不锈钢焊丝SLD-S304
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  • 不锈钢焊丝SLD-S304

不锈钢焊丝SLD-S304

Key words:

Product category:

SLD-S304

为奥氏体不锈钢焊接材料,焊接电弧稳定,成型美观,飞溅少,广泛用于石油化工、压力容器、食品机械、医疗器械等相关产业。

焊丝化学成分(例值):  

牌号

执行标准

化学成分例值(质量分数)%

C

Si

Mn

P

S

Cr

Ni

Mo

Cu

SLD-S304

协议

0.04

0.42

0.76

0.020

0.002

18.2

8.3

-

-

熔敷金属力学性能:

抗拉强度Rm(MPa)

伸长率A(%)

保护气体

540

38

98%Ar+2%O2

焊接工艺:

 

规格

平焊、横焊

立焊

仰焊

A

V

A

V

A

V

0.8

80-150

20-26

50-110

19-24

60-120

18-23

1.0

110-200

23-28

80-160

20-26

80-160

20-26

1.2

150-220

22-34

110-180

23-28

150-200

25-30

注意事项:

1、电源极性:  DC+

2、为保证焊丝的使用性能,焊接前应将工件表面的锈迹、油污、水份等清理干净。

3、焊丝干伸长度:15-25mm之间;气体流量20~25L/min之间。。

4、焊接时,当风速≥1.5m/s或高层施焊时,应采用挡风措施,更不能用风扇等直吹焊接处。

5、应随时清除导电嘴及导筒内的飞溅焊渣,特别是大电流焊接时,应随时保持导电嘴及导筒的清洁。

6、打开包装后,直接暴露在空气中的焊丝应避免与水、油漆、油污等接触,以免影响焊丝的使用。

7、焊丝直径应与导电嘴规格相一致,过大会造成导电不良,影响焊缝的成形,并且会使飞溅加大。

8、过大或过小的焊接线能量将严重影响焊缝的综合性能,应特别注意。

 

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