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Manufacturing method of connecting rod for nuclear-power embedded container

A manufacturing method and pre-embedded technology, applied in the field of forging manufacturing, can solve the problems of large machining allowance, long machining cycle and high manufacturing cost, and achieve the effects of small machining residual material, short machining cycle and low manufacturing cost.

Active Publication Date: 2021-03-16
GUIZHOU AEROSPACE PRECISION PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the products produced by forging are cut off due to the fiber direction inside the forging, so their comprehensive mechanical properties and service life are reduced, and because the machining allowance is too large, the required machining is long, and it also causes waste of raw materials; and Forming by die forging, first of all, due to the large parts, the requirements for die forging press equipment are high, and the equipment with small tonnage cannot be formed by die forging, and secondly, the inner hole of the product cannot be forged.
These two methods are to use mechanical processing to remove excess metal to make connecting rods, and both have the technical problems of large machining allowance, long processing cycle, large material waste, and high manufacturing cost.

Method used

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  • Manufacturing method of connecting rod for nuclear-power embedded container
  • Manufacturing method of connecting rod for nuclear-power embedded container
  • Manufacturing method of connecting rod for nuclear-power embedded container

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-10 As shown, the manufacturing method of the connecting rod for the nuclear power pre-embedded container comprises the following steps:

[0029] (1) Forging: heating the steel ingot to 850°C-900°C, and then forging the billet out of the billet on a free forging press;

[0030] (2) Elongation: Upsetting and elongating the billet into a cylindrical forging with the upper and lower flat anvils, and then dividing the material to obtain a cylindrical billet 5, and then using the upper and lower Haval to elongate in sections, and then rolling and elongating until it becomes a cylindrical forging stepped shaft blank;

[0031] (3) Punching blind holes: Punching blind holes on the small end face of the stepped shaft to obtain a cylindrical stepped shaft blank 6 with blind holes;

[0032] (4) The first return to the furnace: Return the cylindrical stepped shaft blank 6 with blind holes to the furnace for heating and heat preservation. The heating temperature i...

Embodiment 2

[0039] Such as Figure 1-10 As shown, the manufacturing method of the connecting rod for the nuclear power pre-embedded container comprises the following steps:

[0040] (1) Forging: heating the steel ingot to 900°C-1150°C, and then forging the billet out of the billet on a free forging press;

[0041] (2) Elongation: Upsetting and elongating the billet into a cylindrical forging with the upper and lower flat anvils, and then dividing the material to obtain a cylindrical billet 5, and then using the upper and lower Haval to elongate in sections, and then rolling and elongating until it becomes a cylindrical forging stepped shaft blank;

[0042] (3) Punching blind holes: Punching blind holes on the small end face of the stepped shaft to obtain a cylindrical stepped shaft blank 6 with blind holes;

[0043] (4) The first return to the furnace: Return the cylindrical stepped shaft blank 6 with blind holes to the furnace for heating and heat preservation. The heating temperature ...

Embodiment 3

[0050] Such as Figure 1-10 As shown, the manufacturing method of the connecting rod for the nuclear power pre-embedded container comprises the following steps:

[0051] (1) Forging: heating the steel ingot to 900°C-950°C, and then forging the billet out of the billet on a free forging press;

[0052](2) Elongation: Upsetting and elongating the billet into a cylindrical forging with the upper and lower flat anvils, and then dividing the material to obtain a cylindrical billet 5, and then using the upper and lower Haval to elongate in sections, and then rolling and elongating until it becomes a cylindrical forging stepped shaft blank;

[0053] (3) Punching blind holes: Punching blind holes on the small end face of the stepped shaft to obtain a cylindrical stepped shaft blank 6 with blind holes;

[0054] (4) The first return to the furnace: Return the cylindrical stepped shaft blank 6 with blind holes to the furnace for heating and heat preservation. The heating temperature is...

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Abstract

The invention discloses a manufacturing method of a connecting rod for a nuclear power embedded container. The manufacturing method comprises the following steps of (1) forging, (2) drawing-out, (3) punching of a blind hole, (4) remelting for the first time, (5) remelting for the second time and (6) punching of holes. According to the method, thin-wall forgings of different materials and differentsizes can be forged, wave-shaped forgings can also be forged, the fiber directions of the wave-shaped forgings are distributed in a shape following mode and are complete, the method is safe and reliable, the high-temperature-resistant, high-pressure-resistant and corrosion-resistant characteristics are achieved, machining excess materials are small, materials are saved, the machining period is short, and the manufacturing cost is low.

Description

technical field [0001] The invention belongs to the technical field of forging manufacturing, and in particular relates to a method for manufacturing a connecting rod for a nuclear power pre-embedded container. Background technique [0002] The connecting rod is a special-shaped structural part with inner holes used on the pre-embedded container of nuclear equipment. It has very high requirements for high temperature resistance, high pressure, corrosion resistance, low internal defects, and comprehensive mechanical properties. The traditional manufacturing method of the connecting rod is generally to use thicker forgings for forging, and then mill the upper and lower end faces and turn the excess internal allowance; or use die forging to form. At present, the products produced by forging are cut off due to the fiber direction inside the forging, so their comprehensive mechanical properties and service life are reduced, and because the machining allowance is too large, the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/76B21J5/00B21J5/02B21J5/06B21J5/08B21J5/10B21J13/02B21J13/06
CPCB21K1/766B21J5/002B21J5/02B21J5/06B21J5/08B21J5/10B21J13/02B21J13/06Y02E30/30
Inventor 杜力军杨颖李文清杨超晏桥白玉康
Owner GUIZHOU AEROSPACE PRECISION PRODS