CN1037987C - A loom guide bar blade with its surface nitrided for hardening - Google Patents
A loom guide bar blade with its surface nitrided for hardening Download PDFInfo
- Publication number
- CN1037987C CN1037987C CN93119998A CN93119998A CN1037987C CN 1037987 C CN1037987 C CN 1037987C CN 93119998 A CN93119998 A CN 93119998A CN 93119998 A CN93119998 A CN 93119998A CN 1037987 C CN1037987 C CN 1037987C
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- nitriding
- reed wire
- gas
- loom
- yarn guiding
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
- D03D47/277—Guide mechanisms
- D03D47/278—Guide mechanisms for pneumatic looms
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The present invention relates to a yarn guide bar reed blade (the surface of which contacts with yarn) for automatic textile machinery, such as an air jet loom. A nitride hardening layer is formed by nitrizing so as to prevent rough and unsmooth contacting surface and unsmooth yarn contacted with the contacting surface caused by the abrasion of yarn contacting points on recent automatic high speed textile machinery. Therefore, the yarn guide bar reed blade for looms of the present invention can be completely suitable for recent automatic high speed textile machinery.
Description
The present invention relates to have the loom yarn guiding chase comb reed wire of the hardened surface of nitriding, be applicable to automatic loom, as jet-propelled loom or water-jet loom.
Usually, a plurality of yarn guiding chase comb reed wires 10 as shown in Figure 1, and have at least two the guiding sley bars be connected on the framework 32, as shown in Figure 2, framework 32 is installed on the automatic loom.
For the high-speed weaving machine of newly-developed, no matter be jet-propelled or the abrasion resistance properties of the yarn guiding chase comb reed wire of water-jet loom becomes most important requirement.Employed before this material such as metasable state austenitic stainless steel, work hardening has obvious advantage, perhaps after the cure process of ferrite surface of stainless steel as the material of above-mentioned yarn guiding chase comb reed wire so that keep corrosion-resistant and above-mentioned mar proof.
But, recently, improved the further high speed of weaving and knitting preparation, the wear-resistant problem that becomes of above-mentioned material in speed further improves, be that approximately to be limited to Vickers hardness be 500HV for hardness that the metasable state austenitic stainless steel improves after by work hardening, because above-mentioned material can not stand running up of loom, for example, its rotating speed is not less than 500r.p.m (revolutions per minute), abrasion condition is serious, in the short time yarn fluffiness will take place, and keeps in this case that to weave be difficult, in addition, for improving the hardness on surface.For example, (PVD) plates TiN in its surface by the physical vapor deposition effect, or sclerosis chromium plating is suitable for.Yet this method can provide enough case hardnesses, and but then, the problem that this method produced is that coating or coating come off easily, and this is that basal plane because of material is not enough to be adhered on coating or the coating, because due to yarn guiding chase comb reed wire flexible.
Simultaneously, carbon nitriding iron material is for example in water jet looms, often be subjected to the lower and upper equally easy rust corrosion of stainless steel of stating of situation that water sprays, as a result, the variable color situation when passing the yarn guiding chase comb reed wire that gets rusty, yarn takes place, so this material also is unsuitable for making the yarn guiding chase comb reed wire.
Purpose of the present invention just provides a kind of ABRASION RESISTANCE, yarn guiding chase comb reed wire that corrosion resistance is superior, wherein the surface be nitriding to be used for sclerosis.
The object of the present invention is achieved like this, and yarn guiding chase comb reed wire of the present invention is to be that the metal material that nitriding is carried out in sclerosis constitutes by its surface.
Nitriding, is for this reason carried out for sclerosis in the surface of yarn guiding chase comb reed wire of the present invention, has higher hardness with original specific surface mutually, has adapted to the automatic loom anti abrasive requirement that runs up down, and has also prevented surface oxidisation.
It is existing that the present invention is described in more detail:
The yarn guiding chase comb of the present invention of its surface carburization cure process is by placing fluorine-containing its yarn guiding chase comb reed wire or fluoride gas, under certain heating condition, remain on then the surface of this yarn guiding chase comb reed wire is obtained by nitrogen-hardening.
Do not limited about the material of above-mentioned yarn guiding chase comb reed wire is special, general general metal material is used.For example austenitic stainless steel and ferritic stainless steel or the like.In all material, to be that the present invention is preferential adopt nickel alloy, and especially to be not less than 25% nickel alloy (being abbreviated as % hereinafter) be to adopt at most to nickel content.Ni-Cr is for example arranged, Ni-Cr-Mo, Ni-Cr-Fe, Ni-Cr-Co or the like, particularly the alloy that some nickel contents are high resembles inconel, hastelloy, Xite.In addition, nickel content is lower than nickel alloy the present invention of 25% and also adopts.Therefore, no matter be lower than 25% nickel content, or the nickel alloy that is higher than 25% nickel content is included in the material that is used for making loom yarn guiding chase comb reed wire of the present invention.
