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How was the exam on fdm ad 301 winter 2013 ?

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How was the exam on fdm ad 301 winter 2013 ?

Postby subham » Sat Dec 07, 2013 6:09 pm

Hi friend How was the exam on fdm ad 301 winter 2013 ? Please shear your experience how was it ?
Is it ok for getting pass marks?
which is the grade you will accept on fdm ad 301 winter 2013 ?
Please share ...........................
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby kamal » Sat Dec 07, 2013 10:13 pm

Hi shubham..
Paper was preety okay. I feel I ll get passing marks. :D
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby subham » Sat Dec 07, 2013 10:22 pm

kamal wrote:Hi shubham..
Paper was preety okay. I feel I ll get passing marks. :D


nice yar sounded good :lol: :lol: :lol: :lol: :lol:
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby Rakshit » Sun Dec 08, 2013 10:54 pm

anybody knows about merchant's cycle??
or honning,buffing
haZ?????
extremely out of syllabus exam
#disappointed with I.e.i
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby Rakshit » Sun Dec 08, 2013 10:59 pm

Atleast finish ur exam pattern within your extreme syllabus iei...bt thankfully to god I think i'll clear tht exam with 60 marks or so
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby subham » Mon Dec 09, 2013 12:26 am

Rakshit wrote:anybody knows about merchant's cycle??
or honning,buffing
haZ?????
extremely out of syllabus exam
#disappointed with I.e.i


No all are in syllabus
Merchant's cycle is from metal cutting
Honning,buffing are spacial metal cutting technique
HAZ is Heat afected Zone come from welding?
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby Ishlo9 » Mon Dec 09, 2013 12:45 am

The heat-affected zone (HAZ) is the area of base material, either a metal or a thermoplastic, which has had its microstructure and properties altered by welding or heat intensive cutting operations. The heat from the welding process and subsequent re-cooling causes this change from the weld interface to the termination of the sensitizing temperature in the base metal. The extent and magnitude of property change depends primarily on the base material, the weld filler metal, and the amount and concentration of heat input by the welding process. 8-)
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby Ishlo9 » Mon Dec 09, 2013 12:53 am

Cutting Force Analysis - Merchant's Circle
| |
Forces experienced by a tool during cutting is detrimental in design of mechanical structure of cutting machine, predicting power consumption, determining the tool life and increasing the productivity. In this video lecture we will analyse how to predict cutting forces using Merchant's circle analysis.

Merchant's Circle Analysis
Steps involved in Merchant's circle analysis is as follows. Since we know angle of resultant force at tool side, draw a line parallel to this. On one end of this line draw shear force(Fs), magnitude and direction of which is known. Now draw a line perpendicular to shear force line, it will meet resultant force line at one point. You can draw a circle assuming the intersected line as diameter of the circle, this is known as Merchant's circle. It is shown in figure below.

http://www.learnengineering.org/2013/01 ... ircle.html

http://nptel.iitk.ac.in/courses/Webcour ... /LM-08.pdf

http://www.uotechnology.edu.iq/dep-mate ... .pdf....... 8-) :)
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby Ishlo9 » Mon Dec 09, 2013 12:56 am

What is the definition of "honing"?
A precision abrasion process in which a relatively small amount of material is removed from a surface by means of abrasive stones. The goal is to obtain a desired finish or extremely close dimensional tolerance.

Learn more about honing in the class Intro to Abrasives 100 below.

:arrow: http://www.toolingu.com/definition-2501 ... ing.html... :) 8-)
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Re: How was the exam on fdm ad 301 winter 2013 ?

Postby Ishlo9 » Mon Dec 09, 2013 12:59 am

LET'S TALK ABOUT BUFFING

1-800-9-SCULPT

For good buffing results, follow the few simple but important rules contained in this booklet. First, let's get acquainted with some of the buffing terms commonly used:

A SECTION OR SINGLE BUFF, consists of layers of material sewed together in various ways. It is usually about 1/4 inch thick at the face.

A BUFFING WHEEL consists of one or more single sections. You can buy ready made multiple buffs, which are single sections sewed together, or you can assemble any thickness buffing wheel you wish by putting together single or multiple buffs on your spindle. Buffing wheels should always be mounted on your spindle between flanges firmly gripping the sides.

FLANGES are the metal discs between which buffing wheels are mounted. Each DICO wheel is supplied with a pair of special toothed flanges which bite into the buffing wheel to prevent it from slipping.

THE FACE, OR edge, of a buffing wheel is the working surfaces.

PREFACED, means that the trued wheel face has a soft nap which prepares it for easy applications of compositions.

A COMPOSITION, OR COMPOUND, is the material applied to the face of a buffing wheel to enable you to obtain the finish you desire. It consists of abrasives, which do the work, held in suspension by wax or grease, which acts as a binder to hold the abrasive to the buff. There are many kinds of compositions, ranging from coarse cutting emery to the finest jewelers' rouge', and each has a particular use. Buffing wheels will not product results without compositions, DICO compositions are specially compounded for easy application and to give dependable results.

SPINDLE SPEED is the speed of your spindle expressed in R.P.M., or revolutions per minute.

SURFACE SPEED, or S.F.P.M., is the speed at which the face of your buffing wheel travels, as distinguished from the spindle speed of your buffing or polishing head. S.F.P.M. is an abbreviation meaning Surface Feet Per Minute. It is important that you know the S.F.P.M. of your wheel, as it should be varied to obtain the best results for coarse buffing cutting down, or coloring. For best results, your wheel should maintain a S.F.P.M. at 3,600-7,500. The higher the speed the better and quicker the results. Formula for calculating S.F.P.M. is S.F.P.M.=1/4 diameter of buff multiplied by the spindle speed in R.P.M. Thus, an 8" wheel @ 3,600 R.P.M. =2 x 3600 R.P.M. or 7200 S.F.P.M.

COARSE BUFFING means buffing with coarse compositions, such as emery, to remove rust, grinding marks, and rough surface imperfections.

CUTTING DOWN means buffing with sharp cutting compositions, such as Tripoli and Stainless, to remove additional surface imperfections and give a moderate luster.

COLORING means the final buffing, which is done with various softer or finer compositions to bring out the natural color or luster of the material. Most polishing projects will require more than one buffing operation in each of the above classes. You may find it advisable in some instances to color, or even to cut down, with two or more compositions or with the same composition on different type buffing wheels in order to obtain the result you desire.



http://www.sculpt.com/technotes/buffing ... ngtips.htm
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