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A kind of preparation method of 93w-4.9ni-2.1fe/20 steel bimetallic material

A 93w-4.9ni-2.1fe, bimetallic technology, applied in the field of bimetallic composite material preparation, can solve problems such as low bonding strength and easy fracture

Active Publication Date: 2022-07-01
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a kind of preparation method of 93W-4.9Ni-2.1Fe / 20 steel bimetallic material, solve the 93W-4.9Ni-2.1Fe / 20 steel bimetallic material prepared by the prior art with low bond strength, use The problem of easy breakage in the process

Method used

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  • A kind of preparation method of 93w-4.9ni-2.1fe/20 steel bimetallic material
  • A kind of preparation method of 93w-4.9ni-2.1fe/20 steel bimetallic material

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Experimental program
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Effect test

Embodiment 1

[0034] Weigh two metal powders of Cu and Cr with a mass ratio of 98.8:1.2, mix the well-matched powders evenly, put them into a cold-pressing mold, and apply a pressure of 300MPa for cold-pressing. Put the cold-pressed compact into the graphite crucible, then put the crucible into the induction melting furnace, and vacuum the induction melting furnace. When the vacuum degree in the melting furnace reaches 3.0×10 -3 After Pa, the heating starts, and the initial current increases by 2A per minute; when the current exceeds 20A, the current increases by 1A per minute; when the current rises to 28A, the temperature is maintained for 20 minutes; after the insulation is completed, the temperature is reduced, and the cooling rate is controlled at 2A / min, until the current is reduced to a minimum, and the current is turned off. Then the sample is cooled with the furnace, and the intermediate layer copper alloy is obtained.

[0035] A circular step pit with a depth of 3mm and a diamet...

Embodiment 2

[0038] Weigh two metal powders of Cu and Zn with a mass ratio of 80:20, mix the well-proportioned powders evenly and put them into a cold-pressing mold, apply 300MPa pressure to cold-press to form, and put the cold-pressed green compact into graphite Then put the crucible into the induction melting furnace, and vacuumize the induction melting furnace. When the vacuum degree in the melting furnace reaches 3.0×10 -3 After Pa, the heating starts, and the initial current increases by 2A per minute; when the current exceeds 20A, the current increases by 1A per minute; when the current rises to 28A, the temperature is maintained for 20 minutes; after the insulation is completed, the temperature is reduced, and the cooling rate is controlled at 2A / min, until the current is reduced to a minimum, and the current is turned off. The sample was then cooled in the furnace to obtain a copper alloy.

[0039] A circular step pit with a depth of 3mm and a diameter of φ20mm was machined on th...

Embodiment 3

[0042] Weigh two metal powders of Cu and Ni with a mass ratio of 80:20, mix the well-proportioned powders evenly, put them into a cold-pressing mold, apply a pressure of 300MPa to cold-press to form, and put the cold-pressed green compact into graphite Then put the crucible into the induction melting furnace, and vacuumize the induction melting furnace. When the vacuum degree in the melting furnace reaches 3.0×10 -3 After Pa, the heating starts, and the initial current increases by 2A per minute; when the current exceeds 20A, the current increases by 1A per minute; when the current rises to 28A, the temperature is maintained for 20 minutes; after the insulation is completed, the temperature is reduced, and the cooling rate is controlled at 2A / min, until the current is reduced to the minimum, the current is turned off, and then the sample is cooled with the furnace to obtain a copper alloy.

[0043] A circular step pit with a depth of 4mm and a diameter of φ20mm was machined o...

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Abstract

The invention discloses a method for preparing a 93W-4.9Ni-2.1Fe / 20 steel bimetallic material, which is specifically implemented according to the following steps: step 1, preparing an intermediate layer alloy; step 2, preparing the 93W-4.9Ni-2.1Fe alloy, The 20 steel and the interlayer alloy are pretreated; step 3, the pretreated 93W‑4.9Ni‑2.1Fe alloy, the interlayer alloy, and the 20 steel are placed in sequence, and sintered in an atmosphere protection sintering furnace to obtain 93W‑4.9 Ni‑2.1Fe / 20 steel bimetallic material. The bimetallic material prepared by the invention has the respective superior properties of 93W‑4.9Ni‑2.1Fe alloy and 20 steel, and meanwhile the minimum interface shear strength can reach 53MPa, which can meet the requirements of 93W‑4.9Ni‑2.1Fe / Application of 20 steel bimetallic materials.

Description

technical field [0001] The invention belongs to the technical field of bimetallic composite material preparation, in particular to a preparation method of a 93W-4.9Ni-2.1Fe / 20 steel bimetallic material. Background technique [0002] The connection of high-density material tungsten and structural material steel has important applications in nuclear fusion reactors and weapon systems. Since the 1970s, tungsten alloys have been used in weapons as armor-piercing materials, but tungsten alloys have poor toughness and are prone to breakage during armor-piercing. Combining them with steel with high strength and toughness is a high-performance weapon. a development direction. [0003] At present, the connection between tungsten and steel mainly adopts brazing and solid-phase diffusion welding. On the whole, the strength of tungsten steel connectors is not high, and it is easy to break during use, which is difficult to meet the requirements of weapons and equipment. SUMMARY OF TH...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F7/04B22F3/10C22C9/00C22C9/06C22C27/04
CPCB22F7/04B22F3/1007C22C27/04C22C9/06C22C9/00B22F2007/045B22F2999/00B22F2201/02
Inventor 邹军涛宋大拙吕品正石浩
Owner XIAN UNIV OF TECH
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