CN103667848A

CN103667848A - Manufacturing method of abrasion-resistant alloy

Info

Publication number: CN103667848A
Application number: CN201310736375.XA
Authority: CN
Inventors: 陈立军
Original assignee: ZHENJIANG DONGYI MACHINERY Co Ltd
Current assignee: ZHENJIANG DONGYI MACHINERY Co Ltd
Priority date: 2013-12-29
Filing date: 2013-12-29
Publication date: 2014-03-26
Anticipated expiration: 2033-12-29
Also published as: CN103667848B

Abstract

The invention relates to a manufacturing method of an abrasion-resistant alloy, which comprises the following steps of: 1) adding powder into a 1% zinc stearate lubricant for stirring and mixing, and 2) adding a 1-2% forming agent into a mixed material for uniform mixing, and granulating with a granulator into the particle size of 40-60 meshes, wherein the powder comprises the following components by mass percentage: 30-40% of chromium carbide (Cr3C2) powder with the particle size of 10-35 micrometers, 5-10% of TiC powder with the particle size of 10-35 micrometers, 40-45% of Fe powder with the particle size of 180 meshes, 5-10% of Ni powder with the particle size of 300 meshes, 2.5-3.5% of Si and 0.7-1.5% of Mn. The abrasion-resistant alloy can be in high-strength connection with a hammer body conveniently, the thickness of an abrasion-resistant layer can be selected freely, the service life of an abrasion-resistant hammer is prolonged, the outage factor of equipment is reduced, and the purity of the ground material is improved.

Description

A kind of manufacture method of wear resistant alloy

Technical field

The present invention relates to a kind of wear resistant alloy for Mechanical Crushing processing, particularly the manufacture method of a kind of feed manufacturing machine alloy wear-resisting cutter wear resistant alloy material used.

Background technology

Beater disintegrating machine is to use at present the widest a kind of pulverizer, and it is higher that it spends electric product volume, and versatility is good.Beater disintegrating machine is that the industrial sectors such as pharmacy, food, chemical industry, scientific research, metallurgy pass through high speed shear, hammering under the driving of blast air by material or ore, through the filtration of stainless steel mesh and a kind of high-efficiency appliance of required pulvis, this equipment has that temperature is low, noise is little, efficiency high.

Hammer leaf and rotor are that hinged, metallic foreign body enters after pulverizer, just break up sieve, Serious Accident can not occur, during work, material enters crushiing chamber from intake mechanism, under the strike of the hammer leaf of high speed rotary, fly to tooth plate, after rebounding with tooth plate collision, be again subject to the strike of hammer leaf, between compass screen surface and hammer leaf, feed is subject to again strong friction simultaneously, under strike collision and friction effect repeatedly, material is pulverized gradually.

Hammer leaf is a kind of strength member of beater disintegrating machine, and its wear resistance is directly connected to the operational efficiency of this equipment.Traditional hammer leaf adopts 45# steel matrix more, then at the position that need to increase wear resistance, with tungsten carbide filler rod, carry out the wear resistance that built-up welding processes to increase it, but high temperature built-up welding is processed and is existed weld layer thickness not thick, and welding joint place welding interior stress is large, welds the problems such as wearing layer can come off.The present invention relates to a kind of wear resistant alloy hammer leaf material for hammer leaf crusher; this material can carry out high strength with hammer leaf matrix easily and be connected; and can choose at random the thickness of wearing layer; improved the work-ing life of anti-abrasive hammer sheet, reduced equipment downtime rate and improved by the purity of comminuting matter.

Summary of the invention

The manufacture method that the object of this invention is to provide a kind of wear resistant alloy for Mechanical Crushing processing, specifically comprises the steps:

1) high-abrasive material comprises

Chromium carbide (Cr3C2) powder: granularity 10-35um, mass ratio: 30%-40%;

TiC powder: granularity 10-35um, mass ratio: 5%-10%;

Fe powder: granularity 180 orders, mass ratio: 40%-45%;

Ni powder: granularity 300 orders, mass ratio: 5%-10%;

Si: mass ratio: 2.5%-3.5%;

Mn: mass ratio: 0.7-1.5%;

2) after being packed into ball grinder and add lubricant stearic acid zinc 1%, mixes in each component metals powder time 3-5 hour.

3) by adding the forming agent polyvinyl alcohol of 1-2% to stir in mixed material, with tablets press, granulate, granularity is 40-60 order.Powder after granulation dries, and obtains standby powder.

Above-mentioned powdered alloy through forming and sintering processing can carry out high strength with hammer leaf matrix easily and be connected, and more mold exchange changes the thickness of wearing layer.This material has improved the work-ing life of anti-abrasive hammer sheet, has reduced equipment downtime rate and has improved by the purity of comminuting matter.

Embodiment

For a wear resistant alloy material for Mechanical Crushing processing, process steps is as follows:

1) by Cr3C2 powder mass ratio: 38%, TiC powder mass ratio: 7%, Fe powder mass ratio: 43%, Ni powder mass ratio: 8%, Si powder mass ratio: 3%, Mn powder mass ratio: mix mixing time 5 hours after each component metals powder of 1% packs ball grinder into and adds lubricant stearic acid zinc 1%.

2) forming agent (polyvinyl alcohol) that adds 1.5% in mixed material is stirred, with tablets press, granulate, granularity is 60 orders.

3) powder after granulating is dried, obtain standby powder;

Above-mentioned wear resistant alloy is that to take carbide Cr3C2 powder and the TiC powder of high rigidity refractory metal be hard phase, and iron (Fe) nickel (Ni) of take is Binder Phase, and with Si, Mn is as the auxiliary a kind of wearing composite material of preparation mutually that adds.The performance of the size of the ratio of hard phase and Binder Phase and hard-phase particles being carried out to adjusting meeting alloy has a significant impact.Along with reducing of hard phase content, the flexural strength of material significantly improves.Its connectivity improves, and the unrelieved stress after welding reduces.In material, adopt coarse grained wear-resisting carbide, be conducive to the maintenance difficult drop-off of abrasion resistant particles in bonded metal, increase the durability of material.

The present invention is not limited to above-described embodiment; on the basis of technical scheme disclosed by the invention; those skilled in the art is according to disclosed technology contents; do not need performing creative labour just can make some replacements and distortion to some technical characterictics wherein, these replacements and distortion are all in protection scope of the present invention.

Claims

1. a manufacture method for wear resistant alloy, is characterized in that comprising the steps:

1) add 1% Zinic stearas lubricant to be uniformly mixed in the following powder of composition:

Chromium carbide (Cr3C2) powder: granularity 10-35um, mass ratio: 30%-40%;

TiC powder: granularity 10-35um, mass ratio: 5%-10%;

Fe powder: granularity 180 orders, mass ratio: 40%-45%;

Ni powder: granularity 300 orders, mass ratio: 5%-10%;

Si: mass ratio: 2.5%-3.5%;

Mn: mass ratio: 0.7-1.5%;

2) by adding the forming agent of 1-2% to mix thoroughly in mixed material, with tablets press, granulate, granularity is 40-60 order.

2. the manufacture method of wear resistant alloy according to claim 1, is characterized in that: described in to be uniformly mixed the time be 3-5 hour.

3. the manufacture method of wear resistant alloy according to claim 1, is characterized in that, described forming agent is polyvinyl alcohol.