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