Method for preparing particle reinforced composite material based on electric arc additive manufacturing technology
A particle reinforced, composite material technology, applied in arc welding equipment, manufacturing tools, welding equipment, etc., can solve the problem of long manufacturing cycle, achieve the effect of meeting diversified needs, improving the organization and its uniformity, and shortening the production cycle
Active Publication Date: 2021-07-13
XIANGTAN UNIV
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These methods are suitable for high-volume manufacturing, the manufacturing cycle is long, and complex machining is required in the later stage before they can be put into use
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[0025] Step 1: Select the base material as low carbon steel, polish its surface with a grinder and sandpaper in turn, fix it on the cooling plate, and select boron carbide as the reinforcing material, where B 4 The particle size of C is less than 3.5um, B 4 The volume fraction of C is 20%; and argon is used as the protective gas, and the gas flow rate is 10 L / min.
[0026] Step 2: Use the MIG welding arc as the heat source, set the peak current to 140A to 190A, the base current to 90A to 140A, the wire feeding speed to 3m / min to 10m / min, and the welding speed to 90mm / min to 200mm / min. Preheat and keep the substrate temperature at a suitable temperature. During the subsequent welding process, the temperature between the layers maintains a stable temperature range.
[0027] Step 3: Add particle reinforcement phase (B 4 C) and binder (sodium silicate), roll compaction again to compact the added particle reinforcement phase and binder.
[0028] Step 4: Repeat Step 2 and Step 3...
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The invention relates to a method for preparing a composite material based on an electric arc additive manufacturing technology. The method can realize design-manufacturing integration of a metal matrix composite material, introduces a special-shaped roller in an electric arc additive manufacturing process, rolls a groove on a surfacing layer by using the special-shaped roller, and then adds a required powder material and a binder into the groove, and then, a roller is used for rolling, the added powder and the binder are compacted, next-pass stacking and covering are carried out, and the steps are repeated to obtain a final product. On the basis of the additive manufacturing method, design-manufacturing integrated forming of the particle reinforced metal matrix composite is achieved through modeling software, a numerical control technology, rolling along with welding and welding bead powder laying, grains can be effectively refined, residual stress can be effectively reduced, meanwhile, powder particle materials are convenient to add, the manufacturing process is simple, the manufacturing cost is low, and the method is suitable for integrated design-manufacturing of the metal-based particle reinforced composite material.
Description
technical field [0001] The invention belongs to the technical field of rapid prototyping, and relates to the preparation of particle-reinforced metal-matrix composite materials, in particular to a method for preparing particle-reinforced metal-matrix composite material components through electric arc addition. Background technique [0002] Additive manufacturing is a physical manufacturing technology that utilizes the principle of discrete-stacking, and under the control of a computer, according to a three-dimensional digital model, to rapidly form arbitrary structural parts. Compared with traditional "subtractive" manufacturing, additive manufacturing does not require special fixtures and models during the molding process, which shortens the processing cycle and energy consumption of molding, and increases the production efficiency of molding and the utilization rate of materials. Additive manufacturing is also known as "3D printing technology", "rapid prototyping technolog...
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IPC IPC(8): B23K9/12B23K9/235B23K9/32
CPCB23K9/12B23K9/235B23K9/32Y02P10/25
Inventor 钱锦文王文卿欧艳肖逸锋刘恋吴靓张乾坤
Owner XIANGTAN UNIV