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Title: welding with dissimilar metals ppt
Page Link: welding with dissimilar metals ppt -
Posted By: rajita
Created at: Thursday 17th of August 2017 05:29:10 AM
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Welding of dissimilar metals
Abstract:
There are many applications where welding constructions are produced from materials of different structures. the same applies to mechanical problems of wear, in a situation of high temperature or other conditions in which different properties required from different parts of the same weld.

This leads to the necessity of connection of dissimilar metals. Between a successful weld dissimilar metals is one that is as strong as the weaker of the two metals being joined, i.e. with sufficient tensile strength an ....etc

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Title: The Structure of Metals
Page Link: The Structure of Metals -
Posted By: baluvenugopal
Created at: Thursday 17th of August 2017 04:32:21 AM
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The Structure of Metals



Crystal Structure of Metals

Common crystal structures for metals
Body-centered cubic (BCC) - alpha iron, chromium, molybdenum, tantalum, tungsten, and vanadium.
Face-centered cubic (FCC) - gamma iron, aluminum, copper, nickel, lead, silver, gold and platinum.
Hexagonal close-packed - beryllium, cadmium, cobalt, magnesium, alpha titanium, zinc and zirconium.

Permanent Deformation and Twinning in Crystal
Figure 1.6 (a) Permanent deformation of a single crystal ....etc

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Title: Welding of Metals
Page Link: Welding of Metals -
Posted By: Reshma
Created at: Thursday 17th of August 2017 04:47:33 AM
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Welding

Welding is the process of joining together pieces of metal or metallic parts by bringing them into intimate proximity and heating the place of content to a state of fusion or plasticity

following are the key features of welding:
The welding structures are normally lighter than riveted or bolted structures.
The welding joints provide maximum efficiency, which is not possible in other type of joints.
The addition and alterations can be easily made in the existing structure.
A weld ....etc

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Title: TREATMENT OF CERTAIN HEAVY METALS BEARING HAZARDOUS WASTES GENERATED IN SHIP BREAKIN
Page Link: TREATMENT OF CERTAIN HEAVY METALS BEARING HAZARDOUS WASTES GENERATED IN SHIP BREAKIN -
Posted By: Patel Maulik
Created at: Thursday 17th of August 2017 06:04:13 AM
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Prepared by:
Amit B. Mahindrakar

Introduction

This study is motivated by a real problem at the Alang ship-dismantling facility near Bhavnagar in Gujarat. The focus of this study is the paint chip waste which is generated in ship breaking activity. Alang, located 56 Km away from Bhavnagar city in Gujarat, came up as ship breaking site during 1982-83. Hundreds of old ships, after their useful life, are broken at the Alang ship breaking yards without any precaution to protect the environment. Ship breaking and its harmful consequ ....etc

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Title: HEAVY METALS Cu2 Pb2 OF CHITOSAN COMPLEXES EXTRACTED FROM COCKROACHES OF RWANDA
Page Link: HEAVY METALS Cu2 Pb2 OF CHITOSAN COMPLEXES EXTRACTED FROM COCKROACHES OF RWANDA -
Posted By: [email protected]
Created at: Thursday 17th of August 2017 07:58:22 AM
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CHARACTERISATION AND SORPTION PROPERTIES TO HEAVY METALS (Cu2+, Pb2+) OF CHITOSAN COMPLEXES EXTRACTED FROM COCKROACHES OF RWANDA

ABSTRACT
Cockroaches of Rwanda are one of the most important sources of chitosan. In chitosan extraction from Cockroaches, conditions for deproteinization were: 8% NaOH at 95 C for 1 h and demineralization involved treatment with 6.7 % HCl at room temperature. Yield of extract products was .. Chitin-glucan insoluble complexes in the extracted products were identified by FTIR specusing referen ....etc

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Title: BIOSORPTION OF METALS full report
Page Link: BIOSORPTION OF METALS full report -
Posted By: nisha
Created at: Thursday 17th of August 2017 04:46:35 AM
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BIOSORPTION OF METALS


SELECTION OF BIOMASS

While choosing the biomass for metal biosorption, its origin is a major factor .

Biomass can come from, activated sludge or fermentation waste from industries like those of food, diary and starch .

organisms coming from their natural habitats are good sources of biomass.

Fast growing organisms that are specifically cultivated for biosorption purposes


TYPES OF BIOMASS


Agricultural products

Seaweeds

Fungi and Yeast

Bacteria
....etc

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Title: Metals
Page Link: Metals -
Posted By: rijintom
Created at: Thursday 17th of August 2017 04:49:27 AM
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Ferrous metals
Ferrous metals contain iron. Examples are cast iron, mild steel, medium carbon steel, high carbon steel, stainless steel, and high speed steel.
Non-ferrous metals
Non-ferrous metals do not contain iron. Some common non-ferrous metals are aluminium, duralumin, copper, zinc, brass, gilding metal and tin
Joining Metals
Brazing
Welding
Riveting
Machine Nuts & bolts
1.Two pieces of steel sheet are to be brazed. The steel must first be cleaned so that grease and dirt is removed. Wire w ....etc

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Title: cryogenic treatment on metals
Page Link: cryogenic treatment on metals -
Posted By: musthu
Created at: Thursday 17th of August 2017 06:19:10 AM
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Improving component wear performance through cryogenic treatment
Controlling machine wear is a fundamental function of lubrication. By properly specifying lubricant viscosity, using appropriate modifying additives, and controlling contamination, wear rates can be
minimized to extend equipment life. Cryogenic treatment of tooling steels is a proven technology to increase wear resistance and extend
intervals between component replacements for blades, bits, and machining mills. Recent studies have been conducted on the effects of cryoge ....etc

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Title: ELECTRON SCATTERING RESISTIVITY OF METALS ppt
Page Link: ELECTRON SCATTERING RESISTIVITY OF METALS ppt -
Posted By: Sasmita Mishra
Created at: Thursday 17th of August 2017 06:58:18 AM
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CONDUCTIVITY ,FERMI LEVEL ,
MEAN FREE PATH &
RELAXATION TIME
FOR TYPICAL MONO-VALENT METALS
IS SHOWN IN TABLE

The conductivity may be obtained experimentally .
Further we can get by using eqn given below
= ( n*Qe2 * )/me --(1)
but obtained may not be accurate but we will get an idea of magnitude of . In a monovalent metal no of free e- /m3 is equals the no of atoms /m3 . From table we find that relaxation time T is of the order of 10-14 sec .Thus we can say that T is extremely small f ....etc

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Title: Processing of Powder Metals Ceramics Glass Superconductors
Page Link: Processing of Powder Metals Ceramics Glass Superconductors -
Posted By: keerthi
Created at: Thursday 05th of October 2017 04:14:19 AM
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Processing of Powder Metals,
Ceramics, Glass & Superconductors


abstraction
Commonly used metals in P/M
Iron,Tin, Copper, Aluminum, and Nickel

It is a completive process with forging and machining

Parts can weigh as much as little as 2.5Kg or up to 50Kg ....etc

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