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Rolled form of the strip to the roll direction, powder rolling can be divided into vertical rolling and horizontal rolling and tilting rolling three forms: vertical rolling of more general use, and there is a certain representation. Its size mainly depends on the state of powder properties and the roll surface. It includes the apparent density of powder loose powder flowability, powder compressibility and powder forming, etc. In early 1960s, China began to study Flocking Equipment the powder forming technology and achieved remarkable results. Tube history of metal powder rolling is from the middle of the 19th century.1mm.; rolling process parameters. As filtration and separation components, silencers, resistance, flame, electrical and magnetic materials as well as wear and friction materials, these materials are widely used in chemical, electronics, petroleum, machinery, automotive, instrumentation, nuclear and aerospace industrial sector.
After the powder in contact with the roller surface, only when the roll rotation (from the centerline of two roll) come to an angle, the powder can be roll bite and go into the deformation zone. Such as roll diameter, roll gap and rolling speed, roll surface state for the material way.) powder or alloy powder rolled into the porous or dense sheet, strip, foil, wire and tube, and the combination of materials as well as metal or metal and nonmetal.
It is more suitable for the preparation of dense material. But in the 1940s to 1950s, it had rapid development and achieved fruitful results in powder rolling theory, technology, equipment and materials applications. Two-roll mill roll diameter is 900mm, maximum thickness of the rolled strip is 10'mm; minimum of four-high rolling mill work roll diameter lOmm, rolling out the thickness of the porous thin strip of about 0. According to the principle of rolling around the powder weight equivalent, can be drawn from the relationship between the porous strip density and thickness of the powder bulk density and other factors. The former processes, including rolling and raw strip sintering, but in the preparation of dense material, they also need to add the necessary finishing and annealing.