CN1094992C - Stainless steel fiber material and its processing technology and stainless steel fiber muffler element - Google Patents
Stainless steel fiber material and its processing technology and stainless steel fiber muffler element Download PDFInfo
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- CN1094992C CN1094992C CN99120164A CN99120164A CN1094992C CN 1094992 C CN1094992 C CN 1094992C CN 99120164 A CN99120164 A CN 99120164A CN 99120164 A CN99120164 A CN 99120164A CN 1094992 C CN1094992 C CN 1094992C
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Abstract
The present invention provides stainless steel fiber material for the technical field of an automobile muffler, a fabrication technology thereof and a muffler core produced by the stainless steel fiber. The material is characterized by adopting 1Cr17Mo which is composed of the following chemical components by proportion: 0.06 to 0.08 of C, 0.4 to 0.6 of Si, 0.4 to 0.6 of Mn, less than 0.021 of P, 6.5 to 18 of Cr, 0.75 to 1.2 of Mo, less than 0.2 of Ni and Fe as the allowance. The fabrication technology is carried out on a steel wool cutting device, and the muffler core is formed by coating a stainless steel fiber velour cylinder outside the skeleton. The present invention has the advantages of high temperature oxidation resistance, corrosion resistance, no dreg dropping, effective sound absorption and reduction, rock wool protection, etc. compared with the prior metal fiber and muffler technology.
Description
The invention belongs to the automotive muffler technical field, is a kind of Stainless Steel Fibre and complete processing thereof and stainless steel fiber muffler element.
Automotive muffler requires its internal structure to have measured to the greatest extent sqouynd absorption lowering noise function, and at present, sourdine is to adopt to wrap the method for establishing rock wool in the device shell, but rock wool is under the long-time condition of high temperature, the surface is easy to oxidation and sinter, causes the sourdine damage, and sound absorption coefficient reduces.Consider to adopt the steel fiber liner in the rock wool internal layer, the one, the protection rock wool, the 2nd, strengthen sound absorption.What at first consider employing is the carbon steel fiber, because the carbon steel fiber has its high-specific surface area that forms naturally, obvious to the sqouynd absorption lowering noise effect, but there are two fatal shortcomings in the carbon steel fiber, the one, oxidation at high temperature appears in non-refractory easily, and the sharp-pointed end face of its profiled-cross-section takes place by molten touching, specific surface area reduces, the 2nd, the poor ductility of carbon steel fiber, tensile strength is low, very easily occurs disconnected suede in working angles, cause carbon steel fibrous finished product rate low, coiling device core difficulty.
If adopt existing Stainless Steel Fibre, as 1Cr18Ni9Ti, with reference to GB4086-92 " steel wool fiber " specific surface area, the stainless steel starting material are by hot candied mode, its cross-sectional shape is straight through being the circle of Ф 0.05-Ф 0.08, and in hot candied process owing to be crimp, fiber surface is provided with fish scale shape fiber, fiber surface is smooth, specific fiber surface is long-pending little, and hot candied rounded section fiber specific surface area is as follows: diameter of section mm 0.15 0.13 0.12 0.09 0.08 0.07 0.06 0.05 specific surface area m2/g＜0.004＜0.004＜0.005 0.006＜0.007＜0.008 0.01＜0.014
If adopt cutting to handle, specific surface area is as follows: equivalent diameter mm 140-220 100-180 70-130 46-75 41-61 30-50 20-30 specific surface area m2/g＞0.016＞0.02＞0.029＞0.048＞0.06＞0.072＞0.118
Can find out that from the contrast of above-mentioned two groups of data the Stainless Steel Fibre specific surface area of cutting is long-pending much bigger than the specific fiber surface of drawing.Therefore can think that Stainless Steel Fibre passes through Cutting Process, the fiber after handling than drawing process more is applicable to sqouynd absorption lowering noise.
Existing 1Cr8Ni9Ti; The Stainless Steel Fibre high temperature oxidation resistance is poor, and is not corrosion-resistant, and do not exist disperse granulous pearly-lustre to stop unfavorable sound absorption on ferrite matrix.
