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A kind of isothermal die forging forming method of rare earth magnesium alloy thin belly fork

A technology of isothermal die forging and rare earth magnesium, which is applied in metal processing equipment, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc., can solve the problems of difficult control of the microstructure and properties of magnesium alloy forgings, difficulties in blank making and forming, Forming defects and other problems can be avoided to avoid the sharp growth of grains, reduce the forging temperature, and improve the effect of mold design

Active Publication Date: 2017-05-03
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems that conventional forging prepares rare-earth magnesium alloy thin-bellied fork-like forgings, which are difficult in billet making and forming, prone to forming defects, difficult to control the microstructure and properties of magnesium alloy forgings, and low in performance, and further provides a rare earth Die and method for isothermal die forging of magnesium alloy thin-belt fork type

Method used

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  • A kind of isothermal die forging forming method of rare earth magnesium alloy thin belly fork
  • A kind of isothermal die forging forming method of rare earth magnesium alloy thin belly fork
  • A kind of isothermal die forging forming method of rare earth magnesium alloy thin belly fork

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specific Embodiment approach 1

[0026] Specific implementation mode one: combine Figure 1-Figure 2 Explain that the isothermal forging die of a rare earth magnesium alloy thin-bellied fork in this embodiment includes an upper die 1, a mandrel 3 and a lower die 2, and the middle part of the upper surface of the lower die 2 is sequentially processed with a cavity from top to bottom 2-1 and the ejection hole 2-2, the mold cavity 2-1 and the ejection hole 2-2 are connected;

[0027] A die insert 5 is arranged in the cavity 2-1, the die insert 5 is a stepped die insert, the small end of the die insert 5 is placed in the ejection hole 2-2, and the lower end of the upper die 1 The middle part of the surface is processed with a punch 1-1 matching the cavity 2-1, the shape of the big end of the punch 1-1 and the die insert 5 is set in cooperation with the thin-belly fork to be formed, the punch 1- 1 extends into the mold cavity 2-1, the ejector rod 3 extends into the ejection hole 2-2, and the upper surface of the ...

specific Embodiment approach 2

[0029] Specific implementation mode two: combination Figure 9 Illustrate that the push rod 3 of the present embodiment consists of an upper cylinder 3-1 and a lower cylinder 3-2 that are coaxially arranged and made into one body from top to bottom in sequence, and the upper end of the lower cylinder 3-2 is connected to the bottom of the upper cylinder 3-1. The lower end surface is fixed, the upper cylinder 3-1 is inserted into the ejection hole 2-2, and the upper surface of the upper cylinder 3-1 leans against the die insert 5. With such a setting, it is convenient and reliable to use. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0030] Specific implementation mode three: combination Figure 1-Figure 14 In this embodiment, a kind of isothermal die forging forming die of specific embodiment 1 or 2 is used to realize an isothermal die forging forming method of rare earth magnesium alloy thin-bellied fork. Fork isothermal die forging forming method is to realize according to the following steps:

[0031] 1. Billet making: the raw material of rare earth magnesium alloy is extruded bar with a diameter of 155mm and a length of 160mm, which is subjected to composite forming by upsetting and drawing process, and free forging is obtained into a curved rare earth magnesium alloy blank;

[0032]2. Forging and forming: put the rare earth magnesium alloy slab blank obtained in step 1 into a box-type heating resistance furnace for heating, take it out when heated to 160-180°C, and spray graphite emulsion solution evenly on the surface of the blank; The blanks sprayed with graphite emulsion solution are put into a b...

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Abstract

The invention relates to a forming die and method for magnesium alloy thin webbed supporting fork forgings, in particular to an isothermal die forging forming die and method for a rare earth magnesium alloy thin webbed supporting fork. The problems that rare earth magnesium alloy thin webbed supporting fork forgings are prepared through conventional forging, blank manufacturing and forming are hard, forming defects are prone to occurring, the structure performance of the magnesium alloy forgings is hard to control, and the performance is low are solved. The forming method comprises the main steps that 1, blank manufacturing is carried out; 2, forging forming is carried out; 3, cooling is carried out; 4, primary acid pickling is carried out; 5, damage repairing is carried out; 6, final forging is carried out; 7, secondary acid pickling is carried out, wherein a magnesium alloy forging obtained in the sixth step is subjected to acid pickling, graphite on the surface is cleaned away, and a formed forging with the treated surface is obtained; and 8, the formed forging with the treated surface obtained in the seventh step is put into an aging oven to be subjected to aging treatment, and the finished rare earth magnesium alloy thin webbed supporting fork is manufactured. The forming die and method are used for preparing of the magnesium alloy thin webbed supporting fork.

Description

technical field [0001] The invention relates to a forming die and method for a magnesium alloy thin-belt fork forging, in particular to an isothermal die forging forming die and method for a rare-earth magnesium alloy thin-belt fork forging. Background technique [0002] Magnesium alloy is currently the lightest metal material in engineering application materials, with high specific strength and specific stiffness. With the development of aerospace, automobile, electronics and other fields, the requirements for lightweight materials and high performance are getting higher and higher. For aerospace components that require weight reduction, most of them are designed with webs and forks. If such components are manufactured by traditional methods such as casting and machining, it is difficult to meet the requirements of high performance, environmental protection, energy saving, and high efficiency. . The precision plastic forming method using isothermal forming process is an e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J13/02B21K1/74B21K29/00
CPCB21J13/02B21K1/74B21K29/00
Inventor 袁林徐福昌单德彬
Owner HARBIN INST OF TECH
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