CN-118491203-B - Three-dimensional metal fabric for unidirectional filtration and preparation method thereof

Abstract

The invention provides a three-dimensional metal fabric for unidirectional filtration and a preparation method thereof, wherein three metal drawn fibers with different wire diameters are respectively prepared into metal yarns, and then respectively weaving the three metal yarns to form metal fabrics with different warp and weft densities, and finally sequentially overlapping and sintering the three metal fabrics to obtain the three-dimensional metal fabric for unidirectional filtration. The invention selects three kinds of metal fibers with different filament diameters for spinning, then weaves the three kinds of yarns with different specifications into the plain weave structure woven fabric with different warp and weft densities, the three kinds of woven fabrics have different porosity structures and different filtering precision, and simultaneously have stronger durability, wear resistance, warp and weft biaxial stretching fracture strength and excellent flame retardance, and finally the plain weave fabrics with different porosities are sequentially stacked and sintered to form the filtering fabric with pore gradient, thereby realizing the unidirectional liquid filtering function and optimizing the filtering effect.

Inventors

• ZHANG GE
• GUO WENLONG
• LI ERHU
• HOU LIQIANG
• CHEN WENDOU
• LU YAO
• MOU XIN
• XU WEI
• SHI DAN

Assignees

• 西安菲尔特金属过滤材料股份有限公司

Dates

Publication Date

20260512

Application Date

20240426

Claims (5)

1. 1. The preparation method of the three-dimensional metal fabric for unidirectional filtration is characterized in that three kinds of metal drawn fibers with different wire diameters are respectively made into metal yarns, then the three kinds of metal yarns are respectively woven to form the metal fabric with different warp and weft densities, and finally the three kinds of metal fabrics are sintered after being overlapped according to the sequence of the warp and weft densities gradient, so that the three-dimensional metal fabric for unidirectional filtration is obtained; Wherein, the wire diameters of the three metal drawing fibers with different wire diameters are respectively 12-25 mu m, 8-16 mu m and 2-8 mu m, and the metal drawing fibers are stainless steel fibers or iron-chromium-aluminum fibers; respectively adopting a plain weaving method to manufacture three metal yarns into metal fabrics with different warp and weft densities; The plain weave densities of the three metal yarns are respectively: 5-10 warp densities and 5-10 weft densities; Warp density 7-12 roots/cm, weft density 7-12 roots/cm; warp density is 10-15 roots/cm, weft density is 10-15 roots/cm.
2. 2. The method for producing a three-dimensional metal fabric for unidirectional filtration according to claim 1, wherein the drawn metal fibers are sequentially drawn and cut, carded, drawn, roving, spun yarn, and self-wound to produce a metal yarn.
3. 3. The method for preparing a three-dimensional metal fabric for unidirectional filtration according to claim 1, wherein the specifications of the metal yarns made of the metal drawn fibers with three different filament diameters are 290-320tex, 180-240tex and 90-120tex, respectively.
4. 4. The method for preparing the three-dimensional metal fabric for unidirectional filtration according to claim 1, wherein the sintering process parameters are 980 ℃ to 1120 ℃ and the heat preservation time is 4 to 5 hours.
5. 5. A three-dimensional metal fabric for unidirectional filtration, characterized in that it is prepared by the preparation method according to any one of claims 1 to 4.

Description

Three-dimensional metal fabric for unidirectional filtration and preparation method thereof Technical Field The invention belongs to the application fields of textile design, metal filtering products and the like, and particularly relates to a three-dimensional metal fabric for unidirectional filtering and a preparation method thereof. Background With the continuous development of the industrial level, the air environment and the fresh water environment are greatly polluted, and if the air environment and the fresh water environment are not protected and controlled, the air environment and the fresh water environment are punished by nature. Therefore, the invention and design of the filtration product becomes important. However, the metal filtering products on the market at present are mostly made of metal fibers through a non-woven technology design, for example, a metal fiber felt for filtering is prepared in a needle punching mode as disclosed in Chinese patent publication No. CN107119386A, and a metal fiber felt for filtering is prepared in a dry mode or a wet mode as disclosed in Chinese patent publication No. CN103978216A, and the metal fiber felt for filtering is made of metal short fiber mesh cloth felt in all the modes, so that the filtering products are difficult to filter effectively for a long time, have low strength and service life, and are easy to break and fail in filtering precision. Therefore, there is an urgent need for a product for unidirectional filtration that has high strength, long life, and can operate in a high temperature environment or in an environment with corrosive gas. Disclosure of Invention The invention aims to solve the problems in the prior art and provide a three-dimensional metal fabric for unidirectional filtration and a preparation method thereof, which have the characteristics of high temperature resistance, corrosion resistance and high strength and can work in a high-temperature environment or an environment with corrosive gas. The invention is realized by the following technical scheme: According to the first aspect of the invention, a preparation method of a three-dimensional metal fabric for unidirectional filtration is provided, three metal drawn fibers with different wire diameters are respectively made into metal yarns, then the three metal yarns are respectively woven to form the metal fabric with different warp and weft densities, and finally the three metal fabrics are sequentially stacked and sintered to obtain the three-dimensional metal fabric for unidirectional filtration. Further, the method comprises the steps of, And (3) sequentially carrying out stretch-breaking, carding, drawing, roving, spinning and self-winding on the metal drawn fiber to prepare the metal yarn. Further, the method comprises the steps of, The wire diameters of the three metal drawn fibers with different wire diameters are respectively 12-25 mu m, 8-16 mu m and 2-8 mu m. Further, the method comprises the steps of, The metal drawing fiber is stainless steel fiber or iron-chromium-aluminum fiber. Further, the method comprises the steps of, The specifications of the metal yarns made of the three metal drawn fibers with different wire diameters are 290-320tex, 180-240tex and 90-120tex respectively. Further, the method comprises the steps of, Respectively adopting a plain weaving method to manufacture three metal yarns into metal fabrics with different warp and weft densities; The plain weave densities of the three metal yarns are respectively: 5-10 warp densities and 5-10 weft densities; Warp density 7-12 roots/cm, weft density 7-12 roots/cm; warp density is 10-15 roots/cm, weft density is 10-15 roots/cm. Further, the method comprises the steps of, The sintering process parameters are 980-1120 ℃ and the heat preservation time is 4-5h. In a second aspect of the invention, a three-dimensional metal fabric for unidirectional filtration is provided, and the three-dimensional metal fabric is prepared by the preparation method. Compared with the prior art, the invention has the beneficial effects that: according to the invention, firstly, according to the different wire diameters of the metal fibers, three metal fibers with different wire diameter specifications are selected for spinning, so that three yarns with good durability, wear resistance, excellent tensile breaking strength and good flame retardant property can be obtained; The invention adopts the plain weave technology to weave three kinds of yarns with different specifications into the plain weave structure woven fabric with different warp and weft densities, and the three kinds of woven fabrics have different porosity structures, different filtering precision, stronger durability, wear resistance, warp and weft biaxial stretching breaking strength and excellent flame retardant property; According to the invention, the plain fabrics with different porosities are sequentially stacked in a stacking manner to form the filtering f