Forging method of improving qualified rate in flaw detection of aluminum alloy disk forging

An aluminum alloy, pass rate technology, used in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve problems such as uneven flow lines and easy deformation

Active Publication Date: 2019-06-21
WUXI PAIKE HEAVY CASTING & FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Insufficiency of the existing technology: when producing small-diameter round cake forgings, during the upsetting process, the two ends of the forging are difficult to deform due to contact with the mold. The closer to the center of the forging, the smaller the deformation, so the center retains the original extrusion The axial streamline of the bar, and the outer circle is the easy-to-deform area
Therefore, the traditional process method cannot solve the problem of uneven streamline

Method used

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  • Forging method of improving qualified rate in flaw detection of aluminum alloy disk forging
  • Forging method of improving qualified rate in flaw detection of aluminum alloy disk forging
  • Forging method of improving qualified rate in flaw detection of aluminum alloy disk forging

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Experimental program
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Embodiment

[0041] Embodiment: Forging The finished product size of the forging is required to be Φ200mm×100mm, that is, d=200mm.

[0042] Step S1: unloading. The diameter of the bar is D, where D=300mm. Saw the bar along its length using a band saw, sawing into multiple billets 2 . The ratio of the width D of the blank 2 to the height H of the blank 2 is D / H=0.8. The diameter ratio of the diameter D of the blank 2 to the diameter d of the forging is 1.5.

[0043] Step S2: heating and forging. First, the billet 2 is put into a heating furnace and heated to 440°C±10°C. Then, the blank 2 is taken out, and squared and lengthened on the manipulator along the axial direction of the blank 2 . The manipulator includes a cart traveling mechanism, a clamp frame, a swing mechanism, a lifting mechanism, a rotating mechanism and a clamping mechanism. Lower anvil 3 is installed on the rotating mechanism. The tong frame adjusts the tong bar installed on the tong frame through the rising or falli...

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Abstract

The invention relates to a forging method of improving the qualified rate in flaw detection of an aluminum alloy disk forging. The forging method comprises the following steps of S1, blanking: the diameter of a rod is D, the rod is sawn in a length direction of the rod into multiple blanks, and the diameter ratio of the diameter D of each blank and the diameter d of a forging is larger than or equal to 1.5; S2, heating and forging: firstly, after being heated, the blanks are squared and drawn in axial directions of the blanks respectively, and finally, forgings are chamfered and rounded; S3, sawing: the forgings are sawn in length directions of the forgings; and S4, flaw detection after heat treatment. In the forging method, upsetting is not performed during forging, the blanks are directly drawn in the original axial direction to the required size, and the influence of unqualified flaw detection caused by an uneven flow line is solved.

Description

technical field [0001] The invention relates to the technical field of forging technology, in particular to a forging method for improving the qualified rate of flaw detection of aluminum alloy round cake forgings. Background technique [0002] Aluminum alloy small round cake forgings often fail in flaw detection due to dense defects in the center and serious bottom wave loss. Those skilled in the art generally believe that there are two reasons for the dense center defects of round cake forgings: one is that the defects of the bar lead to the unqualified flaw detection; the other is the central micro-cracks generated during the forging process. [0003] If it is a bar defect, the flaw detection before blanking should be able to form a pulse waveform on the fluorescent screen and feedback it. If it is a central microcrack, the crack morphology should also be observed in the longitudinal section low-magnification SEM image (or fracture structure). Before production, the fla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21K27/00B21K27/06
Inventor 刘美铃
Owner WUXI PAIKE HEAVY CASTING & FORGING
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