Wire mesh made of reinforced fiber and stainless steel wire

A technology of reinforced fiber and stainless steel wire, which is used in mufflers, engine components, machines/engines, etc., can solve the problems of inability to adapt to the high temperature working conditions of automotive post-processors, insufficient turbulence, and high temperature resistance, and achieves high practicality. The effect of value, micro-performance improvement, reliability and stability improvement

Inactive Publication Date: 2016-01-06
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] In order to face the more stringent PM2.5~PM10 particle treatment standards in the future, some traditional filter materials, such as the mesh woven by ordinary metal wires and metal sintered felt, are not enough in disorder and the mass per unit volume is too large. And the disadvantages such as not being able to withstand high temperature are unable to do it; the hook weaving process and equipment of the commercial gas-liquid filter screen are very mature, and its products have been widely used in industry and folk; for example, the gas-liquid filter screen prepared by stainless steel wire can be used As the particle purifier material for automobile exhaust, however, considering the stricter particle limit in the future, new filter materials must be used; and there are wire mesh and gas-liquid filter made of 100% stainless steel wire on the market, and there are also Some stainless steel wires are used as the main body, and other metal or non-metal wires are added to weave to form a ply or mixed-weave gas-liquid filter. For example, 10 strands of stainless steel wire and 1~10 strands of Monel wire can be used, or Polyethylene fiber filaments, or polypropylene fiber filaments, or polytetrafluoroethylene fibers are mixed and braided, and the mesh size distribution of the prepared ply gas-liquid filter is more uniform. However, these existing ply gas-liquid filters on the market Either the cost of the filter is too high, or it cannot adapt to the high-temperature working conditions of the automotive after-processor above 600°C

Method used

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  • Wire mesh made of reinforced fiber and stainless steel wire
  • Wire mesh made of reinforced fiber and stainless steel wire
  • Wire mesh made of reinforced fiber and stainless steel wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Using 10 strands of 0.35mm FeCrAl stainless steel wire, weave a vapor-liquid filter on an industrial vapor-liquid filter weaving machine; after weaving, use tap water and alcohol as a solvent of 1:2, and ultrasonically immerse for 20 minutes at room temperature. Clean oil stains; rinse once with tap water; dry in an oven at 80°C for 1 hour; cut out a 60mm×220mm mesh, visually observe the'thickness' of the mesh is about 2mm, weigh W1=18.698g; put it in distilled water for 5 minutes, take it out, and pour Dry the excess water, weigh W2=19.652g, and calculate the water absorption rate of the carrier sheet according to the following formula R=(W2-W1) / W1=5.1%

Embodiment 2

[0027] Using 10 strands of 0.35mm FeCrAl stainless steel wire, one strand of stainless steel wire is paralleled with 1 strand of carbon fiber bundle. The carbon fiber bundle is a 1K carbon fiber bundle with a monofilament diameter of 5μm after phenolic strengthening treatment. On the vapor-liquid filter weaving machine, mix and crochet into a 10:1 hybrid wire mesh; after weaving, use a 1:2 solvent of tap water and alcohol, and at room temperature, ultrasonically immerse for 20 minutes to remove the resin binder; Rinse once with tap water; dry in an oven at 80°C for 3 hours; cut out 100mm×100mm mesh, visually measure the'thickness' of the mesh is about 5mm, weigh W1=24.844g, put it in distilled water for 5 minutes, take it out, and dry the excess Water, weighed W2=33.953g, the water absorption rate of the carrier sheet R=(W2-W1) / W1=36.67%

Embodiment 3

[0029] 10 strands of 0.35mm FeCrAl stainless steel wire with a diameter of 0.35mm are used. One strand of carbon fiber bundle is used in each stainless steel wire, a total of 10 strands. The carbon fiber bundle is a 1K carbon fiber bundle with a monofilament diameter of 20μm after phenolic strengthening treatment. The industrial vapor-liquid filter screen knitting machine is mixed and crocheted into a 1:1 hybrid wire mesh; after weaving, use tap water and alcohol as a 1:2 solvent, at room temperature, ultrasonic immersion for 30 minutes to remove resin bonding Rinse once with tap water; dry in an oven at 80℃ for 3h; cut out a 100mm×100mm mesh, visually observe that the'thickness' of the mesh is greater than 5mm, weigh W1=38.958g, put it in distilled water for 5 minutes, take it out, and dry the excess Water, weighing W2=107.888g, the water absorption rate of the carrier sheet R=(W2-W1) / W1=176.9%

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Abstract

The invention relates to a screen mesh formed by weaving reinforced fiber and stainless steel wires in a mixed mode. The screen mesh is characterized by including the following steps that (1) stainless steel fiber filaments are made of stainless steel wires with the diameter ranging from 0.2 to 0.4mm, and the reinforced fiber is made of a carbon fiber bundle and a basalt fiber bundle reinforced through phenolic aldehyde or a rope or a carbon fiber bundle and a basalt bundle reinforced through petroleum resin; (2) an industrial screen mesh weaving machine is adopted to conduct mixed crocheting, threads of the stainless steel fiber filaments and the reinforced fiber filaments are fed and woven according to the ratio of 10:1-1:1; (3) a wire wheel of the reinforced fiber is added on one side of a wire wheel of the stainless steel wires, and two branches of fiber are fed and woven simultaneously; (4) after weaving is finished, when a binder is phenolic resin, a solvent composed of tap water and alcohol according to the ratio of 1:2 is used for removing the binder, at the room temperature, ultrasonic rinsing is conducted for 10-20 min; when the binder is petroleum resin, odourless kerosene is used for removing the binder, and ultrasonic rinsing is conducted for 20-30 min at the temperature of 40-50 DEG C; (5) finally, at the temperature of 400-500 DEG C, the mixed woven screen mesh is sintered. The screen mesh has a three-dimensional structure, guarantees the mechanical strength, has a micropore structure, can be used for manufacturing a PM filter and is clever in idea, simple in process, low in cost and the like.

Description

Technical field [0001] The invention relates to a wire mesh mixed with reinforced fibers and stainless steel wires, which is used to prepare carrier materials for DOC, POC, CSF and DPF-like particulate post-processors, and can also be applied to carrier materials for SCR post-processors. Background technique [0002] For the automotive industry, energy conservation and environmental protection is a common problem currently facing the world; although diesel engines have higher fuel economy than gasoline engines, the emissions of diesel engines are 20 to 70 times that of gasoline engines, so the application of diesel engines is subject to certain restrictions. limits; [0003] The pollutants from automobiles mainly include NOX and PM; all particulate matter emissions in the atmosphere, motor vehicle emissions account for the third place in the total, close to 600,000 tons per year; [0004] In the particulate matter emissions of motor vehicles, they are mainly distributed in the range...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/022
Inventor 张克金崔龙许德超陈慧明
Owner CHINA FIRST AUTOMOBILE
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