Welding defects i tawk tawh em, chu chu welding laiin splash lian tak tak, weld formation hmuhnawm lo, welding hnua pores tam tak a awm em?Laser welding process parameter settings buaina vang nge ni tih i la ngaihtuah lai hian welding shielding gas hman dik hi weld siam leh performance tichhe thei thil pawimawh tak a ni tih i hria em.Welding shielding gas tha ber thlan hian welding quality a ti tha tak zet a, The efficient way.
Welding shielding gas hi a pawimawh em em a, chuti a nih chuan: Shielding gas hian eng hna nge a thawh?Shielding gas chi hrang hrang engtin nge kan thlan ang?Welding lai hian engtin nge shielding gas hi a puak luh ang?A dawtah chuan Hangao Tech (SEKO Machinery) chuan mi zawng zawng chu zir belh zel turin a hruai ang.
Protective gas hnathawh dan
Laser welding-ah chuan shielding gas hian weld siam dan, weld quality, weld penetration depth leh penetration width te a nghawng dawn a ni.A tam zawkah chuan shielding gas puak hian weld-ah nghawng tha tak a nei ang a, mahse chhiatna a thlen thei bawk.Lo kal rawh unfavorable effect.
Positive effects a nei thei
1) Shielding gas puak dik chuan weld pool chu a humhim thei ang a, oxidation tihtlem emaw, pumpelh emaw pawh ni thei;
2) Shielding gas puak dik chuan welding process chhunga spatter lo chhuak chu nasa takin a tihtlem thei a;
3) Shielding gas puak dik chuan solidification laiin weld pool chu uniform spread a tipung thei a, chutiang chuan weld chu uniform leh mawi takin a siam thei a
4) Shielding gas puak dik chuan laser-a metal vapor plume emaw plasma cloud emaw shielding effect chu nasa takin a tihtlem thei a, laser effective utilization rate pawh a tisang 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 te dik taka thlan a nih chhung chuan duhthusam effect chu a awm thei a ni.
Mahse, shielding gas hman dik loh chuan welding-ah nghawng tha lo tak a nei bawk ang
1) Shielding gas puak dik loh chuan weld a ti chhe thei:
1Gas chi dik lo thlan hian weld-ah crack a siam thei a, weld-a mechanical property pawh a tlahniam thei bawk;
2Gas blowing flow rate dik lo thlan hian weld-ah oxidation nasa zawk a thlen thei (flow lian lutuk emaw, a tlem lutuk emaw pawh nise), chubakah weld pool metal chu pawn lam thiltihtheihnain nasa takin a tibuai a, weld chu a tlakbuak emaw, a lo piang emaw thei bawk inang lo takin;
3Gas blowing method dik lo thlan chuan welding seam chu protection effect a nei thei lo ang emaw, basically pawhin protection effect a nei lo ang emaw, welding seam siamnaah nghawng tha lo a nei ang
2) Shielding gas-a puak hian weld penetration-ah nghawng engemaw chen a nei ang a, a bik takin plate te tak te weld hian weld penetration a tihtlem phah ang.
Protective gas chi hrang hrang
Laser welding atana shielding gas hman tlanglawn ber berte chu N2, Ar, He te an ni a, an physical leh chemical property pawh a inang lo va, chuvangin weld-a an nghawng pawh a inang lo.
Nitrogen N2 a ni
A man hi a tlawm ber a, mahse stainless steel thenkhat welding atan chuan a tha lo hle.N2 ionization energy hi a moderate a, Ar aiin a sang zawk a, He aiin a hniam zawk bawk.Laser hnathawh hnuaiah hian ionization degree chu average a ni a, hei hian plasma cloud siamna a ti tlem thei a, laser effective utilization rate a tisang thei bawk.Nitrogen hian aluminum alloy leh carbon steel te nen temperature engemaw zat ah chemical react in nitrides a siam thei a, chu chuan weld brittleness a tipung ang a, toughness a ti tlem ang a, weld joint mechanical property ah nghawng tha lo a nei nasa zawk ang.Chuvangin nitrogen hman a tha lo.Aluminium alloy leh carbon steel weld te hi 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 tihchangtlunna kawngah a pui dawn a ni.Chuvangin stainless steel weld-naah nitrogen hi shielding gas atan hman theih a ni.
Argon Argon chuan a rawn ti a
A man a tlawm zawk a, density a sang zawk a, a protection effect pawh a tha zawk.Weldment chunglam hi helium gas aiin a hrual zawk a, mahse temperature sang takah metal plasma ionization a nei awlsam hle.Thuk takin a tikhawlo.Ar ionization energy hi a hniam hle a, laser hnathawh hnuaiah ionization degree a sang a, hei hian plasma cloud siam dan control nan a tha lo a, laser hman tangkai danah nghawng engemaw chen a nei dawn a ni.Mahse, Ar activity hi a hniam hle a, common metal nena chemical hmanga inzawmna siam a harsa hle.Ar man a to lo.Tin, Ar density a sang zawk a, hei hi weld pool chunglam thlenga pil a hlawkthlak a, weld pool chu a humhim tha zawk thei a, chuvangin conventional shielding gas atan hman theih a ni.
Helium Helium a ni
A man a to zawk a, mahse a effect erawh a tha ber a, chuvang chuan laser chu direct-in a kal thei a, workpiece chunglam chu block lovin a thleng thei a ni.He-a ionization energy hi a sang ber a, ionization degree pawh a hniam hle a, laser action hnuaiah chuan plasma cloud siam dan chu a control tha hle.Laser hian metal-ah hna a thawk tha hle a, He activity pawh a hniam hle a, a bul berah chuan metal nen chemically react a nei lo.Seam weld nan shielding gas tha tak a ni a, mahse He man hi a to lutuk.A tlangpuiin mass production products hian he gas hi a hmang dawn lo.A tlangpuiin scientific research emaw, added value sang tak nei product emaw atan an hmang tlangpui.
Hangao Tech (SEKO Machinery) hian kum 20 chuang zet a lo thawk tawh a... stainless steel industrial pipe siamna line tube siamna machine siamna industry.R&D team puitling leh assembly technician te chuan an thawn chhuah hmain production line tinah debugging leh repeated verification kimchang tak an nei ang a, chutiang chuan hmanrua te chu a tam thei ang ber hman theih a ni ang.Efficiency tihtlem la, customer te tan a hnua install leh debugging harsatna tihziaawm.
