Category: ‘Casting’

Forging Processes-Open Die Forging Drop Forging Press Forging Upset Forging Swaging Roll Foring

July 6, 2011

Forging dates back to ancient times and was associated with the village blacksmith.  Virtually all ductile metals may be forged by first preheating the work piece to a forging temperature.  The work piece can be a billet, a ... Read More...

Casting Sand Casting Full Mould Permanent Mould Die Casting Investment Casting

July 6, 2011

Castings are made by pouring molten metal into a recessed-mould or die.  When the metal cools it takes the shape of the mould or die.   Ferrous alloys, Copper alloys, Aluminium alloys, Tin alloys, Magnesium alloys etc can a... Read More...

Casting Forging Primary Metal Forming Processes

July 6, 2011

Process Economic Quantity Materials Size Range Minimimum thickness Sand Casting Small/Large Most Metals Small to Large 3mm Die Casting Gravity Large Al,Cu,Mg,Zn 1-60 kg 3mm Die Casting Large ... Read More...

Cutting Tool Materials

July 6, 2011

High Carbon Steel This material is one of the earliest cutting materials used in machining.  It is however now virtually superseded by other materials used in engineering because it starts to temper at about 220oC .  This s... Read More...

Relative effect alloying elements

July 5, 2011

The combined effect of alloying elements results from many complex interactions resulting from the processing history, the number and quantities of constituents, the heat treament, the section shape etc etc..  Some basic rule... Read More...

Some calculated Stress Areas for ISO Metric Threads medium fit 6H 6g

July 5, 2011

Tensile Strength | Yield Strength | Typical Yield | Typical Tensile | Yield strength & Yield point | Stainless Steel Tensile Strength | Bend Testing | Difference Between Yield and Tensile ... Read More...

Screw Threads Stress Calculation

July 5, 2011

Tensile Strength | Yield Strength | Typical Yield | Typical Tensile | Yield strength & Yield point | Stainless Steel Tensile Strength | Bend Testing | Difference Between Yield and Tensile ... Read More...

Table Of Weld Capacities

July 5, 2011

The fillet weld capacity tables related to the type of loading on the weld.  Two types of loading are identified traverse loading and longitudinal loading as show below The weld loading should be such that { (FL/PL)... Read More...

Properties of weld groups with welds treated as lines

July 5, 2011

It is accepted that it is reasonably accurate to use properties based on unit weld thickness in calculation to determine the strength of welds as shown in the examples on this page.  The weld properties Ixx Iyy and J are assu... Read More...

Assessment of Fillet Weld Groups

July 5, 2011

Important note: The methods described below is based on the simple method of calculation of weld stress as identified in BS 5950- clause 6.7.8.2 . The other method identifed in BS 5950 - 1 clause 6.7.8.3 as the direction method... Read More...

Weld Strength Calculations

July 5, 2011

Tensile Strength | Yield Strength | Typical Yield | Typical Tensile | Yield strength & Yield point | Stainless Steel Tensile Strength | Bend Testing | Compression Testing | Difference... Read More...

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