TWI677397B - Method for manufacturing cored welding wire comprising fe-based tungsten carbide - Google Patents

Abstract

The invention discloses a method for manufacturing an iron-based tungsten carbide flux-cored welding wire, which includes the following steps: (1) preparation of a flux core: using a surface coating process to coat a metal layer on the surface of carbide particles and preparing a flux core; (2) utilizing Steel tape covers the core; (3) forming process; and (4) drawing process. The technology of the present invention mainly uses a metal glue to coat tungsten carbide particles, so that the surface hardness of the tungsten carbide particles becomes soft, and at the same time, the sharp angle of the tungsten carbide particles becomes large. In this way, the welding process of the iron-based tungsten carbide flux-cored wire can avoid the direct impact of the arc energy on the tungsten carbide particles, and can maintain the resistance of the iron-based tungsten carbide hard surface layer by maintaining the original appearance of the tungsten carbide particles. Wear performance. Therefore, in the welding process of the iron-based tungsten carbide flux-cored wire, a higher welding heat can be used, thereby achieving the joint effect of high efficiency welding workability and low risk of false welding.

Description

Manufacturing method of iron-based tungsten carbide flux-cored welding wire

The invention relates to the related technical field of flux-cored welding wires, in particular to a method for manufacturing an iron-based tungsten carbide flux-cored welding wire.

The conventional technology mainly uses a steel strip to coat carbide particles to prepare an iron-based tungsten carbide core, and then processes the iron-based tungsten carbide core into a so-called iron-based tungsten carbide cored wire through a forming process and a drawing process. The wire diameter of the iron-based tungsten carbide flux-cored wire can be controlled by a wire drawing process.

It is worth noting that due to the high hardness of tungsten carbide particles, during the forming and drawing process, the sharp corners of the tungsten carbide particles are easy to locally crush or puncture the coated steel strip, which results in welding wire fracture and welding wire. The decrease in production efficiency and at the same time the quality of the deteriorated welding wire.

On the other hand, when applying iron-based tungsten carbide flux-cored wire made by conventional technology to arc welding, special attention must be paid to the heat (energy) of the arc should not be too high, so as not to cause tungsten carbide particles inside the iron-based tungsten carbide flux-cored wire Remelting, resulting in a reduction in the wear resistance of the hard surface layer formed. However, if the arc welding of iron-based tungsten carbide flux-cored wires is performed with a medium or low arc heat (energy), the production efficiency of the welding process will be lowered, which will be accompanied by an increase in the hard surface layer false welding defects.

From the above description, it can be known that it is necessary to develop a new manufacturing method of iron-based tungsten carbide flux-cored wire to solve the above problems. In view of this, the inventor of this case has made great efforts to research and invent, and finally developed and completed a manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention.

The main object of the present invention is to provide a method for manufacturing an iron-based tungsten carbide flux-cored welding wire. The technology of the present invention mainly uses a metal glue to coat tungsten carbide particles, so that the surface hardness of the tungsten carbide particles becomes soft, and at the same time, the sharp angle of the tungsten carbide particles becomes large. In this way, the welding process of the iron-based tungsten carbide flux-cored wire can avoid the direct impact of the arc energy on the tungsten carbide particles, and can maintain the resistance of the iron-based tungsten carbide hard surface layer by maintaining the original appearance of the tungsten carbide particles. Wear performance. Therefore, in the welding process of the iron-based tungsten carbide flux-cored wire, a higher welding heat can be used, thereby achieving the joint effect of high efficiency welding workability and low risk of false welding.

In order to achieve the above-mentioned main purpose of the present invention, the inventor of the present case first provided an embodiment of the method for manufacturing the iron-based tungsten carbide flux-cored wire, which includes the following process steps: (1) Flux core preparation, which uses a surface package The coating process covers a metal layer on the surface of carbide particles to prepare a drug core; (2) covers the drug core with a steel strip; (3) a forming process to obtain an iron-based tungsten carbide core; (4) a drawing process Drawing the iron-based tungsten carbide flux cored into a plurality of iron-based tungsten carbide flux-cored welding wires; and (5) controlling a wire diameter of the iron-based tungsten carbide flux-cored welding wire in a drawing process.

