Slag Inclusion

slag inclusion

[′slag in′klü·zhən]
(metallurgy)
Slag entrapped in solidified metal.

Slag Inclusion

 

a defect in metal intermediate and finished products made primarily by rolling or forging. Slag inclusions are elongated accumulations of nonmetallic inclusions, from several millimeters to several centimeters in length; they usually form in the metal during pouring. They are arranged in the direction of the predominant flow of the metal upon deformation (mainly, on the surface of the metal or in the adjacent layers). Slag inclusions are removed mechanically, for example, by chiseling, flame treatment, and other methods.

slag inclusion

A nonmetallic solid material which is trapped within a weld.
References in periodicals archive ?
Subsequent radiography confirmed the presence of this defect, which is believed to be a slag inclusion (Marron and Kosnik, 2008).
Figure 1 shows a liquid slag inclusion where sand grains have been embedded in the slag material, creating a liquid sand-slag agglomerate.
Additionally, impurities like slag inclusions collect at the inside bore of the pipe which is usually machined.
Slag inclusions occur when the slag gets trapped inside of the weld metal, which could weaken weld components and reduce serviceability.
Second, since the ESR process has a considerable capability for the removal of large refractory or slag inclusions, the use of complex filters and tundish arrangements in the VIM can be minimised.
They cover component casting, cast house processes, casting hydrodynamics, heat transport during component casting and cast house processes, structure and structure formation in cast materials, microsegregation in alloys, heat treatment and plastic forming, precipitation of pores and slag inclusions during the casting process, solidification and cooling shrinkage of metals and alloys, and macrosegregation in alloys.
Puddled iron -- the material used byBartholdi and Eiffel -- is relatively soft and contains a high proportion of slag inclusions, silica fragments and other impurities.
Conclusions on how to avoid cracks, solidification pores, slag inclusions and other defects of the castings, can be drawn from the theoretical models.
The test mold pour weight must be calculated onto the pour weight and cycle time so that there is sufficient metal in the ladle after pouring the castings to produce quality test bars without slag inclusions or faded iron that will not meet specifications.
2 T leads to the noticeable deterioration in the quality of a lateral surface of the ingot and appearance of slag inclusions at the ingot periphery (Figure 3).
If it is assumed that most AE activity, mainly the signals with large amplitude, during the first loading of an incomplete penetrated weld results from the fracture of slag inclusions and the opening of poorly bonded material, the observed distribution indicates clearly that these AE events mainly take place at lower loads.