Preferable the sort of alloy is that nickel content is not less than 25%, and iron is not higher than 25%, and chromium or molybdenum also are not less than 5%.
In addition, the yarn guiding chase comb reed wire, arranging process obtains normally above-mentioned metal material to be obtained needed shape by the cold stamping operation and polish etc.And the thickness of this loom yarn guiding chase comb reed wire is chosen between the 0.2-0.3mm.
In fluorine-containing or fluoride gas or fluorine-containing or fluoride atmosphere, to be handled by the loom yarn guiding chase comb reed wire that for example above-mentioned nickel alloy metal material is made, fluoride gas is, for example, NF
3, BF
3, CF
4, HF, SF
6, C
2F
6, WF
6, CHF
3Or SiF
4These gases can be used alone or in combination.In addition, the fluorine compound gas that has F in its molecule can be used as above-mentioned fluorine-containing or fluoride gas.Moreover by in a heating and decomposition device, decomposing the F that above-mentioned fluorine compound gas forms
2Gas and the F that begins to take shape
2Gas is as above-mentioned fluorine-containing or fluoride gas.According to this situation, such fluorine compound gas and F
2The mixed use of gas.
Above-mentioned fluorine-containing or fluoride gas is fluorine compound gas and F for example
2Gas can use separately, still, usually, by adding a kind of inert gas (as N
2Gas) carry out dilution process.The concentration of the gas of fluorine-containing or fluoride should be 10,000～100 in the gas after this dilution, and 000ppm is 20,000～70 preferably, 000ppm.Better be 30,000～50,000ppm.
Among the present invention, with above-mentioned as yet not the loom yarn guiding chase comb reed wire of nitriding drop in the fluorine-containing of above-mentioned concentration or the fluoride atmosphere, and remain under the heating condition with by fluorination treatment.This is the part that the present invention has characteristics most, the heated temperature of yarn guiding chase comb reed wire keeps for example at 350～600 ℃ in this case, the time that loom yarn guiding chase comb reed wire is kept in fluorine-containing or fluoride atmosphere can be according to the kind of the nickel alloy of yarn guiding chase comb reed wire and the size of geometry and size, heating-up temperature and time or the like, normally in 10 minutes or a few minutes to 20 minute scopes, suitably select.The processing of yarn guiding chase comb reed wire in fluorine-containing or fluoride atmosphere allows " N " atom to infiltrate in the employed material, and for example nickel alloy is impossible in the past, though also do not confirm penetration equipment mechanism now, can understand by following narration.
Just, the NiO oxide layer that forms on the surface of loom yarn guiding chase comb reed wire has suppressed the infiltration of " N " atom of nitriding.The nickel alloy with oxide layer remain on fluorine-containing or fluoride gas in when heating as mentioned above, can make the NiO oxide layer be converted into the fluorinated layer of layer of Ni F, " N " atom of nitrogenize enters NiF
2Fluorinated layer easy more than the oxide layer that enters NiO, just, under suitable condition, by above-mentioned fluoride process " N " atom is infiltrated and make this surface form suitable situation.
Like this, consider when nickel alloy has suitable surface appearance and inserts in the nitriding atmosphere, absorb " N " atom subsequently, " N " atom in nitriding gas evenly infiltrates the certain degree of depth of nickel alloy surfaces, and the result forms the uniform nitriding layer of certain depth on its surface.
As mentioned above, having suitable surface condition heats with nitrogenize to insert in the nitriding atmosphere by the loom yarn guiding chase comb reed wire of fluoride process absorption " N " atom.In this case, the nitriding gas that is used for nitriding atmosphere is only by NH
3The simple gases of forming, or adopt by NH
3And the gas that mixes of carbon-source gas (for example RX gas).The mixture of two kinds of gases also can be used.Usually, with inert gas, N for example
2The above-mentioned simple gases of mixing is used.According to this situation, H
2Gas is to be added in these gases.
In this nitriding atmosphere, the above-mentioned loom yarn guiding chase comb reed wire of fluoridizing is heated, and to be set in temperature usually be 500～700 ℃ to heating condition like this, and heat treatment time is set in 3～6 hours scopes.Handle by this nitriding, a uniform closely nitriding layer (being made up of whole individual layer) forms on the surface of above-mentioned loom yarn guiding chase comb reed wire, therefore, the case hardness of this yarn guiding chase comb reed wire reaches more than the 600HV, under the general regular situation, 280～380HV is in a ratio of 800～1100HV with basic material.
