|Getting the most from your Machines and Foundations - Alignment and Grout Replacement|
|Written by Alphatec Engineering|
|Wednesday, 16 March 2011 21:06|
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After the grout had been completely removed the crankcase was aligned. This work was carried out together with the mechanical contractor, and a reasonably good alignment was achieved, considering the age of the machine.
2.4 Grout Replacement:
Formwork was prepared and set in place to contain the grout pour. ALPHATEC 800 epoxy grout was mixed and poured to properly encapsulate the machine bases. Forms were removed the following day, and anchor bolts finally tightened after transferring the load from ALPHAPAD to grout by cutting off the protruding steel tubes.
These figures are based on the assumption that the bolt material has a tensile yield strength of 300 N/mm2, and that the bolt tension should be approximately 50% of this figure. The motor bolts should be tightened to 1740 Nm according to this calculation, but 1600 Nm was the maximum achievable with the equipment to hand, and is considered to be satisfactory.
|Last Updated on Friday, 18 March 2011 12:11|