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Free forging method for nickel-based magnetically soft alloy slab

A soft magnetic alloy, nickel-based technology, applied in metal processing equipment and other directions, can solve problems such as the inability to forge large aspect ratio forging billets, and achieve the effect of improving product plasticity, reducing tonnage, and ensuring forging time.

Active Publication Date: 2012-02-22
BERIS ENG & RES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defect that the existing nickel-based alloy free forging process cannot forge a forging billet with a large aspect ratio, and provide a nickel Based on the free forging method of a soft magnetic alloy slab, the maximum aspect ratio of the forged blank obtained in the present invention is about 8, and the maximum width is 540mm. Using the forged blank of this specification, the specification of the plate that can be rolled is more than 1800mm

Method used

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  • Free forging method for nickel-based magnetically soft alloy slab
  • Free forging method for nickel-based magnetically soft alloy slab
  • Free forging method for nickel-based magnetically soft alloy slab

Examples

Experimental program
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Effect test

Embodiment 1

[0048] In this embodiment, electroslag ingots are used as raw materials. The size of the electroslag ingots is 300 mm in diameter, 787 mm in length, 445 kg in weight, and 2.6 in length / diameter.

[0049] Put the electroslag ingot above into a gas furnace and heat it to 1315°C. The above-mentioned electroslag ingot is subjected to upsetting and square forging on an electro-hydraulic hammer. When the temperature drops to 1050°C to 1100°C, the forging billet is reheated to 1315°C in a gas furnace, and then the square forging is repeated. The process of heating and then squaring was carried out three times in total to obtain a square forging billet with a section size of 210×210 mm, a length of 1070 mm, and a billet weight of 378 kg.

[0050] The above-mentioned square forging blank was reheated to 1315°C in a gas furnace, and then stretched and flattened forged on an electro-hydraulic hammer. When the temperature drops to 1050°C to 1100°C, the forging billet is reheated to 1315...

Embodiment 2-7

[0053] Examples 2-7 used basically the same process conditions as in Example 1 to prepare forging blanks, and the changed material parameters are shown in Table 1.

[0054]

Embodiment 8

[0056] The present embodiment adopts peeling ingot as raw material, and the size of this peeling ingot is the front diameter 314mm of peeling, and the length of ingot is 858mm, and the weight of ingot is 518kg, and the length of ingot / diameter of ingot is 2.7. The surface scars produced by melting and casting are removed from the above-mentioned peeling ingot. After the treatment, the peeling ingot size specification is 300mm in diameter, 858mm in length, and 473kg ingot weight.

[0057] Put the peeled ingot after the above treatment into an electric heating furnace and heat it to 1315°C. On the electro-hydraulic hammer, the above peeled ingot is subjected to upsetting and square forging. When the temperature drops to 1050°C to 1100°C, reheat the forging billet to 1315°C in an electric heating furnace, and then repeat square forging. The process of heating and then squaring was carried out 4 times in total to obtain a square forging billet with a cross-sectional size of 210×2...

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Abstract

The invention provides a free forging method for a nickel-based magnetically soft alloy slab. The free forging method for the nickel-based magnetically soft alloy slab sequentially comprises the following steps of: 1, arranging a spindle made from a nickel-based magnetically soft alloy into a heating furnace and heating the spindle to 1,300 to 1,320 DEG C; 2, performing upsetting and beating squaring forging on the spindle on forging equipment to obtain a square forged slab with the section size of (210-251)mm*(210-251)mm and the length of 1,070 to 1,108mm; 3, reheating the square forged slab to 1,300 to 1,320 DEG C in the heating furnace, and performing drawing-out and beating flattening operations on the forging equipment; and 4, reheating the forged slab obtained by the third procedure to 1,300 to 1,320 DEG C and performing beating flattening and finishing on the forging equipment to make the section size of the forged slab reach a final forged slab size and make the final forging temperature over 1,100 DEG C. The obtained forged slab has the size of (70-80)mm*(320-540)mm*(more than 1,800)mm and the aspect ratio of 4 to 7.7, and can meet the requirements of spaceflight, military industry and the like on wide slabs.

Description

technical field [0001] The invention relates to a free forging method of a nickel-based alloy slab, in particular to a free forging method of a nickel-based soft magnetic alloy slab with a large aspect ratio. The forging blank with a large aspect ratio is used in aerospace and military industries The field of wide sheets (strips). Background technique [0002] With the development of forging process theory, forging equipment and related technical equipment, various new forging processes and new technologies emerge in an endless stream, but as the most traditional free forging, the development of its equipment and technical processes is relatively slow, especially in the field of rare non-ferrous metals such as nickel Due to the technical difficulty of free forging of base alloys, there is no major breakthrough in technology and process. [0003] The traditional production process of free forging is: heating → free forging, but due to the particularity of product varieties a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/00B21J5/08B21J1/06
Inventor 李黎明
Owner BERIS ENG & RES CORP
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