How does the line choose electrode silk in cut treatment

2Ra above) electricity of needs high frequency pulse. This depends on the resistor of electrode silk or electrical conductivity. Red copper is one of material with highest electrical conductivity, it is used to as what measure other data fiducial. The electrical conductivity mark of red copper is 100%IACS (standard of international anneal red copper) , and brass electrical conductivity is 20% . 2, physical characteristic tensile strength: Tensile strength is to measure material to be in the ability that is ruptured by the resistance when radial load. It is to use unit cut area can susceptive weight comes of scale, be like imperial PSI (pound / square inch) or metric N/mm2(Newton / square millimeter) . The material that red copper belongs to tensile strength lowest (245N/mm2) , and molybdenum is highest (1930N/mm2) . The tensile strength of electrode silk depends on the choice of material and technology of all sorts of heat treatment and drawing processing. Electrode silk is divided to be " of hard silk of " of " soft silk and " sometimes, to different equipment and application, each have its advantage. Memory effect: Hard " of the " soft " of this and electrode silk or " is direct and relevant. Soft silk is smoked linear memorial capacity did not restore when leaving bobbin, cannot use at wearing silk automatically so, but this does not have an influence to cut, because add,man-hour increased pulling force on electrode silk. Soft silk is applied to on, the big rake cut that the equipment that next seal wire chew cannot tilt has exceeding 7 spending. And hard silk is the optimal choice that equips filar plane automatically, at the same time because tensile strength is high, because the electric current when cut and the shake capability that rinse force to cause silk are stronger,its resist. Outspread rate: Outspread rate is the per cent that change of electrode silk length causes as a result of tension and quantity of heat in cut treatment. The outspread rate of soft silk can arrive greatly 20% , and hard silk is less than 2% . Soft silk adds man-hour in rake, the electrode silk with outspread high rate can more the geometrical precision that assures oblique plane, of the generation when and softer electrode silk is in seal wire chew sliding shake lesser also. After nevertheless electrode silk enters cut area of soft silk shake rate is older than hard silk, still get eclectic consideration so. 3, what online cut technology develops geometrical character is inchoate (arrived 1969 seventies metaphase) , did not do almost to electrode silk any research, those who use is the red copper silk on off-the-peg electric machinery and cable. Now day, efficient the geometry that the line cut machine of high accuracy asks electrode silk has error minimum is characteristic. The final process that electrode silk makes is to use many gem to pull filar model to get public errand of diameter of wonderful, silk is smooth, circularity + / - 0.

The finished product of 001mm. On the other hand, still silk of a few electrode is designed designedly however have relatively harsh face, can raise cut rate. 4, the hot physics character of silk of electrode of hot physics character is the key that improves cut efficiency. These character are carry alloy part deserve to compare or the choice of fundamental core material will decide. Melting point: The melting point of electrode silk is a main index. Because electrode silk carries the mechanical movement when seal wire chew, and rinse the element such as force and discharge, electrode silk is to have when cut those who shake. The dinky short circuit that this will cause countless times, make cut process is decelerated. When electrode silk works if be on external diameter can loss a few, it can prevent in the gap that faces cut direction or reduce short circuit effect so. At the same time it is carrying the space of pair of cut direction on the back to conduce to improvement rinsing action, can better purify treatment abandons bits. The loss of electrode silk external diameter won't affect treatment precision, be in because of new electrode silk ceaseless feed. This is one of two character that metallurgy home is in those who study electrode silk to rinse the material that the consideration wants when the gender. Threshold pressure for vaporization: The meeting when electric spark cut produces much quantity of heat, among them a few quantity of heat are absorbed by electrode silk, this meeting reduces cut efficiency. If loss of too much quantity of heat is on electrode silk, electrode silk is met because of overheat fusing. Because this needs electrode silk face can fast aerification, release heat energy to workpiece while electrode silk gets cooling. After material be heated reachs melting point, meet aerification, produce threshold pressure for vaporization. The stuff with low melting point is easier aerification. Another character that electrode silk place should have is low melting point and tall threshold pressure for vaporization, can help a waste residue blow from cut seam. This is another character that electrode silk rinses sexual good place to should be had. Be in in cut surface when electrode silk and workpiece is aerification is not fused when, of generation is gas is not fused metallic grain. This was improved again conversely rinse a process, the grain that because want,sweeps is little. 2, the sort of electrode silk and application are current, the electrode silk that can choose on the market can divide it is the following kinds: 1, silk of brass silk brass is silk of electrode of major of the generation in line cut domain. 1977, brass silk begins to enter the market. Silk of this kind of electrode ever brought the breakthrough on cut speed, it is the workpiece of 50mm to ply at that time, cut speed from 12mm2/ minute raise 25mm2/ minute. Be what makes speed broke up one times? It is the alloy of red copper and zinc brassily, the commonnest deserving to compare is the red copper of 65% and the zinc of 35% . Because melting point is inferior,discover the zinc in brass silk at that time (420 ℃ , and red copper is 1080 ℃ ) can improve rinse a gender. In cut process, zinc as a result of high temperature aerification makes on the treatment face that the temperature of electrode silk is reduced and conveys quantity of heat to workpiece. Theoretic tell, zincic scale has been jumped over higher, it is nevertheless in the production process of brass silk, after zincic scale exceeds 40% , the structure of α single-phase crystallization of electrode silk turned α and β into structure of double photograph crystallization. Material becomes too fragile and do not suit to pull it into the diameter at this moment very small filament. Brass silk can have different tensile strength to satisfy different equipment and applied circumstance. This is to pass a series of pull silk (quench action) with heat treatment (anneal) working procedure will come true. The tensile strength of common and brass silk is between 490-900N/mm2. The main drawback of brass silk: (1) machines speed to cannot rise: Because brass is medium zincic proportion is certain, the energy when discharging so changes efficiency to cannot rise further; With 0.

