Sandvik Ab

Other

Sandvik Aktiebolag

Santrade, Ltd

Leif E Karlsson

Tommy S Tukala

Kurt O Karlsson

Lennart Karlsson

Klas Tübinger

Marie-Louise Bergholt

Marie-Louie Bergholt

Kent Eriksson

A drill for working in metallic materials includes a tool body having located in its front end at least one cutting insert, wherein the tool body is provided with one or several damping elements mounted such that during machining, a relative movement (i.e., sliding and/or deformation) of the tool body and the damping element is allowed to occur.

Vibration-dampened tool for working in metallic material

A drilling tool includes a drill body having chip channel formed therein and carrying cutting inserts at front ends of respective chip channels. Disposed in the chip channels at a location spaced from the cutting insert are respective damping elements. Each damping element comprises first and second portions formed of respective materials of different rigidity.

Vibration dampened drilling tool

Method and device for facilitating access to a multitude of alphanumeric

Spiral drill with coolant channels and method to manufacture a spiral

Spiral drill comprising a cylindrical part with two chip grooves (15,16) and a principal maximum stiffness direction (22,23), an attachment part (30) with larger diameter connecting to the cylindrical part at a transition (14), and a tip with indexable cutting inserts (12,13), the chip grooves spirally encircling the cylindrical part to make the principal direction turn an angle C which is at least 110 degrees and at most 125 degrees.

Spiral drill

A drill for stack drilling comprises a drill body, a central cutting insert, and a peripheral cutting insert. The inserts have active cutting edges arranged such that the drill successively cuts radially outwardly from the center of the drill in order to avoid the formation of break-out slugs. The active cutting edge of the central insert has three cutting edge portions forming obtuse angles with one another. The radially innermost one of those cutting edge portions is shorter than each of the other two cutting edge portions.

Drill

Each of a pair of heat exchangers in a combustion plant includes a storage space holding basic granules, and will alternatingly be flown through by combustion gas and air, respectively. Residual heat from the combustion gas will be absorbed by the granules, and the moisture contend of the gases will condense upon the granules. Sulphur dioxide in the combustion gas will react with the basic material to calcium sulphite, and the moist granules will catch ash particles and other cntaminants in the gas. When valves have been re-set, air is made to pass through the granules, whereby it will be preheated. The heated air may be conducted to a burner, to a regeneration apparatus for the granules, or through a conduit to the gas exhaust duct. After some time of operation the granules are transferred to the regeneration apparatus, which includes a rotatable drum, where the granules will be subjected to mechanical working and separation of calcium sulphate and dust particles, preferably while being heated.

Device for the purification of gas, especially combustion gas

The invention relates to a short-hole drill and a cutting insert therefor, for drilling of metallic work pieces. The drill comprises a drill shank with two chip flutes formed therein and with two cutting insert sites and two mainly rectangular cutting inserts having mutually identical shaping. The cutting inserts are accommodated in the cutting insert sites and secured thereto by means of lock screws such that the broken non-active cutting edge abuts against a broken support surface in each cutting insert site while the active cutting edge projects axially forwards. The cutting insert which is arranged radially outermost is inclined such that it determines the size of the bore while the longitudinal axis of the other cutting insert is arranged parallel to the center line (CL) of the drill. The distance between the outermost parts of each cutting edge is longer than the shortest distance between the long side surfaces of the cutting insert.

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Karlholmsbruk, Sweden

Leif E Karlsson