# K Factor And Y Factor Pdf

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Figure 1 When you bend sheet metal, the neutral axis shifts toward the inside surface of the bend. The K-factor is the ratio of the neutral axis location t to the material thickness Mt.

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## Sheet Metal Bending – Methods, Design Tips & K Factor

Stop wasting time on admin! Order your sheet metal fabrication online. Immediate pricing and short lead times all over the UK. Bending is one of the most common sheet metal fabrication operations. Also known as press braking, flanging, die bending, folding and edging , this method is used to deform a material to an angular shape.

## Sheet Metal K-Factor, Bend Allowance and Flat Length Calculations

Bending is a manufacturing process that produces a V-shape, U-shape, or channel shape along a straight axis in ductile materials, most commonly sheet metal. Typical products that are made like this are boxes such as electrical enclosures and rectangular ductwork. In press brake forming, a work piece is positioned over the die block and the die block presses the sheet to form a shape. When bending is done, the residual stresses cause the material to spring back towards its original position, so the sheet must be over-bent to achieve the proper bend angle. The amount of spring back is dependent on the material, and the type of forming. When sheet metal is bent, it stretches in length. The bend deduction is the amount the sheet metal will stretch when bent as measured from the outside edges of the bend.

The K factor is the most important and elusive variable of bending, because it varies both as a function of the material and according to parameters such as angle and tooling. The K factor is defined as the ratio between the material thickness T and the neutral fibre axis t , i. Bend allowance is a fundamental parameter to calculate sheet elongation. This is defined as the length of the neutral fibre from the beginning to the end of the arc generated by the bend. To calculate the bend allowance, the K factor and the derived coefficient called the Y factor, insert the thickness and initial length of the sheet into the cells on the left. After bending the sheet, insert the inner radius, and flanges A and B. Compose your new press brake with our innovative online configurator and receive a personalized quote.

Y factor and K factor represent part constants used in formulas to calculate the developed length of flat sheet metal required to make a bend of a specific radius​.

## Y factor and K factor.

In sheet metal, there is a powerful bend constant known as the K-Factor. It ultimately allows you to estimate the amount of stretch without knowing what type of material you are bending. Here is a book definition of K-factor:.

Mathematically k factor value is equal to the ratio of position of neutral axis and sheet thickness. In this article we will discuss sheetmetal bend deduction , bend allowance , K-factor , Y-factor and sheet metal flat pattern calculations. To understand what is K Factor? Sheet metal bending is a forming operation where sheets are deformed plastically to change its shape. During sheetmetal bending, material is stressed beyond its yield strength but below the ultimate tensile strength.

Only problem I am running into is what bend radii and what k-factors do I input to Solidworks to ensure that my flat views of each component are correct when i create the prints. If anyone has worked with SS and the sheet metal bending features on solidworks and knows what these values should be

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Но я уже забронировала номер, обиженно сказала Сьюзан.  - Нашу старую комнату в Стоун-Мэнор. - Я понимаю, но… - Сегодня у нас особый день - мы собирались отметить шесть месяцев. Надеюсь, ты помнишь, что мы помолвлены.

Личный помощник директора отказывался верить ее словам. - Никогда не слышал об. - Никто не слышал.

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