How To Make A Reasonable Quotation For On-site Repair Work
In many big on-site service companies cost estimating is accomplished by a professional who specializes in determining the cost of the repair work. In many small companies, all cost estimations are done by the designer or the operator of the machine tools. So the more experience in estimating similar on-site work, the more accurate the quotation will be.
There are some signification factors that determine the cost of the repair work. We take the on-stie flange surface repair work as the example to illustrate the cost estimation:
- From what material is the flanges to be machined?
The material of the flanges to be machined affects the amount of labor needed, the time and cutting tools consumption.
- What type of machine will be used to repair the flange surfaces?
The type of the machine-ID mounted flange facer, OD mounted flange facer, circular milling machine, CNC flange facing machine, etc. to be used in repair affects the cost. For each type, there is not only the cost of the machine itself, there is also the cost of the cutting tools.
- What are the major dimension of the flange?
This factor helps determine what size machines of each type will be required to repair the flange surfaces. Each machine used for on-site work has a different cost for use, depending on the initial cost of the machine and its age. Long setup and alignment times will be required when the machine is large and heavy.
- How much material is to be removed?
The processing amount of a flange will affect the machining time.
- What type of flange to be machined?
The type of flange-RF, FF, MF, TG, RTJ, etc. to be re-surfaced affects the time and cutting tools needed.
- How many flanges will be re-surfaced?
The number of flanges to be re-surfaced has a great effect on the cost. For one piece, labor and freight costs will be high. For a few pieces, these costs will be shared.
- What tolerance and surface roughness are required?
The tighter the tolerance and surface roughness requirements, the more time and machining tools needed in the work.
As a flange facing machine manufacturer, MT Portable Machines has extensive experience in machining flange faces based on decades of experience in the field of portable machine tools. For more information about flange facing machines, please contact info@mtportable.com
