阅读说明：本技术 一种数控化横纵钢管高安全性点焊工艺 (High-safety spot welding process for numerical control horizontal and vertical steel pipes ) 是由 戴方晖 陈璐星 林丽娟 于 2021-08-31 设计创作，主要内容包括：本发明属于钢管焊接技术领域,特别涉及一种数控化横纵钢管高安全性点焊工艺,所述的生产工艺包括如下步骤,夹管对位、涂层涂覆、激光点焊等。本发明通过万向机械臂、激光点焊机与数字控制系统控制连接,利用数控控制系统精准控制万向机械臂、激光点焊机的夹持时间、高精度对位、点焊时间、使得万向机械臂、激光点焊机均能够稳定快速的进行点焊,且由于万向机械臂稳定夹持钢管,避免了人工接触的可能性,提高了安全性,另外,由于镍粉涂层由镍粉、石墨、氮化硼混合制成,使得镍粉涂层具有高稳定性、高硬度,可以使得焊接点能够稳固焊接,且利用激光点焊机能够快速成型点焊,达到了精准定位焊接、高效焊接、高安全性、焊接点稳固的效果。(The invention belongs to the technical field of steel pipe welding, and particularly relates to a high-safety spot welding process for a numerical control transverse and longitudinal steel pipe. The universal mechanical arm and the laser spot welding machine are in control connection with the digital control system, the numerical control system is used for accurately controlling the clamping time, the high-precision alignment and the spot welding time of the universal mechanical arm and the laser spot welding machine, so that the universal mechanical arm and the laser spot welding machine can stably and quickly perform spot welding, and the universal mechanical arm stably clamps a steel pipe, so that the possibility of manual contact is avoided, and the safety is improved.)

1. The numerical control horizontal and vertical steel pipe high-safety spot welding process is characterized by comprising the following steps of: the production process comprises the following steps:

step 101: pipe clamping alignment: the two groups of universal mechanical arms are used for clamping the two steel pipes respectively, and the two groups of universal mechanical arms are used for aligning the pipe orifices of the two steel pipes to form welding points, so that the steel pipe welding points can be accurately aligned;

step 102: coating of a coating: preparing a nickel powder coating, namely preheating a welding point to 180-220 ℃, and then uniformly coating the nickel powder coating on the outer surface of the welding point;

step 103: laser spot welding: and spot welding is carried out by using a laser spot welding machine, the universal mechanical arm slowly rotates the steel pipe in the spot welding process, the laser spot welding machine directly aims at the highest point of a welding point to carry out laser spot welding because the steel pipe slowly rotates, and the rotating speed of the steel pipe is the same as that of a synchronous powder feeding method of the laser spot welding machine.

2. The numerical control horizontal and vertical steel pipe high-safety spot welding process according to claim 1, which is characterized in that: the nickel powder coating is prepared by mixing 75% of nickel powder, 15% of graphite and 10% of boron nitride.

3. The numerical control horizontal and vertical steel pipe high-safety spot welding process according to claim 1, which is characterized in that: and S101, before the pipe clamping is aligned, impurities need to be cleaned from the pipe orifice of the steel pipe.

4. The numerical control horizontal and vertical steel pipe high-safety spot welding process according to claim 1, which is characterized in that: the universal mechanical arms are at least provided with two groups.

5. The numerical control horizontal and vertical steel pipe high-safety spot welding process according to claim 1, which is characterized in that: the universal mechanical arm and the laser spot welding machine are in control connection with the digital control system.

6. The numerical control horizontal and vertical steel pipe high-safety spot welding process according to claim 1, which is characterized in that: the laser power of the laser spot welding machine is 2200-.

7. The numerical control horizontal and vertical steel pipe high-safety spot welding process according to claim 1, which is characterized in that: the thickness of the nickel powder coating is 0.8-1.5 mm.

8. The numerical control horizontal and vertical steel pipe high-safety spot welding process according to claim 1, which is characterized in that: and in the step S102, the nickel powder coating is uniformly coated on the outer surface of the welding point, and a synchronous powder feeding method is adopted for uniform coating.

Technical Field

The invention belongs to the technical field of steel pipe welding, and particularly relates to a numerical control high-safety spot welding process for transverse and longitudinal steel pipes.

Background

The welding of present steel pipe to the steel mouth of pipe all adopts manual welding, manual welding's defect lies in the easy splash of the flare that sprays in the welding process, has the threat to workman's safety, and simultaneously, steel pipe mouth of pipe department can not accurate location butt joint, in addition, ordinary spot welding, it is usually direct to weld the steel pipe butt joint, make the welding point not pleasing to the eye enough, and can not stably dock between the steel pipe, and welding speed is slower, consequently need urgently to research and develop an accurate tack welding, high-efficient welded numerical control violently indulges steel pipe high security spot welding process.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects that in the prior art, manual welding is easy to splash due to fire light sprayed in the welding process and threatens the safety of workers, meanwhile, the pipe orifice of a steel pipe cannot be accurately positioned and butted, in addition, common spot welding is generally used for directly welding and butting the steel pipe, so that the welding point is not attractive enough, the steel pipes cannot be stably butted, and the welding speed is slow, the invention provides the numerical control high-safety spot welding process for the transverse and longitudinal steel pipes, which is accurate in positioning welding and efficient in welding.

