CN1924059A

CN1924059A - Modified high manganese steel

Info

Publication number: CN1924059A
Application number: CN 200610048665
Authority: CN
Inventors: 杜万锁; 杜雨默
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-05
Filing date: 2006-09-05
Publication date: 2007-03-07
Anticipated expiration: 2026-09-05
Also published as: CN100453677C

Abstract

The invention discloses a modified high manganese steel, which comprises the following parts: 1.1-1.4% C, 15-20% Mn, 0.5-1% Si, 0.3-2.5% Cr, 0.1-5% Re and Fe. The hardness of steel is improved by HV100-500 with higher impaction-proof and abrasion-proof property, which lengthens the lifetime by 2-4 times.

Description

Modified high manganese steel

Technical field

The present invention relates to a kind of alloy material, more particularly, relate to a kind of high-wearing feature high manganese steel material.

Background technology

Manganese steel is the time-honored high-abrasive material of a kind of use, its production technology development in recent years is rapid, because it has higher impelling strength and work hardening characteristic, still is widely used in the product in the operations such as grinding, fragmentation, loading such as cement, metallurgy, mine, electric power, coal so far.

Because former high mangaenese steel and steel alloy shock resistance and wear resisting property are not ideal, cause its loss in use higher.In order further to improve high mangaenese steel shock resistance and wear resisting property, prolong its work-ing life, seek to be applicable to the new steel grade under the different operating modes, the researchist of various countries is at the remodeling of high mangaenese steel with carried out a series of research work aspect the alloy more in recent years.For example: introduce in Japanese Patent JP60～43422, in high mangaenese steel, add (weight ratio) Cr:0～3%, Ni:0～4%, Mo:0～2.5%, Ti:0.05%～0.09%, V:0～0.05% (Ti+V ≈ 0.05%～0.14%) is used for improving wear resistance.U.S. Pat 4494988 is introduced, and adds (weight ratio) Cr:4%～6% in Mn13, certain content of Ni:4%～6% and N, and its wear resistance also increases.Russian patent SU850725 is presented in and adds (weight ratio) Cr:0.5～2% in the high mangaenese steel, V:0.1%～0.5%, and Ti0.2%～0.6%, Nb:0.1%～0.3%, N 0.5～0.65%, also can improve its wear resisting property.

This shows that in order to improve the wear resisting property of high mangaenese steel, people have added more more valuable rare alloy material in high mangaenese steel, though improved the manganese steel performance, but cost also increases considerably thereupon, and production technique is also complicated more, and its cost performance is not ideal.

Summary of the invention

The objective of the invention is to overcome the deficiency of former high mangaenese steel and steel alloy, provide a kind of production cost low, production technique is simple, and wear resisting property is good, the modified high manganese steel of long service life.

The present invention is a kind of modified high manganese steel of synthetic by the weight ratio of adjusting manganese in the former high mangaenese steel (Mn), carbon (C), silicon (Si), iron (Fe).Wherein:

Manganese (Mn): be in order to stablize Ovshinsky spare, to make the toughness of foundry goods reach requirement; Its shock peening in use in addition makes that hardness improves, frictional coefficient increases, and is more wear-resisting.

Carbon (C): carbon, manganese combination obtain quenching hardness.

Silicon (Si): adding a certain amount of silicon, is to give vent to anger for deoxidation.

It forms weight ratio: carbon (C) 1.1%～1.4%, and manganese (Mn) 15%～20%, silicon (Si) 0.5%～1%, all the other are iron (Fe).

In order to make foundry goods more wear-resisting, can add a certain amount of chromium and rare earth.Wherein:

Chromium (Cr): crystal grain thinning makes foundry goods remove impurity.

Rare earth (Re): crystal grain thinning makes foundry goods remove impurity.

It forms weight ratio: carbon (C) 1.1%～1.4%, and manganese (Mn) 15%～20%, silicon (Si) 0.5%～1%, chromium (Cr) 0.3%～2.5%, rare earth (Re) 0.1%～5%, all the other are iron (Fe).

