Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Main Features of Laser Cutting Process
1) Laser cut kerf is very narrow resulting in material saving.2) Has very narrow heat affected zone (HAZ) and therefore gives low thermal distortion. Gives machine smooth cut surface reducing the need for subsequent trimming.3) The cut has square edges.4) There is no tool wear (contact free energy transfer).5) The work piece does not need holding against tool drag. Work holding demands are reduced to merely a locating role.6) Possible to cut through friable, brittle, soft or hard material or composites with ease.7) It is a non contact method with no cutting forces and is ideal for cutting flexible material such as clot h, rubber, corrugat ed cardboard, etc.8) Non directional, cuts equally well in all directions and can start cutting anywhere.9) Blind cuts can be made.10) The cutting speed is fast compared to other methods as the light beam is inertia less.11) Multistation operations from one laser are possible.12) It is easily automated by numerical control.There are five different ways, in which a laser can be used to cut different materials:a) Vapourisation: the beam energy heats the substrate to above its boiling point and material leavesas vapour and eject - this requires 10 times the energy of (b)b) Melting and Blowing: the beam energy melts the substrate and a jet of inert gas blows the melt out of the cut region - this requires around twice the energy of (c)c) Burning in reactive gas - the beam energy heats material to the kindling temperature, which then burns in a reactive gas jet; as in (b) the jet also clear the dross away - requires around 10 times energy of (d) for some materials.d) Thermal stress cracking or controlled fracturing - the beam energy sets up a thermal field in a brittle material ego glass such thatit can guide a crack in any direction.e) Scribing - variant on (a) whereby blind cut is used as a stress raiser allowing mechanical snapping along the scribed lines.
A long cylinder of radius 2 m hinged at point A is used as an automatic gate. When the water level reaches 15 m the gate automatically opens. Determine the magnitude of the net hyd
What is gear
If Either Wheel is Wobbling Causes of Problem Remedy Excessive wheel bearing play Distorted rim Improperly
Screw conveyor Screw conveyor during mixing and flow directing paddles are selectively adjustable for use on a wide variety of materials having dissimilar flow characteristics
As per Indian standard (IS 812-1957) Define weld as "a union between two pieces of a metal at faces rendered plastic or liquid by heat or by pressure or both filler metal may b
Q. Show Gasket Compression? Gasket compression can also be used as a guide for limiting bolt torque. Spiral wound gaskets should be compressed to an average of 75% of origin
Explain construction and working of Rope Brake Dynamometer? Determine Power also ?
Characteristics of a project
In case of welded vessels why is stress relieving in the form of post-weld treatment necessary? When a metal is welded together the point at which two surfaces are joined are s
A cantilever beam is loaded with a concentrated. Force of 5kN at the free end. The length of the cantilever beam is 1m having cross section of 50×50mm. determine the equation for b
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd