The invention relates to a surface-hardened, rotationally symmetrical workpiece, to a hardening method and to a hardening apparatus. The proposed hardening apparatus comprises a machine frame on which two coaxially arranged rotary bearings designed to support a rotationally symmetrical workpiece are arranged, at least one rotary bearing being operatively connected to a drive device to generate rotation of the workpiece; and at lease one laser apparatus for generating focussed, high-energy radiation is arranged on said rotary bearing, said laser apparatus being movable in the axial direction, and the radiation being directed toward the workpiece.

Apparatus and method for construction of a rectangular deep cryogenic treatment chamber using an insulated, steel structure capable of large size and large volume cold thermal treatment. Apparatus includes end or top-mounted closure, liquid nitrogen delivery and distribution mechanisms, fan motors, cold diffusion-less thermal exchange, external heating element, electrical wiring and machined components. The design facilitates both low temperature, dry vapor thermal processing of metal and metal-matrix components down to −320° F. to enhance wear, corrosion, mechanical, thermal and electrical characteristics, and also post-cryogenic tempering capability to 300° F. The apparatus describes an external, LN2 storage dewar and solenoid-activated, gravity fed cryogen delivery via distribution hubs and distributed flow tubes. The apparatus also describes integrated deep cryogenic treatment authentication, test, validation and certification equipment. The process and method of treatment results in certification documents that authenticate and confirm treatment of the subject parts, reflect test and measurement of improved characteristics, retained data for archival purposes and to provide scientific evidence and proof of such treatment to a third-party not present at time of treatments, test or certification

Apparatus and method for construction of a rectangular deep cryogenic treatment chamber using an insulated, steel structure capable of large size and large volume cold thermal treatment. Apparatus includes end or top-mounted closure, liquid nitrogen delivery and distribution mechanisms, fan motors, cold diffusion-less thermal exchange, external heating element, electrical wiring and machined components. The design facilitates both low temperature, dry vapor thermal processing of metal and metal-matrix components down to −320° F. to enhance wear, corrosion, mechanical, thermal and electrical characteristics, and also post-cryogenic tempering capability to 300° F. The apparatus describes an external, LN2 storage dewar and solenoid-activated, gravity fed cryogen delivery via distribution hubs and distributed flow tubes. The apparatus also describes integrated deep cryogenic treatment authentication, test, validation and certification equipment. The process and method of treatment results in certification documents that authenticate and confirm treatment of the subject parts, reflect test and measurement of improved characteristics, retained data for archival purposes and to provide scientific evidence and proof of such treatment to a third-party not present at time of treatments, test or certification

A drill tool capable of coping with a rock drill having high output power and a method for producing the drill tool are described. The drill tool is produced by employing, as a drill tool material, an alloy steel composed of the following chemical components: 0.22 to 0.26 wt % of C, 0.15 to 0.35 wt % of Si, 0.55 to 0.80 wt % of Mn, 2.60 to 3.00 wt % of Ni, 1.00 to 1.50 wt % of Cr, 0.20 to 0.30 wt % of Mo, and Fe and inevitable impurities as the balance. Heat treatment with quenching is performed after carburizing performed by means of oil cooling with cold oil and a tempering temperature set at 400 to 440° C.

A drill tool capable of coping with a rock drill having high output power and a method for producing the drill tool are described. The drill tool is produced by employing, as a drill tool material, an alloy steel composed of the following chemical components: 0.22 to 0.26 wt % of C, 0.15 to 0.35 wt % of Si, 0.55 to 0.80 wt % of Mn, 2.60 to 3.00 wt % of Ni, 1.00 to 1.50 wt % of Cr, 0.20 to 0.30 wt % of Mo, and Fe and inevitable impurities as the balance. Heat treatment with quenching is performed after carburizing performed by means of oil cooling with cold oil and a tempering temperature set at 400 to 440° C.

The invention relates to a surface-hardened, rotationally symmetrical workpiece, to a hardening method and to a hardening apparatus. The proposed hardening apparatus comprises a machine frame on which two coaxially arranged rotary bearings designed to support a rotationally symmetrical workpiece are arranged, at least one rotary bearing being operatively connected to a drive device to generate rotation of the workpiece; and at lease one laser apparatus for generating focused, high-energy radiation is arranged on said rotary bearing, said laser apparatus being movable in the axial direction, and the radiation being directed toward the workpiece.

The invention relates to a surface-hardened, rotationally symmetrical workpiece, to a hardening method and to a hardening apparatus. The proposed hardening apparatus comprises a machine frame on which two coaxially arranged rotary bearings designed to support a rotationally symmetrical workpiece are arranged, at least one rotary bearing being operatively connected to a drive device to generate rotation of the workpiece; and at lease one laser apparatus for generating focused, high-energy radiation is arranged on said rotary bearing, said laser apparatus being movable in the axial direction, and the radiation being directed toward the workpiece.

A system for treating material of a cutting element may include a method, and the method may include providing a piece of material to form a blank for the cutting element, and applying a cladding material to at least a portion of the blank utilizing a laser to bond a cladding powder to the exterior surface of the blank. The application may include selecting and utilizing a power level of the laser and a rate of movement of the spot of the laser across the exterior surface which is effective to form a stratum of martensite in the substrate of the material below the exterior surface and the cladding material bonded to the exterior surface. The method may further include removing a portion of the cladded blank to form a cutting edge with a portion of the stratum of martensite exposed at the cutting edge.

A system for treating material of a cutting element may include a method, and the method may include providing a piece of material to form a blank for the cutting element, and applying a cladding material to at least a portion of the blank utilizing a laser to bond a cladding powder to the exterior surface of the blank. The application may include selecting and utilizing a power level of the laser and a rate of movement of the spot of the laser across the exterior surface which is effective to form a stratum of martensite in the substrate of the material below the exterior surface and the cladding material bonded to the exterior surface. The method may further include removing a portion of the cladded blank to form a cutting edge with a portion of the stratum of martensite exposed at the cutting edge.

The present disclosure relates to a drill component having a martensitic stainless steel which has good corrosion resistance in combination with optimized and well-balanced mechanical properties, such as high hardness, resistance against wear and abrasion, high tensile strength and high impact toughness.