1
?/p>
HIC
碳钢的要求:
THE REQUIREMENT FOR HIC RESISTANT CARBON STEEL;
?/p>
1
)应符合
NACE MR 0103
的规定?/p>
SHALL CONFORM TO NACE MR 0103.
?/p>
2
)必须是硅镇静钢?/p>
SHALL BE SI KILLED STEEL.
?/p>
3
)屈服强度(
Σ
S
)小?/p>
345MPA;YIELD STRENGTH IS LIMITED TO 345MPA MAX;
?/p>
4
)碳当量?/p>
CE<0.42%,CE=C+MN/6+(CR+MO+V)/5+(NI+CU)/15;
EQUIVALENT: CE<0.42%,CE=C+MN/6+(CR+MO+V)/5+(NI+CU)/15;
?/p>
5
?/p>
S
?/p>
0.02%(WT), P
?/p>
0.03%(WT);
?/p>
6
)应以正火组织状态交货,焊后应进行消除应力热处理?/p>
SHALL BE NORMALIZED AND PWHT IS REQUIRED
FOR STRESS RELIEF.
?/p>
7
)母材焊缝及其热影响区的硬度不超?/p>
200HB
,且焊缝及其热影响区的硬度不超过母材?/p>
120
%;
HARDNESS FOR WELDS AND HEAT AFFECTED ZONE IS LIMITED TO 200HBN,AND NOT MORE THAN 120% HARDNESS
OF BASE MATERIAL.
?/p>
8
)母材和焊缝表面不得有深度大?/p>
0.5mm
的尖锐缺陷存在?/p>
ANY
SHARP
DEFECT WITH A DEPTH
MORE THAN
0.5MM IS NOT ALLOWED IN THE SURFACE OF BASE MATERIAL AD WELD.