At present, carbon steel fiber cutting apparatus is all on sale both at home and abroad, but the cutting of the Stainless Steel Fibre of moulding is provided with as yet and does not occur, find in German RG-5 steel wool cutting apparatus actual cut through 1Cr8Ni9Ti, this starting material also exist cloth inhomogeneous except that above-mentioned shortcoming, and cutting resistance is big, easily fall slag, volume recovery is low.
Based on the problems referred to above and analysis, the purpose of this invention is to provide a kind of resistance to high temperature oxidation, corrosion-resistant, be fit to cutting, fall the high stainless steel metal fibre material of the less volume recovery of slag.
Second purpose of the present invention provides the machining fibre technology process under this material.
The 3rd purpose of the present invention provides a kind of automotive muffler device core that adopts this stainless steel metal fibre.
Purpose of the present invention realizes, is based on to make tail gas pass through not Steel Wool core, thus the thinking of sqouynd absorption lowering noise and protection rock wool.
Stainless steel fiber material of the present invention adopts 1Cr17Mo to be made up of following composition and proportioning: (proportioning adopts equivalent per-cent) Chemical Composition C Si Mn P S Cr Mo Ni Fe content 0.06-0.08 0.4-0.6 0.4-0.6＜0.03＜0.021 6.5-18 0.75-1.2＜0.2 surplus
This stainless steel 1cr17M has following mechanical property:
Tensile strength α=880-1000N/mm2, unit elongation ε=6-12%.
This Stainless Steel Fibre is a profiled-cross-section, and its cross-sectional shape is a trilateral, wedge shape, semicircle and irregular Polygons.
The machining fibre technology of 1cr17Mo of the present invention carries out on the steel wool cutting apparatus, wherein, uses high speed steel M2 in the working angles, tooth pitch T-0.18-0.25mm zig-zag cutter.
ψ=3.0 ± 0.05, material 1Cr17Mo line footpath
A thickness mm 2.3-2.4 1.7-1.8 1.1-1.2 0.70-0.85 surplus the chopping speed 30-36m/min sequence number 1234
The chopping process is used 2#M2 chopping cutter, and cutting-tool angle α=40～42 a ° equivalent diameter is 46-130 μ m, and tool change time is no more than five minutes at interval, can not move back two during tool changing simultaneously to fix a cutting tool; Aim at section when connecing thread, Stainless Steel Wire does not allow to turn round strength, during butt welding according to silk footpath, butt welding machine gap and butt welding machine electric current when surplus thickness is adjusted; The scarce precursor of each station is no more than three in the chopping process.Chopping technology is referring to the Stainless Steel Fibre complete processing in detail.
Automotive muffler device core of the present invention is that Stainless Steel Fibre suede is turned to tubular, and this tubular can be rectangle, trapezoidal, circular cylinder, is used for liner at sourdine rock wool internal layer.Used Stainless Steel Fibre adopts aforementioned 1Cr17M.Material, fiber suede tube internal layer is provided with the spiral skeleton, and the spiral skeleton adopts the Stainless Steel Wire clout to turn to tubular, thickness requirement b=0.70-0.85mm, the skeleton hand of spiral is left-handed.
Because the present invention has taked technique scheme, compares with the sourdine technology with existing steel fiber, has resistance to high temperature oxidation, and is corrosion-resistant, there is not the slag of falling, effectively sqouynd absorption lowering noise, advantages such as protection rock wool.
Below in conjunction with accompanying drawing and example specific structural features of the present invention is described further.
Fig. 1 represents Stainless Steel Wire is processed into the cutting principle synoptic diagram of fiber.
Fig. 2 represents the parcel schematic diagram of Stainless Steel Wire on the steel wool cutting machine.
Fig. 3 represents chopping cutter structure synoptic diagram.
Fig. 4 represents muffler element skeleton structure synoptic diagram.Exquisite craftsman
Fig. 5 represents the muffler element structural representation.
Fig. 6 represents the acoustic wave filter structure synoptic diagram.
