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Integral extrusion moulding method of large-sized GH4169 alloy disc shaft forge piece

A GH4169, extrusion forming technology, which is applied in the forming field of disk shaft forgings, can solve the problems of metal streamline disorder, uneven metal forming, incomplete metal filling of large disk parts, etc., so as to improve production efficiency and performance Effect

Inactive Publication Date: 2018-12-25
GUIZHOU ANDA AVIATION FORGING
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Problems solved by technology

In the field of local continuous loading and labor-saving forming, it mainly refers to the forming process of axial closed rolling. For the forming process of small-sized disc shaft forgings in the axial closed rolling process, it can be rolled directly and formed at one time. , but for rolling and forming of large disk shaft forgings, the metal filling of large disks will be incomplete or there will be certain defects in metal filling
In the axial closed rolling process, the entire process generally adopts a linear feeding method, but for large-size discs, this feeding method causes a sudden drop in temperature, resulting in uneven metal forming, metal flow line disorder, and metallographic structure. extremely bad phenomenon

Method used

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  • Integral extrusion moulding method of large-sized GH4169 alloy disc shaft forge piece

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Embodiment Construction

[0018] To implement the GH4169 alloy large-scale disc shaft forging integral extrusion forming method of the present invention, it is necessary to provide forging heating furnace, press, manipulator and other equipment.

[0019] The main chemical element content of the alloy (weight percentage) is: C content ≤0.08%, Cr content 17.0%-21.0%, Ni content 50.0%-55.0%, Co content ≤1.0%, Mo content 2.80% ~3.30%, Al content 0.30%~0.70%, Ti content 0.75%~1.15%, Nb content 4.75%~5.50%, B content ≤0.006%, Mg content ≤0.01%, Mn content ≤0.35 %, Si content ≤ 0.35%, P content ≤ 0.015%, S content ≤ 0.015%, Cu content ≤ 0.30%, Ca content ≤ 0.01%, Pb content ≤ 0.0005%, Se content ≤ 0.0003% , The balance is Fe.

[0020] The steps of this method are as follows:

[0021] Step 1: According to figure 1 The shape of the large disc shaft forging is designed for the upper and lower molds of the disc end mold. The upper surface of the disc end is selected as the contour, and the vertical line 6° is used as...

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Abstract

The invention discloses an integral extrusion moulding method of a large-sized GH4169 alloy disc shaft forge piece. The integral extrusion moulding method is characterized in that metal moulding nonuniformity, metal flow line disorder and a poor metallographic structure can be effectively prevented through continuous extrusion, and the large-sized GH4169 alloy disc shaft forge piece adopting a uniform structure is obtained. The rolling method is mainly applied to forging of large-sized disc shaft forge pieces in the fields of aviation, aerospace, industrial machinery and the like.

Description

Technical field [0001] The invention relates to a forming method of a disc shaft forging, in particular to an integral extrusion forming method of a GH4169 alloy large disc shaft forging. Background technique [0002] As industrial demand continues to rise, more and more of its key parts adopt overall structural design. At present, large-scale disc shaft forgings are mostly formed in stages. Among them, the disc-shaped end adopts forming technology mainly including free forging, hydraulic press die forging, hammer die forging and screw press die forging, etc. The shaft end is generally free forged or extruded The process is shaped. For smaller disc shaft forgings, extrusion is generally used for forming. The above forming methods are low in efficiency, low in precision, and extremely complex in production, especially unable to meet the production requirements of large-scale disc shaft forgings. And the materials used are also developing in the direction of difficult deformatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00
CPCB21J5/002
Inventor 夏春林刘成叶康源
Owner GUIZHOU ANDA AVIATION FORGING
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