Self-hardening iron-based material for shear blade and preparation method of shear blade

A technology of iron-based materials and shearing blades, applied in shearing devices, knives for shearing devices, manufacturing tools, etc., can solve the problems of loss of wear resistance and fatigue resistance, and reduce manufacturing and processing costs , Reduce tempering process, improve impact toughness and strength

Inactive Publication Date: 2021-01-12
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 self-hardening iron-based material for shearing blades, which solves the problem that the existing carbon steel and alloy steel blades lose wear resistance and fatigue resistance due to the movement or loss of the carbon layer and hardened layer

Method used

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  • Self-hardening iron-based material for shear blade and preparation method of shear blade
  • Self-hardening iron-based material for shear blade and preparation method of shear blade
  • Self-hardening iron-based material for shear blade and preparation method of shear blade

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The present invention adopts self-hardening iron-based material to prepare the method of shearing blade, specifically implements according to the following steps:

[0042] Step 1: Weigh the C content of 3.5%, Si content of 2.9%, Mn content of 0.3%, P content of no more than 0.06%, S content of no more than 0.02%, Re content of no more than 0.05%, and Mg content according to mass percentage. Not more than 0.04%, the balance being Fe;

[0043] Step 2, putting the raw materials weighed in step 1 into an induction furnace for melting at a temperature of 1500° C. for 35 minutes to obtain molten metal;

[0044] Step 3, transferring the molten metal obtained in step 2 into a transfer bag with a spheroidizer and an inoculant added in advance for spheroidization and inoculation, wherein the transfer bag is added in advance to obtain a qualified molten liquid;

[0045]Wherein, the nodulizer is 1.5% of the molten metal mass obtained in step 1, and the nodulizer is one of granular...

Embodiment 2

[0054] The present invention adopts self-hardening iron-based material to prepare the method of shearing blade, specifically implements according to the following steps:

[0055] Step 1: Weigh the C content of 3.0%, Si content of 2.6%, Mn content of 0.3%, P content of no more than 0.06%, S content of no more than 0.02%, Re content of no more than 0.05%, and Mg content according to mass percentage. Not more than 0.04%, the balance being Fe;

[0056] Step 2, putting the raw materials weighed in step 1 into an induction furnace for melting at a temperature of 1600° C. for 10 minutes to obtain molten metal;

[0057] Step 3, transferring the molten metal obtained in step 2 into a transfer bag with a spheroidizer and an inoculant added in advance for spheroidization and inoculation, wherein the transfer bag is added in advance to obtain a qualified molten liquid;

[0058] Wherein, the nodulizer is 1.3% of the molten metal quality obtained in step 1, and the nodulizer is one of gran...

Embodiment 3

[0064] The present invention adopts self-hardening iron-based material to prepare the method of shearing blade, specifically implements according to the following steps:

[0065] Step 1: Weigh the C content of 3.3%, Si content of 2.5%, Mn content of 0.1%, P content of no more than 0.06%, S content of no more than 0.02%, Re content of no more than 0.05%, and Mg content according to mass percentage. Not more than 0.04%, the balance being Fe;

[0066] Step 2, putting the raw materials weighed in step 1 into an induction furnace for melting at a temperature of 1400° C. for 60 minutes to obtain molten metal;

[0067] Step 3, transferring the molten metal obtained in step 2 into a transfer bag with a spheroidizer and an inoculant added in advance for spheroidization and inoculation, wherein the transfer bag is added in advance to obtain a qualified molten liquid;

[0068] Wherein, the nodulizer is 1.5% of the molten metal mass obtained in step 1, and the nodulizer is one of granula...

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Abstract

The invention discloses a self-hardening iron-based material for a shear blade. The self-hardening iron-based material is prepared from the following raw material components in percentage by mass: 3.0%-4.0% of C, 2.0%-3.5% of Si, 0.1%-0.6% of Mn, not more than 0.06% of P, not more than 0.02% of S, not more than 0.05% of Re, not more than 0.04% of Mg and the balance of Fe. The self-hardening iron-based material solves the problem that the prior carbon steel and alloy steel blade loses wear resistance and fatigue resistance due to movement or loss of the carbon layer and the hardening layer. Thepreparation method of the shear blade is simple in process, the manufacturing and processing cost of the material is greatly reduced, and the preparation method has good practical value.

Description

technical field [0001] The invention belongs to the technical field of shearing tool materials, and in particular relates to a self-hardening iron-based material for a shearing blade, and also relates to a method for preparing a shearing blade by using the self-hardening iron-based material. Background technique [0002] my country is the world's largest producer and consumer of scrap steel. With the vigorous development of the steel industry, self-produced scrap steel cannot meet the production demand, and the amount of recycled scrap steel is increasing year by year. The main sources of recycled scrap are processing scrap and depreciation scrap, among which depreciation scrap is the largest source of recycled scrap, and it is also the most difficult to recycle. [0003] After the steel scrap enters the site, most of it needs to be shortened by hydraulic shears (crocodile shears, gantry shears and box shears, etc.) or combined punching and shearing machines. The sheet meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04B23D35/00C21D9/18C22C33/04
CPCB23D35/00C21D9/18C22C33/04C22C38/002C22C38/02C22C38/04
Inventor 时胜利蒋百铃王子逾闫芳园
Owner XIAN UNIV OF TECH
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