The invention relates to a method for producing and a cutting tool, respectively, for cutting hard materials such a natural stone or concrete or the like. A ductile support body (2) is the base body of the cutting tool, and a plurality of cutting modules (1) are arranged on the cutting edge of the cutting tool. The cutting member(10) is mounted on an intermediate support member (11), preferably by a laser weld (15), to form said cutting module (1). The modules (1) are attached to the support body (2) by means of a weld (14) in accurate manner, preferably by assistance of abutting support surfaces (120, 121, 123; 20, 21, 23) that hinder movement in at least 2 orthogonal directions, before welding each module (1) onto the support body (2). The invention enables production of pre-fabricated cutting modules (1) at central production sites, e.g. having expensive laser welding equipment, and shipment of these small pre-made modules (1) to distant locations where simple standard welding techniques may be used to produce a cutting tool.

A saw blade includes an elongated blade body having a first end portion, a second end portion, and a cutting edge portion. An exposed first tool holder portion is coupled to the first end portion and is configured to removably mount the blade body in a blade holder of a powered saw. An unexposed second tool holder portion is defined by a first score in the blade body between the first end portion and the second end portion. The first score is configured so that the second tool holder portion can be exposed by breaking off a first removable portion of the blade body at the first score. The second tool holder portion is configured to removably mount the blade body in a blade holder of a powered saw when the second tool holder portion is exposed.

The invention proposes a tool and device, with the aid of which it is possible to remove the surface of walls, ceilings and floors also in the corners of contaminated interiors.

A saw blade is provided having a noise and stress-reduction structure, the saw blade having a structure in which a plurality of diamond segments are mounted at a first unit and the first unit has a second unit, thereby reducing the noise generated during a cutting operation, while increasing heating performance with a relatively simple configuration, and simultaneously dispersing impact stress so as to prevent the occurrence of cracks.

A reciprocating saw blade includes an axially elongated blade body having a first end portion, a second end portion, a cutting edge extending from the first end portion to the second end portion, and an opposite back edge extending from the first end portion to the second end portion. An exposed first tang is coupled to the first end portion and is configured to removably mount the blade body in a blade holder of a powered reciprocating saw. An unexposed second tang is defined by a first score in the blade body between the first end portion and the second end portion. The first score is configured so that the second tang can be exposed by breaking off a first removable portion of the blade body at the first score. The second tang is configured to removably mount the blade body in a blade holder of a powered reciprocating saw when the second tang is exposed.

A diamond substrate producing method includes a belt-shaped separation layer forming step of applying a laser beam to a diamond ingot as relatively moving the ingot and a focal point of the laser beam in a [110]-direction perpendicular to a (110)-plane, thereby forming a belt-shaped separation layer extending in the [110]-direction inside the ingot, an indexing step of relatively moving the ingot and the focal point in an indexing direction parallel to a (001)-plane and perpendicular to the [110]-direction, a planar separation layer forming step of repeating the belt-shaped separation layer forming step and the indexing step to thereby form a planar separation layer parallel to the (001)-plane inside the ingot, the planar separation layer being composed of a plurality of belt-shaped separation layers arranged side by side in the indexing direction, and a separating step of separating a substrate from the diamond ingot along the planar separation layer.

A staggered-teeth diamond saw blade includes a circular steel base and a side wall provided at an outer edge of the steel base. Multiple first diamond cutter heads and multiple second diamond cutter heads are alternately arranged at the side wall through laser brazing; multiple diamond teeth protection cutter heads are uniformly distributed on an external surface of the steel base through high frequency induction brazing; a pre-plating layer is preformed at a welding surface where the side wall is welded with the first diamond cutter heads and the second diamond cutter heads; a pre-plating layer is preformed at a welding surface where the external surface of the steel base is welded with the diamond teeth protection cutter heads. The diamond cutter heads of the present invention are staggered to thicken the thickness thereof while cutting concrete pavement and other materials at high speed.

A cutting tool includes a blade formed so as to extend in the width direction or length direction of a workpiece; at least one cutting tip formed so as to protrude from the lower portion of the blade so as to cut the workpiece by reciprocating by means of a swinging motion; and a brazing part formed between the blade and the at least one cutting tip so as to silver-braze the blade and the at least one cutting tip. The brazing part includes a first silver solder layer; a metal sheet layer formed on the first silver solder layer and having a melting point that is higher than a silver brazing process temperature; and a second silver solder layer formed on the metal sheet layer.

The present application provides a concrete cutting saw blade, which relates to the technical field of diamond tools. The concrete cutting saw blade comprises a base body and a cutter head, wherein the base body and the cutter head are connected by welding, the cutter head comprises a body part, a wear-resistant layer and a filler, the body part is made of the same material as the base body, the wear-resistant layer is provided on one side of the body part on the blade surface of the cutter head, the body part is provided with a narrow slit at the edge of the blade, and the filler is provided in the narrow slit. The technical scheme solves the technical problems in the prior art that the concrete cutting saw blade is complicated to manufacture, high in cost and unstable in quality.

An abrasive segment can include an inner segment portion, an outer segment portion, and a central segment portion connected thereto. The inner segment portion can include an inner circumferential wall and an outer circumferential wall. Leading and trailing radial sidewalls can extend between the inner circumferential wall and the outer circumferential wall opposite each other. The outer segment portion can include an inner circumferential wall and an outer circumferential wall. Leading and trailing radial sidewalls can extend between the inner circumferential wall and the outer circumferential wall opposite each other. The central segment portion can include a leading radial sidewall and a trailing radial sidewall. The leading radial sidewall of the central segment portion can establish an acute angle, , with respect to the outer circumferential wall of the inner segment portion and an obtuse angle, , with respect the inner circumferential wall of the outer segment portion.