Welding Performance Concept ah hian Metal Materials tih a awm a.
Metal materials weldability tih hian metal materials ten welding methods, welding materials, welding specifications, leh welding structure form te pawh huamin, condition thenkhat hnuaiah welded joint tha tak tak an hmuh theih dan a kawk a ni. Metal pakhatin weld tha tak a hmuh theih chuan ordinary and simple operation hmangin . Welding Machine Process , he metal hian welding performance tha tak a nei niin an ngai. Metal materials weldability hian a tlangpuiin aspect pahnih a huam a, chungte chu process weldability leh use weldability te an ni.
Process Weldability: Welding process condition thenkhat hnuaia weld tha tak tak, defect nei lo hmuh theihna a kawk a ni. Mahse, metal-a thil neih (inherent property) a ni lo va, welding method bik leh process measures bik hman atanga qualification a ni zawk. Chuvangin, metal materials process weldability chu welding process nen a inzawm tlat a ni.
Use Weldability: Welded joint emaw structure pumpui emaw hian product technical conditions-a tarlan use performance a tlin theihna degree a kawk a ni. Service performance chu welded structure hnathawh dan leh design-a technical requirements dah a nih dan azirin a innghat a, a tlangpuiin mechanical property, low temperature toughness, brittle fracture resistance, high temperature creep, fatigue performance, endurance strength, corrosion resistance leh wear resistance, etc. te a huam a ni. Entirnan, S30403 hman tlanglawn tak, S31603 stainless steel hi tuipui kama leh hmun dangah te hman theih a ni a, corrosion resistance tha tak a nei bawk. 16MNDR, 09mnnidr Temperature hniam steel hian low temperature toughness property tha tak a nei bawk.
Metal materials te welding performance-a thil pawimawh tak tak (influencing factors) te .
Material factors 1.1.
Material-ah hian base material leh welding materials te a tel a ni. Chutiang bawkin welding conditions ang bawkin, base metal weldability tichiangtu ber chu a physical property leh chemical composition a ni.
Physical property te chu melting point, thermal conductivity, linear expansion coefficient, density, heat capacity leh metal a factor dangte a ni a, chung zawng zawng chuan thermal cycling, melting, crystallization, phase change leh process dangteah nghawng a nei vek a, chu chuan weldability a nghawng a ni. Thermal conductivity hniam tak, stainless steel ang chi te hian welding laiin temperature gradient lian tak an nei a, residual stress sang tak leh deformation lian tak an nei bawk. Chubakah, temperature sang taka awm hun rei tak a awm avangin heat-affected zone grains te chu a lo thang lian a, hei hian joint performance a tichhe nasa hle. Austenitic stainless steel hian linear expansion coefficient lian tak a nei a, joint a deformation leh stress pawh a na zawk.
Chemical composition lam hawi chuan carbon hi chemical property-a nghawng lian ber nei element a ni a, chu chu a thil siam carbon awm zat hian a weldability a tichiang tihna a ni. Steel-a alloying element dang tam zawk pawh hi welding atan a tha lo a, mahse an degree of influence hi a tlangpuiin carbon aiin a tlem zawk hle. Steel-a carbon awm zat a san chuan hardening tendency a sang chho zel a, chutih laiin plasticity a tlahniam a, welding crack a awm awlsam bawk. A tlangpuiin, welding lai hian metal materials te chu crack-ah an sensitivity a, welded joint area-a mechanical property inthlak danglamna chu weldability of materials endikna atana hmanraw pawimawh ber atan an hmang a ni. Chuvangin, carbon a tam poh leh weldability a chhe zawk thin. Carbon hniam steel leh low-alloy steel carbon content 0.25% aia tlem nei te hian plasticity leh impact toughness tha tak an nei a, welding hnua welded joint te plasticity leh impact toughness pawh a tha hle bawk. Welding lai hian preheating leh post-welding heat treatment a ngai lo a, welding process pawh control a awlsam avangin weldability tha tak a nei bawk.
Chu bakah, smelting leh rolling state, heat treatment state, leh structure state of steel te hian weldability chu degree hrang hrangah a nghawng thei vek a ni. Refining, refining emaw grain refinement leh controlled rolling technology hmanga steel weldability tihchangtlun. Strip steel chu pipe-ah weld a nih hnuah online bright solution hmanga enkawlna direct-a pek theih a ni bawk. hangao tech (Seko Machinery) tih a ni a. Induction heating bright annealing furnace heat treating machine hian intergranular stress a ti tha thei a, a khauhzia a ti tlem thei bawk.
Welding materials hian direct-in welding process-a chemical metallurgical reaction hrang hrangah direct-in an tel a, chu chuan weld metal-a composition, structure, performance leh defect formation a tichiang a ni. Welding material chu dik lo taka thlan a nih a, base material nena inmil lo a nih chuan, hmanna atana thil tulte zawmtu joint chauh ni lovin, a structure leh a performance-a crack leh inthlak danglamna ang chi defects siam chhuah a ni ang. Chuvangin, welding materials thlan dik chu welded joint quality sang tak neih theihna tura thil pawimawh tak a ni.