In the embodiment of the method for manufacturing the iron-based tungsten carbide flux-cored wire of the present invention, the process material of the metal layer may be any of the following: nickel, chromium, cobalt, iron, titanium, copper, silver, gold Or an alloy of any two or more of the foregoing.

In an embodiment of the method for manufacturing an iron-based tungsten carbide flux-cored wire according to the present invention, the surface coating process includes the following steps: (11) placing a plurality of tungsten carbide particles together with a metal colloid into a stirring container; (12) stirring and mixing the tungsten carbide particles with the metal colloid; (13) placing the product of the foregoing step (12) in a drying device for baking and drying; and (14) placing the product of the foregoing step (13) The product is crushed and screened to obtain a drug core.

In an embodiment of the method for manufacturing an iron-based tungsten carbide flux-cored wire according to the present invention, the surface coating process includes the following steps: (11a) cleaning a plurality of tungsten carbide particles; (12a) removing the tungsten carbide particles Placed in a reaction chamber; (13a) plating a target metal material onto the surfaces of the tungsten carbide particles by a process method such as thermal evaporation, ion sputtering, or pulsed laser deposition; and (14a) obtaining a drug core .

In an embodiment of the method for manufacturing an iron-based tungsten carbide flux-cored wire according to the present invention, the surface coating process includes the following steps: (11b) cleaning a plurality of tungsten carbide particles, and then performing the tungsten carbide particles Particle size screening; (12b) placing the tungsten carbide particles after screening into a metal solution, and applying a current or no current to reducing and plating a target metal material contained in the metal solution onto the tungsten carbide particles; The surface; and (13b) cleaning the tungsten carbide particles, and then drying the tungsten carbide particles to obtain a drug core.

In the embodiment of the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention, the surface coating process includes the following steps: (11c) cleaning a plurality of tungsten carbide particles, and then performing the tungsten carbide particles Particle size screening; (12c) placing the screened tungsten carbide particles together with a precursor of a target metal material into a reaction chamber, and applying the chemical vapor deposition (CVD) technology to the target metal A material is deposited on the surfaces of the tungsten carbide particles; and (13c) the tungsten carbide particles are cleaned, and then the tungsten carbide particles are dried to obtain a drug core.

In order to more clearly describe the manufacturing method of an iron-based tungsten carbide flux-cored wire provided by the present invention, the preferred embodiments of the present invention will be described in detail below with reference to the drawings.

First embodiment

The first embodiment of the manufacturing method of an iron-based tungsten carbide flux-cored wire according to the present invention mainly includes the following process steps: (1) Flux core preparation, which uses a surface coating process to cover a surface of a carbide particle with a metal layer to prepare A drug core is obtained; wherein the process material of the metal layer can be any one of the following: nickel, chromium, cobalt, iron, titanium, copper, silver, gold, an alloy of any of the foregoing, or any of the above two Alloy; (2) coating the core with steel strip; (3) forming process to obtain iron-based tungsten carbide core; (4) drawing process, drawing the iron-based tungsten carbide core into a plurality of iron-based Tungsten carbide flux-cored wire; and (5) controlling the wire diameter of the iron-based tungsten carbide flux-cored wire in a drawing process.

FIG. 1 is a first flowchart showing a surface coating process of a manufacturing method of an iron-based tungsten carbide flux-cored wire according to the present invention. Different from the conventional process technology of the flux-cored welding wire, in the first embodiment of the present invention, the surface coating process is completed through the following steps: Step (S11): a plurality of tungsten carbide particles and a metal colloid Put together into a stirring container; Step (S12): Stir and mix the tungsten carbide particles with the metal colloid; Step (S13): Put the product of the aforementioned step (12) into a drying device for baking and drying; and Step (S14): The product of the aforementioned step (13) is crushed and screened to obtain a drug core.

Second embodiment

The second embodiment of the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention mainly includes the following process steps: (1) Flux core preparation, which is prepared by coating a metal layer on the surface of carbide particles by a surface coating process. Flux core; wherein the process material of the metal layer can be any of the following: nickel, chromium, cobalt, iron, titanium, copper, silver, gold, an alloy of any two of the above, or an alloy of any two or more of the above (2) coating the core with steel strip; (3) forming process to obtain iron-based tungsten carbide core; (4) drawing process, drawing the iron-based tungsten carbide core into a plurality of iron-based carbonizations Tungsten flux-cored wire; and (5) controlling a wire diameter of the iron-based tungsten carbide flux-cored wire in a drawing process.

FIG. 2 is a second flowchart showing the surface coating process of the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention. Different from the first embodiment, the second embodiment completes the surface coating process through the following steps: Step (S11a): cleaning a plurality of tungsten carbide particles; Step (S12a): placing the tungsten carbide particles in a Step (S13a): plating a target metal material on the surfaces of the tungsten carbide particles by a process such as thermal evaporation, ion sputtering, or pulsed laser deposition; and step (S14a): obtaining a medicine core.

Third embodiment

The third embodiment of the manufacturing method of the iron-based tungsten carbide flux-cored welding wire of the present invention mainly includes the following process steps: (1) Flux core preparation, which is prepared by coating a metal layer on the surface of carbide particles using a surface coating process. Flux core; wherein the process material of the metal layer can be any of the following: nickel, chromium, cobalt, iron, titanium, copper, silver, gold, an alloy of any two of the above, or an alloy of any two or more of the above (2) coating the core with steel strip; (3) forming process to obtain iron-based tungsten carbide core; (4) drawing process, drawing the iron-based tungsten carbide core into a plurality of iron-based carbonizations Tungsten flux-cored wire; and (5) controlling a wire diameter of the iron-based tungsten carbide flux-cored wire in a drawing process.

FIG. 3 is a third flowchart showing the surface coating process of the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention. Different from the second embodiment, the third embodiment completes the surface coating process through the following steps: Step (S11b): cleaning a plurality of tungsten carbide particles, and then performing particle size screening on the tungsten carbide particles; step (S12b): placing the tungsten carbide particles after screening into a metal solution, and reducing or plating a target metal material contained in the metal solution on the surfaces of the tungsten carbide particles with or without current; and Step (S13b): washing the tungsten carbide particles, and then drying the tungsten carbide particles to obtain a drug core.

Fourth embodiment

The fourth embodiment of the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention mainly includes the following process steps: (1) Flux core preparation, which is prepared by coating a metal layer on the surface of carbide particles by a surface coating process. Flux core; wherein the process material of the metal layer can be any of the following: nickel, chromium, cobalt, iron, titanium, copper, silver, gold, an alloy of any two of the above, or an alloy of any two or more of the above (2) coating the core with steel strip; (3) forming process to obtain iron-based tungsten carbide core; (4) drawing process, drawing the iron-based tungsten carbide core into a plurality of iron-based carbonizations Tungsten flux-cored wire; and (5) controlling a wire diameter of the iron-based tungsten carbide flux-cored wire in a drawing process.

FIG. 4 is a fourth flowchart showing the surface coating process of the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention. Different from the third embodiment, the fourth embodiment completes the surface coating process through the following steps: Step (S11c): cleaning a plurality of tungsten carbide particles, and then performing particle size screening on the tungsten carbide particles; step (S12c): placing the screened tungsten carbide particles together with a precursor of a target metal material into a reaction chamber, and depositing the target metal material by chemical vapor deposition (CVD) technology On the surface of the tungsten carbide particles; and step (S13c): washing the tungsten carbide particles, and then drying the tungsten carbide particles to obtain a drug core.

FIG. 5 is a schematic view showing a structure of an iron-based tungsten carbide flux-cored wire obtained by using the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention. As shown in FIG. 5, the metal carbide particles 2 precipitated on the iron-based metal base phase 1 are covered with a metal coating layer 3 on the outer surface.

In this way, the above-mentioned system has completely and clearly explained the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention; and from the above, it can be seen that the present system has the following advantages:

(1) The technology of the present invention mainly uses a metal glue to coat tungsten carbide particles, so that the surface hardness of the tungsten carbide particles becomes soft, and at the same time, the sharp angle of the tungsten carbide particles becomes large. In this way, the welding process of the iron-based tungsten carbide flux-cored wire can avoid the direct impact of the arc energy on the tungsten carbide particles, and can maintain the resistance of the iron-based tungsten carbide hard surface layer by maintaining the original appearance of the tungsten carbide particles. Wear performance. Therefore, in the welding process of the iron-based tungsten carbide flux-cored wire, a higher welding heat can be used, thereby achieving the joint effect of high efficiency welding workability and low risk of false welding.

