Welding Class 2

Bila welding boleh terjadi?
Welding can happen when the faces of the material to be joined is in solid phase or in liquid phase.

Apa itu solid phase?
Soild phase ialah dalam keadaan pepejal. Dalam welding, solid phase yg dimaksudkan adalah dalam plastic condition.
Plastic condition adalah keaadan material dimana material itu sudah melepasi dia punya maximum tensile strentgh. Kalu korang ingat material tensile strength punyer graf, plastic condition adalah keadaan material yg kita tarik, dia takkan kembali ke saiz asal. Berbeza dengan elastic condition dimana kalau kita tarik/elongate, material itu akan kembali ke saiz asal.

Apa itu Solid Phase Welding Process?
Solid Phase welding process is a process of joining material without melting it either by heating, or by pressure or by using both. This is by bringing the material at the joint into plastic condition suitable for welding to occur. Boleh paham tak? Ala kiranya takdelah kita panaskan material itu sampai cair. Selagi dia tak cair kiranya solid phase punyer welding laa..

Contoh Solid Phase Welding.

1. Ultrasonic Welding
2. Friction Welding
3. Friction Stir Welding
4. Explosive Welding
5. Cold or Hot Roll Bonding
6. Blacksmith & Forged Welding
7. Diffusion Bonding

Kalau korang rajin, carilaa lagi reference kat internet, banyak lagi tu.. tapi kalau nak tanyer aku pun boleh..kalau nak wat kerja welding fabrication pun kontek laa aku. RF TEMS bleh buat punyer...