Technological properties
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This document discusses various technological properties of materials: Machinability is defined as how easily a material can be cut or shaped by tools. It depends on properties like hardness, grain size, lubricants used. White cast iron is not machinable while grey cast iron is easy to machine. Weldability is how easily a material can be joined to itself or other materials through welding. It depends on properties like composition, strength at high temperatures, and thermal properties. Workability/formability is how easily a material can be shaped while solid through processes like forging and extrusion without cracking. Cold workability refers to shaping cold materials while hot workability is shaping hot materials. Castability is how easily
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原版一模一样【微信：741003700 】【(爱大毕业证书)爱荷华大学毕业证成绩单】【微信：741003700 】学位证，留信认证（真实可查，永久存档）原件一模一样纸张工艺/offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
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办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】格式相对统一，各专业都有相应的模板。通常包括以下部分：
校徽：象征着学校的荣誉和传承。
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授予学位：本部分将注明获得的具体学位名称。
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其他信息：根据不同的专业和学位，可能会有一些特定的信息或章节。
办理(爱大毕业证书)爱荷华大学毕业证【微信：741003700 】价值很高，需要妥善保管。一般来说，应放置在安全、干燥、防潮的地方，避免长时间暴露在阳光下。如需使用，最好使用复印件而不是原件，以免丢失。
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Technological properties
- 1. Types Of Technological Properties BY Dr. K. SENTHILARASAN ASSISTANT PROFESSOR DEPARTMENT OF PHYSICS E.G.S.PILLAY ARTS & SCIENCE COLLEGE NAGAPATTINAM-611002
- 2. Types of technological properties • Machinability. • Weld ability. • Workability or formability. • Cast ability • Malleability
- 3. Machinability Machinability may be defined as the property of a material indicating the ease with which a given material can be cut or removed by cutting tool in various machining operations such as turning, drilling milling etc. Machinability of a material depends upon: • mechanical properties like hardness, work hardening, shearing strength, rigidity of the material etc., • Physical properties like grain size, composition, size, microstructure, coolant etc., • Feed and depth of cut. • Kind and shape of the cutting tool used. • Coefficient of friction between chip and tool. • Quality of the lubricant used during the operation.
- 4. • White cast iron is not machinable while grey cast iron is machinable in an easy manner. • The grey cast iron possesses carbon in free form as graphite flakes. These graphite flakes act to cause discontinuities in ferrite. This is helping the chips to break up easily during machining. • Excellent machinability materials: Zinc alloy, aluminum alloys, magnesium alloy, gun metals. • Poor machinability materials: Monel metal, high speed steel.
- 5. Weld ability Weld ability may be defined as the property of a material indicating the ease with which it forms a sound joint with similar or dissimilar material to fabricate a structure by the welding processes with or without application of pressure or filler material. Weld ability of materials is influenced by its composition, brittleness, strength at elevated temperature, thermal properties.
- 6. Workability or formability Workability or formability of a material may be defined as the property indicating the ease with which it can be formed into different shape and sizes by different metal forming processes like forging and extrusion while it is in solid state. Cold workability of a material indicates the ease of shape or size change in a cold condition without developing cracks or rupture. Hot workability of a material indicates the ease of shape or size change in a hot condition without developing cracks or rupture.
- 7. Cast ability Cast ability of a material is the property indicating the ease with which it can be formed into different shapes and size from its liquid state. The cast ability of material is affected by solidification rate, gas porosity, segregation and shrinkage. Metals with low solidification rate possess good fluidity and also fluidity and also good cast ability. Low rate of shrinkage and low segregation improve the cast ability of the material.
- 8. Malleability Malleability of a material is the property by virtue of which it can be deformed into thin sheets by rolling or hammering without rupture. It depends mainly on the crystal structure. Small grain size materials are used for making thin sheets and large grain size materials are used for making thick sheets. • Excellent malleability: gold, silver, aluminum. • Poor malleability: zinc, iron, nickel.
- 9. Thank you