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Free forging method for conical barrel table forged piece

A conical cylinder and forging technology, which is applied in the field of free forging of conical forgings, can solve the problems of affecting the service life of conical forgings, increasing the weight of conical forgings, and increasing the amount of processing time. The effect of market competitiveness, reduction of processing man-hours, and simple method

Active Publication Date: 2018-12-07
MCC SFRE HEAVY IND EQUIP
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Problems solved by technology

However, if the inner hole of the frustum-shaped cylindrical forging is set as a straight hole, the weight of the frusto-conical cylindrical forging will increase, and it will also result in more additional forging blocks, resulting in unnecessary waste
At the same time, due to the limitation of the shape of the large frustum-shaped cylindrical forgings, the subsequent processing hours are relatively large. Cutting off the forgings with streamlines during processing will affect the service life of the frustum-shaped cylindrical forgings.

Method used

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  • Free forging method for conical barrel table forged piece
  • Free forging method for conical barrel table forged piece
  • Free forging method for conical barrel table forged piece

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Embodiment Construction

[0044] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] A free forging method for conical cylinder table forgings, which is specifically carried out according to the following methods:

[0046] Step 1, forging the blank with through holes, which is carried out according to the following steps:

[0047] Step 1.1, put the steel ingot into a calcining furnace, and calcinate at a temperature of 1200°C-1220°C for 12-14 hours;

[0048] Step 1.2, after chamfering the calcined steel ingot, cut off the nozzle and riser, and then spheronize and level; punch holes on the spheronized and leveled steel ingot to obtain the following figure 1 Blank shown with through holes.

[0049] Step 2, while the blank is elongated, the outer wall of the blank is drawn into a conical surface to obtain the following: figure 2 For the conical surface blank shown, proceed as follows:

[0050] Step 2.1, put the billet ...

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Abstract

The invention discloses a free forging method for a conical barrel table forged piece. The method comprises the specific steps that a blank with a through hole is forged; the outer wall of the blank is drawn to be a conical surface while the blank is drawn out; the through hole of the blank with the conical surface is expanded till the inner wall of the blank with the conical surface forms a conical barrel in a cone shape; and the two ends of the conical barrel is shrunk, so that the conical barrel table forged piece is obtained. By means of the free forging method for the conical barrel tableforged piece, the conical barrel table forged piece with an inner hole being in a truncated-cone shape can be forged, the weight of the conical barrel table forged piece can be reduced, and the machining man-hour of the conical barrel table forged piece can be shortened.

Description

technical field [0001] The invention belongs to the technical field of free forging, and relates to a free forging method for conical cylinder table forgings. Background technique [0002] Large-scale truncated cone forgings are widely used in the shipbuilding industry, but due to their complex shape and great difficulty in copy forging, the conical inner hole is generally designed as a straight hole in the free forging process. However, after the inner hole of the truncated cone-shaped cylinder forging is set as a straight hole, the weight of the truncated cylinder-shaped forging will increase, and it will also lead to more additional forging blocks, resulting in unnecessary waste. At the same time, due to the limitation of the shape of large truncated cone forgings, the amount of man-hours for subsequent processing is relatively large. Cutting off the forgings with streamlines during processing will affect the service life of the truncated cone forgings. SUMMARY OF THE I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/06B21J5/10B21J1/06
CPCB21J1/06B21J5/06B21J5/10
Inventor 郭长虹曹薇田新奇滕军航薛永庆
Owner MCC SFRE HEAVY IND EQUIP
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