CN108907195A - A kind of online controllable alloy increasing material manufacturing apparatus and method of ingredient tissue - Google Patents

Abstract

The invention relates to the technical field of additive manufacturing, in particular to an alloy additive manufacturing device and method with on-line controllable composition and organization. It consists of agitator, metal powder mixture, additive material powder, nozzle, high-energy beam generator, high-energy beam, control bus, and integrated control system. The integrated control system and the flow control valve inject and mix the metal powder of each component of the alloy according to the design ratio to form the material powder required for the additive manufacturing of the final component; during the additive manufacturing process, the additive powder composition can be adjusted online according to the needs of different components and organizations , realize the additive manufacturing of components with gradual change in composition and structure; the whole device and method have simple structure, precise controllability, high degree of automation, and strong versatility, and can be used for general metal/alloy material additive manufacturing, especially in large and complex structural parts. Functional additive manufacturing has very good technical advantages.

Description

An Alloy Additive Manufacturing Device and Method with On-line Controllable Composition and Organization

technical field

The invention relates to the technical field of additive manufacturing, in particular to an alloy additive manufacturing device and method with on-line controllable composition and structure.

Background technique

Additive Manufacturing technology (Additive Manufacturing, AM) is based on computer-aided design, digital model and advanced material processing and forming technology, through numerical control technology, materials are piled up layer by layer according to sintering, melting, light curing, spraying, etc., manufacturing New manufacturing techniques for actual structures and components. Compared with the subtractive manufacturing and assembly modes of traditional machining, it is a "bottom-up" accumulation and additive manufacturing method. Especially in terms of additive manufacturing of metal/alloy materials, companies such as Boeing, GE, Pratt & Whitney, Rolls-Royce, and MTU have applied this technology to the manufacture of complex components of major equipment such as aircraft and aero-engines, which can greatly reduce The manufacturing difficulty and economic cost of complex parts can significantly improve the efficiency of parts manufacturing. At present, in the additive manufacturing process of metal/alloy materials, raw materials are generally fed by wire feeding, powder feeding, powder spreading, etc. The composition of raw materials determines the composition of additively manufactured parts. The action trajectory of raw materials to manufacture components of different shapes and sizes.

With the development of intelligent manufacturing of advanced equipment, considering the different conditions such as service load and working temperature of different parts of a key component, it is necessary to perform local functional manufacturing on different parts of the component, so that each part of the manufactured component can meet different service performance requirements. Therefore, there is an urgent need to invent an additive manufacturing device and method with on-line controllable composition and structure to manufacture components with gradual change in composition and structure along the direction of additive growth, so as to meet the special requirements of different service performances of various parts of the component.

Contents of the invention

The object of the present invention is to provide an alloy additive manufacturing device and method with on-line controllable composition and organization. The device has a simple structure, precise controllability, and integrated control. Additive manufacturing of component structure gradient parts to solve the problems raised in the above background technology.

To achieve the above object, the present invention provides the following technical solutions:

An alloy additive manufacturing device and method with on-line controllable composition and organization, including an alloy additive manufacturing device and an additive manufacturing method with controllable composition and organization. The alloy additive manufacturing device includes metal powder of each alloy composition and a metal powder box , flow control valve, powder feeding channel, mixer, agitator, nozzle, high-energy beam generator, control bus and integrated control system, the metal powder of each component of the alloy is placed in different metal powder boxes, and the metal powder boxes It is connected to the mixer through the powder feeding channel, the mixer is provided with an agitator, the bottom of the agitator is provided with a powder feeding channel, and the powder feeding channel at the bottom of the agitator is provided with a flow control valve, and the agitator A nozzle is arranged at the bottom of the powder feeding channel at the bottom.

Preferably, the integrated control system is respectively connected to the flow control valve, the stirrer and the high-energy beam generator through a control bus.

Preferably, the additive manufacturing method with controllable composition and organization is realized based on the alloy additive manufacturing device, and the specific additive manufacturing method with controllable composition and organization is as follows:

1. According to the design requirements of the chemical composition and organizational structure of the parts to be additively manufactured, prepare the metal powders of each component and put them into each metal powder box;

2. Control the flow control valves of each powder box through the integrated control system, set the corresponding flow ratio according to the chemical composition ratio of the components, and open the valve to send the metal powder into the powder feeding pipeline;

3. After each metal powder enters the mixer, start the agitator through the integrated control system to fully stir the metal powder mixture to form additive material powder with uniform composition;

4. Use the integrated control system to open the flow control valve of the mixer, and send the material powder to the working platform through the powder feeding channel and nozzle;

5. The integrated control system controls the high-energy beam generator to trigger the high-energy beam, and performs additive manufacturing of the material powder according to the trajectory of the cut surface of the component.

