Base of knife of inversion bull MAG is automatic solder private plane

Summarizing industrial razor blade is of all kinds cut the main job with indispensable machine component and wear away, its semifinished product by body of mild steel knife (machine figuration with cutting formerly) two parts heat up forge to close and become with head of tool steel knife. Because fuel furnace high temperature heats,course material surface oxidized in the past serious, easy cause the forge between knife head and cutter hub to close undesirable. Convert after MAG solders method beforehand will advocate, deputy cutter hub and seam welding of union of edge of knife head material close, the reentry after forming airtight to join heats up forge all right, be abroad of a kind of study is high grade low cost is advanced technique. The one share that compares a key among them is to solder equipment and solder the choice of craft. 2.

Solder base of knife of new technology of method and craft uses complete combined-type to go all out outfit, advocate, deputy cutter hub (mild steel) with knife head (tool steel) show " article " word go all out close, outside its the surface forms 3 vertical welding line (distributing at going up, left, right 3) , two horizontal end panel have T look short welding line each, cutter hub of 1(seeing a picture uses two mild steel board go all out make OK and managing many steel products and treatment man-hour) . Semifinished product length about 1 ～ 1.

5m, width 0.

2 ～ 0.

3m, total ply makes an appointment with 50 ～ 60mm. Solder the requirement will distributing in edges of 5 apparently 7 flat-fell seam outside face seam (and face seam) is not united in wedlock inside requirement general, it is to finish join beforehand and form the airtight that combines an aspect to in-house T form, prevent to cause hot forge to close by high temperature oxidation undesirable. Accordingly, each welding line must interrelate add, cannot appear contact break or not fusion. User design finishs cross section with handiwork of semi-automatic MAG method first of 4 short welding line solder, welder makes generous 3 even if welding line uses 3 automatic MAG,solder becomes special welder, latter is the problem that the article basically describes. Solder contact does not open groove (advocate cutter hub often takes round horn) , only way welding line, do not swing welding torch. Choose stationary dragon mast to install 3 stack to reach orgnaization sending silk, welding wire dish, cooperate roller path type to deferent stage is worn and go up, next workpiece device, form special welder. Transmission electromotor uses timing control, speed of requirement solder wiring is in 0.

3 ～ 0.

8m/min limits is adjustable and stable. Choose φ 1.

The welding wire of mild steel of copper facing sincere of 2mm in order to get bigger frit deep. Normative choice basically considers to be mixed greatly in order to get bigger frit proper and sectional metal accumulation is a target. Basis " solder manual " , can consider solder voltaic limits is 220 ～ 250 A, because this chooses rated electric current,the MAG welder of 350 ～ 400A is appropriate. Protective gas uses CO2 or mix air (Ar+CO2) , by decision trying solder. 3.

Private plane of MAG automatic solder (the welder that 1) welder chooses a requirement to cooperate MAG automatic solder, should bring arc fast and reliable, receive arc to divide spherule automatically, output voltage is stable, send a stability, dependability is good, can work continuously, control repeatability is good and solder splatter small. In type of inversion of canal of brake of existing tap type, brilliant, IGBT in 3 kinds of welder, only latter can satisfy afore-mentioned requirements in the round most. Combinative system demand and engineering capability of this unit research and development, we choose NZC, welder of MAG/CO2 of 400IGBT fission type regards special form a complete set as welder (2) seeing a picture. This machines and tools has look of much broken line smooth external characteristic, distinctive electron reactor and send silk slow to bring type of arc, attenuation to receive arc to control a function except spherule, have use character admirably, suit to be applied below spray transfer condition particularly. Additional, use an effect to provide line of drive of electromotor of type of wave of high frequency behead, stronger to sending filar electromotor to offer character and answer ability quickly, make send silk smooth and strong. IGBT inverter advocate the design that loop uses course big batch to produce test and with makings plan, can move for long continuously, dependability is very good. (2) welding torch and solder the orgnaization spends silk of standard of stack, orgnaization sending silk, 25kg by welding torch of MAG of air cooling type and 3 axes freedom dish reach bracket to comprise MAG welder head. 3 nose are secured accordingly according to position of on 3 left, right, welding line go up in frame of dragon door type, pass the NZC with cable, control cable, tracheal respective and corresponding join respectively, 400IGBT welder. Welding wire doing is stretchy, walk to all can be adjusted welding line of horn, job actor, alignment neatly, use handiwork to adjust pattern. Private plane of 3 MAG automatic solder is shown 3 times like the graph. (3) drive and control orgnaization wait for solder workpiece to be done along with path of horizontal drive roller etc fast fore-and-aft shift, solder through MAG undertake soldering when frame, reentrance waits for check to be versed in. If have unqualified welding line, need to fill via artificial semi-automatic MAG solder, repair comes eligible. Transmission uses induction motor of 3 photographs asynchronous, deserve to undertake timing with transducer, but to / retrorse drive. Use a PLC to control a system to be opposite 3 NZC, the movement of 400IGBT welder and main transfer machinery undertakes associated controlling. Control means has those who cooperate positional sensor is full automatic successive means and hand accuse - semi-automatic work way, latter is debugged for equipment or use when small lot production. Control a system can collect group control, also can dominate the action of welder severally, solder in order to undertake or check, can spot welder movement trouble; But accept investment restriction, the person that cannot offer palpability - machine dialog. Solder electric arc voltage, solder electric current (speed sending silk) can part by every NZC, 400IGBT inversion welder is installed and adjust. 4.

Solder craft experiments (1)3 solder in the position, have place of position of a flat position welding, two horizontal position welding, adoption normative parameter is united by latter. Good according to welding line fusion, splatter small (advantageous to soldering automatically continuously) these two the mainest goals, to soldering speed of wiring of voltage of electric current, electric arc, solder, section solders a variety of elements such as composition of method, active gas undertook contrasting in great quantities experimenting, obtained more appropriate welder finally art of parameter and satisfaction solder quality. Be worth what carry to have among them prevent welding line craze and bring down to solder splatter measure two. (Because 2) is fore-and-aft welding line is longer, input total quantity of heat is bigger, workpiece be heated is inhomogenous bring about cut wind shear contrast, rudimental stress is greater. Normally the means of settlement has reduce solder warm-up of hot input, workpiece, section solders wait for a few kinds. Technical economy analysis and experiment make clear, it is better to still solder with section, can eliminate appearance of welding line craze. (3) place is chosen solder the standard belongs to critical limits, produce blame axial easily in CO2 atmosphere to mix transfer, splatter much and grain is bigger, cause nozzle easily to jam, and welding line exterior is poorer. For this, we change gas rich argon to mix air by CO2 (contain 85%Ar, CO2 surplus) hind, frit drop transfers incline to spray transfer, splatter the quantity is reduced apparently, the machine rate that welding torch nozzle is jammed falls greatly, case of welding line figuration is better. 5.

Epilogue covers equipment consign user to use originally close already 5 years, satisfied the requirement of serial production of product line of knife base new technology, obtained favorable result. Via using test for a long time, besides in suffocate suffocate of dynamoelectric pilot time (because electric mouth blocks silk up to cause) filar machine sends driving unit below overweighted condition have trouble occasionally (already made improve) outside, NZC of 3 IGBT inversion, 400 welder are overall the beautiful on expression, the system moves good. Production carries out a proof, this model welder and private plane of 3 MAG automatic solder were achieved really design and use a requirement. CNC Milling