| Summary: | In manufacturing sector was found much component needed effective and
efficient of welding method. So that welding process had to with lower cost for
carry out joined some materials, such as joined shaft with shaft. Then welding
process which could apply was friction welding. Therefore it was needed the
research to joint the solid ST60. From material welded could find mechanical and
physic properties after pass through several testing.
Material ST60 was used in research. This material was joined used lathe
machine, the spindle must rotation 1100 rpm in velocity up to the material surface
become friction and joined. The specimen was through test for metallographic,
hardness test and tensile test. The metallography test was done recognize the
microstructure and the hardness test was conducted to obtain the hardness
distribution in the base metal, in the HAZ region, and in the welding metal.
Analyses for the value of hardness in the three region namely, base metal, HAZ,
and welding metal will be related to the change in microstructure. But the
increase the temperature effection the upset value become larger and the sample
become shorter.
Friction welding method can applied for the joint solid steel ST60. The
microstructure in the joining was found size change that mean there is change in
mechanical properties. The hardness of welding metal become increase from 205
VHN until 233 VHN. And then for tensile strength become increase from six
specimen averages are 75,208 kg/mm2.
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