Remains of the welding wire in the weld seam.
The wire remains in the seam in violation of the synchronization and the wire feed speed of welding head. The defect is not valid and the junction with the spec...
Author: Ivan Perfilyev
Metallurgical science for the welding inspector.
Metallurgical science is the study of internal structure of the metal, and the relationship between this structure and properties of metals. In metallurgical sc...
The polymorphic transformations in metals (Part 7).
The transformation hardening of crystalline phases is a promising method of hardening metals. At temperatures above T0, the low-temperature modification of α is...
Impact toughness testing (Part 2).
The Charpy impact test machine consists of the pendulum, support, lever, arrow and the scale. Since the task is to measure the energy absorbed during the destru...
Welder Qualification Test (Part 8).
The documentation execution is the only part of the welding control process. Another part is the welding inspector himself, whose task is to determine the quali...