The rolled steel with thick 30-60mm of cut of 25mm brass silk is exemple, of a lot of users of domestic advocate cut speed to be in 120mm2/ or so minutes. (2) surface quality not beautiful: The treatment that the cupreous particle that the as a result of aerification of electrode silk surface layer belt when the cupreous pink of brass silk face and discharge gives can accumulate existence workpiece forms the surface to accumulate copper on the face. At the same time because rinse a gender bad and thicker degenerative layer arises in workpiece surface, these metropolises affect the exterior hardness of workpiece and surface roughness; (3) treatment precision is not tall: When processing deeper work especially, because rinse a gender undesirable, the linearity error with meeting bigger generation (carry on size error and bosomy form difference up and down) . In addition, as a result of the reason that the price competes, at present low brass silk of home is existing generally all sorts of quality problems, pledge because of capable person of adoption makings of cupreous material embryo for example undesirable and the reason on the equipment that pull silk and craft brings about pink of copper of brass silk face more, sectional geometry error is too big etc, these metropolises bring about discharge stability to drop, serious effect machines speed and quality. In the meantime, return the loss that can pollute equipment component to increase facility. The applied circumstance of brass silk: (1) treatment measures inadequacy, not be 24 hours of users that switch on the mobile phone. Because machine efficiency to these users not be main problem; (2) is right machine precision especially the user with exterior quality not high demand; (The user that 3) gives priority to with machining small size, thin ply. The proportion that because workpiece holds the time that clip adjusts,takes total handling time is higher, cut time is less, not apparent to machining the influence of efficiency. (The material hardness of 4) workpiece not tall or ply does not exceed 80-100mm. Although be mixed as the occurrence of the film electrode silk of all sorts of better performance,gain ground, the market share of brass silk shows the trend that drops ceaselessly, but, because its cost is low, and can satisfy common treatment requirement, because this still can continue,receive wide application. In the meantime, still appeared on the market a few have different level to improve on function and the price the new-style and brass silk under film electrode silk: (Does 1) exceed clean model brass silk: ? Does Piao cloud bilge does awl of pagoda tree of cook of Sou of  of Lang of  of Qiang of rice huller of collate of  of ɑ fall forward make fun of  ü  to criticize sb's faults frankly Shan bars Mian of ば Mou sex still does Tuo Lu that Qiu hang down does Sang Hu?2) exceed shoot a glance at of ひ behead  hard model brass silk: ? Bits of  of fall forward of ü  joke sinceres  of Kang Mu of  of enough fall forward of  of stand upright of  of throat of Lu  ⒘ firelights or sunlight especially?200N/mm2 of Kang sparrow Ji. This kind of silk exceeds in treatment thick or treatment precision and speed can be improved when exceeding hard work; (: of 3) high speed brass silk?  of Hang Kangmou soil of  of  fall forward oh?0% of Bi of Shan outskirt  , can improve rinse a gender, raise cut rate. But, its cut speed still compares galvanization electrode silk to want slow. 2, because film electrode silk is low the effect with the apparent to improving the discharge function of electrode silk to having zinc of melting point, and the scale of the zinc in brass is restricted again, so people thought of to add a zinc again outside brass silk, this produced galvanization electrode silk. This kind of method that a few engineers invented Switzerland 1979, make the development of electrode silk strode ahead one stride, brought about the occurrence of silk of electrode of more and new-style film. The main good point of film electrode silk: (1) cut rate is high, not easy fracture of wire. The rate of cut of galvanization electrode silk with good quality can compare fast 30-50% of high grade and brass silk, at present a lot of users use Guangdong zone 0.