Compared with the prior art, the beneficial effect of the present invention is: through the control system and the flow control valve, the metal powder of each component of the alloy is injected and mixed according to the design ratio to form the material powder required for the additive manufacturing of the final component, and the structure of the whole device is simple , High integration, high control precision and low operation difficulty. During the additive manufacturing process, the additive powder composition can be regulated online according to the requirements of different components and tissues, and the additive manufacturing of components with a gradual change in composition and organization can be realized. The entire additive manufacturing process is online controllable, accurate and efficient.

Description of drawings

Fig. 1 is the device structure schematic diagram of the present invention;

Fig. 2 is a schematic structural diagram of Embodiment 2 of the present invention.

1 is the metal powder of each component of the alloy, 2 is the metal powder box, 3 is the flow control valve, 4 is the powder feeding channel, 5 is the mixer, 6 is the agitator, 7 is the metal powder mixture, 8 is the additive material powder, 9 10 is a high-energy beam generator, 11 is a high-energy beam, 12 is a control bus, and 13 is an integrated control system.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

Please refer to Fig. 1, the present invention provides a kind of technical scheme:

An alloy additive manufacturing device with on-line controllable composition and organization, including an alloy additive manufacturing device and an additive manufacturing method with controllable composition and organization. The alloy additive manufacturing device includes metal powder 1 for each alloy composition, a metal powder box 2, flow Control valve 3, powder feeding channel 4, mixer 5, agitator 6, nozzle 9, high-energy beam generator 10, control bus 12 and comprehensive control system 13, the metal powder 1 of each alloy component is placed in different metal powder boxes 2 , the metal powder box 2 is connected to the mixer 5 through the powder feeding channel 4, the mixer 5 is provided with an agitator 6, the bottom of the agitator 6 is provided with a powder feeding channel 4, and the powder feeding channel 4 at the bottom of the agitator 6 is provided with a flow rate The control valve 3, the bottom of the powder feeding channel 4 at the bottom of the mixer 6 is provided with a nozzle 9, and the integrated control system 13 is respectively connected with the flow control valve 3, the mixer 6 and the high-energy beam generator 10 through the control bus 12, and the composition organization is controllable The additive manufacturing method is realized based on an alloy additive manufacturing device, and the additive manufacturing method with a controllable composition and organization is as follows:

1) According to the design requirements of the chemical composition and organizational structure of the parts to be additively manufactured, the metal powder 1 of each component is prepared, and loaded into each metal powder box 2 respectively;

2) Control the flow control valve 3 of each powder box through the integrated control system 13, set the corresponding flow ratio according to the chemical composition ratio of the components, and open the valve 3 to send the metal powder 1 into the powder feeding pipeline 4;

3) After each metal powder 1 is poured into the mixer 5, the agitator 6 is started through the integrated control system 13, and the metal powder mixture 7 is fully mixed to form additive material powder 8 with uniform composition;

4) Use the integrated control system 13 to open the flow control valve 3 of the mixer 5, and send the material powder 8 to the working platform through the powder feeding channel 4 and the nozzle 9;

5) The integrated control system 13 controls the high-energy beam generator 10 to trigger the high-energy beam 11 to perform additive manufacturing of the material powder 8 according to the tangential track of the component.

Through the control system 13 and the flow control valve 3, the metal powder 1 of the alloy components is injected and mixed according to the design ratio to form the material powder required for the additive manufacturing of the final component. The entire device has a simple structure, high integration, high control precision, and difficult operation. Small. During the additive manufacturing process, the additive powder composition can be controlled online according to the requirements of the composition and organization of different parts, so as to realize the additive manufacturing of components with a gradual change in composition and organization. The entire additive manufacturing process is online controllable, accurate and efficient. The device and method can be used for additive manufacturing of general metal/alloy materials, especially for local functional additive manufacturing of large and complex structural parts, which has good technical advantages.

Embodiment 2 (Additive manufacturing of high-temperature turbine blades with gradual change in composition and structure)

With reference to accompanying drawing 2, an alloy additive manufacturing device with on-line controllable composition and organization according to the present invention consists of nickel powder 1, chromium powder 2, aluminum powder 3, titanium powder 4, metal powder box 5, flow control valve 6, Powder feeding channel 7, mixer 8, agitator 9, metal powder mixture 10, additive material powder 11, nozzle 12, high energy beam generator 13, high energy beam 14, control bus 15, and integrated control system 16.

