CN105324507A

CN105324507A - Metal component for fasteners, slide fastener using same, and method for producing metal component for fasteners

Info

Publication number: CN105324507A
Application number: CN201480035875.3A
Authority: CN
Inventors: 荻原敦; 广见千贺子; 福山贵博
Original assignee: YKK Corp
Current assignee: YKK Corp
Priority date: 2013-06-28
Filing date: 2014-03-04
Publication date: 2016-02-10
Anticipated expiration: 2034-03-04
Also published as: TWI523956B; WO2014208134A1; TW201512420A; CN105324507B

Abstract

A metal component for fasteners contains, in mass%, 0.08% or less of C, 0.05-2.0% of Si, more than 8.0% but 25.0% or less of Mn, 0.06% or less of P, 0.01% or less of S, more than 6.0% but 30.0% or less of Ni, 13.0-25.0% of Cr, 0.2-5.0% of Cu, less than 0.20% of N, 0.002-1.5% of Al and less than 0.20% of C + N, with the balance made up of Fe and unavoidable impurities, while setting Md30 represented by formula (a) to -150 or less. Md30 = 413 - 462(C + N) - 9.2Si - 8.1Mn - 9.5Ni - 13.7Cr - 29Cu ...(a). In this connection, the chemical symbols in formula (a) respectively represent the contents (mass%) of elements represented by the chemical symbols in the metal component for fasteners.

Description

The manufacture method of slide fastener metal parts, the slide fastener adopting this slide fastener metal parts and slide fastener metal parts

Technical field

The present invention relates to the manufacture method being such as arranged on and Needle analyzer can be utilized to detect the slide fastener metal parts of the slide fastener on the clothes of suture needle etc., the slide fastener adopting this slide fastener metal parts and slide fastener metal parts, propose especially a kind of while making the nonmagnetic parts with the degree that Needle analyzer cannot detect, improve the processibility of slide fastener metal parts and the technology of improving production efficiency.

Background technology

For being arranged on the slide fastener needing to use and to carry out for the Needle analyzer detecting the pin such as suture needle, broken needle be likely mixed in the stage of making on the clothes that detects, in order to prevent the flase operation causing Needle analyzer because being mistaken as the hazardous materials such as pin, needing by can not be magnetized, the nonmagnetic metallic substance that has affected by magnetic fields hardly forms.

At this, require that the usual employing such as erosion resistance and nonmagnetic parts take SUS304 as the austenitic stainless steel of representative, such as in patent documentation 1, record the high Mn of the content adding Mn and N, the stainless steel of high N class as highly corrosion resistant, high strength, non-magnetic stainless steel.

In addition, in patent documentation 2, for the stainless steel that slide fastener etc. adopts, in order to being mixed into of broken needle when making suitably can be detected, propose a kind of Needle analyzer and be suitable for stainless steel, it consists of, by mass percentage containing C:0.01 ~ 0.15%, Si:0.1 ~ 5%, Mn:1 ~ 10%, Ni:8 ~ 25%, Cr:14 ~ 30%, more than N:0.01% and be less than 0.06%, rest part is Fe and impurity, and Ni equivalent is being defined as Ni equivalent=Ni+0.6Mn+9.69 (C+N)+0.18Cr-0.11Si ²time, the value meeting Ni equivalent is more than 19, and the permeability of this stainless steel in 1kOe magnetic field be less than 1.005, susceptibility in 18kOe magnetic field is below 550memu/g, and show the inspection pin performance of below Φ 1.2mm iron ball.

Prior art document

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2011-6776 publication

Patent documentation 2: Japanese Patent No. 3947679 publication

Summary of the invention

the problem that invention will solve

But, in the stainless situation described in patent documentation 1, add can generate minute quantity man-hour processing strain induced martensite change and present low magnetic, thus in this stainless situation, cannot obtain such as in the magnetic field of 10000 oersteds magneticflux-density be the non magnetic, namely so-called super non magnetic of the degree of below 0.01T, therefore, slide fastener is formed at this stainless steel of employing, and to this slide fastener clothes use Needle analyzer when, likely cause flase operation because this slide fastener is detected by Needle analyzer.

In addition, in the stainless situation described in patent documentation 2, because hardness becomes too high, particularly when being formed the multiple sprocket for forming zipper sprocket row by this stainless steel, be difficult to be shaped continuously these sprockets, therefore, except the problem reduced except inevitably making manufacture efficiency, more seriously there is the hidden danger causing its shaping dies breakage.This stainless steel can reduce hardness by such as implementing repeatedly thermal treatment, thus can realize the continuous molding of sprocket, but in this case, exists owing to implementing thermal treatment and cause manufacturing cost to raise such other problems.

The present invention with the problems referred to above solving conventional art and have for problem, its object is to provide have can not cause Needle analyzer flase operation degree non magnetic, can manufacturing cost is suppressed lower while promote the manufacture method of the slide fastener metal parts of productivity, the slide fastener adopting this slide fastener metal parts and slide fastener metal parts.

for the scheme of dealing with problems

Slide fastener metal parts of the present invention is by mass percentage containing below C:0.08%, Si:0.05% ~ 2.0%, Mn: be greater than 8.0% and less than 25.0%, below P:0.06%, below S:0.01%, Ni: be greater than 6.0% and less than 30.0%, Cr:13.0% ~ 25.0%, Cu:0.2% ~ 5.0%, N: be less than 0.20%, Al:0.002% ~ 1.5%, and C+N is less than 0.20%, rest part is Fe and inevitable impurity, further, the Md30 represented with following formula (a) is below-150.

Md30＝413－462(C+N)－9.2Si－8.1Mn－9.5Ni－13.7Cr－29Cu·······(a)

At this, the symbol of element in formula (a) represents the content (mass percent) of this element in this slide fastener metal parts.

At this, in the present invention, preferably, as inspection pin performance, the iron ball value of fastener chain and slide fastener is below Φ 1.5mm, and, as chain tooth monomer, up and down stop member, open the stop member monomers (starting material) such as part, the magneticflux-density presented when being preferably configured with these parts in 10000 oersteds (Oe) magnetic field is below 0.01T, is particularly preferably below 0.007T.

In addition, preferably, slide fastener metal parts of the present invention implements cold working or cold working and heat treated parts.

In slide fastener metal parts of the present invention, also can contain the Mo of less than 3.0% by mass percentage, in this case, be preferably the Md30 substituting and represent with above-mentioned formula (a), the Md30 ' represented with following formula (b) is for below-150.

Md30’＝413－462(C+N)－9.2Si－8.1Mn－9.5Ni－13.7Cr－18.5Mo－29Cu·······(b)

Also can be that above-mentioned slide fastener metal parts is also containing at least one element selected from Nb, V, Ti, W, Ta, and each element is less than 1.0% by mass percentage.

In addition, at this, can also containing be by mass percentage less than 3.0% Co and/or be by mass percentage less than 0.015% B.

In addition, also can also containing from be by mass percentage below Ca:0.01%, below Mg:0.01%, below REM:0.05% selection more than one.

In addition, slide fastener of the present invention is formed by slide fastener component parts, and this slide fastener component parts comprises: a pair chain denture, and multiple sprocket is arranged and forms by it; And pull head, it can along the slippage of described chain denture, and to make each sprocket of these chain dentures be engaged with each other or be separated, wherein, each sprocket in described slide fastener component parts, at least chain denture is formed by any one slide fastener metal parts aforesaid.

In addition, the manufacture method of slide fastener metal parts of the present invention is in the process manufacturing aforesaid slide fastener metal parts, cold working (wire drawing, rolling processing etc.) is implemented to the wire rod or steel wire (such as round line) with predetermined composition, this wire rod or steel wire are configured as the work material (line recorded afterwards) formed by the flat wire of such as cross-sectional shape to be the special-shaped line of roughly alphabetical Y etc. and/or cross-sectional shape be rectangle, afterwards cold working (cutting off processing, punch process etc.) are implemented to described work material.

At this, preferably, the section hardness of described work material is 220 ~ 360 by the vickers hardness hv that the Vickers hardnes test according to JISZ2244 is measured, the elongation of this work material measured according to the tension test of JISZ2241 is more than 1%, and tensile strength is in the scope of 450MPa ~ 1100MPa.

the effect of invention

Adopt the present invention, above-mentioned composition is consisted of by what make slide fastener metal parts, and be below-150 with the Md30 that formula (a) represents, thus there is the non magnetic of the degree do not detected by Needle analyzer, and, because the hardness after cold working compared with the stainless steel of conventional art reduces, therefore, particularly when slide fastener metal parts is made sprocket, do not implement the continuous molding that repeatedly thermal treatment just can carry out these sprockets, its result, the processing of slide fastener metal parts becomes easy, the manufacturing cost caused because implementing repeatedly thermal treatment etc. can not be increased raise and just increase substantially manufacture efficiency.

Accompanying drawing explanation

Fig. 1 is the front view of the slide fastener representing the slide fastener metal parts with one embodiment of the present invention.

Fig. 2 is the stereographic map representing the operation that sprocket, upper stop member and lower stop member that the slide fastener of Fig. 1 has are formed on zipper strip.

Fig. 3 represents the sectional view that can be used in the steel wire manufacturing slide fastener metal parts.

Fig. 4 represents the sectional view that can be used in another steel wire manufacturing slide fastener metal parts.

Fig. 5 represents the sectional view that can be used in the another steel wire manufacturing slide fastener metal parts.

Fig. 6 is the vertical view of the Needle analyzer of the inspection pin test representing embodiment.

