CN103265757B

CN103265757B - Novel alloy

Info

Publication number: CN103265757B
Application number: CN201310212503.0A
Authority: CN
Inventors: 江邦寿
Original assignee: CHUZHOU HAOYU SLIDING BEARINGS Ltd
Current assignee: CHUZHOU HAOYU SLIDING BEARINGS Ltd
Priority date: 2013-05-31
Filing date: 2013-05-31
Publication date: 2015-04-29
Anticipated expiration: 2033-05-31
Also published as: CN103265757A

Abstract

The invention relates to novel alloy. The novel alloy consists of main components and auxiliary components, wherein the main components consist of the following components in percentage by weight: 15%-25% of magnesium, 8%-16% of aluminum, 5%-10% of lithium, 1%-3% of cobalt, 5%-10% of nickel, 1%-5% of vanadium, 1%-2% of boron, 5%-8% of silicon and 0.5%-1% of titanium; the auxiliary components consist of the following components in percentage by weight: 25%-35% of polypropylene, 15%-25% of a lubricating agent, 10%-15% of inorganic minerals, wherein the melt flow rate of the polypropylene is 50g/minute. Compared with the prior art, the novel alloy has the advantages that (1), the magnesium alloy is not only lower in cost, but also simple in production process, easy to operate and control; (2), the magnetic alloy has better corrosion resistance, higher strength and certain flame resistance, and is relatively stable and capable of satisfying the requirements of electronic products, mechanical products and the like to a certain extent; and (3), the novel alloy has yield strength of 500MPa-600MPa, tensile strength of 1000MPa-1100MPa, HR30T70-HR30T78, and is suitable for rolling and forming of a building and electronic and mechanical machining and manufacturing with high hardness requirements, and good in bending performance.

Description

Wear resistant alloy

Technical field

The present invention relates to alloy field, be specifically related to a kind of novel alloy and preparation method thereof.

Background technology

Magnesium is the lightest structured material, meets the environmental protection such as less energy-consumption, power conservation requirement, thus is often used to prepare alloy at industrial circles such as automobile, electronics, aviations.But magnesium fusing point is low, easy firing, the alloy thus prepared by magnesium is easy own combustion when temperature is close to its burning-point, and presence of fire is dangerous.At present the conventional material supply section that meets preparing anti-flaming function is divided into compound, coating type and sandwich type three class, above-mentioned three classes be respectively add in alloy fire retardant, alloy surface plate and in the alloy between folder on, but fire retardant mostly is toxic substance, its use range of the alloy prepared by the method is subject to serious restriction.Although magnesium alloy is pursued well with the light ductility of its quality, because magnesium itself can react with water, air, therefore magnesium alloy majority is not corrosion-resistant, and it can not use in harsh environment; Secondly, magnesium alloy can not meet the requirement of each side such as metallurgy, electronics, aviation in prior art in wear-resisting, intensity and tension, therefore, limits the promotion and application of magnesium alloy to a certain extent.

Summary of the invention

The present invention, in order to the defect solving that magnesium alloy is inflammable and perishable, not wear-resisting, intensity is low etc., the invention provides a kind of novel alloy.With the addition of boron and titanium in the technical program, the boron of trace forms BN in the alloy, and in austenite grain boundary segregation, is conducive to reducing alloy phase height.Ti is very strong solid N element, utilize the Ti of about 0.5% just can fix the N of in steel less than 0.006%, form the TiN precipitated phase of tiny high-temperature stable, this tiny TiN particle can hinder Austenite Grain Growth during high temperature effectively, also contribute to improving the solid solubility of Nb in austenite, thus indirectly improve the strengthening effect of alloy.

To achieve these goals, technical scheme of the present invention is achieved in that

A kind of novel alloy, it is characterized in that, described alloy is made up of main component and ancillary component, described main component is composed of the following components according to mass percent: magnesium 15-25%, aluminium 8-16%, lithium 5-10%, cobalt 1-3%, nickel 5-10%, vanadium 1-5%, boron 1-2, silicon 5-8%, titanium 0.5-1%, ancillary component is composed of the following components according to mass percent: polipropene 25-35%, lubricant 15-25%, inorganic mineral 10-15%, described polyacrylic melt flow rate (MFR) is 50g/min.

As a modification of the present invention, described lubricant is the one in silicon ester, phosphoric acid ester.

As a modification of the present invention, described inorganic mineral is wollastonite.