Concrete work process of the present invention is:

1) Prepare nickel powder 1, chromium powder 2, aluminum powder 3, and titanium powder 4 respectively according to the composition requirements of nickel-based superalloy turbine blades, and put them into the powder box 5 respectively;

2) The manufacture of turbine blades generally starts from the tenon at the root of the blade. Since the tenon is installed in the tenon groove of the turbine disk, the working temperature is not high (below 800°C), but the mechanical load such as centrifugal and vibration of the blade is high, so it is necessary to increase the aluminum 3 and Titanium 4 content, form nickel and aluminum/titanium intermetallic compounds, improve mechanical properties through aging strengthening, at this time, set the material composition ratio in the integrated control system 16 to 70:10:10:10, and control the flow control valve 6 Perform flow control;

3) Nickel powder 1, chromium powder 2, aluminum powder 3, and titanium powder 4 are imported into the mixer 8 through the powder feeding channel 7 according to the ratio of 70:10:10:10, and the mixer 9 is started to pair the metal powder through the integrated control system 16 The mixture 10 is fully stirred to form additive material powder 11 with uniform composition;

4) Use the integrated control system 16 to open the flow control valve 6 of the mixer 8, and send the material powder to the working platform through the powder feeding channel 7 and the nozzle 12;

5) The integrated control system 16 controls the high-energy beam generator 13 to trigger the high-energy beam 15, and performs additive manufacturing according to the trajectory of the tangent plane of the turbine blade;

6) After the tenon of the turbine blade is manufactured, since the blade body has been working in the high-temperature flow channel for a long time, and the working temperature is above 800°C, it is necessary to improve the thermal stability and high-temperature creep performance of the blade by increasing the content of chromium. Therefore, the material The composition ratio is set to 70:20:5:5 in the integrated control system 16, and the flow control valve 6 is controlled for flow control;

7) Nickel powder 1, chromium powder 2, aluminum powder 3, titanium powder 4 are imported into the mixer 8 through the powder feeding channel 7 according to the ratio of 70:20:5:5, and the mixer 9 is started to pair the metal powder through the integrated control system 16 The mixture 10 is fully stirred to form additive material powder 11 with uniform composition;

8) Utilize the integrated control system 16 to open the flow control valve 6 of the mixer 8, and send the material powder to the working platform through the powder feeding channel 7 and the nozzle 12;

9) The integrated control system 16 controls the high-energy beam generator 13 to trigger the high-energy beam 15, and performs additive manufacturing according to the trajectory of the blade body section of the turbine blade.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (3)

1. a kind of online controllable alloy increasing material manufacturing apparatus and method of ingredient tissue, including alloy increasing material manufacturing device and ingredient Organize controllable increasing material manufacturing method, it is characterised in that：The alloy increasing material manufacturing device includes alloys components metal powder (1), metal powder box (2), flow control valve (3), powder feeding channel (4), mixer (5), blender (6), spray head (9), high energy Beam generator (10), control bus (12) and complex control system (13), the alloys components metal powder (1) are placed on difference Metal powder box (2) in, the metal powder box (2) is connect by powder feeding channel (4) with mixer (5), and the mixer (5) is interior Portion is provided with blender (6), and blender (6) bottom is provided with powder feeding channel (4), the powder feeding of blender (6) bottom It is provided on channel (4) flow control valve (3), powder feeding channel (4) bottom end of blender (6) bottom is provided with spray head (9)。

2. a kind of online controllable alloy increasing material manufacturing device of ingredient tissue according to claim 1, it is characterised in that：Institute It states complex control system (13) and is occurred respectively with flow control valve (3), blender (6) and high energy beam by control bus (12) Device (10) connection.

3. the controllable increasing material manufacturing method of ingredient tissue according to claim 1, it is characterised in that：The ingredient tissue can The increasing material manufacturing method of control is realized, the controllable increasing material manufacturing side of specific ingredient tissue based on above-mentioned alloy increasing material manufacturing device Method is as follows：

1) according to the design requirement of chemical component and institutional framework to increasing material manufacturing component, each multicomponent metallic powder (1) is prepared, It is respectively charged into each metal powder box (2)；

2) flow control valve (3) that each powder box is controlled by complex control system (13), according to member chemistry component ratio Corresponding discharge ratio is set, and opens valve (3) and metal powder (1) is sent into powder feeding pipes (4)；

3) after each metal powder (1) imports mixer (5), start blender (6) by complex control system (13), by metal powder Mixture (7) carries out that conjunction is sufficiently stirred, and forming component uniformly increases material material powder (8)；

4) flow control valve (3) that mixer (5) are opened using complex control system (13), passes through powder feeding channel (4) and spray Head (9) send material powder (8) to workbench；

5) complex control system (13) control high energy beam generator (10) triggering high energy beam (11), according to component section track to material Feed powder (8) carries out increasing material manufacturing.