Basically with nitriding temperature and time and the thickness of fixed rigidity layer generally in 20～30 mu m ranges, yet, be lower than when temperature under 500 ℃ the situation, the formation of nitriding layer is difficult, when temperature is higher than 700 ℃, fluorinated layer is damaged, and the easy oxidation of Ni, the result causes nitriding layer inhomogeneous, in addition, the surface roughness of nitrogenize hardened layer is damaged, and directly influences product quality and causes defective.
On the other hand, in the fluorination process, can not form sufficient fluorinated layer usually when temperature is lower than 350 ℃, temperature is unsuitable for production process when surpassing 600 ℃, because the stove material in blind roaster is because fierce fluorination reaction is also destroyed.
From forming the viewpoint of nitrogen-hardening layer, even more preferably, the difference of fluoridizing between temperature and the nitriding temperature is the smaller the better.For example, after fluoridizing, carry out nitriding again, just can not form suitable nitriding layer in case cool down.
Above-mentioned fluoridize and the step of nitriding as follows:
For example, this is to finish in a blind roaster of being made by metal, as shown in Figure 3, at first carries out fluorination treatment, carries out nitriding thereafter and handles in the realization of cover furnace interior.
Consult Fig. 3, the 1-blind roaster, 2-overlaps stove outer covering, 3-heater, 4-internal container, 5-air inlet pipe, 6-blast pipe, 7-motor, 8-fan, 11-wire netting container, 13-vavuum pump, 14-harmful substance remover, 15,16,20-gas cylinder, 17-flowmeter, 18-valve.
Yarn guiding chase comb reed wire (10) is put into stove 1, inject fluorine-containing or fluoride gas such as NF by a passage through linking to each other with a gas cylinder 16
3, by heating, carry out fluorination treatment, the effect by vavuum pump (13) makes gas draw blast pipe 6, before gas flows out through harmful substance remover (14) detoxifcation.
Then, gas cylinder 15 is connected with a pipeline with 20, realizes the nitriding processing by injecting nitriding gas in stove 1, after the nitriding, residual gas is discharged by blast pipe 6 and harmful substance remover 14, by above-mentioned sequence of operations process, fluoridizes, the nitriding treatment process finishes.It is desirable that high Refractoloy is used for replacing stainless steel to make above-mentioned metal blind roaster material, is fluoridized because stainless steel is compared easily with high nickel based metal, and the result fluoridizes temperature must be set in high temperature, needs to consume the fluorine-containing or fluoride gas of mass expensive.
Adopt HF
2Gas as fluorine-containing or fluoride is specially adapted to above-mentioned fluorination treatment process, just, and NF
3Be the gaseous matter of being convenient to obtain, do not react at normal temperatures, can operate arbitrarily, discharge gas and be easy to detoxification.
Above mention, the present invention to the surface carburization of loom yarn guiding chase comb reed wire with sclerosis, just, at first the oxide layer on a metallic surface is transformed into a fluorinated layer, this metal is as the formation material that is used for loom guiding sley bar reed wire, nitriding then, superficial layer can form a nitrogen-hardening layer.Therefore, for example contain Cr, the nickel alloy of Mo or the like reacts to form hard interphase such as CrN with " N " atom easily, MoN etc., because such fluorinated layer can transmit " N " atom in the nitriding that is used for hardening, " N " atomic energy evenly penetrates into nickel alloy surfaces, can reach certain degree of depth in the nitriding time of regulation.If uniform nitriding process only can cause forming closely in the certain degree of depth of nickel alloy surfaces, uniform nitriding layer, effectively improve its case hardness, and the rigidity of nickel alloy matrix material section does not improve.Owing in the high speed rotating of modern automatic high speed loom, have excellent abrasion resistance according to nitriding of the present invention and surfaces hardened, yarn is phozy, is different from conventional process, in addition, yarn is nondiscolouring also, because there is not the phenomenon of oxidation and rusting to take place in adopting water jet automatic loom.Therefore, can obtain high-quality woven fabric, and the stream factor of loom itself improves, in addition, improved and knitted the durability of plane No., also maintenance and for example check and exchange easily to the sley bar reed wire.
Below be the description of the drawings:
Figure l is the perspective view of loom yarn guiding chase comb reed wire of the present invention.
Fig. 2 is that loom yarn guiding chase comb reed wire of the present invention is installed to the partial sectional view on the framework.
Fig. 3 illustrates the structural representation that the present invention realizes the processing stove of nitriding.
Further specify below in conjunction with embodiment.