Embodiment

Below, embodiments of the present invention are explained with reference to accompanying drawing.

Slide fastener 1 illustrated in Fig. 1 comprises: pair of right and left chain denture 2, and it is by forming multiple sprocket 2a above-below direction is in the drawings arranged; Zipper strip 3, it is formed by cloth etc., and have the core 3a installed for the sprocket 2a that these chain dentures 2 are respective, this core 3a extends along the above-below direction in figure, is formed as thicker rope form; And with the pull head 4 of pulling-on piece, the inside of this pull head 4 is passed for each chain denture 2, and this pull head 4 can along the bearing of trend of chain denture 2 (above-below direction in figure) slippage, intermesh to make each sprocket 2a of paired chain denture 2 or be separated, wherein, pulling-on piece grips for such as user.

In addition, at this, in this slide fastener 1, upper stop member 5 is established in an end (upper end in Fig. 1) of chain denture 2, and set stop member 6 in the other end (bottom in Fig. 1) of chain denture 2, this upper stop member 5 to make closed or made a pair chain denture 2 open by the separation of sprocket 2a the pull head 4 of a pair chain denture 2 be shifted further to the direction that chain denture 2 is closed for stoping by the engagement of sprocket 2a, this lower stop member 6 is shifted further for the direction stoping pull head 4 and open to chain denture 2, utilizes these stop members 5,6 to limit the moving range of pull head 4.

At this, in the present invention, with the slide fastener metal parts formed by austenitic stainless steel described later at least one the slide fastener component parts in the slide fastener component parts that can be formed by metallic substance forming above-mentioned slide fastener 1, particularly each sprocket 2a, the above-mentioned slide fastener component parts that can be formed by metallic substance comprises each sprocket 2a of chain denture 2, pull head 4, upper stop member 5 and lower stop member 6 etc.Preferably, at least one in other slide fastener metal partss such as pull head 4, upper stop member 5 and lower stop member 6 is also formed by this austenitic stainless steel.

Thus, when utilizing Needle analyzer to detect the pins such as suture needle to the clothes being provided with slide fastener 1, can utilize inherent nature super non magnetic as the austenitic stainless steel for the formation of slide fastener metal parts, being conducive to eliminating Needle analyzer is the hidden danger of pin by this slide fastener metal parts error detection.

And, this austenitic stainless steel is compared with the stainless steel in the past described in patent documentation 1, hardness after its cold working is less, therefore, do not need to implement repeatedly thermal treatment just can easily process, so, when manufacturing this slide fastener metal parts, can improve under the condition of lower manufacturing cost and manufacturing efficiency.

And, form the austenitic stainless steel of slide fastener metal parts of the present invention, by mass percentage containing below C:0.08%, Si:0.05% ~ 2.0%, Mn: be greater than 8.0% and less than 25.0%, below P:0.06%, below S:0.01%, Ni: be greater than 6.0% and less than 30.0%, Cr:13.0% ~ 25.0%, Cu:0.2% ~ 5.0%, N: be less than 0.20%, Al:0.002% ~ 1.5%, and C+N is less than 0.20%, rest part is Fe and inevitable impurity, further, with

Formula (a): Md30=413-462 (C+N)-9.2Si-8.1Mn-9.5Ni-13.7Cr-29Cu

The Md30 represented is below-150.

When this austenitic stainless steel, the Md30 represented with formula (a) is less as mentioned above, thus increased substantially austenitic type stability, even if when carrying out cold working to form complicated shape, magnetic substance also can be suppressed completely namely to process the generation of strain induced martensite tissue.In addition, by reducing the content of C, N and making Cu, Al content in above-mentioned scope, can work hardening be suppressed and guarantee required cold-workability.In addition, by making the content of Mn, Ni be in above-mentioned scope, the basic magnetic of nonmagnetic material can be reduced further and obtain super non magnetic.

(addition of each composition)

Because C intensity when interpolation is more than 0.08% uprises, cold-workability is poor, therefore, the upper limit is set to 0.08%, is preferably set to less than 0.05%.On the other hand, manufacturing cost can be caused to increase when excessively reducing the content of C, therefore, preferred lower limit is 0.001%, and particularly, the content of C is more preferably more than 0.01%.The preferable range of C content is 0.01% ~ 0.05%.

For Si, add more than 0.05% in order to deoxidation, preferably add more than 0.1%.But when adding Si more than 2.0%, cold-workability is poor.Therefore, the upper limit of Si content is set to 2.0%, is preferably set to less than 1.0%.The preferable range of Si content is 0.1% ~ 1.0%.

For Mn, in order to significantly improve the austenitic stability after cold working and obtain super non magnetic, the addition of Mn more than 8.0%, preferably more than 13.0%.But when Mn adds more than 25.0%, its effect is saturated, and while intensity raises, cold-workability worsens.Therefore, the upper limit of Mn content is set to 25.0%, is preferably set to less than 20.0%, is more preferably less than 16.0%.The preferable range of Mn content is greater than 13.0% and less than 20%.Mn content is more preferably less than 16.0%.

The content of P is set to less than 0.06%, is preferably set to less than 0.04%, to guarantee cold-workability.But it is industrially very difficult for making the content of P be zero, and therefore, preferred scope is 0.01% ~ 0.04%.

The content of S is set to less than 0.01%, is preferably set to less than 0.005%, to guarantee hot manufacturing and the erosion resistance of wire rod.But it is industrially very difficult for making the content of S be zero, and therefore, preferred scope is 0.0002% ~ 0.005%.

For Ni, in order to significantly improve the austenitic stability after cold working and guarantee super non magnetic, the addition of Ni, more than 6.0%, preferably adds more than 8.0%.But when the addition of Ni is more than 30.0%, even austenitic type and be non magnetic, the interatomic bond that also Fe-Ni is right as Invar alloy closes number and increases and micro-weak magnetic properties.Therefore, the upper limit of Ni content is set to 30.0%, is preferably set to less than 20.0%, be more preferably set to and be less than 10.0%.Close because hope reduces the right interatomic bond of Fe-Ni as far as possible, therefore the preferable range of Ni content is more than 8.0% and is less than 10.0%.

For Cr, in order to significantly improve the austenitic stability after cold working and guarantee super non magnetic and obtain high corrosion resistance, Cr adds more than 13.0%, preferably adds more than 15.0%.But, when Cr adds more than 25.0%, owing to generating δ (the Δ)-ferrite of bcc structure of ferromagnetic in the local of tissue, therefore aobvious magnetic and intensity improves, cold-workability declines.Therefore, the upper limit of Cr content is set to 25.0%, is preferably set to less than 20.0%.The preferable range of Cr content is 15.0% ~ 20.0%.

For Cu, in order to significantly improve the austenitic stability after cold working and guarantee super non magnetic, and suppress austenitic work hardening and guarantee cold-workability, Cu adds more than 0.2%.Cu preferably adds more than 1.0%, more preferably adds more than 3.0%.But when Cu adds more than 5.0%, the Heat of Formation crackle due to the significant solidifying segregation of Cu, therefore, industrially cannot manufacture.Therefore, the upper limit of Cu content is set to 5.0%, is preferably set to less than 4.0%.Preferably Cu content is set to 1.0% ~ 4.0%, is more preferably set to and is greater than 3.0% and less than 4.0%.

N intensity interpolation more than 0.20% time improves, cold-workability is poor.Therefore, the content of N is set to and is less than 0.20%, is preferably set to and is less than 0.10%.On the other hand, because the content excessively reducing N can cause manufacturing cost to increase, therefore, the content of N is preferably set to more than 0.001%, is more preferably set to more than 0.01%.The preferable range of N content is more than 0.01 and is less than 0.10%.

Al is deoxidant element, and in the same manner as Cu, is the important element suppressing austenitic work hardening and guarantee cold-workability, containing more than 0.002%, preferably containing more than 0.01%.But when Al adds more than 1.5%, its effect is saturated, generates thick inclusion, and cold-workability is deteriorated on the contrary.Therefore, the upper limit of Al content is set to 1.5%, is preferably set to less than 1.3%, be more preferably set to less than 1.2%.The preferable range of Al content is 0.01% ~ 1.2%.

C+N is defined as and is less than 0.20%, to realize softening and to guarantee the cold-workability of complicated form part.The content of C+N is preferably less than 0.10%.

Md30 in aforesaid formula (a) is processing strain induced martensite amount after investigation cold working and the relation between composition and the index that obtains, be organize when giving the stretching true strain of 0.3 to single phase austenite 50% change martensitic temperature into.The numerical value of Md30 is less, and austenite is more stable and can suppress to generate martensite.Thus, control Md30 value is needed in order to ensure the super non magnetic of wire rod.Super non magnetic in order to also present after cold working, therefore need Md30 to control below-150.Md30 is preferably set to below-170, is more preferably below-200.

Inevitable impurity be such as be mixed in common stainless steel manufacturing processed O:0.001% ~ 0.01%, Zr:0.0001% ~ 0.01%, Sn:0.001% ~ 0.1%, Pb:0.00005% ~ 0.01%, Bi:0.00005% ~ 0.01%, Zn:0.0005% ~ 0.01% etc., raw material or the material contained by refractory body.

For Mo, in order to improve the erosion resistance of goods, preferably can add more than 0.01% as required, more preferably adding more than 0.2%.But when Mo adds more than 3.0%, likely intensity raising, cold-workability decline.Therefore, the upper limit of Mo content can be set to 3.0%, is preferably set to 2.0%.The particularly preferred scope of Mo content is 0.2% ~ 2.0%.

