High carbon tool steels, Mechanical Engineering

Assignment Help:

High Carbon Tool Steels

Tools are implements such are employed to shape, cut or deform other materials. They are largely made in steel, although other alloys have also been improved. The usual tool steels have C, W, Cr, Mo, V, Mn, and Si in the range of 0.6 to 1.0%. They have hardness and wear resistance. For shock resistance C is limited to 0.5%. W and Mo in between 2 to 18% offer high temperature strength. V in between 0.1 to 2% improves harden-ability whilst Si adds to toughness.

Though the tool and die steels are not generates in as large amount like other steels are, still they are industrially very significant. A variety of steel differing broadly in composition and treatment is utilized for varying reasons. They are employed in such operations as cutting, rolling, shearing and forming. These operations need adequate hardness, toughness, strength wear resistance and heat resistance. For a lot of reasons near-eutecoid and hyper-eutectoid steels have been employed for metal cutting but these plain carbon steels have tendency to lose hardness through tempering while rise in temperature arises during cutting. To overcome such problem high steep tool steel have been improved. The 18.4.1 category of high steel contains 18% W, 4% Cr and 1% V. These steels retain adequate hardness because of carbide formation that is a complex compound Fe4W2C. A tough matrix is provided via Cr. These steel might retain hardness upto a temperature of 500oC.

While 5-12% of cobalt is also added, in addition, the hardness throughout a secondary hardening procedure is increased at temperature around 600oC.


Related Discussions:- High carbon tool steels

Definition of screw conveyor, Definition of screw conveyor Screw convey...

Definition of screw conveyor Screw conveyors belong to the conveyer with traction component. It depends on the shaft with spiral blades in hematic chute to make material move o

Determine the maximum shear stress, Determine the maximum shear stress: ...

Determine the maximum shear stress: A beam of triangular cross section of base width 120 mm & height 80 mm is subjected to a shear stress force of 3 kN. Determine the maximum

Law of belting, if motion of the belt is reversed, how the law of the belti...

if motion of the belt is reversed, how the law of the belting shall be violated??

Plastic material and rigid plastic material, Plastic material and rigid pla...

Plastic material and rigid plastic material: For the plastic material, there is stress at which plastic deformation begins. A rigid plastic material is one in which the ela

Plc, proportional controller for lube oil temperature of engine working dia...

proportional controller for lube oil temperature of engine working diagram

Evaluate the speed of wheel, In an epicyclic gear train, the internal wheel...

In an epicyclic gear train, the internal wheels B and A and compound wheels C and D rotate independently about axis O. The wheels E and F rotate on pins fixed to the arm G. E gear

Corrosion assessment of flare and vru system, Q. Corrosion Assessment of Fl...

Q. Corrosion Assessment of Flare and VRU System? The worst case scenario shall be considered during material selection of Flare KO Drums. Depending on the fluid composition ent

__, what is magnetostriction?

what is magnetostriction?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd