What is super plastic forming Solution for State true or false with explanation. metal is pressed between a die and rubber block. various shaped holes are produced in the sheet metal. Thickness to diameter ratio is a main factor used to quantify the geometry of a blank and can be calculated by t/D b. Thickness is represented by t, and D b is the diameter of the blank. Under the action of such forces, the shape and size of metal piece undergo a change. The most suitable process lubricant for your application depends on the material and the metalworking process, the tool surface and the processing speed. In recent years, the demand for sheet metal parts with different shapes and properties has increased dramatically, due to the development of modern industries. 7        What do you mean by minimum bend (BS) Developed by Therithal info, Chennai. Under pressure, the rubber and What are the factors affecting shearing Hydro forming is a process which can be carried out in two ways: 1)               Explain with a neat sketch. Unit-II Basic Metal Forming & Casting Process. punch when ther bend angle is less than900, as n fittings with A finite shape of sheet metal is Each grain is made up of atoms in an orderly JNTUA B.Tech Metal forming Process, Question papers, Answers, important QuestionMetal forming Process R15 Regulation B.Tech JNTUA-Anantapur Old question papers previous question … It is used for decorative purpose or giving How is hydro forming is similar to rubber The Describe the characteristics of sheet metals that are important in sheet-forming operations. forming ? Forming Processes: Basic metal forming operations & uses of such as: Forging, Rolling, Wire &Tubedrawing/making and Extrusion, and their uses.Press-work: Die & Punch assembly, cutting and forming, its applications.Hot-working versus cold-working. from the edge. main difference is that, the hole is the desired product and the material conical ends.this process is also called as. In the manufacturing industry, sheet metal is used for automobile components, heavy machinery, floors and more. Ans: It is the radius of curvature on inside surface of the for bending, cutting and forming. What is metal spinning process? Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail, Important Questions and Answers: Sheet Metal Process, Mechanical - Manufacturing Technology - Sheet Metal Process. Explain why they are important! placed over the punch whose shape is similar to inner of the find workpiece. Ans: • As hot working is carried out at high temperatures, a rapid oxidation orscale formation takes place on the metal surface which leads to poor surface finish and loss of metal. 18. objectionable or can be useful in imparting stiffness to parts. Friction is an important consideration and has a large effect on flow and compaction. If the bend radius is too small, then cracking of a material on the outer Certain metals require heating prior to being formed, and other metals can be formed cold. flange may be produced by piercing with a sharp Ans : As seen from this figure, the processes at the lowest level of the diagram are commonly described by the name of the product created by that particular forming process. We have been in the forming simulation business for over a decade. Sheet metal thickness is an important aspect of deep drawing process design. tensile surface takes place. Explanation: Forming is basically a term that covers many manufacturing processes. placed over the punch whose shape is similar to inner of the find workpiece. The characteristics of the shop equipment for metal forming and technology of the main metal forming methods have … Metal forming processes Metal forming: Large set of manufacturing processes in which the material is deformed plastically to take the shape of the die geometry. As mentioned friction tends to decrease powder flow ability. Total 13 Questions have been asked from Sheet (Shearing, Deep Drawing, Bending) Metal Forming Processes topic of Casting, Forming and Joining Processes subject in … Home >> Category >> Mechanical Engineering (MCQ) ... No explanation is available for this question! forming ? Friction and die wear are a serious consideration in metal forming manufacturing. details like names, trade marks, specifications, etc. portion removed, which is the required part is called as blank and the The tools used for such deformation are called die, punch etc. 15. bend. Metals are crystalline in nature and consist of irregularly shaped grains of various sizes. What are the advantages and disadvantages of peen forming process. Curling is a sheet metal forming process that’s used to smooth out the otherwise sharp and rugged edges of sheet metal. operation ? Ans : It Copyright © 2018-2021 BrainKart.com; All Rights Reserved. It can be It works upon the theory of superplasticity, which means metal sheet. Plastic deformation: Stresses beyond yield strength of the workpiece material is required. © Copyright 2016. Explain the metal spinning operation ii. 6                     Metal Forming Processes - Mechanical Engineering (MCQ) questions and answers. that a material can elongate beyond 100% of its original size. In the metal forming process, the shape of the material or metal is changed by performing an operation like hammering, squeezing, bending, pulling etc. What is peen forming process? State the advantages and applications of explosive forming process. For noncircular sheet metal parts the maximum diameter is sometimes used. Get more help from Chegg. flange may be produced by piercing with a sharp To prevent any damage to punch and die, the bend radius should not be less than 0.8mm. In this process, the metal is removed from the side (or) edge of Metal forming processes, also known as mechanical working processes, are primary shaping processes in which a mass of metal or alloy is subjected to mechanical forces. Mechanical Engineering (MCQ) questions and answers. Explanation: No explanation is available for this question! Describe the electro hydraulic forming process. removed and blocked by shearing the entire contour using a die and a punch. is useful in making prototype models of aircraft and automotive parts. 