In addition, when containing Mo, substitute aforesaid formula (a) and use the Md30 ' utilizing following formula (b) to calculate, the Md30 ' preferably utilizing this formula (b) to obtain is for below-150.

Formula (b): Md30 '=413-462 (C+N)-9.2Si-8.1Mn-9.5Ni-13.7Cr-18.5Mo-29Cu

Nb, V, Ti, W, Ta can add more than one as required, improve erosion resistance to form carbonitride.When containing more than one in Nb, V, Ti, W, Ta, the content of each element is preferably set to more than 0.01%, is more preferably set to more than 0.05%.When described each element adds more than 1.0%, likely generate thick inclusion and cold-workability is declined.Therefore, the upper limit of Nb, V, Ti, W, Ta content separately can be set to 1.0%, is preferably set to less than 0.6%.The preferable range of each constituent content is 0.05% ~ 0.6%.

For Co, in order to significantly improve the austenitic stability after cold working and obtain super non magnetic, preferably can add more than 0.05% as required, more preferably add more than 0.2%.But, when Co adds more than 3.0%, likely intensity raising, cold-workability deterioration.Therefore, the upper limit of Co content is preferably set to 3.0%, wherein, is more preferably set to less than 1.0%.The particularly preferred scope of Co content is 0.2% ~ 1.0%.

B can add more than 0.0005% as required, preferably adds more than 0.001%, to promote hot manufacturing.But, when B adds more than 0.015%, likely generate boride on the contrary and cold-workability declined.Therefore, the upper limit of B content can be set to 0.015%, is preferably set to less than 0.01%.The preferable range of B content is 0.001% ~ 0.01%.

Ca, Mg, REM are for the effective element of deoxidation, can add more than one in these elements as required, but when excessively adding, and likely generate thick deoxidation resultant and cold-workability is declined due to soft magnetism deterioration.Therefore, when containing Ca, its content is set to less than 0.01%, is preferably set to less than 0.004%.When containing Mg, its content is set to less than 0.01%, is preferably set to less than 0.0015%.When containing REM, its content is set to less than 0.05%, is preferably set to less than 0.01%.In addition, the preferred lower value of Ca content is 0.0005%, is more preferably 0.001%.The preferred lower value of Mg content is 0.0005%, is more preferably 0.0006%.The preferred lower value of REM content is 0.0005%, is more preferably 0.001%.The preferable range of these elements content is separately Ca:0.001% ~ 0.004%, Mg:0.0006% ~ 0.0015%, REM:0.001% ~ 0.01%.

(tensile strength of basic wire rod, tension fracture shrinking percentage (Japanese: draw the broken disconnected Twisted り of Zhang))

Wire stretching intensity for the formation of the austenitic stainless steel of slide fastener metal parts of the present invention can be set to below 650MPa, particularly below 590MPa, and the tension fracture shrinking percentage of this basic wire rod can be set to more than 70%, is set to more than 75% especially.When the tensile strength of basic wire rod is below 650MPa, cold-workability is good.In addition, when the tension fracture shrinking percentage of basic wire rod is more than 70%, cold-workability is good.

By with required cold-workability correspondingly body more closely control steel become to be grouped into, these mechanical characteristicies can improve further.

Namely, being Mn by composition composition control: be greater than 13.0% and less than 20%, Cu:1.0% ~ 4.0%, Al:0.01% ~ 1.3%, more than N:0.01 and be less than 0.10% time, become that tensile strength is below 590MPa, tension fracture shrinking percentage is the wire rod of more than 75%.Thus, the cold-workability of wire rod improves further.

(inspection pin performance)

Inspection pin performance detects the variable quantity of the magneticflux-density suitable with the iron ball of Φ 1.5mm with magnetostatic field pattern Needle analyzer and this variable quantity is set as benchmark value (indicator value) 100, for inspection pin value during measurement measured object, relative value according to itself and described benchmark value is evaluated, wherein, this magnetostatic field pattern Needle analyzer be used in magnetic flux make metal with constant speed by time the variable quantity of magneticflux-density that produces measure.That is, if the inspection pin value of measured object is below benchmark value, then iron ball value is below Φ 1.5mm.In addition, inspection pin performance with which the iron ball value in the iron ball value of Φ 0.8mm, Φ 1.2mm and Φ 1.5mm below suitable mode represent, below Φ 0.8mm means the broken needle that can detect and make used minimum special size, and below Φ 1.5mm means the broken needle that can detect fully and usually use size.

And, in the present invention, preferably there is the inspection pin performance of iron ball below value Φ 1.5mm, be more preferably below Φ 1.2mm, particularly, most preferably be below Φ 0.8mm.In addition, at this, measured object is fastener chain, and the inspection pin value of measured object is the result that this measured object is obtained with vertical movement of direct of travel of Needle analyzer.

(magneticflux-density)

In the present invention, preferably, have following super non magnetic, that is, such as, when being configured in the magnetic field of 10000 oersteds (Oe) by a sprocket 2a, the magneticflux-density corresponding to this sprocket is shown as below 0.01T.It is further preferred that the magneticflux-density in the same magnetic field of 10000 oersteds (Oe) is below 0.007T.Upper stop member 5 and lower stop member 6 or the magneticflux-density opening the stop member monomers such as part are also same.

(manufacture method)

Slide fastener metal parts described above can utilize the following method illustrated to manufacture.

First, sectional shrinkage with more than 99% carries out wire rolling (calendering of Japanese: Hot Inter Line material) to the strand (Japanese: cast sheet) with mentioned component composition, obtains wire rod afterwards 1000 DEG C ~ 1200 DEG C enforcement homogenizing thermal treatments.

In addition, the less rod rolling of diameter and thin plate, slab, steel pipe, excellent rolling are different, can implement heat-flash processing.Wire rolling and homogenizing thermal treatment make super non magnetic stabilization be effective for making wire rod homogenizing.Particularly, in order to obtain soft and also stably become super nonmagnetic wire rod after cold working, need, to add up to more than 99% such high sectional shrinkage to carry out wire rolling to the strand with mentioned component composition, at 1000 DEG C ~ 1200 DEG C, to implement homogenizing thermal treatment afterwards.

At this, when the sectional shrinkage total in wire rolling is less than 99%, the homogenizing of material is not enough, is difficult to acquisition super non magnetic.Therefore, make the sectional shrinkage in wire rolling become more than 99%, preferably become 99.5% ~ 99.99%.

In addition, when the homogenizing thermal treatment temp after wire rolling is less than 1000 DEG C, except intensity is higher, outside cold-workability is poor, because homogenizing is not enough, therefore super non magnetic also poor.Therefore, homogenizing thermal treatment temp is set to more than 1000 DEG C, is preferably set to more than 1050 DEG C.On the other hand, when homogenizing thermal treatment temp is greater than 1200 DEG C, ferromagnetic ferrite phase can be separated out and cause super non magnetic poor.Therefore, homogenizing thermal treatment temp can be set to less than 1200 DEG C, is preferably set to less than 1150 DEG C.The scope of homogenizing thermal treatment temp can be set to 1000 DEG C ~ 1200 DEG C, is preferably set to 1000 DEG C ~ 1150 DEG C.

By specifying like this to implement the sectional shrinkage in strong hot worked rod rolling and homogenizing heat-treat condition afterwards, reduce the segregation of trace, thus make super non magnetic stable.

Then, by implementing cold working to above-mentioned wire rod, being the work material comprising flat wire and/or special-shaped line by this wire forming, afterwards cold working being implemented to described work material, thus slide fastener metal parts can be manufactured.

At this, the intermediate heat treatment that can implement the thermal treatments such as annealing to work material in the cold working processes such as the rolling of work material, namely implement during rolling, hardness declines thus, therefore, it is possible to improve processibility further.Preferably the process equal with above-mentioned uniform heating treatment is carried out in this thermal treatment carried out.

In addition, at this, the hardness of work material be 220 ~ 360 by vickers hardness hv, tensile strength in the scope of 450MPa ~ 1100MPa and the elongation of work material is set to more than 1% time, the continuous molding of the sprocket etc. as slide fastener metal parts can be carried out, therefore and preferably.This that is, when the hardness HV of work material is less than 220 or tensile strength is below 450MPa, material deformation when sprocket is shaped is larger, be difficult to be processed into predetermined shape accurately, on the other hand, when situation, intensity that the hardness HV of work material is greater than 360 are greater than the situation of 1100MPa or elongation is less than 1%, there is the situation being difficult to the continuous molding carrying out sprocket.

In order to suppress the quick breakage of planting the shaping dies that tooth is shaped for carrying out chain tooth, making chain tooth plant the further stabilization of precision of tooth shaping, more preferably make the vickers hardness hv of work material be 220 ~ 310, and tensile strength being more preferably 700MPa ~ 800MPa.

In addition, for each sprocket 2a of the chain denture 2 of formation slide fastener 1, as a part for the manufacturing process of each sprocket 2a shown in Fig. 2, to be formed by metallic substance and in the scope of total length shape of cross section in roughly Y-letter shape, special-shaped line 12 as the sprocket of work material cuts off with predetermined length, sprocket is it can be used as to form component 12a, then component 12a is formed to sprocket and implement punch process, form the engaging head 2b engaged with other sprockets 2a in use, afterwards, the core 3a of zipper strip 3 is being configured at the formation of the sprocket in Y-letter shape component 12a's, under state between two leg 2c that bifurcated extends, make these legs 2c towards inner side viscous deformation, core 3a to be sandwiched between leg 2c and to clamp.Thus each sprocket 2a installation forming the chain denture 2 of slide fastener 1 can be formed on zipper strip 3.

