Gaasi Irin Arc Welding (GMAW): "Aṣayan Ti Ayanfẹ" fun Alurinmorin Didara to gaju

Alurinmorin irin gaasi (GMAW) nlo gaasi inert tabi gaasi ti nṣiṣe lọwọ bi alabọde aabo lati ya sọtọ ipa ti afẹfẹ lori adagun didà. O ẹya ga alurinmorin didara ati ki o lẹwa weld Ibiyi. O pin si awọn oriṣi akọkọ meji: tungsten inert gas alurinmorin (TIG) ati CO₂ gaasi idabobo alurinmorin (MIG/MAG), eyiti o dara fun awọn ohun elo oriṣiriṣi ati awọn oju iṣẹlẹ, lẹsẹsẹ.

1. Tungsten Inert Gas Welding (TIG Welding): The "Amoye" ni konge Welding

Alurinmorin TIG nlo gaasi argon (mimọ ≥99.99%) bi gaasi aabo. O heats awọn workpiece nipasẹ awọn aaki laarin tungsten elekiturodu ati awọn workpiece, ati ki o le wa ni ošišẹ ti pẹlu tabi laisi kikun waya (autogenous alurinmorin). O dara fun alurinmorin konge ti awọn ohun elo oxidized ni irọrun bii irin alagbara, irin aluminiomu, ati awọn ohun elo titanium, gẹgẹbi awọn paati afẹfẹ, awọn ohun elo titẹ, ati awọn ohun elo iṣoogun.

Awọn aaye Iṣiṣẹ pataki:

Aṣayan Electrode Tungsten: Lo awọn amọna tungsten ceriated fun alurinmorin irin alagbara, irin ati awọn amọna tungsten mimọ fun sisọ awọn alloy aluminiomu alurinmorin. Ṣatunṣe iwọn ila opin tungsten ni ibamu si lọwọlọwọ (fun apẹẹrẹ, 2.4mm tungsten elekiturodu fun lọwọlọwọ 100-150A). Ṣakoso ipari gigun ti tungsten elekiturodu ni 2-5mm lati yago fun olubasọrọ pẹlu okun waya kikun, eyiti o le fa sisun elekiturodu tungsten.

Iṣakoso Gaasi: Ṣatunṣe ṣiṣan argon ni ibamu si sisanra iṣẹ-ṣiṣe: 8-10L / min fun awọn awo tinrin (≤3mm) ati 12-15L / min fun awọn awo ti o nipọn (> 5mm). Fa akoko aabo argon pọ nipasẹ awọn aaya 3-5 nigbati o ba fopin si arc lati ṣe idiwọ ifoyina iwọn otutu giga ti weld.

5mm). Fa akoko aabo argon pọ nipasẹ awọn aaya 3-5 nigbati o ba fopin si arc lati ṣe idiwọ ifoyina iwọn otutu giga ti weld.

Filler Wire Technique: Fi okun waya kun lati iwaju adagun didà, yago fun olubasọrọ taara pẹlu arc. Ṣakoso iyara alurinmorin ni 5-10cm/min lati rii daju idapọ kikun ti adagun didà ati yago fun aini awọn abawọn idapọ.

2. CO₂ Gas Shielded Welding (MIG/MAG Welding): "Amoye ti o ga julọ" fun iṣelọpọ Mass

Alurinmorin gaasi CO₂ nlo CO₂ tabi gaasi adalu CO₂ ati argon bi alabọde aabo, pẹlu ifunni waya laifọwọyi. O ni ṣiṣe alurinmorin giga (awọn akoko 2-3 ti SMAW) ati idiyele kekere, ti o jẹ ki o dara fun iṣelọpọ pupọ ti irin-kekere erogba ati irin alloy kekere, gẹgẹbi awọn ara adaṣe, awọn apoti ohun elo ile, ati iṣelọpọ eiyan.

Awọn aaye Iṣiṣẹ pataki:

Ibamu paramita: Ni ibamu pẹlu lọwọlọwọ ati foliteji (fun apẹẹrẹ, 22-24V fun lọwọlọwọ 150A). Ṣakoso gigun gigun waya ni 10-15mm (iwọn akoko 5-10 iwọn ila opin okun waya); itẹsiwaju gigun ti o pọ julọ le fa itọpa ti o pọ ju, lakoko ti kukuru ti o pọ ju le sun nozzle naa.

Igun alurinmorin: Gba ọna alurinmorin apa osi (gbigbe tọṣi alurinmorin lati otun si osi). Ṣe itọju igun kan ti 15-25° laarin ògùṣọ alurinmorin ati ohun elo iṣẹ lati rii daju agbegbe kikun ti adagun didà nipasẹ gaasi. Lo apata afẹfẹ nigbati iyara afẹfẹ kọja 2m/s lati ṣe idiwọ gaasi aabo lati fẹ kuro, eyiti o le fa porosity.