Spatial position forming method and device based on additive manufacturing
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A technology of spatial location and additive manufacturing, applied in the field of additive manufacturing, can solve problems such as failure to meet design requirements, waste of materials, poor fit, etc., and achieve the effect of improving repair accuracy, realizing repair, and ensuring machinability
Pending Publication Date: 2022-03-04
AECC AVIATION POWER CO LTD
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Problems solved by technology
At present, it mainly relies on manual repair or scrap treatment, resulting in waste of materials, and the degree of adhesion between the dissimilar materials on the surface of the workpiece and the workpiece itself is poor, which often fails to meet the design requirements.
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Embodiment 1
[0067] repair of parts
[0068] For the high-pressure turbine working blades of the engine, they are precision-cast with directionally solidified nickel-based superalloy.
[0069] The high-pressure turbine of the engine rubs against the outer ring sprayed with NiCrAlY sealing coating under the working state. After one overhaul period, the working blades of the high-pressure turbine are severely worn at the tip of the blade during work, and some of the tip has been worn to the boss, with an average wear of 0.6~ 0.7mm, 43% of the vanes have worn down to the boss.
[0070] In view of the characteristics of blade tip wear faults and complex profiles, the application of the application for additive repair and remanufacturing of high-pressure turbine blades can meet the requirements of one overhaul cycle of aero-engines.
[0071] The working blade of the high-pressure turbine cooperates with it in the work with a NiCrAlY sealing coating with a three-layer structure prepared by plas...
Embodiment 2
[0085] The same part is created with multiple sets of materials:
[0086] The gas turbine swirler assembly is composed of GH536 and GH188. The traditional method is to process 6 parts and combine them through 5 electron beam welds. There are problems such as long processing cycle, difficult deformation control, and poor flow channel consistency. Through this patented technology, 6 parts of dissimilar materials can be formed at one time, greatly reducing the process and operating equipment, shortening the product production cycle, and avoiding the impact of welding deformation and other problems on product quality. Dissimilar material cyclone components are formed as follows:
[0087] Step 1, use the BLT-S310 powder bed fusion additive manufacturing equipment to print multiple GH356 parts on the positioning tool;
[0088] Step 2, take out the formed parts, clean the powder cabin of the equipment, and add GH188 powder;
[0089] Step 3, use a 3D scanning device to scan the GH35...
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Abstract
The invention discloses a spatial position forming method and device based on additive manufacturing, and the method comprises the steps: carrying out the additive forming of a positioning foundation on a positioning tool, carrying out the three-dimensional scanning of the positioning tool and the positioning foundation, obtaining complete three-dimensional data, carrying out the reverse modeling, and obtaining a spatial position according to the reverse modeling data and the positioning reference of the positioning tool. According to the method, the spatial position of the workpiece is quickly positioned by utilizing a spatial positioning method, the spatial position of a forming model is quickly and accurately obtained based on three-dimensional scanning, and a forming process of additive manufacturing is generated for quickly repairing and remanufacturing the workpiece, so that the repairing efficiency and the repairing precision of the part are greatly improved; therefore, the problem that precise positioning of the absolute position of the workpiece space is difficult to achieve through additive manufacturing equipment is solved, the method plays a crucial role in workpiece repairing and remanufacturing, grafting printing can be achieved on existing additive manufacturing equipment, the equipment does not need to be transformed, and the cost is reduced. According to the method, batched, rapid and accurate forming can be carried out at the specified spatial position of the part.
Description
technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a spatial position forming method and device based on additive manufacturing. Background technique [0002] At present, important parts in the aerospace field generally have the characteristics of expensive materials, high manufacturing costs, and long production cycles. When parts are damaged during processing or service, if they are scrapped, it will cause great waste. At the same time, the working conditions of important components in the aerospace field are relatively harsh, and it is often necessary to build dissimilar material structures at specific positions on the workpiece. At present, it mainly relies on manual repair or scrap treatment, resulting in waste of materials, and the degree of adhesion between the dissimilar materials on the surface of the workpiece and the workpiece itself is poor, which often fails to meet the design requirements....
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Application Information
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