Machining jig

Liquid-phase carbonization occurs for some precursors, such as pitches, which become viscous fluids before carbonization. This process has been used to produce various polycrystalline graphite blocks for steel refining and electrical discharge machining, jigs for the growth of semiconductor crystals, structural components of nuclear reactor, etc. 

Scouring may be conducted on jigs, boil-off machines, or kettles, depending on fabric weight, constmction, and crease tendency ia the rope form. A combination of a synthetic detergent and soda ash is usually used and scouring is conducted at 85—100°C. Certain nylon blends may require less stringent conditions and the use of less alkaline builders, such as tetrasodium pyrophosphate. 

Many improvements have been made to streamline performance and to reduce machine operation labor. Some of these are tensionless jigs using variable speed electric motors with built-in drag for brakes, automatic reversing equipment, and automatic temperature and level controls. These machines are widely used for goods that are easily creased, such as fabrics consisting of filament acetate, heavy filament nylon, or cotton duck. They are also convenient for small dye lots and for sampling purposes. 

Basically, the optical method uses equipment such as alignment telescopes, jig transits, and sight levels. Instruments with built-in optical micrometers for measuring displacements from a referenced line of sight enable an accurate determination of target movements, which are mounted on the machine. 

Additives (g/1) Cistern Jig Winch or jet Package machine J-box conveyor Cold bleach... 

An alternative approach to detecting slight over-compression with an electrical circuit is to arrange for a preset amount of over-compression. Simple jigs of this type relying on a mechanical stop will probably produce excessive over-compression and be somewhat variable in use. The actual amount of over-compression of the test piece will depend on the stiffness of the load cell and errors can be introduced by any lack of parallelism of the plates and plunger. However, if they are machined to tight tolerances, this type of jig can be very effective and relatively cheap. 

Jigs machines that produce stratification of the particles in a bed or particles of differing densities by repeated differential agitation of the bed, the heaviest particles migrating to the lowest layer. The jigging action may be carried out in air or with the bed immersed in water or other liquids. 

Barriers are essential too in all tear-seal work, to prevent electrical contact between the cutting surface and the electrode or jig the welding machines are fitted with arc-anticipating units , which will operate in the absence of a suitable barrier. 

Fabrics are dyed in machines that move them through the dye liquor either under tension (jig) or relaxed (beck). Fabrics also can be dyed in full width by winding them on a... 

As mechanical agitation is important to effect the bio-fmishing, only selected processes and machines can be used, for example tubular fabric preferably cut to open width and treated in open width washers. In the rope form the loosened fibre particles are filtered out by the fabric and cannot easily be removed. The pad-batch process, jig or package dyeing machines are not effective in bio-fmishing. 

CNC PYROBAN 1500 can be exhausted on jigs, dyebecks and pressure beam or jet machines. 

CNC WET SS-80 is soluble in any proportion in cold or warm water as little as 0.25%. CNC WET SS-80 does an excellent job as a wetter or scour in the kier, open width boil-off, package machine, pad box, jig or dye beck. 

The base of the jig boring machine supports a saddle that moves in and out from the operator to the column. A table moves right or left on the saddle to complement the saddle movement. A massive column supports the spindle housing, which adjusts to the work location by moving up and down the column ways. The spindle moves inside a quill that is supported by the housing or spindlehead. 

Two extensometers, one attached to the test jig of the loading device for measuring the crack opening along the load line and another attached to the top and bottom sides of the specimen at the end of the initial crack, were used. The displacement of the actuator of the testing machine was also recorded. 

Articles with tight, smooth weaves may be degummed on the jig. Winches and jets are not generally recommended for complete degumming, but overflow machines can be used for knitted goods. 

In the past it has been and still is common practice to use mainly winches or jet machines for preparatory of both woven and knitted fabrics in tubular form. Starting with the winch beck, machineries for pre-treatment processes have passed through several stages of development (jig, beam, jet, overflow), some paralleled in washing machines. The current trends towards smaller series have led to a comeback of the conventional systems using jigger machines (Fig. 7-5) for textile processing. 

Machine used Circulating machine Package m/c Kier Jig Beck Rotary... 

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