CN113084315A - Welding method - Google Patents

Abstract

The invention discloses a welding method, which comprises the following steps: preheating a part to be welded to reach a critical melting point; and welding the parts to be welded by arc welding. Compared with the prior art, the welding method provided by the invention has the following technical effects: treat the welding and preheat, the rethread arc welding is treated the welding and is carried out the concentrated heating welding, guarantees to treat the form of welding in welding process, prevents to treat the unable heat altered shape that resumes of appearance of welding when the welding, influences the use of treating the welding, improves welding quality, preheats through treating the welding in advance simultaneously, shortens arc welding time, improves welding efficiency.

Description

Welding method

Technical Field

The invention relates to the technical field of welding processes, in particular to a welding method.

Background

The common welding of copper bar and copper plate is carried out by burning acetylene in oxygen to generate a large amount of heat to melt local base metal (copper bar and copper plate) and welding material (copper wire) to connect them. The oxygen-acetylene gas welding method is adopted to weld the copper bar and the copper plate, and has the problems of high operation difficulty, high heat influence, no guarantee of welding quality, low efficiency and the like.

Disclosure of Invention

In view of the above, the first objective of the present invention is to provide a welding method to solve the problems of difficult operation and low welding quality of the existing oxyacetylene method.

In order to achieve the first object, the invention provides the following technical scheme:

a method of welding, comprising:

preheating a part to be welded to reach a critical melting point;

and welding the parts to be welded by arc welding.

Preferably, the preheating of the workpiece to be welded comprises:

and preheating the part to be welded by using oxyacetylene flame.

Preferably, the welding the to-be-welded member by arc welding includes:

putting the to-be-welded piece into protective gas;

and welding the welding wire and the to-be-welded part by consumable electrode argon arc welding.

Preferably, before preheating the part to be welded, the method further comprises:

and cleaning the welding surface of the to-be-welded part.

Preferably, after the welding of the member to be welded by arc welding, the method further includes:

and removing the fumigation of the surface weld of the part to be welded by using a steel wire.

Preferably, the arc welding is one of argon arc welding, arc welding or submerged arc welding.

The welding method provided by the invention comprises the following steps: preheating a part to be welded to reach a critical melting point; and welding the parts to be welded by arc welding.

Compared with the prior art, the welding method provided by the invention has the following technical effects:

treat the welding and preheat, the rethread arc welding is treated the welding and is carried out the concentrated heating welding, guarantees to treat the form of welding in welding process, prevents to treat the unable heat altered shape that resumes of appearance of welding when the welding, influences the use of treating the welding, improves welding quality, preheats through treating the welding in advance simultaneously, shortens arc welding time, improves welding efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic flow chart of a welding method according to an embodiment of the present invention.

Detailed Description

The embodiment of the invention discloses a welding method, which aims to solve the problems of high operation difficulty and low welding quality of the existing oxyacetylene method.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic flow chart of a welding method according to an embodiment of the invention.

In a particular embodiment, the present invention provides a welding method comprising:

s11: preheating a part to be welded to reach a critical melting point;

s12: and welding the parts to be welded by arc welding.

The method comprises the steps of preheating a to-be-welded part by a heating furnace, melting the to-be-welded part by preheating to shorten the welding time of subsequent arc welding, carrying out concentrated heating on a welding seam of the to-be-welded part by arc welding, and melting a welding wire and base metal by taking an arc between the meltable welding wire and the to-be-welded part as a heat source by the arc welding. The parts to be welded can be made of alloy, copper or other metal parts and are arranged as required.

Compared with the prior art, the welding method provided by the invention has the following technical effects:

treat the welding and preheat, the rethread arc welding is treated the welding and is carried out the concentrated heating welding, guarantees to treat the form of welding in welding process, prevents to treat the unable heat altered shape that resumes of appearance of welding when the welding, influences the use of treating the welding, improves welding quality, preheats through treating the welding in advance simultaneously, shortens arc welding time, improves welding efficiency.

Wherein, treat a welding spare and preheat, include:

the device adopts oxyacetylene flame to preheat the part to be welded, generates a large amount of heat through combustion of acetylene in oxygen to melt local part to be welded and welding materials to realize welding, has low cost, convenient acquisition of equipment and simple structure, and can also realize the preheating of the part to be welded by other modes in other embodiments, thereby being within the protection scope of the invention.

In one embodiment, the arc welding is one of argon arc welding, arc welding or submerged arc welding. Further, welding the part to be welded by arc welding includes:

putting a to-be-welded part into protective gas;

and welding the welding wire and the to-be-welded part by consumable electrode argon arc welding.

Protective gas is conveyed to the welding area, and the protective gas can be high-purity argon, so that the high-temperature oxidation is effectively avoided; the electric arc, the molten welding wire, the molten pool and the base metal of the accessory are prevented from harmful gas of surrounding air, the continuously fed welding wire metal is continuously molten and transited to the molten pool, and is fused with the molten base metal to form weld metal, so that workpieces are connected, the welding quality is guaranteed, and meanwhile, the welding efficiency is improved.

Specifically, before preheating the part to be welded, the method further comprises the following steps:

cleaning the welding surface of the part to be welded, wherein oil stains on the welding surface of the part to be welded are cleaned by using acetone, alcohol or similar cleaning agents; and cleaning the welding surface of the part to be welded by using clean water, and drying.

After welding the part to be welded by arc welding, the method further comprises the following steps:

and removing the fumigation of the surface welding seam of the part to be welded by using the steel wire.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. A method of welding, comprising:

preheating a part to be welded to reach a critical melting point;

and welding the parts to be welded by arc welding.

2. The welding method of claim 1, wherein preheating the part to be welded comprises:

and preheating the part to be welded by using oxyacetylene flame.

3. The welding method according to claim 1, wherein the welding the member to be welded by arc welding comprises:

putting the to-be-welded piece into protective gas;

and welding the welding wire and the to-be-welded part by consumable electrode argon arc welding.

4. The welding method of claim 1, wherein prior to preheating the part to be welded, the method further comprises:

and cleaning the welding surface of the to-be-welded part.

5. The welding method according to claim 1, wherein after the welding of the member to be welded by arc welding, the method further comprises:

and removing the fumigation of the surface weld of the part to be welded by using a steel wire.

6. A welding method according to any one of claims 1-5, wherein said arc welding is one of argon arc welding, arc welding or submerged arc welding.

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