The weight ratio of the best proportioning of the present invention is: carbon (C) 1.2%～1.3%, and manganese (Mn) 17%～19%, chromium (Cr) 1%～2%, rare earth (Re) 2%～3%, silicon (Si) 0.6%～0.8%, all the other are iron (Fe).

Manufacture craft of the present invention is earlier Q195 or Q235 carbon steel steel scrap to be dropped into smelting furnace in proportion, drop into mid-carbon fe-mn or manganese metal or high carbon ferromanganese, chromium after the fusing more in proportion, pyrotic smelting to 1500 ℃～1700 ℃, add rare earth during tapping, after the cast, insulation is carried out hardening in 1000 ℃～1100 ℃ scopes, water outlet finishing polishing gets final product.

Can pour into liner plate, bar, beater plate, grating, bucket tooth, crawler belt, grip-pad by different moulds, all size gear, tooth plate products such as (Hubei Province plates).

The invention has the beneficial effects as follows: keeping under the constant prerequisite of snappiness, the comparable common high mangaenese steel of hardness improves vickers hardness hv 100～500, thereby improves shock resistance and wear resisting property, and be 2 to 4 times of common high mangaenese steel its work-ing life.For the user reduces production costs, contribute for country is energy-saving and cost-reducing.

Embodiment

Provide embodiments of the invention below.Each component all by weight.

Embodiment 1: carbon (C) 1.1%, and manganese (Mn) 15%, silicon (Si) 0.5%, the crusher swing tooth plate of iron (Fe) 83.4% trial-production can broken hardness be the tough and tensile silicon carbide of vickers hardness hv value 1900～2200.

Embodiment 2: carbon (C) 1.25%, and manganese (Mn) 18%, silicon (Si) 0.7%, the crusher swing tooth plate of iron (Fe) 80.05% trial-production can broken hardness be the tough and tensile silicon carbide of vickers hardness hv value 2000～2300.

Embodiment 3: carbon (C) 1.4%, and manganese (Mn) 20%, silicon (Si) 1%, the crusher swing tooth plate of iron (Fe) 77.6% trial-production can broken hardness be the tough and tensile silicon carbide of vickers hardness hv value 2000～2200.

Embodiment 4: carbon (C) 1.2%, and manganese (Mn) 17%, silicon (Si) 0.6%, chromium (Cr) 0.3%, rare earth (Re) 0.1%, the crusher swing tooth plate of iron (Fe) 80.8% trial-production can broken hardness be the tough and tensile silicon carbide of vickers hardness hv value 1900～2400.

Embodiment 5: carbon (C) 1.25%, manganese (Mn) 18%, silicon (Si) 0.7%, chromium (Cr) 1.5%, rare earth (Re) 2.5%, the crusher swing tooth plate of iron (Fe) 76.05% trial-production can broken hardness be the tough and tensile silicon carbide of vickers hardness hv value 2100～2500.

Embodiment 6: carbon (C) 1.3%, and manganese (Mn) 19%, chromium (Cr) 2%, rare earth (Re) 3%, silicon (Si) 0.8%, the crusher swing tooth plate of iron (Fe) 73.9% trial-production can broken hardness be the tough and tensile silicon carbide of vickers hardness hv value 2200～2500.

Claims

1, a kind of modified high manganese steel is characterized in that, its composition weight ratio is: carbon (C) 1.1%～1.4%, and manganese (Mn) 15%～20%, silicon (Si) 0.5%～1%, all the other are iron (Fe).

2, a kind of modified high manganese steel according to claim 1 is characterized in that, carbon (C) 1.2%～1.3%, and manganese (Mn) 17%～19%, silicon (Si) 0.6%～0.8%, all the other are iron (Fe).

3, any modified high manganese steel according to claim 1 and 2 is characterized in that, adds chromium and rare earth, and its weight ratio is a chromium (Cr) 0.3%～2.5%, rare earth (Re) 0.1%～5%.

4, a kind of modified high manganese steel according to claim 3 is characterized in that, the adding weight ratio is a chromium (Cr) 1%～2%, rare earth (Re) 2%～3%.