The stainless steel starting material use steel wool cutting specific equipment, use the zig-zag dedicated tool, the Stainless Steel Fibre cutting principle as shown in Figure 1, Stainless Steel Wire is climbed and is located at moving linearly between the wire wrapping wheel 1.1, is subjected to the cutting of cutter 1.2.As shown in Figure 2, Stainless Steel Wire 2.1 is through swage 2.2, at first by wire wrapping wheel 2, pass through wire wrapping wheel 1 again behind 16 of wrapping wires between the two-wheeled, steel wire, is being pulled out by wire wrapping wheel 3 after 16 between wire wrapping wheel 4 and 3 directly around to wire wrapping wheel 4 equally by wire wrapping wheel 1, by guide deflection sheave 2.3 around to wire wrapping wheel 6, behind full 16 rhizoids, pulling out directly around to wire wrapping wheel 8 between wire wrapping wheel 6 and 5, completely pulling out around to wire drawing mechanism 2.5 by wire wrapping wheel 7 after 16 at wire wrapping wheel 8 and 7 spaced windings by wire wrapping wheel 5.The fiber that cutting is come out is wrapped on the fiber collecting mechanism 2.4.
Stainless Steel Wire is subjected to the effect moving linearly of rotor wheel frictional force.
The zig-zag cutter as shown in Figure 3.
The stainless steel starting material are through the cutting of zig-zag cutter, cross-sectional shape becomes the special crosssection that equivalent diameter is φ 0.03-φ 0.23mm by φ 3.0 rounded sections, cross-sectional shape is trilateral, wedge shape, semicircle and irregular Polygons, the Stainless Steel Fibre surface irregularity, fiber surface has increased fiber specific surface area with money squamous fiber.
Because Stainless Steel Fibre is a profiled-cross-section, surface irregularity.The Stainless Steel Fibre specific surface area is big, and its damping action to sound wave strengthens.Stainless Steel Fibre profiled-cross-section sqouynd absorption lowering noise effect can be referring to " profiled-cross-section steel fiber sound absorption coefficient " measurement report.By measurement report as can be seen, profiled-cross-section fiber sound absorption coefficient is more much bigger than rounded section fiber sound absorption coefficient.Stainless Steel Fibre of the present invention has high temperature oxidation resistance.Through testing: 1. 500 ℃ of insulations of test methods test method were not fired in 10 minutes, and color is 2. 700 ℃ of insulations of brassiness did not fire in 10 minutes, and it is blue that color is
Stainless Steel Fibre of the present invention has the feature that starting material adopt 1Cr17Mo.The 1Cr17Mo starting material belong to ferritic stainless steel.Cutting ability has more significantly than 1cr18Ni9Ti to be improved.Mo can not only improve the high-temperature oxidation resistance of material, erosion resistance, and on ferrite matrix disperse granulous perlite, in the starting material drawing process, lamellated ferrite is done fibrous distribution along the drawing direction.Fiber Distribution is even in the 1Cr17Mo material working angles, and cutting resistance is little, and it is light to fall slag, the volume recovery height, and labor strength reduces, volume recovery 7900 cover/tons, labour productivity 180 cover/classes improve 64% and 50% during respectively than use 1cr18Ni9Ti.
The best proportioning chemical analysis of 1Cr17Mo stainless steel material chemical analysis standard GB1220-92 chemical analysis C Si Mn P S Cr Mo Ni Fe content≤0.12≤1.0≤1.0≤0.04≤0.03 16-18 0.75-102＜0.4 surplus 1Cr17Mo stainless steel material chemical composition C Si Mn P S Cr Mo Ni Fe content 0.06-0.08 0.4-0.6 0.4-0.6＜0.03＜0.02 16.5-18 0.75-1.2＜0.2 surplus
Proportioning adopts equivalent per-cent.
Stainless Steel Fibre of the present invention has the feature to the following requirement of mechanical property of material.Tensile strength a=880-1000N/mm2, unit elongation σ=6-12%.The Stainless Steel Wire starting material can not satisfy the requirement that guarantees starting material tensile strength under the machining condition by heat treated mode.Therefore, starting material φ 6.5 Stainless Steel Wires are by rational compression ratio--and the mode of cold drawing improves the tensile strength of starting material φ 3.0 Stainless Steel Wires.In drawing, through suitable temper and pickling.Guarantee φ 6.5 stainless steel starting material in drawing process, fiber distributes along deformation direction, guarantees that the stainless steel starting material are in working angles, cutting resistance is little, and fiber is continuous, and it is few to fall bits, fibrous elasticity is good, and these mechanical propertys of material have guaranteed the smooth cutting of Stainless Steel Fibre in the course of processing.Volume recovery and labour productivity have been guaranteed simultaneously.