(II) technical scheme

The invention is realized by the following technical scheme: the invention provides a high-safety spot welding process for a numerical control horizontal and vertical steel pipe, which comprises the following steps of:

step 101: pipe clamping alignment: the two groups of universal mechanical arms are used for clamping the two steel pipes respectively, and the two groups of universal mechanical arms are used for aligning the pipe orifices of the two steel pipes to form welding points, so that the steel pipe welding points can be accurately aligned;

step 102: coating of a coating: preparing a nickel powder coating, namely preheating a welding point to 180-220 ℃, and then uniformly coating the nickel powder coating on the outer surface of the welding point;

step 103: laser spot welding: and spot welding is carried out by using a laser spot welding machine, the universal mechanical arm slowly rotates the steel pipe in the spot welding process, the laser spot welding machine directly aims at the highest point of a welding point to carry out laser spot welding because the steel pipe slowly rotates, and the rotating speed of the steel pipe is the same as that of a synchronous powder feeding method of the laser spot welding machine.

Further, the nickel powder coating is prepared by mixing 75% of nickel powder, 15% of graphite and 10% of boron nitride.

Further, in the step S101, before the pipe clamping alignment, impurities need to be cleaned from the pipe orifice of the steel pipe.

Furthermore, the universal mechanical arms are at least provided with two groups.

Furthermore, the universal mechanical arm and the laser spot welding machine are in control connection with a digital control system.

Furthermore, the laser power of the laser spot welding machine is 2200-2500w, the scanning speed is 0.5-1 mm/s, and the spot diameter is 10 mm.

Further, the thickness of the nickel powder coating is 0.8-1.5 mm.

Further, in the step S102, the nickel powder coating is uniformly coated on the outer surface of the welding point, and a synchronous powder feeding method is adopted for uniform coating.

(III) advantageous effects

Compared with the prior art, the invention has the following beneficial effects:

the universal mechanical arm and the laser spot welding machine are in control connection with the digital control system, the numerical control system is used for accurately controlling the clamping time, the high-precision alignment and the spot welding time of the universal mechanical arm and the laser spot welding machine, so that the universal mechanical arm and the laser spot welding machine can stably and quickly perform spot welding, and the universal mechanical arm stably clamps a steel pipe, so that the possibility of manual contact is avoided, and the safety is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic view of the connection structure of the universal mechanical arm, the laser spot welding machine and the digital control system.

FIG. 2 is a schematic view of the structure of the welding point of two steel pipes according to the present invention.

Detailed Description

In the technical scheme:

in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides a high-safety spot welding process for a numerical control horizontal and vertical steel pipe, which comprises the following steps of:

step 101: pipe clamping alignment: the two groups of universal mechanical arms are used for clamping the two steel pipes respectively, and the two groups of universal mechanical arms are used for aligning the pipe orifices of the two steel pipes to form welding points, so that the steel pipe welding points can be accurately aligned;

step 102: coating of a coating: preparing a nickel powder coating, namely preheating a welding point to 180-220 ℃, and then uniformly coating the nickel powder coating on the outer surface of the welding point;

step 103: laser spot welding: the method comprises the following steps of performing spot welding by using a laser spot welding machine, wherein in the spot welding process, a universal mechanical arm slowly rotates a steel pipe, and the laser spot welding machine directly aims at the highest point of a welding point to perform laser spot welding due to the slow rotation of the steel pipe, wherein the rotation speed of the steel pipe is the same as that of a synchronous powder feeding method of the laser spot welding machine;

the nickel powder coating is prepared by mixing 75% of nickel powder, 15% of graphite and 10% of boron nitride;

in the step S101, before the pipe clamping alignment, impurities need to be cleaned from the pipe orifice of the steel pipe;

at least two groups of universal mechanical arms are arranged;

the universal mechanical arm and the laser spot welding machine are in control connection with the digital control system;

the laser power of the laser spot welding machine is 2200-;

the thickness of the nickel powder coating is 0.8-1.5 mm;

and in the step S102, the nickel powder coating is uniformly coated on the outer surface of the welding point, and a synchronous powder feeding method is adopted for uniform coating.

The universal mechanical arm and the laser spot welding machine are in control connection with the digital control system, the numerical control system is used for accurately controlling the clamping time, the high-precision alignment and the spot welding time of the universal mechanical arm and the laser spot welding machine, so that the universal mechanical arm and the laser spot welding machine can stably and quickly perform spot welding, and the universal mechanical arm stably clamps a steel pipe, so that the possibility of manual contact is avoided, and the safety is improved.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. .