Kellering and hemstitching are both machining techniques used in textile and fabric production, but they serve different purposes. Kellering involves the process of folding and stitching the edge of the fabric to prevent fraying and provide a finished look, often used in garments and home textiles. In contrast, hemstitching refers to a decorative technique that creates an open stitch along the hem or edge of fabric, typically for aesthetic purposes while also securing the fabric layers together.
conventional machining is that in which the control of removal of material is either by automatic machines or by man handled.while cnc machinig is that in which control of machining process is done by computes or through programming.
what is difference between lateral and longitudinal?
What is the Difference between technology innovation
What the difference between process piping and power piping?
There is no difference between a turning machine and a lathe. They are two names for the same kind of machine
we use water for maching in WJM, and abrasives in AJM.
conventional machining is that in which the control of removal of material is either by automatic machines or by man handled.while cnc machinig is that in which control of machining process is done by computes or through programming.
the colour of pattern may not be the same as that of casting,sharp changes are not provided on patterns but it provided on casting with the help of machining,the material of the pattern is not necessarily same as that of casting.
The main difference between EDM (Electrical Discharge Machining) and ECM (Electrochemical Machining) machines is in their working principles: EDM (Electrical Discharge Machining): EDM uses electrical discharges to remove material from a workpiece. It relies on sparks or discharges of electrical energy to erode the material, making it suitable for hard metals and complex shapes. ECM (Electrochemical Machining): ECM employs a chemical process to remove material. It uses an electrolyte solution and an electrically conductive tool to dissolve or erode the workpiece material, making it effective for conducting materials like alloys and difficult-to-machine metals. In summary, EDM uses electrical discharges, while ECM uses an electrochemical process to shape and machine materials.
The main difference between full annealing and normalizing is that fully annealed parts are uniform in softness (and machinablilty) throughout the entire part; since the entire part is exposed to the controlled furnace cooling. In the case of the normalized part, depending on the part geometry, the cooling is non-uniform resulting in non-uniform material properties across the part. This may not be desirable if further machining is desired, since it makes the machining job somewhat unpredictable. In such a case it is better to do full annealing.
Wire EDM uses a thin wire to remove surrounding material, where conventional EDM uses a shaped electrode to remove material.
In machining operations, a live center rotates with the workpiece, reducing friction and heat. A dead center does not rotate and can cause more friction and heat buildup.
In metal cutting, tool harder than workpiece
difference between as on and as at
An extremely accurate device used as an instrument for measuring the distance between two points. Often used in machining.
Lapping is a type of process in machining. In this process, an abrasive is placed between two surfaces that are rubbed together by a machine or human.
Non conventional Machining is a recent development in machining techniques. It is based on unconventional machining techniques using Laser beam, Electron beam, Electric arc etc. Conventional machining involves the direct contact of tool and work -piece, whereas unconventional machining does not require the direct contact of tool and wor piece. Conventional machining has many disadvantages like tool wear which are not present in Non-conventional machining. Examples : Electric arc machining, Laser cutting , electro discharge machining, plasma cutting etc Advantages of Non-conventional machining: 1) High accuracy and surface finish 2) no direct contact of tool and workpiece, so there is less/no wear 3) tool life is more 4 ) quieter operation Disadvantages of non-conventional machining: 1) high cost 2) complex set-up 3) skilled operator required