As a modification of the present invention, described main component is composed of the following components according to mass percent: magnesium 18%, aluminium 13%, lithium 8%, cobalt 2%, nickel 8%, vanadium 3%, boron 1, silicon 6%, titanium 1%, ancillary component is composed of the following components according to mass percent: polypropylene 20%, lubricant 10%, inorganic mineral 10%, described polyacrylic melt flow rate (MFR) is 50g/min.

A kind of novel alloy, its preparation method comprises the steps:

(1) by described raw material, magnesium, aluminium, lithium, cobalt, nickel, vanadium, boron, silicon, titanium to add in stirrer uniform stirring 10 minutes successively, carry out vacuum intermediate-frequency induction melting again, pour into a mould ingot casting, be milled into Nanoalloy powder after stirring;

(2) the Nanoalloy powder will prepared, with polypropylene, lubricant, inorganic mineral mixes, wherein first by the polypropylene of 1/2nd, the lubricant of 1/2nd, the inorganic mineral mix and blend of 1/3rd 10 minutes, be heated to 150-180 °, then by the polypropylene of remaining 1/2nd, the lubricant of 1/2nd, the inorganic mineral of 2/3rds adds successively, use agitator to stir with the speed of 50 revs/min, continue to be heated to 180-190 °, within 30 minutes, obtain Nanoalloy powder-polypropylene-inorganic mineral mixed solution;

(3) by after above-mentioned mixed solution homogenizing cast ingot, be melting mixing dispersion in the twin screw extruder of 40:1 in length-to-diameter ratio, extrude difform alloy according to demand, described melt mix temperature is 190 DEG C.

Relative to prior art, advantage of the present invention is as follows, 1) not only cost is lower for this magnesium alloy, and production technique simple, be easy to operate and control; 2) this magnesium alloy is corrosion-resistant better, intensity is higher, and there is certain flame retardant resistance, more stable, meet the requirement of electronic product, engineering goods etc. to a certain extent, 3) this novel alloy yield strength is 500-600 MPa, tensile strength 1000-1100 MPa, HR30T 70-78, be applicable to electronics, the mechanical workout making of building roll forming and high rigidity requirement, buckling performance is good.

Embodiment

Below in conjunction with embodiment, the present invention is described in further detail.In following embodiment, the content of each component is weight percentage except indicating especially

embodiment 1

The preparation of 1.1 novel alloys

(1) take according to mass percent: magnesium 15%, aluminium 10%, lithium 5%, cobalt 3%, nickel 10%, vanadium 1%, boron 1%, silicon 5%, titanium 1%, to add in stirrer uniform stirring successively 10 minutes, carry out vacuum intermediate-frequency induction melting after stirring again, pour into a mould ingot casting, be milled into Nanoalloy powder;

(2) the Nanoalloy powder will prepared, with polypropylene 24%, lubricant 16%, inorganic mineral 9% mixes, wherein first by the polypropylene of 1/2nd, the lubricant of 1/2nd, the inorganic mineral mix and blend of 1/3rd 10 minutes, be heated to 150-180 °, then by the polypropylene of remaining 1/2nd, the lubricant of 1/2nd, the inorganic mineral of 2/3rds adds successively, use agitator to stir with the speed of 50 revs/min, continue to be heated to 180-190 °, within 30 minutes, obtain Nanoalloy powder-polypropylene-inorganic mineral mixed solution;

The erosion resistance of 1.2 novel alloys

1.2.1, experimental group and control group are set:

Experimental group: the novel alloy that embodiment 1 prepares

Control group 1:AS41B magnesium alloy

1.2.2 solution and measuring method is configured

Prepare pickling solution according to the method for ISO10271, namely in 300 mL distilled water, add (10.0 ± 0.1) g 90%C3H6O3(analytical pure) then and (5.85 ± 0.005) g NaCl is 2.3 solution dilution to (1 000 ± 10) mL, pH.

According to the standard of the corresponding 1 mL pickling solution of every square centimeter of alloy, in each Glass Containers, add 6.5 mL pickling solutions; Above-mentioned three groups of tested alloys are positioned in the vial of liquid feeding, close; Censorship is taken out place 7 d in the constant water bath box of 37 DEG C after; Inductive coupling plasma emission spectrograph (inductively coupled plasma atomicemission spectroscopy, ICP-AES) is adopted to measure magnesium ion concentration in each test tube.

Tested group	Experimental group	Control group 1
			Magnesium density g/l	0	（158.1±48.6）×10 ^-6

The flame retardant effect of 1.3 novel alloys

The novel alloy of sheet is prepared as experimental group by the method for embodiment 1, by AS41B magnesium alloy as a control group 2, above-mentioned two kinds of alloys are melted respectively at crucible, utilizes EVOC PCI DAS temperature acquisition card collecting temperature, utilize computer determination combustion initiation temperature.

