，本发明中使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本发明中使用的 “第一”、 “第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。同样，“一个”或者 “一”等类似词语也不表示数量限制，而是表示存在至少一个。 “设置”、 “相连”、 “连接”等类似的词语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通，对于本领域的普通技术人员而言，可以具体情况理解上述术语在本实施例中的具体含义。 “上”、 “下”、 “左”、 “右”、“内”、“底”等指示的方位或位置关系为基于附图所示的方位或位置关系，或者是该发明产品使用时惯常摆放的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "set", "connected", "connected" and the like shall be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection, or an indirect connection through an intermediate medium, or it may be a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to the specific circumstances. The directions or positional relationships indicated by “upper”, “lower”, “left”, “right”, “inside”, “bottom”, etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
为使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明的实施方式作进一步地详细描述。To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
本实施例中，如附图1所示，一种复合材料制造内腔外扩的处理方法，包括以下步骤：In this embodiment, as shown in FIG1 , a method for processing a composite material to manufacture an inner cavity and an outer cavity includes the following steps:
S1：清理工装，对成型面施加脱模剂；S1: Clean the tooling and apply release agent to the molding surface;
S2：在成型面的表面铺叠预浸料，在预浸料表面铺叠脱模布；S2: Laying prepreg on the surface of the molding surface, and laying release cloth on the surface of the prepreg;
S3：铺层表铺设产品件，铺设结束后抽真空封袋，热压固化；S3: Lay the product parts on the plying surface, vacuum seal the bags after laying, and heat press to solidify;
S4：固化以及冷却结束后，放置至常温后进行拆袋脱模；S4: After curing and cooling, place at room temperature and then remove the bag and demould;
S5：脱模后撕下被脱模布隔离的预浸料；S5: After demoulding, tear off the prepreg isolated by the release cloth;
S6：完成内腔外扩。S6: Complete the expansion of the inner cavity.
进一步地，所述S1中脱模剂为770-NC。Furthermore, the release agent in S1 is 770-NC.
进一步地，所述S1中成型面材质为殷瓦钢，选用殷瓦钢的原因为殷瓦钢在高温下受热热膨胀尺寸较小，得到的成品尺寸即工装尺寸，，且后续加多层增厚材料也便于计算所需层数。Furthermore, the forming surface material in S1 is Invar steel. The reason for selecting Invar steel is that the thermal expansion size of Invar steel is small when heated at high temperature, and the finished product size is the tooling size, and the subsequent addition of multiple layers of thickening material is also convenient for calculating the required number of layers.
进一步地，所述殷瓦钢加工精度为±0.1mm。Furthermore, the processing accuracy of the Invar steel is ±0.1 mm.
进一步地，所述S2中预浸料为三层0.2mm的碳纤维预浸料，此处根据需要扩张的大小决定预浸料铺层厚度，若有其他扩张尺寸要求，可选用0.1mm厚度的预浸料，按预计扩张尺寸进行铺叠。Furthermore, the prepreg in S2 is three layers of 0.2 mm carbon fiber prepreg. The thickness of the prepreg layers is determined according to the required expansion size. If there are other expansion size requirements, 0.1 mm thick prepreg can be selected and stacked according to the expected expansion size.
进一步地，所述S2中脱模布为单层0.02mm的脱模布。Furthermore, the release cloth in S2 is a single-layer 0.02 mm release cloth.
进一步地，所述S3中热压固化的具体步骤为：使用真空袋热压罐固化成型，热压罐内的压强在15min内从0升至600KPa并保持，热压罐内的温度从室温升温至130℃，保温60min后升温至180℃，再保温180min，然后对热压罐进行冷却，冷却至室温后泄压真空。Furthermore, the specific steps of hot pressing curing in S3 are: using a vacuum bag autoclave for curing and molding, the pressure in the autoclave is increased from 0 to 600 KPa within 15 minutes and maintained, the temperature in the autoclave is increased from room temperature to 130°C, kept warm for 60 minutes, then increased to 180°C, and kept warm for another 180 minutes, and then the autoclave is cooled, and the pressure is released after cooling to room temperature.
进一步地，在产品试验过程中，应确保试验温度和压力与实际需要扩张的产品特性相适应。例如，如果产品体系中含有常温固化的胶粘剂，其最大耐温为150℃，而选择的碳纤维材料在180℃固化，则可能引起产品内部粘接失效。在热压成型过程中，预浸料成型所需的压力和真空度同样不应超过产品允许的最大值。特别是在复合材料层压板与蜂窝结构材料混合使用时，进行共固化扩张内腔作业，由于蜂窝材料在长度方向（LW方向）较为脆弱，容易在受压时变形。在这种情况下，应考虑更换胶膜种类以适应温度和压力条件，或者调整生产工艺，避免强度可能不足的材料参与共固化过程，改为采用二次胶接的方式。Furthermore, during product testing, it should be ensured that the test temperature and pressure are compatible with the actual product characteristics that need to be expanded. For example, if the product system contains an adhesive that cures at room temperature, its maximum temperature resistance is 150°C, and the selected carbon fiber material is cured at 180°C, it may cause internal bonding failure of the product. During the hot pressing process, the pressure and vacuum required for prepreg molding should also not exceed the maximum value allowed by the product. Especially when composite laminates are mixed with honeycomb structural materials, co-curing and expanding the inner cavity are carried out. Since honeycomb materials are relatively fragile in the length direction (LW direction), they are easily deformed when under pressure. In this case, it should be considered to change the type of adhesive film to adapt to the temperature and pressure conditions, or adjust the production process to avoid materials that may be insufficient in strength from participating in the co-curing process, and instead use secondary bonding.
本发明的有益效果：本发明所提供的方案可以使因内腔过小无法适应现有工装模具的部件内腔进行外扩，无需重新制造能够适应材料的工装，能够降低工装制造成本，同时提高工装制造效率。Beneficial effects of the present invention: The solution provided by the present invention can expand the inner cavity of a component that cannot fit into the existing tooling mold due to its small inner cavity, without the need to re-manufacture tooling that can adapt to the material, thereby reducing tooling manufacturing costs and improving tooling manufacturing efficiency.
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.
Claims (7)
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