At this, during sprocket 2 particularly in the slide fastener component parts of the slide fastener 1 illustrated in slide fastener metal parts pie graph 1 of the present invention, that formed as described above, because the hardness of the austenitic stainless steel of slide fastener metal parts is less, thus sprocket shaping fitting machine can be utilized to carry out the shaping of sprocket 2a as described above continuously, efficiency is manufactured therefore, it is possible to significantly promote.In addition, also in the process forming above-mentioned special-shaped line 12, repeatedly the thermal treatments such as annealing can be implemented, even if but do not implement such thermal treatment, due to the continuous molding of sprocket 2a can be carried out, therefore, also can prevent from raising by heat-treating the cost caused.

Further to improve manufacture efficiency from the viewpoint of the Needle analyzer flase operation more effectively preventing from being caused by slide fastener 1, preferably, the slide fastener component parts that upper stop member 5, lower stop member 6, pull head 4 etc. can be formed by metallic substance is also formed by slide fastener metal parts of the present invention.

In addition, such as by using to cut off with predetermined length as work material, flat upper stop member flat wire 15 and making it be plastic deformation to letter U shape shown in Fig. 2, form upper stop member and form component 15a, this upper stop member is formed component 15a clamp in the mode sandwiching core 3a, be fixed on zipper strip 3, thus upper stop member 5 can be formed on zipper strip 3.In addition, by lower stop member being formed component 16a clamping, being fixed on each zipper strip 3, lower stop member 6 can be installed, this lower stop member formed component 16a by by shown in Fig. 2, the special-shaped line 16 with the lower stop member as work material of the cross-sectional shape two letter U shapes linked in bottom cuts off with predetermined length and formed.Such as, but upper stop member 5 and lower stop member 6 are not limited to above-mentioned formation method, also can form upper stop member 5 by special-shaped line, and form lower stop member 6 by flat wire.

For illustrated pull head 4 be by elongate body multistage of the rectangular tabular of pair cross-section implement punch process and cut off at predetermined intervals to make slider body, and then on this slider body mounting spring and pulling-on piece, to omitted herein diagram.In addition, pulling-on piece can be formed by punching out predetermined shape by the tabular body of cross section rectangle.

In addition, when manufacturing slide fastener metal parts of the present invention, also can use the steel wire of aforesaid wire rod Wire Drawing.This steel wire has the one-tenth same with above-mentioned wire rod and is grouped into and Md30 value, presents super non magnetic thus.

In order to ensure cold-workability, preferably, the tensile strength of this steel wire is below 650MPa, and tension fracture shrinking percentage is more than 70%.The characteristic of such steel wire is by obtaining for starting material with above-mentioned wire rod.

In addition, steel wire is same with steel wire rod, by being Mn by composition composition control: be greater than 13.0% and less than 20%, Cu:1.0% ~ 4.0%, Al:0.01% ~ 1.3%, more than N:0.01 and be less than 0.10%, tensile strength becomes below 590MPa, and tension fracture shrinking percentage becomes more than 75%.By making such steel wire, cold-workability improves further.

In addition, Ni, Cu can have an impact to the magnetic of normal magnetic (Japanese: normal magnetic) steel.In the cross section of wire rod or steel wire the standard deviation of the Ni fluctuation of concentration of central part be less than 5% and the standard deviation of Cu fluctuation of concentration is less than 1.5%, because the formation of localized magnetization higher part position is inhibited, therefore, it is possible to stably obtain super non magnetic.Therefore, preferably, the standard deviation making Ni fluctuation of concentration is less than 5%, makes the standard deviation of Cu fluctuation of concentration be less than 1.5%.It is further preferred that make the standard deviation of Ni fluctuation of concentration be set to less than 3%, the standard deviation of Cu fluctuation of concentration is made to be less than 1.0%.

In addition, the Ni fluctuation of concentration of central part or the standard deviation of Cu fluctuation of concentration in the cross section of wire rod or steel wire are that result that the Ni concentration of any part in the cross-section center region to wire rod or steel wire and Cu concentration carries out map analysis and obtain is obtained according to utilizing EPMA (electron probe microanalyzer) to analyze.

At this, about the central zone of the cross section of wire rod or steel wire, when shape of cross section is circular, refer to the region surrounded with 1/4 of the diameter of the wire rod of starting at from center or the steel wire circle that is radius.In addition, when shape of cross section be limit number is the regular polygon of more than 4, the region surrounded with 1/4 of the cornerwise length by center of starting at from the center circle that is radius is referred to.In addition, when shape of cross section has the shaped cross-section shown in Fig. 3 ~ Fig. 5 forming steel wire coiled material described later, following region is referred to.First, the 1st diagonal lines 71 be made up of the straight line of the end far away apart from one end of the 1st line part 51a (91a) of one end of link the 1st line part 51a (91a) and the 2nd line part 52a (92a) is drawn.In addition, the 2nd diagonal lines 72 be made up of the straight line of the end far away apart from the other end of the 1st line part 51a (91a) of the other end of link the 1st line part 51a (91a) and the 2nd line part 52a (92a) is drawn.And, the region surrounded centered by the central position 73 on the length direction of the shorter diagonal lines (being the 2nd diagonal lines 72 in figure 3) in the 1st diagonal lines 71 and the 2nd diagonal lines 72, with 1/4 of the shorter cornerwise length in the 1st diagonal lines 71 and the 2nd diagonal lines 72 circle that is radius r is set to the central zone of cross section.

The manufacture method of above-mentioned steel wire is not particularly limited, and can use usual method.The manufacture method of common steel wire such as can list such method, that is, comprise by steel wire material with the operation of wire drawing rate 10% ~ 95% wire drawing and carry out at 900 DEG C ~ 1200 DEG C 5 seconds ~ 24 hours line material annealing (Japanese: ストラ Application De baked Blunt) operation.

In order to improve the dimensional precision of steel wire, the wire drawing rate of steel wire material is preferably more than 10%, is more preferably more than 20%.In addition, in order to prevent the fracture in drawing process, the wire drawing rate of steel wire material is preferably less than 95%, is more preferably less than 90%.

In order to eliminate the strain caused by wire-drawing process, the temperature of line material annealing is preferably more than 900 DEG C, is more preferably more than 1000 DEG C.In addition, in order to prevent the precipitation of ferromagnetic ferrite phase, the temperature of line material annealing is preferably less than 1200 DEG C, is more preferably less than 1150 DEG C.

In order to obtain sufficient annealing effect, the annealing time of line material annealing is preferably more than 5 seconds, is more preferably more than 20 seconds.In addition, in order to boost productivity, the annealing time of line material annealing is preferably less than 24 hours, is more preferably less than 1 hour.

The cross-sectional shape of steel wire is not particularly limited, and both can be circular, also can be the shaped cross-section such as Polygons.When steel wire is shaped cross-section, in order to be caused the distortion of cross-sectional shape after preventing online material annealing by winding, preferably make cross-sectional shape described later.

By illustrating that steel wire that is such, that have specific sectional shape reels to above under given conditions, steel wire coiled material can be formed.

In order to be processed into complicated shape from steel wire, preferably there is in the stage of steel wire the material of the nearly end form close to end article shape.But when steel wire being processed into the shaped cross-section of nearly end form, implementing Wire Drawing and make the steel wire of shaped cross-section to wire rod, when reeling after having carried out the annealing of line material, the cross-sectional shape of steel wire is likely out of shape.Therefore, preferably, even if steel wire is wound into the cross-sectional shape shown below that steel wire coiled material also can not be out of shape after making online material annealing.

Fig. 3 is the sectional view of the cross-sectional shape for illustration of the steel wire being wound into steel wire coiled material.Cross-sectional shape shown in Fig. 3 is rectangle, comprise there is the 1st line part 51a the 1st limit 51, have and to tilt the 4th limit 54 that the angle (α) of less than 30 ° and the 2nd limit 52 of the 2nd line part 52a be oppositely disposed with the 1st line part 51a, the 3rd limit 53 formed by the straight line of the end of one end close to the 1st limit 51 of one end and the 2nd limit 52 of being connected the 1st limit 51 and the straight line by the end of the other end on connection the 1st limit 51 and the other end close to the 1st limit 51 on the 2nd limit 52 formed relative to the 1st line part 51a.

In the cross-sectional shape shown in Fig. 3, the bearing of trend of the 1st line part 51a and the bearing of trend angulation α of the 2nd line part 52a are less than 30 °.When illustrated in Fig. 3, the 2nd line part 52a is with the angle configurations tilted relative to the 1st line part 51a, but the 2nd line part 52a on the 2nd limit 52 also can be parallel with the 1st line part 51a.

Usually, implement the annealing of line material to the steel wire of shaped cross-section, this steel wire obtains by implementing Wire Drawing to wire rod.Steel wire after the annealing of line material by passing from the right pinch roll of the roller with relative configuration, thus is carried by along predetermined throughput direction, is sent to the cylindrical drum for steel wire winding and is wound in this cylindrical drum.The steel wire of winding is unloaded by from cylindrical drum, and tension force during release winding, becomes steel wire coiled material.

In the cross-sectional shape shown in Fig. 3, when the bearing of trend of the 1st line part 51a and the bearing of trend angulation α of the 2nd line part 52a are greater than 30 °, in the manufacture method of steel wire coiled material described later, make the 1st line part 51a and the 2nd line part 52a respectively with the roller of the relative configuration of pinch roll to contacting, make steel wire the roller being clamped in pinch roll between state under by time, from the apex portion of the rectangle of stress concentration in steel wire cross-sectional shape of pinch roll.Its result, causes the apex portion in the cross-sectional shape of steel wire out of shape and distortion or steel wire produce damage sometimes.

