|
[China]
Trade Verify
Address: No.208,Lvdi Road,Baihe Town,Qingpu District,Shanghai,China
Contact name:
TOBO STEEL GROUP CHINA |
|
Verified Suppliers
|
|
|
304 Stainless Steel Elbow Stainless Steel Elbow 90 Degrees Chemical Industry Elbow Long Radius Seamless Butt Welding
Stainless steel elbow
1, electrode should be kept dry when used, titanium calcium type
should be dried by 150℃ for 1 hour, low hydrogen type should be
dried by 200-250℃ for 1 hour (not repeated drying, otherwise the
skin is easy to crack and peel off), to prevent electrode skin
sticking oil and other dirt, so as not to increase the carbon
content of the weld and affect the quality of welding parts. During
welding, carbide is precipitated by repeated heating, which reduces
corrosion resistance and mechanical properties. After welding, it
is easy to crack. If using the same type of electrode welding, must
be more than 300℃ preheating and after welding about 700℃ slow
cooling treatment. If the welding parts can not be post-welding
heat treatment, should be used chrome nickel stainless steel
electrode.
2, in order to improve the corrosion resistance and weldability of
stainless steel elbow and increase the stability of elements Ti,
Nb, Mo, welding is better, the use of the same type of chromium
stainless steel electrode, should be more than 200℃ preheating and
welding about 800℃ after tempering. If the weldment can not be heat
treated, chromium nickel stainless steel electrode should be used.
