Provided are: a method for producing a high-speed tool steel material capable of increasing carbides in the structure of a high-speed tool steel product; a method for producing a high-speed tool steel product; and a high-speed tool steel product. The method for producing a high-speed tool steel material is provided with: a casting step for casting molten steel to obtain a steel ingot; a blooming step for heating the steel ingot obtained in said casting step to a temperature higher than 1120 C. and thereafter hot-working same to obtain an intermediate material; and a finishing step for heating the intermediate material obtained in the blooming step to a temperature of 900-1120 C. and thereafter hot-working same to obtain the high-speed tool steel material. Further, said method for producing a high-speed tool steel material is provided with an annealing step for annealing the high-speed tool steel material obtained in said finishing step. The present invention is also: a method for producing a high-speed tool steel product, wherein quenching and annealing is performed on the high-speed tool steel material obtained in the production method above; and a high-speed tool steel product.

Provided are: a method for producing a high-speed tool steel material capable of increasing carbides in the structure of a high-speed tool steel product; a method for producing a high-speed tool steel product; and a high-speed tool steel product. The method for producing a high-speed tool steel material is provided with: a casting step for casting molten steel to obtain a steel ingot; a blooming step for heating the steel ingot obtained in said casting step to a temperature higher than 1120 C. and thereafter hot-working same to obtain an intermediate material; and a finishing step for heating the intermediate material obtained in the blooming step to a temperature of 900-1120 C. and thereafter hot-working same to obtain the high-speed tool steel material. Further, said method for producing a high-speed tool steel material is provided with an annealing step for annealing the high-speed tool steel material obtained in said finishing step. The present invention is also: a method for producing a high-speed tool steel product, wherein quenching and annealing is performed on the high-speed tool steel material obtained in the production method above; and a high-speed tool steel product.

Provided are: a method for producing a high-speed tool steel material capable of increasing carbides in the structure of a high-speed tool steel product; a method for producing a high-speed tool steel product; and a high-speed tool steel product. The method for producing a high-speed tool steel material is provided with: a casting step for casting molten steel to obtain a steel ingot; a blooming step for heating the steel ingot obtained in said casting step to a temperature higher than 1120 C. and thereafter hot-working same to obtain an intermediate material; and a finishing step for heating the intermediate material obtained in the blooming step to a temperature of 900-1120 C. and thereafter hot-working same to obtain the high-speed tool steel material. Further, said method for producing a high-speed tool steel material is provided with an annealing step for annealing the high-speed tool steel material obtained in said finishing step. The present invention is also: a method for producing a high-speed tool steel product, wherein quenching and annealing is performed on the high-speed tool steel material obtained in the production method above; and a high-speed tool steel product.

The present invention discloses a method of manufacturing a tool with a cutting edge comprising a substrate for supporting and a cladding layer for forming the cutting edge, and a transition zone connecting the substrate and the cladding layer; the method of manufacturing it includes: providing a first material used for forming the substrate and having a first side; providing a second material which is clad onto the first side by way of laser cladding to form the cladding layer, and forming a transition zone between the cladding layer and the substrate where the first material and the second material are metallurgically bonded. The tool obtained by adopting the manufacturing process according to the present invention combines the following advantages: good toughness of the cutter body, high hardness of the cutting edge, not easy breaking off of the cutter body and the cutting edge, and long service life.

The present invention discloses a method of manufacturing a tool with a cutting edge comprising a substrate for supporting and a cladding layer for forming the cutting edge, and a transition zone connecting the substrate and the cladding layer; the method of manufacturing it includes: providing a first material used for forming the substrate and having a first side; providing a second material which is clad onto the first side by way of laser cladding to form the cladding layer, and forming a transition zone between the cladding layer and the substrate where the first material and the second material are metallurgically bonded. The tool obtained by adopting the manufacturing process according to the present invention combines the following advantages: good toughness of the cutter body, high hardness of the cutting edge, not easy breaking off of the cutter body and the cutting edge, and long service life.

An apparatus (100) for manufacturing a stress relieved length of steel having an oxidised surface layer is disclosed. The apparatus (100) comprises: a heating chamber (102); a reaction chamber (104) coupled to the heating chamber (102); and a conveying mechanism arranged to convey the length of steel along a path through the heating chamber (102) and reaction chamber (104). The heating chamber (102) comprises a heating apparatus arranged to heat the length of steel in a heating portion (110) of the path. The apparatus (100) further comprises a control means comprising a sealed unit defined by the heating chamber (102) and the reaction chamber (104). The control means is arranged to control both the temperature of the length of steel and the atmosphere to which the length of steel is exposed in an oxidisation portion (112) of the path within the reaction chamber (104) in which the oxidised surface layer is formed. A method (100) of manufacturing a stress relieved length of steel having an oxidised surface layer is also disclosed.

An apparatus (100) for manufacturing a stress relieved length of steel having an oxidised surface layer is disclosed. The apparatus (100) comprises: a heating chamber (102); a reaction chamber (104) coupled to the heating chamber (102); and a conveying mechanism arranged to convey the length of steel along a path through the heating chamber (102) and reaction chamber (104). The heating chamber (102) comprises a heating apparatus arranged to heat the length of steel in a heating portion (110) of the path. The apparatus (100) further comprises a control means comprising a sealed unit defined by the heating chamber (102) and the reaction chamber (104). The control means is arranged to control both the temperature of the length of steel and the atmosphere to which the length of steel is exposed in an oxidisation portion (112) of the path within the reaction chamber (104) in which the oxidised surface layer is formed. A method (100) of manufacturing a stress relieved length of steel having an oxidised surface layer is also disclosed.

A method (100) of producing toothed blades from a strip material (200, 250) is disclosed. The method (100) comprises: cutting the strip material using combined laser cutting (102a) and mechanical machining (104a) or using waterjet cutting (102b) to form a plurality of teeth in an edge of the strip material (200, 250), wherein the cutting is controlled to cut each of the teeth using a flexible programmable geometry. A toothed blade production line (300, 400) arranged to produce toothed blades from a strip material using the method is also disclosed.

A method (100) of producing toothed blades from a strip material is disclosed. The method (100) comprises: laser cutting (102) the strip material to form a plurality of teeth in an edge of the strip material; and mechanically machining (104) the strip material to remove at least part of a heat-affected portion of the edge resulting from the laser cutting. A toothed blade production line (400; 500) arranged to produce toothed blades from a strip material is also disclosed.

Embodiments herein describe a tie strap with a hardened integrated rivet for a saw chain. The tie strap has a body with an integrated rivet extending therefrom and having a shoulder extending from the body and configured to engage a rivet hole of a connector link and a hub extending from the shoulder and configured to engage a rivet hole of an opposing tie strap. The shoulder has a high wear region and a low wear region disposed opposite from the high wear region, wherein the low wear region has a first hardness that is less than a second hardness of the high wear region. Generally, the high wear region extends circumferentially around the shoulder and is between about 90 degrees counter clockwise to about 90 degrees clockwise measured from a center point on the shoulder facing inward toward a center part of the body.