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Technical method for carrying out extrusion forming on local additive manufacturing pre-formed aluminium alloy

An additive manufacturing and extrusion forming technology, applied in the field of precision forming and processing, can solve the problems that the manufacturing technology cannot meet the high-end manufacturing field, overweight internal quality, inability to achieve high efficiency, etc. The effect of cycle shortening

Active Publication Date: 2020-04-28
BEIJING HANGXING MACHINERY MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the wide application of lightweight structures, complex structures of aluminum alloys are widely used, and more stringent requirements are put forward for parts with high performance, high load capacity, and low cost. A single manufacturing technology is increasingly unable to meet the growing development of high-end manufacturing fields. needs
If the casting process is used, there are problems such as overweight and poor internal quality; and the use of a single hot extrusion forming technology cannot be efficient and short-cycle

Method used

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  • Technical method for carrying out extrusion forming on local additive manufacturing pre-formed aluminium alloy
  • Technical method for carrying out extrusion forming on local additive manufacturing pre-formed aluminium alloy
  • Technical method for carrying out extrusion forming on local additive manufacturing pre-formed aluminium alloy

Examples

Experimental program
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Effect test

Embodiment 1

[0086] Taking a 5A06 aluminum alloy multi-boss deep cavity box as an example, it is manufactured as follows:

[0087] 1. Draw a two-dimensional dimension sketch through points, straight lines, arcs, etc. Secondly, the sketch is constructed by stretching, and then different parts of the body are constructed by Boolean operations to construct local boss dimension features, and finally, such as chamfering and chamfering Design and construct target box-shaped parts such as circles, whose maximum three-dimensional dimension is (350*260*70) mm, such as image 3 shown.

[0088] 2. According to the three-dimensional model of the box-shaped piece, one end of the bottom surface of the box-shaped piece is used as the parting surface, and the bottom surface is at the size T of the box-shaped piece. f0 Based on the design process margin t 0 , where t 0 =3mm, the size of the parting surface of the hot extrusion final part is T f1 =T f0 +t 0 , at the same time from the parting surface ...

Embodiment 2

[0100] Taking a 2A12 aluminum alloy variable diameter rotary shaft as an example, it is manufactured as follows:

[0101] 1. Draw a two-dimensional dimension sketch through points, straight lines, etc. Secondly, the sketch is constructed by rotating the body, and then different parts of the body are constructed by Boolean operations to construct local dimension features, and finally, chamfering is performed to construct the final target rotary shaft. The maximum three-dimensional dimension is (Φ75*310) mm, such as Figure 8 shown.

[0102] 2. According to the three-dimensional model of the rotary shaft, the part has the characteristics of axisymmetric structure. Therefore, the surface passing through the axis is the parting surface, and the diameter of different parts at the parting surface is T f1 =T f0 +t 0 , at the same time from the parting surface to each section at the end T x1 =T x0 +t x , the final dimensions of the hot extrusion parts are (Φ85*320)mm~(Φ40*320)mm...

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Abstract

The invention discloses a technical method for carrying out extrusion forming on a local additive manufacturing pre-formed aluminium alloy. The technical method comprises the following steps that: constructing a target product three-dimensional model; designing a hot extrusion final forming element; designing and manufacturing a hot extrusion mould; designing a local additive manufacturing pre-formed element; designing a base model; processing the base model into a base finished product; carrying out surface treatment on the base finished product; preparing an additive manufacturing pre-formedelement; carrying out machining treatment on the additive manufacturing pre-formed element; adopting the hot extrusion mould to carry out hot extrusion and forming on the additive manufacturing pre-formed element subjected to the machining treatment, and manufacturing a hot extrusion final forming element; and carrying out hot treatment on the hot extrusion final forming element; carrying out machining on the hot extrusion final forming element subjected to the hot treatment to obtain a target product. The technical method can effectively guarantee that a complex aluminium alloy element is processed and manufactured, a use ratio of a product material is greatly improved, pre-forming and middle working procedures are reduced, and a forming period is shortened.

Description

technical field [0001] The invention relates to a local additive manufacturing preformed aluminum alloy extrusion forming process, which belongs to the field of precision forming processing and is suitable for high-efficiency, high-performance and low-cost manufacturing of aluminum alloy complex components. Background technique [0002] At present, aerospace product parts are developing in the direction of light weight, complexity and integration. Aluminum alloys are widely used in aerospace, rail transit, weapons and other fields. [0003] In the field of aerospace, the requirements for the integration and lightweight of product components are getting higher and higher, and the requirements for manufacturing dimensional accuracy are also getting higher and higher. With the wide application of lightweight structures, complex structures of aluminum alloys are widely used, and more stringent requirements are put forward for parts with high performance, high load capacity, and...

Claims

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Application Information

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IPC IPC(8): B21C23/02
CPCB21C23/02
Inventor 刘奇何智苏江舟陈宏伟李保永王志敏刘玉平姚为
Owner BEIJING HANGXING MACHINERY MFG CO LTD
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