Nitrogen Sintering of High Speed Steel Processed by Starch Consolidation

Structure and mechanical properties of HSS HS6-5-2- and HS12-1-5-5-type steel produced by modified powder injection moulding process

“…The optimum sintering temperature range for many highspeed steels is as small as 3-5 • C [10,11]. Increase of the carbon concentration caused by the incomplete binder degradation extends this temperature range, and especially decreases the sintering temperature, which additionally lowers manufacturing costs for this method.…”

“…Its employment for manufacturing tools from the commonly known material like the highindustrial conditions, as in many high speed steels this range is as small as 3-5 • C [10,11]. Growth of the carbon concentration caused by the incomplete degradation of the binding agent increases the "sintering window", and in particular lowers the sintering temperature which adds to lowering the manufacturing costs, bringing the best effects in mass production [5,6,9].…”

Comparison of structure and properties of the HS12-1-5-5 type high-speed steel fabricated using the pressureless forming and PIM methods

“…Comparing the mechanical properties and the structure of prepregs manufactured by powder injection moulding with materials made with the pressureless forming powder metallurgy, for which the thermosetting resin [13][14][15] or starch [8] are the binding materials most often, one can assume that powder injection is the most advantageous option, especially when the homogeneous structure and material density are taken into account. The reason for that is undoubtedly the injection pressure of the injection moulding machines employed.…”

“…According to the trend observed in the last years, i.e., forming the elements with their final shape, or with the near-net-shape, the development of such methods like powder injection moulding and pressureless forming, seems to be justified. Both these methods are widely used for manufacturing small elements with complicated shapes and complex surface [3][4][5][6][7][8][9][10][11][12][13][14][15]. Therefore, research was initiated on using them for manufacturing tool materials.…”

Fabrication methods and heat treatment conditions effect on tribological properties of high speed steels

“…The dynamical development pace of technology and engineering, as well as the continuous search for new technological solutions pertain both to the manufactured goods as well as tools employed in their manufacturing and forming processes [1,2]. Competitiveness growth among manufacturers of tool materials and high requirements of buyers, stimulated by the improving functional parameters of machines and equipment are undoubtedly the reason why many scientific and research centres carry out investigations focused on improvement of the working properties and reducing manufacturing costs of tool materials.…”