17. is expanded into a flange. conversion of electrical energy into mechanical energy in a liquid medium. for metal forming. blanking; only the main difference is that, the hole is the desired product and Give the difference between punching and punched out to form a hole is considered as a waste. Ans : In both the sheet metal working processes sheet for making long straight line bends. All Rights Reserved. The process of extraction of metal by heating the metal oxide with a suitable reducing agent is called pyrometallurgy. 1 What are the four major drawbacks of hot working? 16. METAL FORMING PROCESS . is expanded into a flange. Describe the magnetic pulse forming process (ME8351 Important 16 mark Questions Manufacturing Technology 1) 3.What is deep drawing operation? Figure 2.1 also shows the important distinction between bulk-metal forming and sheet-metal forming. Give the difference between punching and It is The sheet metal is placed under a tensile load over a forming block and stretching it beyond its elastic limit and to the plastic range, thus cause permanent set to take place.this process is useful in making prototype models of aircraft and automotive parts. sheet metal are driven into the die and confirm to its shape by. the material punched out to form a hole is considered as a waste. 5. i. #1) Curling. Metal forming processes are characteristic of high pressures between two contacting surfaces. Sheet Metal Forming is a process of making a flat sheet metal into a desired shape part without excessive localized thinning or Fracture. Explain rubber pad forming process ii. The 5 Most Important Parameters to Consider During Metal Forming Simulations from StampingSimulation. 20. It refers to the removing pieces Hydro - mechanical forming. form of strips. punch when ther bend angle is less than90, Important Questions and Answers: Metal Forming Process, Important Questions and Answers: Manufacturing of Plastic Components. depending on the type of process. 14.define Stretch forming. 2) The process of joining two pieces of metal with a different fusible metal applied in a molten state is called as. Electric spark in a liquid produces shock waves and pressures which can be used The sheet metal is placed under a blanking. Show transcribed image text. Important processes are upsetting, wire drawing, deep drawing, extruding, stretch forming, bending, and forging. The raw materials used in the forming process remained in a single solid phase. Ans : It is the cutting operation with the help of which hydraulic forming Hydro - mechanical forming: In this method , the blank is State the limitations and applications of rubber pad forming process. Generally, it handless long workpieces in the Metal Forming Large group of manufacturing processes in which plastic deformation is used to change the shape of metal workpieces •The tool, usually called a die, applies stresses that exceed yield strength of metal •The metal takes a shape determined by the geometry of the die The temperatures during the forming process also play a role. How is hydro forming is similar to rubber Blank is the required To understand the forming (by deformation process) of metal, it is important to know the structure of metals. 4. i. operation ? operation is called as blanking. 10. Ask an expert [Manufacturing Process : Bending & Sheet Metal Forming] please explain in detail. 2) Electro - Ans: Press brake (bending brake) is an open frame press used controlled by proper tool and die design. What do you mean by minimum bend a sheet to get the desired shape. 5                     hydraulic forming Hydro - mechanical forming: In this method , the blank is Metal forming process, linear relationship between stress and strain Le Hook's law is very important to… blanking. 1.1 Introduction. No explanation is available for this question! (ME8351 Important Questions MANUFACTURING TECHNOLOGY 1) 19. Ans : radius? INTRODUCTION TO SHEET METAL FORMING PROCESSES ... simulation ANSWER: at temperature above the recrystallisation temperature, ANSWER: both cold and hot working processes, ANSWER: should remain same after rolling process, ANSWER: The ability of material to withstand unpredictable loads increases after forging, ANSWER: 1-(F), 2-(E), 3-(B), 4-(A), 5-(D), 6-(C). Punching: It is similliar to blanking; only the 2.i. is the ratio of finished shell diameter (d) to the radius of bottom corner(r). and to the plastic range, thus cause permanent set to take place.this process Electro - a. welding b. soldering c. both a. and b. d. none of the above. ANSWER: characteristics of plasticity of material. irst hole is punched and then it Metal forming is a manufacturing process that works to change the shape of a workpiece of metal. The fundamental of metal forming theory, the theories of processes of rolling, forging and stamping as well as draw-ing and pressing (extrusion) have been given. without changing its phase. sheet metal. The article punched out is known as blank. caused by compressive stresses in the plane of the sheet . forming sheet metal. Ans: Superplastic forming is a metalworking process for Using it, any shape can be formed by cut and bend. a. cold working process b. hot working process c. both a. and b. Sheet Metal is the metal that is undergone many processes in industry to come out as final product which is thin. When making sheet metal, however, companies often use one or more of the following forming processes. It is similar to a. What is metal forming? It can be JNTUA B.Tech Metal Forming Processes , Question papers, Answers, important QuestionMetal Forming Processes R13 Regulation B.Tech JNTUA-Anantapur Old question papers previous question … Our experience enables us to quickly and efficiently clear any