The galvanization electrode silk of 25mm, cut speed is in on average 150-180mm2/ minute. (The exterior quality of 2) treatment workpiece is good, without accumulate copper, degenerative layer gets ameliorative, the hardness of workpiece surface is accordingly taller, the life of the mould is lengthened. (3) machines precision to rise, especially the appearance error of pointed horn place, linearity error of deep work all have improvement than brass silk. (The loss of the component such as chew of 4) seal wire is reduced. Zincic hardness is lower than brass, at the same time galvanization silk has white of a lot of copper in that way unlike brass silk, jam not easily so seal wire chew, pollute relevant component. Technology of production of film electrode silk basically has macerate, eletroplate and diffuse anneal these 3 kinds of methods. The core material of electrode silk basically has brass, red copper and steel. The material of film has alloy of zinc of zinc, red copper, copper and silver. At present the silk of relatively mature this kind of electrode on the market distinguishs by application basically have the following kinds: Silk of common galvanization electrode: As a result of macerate this kind of craft is compared relatively simple, so manufacturer of silk of a lot of electrode uses a future life of this kind of method to produce galvanization electrode silk. But silk is pulled again after galvanization, its biggest question is the uniformity of uncontrollable film, the property of electrode silk discharge that produces with this kind of craft so is not quite stable, rate does not rise than brass silk only 10% . The galvanization electrode silk with some poorer quality its color often is not even silver-colored gray, can see alternate with of a few buff among them, this is phenomenon of " of copper of alleged " dew. Silk of this kind of electrode although the price is cheaper, compare brass silk only a bit a few more expensive, but adoption person is not much. High accuracy treatment uses galvanization electrode silk: Silk of this kind of electrode is to use eletroplating method more, so can the better ply that controls galvanization layer, discharge performance is steady, not easy fracture of wire, suit the accurate treatment of cut above 4 times. Cut speed can compare brass silk commonly fast 30% the left and right sides. The section plane of silk of this kind of electrode sees. Common brand has the COBRACUTA of German Berkenhoff company, MEGACUTA, the STAMMCUTZC900 of German HeinrichStamm company and ZC950 are waited a moment. The silk of electrode of ZINCO series galvanization of Korea OPEC company, although also be adoption macerate technology, but its technique extraordinary, the invention that applied for the United States, Japan, Europe and China is patent. The characteristic of this craft is help brass core capable person first film has when making adjacent and final diameter, pull silk again next. Its film by multilayer composition of cupreous zinc alloy, zincic scale from in gradient gradual change is shown outside arriving, it is with outer zinc most, and the surface is the microcosmic and poriferous structure that is helpful for improvement rinsing function. Silk of this kind of electrode already was Sodick of manufacturer of line cut aircraft and Agie-Charmilles place to use. Also be home's at present best-selling galvanization electrode silk at the same time. Begin Korea to manufacturer of silk of a few electrode also uses eletroplating method to produce galvanization electrode silk in the attempt this year, if can form batch to enter the market, believe to be able to bring more material benefit to domestic user. High rate treatment uses film electrode silk silk of this kind of electrode with diffusing anneal craft is made, it is silk of a kind of compound electrode, have the deeper film that contains the zinc of 50% and the red copper of 50% . This kind of film needs to pass a series of heat treatment process, its color diffuses because of film and from bright argent turn into cinnamon. The core of silk of this kind of electrode is α structure and film is β structure, it machines a super-cooling to press through a drawing finally in pressing film into core material. Has diffused electrode silk face is poriferous, it conduces to improvement rinsing a gender. The cut speed of silk of this kind of electrode is current the fastest. Common brand has COBRACUTD, BRONCOCUTX, MEGACUTD, SWX, STAMMCUTXi to wait. The HUNT-X electrode silk that Korea OPEC company develops in the light of the line cut machine of Charmilles, although not be to use,diffuse anneal craft, but silk of its cut function and this kind of electrode is very similar, also belong to silk of high speed electrode, can use at having the treatment of higher demand to speed. Treatment uses tall difficulty silk of electrode of core of steel of film electrode silk is a kind of compound silk. It adds the red copper film among and the brass film composition outside by the core of steeliness. The tensile strength that steel core issues in normal temperature and brass silk are about the same, but reduce quickly as the tensile strength of the elevatory and brass silk of temperature, and the tensile strength of steel criterion silk of prep above brass. But, because the electric performance of harbor is bad, because this wrapped in order to of a red copper outside steel core,raise electrical conductivity. And the effect that the brass layer outside had improvement to rinse function. Taller to difficulty line cut is machined, although use thicker diameter (0.