In addition, when above-mentioned angulation α is greater than 30 °, be difficult to make the 1st line part 51a and the 2nd line part 52a respectively with the roller of pinch roll to contacting, steel wire is clamped in roller between state become unstable.Therefore, even if steel wire passes from pinch roll, also the controlling functions of pinch roll to steel wire throughput direction cannot be obtained fully.

And when above-mentioned angulation α is greater than 30 °, the 1st line part 51a being wound on the adjacent steel wire in cylindrical drum and the 2nd line part 52a not easily become the state that face contacts.Its result, the adjacent steel wire be wound in cylindrical drum easily becomes the state from when observing its cross section being point cantact each other.Adjacent steel wire observe each other its cross section be point cantact reel time, cause the part of the point cantact of steel wire to walk deformation or steel wire due to tension force during winding sometimes and produce damage.

In addition, when above-mentioned angulation α is greater than 30 °, due to above-mentioned steel wire is clamped in roller between state become unstable, therefore, the steel wire existed in course of conveying rotates, and becomes the apex portion of the rectangle in the cross-sectional shape of steel wire and the situation of the roller of pinch roll to the state contacted.In this case, the apex portion of the rectangle in the cross-sectional shape of steel wire is caused to walk deformation or steel wire generation damage sometimes.

In addition, when not configuring pinch roll, there is not the situation causing steel wire to be out of shape due to the stress from pinch roll.But, when not configuring pinch roll, due to by steel wire winding in cylindrical drum time steel wire rotate and reverse, be easy to become and be wound on the state that adjacent steel wire in cylindrical drum is point cantact each other when observing its cross section.Therefore, the cross-sectional shape of steel wire is caused to walk deformation or steel wire generation damage by tension force during winding.

With regard to the cross-sectional shape shown in Fig. 3, because above-mentioned angulation α is less than 30 °, therefore, the stress from pinch roll is difficult to the apex portion of the rectangle concentrated in the cross-sectional shape of steel wire.Thus, not easily occur that the apex portion of the rectangle in the cross-sectional shape of steel wire is out of shape and to be out of shape or steel wire produces the situation of damage.

In addition, when above-mentioned angulation α is below 30 °, above-mentioned steel wire is clamped in roller between in stable condition.Therefore, the 1st line part 51a of the adjacent steel wire of the steel wire coiled material after winding contacts with the 2nd easy face of line part 52a.Thus, by above-mentioned angulation is set to less than 30 °, the steel wire after can effectively preventing line material from annealing walks deformation or damage.

In addition, in order to effectively prevent out of shape, the damage of steel wire, above-mentioned angulation is preferably less than 15 °, most preferably is 0 ° (the 2nd line part 52a on the 2nd limit 52 is parallel with the 1st line part 51a).

In addition, in the steel wire shown in Fig. 3, the overall dimension on the direction orthogonal with the 1st line part 51a of cross-sectional shape i.e. the 1st size (T) is set to less than 3 with cross-sectional shape with the overall dimension on the parallel direction of the 1st line part 51a i.e. ratio (T/W) of the 2nd size (W).Above-mentioned be greater than 3 than (T/W) time, above-mentioned steel wire is clamped in roller between state become unstable.Above-mentioned be less than 3 than (T/W) time, above-mentioned steel wire is clamped in roller between state become stable, out of shape, the damage of steel wire can be prevented.In order to make above-mentioned steel wire be clamped in roller between state more stable, more effectively prevent out of shape, the damage of steel wire, be above-mentionedly preferably less than 1.5 than (T/W), be more preferably less than 1.

In addition, in steel wire shown in Fig. 3, the length L1 on the 1st limit 51 (identical with the overall dimension (W) on the parallel direction of the 1st line part 51a with in Fig. 3) is more than or equal to the length L2 on the 2nd limit 52, relative to the 2nd size (W), the length L1 on the 1st the limit 51 and length L2 on the 2nd limit 52 is respectively in the scope of W/10 ~ W.When the length L2 on the length L1 on the 1st limit 51 and the 2nd limit 52 is all less than W/10, above-mentioned steel wire is clamped in roller between state become unstable.When the length L2 on the length L1 on the 1st limit 51 and the 2nd limit 52 is in above-mentioned scope, above-mentioned steel wire is clamped in roller between in stable condition, can prevent steel wire out of shape, damage.In order to more effectively prevent out of shape, the damage of steel wire, the length L1 on the 1st the limit 51 and length L2 on the 2nd limit 52 is preferably W/5 ~ W.

At this, the steel wire winding of the cross-sectional shape of steel wire coiled material preferably shown in Fig. 3.Therefore, during fabrication, even if make the 1st line part 51a and the 2nd line part 52a respectively with the roller of the relative configuration of pinch roll to contacting, make steel wire the roller being clamped in pinch roll between state under pass through, the stress from pinch roll also not easily concentrates on the apex portion of the rectangle in the cross-sectional shape of steel wire.And, this steel wire coiled material become above-mentioned steel wire is clamped in roller between in stable condition state.Therefore, the state that the 1st line part 51a that the steel wire coiled material after winding is easy to become adjacent steel wire contacts with the 2nd line part 52a face.

Thus, when this steel wire coiled material, the cross-sectional shape of steel wire during fabrication can be suppressed to produce out of shape, damage.In addition, due to this steel wire coiled material by can be used as nearly end form stainless steel wire, the steel wire of soft shaped cross-section formed, and therefore, is applicable to the shaping of the super non-magnetic part of complicated shape.

The cross-sectional shape being wound into the steel wire of steel wire coiled material is not limited to the illustrative mode of Fig. 3.

(c) of (a) ~ Fig. 4 of Fig. 4 is the sectional view of the cross-sectional shape illustratively representing other steel wires.

The cross-sectional shape difference of the steel wire shown in the cross-sectional shape of the steel wire shown in (a) of Fig. 4 and Fig. 3 is only on the 1st limit 51B, be formed with recess C1 and be formed with recess C2 on the 2nd limit 52B.Thus, in (a) of Fig. 4, identical Reference numeral is marked to the component identical with Fig. 3, omits the description.

Recess shown in (a) of Fig. 4 both can be formed on both the 1st limit 51B and the 2nd limit 52B, also can only be formed in the one in the 1st limit 51B and the 2nd limit 52B.In addition, recess also can be located on the 3rd limit 53 and/or the 4th limit 54.In addition, the quantity of the recess on each limit both can be 1 as shown in (a) of Fig. 4, also can be more than 2.

In the steel wire of the cross-sectional shape shown in (a) of Fig. 4, the 1st limit 51B comprises the 1st limit component 51b and the 2nd limit component 51c that extend on same straight line across recess C1.1st limit component 51b both can be identical with the length of the 2nd limit component 51c, also can be different.

Width dimensions be more than W/10 recess C1 for the mutual contact of the adjacent steel wire of state of winding, pinch roll roller to and the 1st line part 51a between contact do not help.Therefore, when (a) as Fig. 4 be shown in that the 1st limit 51B is formed with width dimensions is the recess C1 of more than W/10, the width dimensions LC1 of recess C1 is not included in the length L1 of the 1st limit 51B.Thus, the length L1 of the 1st limit 51B in the cross-sectional shape shown in (a) of Fig. 4 is the length being added up to by the length L1c of the length L1b of the 1st limit component 51b extended on same straight line and the 2nd limit component 51c and obtain.

In the steel wire of the cross-sectional shape shown in (a) of Fig. 4, the 2nd limit 52B comprises the 1st limit component 52b and the 2nd limit component 52c that extend on same straight line across recess C2.1st limit component 52b both can be identical with the length of the 2nd limit component 52c, also can be different.

Width dimensions is that the recess C2 of more than W/10 does not help with the 2nd contacting of line part 52a for the roller of the mutual contact of the adjacent steel wire of state of winding, pinch roll.Therefore, the 2nd limit 52B is formed width dimensions is the recess C2 of more than W/10, the width dimensions LC2 of recess C2 is not included in the length L2 of the 2nd limit 52B.Thus, the length L2 of the 2nd limit 52B in the cross-sectional shape shown in (a) of Fig. 4 is the length being added up to by the length L2c of the length L2b of the 1st limit component 52b extended on same straight line and the 2nd limit component 52c and obtain.

In addition, the width dimensions of recess C1, C2 in cross-sectional shape is less than W/10, even if be formed with recess on the 1st limit 51B and/or the 2nd limit 52B, the impact that the adjacent steel wire for reeling condition contacts each other also can be ignored.In addition, the width dimensions of recess C1, C2 in cross-sectional shape is less than W/10, the impact that the 1st line part 51a is produced the stability of the state contacted with the roller of the relative configuration of pinch roll respectively with the 2nd line part 52a can also be ignored.Therefore, the width dimensions of the recess C1 in cross-sectional shape is less than W/10, in the length L1 of the 1st limit 51B, comprise the width dimensions of recess C1.In addition, the width dimensions of the recess C2 in cross-sectional shape is less than W/10, in the length L2 of the 2nd limit 52B, the width dimensions of recess C2 is comprised.