Stainless Steel Fibre of the present invention has following feature on complete processing:
Use equipment RG-3 Stainless Steel Fibre cutting production line.RG-3 production linear system is copied German RG-5 steel wool cutting apparatus.RG-5 equipment is mainly used in the machined low carbon steel fiber, and product is used for brake facing (semimetal friction material).
Instrument frock: high speed steel M2 cutter (specification 124 * 58 * 8)
Cooling fluid: the saponification liquor proportioning is 1: 50
Material: 1Cr17Mo.The line footpath
3.0+0.05
Tensile strength: α=880-1000N/mm2, unit elongation: δ=6-12%
Chopping speed: 30-36m/min
On RG-3 main frame production line, use four stations, each station keeps 3-4 cutter, chopping divides four times cuttings, and last is all over a thickness mm 2.3-2.4 1.7-1.8 1.1-1.2 0.70-0.85 surplus the control skeleton silk surplus 0.70-0.85 sequence number 1234
The chopping process is used 2#M2 chopping cutter, and cutting-tool angle α=40～42 a ° equivalent diameter is 46-130 μ m, and tool change time is no more than five minutes at interval, can not move back two during tool changing simultaneously to fix a cutting tool; Aim at section when connecing thread, Stainless Steel Wire does not allow to turn round strength, during butt welding according to silk footpath, butt welding machine gap and butt welding machine electric current when surplus thickness is adjusted; The scarce precursor of each station is no more than three in the chopping process.Chopping technology is referring to the Stainless Steel Fibre complete processing in detail.
The complete processing of Stainless Steel Fibre coiling sourdine core of the present invention has following feature.
Operation: around skeleton-around core-test package
Equipment: c616 lathe
The instrument frock: special-purpose mandrel, silk pressing roll
Material: Stainless Steel Fibre 1Cr17Mo equivalent diameter ψ 0.03-ψ 0.131 is around skeleton
On the c616 lathe, around skeleton, thickness requirement is b=0.70-0.85mm with the Stainless Steel Wire clout, and the skeleton hand of spiral is left-handed, and pitch T=20mm, crest are to the high h=1.2mm of trough, and two ends are smooth circle, and as shown in Figure 4,2 around core
The centering mandrel that is installed on the c616 lathe, the centering silk pressing that is installed rolls, and is contour with mandrel and parallel, by fibre weight requirement weighing, cuts silk and chooses nonconforming wide and short debris, stand-by.Skeleton is contained on the mandrel fixes, guarantee pitch 20mm, two ends are smooth circle.With the tension of the fiber that weighs up, the stand is spared on the wind frame, rolls with silk pressing and gently rolls reality, and look the thickness and the weight apolegamy fiber of skeleton, guarantees that suede is important to ask.The requirement fiber must be evenly smoothly around to skeleton, and fiber should be firm in the internal frame combination, and wall thickness should be even, and franchise is not more than 2mm, and skeleton must shrink back 3-10mm from both ends of the surface.3 test packages
By the strict check of each operation, control each process quality, 100% check of completion back.Hand over inspection qualified back vanning, do not allow bruising.
Sourdine device sketch such as Fig. 5, wherein the external packets of skeleton 5.2 is established Stainless Steel Fibre layer 5.1.Acoustic wave filter structure synoptic diagram such as Fig. 6, wherein enclosure interior is provided with the vapor pipe 6.2 of band mesh, and the external packets of vapor pipe 6.2 is established device core 6.1, is rock wool layer 6.3 between device core 6.1 and the housing.