30mm) electrode silk, or use galvanization electrode silk to be able to make the circumstance is improved somewhat, but want to achieve higher treatment demand, first-rate choice is silk of electrode of core of this kind of steel. 1, tall ply treatment: Generally speaking, when the work that should process is deeper (exceed 100mm above normally) , treatment speed is reduced apparently, and process the linearity error of the face meet very big. Use treatment of steel core silk right now, can improve speed and precision apparently. 2, strong water is undesirable the treatment of condition: For example ply of big rake treatment, workpiece is irregular, the treatment with bigger span and the treatment that many workpiece overlay rise are waited a moment. Strong water is undesirable and easy cause fracture of wire, treatment rate falls consequently. In the meantime, also can bring about discharge 2 times to increase, affect exterior quality. 3, workpiece material machines hard: For example the material of the more difficult cut such as black lead, copper, aluminium alloy. Common brand has: The silk of electrode of COMPEED steel core of Japanese FUJIKURA company. The diameter that superprecision uses silk of electrode silk brass or film silk is in commonly 0.

30mm comes 0.

Between 07mm. And the tiny part to a few electrons, optics and horological industry or the treatment that exceed nicety, the diameter of requirement electrode silk is in 0.

10mm comes 0.

03mm. This was planted in the past electrode silk is to use tungsten filament or molybdenum silk to make, the price is very high. The steel wire that uses high tensile strength generally now (line of 100 carbon piano) outside the brass that add plating will make, common calls " piano line " . The tensile strength of silk of this kind of electrode is 2 times of general electrode silk, be as high as 2000N/mm2 above. Common brand has German MICROCUT, japanese SPWire. 3, the electrode silk that how the consideration differs is right the influence 　 " of finished cost is about to be versed in its effect, first benefit its implement " . What the new facility that emerges in endlessly in manufacturing industry, new tool and new material bring is better treatment the effect and taller treatment efficiency, also mean better economic benefits at the same time. Inside the industry most the company that those hep technologies develop tendency and always uses an advanced technique of benefit above all first. This to line cut also be just the same. The pursuit of the ceaseless development as line cut technology and people to efficiency and quality, new high-powered electrode silk replaces brass silk necessarily and become the protagonist of the market. Active adoption is efficient electrode silk will be right the influence of the financial forms for reporting statistics of user of line cut machine or profundity of competitive ability generation. We study from the following respect factory of one come off work machines the relation of the current situation and finished cost: 1, the need that whether the factory has the process capability of equipment to satisfy business to grow? Whether does equipment move 24 hours? Whether to need regular outside hair treatment? Whether to prepare to acquire new facility? If be below the case that uses brass silk, equipment although 24 hours of carry also cannot satisfy treatment requirement all right, and treatment of the hair outside must leaning will make up for, also add more equipment in the consideration at the same time, so such factory can try to change above all use the electrode silk with taller efficiency, perhaps can alleviate instantly the treatment of extremely urgent is inconsistent and need not devoted and too much capital. In facility amount changeless circumstance falls, the hair outside decreasing machines a quantity to still can bring immediate benefit. 2, what level is the man-hour cost rate that factory line cut machines in inside course of study of person of the same trade? This reflects the competitive ability that gives a plant directly. Because cost leads man-hour to often get an industry of average level restrict, same fee leads a level to fall, of profit more or less to depend on of factory utmost increase manufacturing efficiency and the capacity that reduce cost. 3, is the factory satisfactory to present treatment quality? If long-term since it is use brass electrode silk and machine quality to often appear problem, need do poorly done work over again, cause delay delivery, bring about the client's dissatisfaction, so change other electrode silk to you can improve treatment precision and exterior quality? Qualitative to different workpiece capable person, had considered to choose different electrode silk and the treatment effect with get having better? This can affect the finished cost of the factory and beneficial result likewise. Below, we calculate through machining example the electrode silk influence to finished cost: Test type: SODICKAQ325L (left factory 2000) 　 checks work: Material SKH-9 steel, ply 60mm, cut length 29.

99mm 　 checks result contrast: Plate of mill of silk of electrode of specification of silk of electrode of galvanization of project brass silk some is homebred diameter of silk of electrode of 　 of hard silk ZINCO (Mm) 0.

200.

Frequency of 20 　 cut 33 cut 1 repair on size error of precision of 2 　 dimension: 6 micron on size error: Precision of 1 micron treatment raises linearity error apparently error of appearance of place of 2 micron pointed horn sees 4 micron apparently when appearance error has clear improvement to use galvanization silk cut, need not compensate, horny ministry error reduces exterior quality apparently (intuitionistic) have accumulate copper to have raise cut ply apparently (Mm) length of 6060 　 cut (Mm) 29.

9929.

Area of 99 　 cut (Mm2) 1799.

41799.

4 　 handling time (minute) 39.

527.

3 fast 31% 　 machine speed (Mm2/ minute) 45.

665.

9 cut 1 repair the 　 of 　 of 　 of 　 of average treatment speed of 2 economic benefits computation: Silk of electrode of galvanization of brass electrode silk takes filar rate (rice / minute) length of silk of 13 　 bad news (rice / hour) reduction coefficient of length of 13x60=780 　 weight (gram / rice) 0.

27 (it is to the diameter 0.

The electrode silk of 20mm) silk of 　 hourly cost is measured (kilogram) 780x0.

27/1000=0.

211 　 discharge actually every months time (hour) hour of 30 days of X16 / silk of every months of bad news measures day =480 hour (kilogram) 0.

211x480=101.

28 　 are monovalent (yuan / kilogram) 30.

0098.

00 　 charge of silk of every months of electrode (yuan) 101.

28x30=3038.

40101.

28x98=9925.

After 44 　 use galvanization silk raise cost every months (yuan) 9925.

44-3038.

40=6887.

The rate that " of 04 yuan of 　 cuts 1 long 2" (Mm2/ minute) 45.

665.

9 　 can machine an area every months (Mm2) 45.

6x48060=131328065.

" of 9x48060=1897920 　 　 cuts the 1 treatment that repair 2" to expend rate ￥ 0.

Every months every machine machines 045/mm2 　 income 1313280x0.

045=59, 097.

601897920x0.

045=85406.

After 40 　 deduct the cost that electrode silk raises, the income that every months every machine increases (yuan) 85406.

40-59097.

60-6887.

04=19421.

33% 　 show 76 yuan of amplitude 　 1, the 2/3 that above computation assumed discharge time takes handling time, and the part of treatment is roughly same, cut with " repair 2 " to give priority to. 2, the user can undertake calculating according to respective circumstance, although each are not identical as a result, but according to we and Guangdong area the communication of a few users is informed, measure enough user to treatment, income has for certain increase. Pass afore-mentioned example to be able to know, although check uses galvanization electrode silk to compare brass silk unit price 2 times more expensive, but because machined efficiency to rise 31% , machining benefit is to increase completely in fact, after reason uses galvanization electrode silk, direct economic benefits is apparent. The place on put together is narrated, cheap brass silk is not actually most economic choice, the high-powered electrode silk that designs through the innovation and contemporary and advanced line cut aircraft cooperate to be able to achieve the manufacturing efficiency with the brass taller silk that compares a level, more superior gender value is compared. So, different treatment, use different electrode silk please. CNC Milling