Tested group	Experimental group	Control group 2
			Combustion initiation temperature	930℃	420℃

The hardness of 1.4 novel alloys

The wear resistant alloy prepared by the method for embodiment 1, as experimental group, by AS41B magnesium alloy as a control group 2, is surveyed the hardness of two combination gold respectively and stretches slight, contrasting as follows:

Tested group	Experimental group	Control group 2
			Hardness	30HRC	18HRC
Tensile strength	1000—1100MPa	600 MPa
			Yield strength	500—600 MPa	400 MPa

1.5 result

Can find out that novel alloy prepared by embodiment 1 has good erosion resistance and flame retardant effect, and its wear resistance is better, hardness is higher, and range of application is more extensive.

embodiment 2

Preparation method is identical with mode disclosed in embodiment 1, but the main component of the alloy in the present embodiment is composed of the following components according to mass percent: magnesium 22%, aluminium 8%, lithium 5%, cobalt 1%, nickel 6%, vanadium 1%, boron 1%, silicon 5.5%, titanium 0.5%, ancillary component is composed of the following components according to mass percent: polipropene 25 %, phosphoric acid ester 15%, wollastonite 10%.

embodiment 3

Preparation method is identical with mode disclosed in embodiment 1, but the main component of the alloy in the present embodiment is composed of the following components according to mass percent: magnesium 18%, aluminium 13%, lithium 8%, cobalt 2%, nickel 8%, vanadium 3%, boron 1, silicon 6%, titanium 1%, ancillary component is composed of the following components according to mass percent: polypropylene 20%, phosphoric acid ester 10%, wollastonite 10%.

The above; only to preferred embodiment of the present invention; not other forms of restriction is done to the present invention; any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the Equivalent embodiments of equal change; every disengaging the present invention program content; according to technical spirit of the present invention to any simple modification made for any of the above embodiments, equivalent variations and remodeling, all drop in protection scope of the present invention.

Claims

1. a wear resistant alloy, it is characterized in that, described alloy is made up of main component and ancillary component, described main component is composed of the following components according to mass percent: magnesium 15-25%, aluminium 8-16%, lithium 5-10%, cobalt 1-3%, nickel 5-10%, vanadium 1-5%, boron 1-2, silicon 5-8%, titanium 0.5-1%, ancillary component is composed of the following components according to mass percent: polipropene 25-35%, lubricant 15-25%, inorganic mineral 10-15%, described polyacrylic melt flow rate (MFR) is 50g/min.

2. wear resistant alloy according to claim 1, is characterized in that, described lubricant is the one in silicon ester, phosphoric acid ester.

3. wear resistant alloy according to claim 1, is characterized in that, described mineral substance is wollastonite.

4. the wear resistant alloy according to claim 1-3, it is characterized in that, described main component is composed of the following components according to mass percent: magnesium 18%, aluminium 13%, lithium 8%, cobalt 2%, nickel 8%, vanadium 3%, boron 1, silicon 6%, titanium 1%, ancillary component is composed of the following components according to mass percent: polypropylene 20%, lubricant 10%, inorganic mineral 10%, described polyacrylic melt flow rate (MFR) is 50g/min.

5. the wear resistant alloy according to any one of claim 1-3, its preparation method comprises the steps:

(1) according to the quality proportioning of mentioned component, first by magnesium, titanium, lithium, cobalt, nickel, manganese, yttrium, tungsten, stirs after vanadium mixing, after stirring in a vacuum frequently induction melting, pour into a mould ingot casting, be milled into Nanoalloy powder;

(2) the Nanoalloy powder will prepared, with 1/2nd polypropylene, 1/3rd lubricants, the inorganic mineral of 1/2nd, mixing, use agitator with the speed of 30-50 revs/min stir,

(3) stir after 20 minutes, add the polypropylene of 1/2nd successively, 2/3rds lubricants, the inorganic mineral of 1/2nd, Heating temperature to a 150-200 ° stirring obtains Nanoalloy powder-polypropylene-inorganic mineral mixed solution for 15-25 minutes;

(4) by after above-mentioned mixed solution homogenizing cast ingot, be melting mixing dispersion in the twin screw extruder of 50:1 in length-to-diameter ratio, extrude difform alloy according to demand, described melt mix temperature is 180 DEG C.

6. the purposes of the wear resistant alloy according to any one of claim 1-3, is characterized in that, for the preparation of wear-resisting container.