Compacting or briquetting, Other Engineering

        The operation of heating a green compact to an elevated temperature is known as sintering. It is a process by which solid bodies are bonded by atomic forces. It is carried out below the melting temperature of the major constituent of the blended power. Most metals are sintered at 70% to 80% of the melting temperature.

       Following changes occur during the process of sintering :

      (i) The density of the part is increased.

      (ii) Grain boundaries are formed.

      (iii) Plasticity is increased.

      (iv) Better mechanical interlocking is produced.

      (v) Volatile materials that are present are driven off, thus producing porous product.

      The sintering atmosphere is controlled to prevent oxidation of the work. The most frequently used atmosphere are dissolved ammonia and hydrogen.

Posted Date: 8/3/2012 4:56:55 AM | Location : United States







Related Discussions:- Compacting or briquetting, Assignment Help, Ask Question on Compacting or briquetting, Get Answer, Expert's Help, Compacting or briquetting Discussions

Write discussion on Compacting or briquetting
Your posts are moderated
Related Questions
Students are to undertake a tunnel blast design for the following conditions: • Tunnel is 5.5m wide by 5.5.m high • Rock is a granite with a UCS of 300 MPa • Drill hole diameter is

Question: (a) Describe the spreading and dispreading processes of a CDMA system. (b) Autocorrelation properties are used to recover the signals correctly at the receiver. Ex

Thrust indication: Although rpm gauges give an indication of the rotational speed of the compressor, they do have one drawback. They do not normally indicate the thrust output

Ewing’s molecular theory of magnetism   Every molecule of a magnetic substance behaves as a tiny magnet called molecular magnet. In an unmagnetized state the molecular m

Matrix laboratory solutions with matlab assignment help MATLAB (matrix laboratory) is an exact processing atmosphere and fourth-generation selection terminology. Designed by Nu

VDD=20V,RG=1MOHM,RD=3.3KOHM,RS=1KOHM,IDSS=8MA,VP=-6VFINDIDQ,VGSQ,VDS,VG,VD

Describe the operation an 8086 will perform when it excutes ADD AX,BX

4-7 DuPont and Net Income Ebersoll Mining has $6 million in sales, its ROE is 12%, and its total assets turnover is 3.2x. The company is 50% equity financed, and it has no preferr

the royal canadian hillies plan to locate a brandy carryout in the Yukan.A number of saint Bernard dogs ,trained by sergeant preston ,will be used to rescue lost tourists looking f

Fire safety management for restaurants: Staff in restaurants must be aware that customers who have been served their food are always reluctant to leave that food and evacuate.