High-speed steels Service conditions: High contact stresses

Slides:

Advertisements

Similar presentations

Changing the Properties of Steels

Advertisements

Heat Treatment of Steel

Heat Treatment of Plain Carbon Steels. Isothermal Temperature-time Transformation Diagram n Let us do an experiment n Choose an eutectoid steel n Heat.

Heat treatment 1. Introduction

Annealing  Annealing is done to improve ductility (the ability to be drawn and extruded) and reduce brittleness.  Annealing consists of softening the.

Group 2 Steels: Medium Carbon Alloy Steels (0.25 – 0.55 %C)

Mechanical & Aerospace Engineering West Virginia University Strengthening by Phase Transformation.

Welding Metallurgy 2.

CARBON STEEL Microstructure & Mechanical properties

Manufacturing Processes Fundamentals of Cutting South Bend lathe Chip Formation Chip Breakers Feeds and Speeds Tool Materials Tool Properties Tool Wear.

Heat Treatment of Metals

Bachelor of Technology Mechanical

Thermal Processing of Metal Alloys

Annealing Processes All the structural changes obtained by hardening and tempering may be eliminated by annealing. to relieve stresses to increase softness,

PALESTINE UNIVERSITY BUILDING MATERIAL chapter No.#4 Steel.

Metal Alloys: Their Structure & Strengthening by Heat Treatment

Heat Treatment.

Group 4 Steels: Tools Steels and Their Uses High speed (HS) tools steels are used for high cutting speeds such as drills, mill cutters, taps and others.

- heating on at required temperature - dwell at temperature - cooling

Properties of Metals The Basics. Brittleness A property of a metal that does not allow movement of material or distortion before it will break.

Annealing, Normalizing, and Quenching of Metals

Conducted by the Die Materials Specification Subcommittee October 16th & 17th, 2007 Die Materials Specification Task Group Die Steel Quality & Heat Treatment.

B. Titanium-based Alloys Titanium is hcp at room temperature – and transform to the bcc structure on heating to 883 o C. Alloying elements are added to.

Surface hardening.

HEAT TREATMENT OF STEEL

Changing Properties Produced by Neil Liggett. Heat Treatments Heat Treatment is carried out to give a material the desirable properties, both mechanical.

C.K.PITHAWALA COLLEGE OF ENGG. & TECHNOLGY Presented By :- Group No :- 6 1 DereViral M Rajwadwala Faizal Mavdiya Yash

Group 3 Steels: Eutectoid Composition Steels Steels with carbon contents just below the eutectoid to the eutectoid composition (0.6 – 0.8 C) are used.

Effect of Cryogenic Treatment on Steels Manjunath M Project Intern UVCE Bangalore university.

Numbering Systems for Alloys

THEORY OF METAL CUTTING

Characteristics of Metals

THEORY OF METAL CUTTING

FERROUS AND NON FERROUS ALLOYS

5/10/ :46 PM TOOL STEELS SYLLABUS: COLD WORK TOOLS STEEL, HOT WORK TOOL STEEL, HIGH SPEED STEEL –HSS HIGH CARBON HIGH CROMIUM STEEL – HCHC OIL.

4/27/2018 2:57 AM TOOL STEELS © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may.

Heat Treatments Treating of materials by controlling cooling can produce differences in material properties.

The following heat treatments alter the properties of metals

Heat Treatment of Steel

Heat Treatments. Produced by Neil Liggett.

Thermal Processing of Metal Alloys

FERROUS AND NON FERROUS ALLOYS

Smt. S. R. Patel engineering college ,Dabhi.

HEAT TREATMENT PROCESS

The Consequence of Element Alloying.

Hardenable Steels Alloy Carbon > 1% %

Chapter 11: Metal Alloys Heat Treatment

STEELS Professor in Metals Studies Priit Kulu Department of Materials Engineering.

Chapter 22 Cutting-Tool Materials and Cutting Fluids

Identifying Metals and Their Physical Properties

Which of the following is a single phase that can occur in steels:

Group 3 Steels: Eutectoid Composition Steels

Microstructure of Steel

Last class - Improving hardenability - shift TTT curves to right

Continuous Cooling Transformation Diagrams

Heat Treatment of Metals

Hardenability Problem:

STEEL AS A CONSTRUCTIONAL MATERIAL

Group 2 Steels: Medium Carbon Alloy Steels (0.25 – 0.55 %C)

Die Materials Specification Task Group

Chapter 6: Metals & alloys Part 2

Ferrous Metals.

Metal cutting. Introduction Metal cutting or “Machining” is a process which removing unwanted materials from the work piece by the form of chips. The.

METALLIC STRUCTURAL MATERIALS

Fundamental Concepts of Metals Science

Heat Treatments Treating of materials by controlling cooling can produce differences in material properties.

What is Flame hardening?

Heat Treatment of Metals

OBJECTIVES: M112 Cutting Tools

Presentation transcript:

High-speed steels Service conditions: High contact stresses Bending and twisting loads Heating of cutting edges Surface abrasion with chips Vibrations

Requirements for material: High-speed steels Requirements for material: High hardness (HRC 62-68) High wear resistance Sufficient strength Sufficient toughness Heat resistance (red-hardness) is an ability to keep cutting properties upon long heating

Composition of high-speed steels Grade (Russian system) Alloying elements, % С Cr W Mo V Co Р18 0.7-0.8 3.8-4.4 17-18.5 0.5-1.0 1.0-1.4 - Р6М5 0.82-0.9 5.5-6.5 5.0-5.5 1.7-2.1 Р6М5К5 3.8-4.3 6.0-7.0 4.8-5.8 1.7-2.2 4.8-5.3

High-speed steels : secondary hardness arises in the process of tempering, in the issue of partial martensite decomposition and precipitation of dispersed carbides (carbide fines)

High-speed steels : Heat treatment includes quenching from high temperature and triple tempering Stage Cooling Triple tempering heating in hot medium

High-speed Steel Structure (grade Р6М5, Russian classification system) Annealed steel Quenched steel Tempered steel carbides martensite primary carbides tempered martensite secondary carbides