Screw conveyor made of alloyed steel and tempered by electromagnetic induction or exposure to a flame

Abstract

A helicoid conveyor screw manufactured from alloy steel and tempered by electromagnetic induction or flame used to convey abrasive granular products in the process of screw rotation under high friction and wear. Its inventive principle is related to the method for obtaining it by alloying steel with the chemical element Boron (B) and heat treating it, which results in greater hardness and durability of the flight.

Claims

1. A helicoid conveyor screw, comprising: a mounting shaft having ends that include actuation fittings, and a tempered helix with a non-tempered inner edge that is wrapped and welded to the mouthing shaft; wherein: the helix is comprised of an alloy steel tempered by electromagnetic induction or flame.

2. A helicoid conveyor screw as in claim 1, wherein: the alloy steel has a combination of Boron (B) and steel.

3. A method for obtaining a helicoid conveyor screw comprising: combining alloy steel and Boron to form a Boron steel alloy, cutting the combined Boron steel alloy into long strips cold rolling the strips into a flight, tempering outer surfaces of the flight by electromagnetic induction or flame to increase hardness of flight as a result of reactive process of the Boron steel alloy combination at a high temperature wherein: an inner edge of the flight is not tempered by electromagnetic induction or flame.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) This utility model will be better understood from the drawings representative of a helicoid screw manufactured from alloy steel and tempered by electromagnetic induction or flame such that the subject matter can be easily reproduced by proper technique, thus allowing full implementation of the functionality of the subject matter claimed herein.

(2) The specification is based on the drawings that show the best or preferred mode of implementing the designed product through detailed and consecutive numbering which clarifies the aspects that may be implied by the adopted depiction so as to determine clearly the scope of protection claimed herein.

(3) The drawings are merely illustrative and may vary since they do not deviate from the principle initially claimed herein.

(4) FIG. 1 is a front view of the proposed utility model.

(5) FIG. 2 is a view from above of the proposed utility model.

DETAILED DESCRIPTION

(6) A helicoid conveyor screw manufactured from alloy steel and tempered by electromagnetic induction or flame comprises a mounting shaft (1) having actuation fittings (2) arranged at its ends, wrapped by a tempered helix (4) welded onto its inner edge (3), thus shaping the flight.

(7) A helicoid conveyor screw manufactured from alloy steel and tempered by electromagnetic induction or flame wherein the technical difference obtained by the product is related to the mechanical properties of hardened Boron steel, making it extremely resistant to abrasive wear and especially useful in high resistance structural applications, thus prolonging the durability of the structures and saving abrasion and environment-related costs.