Silencer core parameter: heavy (gram) L142 142 ± ψ of product type length m m internal diameter mm external diameter mm suede 55+2 ψ 68+2 38,+4L,170 170 ± 2 ψ 55+2 ψ 68+2 45,+4L,135 135 ± 2 ψ 55+2 ψ 68+2 36,+4L,160 160 ± 2 ψ 55+2 ψ 68+2 43,+4L,175 175 ± 2 ψ 55+2 ψ 68+2 45,+5L,238 238 ± 2 ψ 55+2 ψ 68+2 6,0+5,L63 63 ± 1 ψ 45+2 ψ 65+1 45,+5L,125 125 ± 1 ψ 46+20 ψ 59 ± 2 50+5220 * 160 220/160 74 ± 5200/100 * 150 200/100/150 54 ± 5
Claims (2)
1, a kind of complete processing of stainless steel fiber material, its feature adopts the 1Cr17Mo stainless steel fiber material, this material is to use Stainless Steel Wire, pass through compression ratio---the mode of cold drawing, line directly is Ф=3.0 ± 0.05 after making its material reach cold drawing, tensile strength is α=800-1000N/mm2, the requirement of unit elongation δ=6-12%, the optimum chemical proportioning components of this material is that the content of C is 0.06-0.08, the content of si is 0.4-0.6, the content of Mn is 0.4-0.6, the content of P is＜0.03, the content of S is＜0.02, the content of Cr is 6.5-18, the content of Mo is 0.75-1.2, and the content of Ni is＜0.2, and surplus is an iron, in drawing, adopt temper and pickling mode, Stainless Steel Wire is in the process of drawing, and fiber distributes along deformation direction, the machining of this material is to carry out on RG-3 steel wool specific equipment, wherein, in working angles, use high speed steel M2 tooth pitch T=0.18-0.25mm zig-zag cutter, chopping speed 30-36m/min, after the cutting of jagsaw toothed tool, make the rounded section of material become the special crosssection that equivalent diameter is Ф 0.03-Ф 0.23mm, cross-sectional shape is a trilateral, wedge shape, half garden shape and irregular Polygons.
2, the complete processing of a kind of stainless steel fiber material as claimed in claim 1, it is characterized in that on the steel wool specific equipment, using four stations, each station keeps 3-4 cutter, chopping divides four times cuttings, and last is all over control skeleton silk surplus 0.70-0.85mm, and specifically the surplus silk of each station thickness is respectively: the 1st station is 2.3-2.4mm, the 2nd station is 1.7-1.8mm, the 3rd station is 1.1-1.2mm, and the 4th station is 0.7-0.85mm
The chopping process is used 2#M2 chopping cutter, and cutting-tool angle α=40～42 a ° equivalent diameter is 46-130 μ m, and tool change time is no more than five minutes at interval, can not move back two during tool changing simultaneously to fix a cutting tool; Aim at section when connecing thread, Stainless Steel Wire does not allow to turn round strength, during butt welding according to silk footpath, butt welding machine gap and butt welding machine electric current when surplus thickness is adjusted; The scarce precursor of each station is no more than three in the chopping process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99120164A CN1094992C (en) | 1999-09-07 | 1999-09-07 | Stainless steel fiber material and its processing technology and stainless steel fiber muffler element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99120164A CN1094992C (en) | 1999-09-07 | 1999-09-07 | Stainless steel fiber material and its processing technology and stainless steel fiber muffler element |
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| Publication Number | Publication Date |
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| CN1287182A CN1287182A (en) | 2001-03-14 |
| CN1094992C true CN1094992C (en) | 2002-11-27 |
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| CN99120164A Expired - Fee Related CN1094992C (en) | 1999-09-07 | 1999-09-07 | Stainless steel fiber material and its processing technology and stainless steel fiber muffler element |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003113253A (en) * | 2001-07-30 | 2003-04-18 | Nisshinbo Ind Inc | Non-asbestos-based friction material |
| US6581723B2 (en) * | 2001-08-31 | 2003-06-24 | Owens Corning Composites Sprl | Muffler shell filling process, muffler filled with fibrous material and vacuum filling device |
| CN105201707A (en) * | 2015-09-16 | 2015-12-30 | 成都正升能源技术开发有限公司 | Air filter for engine noise reduction |
| CN112938639A (en) * | 2021-01-30 | 2021-06-11 | 江苏首华智能装备有限公司 | Fiber filling system for cylinder |
-
1999
- 1999-09-07 CN CN99120164A patent/CN1094992C/en not_active Expired - Fee Related
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| Title |
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| GB1220-92 1992.1.1 中国标准出版社 * |
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