It must be emphasized that the above detailed description is a specific description of a feasible embodiment of the present invention, but this embodiment is not intended to limit the patent scope of the present invention, and any equivalent implementation or change without departing from the technical spirit of the present invention, All should be included in the patent scope of this case.

<Invention>

S11 ~ S14‧‧‧step

S11a ~ S14a‧‧‧Steps

S11b ~ S13b‧‧‧Steps

S11c ~ S13c‧‧‧step

1‧‧‧ iron-based metal base phase

2‧‧‧Carbonized metal particles

3‧‧‧ metal cladding

＜ Learning ＞

no

FIG. 1 is a first flowchart showing a surface coating process of a manufacturing method of an iron-based tungsten carbide flux-cored wire according to the present invention; FIG. 2 is a surface coating process showing a manufacturing method of an iron-based tungsten carbide flux-cored wire according to the present invention; FIG. 3 is a third flowchart showing the surface coating process of the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention; FIG. 4 is a diagram showing the manufacturing of the iron-based tungsten carbide flux-cored wire of the present invention; The fourth flowchart of the surface coating process of the method; and FIG. 5 is a schematic diagram showing the structure of the iron-based tungsten carbide flux-cored wire obtained by using the manufacturing method of the iron-based tungsten carbide flux-cored wire of the present invention.

Claims (5)

A method for manufacturing an iron-based tungsten carbide flux-cored wire includes the following process steps: (1) using a surface coating process to cover a surface of a plurality of tungsten carbide particles with a metal layer to prepare a flux core; wherein, the surface coating The coating process includes the following steps: (11) placing a plurality of tungsten carbide particles together with a metal colloid in a stirring container; (12) stirring and mixing the tungsten carbide particles with the metal colloid; (13) mixing the foregoing steps (12) the product is placed in a drying device for baking and drying; (14) the product of the previous step (13) is crushed and screened to obtain the drug core; (2) the drug is covered with a steel belt Core; (3) obtaining an iron-based tungsten carbide flux core using a forming process; (4) drawing the iron-based tungsten carbide flux core into a plurality of iron-based tungsten carbide flux-cored wires; and (5) controlling during the drawing process The wire diameter of the iron-based tungsten carbide flux-cored wire. The method for manufacturing an iron-based tungsten carbide flux-cored wire as described in item 1 of the scope of the patent application, wherein the process material of the metal layer can be any of the following: nickel, chromium, cobalt, iron, titanium, copper, silver, Gold, an alloy of any of the foregoing, or an alloy of any two or more of the foregoing. The method for manufacturing an iron-based tungsten carbide flux-cored wire according to item 1 of the scope of the patent application, wherein the surface coating process includes the following steps: (11a) cleaning the plurality of tungsten carbide particles; (12a) applying the tungsten carbide particles; Tungsten carbide particles are placed in a reaction chamber; (13a) a target metal material is plated on the surfaces of the tungsten carbide particles by a thermal evaporation, ion sputtering, or pulse laser deposition process; and (14a) obtained The drug core. According to the method for manufacturing an iron-based tungsten carbide flux-cored wire according to item 1 of the scope of the patent application, the surface coating process includes the following steps: (11b) cleaning the plurality of tungsten carbide particles, and then carbonizing the plurality of tungsten carbide particles. Tungsten particles are screened for particle size; (12b) The screened tungsten carbide particles are placed in a metal solution, and a target metal material contained in the metal solution is reduced and plated on the carbonized materials with or without an electric current. The surface of the tungsten particles; and (13b) cleaning the tungsten carbide particles and then drying the tungsten carbide particles to obtain the drug core. According to the method for manufacturing an iron-based tungsten carbide flux-cored wire according to item 1 of the scope of the patent application, the surface coating process includes the following steps: (11c) cleaning the plurality of tungsten carbide particles, and then carbonizing the plurality of tungsten carbide particles. Tungsten particles are screened for particle size; (12c) The screened tungsten carbide particles are placed in a reaction chamber together with a precursor of a target metal material, and the target metal material is deposited and covered by chemical vapor deposition technology. The surfaces of the tungsten carbide particles; and (13c) cleaning the tungsten carbide particles, and then drying the tungsten carbide particles to obtain the drug core.