The steel wire of the cross-sectional shape shown in (a) of Fig. 4 comprises the 1st limit 51B with the 1st line part 51a and the 2nd limit 52B with the 2nd line part 52a, the 2nd line part 52a and is oppositely disposed with the 1st line part 51a with the angle of less than 30 ° (α) inclination relative to the 1st line part 51a.And, in the steel wire of the cross-sectional shape shown in (a) of Fig. 4, overall dimension on the direction orthogonal with the 1st line part 51a of cross-sectional shape i.e. the 1st size (T) is less than 3 with the ratio (T/W) of the overall dimension on the direction parallel with the 1st line part 51a of cross-sectional shape i.e. the 2nd size (W) (being the length being added up to by the length L1c of the length L1b of the 1st limit component 51b, the width dimensions LC1 of recess C1 and the 2nd limit component 51c and obtain in the diagram).And, in the steel wire of the cross-sectional shape shown in (a) of Fig. 4, the length L1 of the 1st limit 51B is more than or equal to the length L2 of the 2nd limit 2B, and relative to the 2nd size (W), the length L1 of the 1st limit 51B and the length L2 of the 2nd limit 52B is respectively in the scope of W/10 ~ W.

Thus, in the steel wire coiled material of the steel wire winding of the cross-sectional shape shown in (a) of Fig. 4, also same with the steel wire coiled material of the steel wire winding of the cross-sectional shape shown in Fig. 3, the cross-sectional shape of steel wire during fabrication can be suppressed to produce out of shape, damage.

In addition, in the steel wire of the cross-sectional shape shown in (a) of Fig. 4,1st limit 51B is formed with recess C1, and on the 2nd limit 52B, be formed with recess C2, therefore, the steel wire coiled material of the steel wire winding of the cross-sectional shape shown in (a) of Fig. 4 is suitable as the stainless steel wire of the nearly end form of the junctor of such as cable etc.

In addition, in the cross-sectional shape of steel wire being wound into steel wire coiled material, the 1st limit component on the 1st limit (and/or the 2nd limit) and the 2nd limit component both can as (a) of Fig. 4 be shown on same straight line and extend, also can extend on different straight lines as the 1st limit of (c) of (b) of Fig. 4 and Fig. 4.

In the cross-sectional shape shown in (b) of Fig. 4, the 1st limit component 80b of the 1st limit 80B is parallel with the 2nd limit component 80c.In this case, as long as the size d1 between the position on the position on bearing of trend on the direction orthogonal with the 1st line part 51a, the 1st limit component 80b and the bearing of trend of the 2nd limit component 80c is less than 1/10 of the 1st size (T), even if the 1st limit component 80b of the 1st limit 80B and the 2nd limit component 80c extends on different straight lines, also the effect identical with the cross-sectional shape of (a) of Fig. 4 can be obtained.

In addition, in (b) of Fig. 4, be illustrated for the situation that the 1st limit component 80b of the 1st limit 80B and the 2nd limit component 80c extends on different straight lines, but also can be that the 1st limit component on the 2nd limit and the 2nd limit component extend on different straight lines.When the 1st limit component on the 2nd limit and the 2nd limit component extend in a different direction and the 1st limit component and the 2nd limit member parallel, as long as be of a size of less than 1/10 of the 1st size (T) between the position on the position on the bearing of trend of the 1st limit component on the direction orthogonal with the 1st line part 51a, the 2nd limit and the bearing of trend of the 2nd limit component, just the effect identical with the cross-sectional shape of (a) of Fig. 4 can be obtained.

In addition, shown in (c) of such as Fig. 4, the 1st limit component 80b of the 1st limit 80B and the 2nd limit component 80c extends on different straight lines across recess C1, in 1st limit component 80b and the uneven situation of the 2nd limit component 80c, as long as the bearing of trend of the 2nd limit component 80c is less than 30 ° relative to the angle θ of the bearing of trend of the 1st limit component 80b, just the effect identical with the cross-sectional shape of (a) of Fig. 4 can be obtained.That is, the 1st limit component 80b and the 2nd limit component 80c both as shown in (c) of Fig. 4, relatively can tilt to the direction forming mountain, also relatively can tilt to the direction forming paddy.

In addition, under the 1st limit component 80b and the uneven situation of the 2nd limit component 80c, the bearing of trend of the 1st line part 51a refers to the bearing of trend of in the 1st limit component 80b and the 2nd limit component 80c, longer limit component (being the 2nd limit component 80c in (c) of Fig. 4).In addition, the bearing of trend of the 1st line part 51a when the 1st limit component is identical with the length of the 2nd limit component, refer to measurement respectively with the 1st limit component, the 2nd limit component for the 2nd size (W) when benchmark, the bearing of trend of the limit component of the 2nd longer dimension.

In addition, in (c) of Fig. 4, extend on different straight lines with the 1st limit component 80b of the 1st limit 80B and the 2nd limit component 80c, 1st limit component 80b and the 2nd limit uneven situation of component 80c of the 1st limit 80B are that example is illustrated, and also can be that the 1st limit component on the 2nd limit and the 2nd limit component extend and not parallel on different straight lines.In this case, as long as the 1st limit component on the 2nd limit and the 2nd limit component all tilt less than 30 ° relative to the bearing of trend of the 1st line part 51a, just the effect identical with the cross-sectional shape of (a) of Fig. 4 can be obtained.

In addition, when the straight line relative with the 1st line part 51a exists more than two articles, the 2nd line part 52a is determined based on following (1) ~ (4).

(1) when the straight line of less than 30 ° of tilting relative to the 1st line part 51a is one article, this straight line is set to the 2nd line part 52a.

(2) when the straight line of less than 30 ° of tilting relative to the 1st line part 51a has many articles, straight line the longest for length is set to the 2nd line part 52a.

(3) when the straight line of less than 30 ° of tilting relative to the 1st line part 51a have many articles, straight line that length is the longest have more than two articles, wherein minimum with the 1st line part 51a angulation straight line is set to the 2nd line part 52a.

(4) when the straight line of less than 30 ° of tilting relative to the 1st line part 51a have many articles, straight line that length is the longest have more than two articles, wherein minimum with the 1st line part 51a angulation straight line have more than two articles, the straight line of appointing in such straight line can be set to the 2nd line part 52a.

Fig. 5 is the sectional view of another example of the cross-sectional shape representing steel wire.The difference of the cross-sectional shape shown in the cross-sectional shape of the steel wire shown in Fig. 5 and Fig. 3 is that the both ends of each limit 51C, 52C, 53C, 54C become curve, and limit is connected with the level and smooth curve of lateral dominance.

The 1st limit 51C shown in Fig. 5 has the 1st line part 91a being configured in length direction central authorities.In addition, the 2nd limit 52C has the 2nd line part 92a being configured in length direction central authorities.1st line part 91a and the 2nd line part 92a is oppositely disposed.Same with the cross-sectional shape shown in Fig. 3, the 2nd line part 92a tilts with the angle of less than 30 ° (α) relative to the 1st line part 91a.

In addition, in the cross-sectional shape shown in Fig. 5 similarly, the overall dimension on orthogonal with the 1st line part 91a direction i.e. the 1st size (T) is less than 3 with the overall dimension on the direction parallel with the 1st line part 91a of the cross-sectional shape i.e. ratio (T/W) of the 2nd size (W).

As shown in Figure 5, one or two ends in the 1st limit 51C (and/or the 2nd limit 52C) are curves, the contact range 91b described later in curve, 91c, 92b, 92c have promote the contact of the adjacent steel wire of reeling condition mutual face and promote the roller that steel wire is clamped in pinch roll between the function of state stability.

Thus, in the 1st limit 51C shown in Fig. 5, contact range 91b, the length L91b of 91c of the length L91a of the 1st line part 91a and curve, the total size of L91c are called the length L1 of the 1st limit 51C.In addition, in the 2nd limit 52C shown in Fig. 5, contact range 92b, the length L92b of 92c of the length L92a of the 2nd line part 92a and curve, the total size of L92c are called the length L2 of the 2nd limit 52C.

Contact range 91b, the 91c (92b, 92c) of curve refer to and to draw from the end of the 1st line part 91a (or the 2nd line part 92a) relative to the 1st line part 91a (or the 2nd line part 92a) with the straight line of the angular slope of 30 °, the scope from the intersection point of this straight line and curve to the end of the 1st line part 91a (or the 2nd line part 92a).

, the length L1 of the 1st limit 51C is more than the length L2 of the 2nd limit 52C in the cross-sectional shape shown in Fig. 5 similarly, and with regard to the 2nd size (W), the length L1 of the 1st limit 51C and the length L2 of the 2nd limit 52C is respectively in the scope of W/10 ~ W.

The steel wire of the cross-sectional shape shown in Fig. 5 comprises the 1st limit 51C with the 1st line part 91a and the 2nd limit 52C with the 2nd line part 92a, 2nd line part 92a relative to the 1st line part 91a with the angle of less than 30 ° (α) tilt and be oppositely disposed with the 1st line part 91a, overall dimension on the direction orthogonal with the 1st line part 91a of cross-sectional shape i.e. the 1st size (T) is less than 3 with the overall dimension on the direction parallel with the 1st line part 91a of the cross-sectional shape i.e. ratio (T/W) of the 2nd size (W), the length L1 of the 1st limit 51C is more than the length L2 of the 2nd limit 52C, with regard to the 2nd size (W), the length L1 of the 1st limit 51C and the length L2 of the 2nd limit 52C is respectively in the scope of W/10 ~ W.

Thus, in the steel wire coiled material of the steel wire winding of the cross-sectional shape shown in Fig. 5, same with the steel wire coiled material of the steel wire winding of the cross-sectional shape shown in Fig. 3, the cross-sectional shape of steel wire during fabrication also can be suppressed to produce out of shape, damage.

