Welding defects, welding laiin splashes lian tak tak, unsightly weld formation, leh welding hnua pores tam tak i tawk tawh em? Laser welding process parameter settings harsatna avanga a nih leh nih loh i la ngaihtuah lai hian welding shielding gas hman dik hi weld formation leh performance tichhe thei thil pawimawh tak a ni tih i hria em? Welding shielding gas tha ber thlan hian a takin welding quality leh efficient way a ti tha zawk.
Welding shielding gas hi a pawimawh em avangin: shielding gas hian eng hna nge a thawh? Engtin nge shielding gas chi hi kan thlan ang? Welding lai hian shielding gas chu engtin nge a puak ang? A dawtah chuan Hangao Tech (Seko machinery) chuan mi zawng zawng chu zir belh turin a hruai ang.
Protective Gas-a chanvo .
Laser welding-ah chuan shielding gas hian weld formation, weld quality, weld penetration depth leh penetration width te a nghawng dawn a ni. A tam zawkah chuan blowing shielding gas hian weld-ah nghawng tha tak a nei ang a, mahse chhiatna a thlen thei bawk. Lo kal rawh, effect tha lo tak a ni.
Positive effects .
1) Shielding gas puak dik tak chuan weld pool chu a tha zawngin a venghim ang a, chu chuan oxidation a tihtlem emaw, a veng thei lo emaw bawk ang;
2) Shielding gas blowing dik tak chuan welding process chhunga spatter siam chhuah chu a ti tlem thei a;
3) Shielding gas blowing dik tak chuan solidification laiin weld pool uniform spread a tichak thei a, chutiang chuan weld chu uniform leh mawi takin a siam thei a
4) Shielding gas blowing dik tak chuan laser-a metal vapor plume emaw plasma cloud emaw shielding effect chu a ti tlem thei a, laser hmanna rate effective tak a tipung thei bawk
5) Shielding gas puak dik chuan welding seam porosity chu a ti tlem thei hle.
Gas chi, gas flow rate, leh blowing method dik taka thlan a nih chhung chuan duhthusam effect chu a hmu thei a ni.
Mahse, shielding gas hman dik loh hian welding-ah pawh nghawng tha lo tak a nei dawn bawk a ni .
1) Shielding gas blow dik loh hian weld a ti chhe thei:
1 Gas chi dik lo thlan hian weld-ah crack a thlen thei a, weld-a mechanical property pawh a tlahniam thei bawk;
4Cas blowing flow rate dik lo thlan hian weld-a oxidation na zawk a thlen thei a (a luang chu a lian lutuk emaw, a tlem lutuk emaw pawh ni se), weld pool metal chu pawn lam thiltihtheihnain nasa takin a tibuai thei a, weld chu a tlakbuak emaw, a siam dan pawh a inang lo emaw a ni thei bawk
3Gas blowing method dik lo thlan chuan welding seam chuan protection effect a nei thei lo emaw, a bul berah chuan protection effect a nei lo emaw, welding seam formation-ah nghawng tha lo a nei ang
2) Shielding gas-a blowing hian weld penetration-ah nghawng engemaw tak a nei ang a, a bik takin plate te tak te weld-naah chuan weld penetration a ti tlem ang.
Protective Gas chi hrang hrang .
Laser welding atana shielding gas hman tlanglawn ber berte chu N2, AR, HE, leh an taksa leh chemical property te hi a inang lo a, chuvangin weld-a an nghawng pawh a danglam hle.
nitrogen N2 a ni a.
A man hi a man tlawm ber a, mahse stainless steel thenkhat weld nan a tha lo. N2-a ionization energy chu a hniam lam a ni a, AR aiin a sang zawk a, HE aiin a hniam zawk bawk. Laser hnathawh hnuaiah chuan ionization degree chu average a ni a, chu chuan plasma cloud siam a ti tlem thei a, laser-a effective utilization rate a tisang thei bawk. Nitrogen hian aluminum alloy leh carbon steel te chu temperature engemaw chen ah chemical hmangin an inrem thei a, chu chuan nitrides a siam thei a, chu chuan weld brittleness a tipung ang a, toughness a ti tlem ang a, weld joint mechanical property ah adverse effect nasa zawk a nei ang. Chuvangin, nitrogen hman hi a tha lo. Aluminum alloy leh carbon steel weld te chu venhim a ni.
Nitrogen leh stainless steel inkara chemical reaction atanga nitride lo chhuak hian weld joint chakna a tipung thei a, hei hian weld mechanical property a ti tha thei ang. Chuvangin, nitrogen hi stainless steel weld-naah shielding gas atan hman theih a ni.
Argon AR a ni a.
A man a tlawm zawk a, density a sang zawk a, protection effect pawh a tha zawk bawk. Weldment chunglam hi helium gas aiin a smooth zawk a, mahse high-temperature metal plasma ionization a awlsam zawk thung. thûk takin a tibuaitu a ni. AR-a ionization energy chu a hniam hle a, ionization degree chu laser hnathawh hnuaiah a sang hle a, hei hi plasma cloud siamna control-na atana ṭha lo a ni a, laser hman tangkai danah pawh nghawng engemaw tak a nei ang. Mahse, AR hnathawh hi a hniam hle a, common metals nena chemical hmanga inzawm a harsa hle. AR man hi a sang lo hle. Chu bakah, AR density a sang zawk a, hei hi weld pool chung lama sink tan a hlawk a, weld pool pawh a venghim tha zawk a, chuvangin conventional shielding gas atan pawh hman theih a ni.
helium a ni a.
A man a to zawk a, mahse a effect chu a tha ber a, chutiang chuan laser chu direct-in a kal thei a, workpiece chunglam chu block lovin a thleng thei a ni. He ionization energy hi a sang ber a, ionization degree hi laser hnathawh hnuaiah a hniam hle a, hei hian plasma cloud siam dan a control tha hle. Laser hian metal-ah hna a thawk thei hle a, a activity pawh a hniam hle a, a bul berah chuan metal nen chemical-in a inrem lo. Welding seams tan chuan shielding gas tha tak a ni a, mahse a man a to lutuk. A tlangpuiin mass production products hian he gas hi an hmang dawn lo. A tlangpuiin scientific research emaw, added value sang tak nei product emaw atan an hmang thin.
Hangao Tech (Seko Machinery) hian kum 20 chuang zet chu 2018-ah hian tawnhriat a nei tawh a ni. Stainless Steel Industrial Pipe siamna Line Tube siamna hmanrua siamtu industry. R&D team puitling leh assembly technician-te chuan an thil thawn chhuah hmain production line tinah debugging leh repeated verification an nei vek ang a, chutiang chuan hmanrua te chu a tam thei ang bera hman theih a ni ang. Efficiency tihtlem la, a hnu lama install leh debugging harsatna chu customer te tan tihtlem rawh.
