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

Finite Element Analysis of Pressure Vessel, Need a basic explanation of how...

Need a basic explanation of how to go about doing a plane strain analysis of a pressure vessel

Kkleins constraction, What is the limition of kkleins constraction?

What is the limition of kkleins constraction?

Explain about the eccentrically loaded footings, Explain about the eccentri...

Explain about the eccentrically loaded footings. ECCENTRICALLY LOADED FOOTINGS When footings have overturning moments and axial loads, the base pressure under the footing wi

Tension testing, The first laboratory report, covering the two-part exercis...

The first laboratory report, covering the two-part exercise involving tension testing and stress concentrations is due in lab two weeks after the conclusion of fatigue testing.

Strengh of material, case study of thermal stresses and composite bar

case study of thermal stresses and composite bar

Tap switches, Tap switches There are elements for connecting the variou...

Tap switches There are elements for connecting the various taps on the primary winding of the transformer to the power supply line. The switches are usually of the rotary dead

Influence lines for the force, Solve the following two questions of the tru...

Solve the following two questions of the truss. Note that A and G are pin supports.  1)  Sketch the influence lines for the force in bar DG (the load is moving on the top chord

Electric Vehicle:, The Nissan leaf has a battery size of 24 kWh and autonom...

The Nissan leaf has a battery size of 24 kWh and autonomy of 84 miles.

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