Further, in the steel wire of the cross-sectional shape shown in Fig. 5, because each limit 51C, 52C, 53C, 54C utilize level and smooth curve to connect, therefore, the stress from pinch roll more not easily concentrates on the apex portion in the cross-sectional shape of steel wire.In addition, make the 1st line part 91a and the 2nd line part 92a more stable to the state contacted with the roller of the relative configuration of pinch roll respectively.Therefore, the steel wire coiled material of the steel wire winding of the cross-sectional shape shown in Fig. 5 can suppress the cross-sectional shape of steel wire during fabrication to produce out of shape, damage further.

In addition, the shape forming the steel wire of steel wire coiled material of the present invention is not limited to the cross-sectional shape shown in Fig. 3 ~ Fig. 5, can carry out various change in the scope not departing from its purport.

Then, the manufacture method of steel wire coiled material is described.

In order to manufacture steel wire coiled material, first, Wire Drawing being implemented to the wire rod with mentioned component composition, makes any one shaped cross-section in Fig. 3 ~ Fig. 5, implement the annealing of line material and make steel wire.As described above, the wire drawing rate of the Wire Drawing of wire rod is preferably 10% ~ 95%.In addition, as described above, the annealing temperature in line material annealing process is preferably 900 DEG C ~ 1200 DEG C, and annealing time is preferably 5 seconds ~ 24 hours.

In the manufacture method of this steel wire coiled material, after implementing the annealing of line material, steel wire is made to pass pinch roll and be reeled.When making steel wire pass pinch roll, with the 2nd line part on the 1st line part on the 1st limit and the 2nd limit respectively with the roller of the relative configuration of pinch roll to the mode contacted clamp through.Then, pinch roll is being utilized to be transported to cylindrical drum while controlling as the direction relative with the 1st line part of steel wire or the 2nd line part for the outside surface of cylindrical drum of steel wire winding by throughput direction, by steel wire and wound thereon.Thus, adopt the method that the cross-sectional shape of steel wire during fabrication can be suppressed to produce out of shape, damage.

In addition, at this, the steel wire after making line material anneal, through before pinch roll, in order to correct cross-sectional shape or import transfer, also can implement smooth processing.

In addition, when the cross-sectional shape of steel wire is circular, the cross-sectional shape that there is not steel wire during fabrication produces problem that is out of shape, damage.Thus, when the cross-sectional shape of steel wire is circular, also can utilizes any one method known winding steel wire and make steel wire coiled material.

[embodiment]

(test example 1)

Trial-production can be used in the wire rod of slide fastener metal parts of the present invention, evaluates the tensile strength of this wire rod, tension fracture shrinking percentage, cold-workability, erosion resistance and magneticflux-density.Represent in table 1 ~ table 3 each wire rod of embodiment and comparative example become to be grouped into.

[table 1]

[table 2]

[table 3]

Assuming that stainless AOD (ArgonOxygenDecarburization) melting as low price melting technology, melt in the vacuum melting stove of 100kg, be cast as the strand with the diameter 180mm that the one-tenth shown in table 1 ~ table 3 is grouped into.By the strand wire rolling that obtains, (sectional shrinkage: 99.9%) to diameter 6mm, completes hot rolling at 1000 DEG C.Afterwards, carry out water-cooled, pickling after maintaining 30 minutes as solution treatment (homogenizing thermal treatment) at 1050 DEG C, make the wire rod of cross section circle.

In addition, for a part of wire rod, utilize common steel wire manufacturing process Wire Drawing to become the steel wire of the cross section circle of diameter 4.2mm, implement the line material annealing keeping 3 minutes at 1050 DEG C, make steel wire.

Evaluate the tensile strength of wire rod and the steel wire obtained like this, tension fracture shrinking percentage, cold-workability, erosion resistance and magnetic.This result is represented in table 4 ~ table 6.In addition, various as a result, are the characteristic values measured under wire rod state for No.1,3,5 ~ 76,82 ~ 89,116 ~ 119 shown in table 4 ~ table 6 are the characteristic values measured under steel wire state for No.2,4.

[table 4]

[table 5]

[table 6]

※ is with underscore to represent and exceed the solid value of predetermined model.

Tensile strength, the tension fracture shrinking percentage of wire rod and steel wire is measured according to JISZ2241.

Steel wire in predetermined composition compositing range is all tensile strengths is below 650MPa, and tension fracture shrinking percentage is more than 70%.Wherein, be set to Mn: be greater than 13.0% and less than 20%, Cu:1.0% ~ 4.0%, Al:0.01% ~ 1.3%, more than N:0.01 and be less than 0.10%, when composition addition is set to more suitable amount, display tensile strength is below 590MPa, tension fracture shrinking percentage is more than 75% value good like this.

By cutting the cylindrical sample of diameter 4mm, height 6mm from wire rod or steel wire, implement cold reduction processing (rate of straining 10/s) with working modulus 75% in the height direction and make flat disk shape, then, cold-workability is evaluated according to resistance to deformation when having flawless in the sample after compression process and measure compression process.

When do not have crackle, can be little with the resistance to deformation (1100MPa) than SUS304 resistance to deformation carry out cold reduction processing, cold-workability is evaluated as zero, when creating the resistance to deformation of crackle or more than SUS304, cold-workability is evaluated as ×.In addition, when showing the resistance to deformation of identical with SUSXM7 (below 1000MPa), cold-workability is evaluated as ◎.

The cold-workability of the steel wire in predetermined composition compositing range is zero or ◎, the cold-workability that display is excellent.

In accordance with the salt spray testing of JISZ2371, implementing the spray testing of 100 hours, evaluating erosion resistance according to whether getting rusty.If the situation of not getting rusty, then erosion resistance being evaluated as well (zero), when generating the red rusts such as unstable rust (Japanese: stream れ Qiang), erosion resistance being evaluated as bad (×).

The erosion resistance of the steel wire in predetermined composition compositing range is all good.

The magnetic field of 10000 (Oe) given by sample after the cold reduction processing utilizing the evaluation of DC magnetization testing apparatus to cold-workability to adopt, evaluates magnetic according to magneticflux-density at that time.

In steel wire in predetermined composition compositing range, no matter whether after cold reduction processing, magneticflux-density is all below 0.01T, particularly when being set to Mn: be greater than 13.0% and less than 24.9%, Ni: be greater than 6.0% and be less than 10.0%, below Md30:-167, display magneticflux-density is better like this super non magnetic of below 0.007T.

Then, the impact that the hot-work rate of wire rolling and homogenizing thermal treatment temp afterwards produce for the spot segregation of Ni, Cu is investigated.

The strand of the diameter 180mm of steel A, CW that the one-tenth shown in the table 1 manufactured in the same manner as the operation of the wire rod shown in manufacture table 4 or table 5 or table 2 is grouped into, with the sectional shrinkage wire rolling shown in table 7 to any one in diameter 6mm (sectional shrinkage 99.9%) or diameter 30mm (sectional shrinkage 99.0%), diameter 30mm (sectional shrinkage 97.0%), at 1000 DEG C, complete hot rolling.Afterwards, as solution treatment (homogenizing thermal treatment), the No.80 of table 7,94 is kept at the temperature of 900 DEG C 30 minutes, the No.77 of table 7,81,90,95,97,99 kept at the temperature of 1050 DEG C 30 minutes, the No.78 of table 7,91,92,96,98 kept at the temperature of 1150 DEG C 30 minutes, the No.79 of table 7,93 kept at the temperature of 1250 DEG C carry out water-cooled, pickling after 30 minutes, make and analyse and observe rounded wire rod.In addition, utilizing common steel wire manufacturing process a part of wire rod Wire Drawing to be become, diameter 4.2mm's analyse and observe rounded steel wire, implements the line material annealing keeping 3 minutes at 1050 DEG C, make steel wire (No.96 ~ 99 of table 7).

Then, the tensile strength of obtained wire rod, steel wire, tension fracture shrinking percentage, cold-workability, erosion resistance, magnetic are evaluated as described above.In addition, following method is utilized to calculate the standard deviation of the segregation of Ni and Cu of steel and steel wire.This evaluation result is represented in table 7.In addition, in the various results shown in table 7, being the characteristic values at wire rod state measurement for No.77 ~ 81,90 ~ 95, is the characteristic values measured under steel wire state for No.96 ~ 99.The method identical with above-mentioned wire rod is utilized to measure the various characteristic values of steel wire.

[table 7]

The Ni concentration of following calculating wire rod or steel wire and the standard deviation (standard deviation of the fluctuation of central part in cross section) of Cu concentration.First, utilize EPMA analyze to start at the center of the cross section from wire rod or steel wire, any part in region that 1/4 circle that is radius of the diameter of wire rod or steel wire surrounds implements the map analysis of concentration, evaluate.In EPMA analyzes, to the concentration of vertical 200 points of 1 μm of spacing, cancellate measuring point measurement Ni and Cu of horizontal 200, obtain the standard deviation of Ni fluctuation of concentration and Cu fluctuation of concentration.

As shown in table 7, be more than 99% when making the hot-work rate of wire rod (sectional shrinkage of wire rolling), when making homogenizing thermal treatment temp be 1000 DEG C ~ 1200 DEG C, the standard deviation of Ni segregation is less than 5%, the standard deviation of Cu segregation is less than 1.5%, can obtain good cold-workability and super non magnetic.

Then, in order to implement annealing, obtain steel wire coiled material that the is soft and shaped cross-section that shape is not out of shape, the impact of shaped cross-section for the shape generation out of shape after the annealing of line material of steel wire is investigated.

The strand of the diameter 180mm of steel A, CW of being grouped into by the one-tenth shown in the table 1 manufactured in the same manner as the operation of the wire rod shown in manufacture table 4 or table 5 or table 2 to diameter 6mm, completes hot rolling with sectional shrinkage 99.9% wire rolling at 1000 DEG C.Afterwards, keep carrying out water-cooled, pickling after 30 minutes at 1050 DEG C as solution treatment (homogenizing thermal treatment), make and analyse and observe rounded wire rod.

Special-shaped line rolling (Wire Drawing) is implemented to the rounded wire rod of analysing and observe of the diameter 6mm made, be shaped and there is the cross-sectional shape shown in Fig. 3 and the steel wire of the shaped cross-section of the 4 limit shapes that the size in each portion is changed as shown in table 8ly, afterwards, implement at 1050 DEG C keep 3 minutes line material annealing after, utilize method shown below to reel, make steel wire coiled material.

In table 8, " T " is the overall dimension on the direction orthogonal with the 1st line part of cross-sectional shape, and " W " is the overall dimension on the direction parallel with the 1st line part of cross-sectional shape." α " is the 1st line part 1a and the 2nd line part 2a angulation." L1 " is the length on the 1st limit 1, and " L2 " is the length on the 2nd limit 2.As method for winding, clip steel wire respectively make it pass through with the 1st line part 51a with the 2nd line part 52a with the roller be oppositely disposed abreast of pinch roll to the mode contacted, reel this steel wire while the throughput direction controlling steel wire.

[table 8]

For the steel wire of steel wire coiled material, whether visual assessment cross-sectional shape has out of shape and whether has damage (shape evaluation).And, be evaluated as there is average evaluation that is out of shape, damage ×, being zero by there is not average evaluation out of shape, is ◎ by neither there is the average evaluation that also there is not damage out of shape.This evaluation result is represented in table 8.

As shown in table 8, some in T/W, α, L1 is in outside the scope of the invention, the steel wire of steel wire coiled material produces out of shape, damage, and shape evaluation is ×.

Known according to table 8, be set to α≤30 ° by the cross-sectional shape of the steel wire by steel wire coiled material, T/W is less than 3, shaped cross-section that L1 and L2 is in the scope of W/10 ~ W, out of shape, the damage of steel wire production cross section shape can be suppressed.

(test example 2)

Then, hardness, tensile strength and the elongation of the work material (Y shape bar) that the stainless steel that evaluation ideas can be used in slide fastener metal parts of the present invention makes, and utilize this stainless steel to manufacture experimently the fastener chain that a pair chain denture is intermeshed, evaluate its inspection pin performance, be below described.

Table 9 represents that stainless that line and fastener chain adopt becomes to be grouped into.

[table 9]

The embodiment 1,2 with the composition shown in table 9 and comparative example 1,2 is utilized to manufacture experimently the fastener chain of chain length 20cm and chain length 40cm respectively, as shown by the arrows in Figure 6, the each fastener chain making these manufacture experimently by root measure the magneticflux-density now produced with vertical with the direct of travel Needle analyzer (APA-6000, " サ Application コウ Electricity institute " system) directed through representing with vertical view in Fig. 6 variable quantity be used as inspection pin value, and with Φ 1.5 iron ball than namely evaluating this inspection pin value with the ratio of the iron ball value of Φ 1.5mm.This result is represented in table 10.The less expression of numerical value of the Φ 1.5 iron ball ratio shown in table 10 is more difficult is detected by Needle analyzer, from the viewpoint of preventing flase operation, represents inspection pin excellent performance.

[table 10]

In addition, in content shown in table 10, matter other H does not implement thermal treatment when referring to and carry out cold working to work material in the process of shaping sprocket, in addition, the midway of the cold working (rolling) that the other H/2 of matter refers at work material implements intermediate heat treatment, in addition, the other O of matter refers to and implement thermal treatment after carrying out cold working (rolling) to work material, is arranged on zipper strip by sprocket afterwards.

According to the content shown in table 10, under chain length is any one situation in 20cm and 40cm, the value of the Φ 1.5 iron ball ratio of the other H of matter of comparative example 1 and the other O of matter of comparative example 1 is excessive and cannot measure, in contrast, embodiment 1 and embodiment 2 Φ 1.5 iron ball than any one matter not in be all far smaller than 100%.

In addition, the section hardness of the work material made when matter is not respectively H, H/2, O, tensile strength and elongation are measured respectively for embodiment 1 and comparative example 1,2.The results are shown in table 11.These section hardness, tensile strength are all that numerical value is less, processibility is more excellent, manufacture efficiency therefore, it is possible to contribute to promoting.

In addition, under the condition (temperature 1000 DEG C ~ 1200 DEG C) equal with the homogenizing thermal treatment illustrated before, carry out the intermediate heat treatment of the other H/2 of matter.

[table 11]

As shown in table 11, when comparing according to matter other H, H/2, O, the hardness of embodiment 1 and tensile strength less than comparative example 2.With regard to elongation, embodiment 1 all has the elongation of more than 1% under any one matter is other.

Thus known, adopt slide fastener metal parts of the present invention, have and can not cause the non magnetic of Needle analyzer flase operation degree, and can productivity be promoted.

description of reference numerals

1, slide fastener; 2, chain denture; 2a, sprocket; 2b, engaging head; 2c, leg; 3, zipper strip; 4, pull head; 5, upper stop member; 6, lower stop member; 12, the special-shaped line of sprocket; 12a, sprocket form component; 15, the flat wire of upper stop member; 15a, upper stop member form component; 16, the special-shaped line of lower stop member; 16a, lower stop member form component.

Claims

1. a slide fastener metal parts, it is by mass percentage containing below C:0.08%, Si:0.05% ~ 2.0%, Mn: be greater than 8.0% and less than 25.0%, below P:0.06%, below S:0.01%, Ni: be greater than 6.0% and less than 30.0%, Cr:13.0% ~ 25.0%, Cu:0.2% ~ 5.0%, N: be less than 0.20%, Al:0.002% ~ 1.5%, and C+N is less than 0.20%, rest part is Fe and inevitable impurity, and, the Md30 represented with following formula (a) is for below-150

Md30＝413－462(C+N)－9.2Si－8.1Mn－9.5Ni－13.7Cr－29Cu·······(a)

Wherein, the symbol of element in formula (a) represents the content represented with mass percent of this element.

2. slide fastener metal parts according to claim 1, wherein,

The magneticflux-density shown in the magnetic field of 10000 oersteds is below 0.01T.

3. slide fastener metal parts according to claim 1 and 2, wherein,

This slide fastener metal parts is the parts implementing cold working or cold working and thermal treatment.

4. the slide fastener metal parts according to any one of claims 1 to 3, wherein,

This slide fastener also contains the Mo of less than 3.0% by mass percentage with metal parts, substitute the Md30 represented with above-mentioned formula (a), and the Md30 ' represented with following formula (b) is below-150,

Md30’＝413－462(C+N)－9.2Si－8.1Mn－9.5Ni－13.7Cr－18.5Mo－29Cu·······(b)。

5. the slide fastener metal parts according to any one of Claims 1 to 4, wherein,

Slide fastener metal parts is also containing at least one element selected from Nb, V, Ti, W, Ta, and each is less than 1.0% by mass percentage.

6. the slide fastener metal parts according to any one of Claims 1 to 5, wherein,

This slide fastener metal parts is also containing the Co being less than 3.0% by mass percentage.

7. the slide fastener metal parts according to any one of claim 1 ~ 6, wherein,

This slide fastener metal parts is also containing the B being less than 0.015% by mass percentage.

8. the slide fastener metal parts according to any one of claim 1 ~ 7, wherein,

This slide fastener metal parts also containing from be by mass percentage below Ca:0.01%, below Mg:0.01%, below REM:0.05% selection more than one.

9. a slide fastener (1), it is formed by slide fastener component parts, and this slide fastener component parts comprises: a pair chain denture (2), and multiple sprocket (2a) is arranged and forms by it; And pull head (4), it can along the slippage of described chain denture (2), to make each sprocket (2a) of these chain dentures (2) be engaged with each other or be separated, wherein,

Each sprocket (2a) in described slide fastener component parts, at least chain denture (2) slide fastener metal parts according to any one of claim 1 ~ 8 is formed.

10. slide fastener according to claim 9, wherein,

This slide fastener has the inspection pin performance representing below Φ 1.5mm with iron ball value.

The manufacture method of 11. 1 kinds of slide fastener metal partss, wherein,

In the process of the slide fastener metal parts according to any one of manufacturing claims 1 ~ 8, to having the wire rod or steel wire enforcement cold working that are predetermined to be and are grouped into, this wire rod or steel wire are configured as the work material formed by flat wire and/or special-shaped line, afterwards cold working are implemented to described work material.

The manufacture method of 12. slide fastener metal partss according to claim 11, wherein,

The section hardness of described work material is expressed as 220 ~ 360 with vickers hardness hv, and the elongation of this work material is more than 1%.

The manufacture method of 13. slide fastener metal partss according to claim 11 or 12, wherein,

The tensile strength of described work material is in the scope of 450MPa ~ 1100MPa.

The manufacture method of 14. slide fastener metal partss according to any one of claim 11 ~ 13, wherein,

Thermal treatment is implemented in the cold worked process of described work material.