The solder that break arc solders to apply mediumly in conduit
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source:DDON CNC Machining
Solder craft is ceaseless as the development of current science and technology rise, in conduit medical core welding wire is protected the occurrence of semi-automatic solder and development are manual to the tradition arc welding oneself in soldering technical revolution. As project of Sudan project, acerbity Ning Lan, Lan Chengyu project, enrage on the west east be defeated by the construction that waits for domestic and international major project, semi-automatic solder with its speed fast, operation goes to the lavatory, percent of pass is tall, shape capability of beautiful, acclimatization is strong the manual arc welding that waited for a lot of advantage to replace a tradition gradually, into be defeated by pipeline construction to solder to grow the mainstream of craft. Semi-automatic solder is a kind of advanced welder art, but for the solderer to experience of a few lack, because regular meeting controls bad bath temperature and produce all sorts of weld defects. One kind introduces to be able to control bath temperature effectively below solder method -- the solder that break arc. One, the of weld defects that semi-automatic solder often appears 1. Flat position welding of pipeline link welding line, admire solder two department position often is when undertaking heating up solder, pass as a result of bath temperature tall, solder path frit is deep increase, and because suffer gravitational effect, iron underwater drips, cause solder path to burn wear or a solder is formed in the position that admire solder inside sunken. 2. After root solder path clears through burnish, existing Bao Hou not all circumstance. As a result of temperature of semi-automatic solder bath tall, frit is deep big, in root solder if weaker position still uses groovy method to undertake soldering, fuse root solder metal extremely likely entirely and appear burn wear a phenomenon. 3. Solder niche is admired in the solder that cover a range, pass when bath temperature tall, because the molten iron when soldering is self-prossessed easy straining is drippy, control bath appearance and bulk not easily, cause solder road surface to shape thereby too freeboard, narrow, bite the blemish such as the flesh. 2, the fundamental of the solder that break arc and solder methodological 1. Fundamental: Although afore-mentioned occurrence weld defects each different, but the account that produces all sorts of limitation has a collective place however: Bath temperature is exorbitant. What because this breaks the fundamental of arc solder to depend on becoming,arc means uses to make bath brief when temperature of the bath in soldering is exorbitant is cooling, continue to solder again next, it is bath temperature control thereby inside relatively likely range. 2. Solder method: According to normal motion the arc since angle, after forming bath, also carry by convention a methodological carry, break arc instantly next (one pace breaks a law) or arc is broken after forming wave of a few solder ahead (a few paces break a law) , the bath after breaking arc cools a bit remove arc quickly, form next bath, break arc again, remove arc... undertake repeatedly so. (when soldering specific use " one pace is broken " or " a few paces are broken " should according to bath temperature logical choice) 3, the application of the solder that break arc and of operation essentials 1. Root solder burnish is reached in the flat position welding, position that admire solder when pipeline link welding line when smaller part undertakes heating up solder, discover bath temperature is exorbitant (bath increases) can use arc solder to undertake soldering till leave dangerous area,interim. Can avoid effectively to burn so wear reach inside the happening of sunken phenomenon. 2. When undertaking solder admires solder position to solder covering a range, after arc forms bath since, rapid and transverse swing to form molten iron lay open a state, make metal and fusion of capable person of mother of two side groove good, break arc next, case arc, break arc... the solder covering a range that till finish,admires solder niche. Use arc solder, can make build exterior of the position that admire solder to shape flowing, size is consistent, also avoided to bite the generation of fleshy phenomenon at the same time. 3. Break the operation essentials of arc solder: Break arc is extremely as brief as time interval removing arc (do not exceed １ second) , because of this movement must rapid, if bath cooling time is too long (bath shows wine) , recrudesce arc, solder way produces slag inclusion extremely likely. Additional, span of two solder wave passes not easily big, want to make photograph of two solder wave folds photograph adjacent, form close scale state, can make solder wave is out of line otherwise, the exterior shapes not quite beautiful. 4, the improvement of method of the solder that break arc although learn easily simply, breaks arc solder and the generation that can avoid a variety of flaw, but because its are intermittent,solder, solder speed is relative slower. Solder to rise speed, be necessary to solder in the solder that break arc the fundamental that the basis on technical foundation breaks arc solder (the bath with brief and cooling exorbitant temperature, temperature of effective control bath) undertake improvement to breaking arc solder: When bath temperature is exorbitant, welding rod rapid and fore-and-aft to not solder direction (inside groove, do not place groove injury and mother capable person) place (ceaseless arc) , place quickly next continue to solder normally, the goal that achieved cooling bath namely so makes solder again successive, assured to solder already quality, rose to solder again speed. Growing be defeated by conduit semi-automatic in soldering, if can master afore-mentioned soldering adroitly the method is reasonable try to apply, can reach control bath temperature, assure to solder the purpose of quality. CNC Milling