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A kind of free forging method of cone base forging

A technology for conical cylinders and forgings, which is applied in the field of free forging of conical cylinder table forgings, can solve the problems affecting the service life of conical truncated cylinder forgings, increase the weight of conical truncated cylinder forgings, and increase the amount of processing man-hours. Market competitiveness, reduction of processing man-hours, and the effect of simple methods

Active Publication Date: 2020-07-17
MCC SFRE HEAVY IND EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of free forging method of cone base forging
  • A kind of free forging method of cone base forging
  • A kind of free forging method of cone base forging

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Embodiment Construction

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

[0045] A kind of free forging method of conical tube base forging, specifically carries out according to the following method:

[0046] Step 1, forging a blank with a through hole, specifically according to the following steps:

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

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

[0049] In step 2, the outer wall of the blank is pulled out into a conical surface while the blank is drawn out, and the following is obtained: figure 2 Shown conical surface blank, specifically carry out according to the following steps:

[00...

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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 of a conical cylinder base forging. Background technique [0002] Large frustum-shaped cylindrical forgings are widely used in the shipbuilding industry, but due to their complex shape, copy forging is extremely difficult, so the conical inner hole is generally designed as a straight hole in the free forging process. However, if the inner hole of the truncated cone-shaped cylindrical forging is set as a straight hole, the weight of the truncated-conical cylindrical forging will increase, and it will also result in a large number of additional forging pieces, 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 time is relatively large, and cutting the forgings with streamlines during processing will affect the service life of the frustum-shaped cyli...

Claims

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Application Information

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Patent Type & Authority Patents(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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