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High-performance long-service-life aluminum alloy stamping tool and die profile and preparation method thereof

A long-life, aluminum alloy technology, applied in the direction of improving process efficiency, can solve the problems of large friction coefficient and high aluminum adhesion, and achieve the effects of low friction coefficient, extended service life and high strength

Active Publication Date: 2022-02-15
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-performance, long-life aluminum alloy stamping mold profile, which solves the problems of high friction coefficient and high adhesion to aluminum in existing aluminum alloy mold profiles

Method used

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Examples

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Effect test

Embodiment 1

[0038] The invention discloses a method for preparing a high-performance, long-life aluminum alloy stamping die profile, which is specifically implemented according to the following steps:

[0039] Step 1, weighing according to the composition of high-performance, long-life aluminum alloy stamping mold profiles: scrap steel, bread iron, pure nickel plate, inoculant, nodulizer, ferrosilicon; put the weighed pig iron raw material, scrap steel Put it into the intermediate frequency induction furnace to heat and melt into molten iron, and then add ferrosilicon and pure nickel plate;

[0040] The melting temperature is 1530°C, and the holding time is 5 minutes;

[0041] The inoculant includes the following components according to the mass fraction: 65% Si, 1% Ba, 1% Ca, 2.0% Mn, 1% Re, 0.004% Bi, and the rest is Fe. The amount of the inoculant is 0.3% of the total mass of molten iron;

[0042] The nodulizer includes the following components according to the mass fraction: 4.0% Mg,...

Embodiment 2

[0052] The invention discloses a method for preparing a high-performance, long-life aluminum alloy stamping die profile, which is specifically implemented according to the following steps:

[0053] Step 1, weighing according to the composition of high-performance, long-life aluminum alloy stamping mold profiles: scrap steel, blast furnace hot metal, pure nickel plate, inoculant, nodulizer, ferrosilicon; put the weighed pig iron raw materials, scrap steel Put it into the intermediate frequency induction furnace to heat and melt into molten iron, and then add ferrosilicon and pure nickel plate;

[0054] The melting temperature is 1550°C, and the holding time is 3 minutes;

[0055] The inoculant includes the following components according to the mass fraction: 75% Si, 2% Ba, 2% Ca, 2.5% Mn, 2% Re, 0.010% Bi, and the rest is Fe. The amount of inoculant preparation accounts for 0.4% of the total mass of molten iron;

[0056] The nodulizer includes the following components accordin...

Embodiment 3

[0066] The invention discloses a method for preparing a high-performance, long-life aluminum alloy stamping die profile, which is specifically implemented according to the following steps:

[0067] Step 1, weighing according to the composition of high-performance, long-life aluminum alloy stamping mold profiles: scrap steel, blast furnace hot metal, pure nickel plate, inoculant, nodulizer, ferrosilicon; put the weighed pig iron raw materials, scrap steel Put it into the intermediate frequency induction furnace to heat and melt into molten iron, and then add ferrosilicon and pure nickel plate;

[0068] The melting temperature is 1540°C, and the holding time is 4 minutes;

[0069] The inoculant includes the following components according to the mass fraction: 70% Si, 1.5% Ba, 1.5% Ca, 2.3% Mn, 1.5% Re, 0.006% Bi, and the rest is Fe. The amount of the inoculant is 0.35% of the total mass of molten iron;

[0070] The nodulizer includes the following components according to the ma...

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Abstract

The invention discloses a high-performance long-service-life aluminum alloy stamping tool and die profile and a preparation method thereof. The high-performance long-service-life aluminum alloy stamping tool and die profile comprises, by mass, 3-4% of Ni, 3.6-3.9% of C, 2.0-2.8% of Si, 0.6-1.0% of Mn, smaller than or equal to 0.1% of P, smaller than or equal to 0.04% of S, 0.03-0.05% of Mg, 0.03-0.05% of Re and the balance Fe and inevitable impurities. Through component control, adding of an inoculant and a spheroidizing agent in the solidification process of the profile, heat treatment and the like, the profile with a structure comprising lower bainite, 30-40% of carbon-rich austenite, fine and uniformly-distributed spherical graphite and a small amount of martensite is obtained. Therefore, the profile has the characteristics of high hardness, high wear resistance, high strength, high toughness, low friction coefficient, good self-lubricating performance, low adhesion to aluminum and the like, and meets the performance requirements on the preparation material of the aluminum alloy stamping die when the aluminum alloy stamping die is in service.

Description

technical field [0001] The invention belongs to the technical field of preparation of aluminum alloy stamping forming materials, and in particular relates to a high-performance, long-life aluminum alloy stamping mold profile, and also relates to a preparation method of the high-performance, long-life aluminum alloy stamping mold profile. Background technique [0002] Aluminum alloy stamping is an aluminum alloy pressure processing method that uses a mold installed on a press to apply pressure to the aluminum alloy at room temperature to cause separation or plastic deformation to obtain the required aluminum alloy parts. During the stamping process, strong friction occurs between the outer surface of the aluminum alloy and the working surface of the mold under the action of external pressure, resulting in wear or adhesion of aluminum on the working surface of the mold, resulting in failure of the mold. Therefore, the performance requirements for aluminum alloy stamping dies a...

Claims

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Application Information

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IPC IPC(8): C22C37/04C22C37/10C21D1/19C22C33/08
CPCC22C37/10C22C37/04C22C33/08C21D1/19C21D2211/002C21D2211/001Y02P10/20
Inventor 颜国君蒋百铃刘保建
Owner XIAN UNIV OF TECH
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