Background technology
Metallic fiber has unique performance and extensive purposes with organic as inorfil.Metallic fiber has goodGood conduction, heat conduction, magnetic conduction and resistance to elevated temperatures, and manufacture method is simpler, and cost price is cheap.Using metallic fiber to fill outThe composite material of agent is filled before civilian industry such as electronics, chemical industry, machinery, weaving, food, medical department have opened up wide applicationScape.Applied metal fibrous composite is also imperative in civilian industry.Metallic fiber is as a kind of emerging fibrous materialIt has been subjected to the attention of all trades and professions.
Metallic fiber has been seen varied in appearance.There are stainless steel, carbon steel, cast iron, copper, aluminium, nickel, siderochrome by material pointAluminium alloy, high temperature alloy etc..It is divided into long fibre, staple fiber, crude fibre, fine fibre, steel wool, heterotypic fibre etc. by shape.
In filter core field, the filter core of fixed particle is particularly filtered, among use, the dust filtered out is easily bonded inOn fiber（Mainly inorfil and organic fiber）, cleaning is inconvenient, the short life that filter core uses.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, there is provided a kind of titanium alloy metallic fiber, it is describedTitanium alloy material is according to mass percent, including following element：C is 0.04-0.05%, Al 1.0-2.0%, V 0.20-0.30%th, Mo 2.0-2.5%, Si 0.8-1.2%, Ag 0.1-0.3%, Zr 0.8-1.2%, surplus are Ti and other miscellaneousMatter.
As an improvement, titanium alloy material includes the P and S that mass fraction is less than 0.024%.
As an improvement, the titanium alloy is by mass percentage, including following alloying element：C is 0.04%, Al 1.7%, V 0.26%, Mo 2.2%, Si 0.9%, Ag 0.27%, Zr 1.0%, surplus are Ti and other impurity.
The step of preparation of metallic fiber disclosed by the invention, is as follows：
1）Raw material is weighed by component percentages, using the preparation process of existing smelting titanium alloy, is melted in vaccum sensitive stoveRefining casting, obtains the titanium alloy strand for meeting alloying component requirement；
2）Titanium alloy strand is subjected to removing surface, is subsequently placed in vacuum furnace and is heated to 850-870 DEG C, removes alloy castingThe oxide skin on base surface, obtains forging blank, wherein heating rate control is in 120 DEG C/h；
3）Forging blank is continued to be heated to forging temperature to be forged, obtains forge piece；
4）Forge piece is after heat treatment shaped for forming filiform, between a diameter of 1mm-20mm；
5）One layer of uniformly continuous is obtained in wire surface by double glow plasma surface alloying technique oozes ag alloy layer；
6）After the completion of step 5, metal is placed in heat-treatment furnace after carrying out temper；
7）Stretching forms titanium alloy metallic fiber, and the stretching uses the prior art.
In certain embodiments, secondly metallic fiber of the invention can also be directly ejected into cold by material vacuum meltingBut system is molded, and the tensile strength of fiber bigger after Overheating Treatment, fiber is more fine and close, among some purposes,Conductivity higher.
As an improvement, in step 3, forging temperature is 1300-1350 DEG C, and starting forging temperature is 1200 DEG C, stopping forging temperature is950℃。
As an improvement, after forging blank reaches forging temperature, it will forge blank upsetting pull using forge press and become shape forgingForging base is formed, wherein, fire time is 3, and forging ratio is controlled in 5.8-6.1；Forging base be cooled to stop forge temperature after, continue to send to oil pressureUpsetting pull deformation is forged into certain thickness forge piece in quick forging machine, and fire time is 4, and forging ratio is controlled in 1.5-1.8.
As an improvement, in step 4, the temperature of heat treatment is 800-830 DEG C, soaking time 1-2h, then with furnace coolingBut to room temperature.
As an improvement, in steps of 5, the thickness for oozing ag alloy layer is 5-20 μm.
As an improvement, in step 6, temper carries out under vacuum, the temperature of temper is 600-650DEG C, 2-3h is kept the temperature, is then air-cooled to room temperature.
As an improvement, a diameter of 5-30 μm of titanium alloy metallic fiber.
Embodiment
With reference to embodiment, the present invention is described in detail.
In order to which the present invention is better described, table 1 lists the component content of section Example titanium alloy：（The following exampleThe surface of the sealing cover of 1-5, which does not have, oozes ag alloy layer, and the surface of the sealing cover of embodiment 6 has 30 μm to ooze ag alloy layer）
Note：The constituent of embodiment 6 does not include oozing ag alloy layer.
Metallic fiber is prepared by the way that the material of above-described embodiment is carried out shaping, quotes metallic fiber among filter coreThe filtering after using 6 months to dust of a diameter of metallic fiber between 5-30 μm, prepared by contrast, embodiment 1-5Performance can reach more than 95%, and using filterability after 1 year more than 90%, embodiment 6 is about 90% using filterability after 6 months, is madeIt is more than 80% to the filterability of dust with after 1 year.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present inventionAll any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.