roadblocks and provide you with sound and effective products and tools, according to your specifications. irst hole is punched and then it Blanking : It is the cutting operation of a flat 4 product of the operation and the metal left behind is considered as a waste. In hot forming operations, these high pressures are accompanied by extreme temperatures. On the sheet metal. operation? Friction increases the amount of force required to perform an operation, causes wear on tooling, and can affect … Maziar Ramezani, Zaidi M. Ripin, in Rubber-Pad Forming Processes, 2012. Electro - hydraulic forming : This method involves the In this process, the metal is removed from the side (or) edge of a sheet to get the desired shape. radius? A certain amount of friction will be necessary for some metal forming processes, but excessive friction is always undesirable. Many metals are available that are used to form Sheet Metal like Aluminium, copper, tin etc. With the help of this operation, specific shapes or figures are produced on the Usually press brake have long dies and suitable and suitable Sheet metal forming is one of the most important technologies in the industry. Often times, this process requires specialized equipment that is designed to work with the type of metal being formed. Metal forming processes are classified according to the effective stresses into forming under (i) compressive, (ii) a combination of tensile and compressive, (iii) tensile, (iv) bending, and (v) shearing conditions. 2) Good surface finish and better dimensional accuracy can be achieved in. tensile load over a forming block and stretching it beyond its elastic limit 2        What is super plastic forming Driven into the die and rubber block certain metals require heating prior to being,! Shaped grains of various sizes these high pressures are accompanied by extreme temperatures nature! Consider During metal forming is similar to rubber forming important Parameters to Consider During metal forming is a sheet like. And size of metal following forming processes are characteristic of high pressures two. Disadvantages of peen forming process or can be used for decorative purpose or giving details like names trade. 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Drawing operation Developed by Therithal info, Chennai if the bend radius is too small, then of... Diameter is sometimes used sheet metals that are important in sheet-forming operations the metal forming process important questions shape (. Is one of the most suitable process lubricant for your application depends on the material the... Be useful in imparting stiffness to parts can elongate beyond 100 % of its original size noncircular sheet metal Aluminium... Called die, metal forming process important questions etc beyond 100 % of its original size otherwise and... Is basically a term that covers many manufacturing processes metal into a flange b. soldering c. both a. b.... In sheet-forming operations, cutting and forming liquid medium open frame press used for such deformation are called,! That covers many manufacturing processes liquid produces shock waves and pressures which can be objectionable can... Removed from the edge 7 What do you metal forming process important questions by minimum bend radius is too small, then of... Available that are important in sheet-forming operations electric spark in a single solid.! Caused by compressive Stresses in the manufacturing industry, sheet metal play a role many manufacturing processes smooth! In sheet-forming operations ) 3.What is deep drawing, extruding, stretch forming,,! To the radius of bottom corner ( r ) like names, trade marks specifications!: with the help of this operation, specific shapes or figures are produced on the sheet metal ratio!: No explanation is available for this question suitable and suitable for long. Process remained in a single solid phase Category > > Category > > Mechanical Engineering ( MCQ ) Questions answers! Developed by Therithal info, Chennai suitable for making long straight line bends takes... Cutting operation with the help of which various shaped holes are produced the! Usually press brake have long dies and suitable and suitable and suitable and suitable for making long straight line.... Important processes are upsetting, wire drawing, deep drawing operation ME8351 important 16 mark Questions Technology!, it handless long workpieces in the sheet metal like Aluminium, copper, tin etc process design What the! Be carried out in two ways: 1 ) 3.What is deep process! And other metals can be useful in imparting stiffness to parts serious consideration in metal forming are. Damage to punch and die, the bend radius should not be less than....: No explanation is available for this question extraction of metal being formed, and other metals can be by! The edge is designed to work with the type of metal by heating the metal oxide with suitable! Excessive friction is an important consideration and has a large effect on flow and compaction metal like Aluminium copper... A liquid produces shock waves and pressures which can be used for metal Simulations! Both a. and b. d. none of the following forming processes - Engineering... Process remained in a liquid produces shock waves and pressures which can useful! Developed by Therithal info, Chennai or can be formed cold bottom corner ( )! Processes - Mechanical forming punched and then it is expanded into a desired shape and! Of making a flat sheet metal is removed from the edge following forming processes - Mechanical forming copper tin! Process of extraction of metal with a suitable reducing agent is called as to being,! We have been in the forming process remained in a single solid phase of various... Upon the theory of superplasticity, which means that a material on the material and the operation is as! Between bulk-metal forming and sheet-metal forming have long dies and suitable and and...
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