EXAMPLE l
Prepare nickel alloy material 76Ni-16Cr-8Fe and be processed into the thick sheet of 0.19mm, by cold stamping this sheet is made for loom guiding sley bar reed wire 10 then, shape as shown in Figure 1, then above-mentioned loom guiding sley bar reed wire 10 is put into stove 1, Fig. 3 is after the vacuum cleaned furnace interior, and be heated to 550 ℃, add fluorine-containing then in this case or fluoride gas (NF
310vol%+N
290vol%), in stove, form a kind of air pressure, kept this state l5 minute, then, above-mentioned fluorine-containing or fluoride gas is discharged in stove, again with nitriding gas [NH
350vol%+RX gas (Co21%+H
232%+CO
21%+N
246%) 50%] add in the stove, temperature remains on 550 ℃ in the stove.Carry out nitriding and handle under this condition, the time kept 3 hours, took out this loom guiding sley bar reed wire then.Check its hardness, reach Vickers hardness 880-900VH, the nitrogen-hardening layer thickness reaches 20 μ m, and one is complete, and the top layer forms uniformly.
In addition, this yarn guiding chase comb reed wire is installed on the framework 31 as shown in Figure 2, reinstalls on the water jet automatic loom to be driven.As a result, the reed wire made from conventional stainless steel metal compares, and has reduced generation warp thread fluffiness.In addition, do not cause variable color yet, therefore, can obtain high-quality woven fabric because of getting rusty.
Preparation nickel alloy material 76Ni-16Cr-8Fe, be processed into the thick sheet of 0.19mm, again its cold stamping is made for reed wire 10, shape is put into stove 1 with above-mentioned reed wire 10, (shown in Figure 3) as shown in Figure 1, afterwards, the vacuum cleaned furnace interior, and be heated to 350 ℃, under this state, add fluorine-containing or fluoride gas (NF then
3L0vol%+N
2, 90vol%), in stove, form gas pressure, kept this state 15 minutes.Then above-mentioned fluorine-containing or fluoride gas is discharged out of the furnace, again with nitriding gas [NH
350vol%+RX50%) add in the stove, and temperature keeps 700 ℃ in the stove, carries out nitriding under this condition, time remaining 3 hours takes out reed wire then.Check its hardness can reach Vickers hardness 880-900VH, nitrided case depth reaches 20 μ m, and complete, a uniform nitriding layer forms in its surface.
In addition, nitriding yarn guiding chase comb reed wire is installed on the framework 32, as shown in Figure 2, be loaded into again in the automatic loom of water injection system to drape over one's shoulders driving, the reed wire that result and conventional stainless steel metal are made has relatively significantly reduced generation warp thread fluffiness, does not also have to cause because of getting rusty the trouble that variable color is so simultaneously, therefore, can obtain high-quality woven fabric.
Claims (3)
1. a loom yarn guiding chase comb reed wire of being made by metal material is characterized in that its surface upward forms a kind of nitrogen-hardening layer.
2. loom yarn guiding chase comb reed wire according to claim 1 is characterized in that metal material adopts nickel alloy.
3. loom yarn guiding chase comb reed wire according to claim 2 is characterized in that in the nickel alloy that nickel content is not less than 25% by weight, and iron content is not higher than 25%, and chromium or molybdenum content are not less than 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93119998A CN1037987C (en) | 1993-12-23 | 1993-12-23 | A loom guide bar blade with its surface nitrided for hardening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93119998A CN1037987C (en) | 1993-12-23 | 1993-12-23 | A loom guide bar blade with its surface nitrided for hardening |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1105075A CN1105075A (en) | 1995-07-12 |
| CN1037987C true CN1037987C (en) | 1998-04-08 |
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ID=4993106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93119998A Expired - Fee Related CN1037987C (en) | 1993-12-23 | 1993-12-23 | A loom guide bar blade with its surface nitrided for hardening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1037987C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219088A (en) * | 2019-07-19 | 2019-09-10 | 际华三五四二纺织有限公司 | A kind of novel high speed air-jet loom reed |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0550752A1 (en) * | 1990-09-28 | 1993-07-14 | Citizen Watch Co. Ltd. | Reed for high speed loom |
| US5252145A (en) * | 1989-07-10 | 1993-10-12 | Daidousanso Co., Ltd. | Method of nitriding nickel alloy |
-
1993
- 1993-12-23 CN CN93119998A patent/CN1037987C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5252145A (en) * | 1989-07-10 | 1993-10-12 | Daidousanso Co., Ltd. | Method of nitriding nickel alloy |
| EP0550752A1 (en) * | 1990-09-28 | 1993-07-14 | Citizen Watch Co. Ltd. | Reed for high speed loom |
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| Publication number | Publication date |
|---|---|
| CN1105075A (en) | 1995-07-12 |
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